Damping shock absorber and washing machine
By adding two damping friction rings to the damping and shock absorber of the washing machine, the problem of insufficient lateral stiffness of the shock absorber steel pipe is solved, abnormal vibration noise is reduced, and the vibration and noise performance of the washing machine is improved.
Patent Information
- Application Number
- CN202310885000.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-18
- Publication Date
- 2025-01-21
AI Technical Summary
The damping vibration damper of existing washing machines is not lateral stiffer at one end of the damping friction ring away from the damping friction ring, which easily hits the vibration damper support tube, resulting in abnormal vibration noise and affects the vibration noise performance of the washing machine.
Two damping friction ring structures are adopted. The first damping friction ring and the second damping friction ring are respectively located at both ends of the second shock absorber support tube to enhance the lateral support of the shock absorber steel tube and reduce abnormal vibration noise.
By increasing the number of damping friction rings, the lateral stiffness of the shock absorber steel pipe is improved, abnormal vibration noise is reduced, and the vibration and noise performance of the entire washing machine is improved.
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Figure CN119332467A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of vibration reduction of washing machines, and in particular relates to a damping vibration isolator and a washing machine. Background Art
[0002] The damping vibration absorber is an important component of the washing machine. The damping vibration absorber mainly uses the damping friction to consume the vibration energy generated by the core components of the washing machine, reduce the transmission of vibration energy to the washing machine body and the ground, and ensure the vibration and noise performance of the entire washing machine.
[0003] The damping vibration absorber of the existing washing machine mainly includes a vibration absorber steel pipe, a vibration absorber support pipe and a friction ring structure. One end of the vibration absorber steel pipe is connected to the bottom of the washing machine body, one end of the vibration absorber support pipe is sleeved with the other end of the vibration absorber steel pipe and installed with a gap with the vibration absorber steel pipe, and the other end of the vibration absorber support pipe is connected to the outer barrel of the washing machine; most of the damping vibration absorbers are single damping friction ring structures, that is, there is only one set of damping friction rings that rub against the vibration absorber steel pipe to generate damping friction force, and the damping friction rings are arranged inside one end of the vibration absorber support pipe.
[0004] This structure has a more obvious technical disadvantage: the end of the shock absorber steel pipe away from the damping friction ring has insufficient lateral stiffness, which causes the shock absorber steel pipe to easily hit the shock absorber support tube. The damping shock absorber will produce abnormal vibration noise during operation, causing the vibration and noise performance of the entire washing machine to deteriorate. Summary of the invention
[0005] In order to solve the above-mentioned problems in the prior art, that is, to increase the lateral stiffness of the end of the shock absorber steel tube away from the damping friction ring, to improve or avoid the defect that the shock absorber steel tube is easy to hit the shock absorber support tube, to reduce or avoid the abnormal vibration noise that may be generated by the damping shock absorber during operation, and to improve the vibration and noise performance of the washing machine, the present application provides a damping shock absorber and a washing machine.
[0006] In a first aspect, an embodiment of the present application provides a damping vibration absorber, comprising: a first vibration absorber support tube, one end of which is connected to the outer barrel of a washing machine; a second vibration absorber support tube, both ends of which are open, one end of which is inserted into the first vibration absorber support tube and fixedly connected to the first vibration absorber support tube; a vibration absorber steel tube, one end of which is inserted into the first vibration absorber support tube and the second vibration absorber support tube and has a clearance fit with the first vibration absorber support tube and the second vibration absorber support tube, and the other end of the vibration absorber steel tube is connected to the bottom of the washing machine body; a first damping friction ring , arranged inside the second shock absorber support tube, the first damping friction ring is located at the end of the second shock absorber support tube facing the first shock absorber support tube, the first damping friction ring is sleeved on the shock absorber steel tube and slides with the shock absorber steel tube in a damping manner; the second damping friction ring is fixedly arranged inside the second shock absorber support tube, the second damping friction ring is located at the end of the second shock absorber support tube facing away from the first shock absorber support tube, the second damping friction ring is sleeved on the shock absorber steel tube and slides with the shock absorber steel tube in a damping manner.
[0007] By adopting the above technical solution, when the damping shock absorber is in operation, the shock absorber steel tube reciprocates relative to the first shock absorber support tube and the second shock absorber support tube. During this process, the shock absorber steel tube strongly rubs against the first damping friction ring and the second damping friction ring at the same time. The friction between the first damping friction ring, the second damping friction ring and the shock absorber steel tube slows down the speed of the shock absorber steel tube reciprocating relative to the first shock absorber support tube and the second shock absorber support tube, thereby achieving the effect of vibration reduction. Since the present application provides the first damping friction ring and the second damping friction ring, and the first damping friction ring and the second damping friction ring are respectively located at the two ends of the second shock absorber support tube, that is, compared with one damping friction ring in the traditional technology, the present application provides two damping friction rings, and compared with the traditional technology, the present application provides one more damping friction ring. Therefore, the first damping friction ring and the second damping friction ring in the present application can provide more effective lateral support for the shock absorber steel pipe, improve or avoid the defect that the shock absorber steel pipe is easy to hit the shock absorber support pipe, reduce or avoid the abnormal vibration noise that may be generated by the damping shock absorber during operation, and improve the vibration and noise performance of the entire washing machine.
