Variable damping shock absorber and clothes treatment equipment
阅读说明:本技术 变阻尼减震器和衣物处理设备 (Variable damping shock absorber and clothes treatment equipment ) 是由 赵志强 许升 吕佩师 于 2019-03-06 设计创作,主要内容包括:本发明属于阻尼减震装置的领域,具体提供一种变阻尼减震器和衣物处理设备。本发明旨在解决现有的变阻尼减震器的阻尼件容易变形失效的问题。为此,本发明的变阻尼减震器包括套筒、柱塞和阻尼环。其中,柱塞上设置有环形的第一变径槽和储油槽,柱塞沿轴向可滑动地插入套筒中,使得第一变径槽始终位于套筒内。阻尼环套设在第一变径槽内,并且阻尼环的外侧端与套筒的内壁相抵。阻尼环上设置有开口,阻尼环通过改变开口的大小能够改变径向上的尺寸,进而能够匹配第一变径槽的直径。因此,本发明的阻尼环相对于现有技术中的阻尼环,有效地避免了阻尼环在沿径向被长久地挤压时,厚度上发生的不可逆转的形变,保证了减震器的可靠性。(The invention belongs to the field of damping shock absorbers, and particularly provides a variable damping shock absorber and clothes treatment equipment. The invention aims to solve the problem that a damping part of the existing variable damping shock absorber is easy to deform and lose efficacy. To this end, the variable damping shock absorber of the present invention includes a sleeve, a plunger, and a damping ring. The plunger is provided with a first annular reducing groove and an oil storage groove, and the plunger is inserted into the sleeve in an axially slidable mode, so that the first reducing groove is always located in the sleeve. The damping ring is sleeved in the first reducing groove, and the outer side end of the damping ring is abutted to the inner wall of the sleeve. The damping ring is provided with an opening, and the size of the opening can be changed to change the radial size of the damping ring, so that the diameter of the first reducing groove can be matched. Therefore, compared with the damping ring in the prior art, the damping ring effectively avoids the irreversible deformation on the thickness when the damping ring is extruded for a long time along the radial direction, and ensures the reliability of the shock absorber.)
1. A variable damping shock absorber is characterized by comprising a sleeve, a plunger and a damping ring;
the plunger is provided with an annular first reducing groove and oil storage grooves positioned on two sides of the first reducing groove, and the plunger is inserted into the sleeve in an axially slidable manner, so that the first reducing groove and the oil storage grooves are positioned in the sleeve all the time;
the damping ring is sleeved in the first reducing groove, and the outer side end of the damping ring is abutted against the inner wall of the sleeve;
the damping ring is arranged to be radially deformable so that a diameter of an inner end of the damping ring matches a diameter of the first reducing groove.
2. A variable damping shock absorber according to claim 1 wherein the damping ring is provided with openings, the damping ring being radially larger as the openings become larger and radially smaller as the openings become smaller.
3. The variable damping shock absorber of claim 2, wherein the damping ring comprises an inner friction ring and an outer friction ring which are fixedly connected or integrally formed, the inner friction ring is slidably connected with the plunger, and the outer friction ring is slidably connected with the sleeve;
the split includes a first split formed on the inner friction ring and a second split formed on the outer friction ring, the first split forming the inner friction ring into an open ring and the second split forming the outer friction ring into an open ring.
4. The variable damping shock absorber according to claim 3, wherein a plurality of first protrusion structures are radially provided at both ends of the inner friction ring, a plurality of second protrusion structures are axially provided at both ends of the outer friction ring, the first protrusion structures and the second protrusion structures are engaged with each other, and the second protrusion structures axially protrude from the first protrusion structures.
5. The variable damping shock absorber of claim 4 wherein the first plurality of raised structures and the second plurality of raised structures are each equally spaced around the circumference of the damping ring.
6. The variable damping shock absorber according to claim 4, wherein the first and second raised structures have the same width in the circumferential direction of the damping ring.
