JP7141527B2 - Attenuation variable damper and clothes handling equipment - Google Patents

Description

FIELD OF THE INVENTION The present invention is in the field of damping shock absorbers and, in particular, provides variable damping dampers and clothes handling devices.

A conventional drum washing machine mainly includes a casing, an outer cylinder and an inner cylinder. Here, the outer cylinder is fixedly connected to the damper and the casing by means of hangers. Specifically, the top of the outer cylinder is fixedly connected to the top of the casing via a hanger, and the bottom of the outer cylinder is fixedly connected to the bottom of the casing via a damper. The inner cylinder is rotatably installed on the outer cylinder.

During operation of the washing machine, the clothes are unevenly distributed in the inner cylinder, so that they rock up and down and left and right together with the outer cylinder when the inner cylinder rotates. Installation of hangers and dampers can reduce the swing strength and width of the barrel. In particular, the damper absorbs and eliminates the vibration of the washing machine, prevents the crawling of the washing machine, reduces the noise of the washing machine, further guarantees the performance of the washing machine, and extends the life of the washing machine.

However, the damping force generated by dampers in the prior art is generally a constant value and cannot be adapted to all modes of washing machines. When the washing machine performs high-speed dehydration, the amplitude of the outer cylinder is small and the required damping force is also small.

Therefore, Patent Document 1 discloses a damper that includes a cylinder, a piston rod that is inserted into the cylinder, and a movable damping member that is fitted to the piston rod. Wherein, the piston rod is provided with a ring-shaped groove for mounting the movable damping member, and the diameter of the ring-shaped groove gradually increases from the center toward both sides. When the movable damping member is located in the middle position of the ring-shaped groove, the damping force between the movable damping member and the cylinder is small, and it is used to remove vibration generated during high-speed dehydration of the washing machine. When positioned on both sides of the ring-shaped groove, the damping force between the movable damping member and the cylinder is large, and is used to remove vibrations generated during washing, rinsing, and low-speed dehydration of the washing machine.

However, in the damper disclosed in Patent Document 1, the movable damping member is easily deformed by being stretched by both ends of the ring-shaped groove during long-term use, and furthermore, the damper cannot be adapted to the intermediate position of the ring-shaped groove. Therefore, the damper loses its damping effect during high-speed dehydration of the washing machine, further increasing the noise of the washing machine.

Chinese Patent Application Publication No. 1519418

Therefore, there is a need in the art for new variable attenuation dampers and garment handling devices to solve the above-mentioned problems.

In order to solve the above-mentioned problems in the prior art, the present invention provides a variable damping damper to solve the problem that the damping member of the conventional variable damping damper is deformed and easily broken, and the variable damping damper The damper includes a sleeve, a plunger, and a damping ring, the plunger is formed with a ring-shaped diameter-varying groove, the plunger is slidably inserted into the sleeve along an axial direction, and the diameter-varying The groove is always located in the sleeve, the damping ring is fitted in the variable diameter groove, the outer end of the damping ring abuts the inner wall of the sleeve, and the damping ring is attached to the damping It can be deformed along the radial direction so that the diameter of the inner end of the ring matches the diameter of said variable diameter groove.

In a preferred technical aspect of the damping variable damper, the damping ring is provided with an opening, and the damping ring increases radially as the opening increases, and increases radially as the opening decreases. can be smaller.

In a preferred technical aspect of the variable damping damper, the damping ring includes an inner friction ring slidably connected to the plunger and an outer friction ring slidably connected to the sleeve, and the opening is defined by the inner friction ring The first opening causes the inner friction ring to be formed as an open ring, and the outer friction ring is fitted to the outside of the inner friction ring.

In a preferred technical aspect of the variable attenuation damper, the outer friction ring is an integrally formed ring-shaped structure.

In a preferred technical aspect of the variable attenuation damper, the opening includes a second opening formed in the outer friction ring, the second opening causing the outer friction ring to be formed as an open ring.

In a preferred technical aspect of the variable attenuation damper, the outer friction ring includes a plurality of friction sheets arranged at regular intervals in the circumferential direction of the inner friction ring.

In a preferred technical aspect of the variable attenuation damper, two axial side ends of the outer friction ring are respectively provided with a plurality of convex structures.

In a preferred technical aspect of the variable damping damper, the damping ring is manufactured using an elastic material, and/or the variable diameter groove is a stepped ring-shaped groove, and/or the variable The diameter of the radial groove gradually increases from the center to both sides, and/or the variable diameter grooves are provided symmetrically along the radial direction.