[0008] In the optional technical solution of the above-mentioned damping shock absorber, an internal thread is provided on the inner wall of the first shock absorber support tube matching with the second shock absorber support tube, and an external thread is provided on the outer wall of the second shock absorber support tube matching with the first shock absorber support tube. The internal thread on the inner wall of the first shock absorber support tube is threadedly matched with the external thread on the outer wall of the second shock absorber support tube, and the first shock absorber support tube is threadedly connected with the second shock absorber support tube.
[0009] By adopting the above technical solution, the threaded connection between the first shock absorber support tube and the second shock absorber support tube is a specific connection method for fixedly connecting the first shock absorber support tube and the second shock absorber support tube. Selecting the threaded connection structure can not only ensure the firmness of the connection between the first shock absorber support tube and the second shock absorber support tube, but also quickly and efficiently realize the connection between the first shock absorber support tube and the second shock absorber support tube.
[0010] In the optional technical scheme of the above-mentioned damping shock absorber, the first shock absorber support tube has a first inner end surface inside, and the second shock absorber support tube has a second inner end surface inside, and the first inner end surface and the second inner end surface correspond to each other; the first damping friction ring sleeve is provided with an annular slider, and the annular slider is located in the second shock absorber support tube and slidably cooperates with the second shock absorber support tube, and the annular slider is located between the first inner end surface and the second inner end surface, and the axial dimension of the annular slider is smaller than the distance from the first inner end surface to the second inner end surface.
[0011] By adopting the above technical solution, the distance from the first inner end surface to the second inner end surface minus the axial dimension of the annular slider is the moving stroke of the annular slider.
[0012] When the washing machine is running at a low speed, the vibration amplitude of the outer drum is large, and when the washing machine is running at a high speed, the vibration amplitude of the outer drum is small. Therefore, when the washing machine is running at a low speed, the reciprocating movement distance of the damping shock absorber is large, and when the washing machine is running at a high speed, the reciprocating movement distance of the damping shock absorber is small.
[0013] When the washing machine is running at a low speed, the moving distance of the shock absorber steel tube relative to the second shock absorber support tube is greater than the moving stroke of the annular slider. When the annular slider does not abut the first inner end face or the second inner end face, the shock absorber steel tube drives the first damping friction ring and the annular slider to move synchronously, and there is no damping friction force between the first damping friction ring and the shock absorber steel tube. When the annular slider abuts the first inner end face or the second inner end face, there is relative movement between the shock absorber steel tube and the first damping friction ring, and there is friction between the shock absorber steel tube and the first damping friction ring, and the first damping friction ring produces a vibration reduction effect.
[0014] When the washing machine is running at high speed, the moving distance of the shock absorber steel tube relative to the second shock absorber support tube is smaller than the moving stroke of the annular slider, the annular slider never abuts against the first inner end surface or the second inner end surface, the shock absorber steel tube always drives the first damping friction ring and the annular slider to move synchronously, there is no damping friction force between the first damping friction ring and the shock absorber steel tube, and the first damping friction ring never produces a vibration reduction effect.
[0015] That is, according to the running speed of the washing machine, the first damping friction ring can generate a variable damping friction force to match the vibration amount of the washing machine at different running speeds.
[0016] In the optional technical solution of the above-mentioned damping shock absorber, a guide column is provided on the circumferential outer wall of the annular slider, and a guide groove is opened on the inner wall of the second shock absorber support tube at a position corresponding to the guide column. The guide column is located in the guide groove and slidably cooperates with the second shock absorber support tube.
[0017] By adopting the above technical solution, the guide groove on the inner wall of the second shock absorber support tube can guide the sliding of the guide column on the circumferential outer wall of the annular slider and limit the sliding direction. When the annular slider slides relative to the second shock absorber support tube, the annular slider is prevented from circumferential rotation, so that the axial movement of the annular slider remains smooth and stable.
[0018] In an optional technical solution of the damping shock absorber, there are multiple guide columns and they are evenly distributed circumferentially about the axis of the annular slider, and there are multiple guide grooves and they are evenly distributed circumferentially about the axis of the second shock absorber support tube.
[0019] By adopting the above technical solution, the center of gravity of the annular slider and the second shock absorber support tube can be located on their common overlapping axes, keeping the center of gravity of the shock absorber on its own central axis, and keeping the center of gravity of the shock absorber balanced during operation.
[0020] In the optional technical solution of the above-mentioned damping vibration absorber, a first thermal expansion and contraction ring is fixedly arranged in the gap between the first damping friction ring and the annular slider, and the first thermal expansion and contraction ring is clamped together by the first damping friction ring and the annular slider, and the first thermal expansion and contraction ring has the characteristics of thermal expansion and contraction.
[0021] By adopting the above technical solution, it is worth mentioning that the damping value of the traditional damping vibration absorber has a strong correlation with temperature. When the temperature is high, the damping value of the damping vibration absorber becomes smaller, which makes it difficult to start the washing machine to dehydrate. When the temperature is low, the damping value of the damping vibration absorber becomes larger, which causes the washing machine to dehydrate and vibrate loudly. The heat generated by the periodic stretching motion of the damping vibration absorber itself and different ambient temperatures will affect the damping value of the damping vibration absorber, which cannot meet the usage scenario requirements of the washing machine under different ambient temperatures.