7. A variable damping shock absorber according to any one of claims 1 to 6 wherein an annular second reducing groove is provided on the inner wall of the sleeve, at least a portion of the second reducing groove being aligned with the first reducing groove and the outboard end of the damping ring always abutting the bottom of the second reducing groove.
8. The variable damping shock absorber of claim 7 wherein the damping ring is made of an elastomeric material;
and/or the diameter of the first reducing groove is gradually increased from the middle to two sides along the axial direction;
and/or the diameter of the second reducing groove is gradually reduced from the middle to two sides along the axial direction;
and/or the first variable diameter groove and/or the second variable diameter groove are of a symmetrical structure.
9. A laundry treating apparatus, characterized in that the laundry treating apparatus comprises the variable damping shock absorber of any one of claims 1 to 8.
10. The laundry processing apparatus of claim 9, wherein the laundry processing apparatus includes at least one of a washing machine, a dryer, and a washer-dryer.
Technical Field
The invention belongs to the field of damping shock absorbers, and particularly provides a variable damping shock absorber and clothes treatment equipment.
Background
The existing drum washing machine mainly comprises a box body, an outer drum and an inner drum. Wherein, the outer cylinder is fixedly connected with the box body through a hanging spring and a shock absorber. Specifically, the top of the outer cylinder is fixedly connected with the top of the box body through a hanging spring, and the bottom of the outer cylinder is fixedly connected with the bottom of the box body through a shock absorber. The inner cylinder is rotatably disposed in the outer cylinder.
In the working process of the washing machine, because the clothes are unevenly distributed in the inner barrel, the inner barrel can drive the outer barrel to shake up and down, left and right when rotating. The shaking strength and amplitude of the outer cylinder can be reduced by arranging the hanging spring and the shock absorber. Especially, the vibration absorber can absorb and eliminate the vibration of the washing machine, prevent the washing machine from crawling, reduce the noise of the washing machine, further ensure the performance of the washing machine and prolong the service life of the washing machine.
However, the damping force generated by the prior art shock absorbers is generally a constant value and cannot be adapted to all operating conditions of the washing machine. When the washing machine carries out high-speed dehydration, the amplitude generated by the outer cylinder is small, and the required damping force is small; when the washing machine is used for washing, rinsing and low-speed dewatering, the amplitude generated by the outer cylinder is large, and the required damping force is also large.
To this end, patent publication No. CN1519418A discloses a shock absorber including a cylinder, a piston rod inserted into the cylinder, and a movable damping member fitted over the piston rod. Wherein, the piston rod is provided with an annular groove for installing the movable damping piece, and the diameter of the annular groove is gradually increased from the middle to two sides. When the movable damping piece is positioned in the middle of the annular groove, the damping force between the movable damping piece and the cylinder is small, and the damping force is used for eliminating vibration generated during high-speed dehydration of the washing machine; when the movable damping parts are positioned at the two sides of the annular groove, the damping force between the movable damping parts and the cylinder is larger, and the damping device is used for eliminating the vibration generated during washing, rinsing and low-speed dewatering of the washing machine.
However, in the damper disclosed in the patent publication No. CN1519418A, the movable damping members are easily deformed by the two ends of the annular groove during a long time use, and thus cannot be matched with the middle position of the annular groove, so that the damper loses the damping effect when the washing machine is dehydrated at a high speed, and the noise of the washing machine is increased.
Accordingly, there is a need in the art for a new variable damping shock absorber that solves the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the damping member of the existing variable damping shock absorber is easy to deform and fail, the invention provides a variable damping shock absorber, which comprises a sleeve, a plunger and a damping ring; the plunger is provided with an annular first reducing groove and oil storage grooves positioned on two sides of the first reducing groove, and the plunger is inserted into the sleeve in an axially slidable manner, so that the first reducing groove and the oil storage grooves are positioned in the sleeve all the time; the damping ring is sleeved in the first reducing groove, and the outer side end of the damping ring is abutted against the inner wall of the sleeve; the damping ring is arranged to be radially deformable so that a diameter of an inner end of the damping ring matches a diameter of the first reducing groove.