The present invention also provides a clothes processing apparatus including a variable attenuation damper according to any one of the above preferred embodiments.

In a preferred technical aspect of the clothes processing apparatus, the clothes processing apparatus includes at least one of a washing machine, a dryer, and an integrated washing and drying machine.

As can be understood by those skilled in the art, in a preferred technical aspect of the present invention, the plunger is provided with a ring-shaped diameter-varying groove so that the damping ring can be deformed along the radial direction, so that the inside of the damping ring The diameter of the end can vary according to the diameter of the variable diameter groove. In this way, the radially deformable damping ring of the present invention not only can adapt to changes in the diameter of the variable diameter groove, but also can be It can effectively improve the reliability of the damper and improve the service life.

As will be appreciated by those skilled in the art, when the damping ring is in a smaller diameter position within the variable diameter groove, the pressure of the damping ring against the sleeve is less and the damping force that can be generated between the two is less, and the damping ring is less deformed. At the larger diameter position in the groove, the pressure of the damping ring against the sleeve is greater and the damping force that can be generated between the two is also greater.

Further, an aperture is provided in the damping ring of the present invention such that the aperture increases as the damping ring increases in the radial direction and decreases as the damping ring decreases in the radial direction. In other words, the damping ring of the present invention can achieve radial deformation by varying the size of the opening in it. Therefore, the damping ring of the present invention effectively avoids the irreversible deformation that occurs in the thickness when the damping ring is pressed in the radial direction for a long time, and the damper is more reliable than the damping ring of the prior art. You can guarantee the sex.

1 is a side view of a variable attenuation damper of the present invention; FIG. FIG. 2 is an exploded view of the structure of the variable attenuation damper of the present invention; 3 is an enlarged view of part A of FIG. 2; FIG. FIG. 2 is a front view of the variable attenuation damper of FIG. 1; FIG. 5 is a cross-sectional view along the BB direction of FIG. 4; FIG. 6 is an enlarged view of part C of FIG. 5; FIG. 7 is a cross-sectional view along the EE direction of FIG. 6; FIG. 7 is a cross-sectional view along the FF direction of FIG. 6; FIG. 7 is a cross-sectional view along the GG direction of FIG. 6; FIG. 7 is a cross-sectional view along the HH direction of FIG. 6; FIG. 7 is a cross-sectional view along the JJ direction of FIG. 6;

Preferred embodiments of the present invention will now be described with reference to the drawings.

Persons skilled in the art will understand that the embodiments herein are merely for explaining the technical principles of the present invention and do not limit the protection scope of the present invention. For example, the embodiments herein describe the variable attenuation damper of the present invention by taking a drum washing machine as an example, but the variable attenuation damper of the present invention can be applied to any other vehicle such as automobiles, motorcycles, electric vehicles, and bicycles. It can also be applied to possible equipment. Persons skilled in the art can adjust it according to their needs to suit the specific application situation, and the adjusted technical solution still falls within the protection scope of the present invention.

In the description of the present invention, directions or positional relationships such as "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", and "outside" are The terminology shown is simply based on the orientation or positional relationship shown in the drawings, which is merely for ease of explanation, noting that the device or element has a particular orientation and that the device or element has a particular orientation. It does not imply that you must configure and operate with Therefore, it cannot be understood as a limitation to the invention. Also, the terms "first", "second", and "third" are used only for descriptive purposes and are not to be understood as indicating or implying relative importance.

In the description of the present invention, the terms "attachment", "connection", and "coupling" should be understood in a broad sense unless otherwise specified or limited. , may be a removable connection, an integral connection, a direct connection, an indirect connection by an intermediate medium, or a communication within the two elements. A person skilled in the art can understand the specific meaning of the above-mentioned terms in the present invention according to the specific situation.

As shown in FIGS. 1 to 5, the damping variable damper of the present invention mainly includes a sleeve 1, a plunger 2 and a damping ring 3. As shown in FIG. Here, the plunger 2 is axially slidably inserted into the sleeve 1, the damping ring 3 is radially provided between the sleeve 1 and the plunger 2, and the outer end (outer peripheral surface) of the damping ring 3 is , the inner wall of the sleeve 1 , and the inner end (inner peripheral surface) of the damping ring 3 abuts the outer wall (outer wall) of the plunger 2 . When the plunger 2 slides axially with respect to the sleeve 1, the damping ring 3 generates a damping force and prevents the plunger 2 from sliding. Furthermore, damping grease is further provided at the inner and/or outer ends of the damping ring 3 to avoid wear of the damping ring 3 when sliding. Specifically, this damping grease may be placed on the inner and/or outer ends of the damping ring 3 in a coated manner.