[0022] Since the present application is provided with a first thermal expansion and contraction ring, when the ambient temperature or the temperature of the damping shock absorber itself increases, the first thermal expansion and contraction ring expands, and the first thermal expansion and contraction ring squeezes the first damping friction ring and the annular slider at the same time, increasing the interaction force between the first damping friction ring and the annular slider, increasing the friction between the shock absorber steel tube and the first damping friction ring, and compensating for the reduction of the friction between the first damping friction ring and the shock absorber steel tube due to the increase in temperature. When the ambient temperature or the temperature of the damping shock absorber itself decreases, the first thermal expansion and contraction ring contracts, the interaction force between the first damping friction ring and the annular slider decreases, and the friction between the shock absorber steel tube and the first damping friction ring decreases, compensating for the increase of the friction between the first damping friction ring and the shock absorber steel tube due to the decrease in temperature.
[0023] In the optional technical solution of the above-mentioned damping shock absorber, a first buffer ring is arranged on the first inner end surface, and a second buffer ring is arranged on the second inner end surface. The first buffer ring and the second buffer ring are both loosely matched with the shock absorber steel pipe, and the first buffer ring and the second buffer ring are respectively facing the two ends of the annular slider.
[0024] By adopting the above-mentioned technical solution, since the first buffer ring and the second buffer ring are both made of deformable elastic material, when the annular slider hits the first buffer ring or the second buffer ring, the interaction force between the annular slider and the first buffer ring, the second buffer ring is reduced, and the mutual impact force between the annular slider and the first shock absorber support tube or the second shock absorber support tube can be reduced, thereby achieving a buffering effect.
[0025] In the optional technical solution of the above-mentioned damping shock absorber, an annular first dovetail groove is provided on the first inner end surface, and the first buffer ring is provided with an annular first dovetail clip, the first dovetail clip is inserted into the first dovetail groove and is clamped and fixed to the first shock absorber support tube; an annular second dovetail groove is provided on the second inner end surface, and the second buffer ring is provided with an annular second dovetail clip, the second dovetail clip is inserted into the second dovetail groove and is clamped and fixed to the second shock absorber support tube.
[0026] By adopting the above technical solution, the first dovetail clip is directly inserted into the first dovetail groove, so that the first buffer ring can be quickly installed on the first shock absorber support tube; the second dovetail clip is directly inserted into the second dovetail groove, so that the second buffer ring can be quickly installed on the second shock absorber support tube. The first buffer ring and the second buffer ring can be quickly disassembled and assembled.
[0027] In the optional technical solution of the above-mentioned damping shock absorber, the interior of the second shock absorber support tube has a third inner end surface facing away from the second inner end surface, and an annular damping cap is inserted into the end of the second shock absorber support tube facing away from the first shock absorber support tube, and the annular damping cap is sleeved on the shock absorber steel tube and has a gap with the shock absorber steel tube, and the annular damping cap has a limiting end surface facing the third inner end surface, and the third inner end surface and the limiting end surface are respectively pressed against the two ends of the second damping friction ring.
[0028] By adopting the above technical solution, the annular damping cap clamps the second damping friction ring through the limiting end surface inside the annular damping cap and the third inner end surface inside the second shock absorber support tube, thereby achieving fixed installation of the second damping friction ring. When replacing the second damping friction ring, the annular damping cap is pulled out from the second shock absorber support tube to remove the second damping friction ring, and the new second damping friction ring is inserted into the shock absorber steel tube, and then the disassembled annular damping cap is inserted into the second shock absorber support tube, so that the second damping friction ring can be quickly clamped and fixed, and the whole process can quickly achieve the replacement of the second damping friction ring.
[0029] In the optional technical solution of the above-mentioned damping shock absorber, a second thermal expansion and contraction ring is fixedly arranged in the gap between the second damping friction ring and the damping cap, and the second thermal expansion and contraction ring is clamped together by the second damping friction ring and the damping cap, and the second thermal expansion and contraction ring has the characteristics of thermal expansion and contraction.
[0030] By adopting the above technical solution, when the ambient temperature or the temperature of the damping shock absorber itself increases, the second thermal expansion and contraction ring expands, and the second thermal expansion and contraction ring squeezes the second damping friction ring and the annular damping cap at the same time, increasing the interaction force between the second damping friction ring and the annular damping cap. In turn, the annular damping cap exerts a force on the second damping friction ring, increasing the friction between the second damping friction ring and the shock absorber steel pipe, compensating for the reduction of the friction between the shock absorber steel pipe and the second damping friction ring caused by the increase of the ambient temperature or the temperature of the damping shock absorber itself. When the ambient temperature or the temperature of the damping shock absorber itself decreases, the second thermal expansion and contraction ring shrinks itself, reducing the force exerted on the annular damping cap and the second damping friction ring, and reducing the friction between the second damping friction ring and the shock absorber steel pipe, compensating for the increase of the friction between the shock absorber steel pipe and the second damping friction ring caused by the decrease of the ambient temperature or the temperature of the damping shock absorber itself.