In a preferred embodiment of the variable damping shock absorber, the damping ring is provided with an opening, and the damping ring can be radially enlarged as the opening is enlarged and radially reduced as the opening is reduced.
In the above preferred technical solution of the variable damping shock absorber, the damping ring includes an inner friction ring and an outer friction ring which are fixedly connected or integrally formed, the inner friction ring is slidably connected to the plunger, and the outer friction ring is slidably connected to the sleeve; the split includes a first split formed on the inner friction ring and a second split formed on the outer friction ring, the first split forming the inner friction ring into an open ring and the second split forming the outer friction ring into an open ring.
In a preferred technical solution of the above variable damping shock absorber, a plurality of first protrusion structures are radially disposed at two ends of the inner friction ring, a plurality of second protrusion structures are axially disposed at two ends of the outer friction ring, the first protrusion structures and the second protrusion structures are engaged with each other, and the second protrusion structures axially extend out of the first protrusion structures.
In a preferred technical solution of the variable damping shock absorber, the plurality of first protrusion structures and the plurality of second protrusion structures are respectively distributed around the circumference of the damping ring at equal intervals.
In a preferred embodiment of the variable damping shock absorber, the first protrusion structure and the second protrusion structure have the same width along the circumferential direction of the damping ring.
In the preferable technical scheme of the variable damping shock absorber, an annular second reducing groove is formed in the inner wall of the sleeve, at least one part of the second reducing groove is aligned with the first reducing groove, and the outer end of the damping ring always abuts against the bottom of the second reducing groove.
In the preferable technical scheme of the variable damping shock absorber, the damping ring is made of elastic materials; and/or the diameter of the first reducing groove is gradually increased from the middle to two sides along the axial direction; and/or the diameter of the second reducing groove is gradually reduced from the middle to two sides along the axial direction; and/or the first variable diameter groove and/or the second variable diameter groove are of a symmetrical structure.
In addition, the invention also provides a clothes treatment device which comprises the variable damping shock absorber in any one of the preferable technical scheme.
In a preferred embodiment of the above laundry treating apparatus, the laundry treating apparatus includes at least one of a washing machine, a dryer, and a washing and drying machine.
It can be understood by those skilled in the art that in the preferred embodiment of the present invention, the diameter of the inner end of the damping ring can be changed according to the diameter change of the first reducing groove by providing the annular first reducing groove on the plunger and arranging the damping ring to be deformable in the radial direction. Therefore, the damping ring which can deform along the radial direction can adapt to the diameter change of the first reducing groove, and compared with the traditional damping ring which cannot deform along the radial direction, the damping ring effectively improves the reliability of the shock absorber and prolongs the service life.
As can be understood by those skilled in the art, when the damping ring is located at a position where the inner diameter of the first reducing groove is smaller, the pressure of the damping ring on the sleeve is smaller, and the damping force generated between the damping ring and the sleeve is also smaller; when the damping ring is located at a position with a larger inner diameter of the first reducing groove, the pressure of the damping ring on the sleeve is larger, and the damping force generated between the damping ring and the sleeve is also larger.
In addition, the oil storage grooves are formed in the two sides of the first reducing groove in the plunger, so that lubricating oil in the oil storage grooves can lubricate the damping ring in the moving process of the plunger, the abrasion of the damping ring is reduced, and the service life of the damping ring is prolonged.
Further, the damping ring is provided with an opening, and when the damping ring is enlarged along the radial direction, the opening is enlarged; the openings become smaller as the damping ring becomes smaller in the radial direction. In other words, the damping ring of the present invention can achieve deformation in the radial direction by changing the size of the opening therein. Therefore, compared with the damping ring in the prior art, the damping ring effectively avoids the irreversible deformation on the thickness when the damping ring is extruded for a long time along the radial direction, and ensures the reliability of the shock absorber.