As shown in FIGS. 1 and 2, the remote ends of the sleeve 1 and plunger 2 are each provided with a hinge ring (not shown) so that the sleeve 1 can move to the other via the hinge rings therein. structure, device or equipment, and plunger 2 can be hingedly connected to other structures, devices or equipment via hinge rings therein.

As shown in FIGS. 2, 3, 5, and 6, the plunger 2 is provided with a ring-shaped variable diameter groove 21 that gradually increases from the center toward both sides. Further, the variable diameter groove 21 is a stepped ring-shaped groove. Further, the variable diameter grooves 21 are installed symmetrically in the radial direction. Specifically, as shown in FIG. 3, the variable diameter groove 21 is symmetrical in the vertical direction of FIG. The diameters of the steps of , gradually increase from the center to the outside.

For ease of explanation, hereinafter, the right end of the diameter-changing groove 21 in FIG. 6 is referred to as the first side end, and the left end of the diameter-changing groove 21 in FIG. 6 is referred to as the second side end.

As shown in FIG. 6, the portion between the intermediate position and the first side end of the variable diameter groove 21 includes five ring-shaped grooves D1, D2, D3, D4 and D5 from left to right. The diameters of these five ring-shaped grooves have a numerical magnitude relationship of D1<D2<D3<D4<D5. Similarly, the portion between the intermediate position and the second side end of the variable diameter groove 21 includes five ring-shaped grooves D1, D2, D3, D4 and D5 from right to left. Preferably, a smooth transition between two adjacent ring-like rings is provided by an arcuate chamfer so that the damping ring 3 can move smoothly between each ring-like ring.

As can be understood by those skilled in the art, the number of stepped ring-shaped grooves in the variable diameter groove 21 is not limited to the above five (D1, D2, D3, D4, D5), and other It can be any number. For example, it may be two, three, four, six, seven, eight, and so on.

Also, in other possible embodiments of the present invention, those skilled in the art may, if desired, provide the variable diameter groove 21 in a ring-shaped groove with a smooth transition in the axial direction, preferably this. The edge of the tangent surface in the axial direction of the diameter-varying groove 21 is arcuate. Alternatively, the variable diameter groove 21 is provided in a ring-shaped groove of equal diameter.

As shown in FIGS. 3 and 6 , the damping ring 3 of the present invention mainly includes an inner friction ring 31 and an outer friction ring 32 . When the variable damping damper of the present invention is assembled, the inner friction ring 31 is fitted on the outer side of the plunger 2, the outer friction ring 32 is fitted on the outer side of the inner friction ring 31, and the outer end of the outer friction ring 32 is fitted. abuts the inner wall of the sleeve 1 .

As shown in FIG. 3 , the inner friction ring 31 is formed with a first opening 311 , and due to the presence of the first opening 311 , the inner friction ring 31 is formed as an open ring. When the inner friction ring 31 deforms radially and becomes larger in diameter, the first opening 311 becomes larger, and when the inner friction ring 31 deforms radially and becomes smaller in diameter, the first opening 311 becomes smaller.

With continued reference to FIG. 3, the outer friction ring 32 is formed with a second opening 321 and the presence of the second opening 321 forms an open ring in the outer friction ring 32 . When the outer friction ring 32 deforms in the radial direction and becomes larger in diameter, the second opening 321 becomes larger, and when the outer friction ring 32 deforms in the radial direction and becomes smaller in diameter, the second opening 321 becomes smaller.

Continuing to refer to FIG. 3 , each axial end of the outer friction ring 32 is provided with a plurality of convex teeth 322 . The plurality of convex teeth 322 are provided at equal pitches in the circumferential direction of the outer friction ring 32 . As can be seen from FIG. 3 , in the preferred embodiment of the present invention, the convex tooth 322 is a bar-shaped convex structure, and the extending line of each convex tooth 322 intersects the axis of the outer friction ring 32 .