[0031] In a second aspect, an embodiment of the present application provides a washing machine, comprising the damping vibration absorber as described above.
[0032] By adopting the above technical scheme, the damping vibration absorber in the present application provides two damping friction rings compared to the one damping friction ring in the traditional technology. Compared with the traditional technology, the present application has one more damping friction ring. Therefore, the first damping friction ring and the second damping friction ring in the present application can provide more effective lateral support for the vibration absorber steel pipe, improve or avoid the defect that the vibration absorber steel pipe is easy to hit the vibration absorber support pipe, reduce or avoid abnormal vibration noise that may be generated by the damping vibration absorber during operation, and improve the vibration and noise performance of the whole washing machine.
[0033] The provision of the first thermal expansion and contraction ring and the second thermal expansion and contraction ring can also compensate for the change in the damping value of the damping shock absorber caused by the change in temperature, and can meet the use scenario requirements of the washing machine under different ambient temperatures. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0035] Figure 1 is a schematic structural diagram of a damping vibration absorber provided in an embodiment of the present application;
[0036] Figure 2 is a partial longitudinal cross-sectional view of a damping vibration absorber provided in an embodiment of the present application;
[0037] Figure 3 It is an exploded view of the annular slider of the damping shock absorber provided in an embodiment of the present application and the second shock absorber support tube being separated from each other.
[0038] Reference numerals:
[0039] 100- shock absorber steel pipe;
[0040] 200 - first shock absorber support tube; 210 - first inner end surface; 211 - first dovetail groove; 220 - first buffer ring; 221 - first dovetail clip;
[0041] 300-second shock absorber support tube; 310-second inner end surface; 311-second dovetail groove; 320-second buffer ring; 321-second dovetail clamping strip; 330-third inner end surface; 340-guide groove;
[0042] 400-first damping friction ring;
[0043] 500-second damping friction ring;
[0044] 600-annular slider; 610-guide column;
[0045] 700-annular damping cap; 710-limiting end face;
[0046] 800-the first thermal expansion and contraction ring;
[0047] 900-Second thermal expansion and contraction ring.
[0048] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0049] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0050] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein, for example.
[0051] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more optional or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.
[0052] As mentioned above in the background technology, the damping vibration absorber is an important component of the washing machine. The damping vibration absorber mainly uses damping friction to consume the vibration energy generated by the core components of the washing machine, reduce the transmission of vibration energy to the washing machine body and the ground, and ensure the vibration and noise performance of the entire washing machine.
[0053] The damping vibration absorber of the existing washing machine mainly includes a vibration absorber steel pipe, a vibration absorber support pipe and a friction ring structure. One end of the vibration absorber steel pipe is connected to the bottom of the washing machine body, one end of the vibration absorber support pipe is sleeved with the other end of the vibration absorber steel pipe and installed with a gap with the vibration absorber steel pipe, and the other end of the vibration absorber support pipe is connected to the outer barrel of the washing machine; most of the damping vibration absorbers are single damping friction ring structures, that is, there is only one set of damping friction rings that rub against the vibration absorber steel pipe to generate damping friction force, and the damping friction rings are arranged inside one end of the vibration absorber support pipe.
[0054] This structure has a more obvious technical disadvantage: the end of the shock absorber steel pipe away from the damping friction ring has insufficient lateral stiffness, which causes the shock absorber steel pipe to easily hit the shock absorber support tube. The damping shock absorber will produce abnormal vibration noise during operation, causing the vibration and noise performance of the entire washing machine to deteriorate.
[0055] Therefore, in order to improve or solve the above technical problems, the embodiment of the present application provides a damping vibration absorber and a washing machine. In the technical solution provided in the embodiment of the present application, the damping vibration absorber includes: a first vibration absorber support tube, one end of which is connected to the outer barrel of the washing machine; a second vibration absorber support tube, both ends of which are opened, one end of which is inserted into the first vibration absorber support tube and fixedly connected to the first vibration absorber support tube; a vibration absorber steel tube, one end of which is inserted into the first vibration absorber support tube and the second vibration absorber support tube and has a clearance fit with the first vibration absorber support tube and the second vibration absorber support tube. The other end of the steel pipe is connected to the bottom of the washing machine body; a first damping friction ring is fixedly arranged inside the second shock absorber support tube, the first damping friction ring is located at the end of the second shock absorber support tube facing the first shock absorber support tube, the first damping friction ring is sleeved on the shock absorber steel pipe and slides with the shock absorber steel pipe in a damping manner; a second damping friction ring is fixedly arranged inside the second shock absorber support tube, the second damping friction ring is located at the end of the second shock absorber support tube facing away from the first shock absorber support tube, the second damping friction ring is sleeved on the shock absorber steel pipe and slides with the shock absorber steel pipe in a damping manner.
[0056] By adopting the above technical solution, when the damping shock absorber is in operation, the shock absorber steel tube reciprocates relative to the first shock absorber support tube and the second shock absorber support tube. During this process, the shock absorber steel tube strongly rubs against the first damping friction ring and the second damping friction ring at the same time. The friction force between the first damping friction ring, the second damping friction ring and the shock absorber steel tube slows down the speed of the shock absorber steel tube reciprocating relative to the first shock absorber support tube and the second shock absorber support tube, thereby achieving a vibration reduction effect.