Further preferably, the damping ring comprises an inner friction ring in sliding connection with the plunger and an outer friction ring in sliding connection with the sleeve, a plurality of first protruding structures are arranged at two ends of the inner friction ring along the radial direction, a plurality of second protruding structures are arranged at two ends of the outer friction ring along the axial direction, the first protruding structures and the second protruding structures are meshed together, and the second protruding structures axially extend out of the first protruding structures. When the damping ring slides to the terminal of first reducing groove can take place the contact through the lateral wall of second protruding structure with first reducing groove earlier, avoided the emergence of noise, optimized user's use and experienced. Wherein, the damping ring is made of elastic material so as to reduce the occurrence of noise.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of a variable damping shock absorber of the present invention in an assembled state;
FIG. 2 is a schematic structural view of the variable damping shock absorber of the present invention when it is not assembled;
FIG. 3 is an exploded view of the structure of the variable damping shock absorber of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 1;
FIG. 5 is a schematic structural view of the mount of the present invention;
FIG. 6 is a schematic structural view of a shock absorbing member of the present invention;
FIG. 7 is an enlarged view of portion B of FIG. 3;
FIG. 8 is a cross-sectional view of the variable damping shock absorber of the present invention;
FIG. 9 is an enlarged view of portion C of FIG. 8;
FIG. 10 is a schematic view of the damping ring of the present invention;
FIG. 11 is a schematic plan view of the outer friction ring of the present invention.
List of reference numerals:
1. a plunger; 11. a first mounting hole; 12. a first reducing groove; 13. a first oil reservoir; 14. a second oil reservoir;
2. a sleeve; 21. a second mounting hole; 22. a second reducing groove;
3. a damping ring; 31. an inner friction ring; 311. a first bump structure; 32. an outer friction ring; 321. a second bump structure;
4. a shock-absorbing member; 41. a body; 42. a first protrusion; 43. a second protrusion;
5. a mounting seat; 51. a base plate; 511. a bottom flanging hole; 52. a first side plate; 521. a first side flanging hole; 53. a second side plate; 531. a second side flanging hole; 54. positioning blocks;
6. a tubular member;
7. and (4) bolts.
Detailed Description
It should be understood by those skilled in the art that the embodiments of the present invention are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the embodiment of the present invention describes the variable damping shock absorber of the present invention by taking a drum washing machine as an example, the variable damping shock absorber of the present invention can be applied to any other feasible devices, such as automobiles, motorcycles, electric vehicles, bicycles, etc. Those skilled in the art can make modifications to the invention as needed to suit their particular application, and such modifications are intended to be within the scope of the invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 3, the variable damping shock absorber of the present invention mainly includes a
As shown in fig. 2 and 3, the variable damping shock absorber of the present invention further includes a shock-absorbing member 4, a
As shown in fig. 4 and 5, the
Further, in a preferred embodiment of the present invention, the thicknesses of the metal plates, that is, the thicknesses of the
With continued reference to fig. 4 and 5,
Although not explicitly shown in the drawings, in the preferred embodiment of the present invention, both the first
In another possible embodiment of the present invention, one skilled in the art may provide only one or two of the
With continued reference to fig. 4 and 5, the
As shown in fig. 6, the shock-absorbing member 4 of the present invention includes a cylindrical body 41 and a projection fixedly connected or integrally formed with the body 41, the projection being provided at an end portion in the axial direction of the body 41, and a thickness of the projection in the radial direction of the body 41 gradually increases from the end portion inward in the axial direction of the body 41. Specifically, the protrusions include a first protrusion 42 provided on a first end of the body 41 and a second protrusion 43 provided on a second end of the body 41, and the thickness of the first protrusion 42 gradually increases from the first end toward the second end such that the first protrusion 42 forms a trapezoidal protrusion; the thickness of the second projection 43 gradually increases from the second end toward the first end, so that the second projection 43 forms a trapezoidal projection.