As shown in FIGS. 3 and 6, the outer friction ring 32 can centrally lock the inner friction ring 31 via convex teeth 322 on both sides of the outer friction ring 32, and the inner friction ring can 31 is prevented from swinging in the axial direction. Specifically, the length of each convex tooth 322 is typically equal to or approximately equal to the sum of the radial widths of the inner friction ring 31 and the outer friction ring 32 . Alternatively, those skilled in the art can make the inner diameter of the ring-like structure of the plurality of convex teeth 322 slightly smaller than the inner diameter of the inner friction ring 31, if desired. That is, the inner end of each convex tooth 322 is closer to the axis of the inner friction ring 31 than the inner end of the inner friction ring 31 .

Furthermore, in a preferred embodiment of the present invention, the inner friction ring 31 and the outer friction ring 32 are manufactured using a resilient material. By way of example, this material is porous polyurethane or elastic rubber. If necessary, a person skilled in the art may manufacture the inner friction ring 31 from metal and, for example, use a C-shaped metal spring seat as the inner friction ring 31 . Furthermore, those skilled in the art may also manufacture the outer friction ring 32 from metal if desired, for example, the outer friction ring 32 may be a C-shaped metal spring seat.

It should be noted that, in the preferred embodiment of the present invention, the convex teeth 322 can serve as a muffler and noise reducer. Specifically, in the process in which the damping ring 3 moves within the diameter-variable groove 21 , the convex teeth 322 come into contact with the outer friction ring 32 before the inner friction ring 31 , and collide with the side walls of the diameter-variable groove 21 . do. The side walls include side walls at both ends of the diameter-changing groove 21 and side walls of each ring-shaped groove (D1, D2, D3, D4, D5) in the diameter-changing groove 21 . Since the convex teeth 322 are more likely to be deformed than the inner friction ring 31 and the outer friction ring 32, the collision energy between the convex teeth 322 and the side wall can be quickly absorbed, thereby reducing noise. can be reduced and noise generation can be avoided.

Hereinafter, with reference to FIGS. 6 to 11, the principle of operation of the variable attenuation damper of the present invention will be described in detail in combination with the drum washing machine.

First of all, the drum washing machine of the present invention includes a casing, an outer cylinder, an inner cylinder, a tension spring, and a variable attenuation damper. Here, the top of the barrel is connected to the top of the casing by a tension spring, and the bottom of the barrel is connected to the bottom of the casing by a variable damping damper. The inner cylinder is rotatably installed on the outer cylinder. Other structural features of the drum washing machine are well known to those skilled in the art and will not be further described here.

As shown in FIG. 6, in the normal state and when the oscillation frequency of the outer cylinder is high, the amplitude of oscillation of the outer cylinder becomes small, and the damping ring 3 reciprocates between D1 and D1. As the vibration frequency of the outer cylinder decreases, the vibration amplitude of the outer cylinder gradually increases, and the damping ring 3 gradually shifts from reciprocating movement between D1-D1 to reciprocating movement between D2-D2, and Reciprocating movement gradually transitions to reciprocating movement between D3-D3, reciprocating movement between D3-D3 gradually transitions to reciprocating movement between D4-D4, reciprocating movement between D4-D4 to reciprocating movement between D5-D5 Gradually transition to reciprocating movement.

6 and 7, the outer friction ring 32 of the damping ring 3 abuts against the inner wall of the sleeve 1 and the inner friction ring 31 of the damping ring 3 separates from the outer wall of D1 when moving in the ring-shaped groove D1. be done. No damping force occurs when the sleeve 1 and plunger 2 slide relative to each other. The sleeve 1 and plunger 2 are freely slidable relative to each other. Since the damping force between sleeve 1 and plunger 2 is close to zero, it is denoted F1.

As shown in FIGS. 6 and 8, when moving in the ring-shaped groove D2, the outer friction ring 32 of the damping ring 3 abuts against the inner wall of the sleeve 1 and the inner friction ring 31 of the damping ring 3 contacts the inner wall of D2. Contact, but no pressure. A damping force generated when the sleeve 1 and the plunger 2 slide relative to each other is denoted by F2.

As shown in FIGS. 6 and 9, when moving in the ring-shaped groove D3, the outer friction ring 32 of the damping ring 3 abuts against the inner wall of the sleeve 1 and the inner friction ring 31 of the damping ring 3 contacts the inner wall of D3. Contact. Since the plunger 2 begins to press the inner friction ring 31 in the radial direction, the inner friction ring 31 is deformed in the radial direction and the first opening 311 begins to enlarge. The inner friction ring 31 with its increased diameter begins to press the outer friction ring 32 radially, thereby pressing the outer friction ring 32 against the inner wall of the sleeve 1 . At this time, the damping force generated when the sleeve 1 and the plunger 2 slide relative to each other is denoted as F3.