[0057] Since the present application sets a first damping friction ring and a second damping friction ring, and the first damping friction ring and the second damping friction ring are respectively located at the two ends of the second shock absorber support tube, that is, compared with one damping friction ring in the traditional technology, the present application sets two damping friction rings, and compared with the traditional technology, the present application sets one more damping friction ring. Therefore, the first damping friction ring and the second damping friction ring in the present application can provide more effective lateral support for the shock absorber steel pipe, can improve or avoid the defect that the shock absorber steel pipe is easy to hit the shock absorber support tube, reduce or avoid abnormal vibration noise that may be generated by the damping shock absorber during operation, and improve the vibration and noise performance of the washing machine.
[0058] Reference below Figure 1-Figure 3 The damping vibration isolator and the washing machine provided in the embodiments of the present application are described in detail.
[0059] Figure 1 is a schematic diagram of the structure of the damping vibration absorber provided in the embodiment of the present application, Figure 2 is a partial longitudinal cross-sectional view of the damping vibration absorber provided in the embodiment of the present application. Figure 1 and Figure 2 The embodiment of the present application provides a damping vibration absorber, including: a first vibration absorber support tube 200, one end of which is connected to the outer barrel of a washing machine; a second vibration absorber support tube 300, both ends of which are open; an internal thread is machined on the inner wall of the first vibration absorber support tube 200, and an external thread is machined on the outer wall of the second vibration absorber support tube 300, the internal thread on the inner wall of the first vibration absorber support tube 200 is threadedly matched with the external thread on the outer wall of the second vibration absorber support tube 300, and the first vibration absorber support tube 200 is threadedly connected with the second vibration absorber support tube 300; a vibration absorber steel pipe 100, one end of which is inserted into the first vibration absorber support tube 200 and the second vibration absorber support tube 300 and is connected to the first vibration absorber support tube 200 and the second vibration absorber support tube 300 0 clearance fit, the other end of the shock absorber steel pipe 100 is connected to the bottom of the washing machine body; the first damping friction ring 400 is arranged inside the second shock absorber support pipe 300, the first damping friction ring 400 is located at the end of the second shock absorber support pipe 300 facing the first shock absorber support pipe 200, the first damping friction ring 400 is sleeved on the shock absorber steel pipe 100 and is damped and slidably matched with the shock absorber steel pipe 100; the second damping friction ring 500 is fixedly arranged inside the second shock absorber support pipe 300, the second damping friction ring 500 is located at the end of the second shock absorber support pipe 300 away from the first shock absorber support pipe 200, the second damping friction ring 500 is sleeved on the shock absorber steel pipe 100 and is damped and slidably matched with the shock absorber steel pipe 100. Specifically, the first damping friction ring 400 and the second damping friction ring 500 can be made of polyurethane raw materials.
[0060] Specifically, when the damping shock absorber is in operation, the shock absorber steel tube 100 reciprocates relative to the first shock absorber support tube 200 and the second shock absorber support tube 300. During this process, the shock absorber steel tube 100 is strongly rubbed against the first damping friction ring 400 and the second damping friction ring 500 at the same time. The friction force between the first damping friction ring 400, the second damping friction ring 500 and the shock absorber steel tube 100 slows down the speed of the shock absorber steel tube 100 reciprocating relative to the first shock absorber support tube 200 and the second shock absorber support tube 300, thereby achieving a vibration reduction effect.
[0061] Specifically, since the present application provides a first damping friction ring 400 and a second damping friction ring, and the first damping friction ring 400 and the second damping friction ring are respectively located at the two ends of the second shock absorber support tube 300, that is, compared with one damping friction ring in the conventional technology, the present application provides two damping friction rings, and compared with the conventional technology, the present application provides one more damping friction ring. Therefore, the first damping friction ring 400 and the second damping friction ring 500 in the present application can provide more effective lateral support for the shock absorber steel tube 100, improve or avoid the defect that the shock absorber steel tube 100 is easy to hit the shock absorber support tube, reduce or avoid abnormal vibration noise that may be generated by the damping shock absorber during operation, and improve the vibration and noise performance of the washing machine.
[0062] Please refer to Figure 2 In some embodiments provided in the present application, the first shock absorber support tube 200 has a first inner end surface 210 inside, and the first inner end surface 210 is perpendicular to the axis of the first shock absorber support tube 200; the second shock absorber support tube 300 has a second inner end surface 310 inside, and the second inner end surface 310 is perpendicular to the axis of the second shock absorber support tube 300, and the first inner end surface 210 and the second inner end surface 310 are opposite to each other. The first damping friction ring 400 is sleeved with an annular slider 600, and the cross section of the annular slider 600 is U-shaped. The annular slider 600 is located inside the second shock absorber support tube 300 and slidably cooperates with the second shock absorber support tube 300. The annular slider 600 is located between the first inner end surface 210 and the second inner end surface 310, and the axial dimension of the annular slider 600 is smaller than the distance from the first inner end surface 210 to the second inner end surface 310.