With continued reference to fig. 6, the first projection 42 and the second projection 43 are each plural, and the plural first projections 42 and the plural second projections 43 are provided at equal intervals in the circumferential direction of the body 41. Alternatively, the plurality of first protrusions 42 and the plurality of second protrusions 43 may be arranged in a non-equidistant distribution as required by those skilled in the art.
Although not explicitly shown in the drawings, the shock-absorbing member 4 of the present invention is made of a rubber material having elasticity so as to improve the shock-absorbing performance of the shock-absorbing member 4, or one skilled in the art may use any feasible shock-absorbing material, such as plastic, foam, porous metal, etc., for the shock-absorbing member 4, as needed.
As shown in fig. 2 and 3, in the mounted state, the body 41 of the shock-absorbing member 4 on the
Further, in another possible embodiment of the present invention, a person skilled in the art may leave only the first projection 42 or the second projection 43 on the shock-absorbing member 4 and then provide a stopper member on the other end of the shock-absorbing member 4, as needed. When mounting, the shock-absorbing member 4 is inserted into the first mounting hole 11 or the second mounting hole 21 through the first protrusion 42 or the second protrusion 43, and the end of the first mounting hole 11 or the second mounting hole 21 is abutted by the stopper member, so that the shock-absorbing member 4 is prevented from being removed from the first mounting hole 11 or the second mounting hole 21. Wherein, the stopping component can be a circular ring, a plurality of rectangular convex structures, a plurality of hemispherical convex structures and the like.
As shown in fig. 3 and 7, the
As shown in fig. 8 and 9, the inner wall of the
Although not explicitly shown in the drawings, in a preferred embodiment of the present invention, the first and/or second variable diameter slits 12 and 22 are symmetrically disposed with respect to the respective radial directions, forming a symmetrical structure. The diameter of the first reducing groove 12 gradually increases from the middle to both sides in the axial direction of the first reducing groove 12, and the diameter of the second reducing groove 22 gradually decreases from the middle to both sides in the axial direction of the second reducing groove 22. Further, a person skilled in the art may provide only the first reducing groove 12 on the
As shown in fig. 9 and 10, the damping
As shown in fig. 2 and 10, both ends of the inner friction ring 31 are provided with a plurality of first protrusion structures 311 in the radial direction of the damping
Although not explicitly shown in the drawings, the damping
As shown in fig. 10, the plurality of first protrusion structures 311 and the plurality of
With continued reference to fig. 10, the inner friction ring 31 is formed with a first opening (not labeled) that is present such that the inner friction ring 31 forms an open ring. When the inner friction ring 31 is deformed in the radial direction and the diameter becomes large, the first opening becomes large; when the inner friction ring 31 is deformed in the radial direction and becomes smaller in diameter, the first opening becomes smaller. The
As shown in fig. 10 and 11, the
It will be appreciated by those skilled in the art that the present invention provides the damping
In conclusion, the variable damping shock absorber of the invention reduces the noise generated when the damping
Further, although not shown in the drawings, the present invention also provides a laundry treating apparatus including at least one of a drum washing machine, a drum dryer, a drum washer-dryer, a pulsator washing machine, a pulsator dryer, and a pulsator washer-dryer. The laundry treating apparatus further includes the variable damping shock absorber described above. The drum type washing machine will be described below as an example.
Illustratively, the drum type washing machine includes a cabinet, an outer tub, an inner tub, a tension spring, and a variable damping damper. The top of the outer cylinder is connected with the top of the box body through a tension spring, and the bottom of the outer cylinder is connected with the bottom of the box body through a variable damping shock absorber. The inner cylinder is rotatably disposed in the outer cylinder. Since other structural features of the drum type washing machine are well known to those skilled in the art, they will not be described herein in detail.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
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