As shown in FIGS. 6 and 10, when moving in the ring-shaped groove D4, the outer friction ring 32 of the damping ring 3 abuts against the inner wall of the sleeve 1 and the inner friction ring 31 of the damping ring 3 contacts the inner wall of D4. Contact. The plunger 2 further presses the inner friction ring 31 radially outward, increasing the amount of deformation of the inner friction ring 31 and further increasing the degree of opening of the first opening 311 . In addition, the inner friction ring 31 is further pressed against the outer friction ring 32 to increase the pressure of the outer friction ring 32 against the sleeve 1 . At this time, the damping force generated when the sleeve 1 and the plunger 2 slide relative to each other is denoted as F4.

As shown in FIGS. 6 and 11, when moving in the ring-shaped groove D5, the outer friction ring 32 of the damping ring 3 abuts against the inner wall of the sleeve 1 and the inner friction ring 31 of the damping ring 3 contacts the inner wall of D5. Contact. The plunger 2 further pushes the inner friction ring 31 radially outward to increase the amount of deformation of the inner friction ring 31 again and increase the degree of opening of the first opening 311 again. In addition, the inner friction ring 31 is further pressed against the outer friction ring 32 to increase the pressure of the outer friction ring 32 against the sleeve 1 again. At this time, the damping force generated when the sleeve 1 and the plunger 2 slide relative to each other is denoted by F5.

As those skilled in the art will appreciate, the procedure for sliding the damping ring 3 from the ring-shaped groove D5 to the ring-shaped groove D1 is the reverse of the above-described procedure and will not be further described here.

As will be appreciated by those skilled in the art, the damping ring 3 has a pressure exerted on the sleeve 1 at D1, D2, D3, D4 and D5 due to the successively increasing diameters of D1, D2, D3, D4 and D5. Since it increases in order, F1<F2<F3<F4<F5.

As those skilled in the art will appreciate, since D1, D2, D3, D4 and D5 all have a constant length, the damping force generated by the damping ring 3 at D1, D2, D3, D4 and D5 is constant. Such a structure makes it easy for the designer to calculate the magnitudes of F1, F2, F3, F4, F5, and the designer determines D1, D2, D3, D4, D5 as needed, A damping variable damper adapts to various vibration frequencies and amplitudes of the outer cylinder of the drum washing machine.

As described above, as can be understood by those skilled in the art, the present invention provides the inner friction ring 31 with the first opening 311 and the outer friction ring 32 with the second opening 321 . changes the pressure of the outer friction ring 32 against the sleeve 1 by pushing the outer friction ring 32 inward according to the change in the diameter of the variable diameter groove 21, thereby causing the damper to change its stroke. A function to change the attenuation is realized separately. In addition, the damping ring 3 of the present invention can avoid irreversible deformation of the thickness during long-term use of the damping ring 3, as opposed to the conventional friction member without openings. guarantee the sex.

In other possible embodiments of the present invention, unlike the preferred embodiment described above, the variable diameter groove 21 may be provided in an arcuate variable diameter groove according to the needs of those skilled in the art. That is, the edge of the cross section along the axial direction of the variable diameter groove 21 is set in an arc shape.

In a further possible embodiment of the invention, unlike the preferred embodiment described above, the person skilled in the art can optionally provide a variable diameter groove 21 in the sleeve 1 to keep the inner friction ring 31 and the outer wall of the plunger 2 in constant contact. You may contact.

In a further possible embodiment of the invention, unlike the preferred embodiment described above, a person skilled in the art may provide the variable diameter grooves 21 in ring-shaped grooves of equal diameter as required.

In a further possible embodiment of the invention, in contrast to the preferred embodiment described above, the person skilled in the art can, if desired, configure the outer friction ring 32 with a plurality of friction seats distributed equidistantly in the circumferential direction of the damping ring 3. Between two adjacent friction sheets may be provided so as to be independent of each other. The plurality of friction sheets are fixed by fitting into the outer end of the inner friction ring 31, respectively, or any other possible connection method such as screw connection, welding, engagement, etc., as required by those skilled in the art. A plurality of friction sheets and the inner friction ring 31 may be fixed with . Further, each friction sheet is provided with one convex tooth 322 on each end. As will be appreciated by those skilled in the art, the friction sheets can be made of any possible material, such as elastic rubber, metal, porous polyurethane, and the like.