[0063] Please refer to Figure 2 In some embodiments provided in the present application, illustratively, a first buffer ring 220 is provided on the first inner end surface 210, and a second buffer ring 320 is provided on the second inner end surface 310. Both the first buffer ring 220 and the second buffer ring 320 are clearance-matched with the shock absorber steel pipe 100, and the first buffer ring 220 and the second buffer ring 320 are respectively oriented toward and corresponding to the two ends of the annular slider 600.
[0064] Please refer to Figure 2 , illustratively, a first annular dovetail groove 211 is formed on the first inner end surface 210, and the first buffer ring 220 is integrally formed with a first annular dovetail clip 221 at a position corresponding to the first dovetail groove 211, the first dovetail clip 221 is inserted into the first dovetail groove 211 and is clamped and fixed to the first shock absorber support tube 200; a second annular dovetail groove 311 is formed on the second inner end surface 310, and the second buffer ring 320 is integrally formed with a second annular dovetail clip 321 at a position corresponding to the second dovetail groove 311, the second dovetail clip 321 is inserted into the second dovetail groove 311 and is clamped and fixed to the second shock absorber support tube 300.
[0065] Specifically, the distance from the surface of the first buffer ring 220 to the surface of the second buffer ring 320 minus the axial dimension of the annular slider 600 is the moving stroke of the annular slider 600 .
[0066] When the washing machine is running at a low speed, the vibration amplitude of the outer drum is large, and when the washing machine is running at a high speed, the vibration amplitude of the outer drum is small. Therefore, when the washing machine is running at a low speed, the reciprocating movement distance of the damping shock absorber is large, and when the washing machine is running at a high speed, the reciprocating movement distance of the damping shock absorber is small.
[0067] When the washing machine is running at a low speed, the moving distance of the shock absorber steel pipe 100 relative to the second shock absorber support pipe 300 is greater than the moving stroke of the annular slider 600. When the annular slider 600 does not abut the first buffer ring 220 or the second buffer ring 320, the shock absorber steel pipe 100 drives the first damping friction ring 400 and the annular slider 600 to move synchronously, and there is no damping friction force between the first damping friction ring 400 and the shock absorber steel pipe 100. When the annular slider 600 abuts the first buffer ring 220 or the second buffer ring 320, there is relative movement between the shock absorber steel pipe 100 and the first damping friction ring 400, and there is friction between the shock absorber steel pipe 100 and the first damping friction ring 400, and the first damping friction ring 400 produces a vibration reduction effect.
[0068] When the washing machine is running at high speed, the moving distance of the shock absorber steel pipe 100 relative to the second shock absorber support pipe 300 is smaller than the moving stroke of the annular slider 600, and the annular slider 600 never abuts against the first buffer ring 220 or the second buffer ring 320. The shock absorber steel pipe 100 always drives the first damping friction ring 400 and the annular slider 600 to move synchronously. There is no damping friction force between the first damping friction ring 400 and the shock absorber steel pipe 100, and the first damping friction ring 400 never produces a vibration reduction effect.
[0069] That is, according to the operating speed of the washing machine, the first damping friction ring 400 can generate a variable damping friction force to match the vibration amount of different operating speeds of the washing machine.
[0070] Since the first buffer ring 220 and the second buffer ring 320 are both made of deformable elastic material, when the annular slider 600 hits the first buffer ring 220 or the second buffer ring 320, the interaction force between the annular slider 600 and the first buffer ring 220, the second buffer ring 320 is reduced, which can reduce the mutual impact force between the annular slider 600 and the first shock absorber support tube 200 or the second shock absorber support tube 300, thereby achieving a buffering effect.
[0071] Figure 3 This is an exploded view of the annular slider of the damping shock absorber provided in the embodiment of the present application and the second shock absorber support tube being separated from each other. Please refer to Figure 2 and Figure 3 In some embodiments provided in the present application, exemplarily, the circumferential outer wall of the annular slider 600 is integrally formed with a plurality of circumferentially evenly distributed guide columns 610, and the inner wall of the second shock absorber support tube 300 is provided with guide grooves 340 at positions corresponding to each guide column 610, and each guide column 610 is located in the corresponding guide groove 340 and slidably cooperates with the second shock absorber support tube 300.
[0072] Specifically, the guide groove 340 on the inner wall of the second shock absorber support tube 300 can guide the guide column 610 on the circumferential outer wall of the annular slider 600 and limit the sliding direction. When the annular slider 600 slides relative to the second shock absorber support tube 300, the annular slider 600 is prevented from rotating in the circumferential direction, so that the axial movement of the annular slider 600 remains smooth and stable. The guide columns 610 are evenly distributed circumferentially about the axis of the annular slider 600 so that the center of gravity of the annular slider 600 and the second shock absorber support tube 300 is located on their common overlapping axis, so that the center of gravity of the shock absorber is kept on its own central axis, and the center of gravity of the shock absorber is kept balanced during operation.
[0073] Please refer to Figure 2 In some embodiments provided in the present application, exemplarily, the interior of the second shock absorber support tube 300 has a third inner end surface 330 which is away from the second inner end surface 310, and the third inner end surface 330 is perpendicular to the axis of the second shock absorber support tube 300; an annular damping cap 700 is inserted into the end of the second shock absorber support tube 300 which is away from the first shock absorber support tube 200, and the annular damping cap 700 is interference fit with the second shock absorber support tube 300, the annular damping cap 700 is sleeved on the shock absorber steel pipe 100 and has a clearance fit with the shock absorber steel pipe 100, the annular damping cap 700 has a limiting end surface 710 facing the third inner end surface 330, and the limiting end surface 710 is perpendicular to the axis of the annular damping cap 700, and the third inner end surface 330 and the limiting end surface 710 are respectively pressed against the two ends of the second damping friction ring 500.
[0074] Please refer to Figure 2In some embodiments provided in the present application, exemplarily, a first thermal expansion and contraction ring 800 is fixedly arranged in the gap between the first damping friction ring 400 and the annular slider 600, and the first thermal expansion and contraction ring 800 is clamped together by the first damping friction ring 400 and the annular slider 600. The first thermal expansion and contraction ring 800 has the characteristics of thermal expansion and contraction. It is worth mentioning that the first thermal expansion and contraction ring 800 can be made of copper, iron or aluminum alloy raw materials.
[0075] It is worth mentioning that the damping value of the traditional damping vibration absorber has a strong correlation with temperature. When the temperature is high, the damping value of the damping vibration absorber becomes smaller, which makes it difficult to start the washing machine to dehydrate. When the temperature is low, the damping value of the damping vibration absorber becomes larger, which causes the washing machine to dehydrate and make loud vibration noise. The heat generated by the periodic stretching motion of the damping vibration absorber itself and different ambient temperatures will affect the damping value of the damping vibration absorber, which cannot meet the usage scenario requirements of the washing machine under different ambient temperatures.
[0076] Since the present application is provided with the first thermal expansion and contraction ring 800, when the ambient temperature or the temperature of the damping shock absorber itself increases, the first thermal expansion and contraction ring 800 expands, and the first thermal expansion and contraction ring 800 squeezes the first damping friction ring 400 and the annular slider 600 at the same time, increases the interaction force between the first damping friction ring 400 and the annular slider 600, increases the friction between the shock absorber steel pipe 100 and the first damping friction ring 400, and compensates for the decrease in friction between the first damping friction ring 400 and the shock absorber steel pipe 100 due to the increase in temperature. When the ambient temperature or the temperature of the damping shock absorber itself decreases, the first thermal expansion and contraction ring 800 contracts, the interaction force between the first damping friction ring 400 and the annular slider 600 decreases, and the friction between the shock absorber steel pipe 100 and the first damping friction ring 400 decreases, which compensates for the increase in friction between the first damping friction ring 400 and the shock absorber steel pipe 100 due to the decrease in temperature.
[0077] Please refer to Figure 2 In some embodiments provided in the present application, exemplarily, a second thermal expansion and contraction ring 900 is fixedly arranged in the gap between the second damping friction ring 500 and the damping cap, and the second thermal expansion and contraction ring 900 is clamped together by the second damping friction ring 500 and the damping cap. The second thermal expansion and contraction ring 900 has the characteristics of thermal expansion and contraction. It is worth mentioning that the second thermal expansion and contraction ring 900 can be made of copper, iron or aluminum alloy raw materials.
[0078] Specifically, when the ambient temperature or the temperature of the damping shock absorber itself rises, the second thermal expansion and contraction ring 900 expands, and the second thermal expansion and contraction ring 900 squeezes the second damping friction ring 500 and the annular damping cap 700 at the same time, thereby increasing the interaction force between the second damping friction ring 500 and the annular damping cap 700. Conversely, the annular damping cap 700 applies a force to the second damping friction ring 500, thereby increasing the friction between the second damping friction ring 500 and the shock absorber steel pipe 100, thereby compensating for the decrease in friction between the shock absorber steel pipe 100 and the second damping friction ring 500 caused by the increase in ambient temperature or the temperature of the damping shock absorber itself. When the ambient temperature or the temperature of the damping shock absorber itself decreases, the second thermal expansion and contraction ring 900 shrinks itself, reducing the force applied to the annular damping cap 700 and the second damping friction ring 500, and the friction between the second damping friction ring 500 and the shock absorber steel pipe 100 decreases, compensating for the increase in friction between the shock absorber steel pipe 100 and the second damping friction ring 500 caused by the decrease in ambient temperature or the temperature of the damping shock absorber itself.
[0079] An embodiment of the present application also provides a washing machine, comprising the damping vibration absorber as described above.
[0080] Specifically, compared with one damping friction ring in the traditional technology, the damping vibration absorber in the present application provides two damping friction rings. Compared with the traditional technology, the present application has one more damping friction ring. Therefore, the first damping friction ring 400 and the second damping friction ring 500 in the present application can provide more effective lateral support for the vibration absorber steel pipe 100, and can improve or avoid the defect that the vibration absorber steel pipe 100 is easy to hit the vibration absorber support pipe, reduce or avoid abnormal vibration noise that may be generated by the damping vibration absorber during operation, and improve the vibration and noise performance of the washing machine.