In a further possible embodiment of the invention, unlike the preferred embodiment described above, the person skilled in the art may make the damping ring 3 integral and provide it with openings, if desired. That is, the inner friction ring 31 and the outer friction ring 32 are integrated, and the first opening 311 and the second opening 321 are integrated. At this time, the side ends of the inner friction ring 31 and the outer friction ring 32 are formed with the convex teeth 32a.

that in a further possible embodiment of the invention, unlike the preferred embodiment described above, the person skilled in the art can optionally provide the first opening 311 in the inner friction ring 31 so as not to form an open ring; and/or the second opening 321 can be provided in the outer friction ring 32 so as not to form an open ring.

Although not shown, the present invention includes a laundry processing apparatus including at least one of a drum washing machine, a drum drying machine, an integrated drum washing/drying machine, a pulsator washing machine, a pulsator drying machine, and an integrated pulsator washing/drying machine. offer. The clothes processing apparatus also includes the variable attenuation damper described above. Next, a drum washing machine will be described as an example.

As an example, a drum washing machine includes a casing, an outer cylinder, an inner cylinder, a tension spring, and a damping variable damper. Here, the top of the barrel is connected to the top of the casing by a tension spring, and the bottom of the barrel is connected to the bottom of the casing by a variable damping damper. The inner cylinder is rotatably installed on the outer cylinder. Other structural features of the drum washing machine are well known to those skilled in the art and will not be further described here.

Although the technical solutions of the present invention have been described above through the preferred embodiments shown in the drawings, it is obvious for those skilled in the art that the protection scope of the present invention is not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can equivalently change or replace the relevant technical features, and the technical solutions after these changes or replacements shall fall within the protection scope of the present invention. It is included.

1, sleeve 2, plunger 21, variable diameter groove 3, damping ring 31, inner friction ring 311, first opening 32, outer friction ring 321, second opening 322, convex teeth

Claims (8)

A damping variable damper, said damping variable damper comprising a sleeve, a plunger and a damping ring,
a ring-shaped diameter-varying groove is formed in the plunger, the plunger is slidably inserted into the sleeve along the axial direction, and the diameter-varying groove is always positioned in the sleeve;
the damping ring is fitted in the variable diameter groove, the outer end of the damping ring abutting the inner wall of the sleeve;
the damping ring is radially deformable such that the diameter of the inner end of the damping ring matches the diameter of the variable diameter groove ;
The variable diameter groove is a stepped ring-shaped groove extending in the axial direction of the plunger, and the damping ring can reciprocate along the axial direction in the ring-shaped groove,
an opening provided in the damping ring, the damping ring radially increasing as the opening increases and radially decreasing as the opening decreases;
the damping ring includes an inner friction ring slidably connected to the plunger and an outer friction ring slidably connected to the sleeve;
the opening includes a first opening formed in the inner friction ring, the first opening causing the inner friction ring to be formed as an open ring;
A variable attenuation damper , wherein the outer friction ring is fitted outside the inner friction ring . 2. The damping variable damper according to claim 1 , wherein the outer friction ring is an integrally formed ring-shaped structure. 3. The damping variable damper of claim 2 , wherein the opening further comprises a second opening formed in the outer friction ring, the second opening causing the outer friction ring to be formed as an open ring. 2. The attenuation variable damper according to claim 1 , wherein the outer friction ring includes a plurality of friction sheets arranged at regular intervals in the circumferential direction of the inner friction ring. Two axial side ends of the outer friction ring are respectively provided with a plurality of convex structures , and each convex structure is equal to the sum of the radial widths of the inner friction ring and the outer friction ring. 2. A variable damper according to claim 1 , having a length approximately equal to . the damping ring is manufactured using an elastic material ;
and/or the diameter of the variable diameter groove gradually increases from the center to both sides;
And/or, the variable diameter damper according to any one of claims 1 to 5 , characterized in that the variable diameter grooves are provided symmetrically along the radial direction. A clothes processing apparatus comprising the attenuation variable damper according to any one of claims 1 to 6 . 8. The clothes processing apparatus according to claim 7 , wherein the clothes processing apparatus includes at least one of a washing machine, a dryer, and an integrated washing and drying machine.

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