[0081] Specifically, the provision of the first thermal expansion and contraction ring 800 and the second thermal expansion and contraction ring 900 can also compensate for the change in the damping value of the damping shock absorber caused by temperature changes, and can meet the use scenario requirements of the washing machine under different ambient temperatures.
[0082] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.
[0083] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.
[0084] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.
[0085] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).
[0086] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A damping shock absorber, characterized in that: include: A first shock absorber support tube, one end of which is used to be connected to the outer tub of the washing machine; A second shock absorber support tube, both ends of which are open, one end of which is inserted into the first shock absorber support tube and fixedly connected to the first shock absorber support tube; A shock absorber steel pipe, one end of which is inserted into the first shock absorber support pipe and the second shock absorber support pipe and is gap-matched with the first shock absorber support pipe and the second shock absorber support pipe, and the other end of the shock absorber steel pipe is used to be connected to the bottom of the washing machine body; A first damping friction ring is arranged inside the second shock absorber support tube, the first damping friction ring is located at the end of the second shock absorber support tube facing the first shock absorber support tube, the first damping friction ring is sleeved on the shock absorber steel tube and is in damping sliding cooperation with the shock absorber steel tube; The second damping friction ring is fixedly arranged inside the second shock absorber support tube. The second damping friction ring is located at the end of the second shock absorber support tube away from the first shock absorber support tube. The second damping friction ring is sleeved on the shock absorber steel tube and slides with the shock absorber steel tube in a damping manner.
2. The damping vibration absorber according to claim 1, characterized in that: An internal thread is arranged on the inner wall of the first shock absorber support tube matching with the second shock absorber support tube, and an external thread is arranged on the outer wall of the second shock absorber support tube matching with the first shock absorber support tube. The internal thread on the inner wall of the first shock absorber support tube is threadably matched with the external thread on the outer wall of the second shock absorber support tube, and the first shock absorber support tube is threadedly connected with the second shock absorber support tube.
3. The damping vibration absorber according to claim 1, characterized in that: The first shock absorber support tube has a first inner end surface inside, and the second shock absorber support tube has a second inner end surface inside, and the first inner end surface and the second inner end surface correspond to each other; The first damping friction ring sleeve is provided with an annular slider, which is located in the second shock absorber support tube and slidingly cooperates with the second shock absorber support tube, and the annular slider is located between the first inner end surface and the second inner end surface, and the axial dimension of the annular slider is smaller than the distance from the first inner end surface to the second inner end surface.
4. The damping vibration absorber according to claim 3, characterized in that: The circumferential outer wall of the annular slider is provided with a guide column, and the inner wall of the second shock absorber support tube is provided with a guide groove at a position corresponding to the guide column. The guide column is located in the guide groove and slidably cooperates with the second shock absorber support tube.
5. The damping vibration absorber according to claim 4, characterized in that: There are a plurality of guide posts which are evenly distributed circumferentially about the axis of the annular slider, and there are a plurality of guide grooves which are evenly distributed circumferentially about the axis of the second shock absorber support tube.
6. The damping vibration absorber according to any one of claims 3 to 5, characterized in that: A first thermal expansion and contraction ring is fixedly arranged in the gap between the first damping friction ring and the annular slider. The first thermal expansion and contraction ring is clamped together by the first damping friction ring and the annular slider. The first thermal expansion and contraction ring has the characteristics of thermal expansion and contraction.
7. The damping vibration absorber according to any one of claims 3 to 5, characterized in that: A first buffer ring is arranged on the first inner end surface, and a second buffer ring is arranged on the second inner end surface. Both the first buffer ring and the second buffer ring are loosely matched with the shock absorber steel pipe, and the first buffer ring and the second buffer ring are respectively facing the two ends of the annular slider.
8. The damping vibration absorber according to claim 7, characterized in that: The first inner end surface is provided with an annular first dovetail groove, the first buffer ring is provided with an annular first dovetail clip, the first dovetail clip is clipped into the first dovetail groove and is clipped and fixed to the first shock absorber support tube; The second inner end surface is provided with an annular second dovetail groove, and the second buffer ring is provided with an annular second dovetail clamping strip, which is clamped into the second dovetail groove and fixedly connected to the second shock absorber support tube.
9. The damping vibration absorber according to any one of claims 3 to 5, characterized in that: The interior of the second shock absorber support tube has a third inner end surface which is away from the second inner end surface. An annular damping cap is inserted into the end of the second shock absorber support tube which is away from the first shock absorber support tube. The annular damping cap is sleeved on the shock absorber steel pipe and has a clearance fit with the shock absorber steel pipe. The annular damping cap has a limiting end surface facing the third inner end surface. The third inner end surface and the limiting end surface are respectively pressed against the two ends of the second damping friction ring.
10. The damping vibration absorber according to claim 9, characterized in that: A second thermal expansion and contraction ring is fixedly arranged in the gap between the second damping friction ring and the damping cap. The second thermal expansion and contraction ring is clamped together by the second damping friction ring and the damping cap. The second thermal expansion and contraction ring has the characteristics of thermal expansion and contraction.
11. A washing machine, characterized in that: The invention comprises a damping vibration absorber as claimed in any one of claims 1 to 10.