CN112391798A - Vibration damper and washing machine with same - Google Patents
Vibration damper and washing machine with same Download PDFInfo
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- CN112391798A CN112391798A CN201910757394.8A CN201910757394A CN112391798A CN 112391798 A CN112391798 A CN 112391798A CN 201910757394 A CN201910757394 A CN 201910757394A CN 112391798 A CN112391798 A CN 112391798A
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- limiting
- plunger structure
- limiting member
- peripheral wall
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- 238000005406 washing Methods 0.000 title claims abstract description 41
- 238000013016 damping Methods 0.000 claims abstract description 79
- 230000002093 peripheral effect Effects 0.000 claims description 42
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 101150114468 TUB1 gene Proteins 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
- D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a vibration damper and a washing machine with the same, wherein the vibration damper comprises a shell and a plunger structure, a chamber with an opening at one end is arranged in the shell, one end of the plunger structure is inserted into the chamber from the opening and can slide along the shell in a friction manner, and one-way limiting structures for limiting the plunger structure to be separated from the chamber are arranged in the chamber and the plunger structure. The unidirectional limiting structure arranged in the vibration damper avoids the risk that the plunger structure is separated from the shell while the plunger structure does not slide up and down in the shell, and can still play a role in fixing and damping the outer barrel of the washing machine under the extreme conditions that the washing machine is placed upside down and the like, thereby ensuring the safety of the washing machine.
Description
Technical Field
The invention belongs to the field of clothes treatment devices, and particularly relates to a vibration damper and a washing machine with the same.
Background
The washing machine is a washing device for washing clothes by using electric energy, and along with the acceleration of life rhythm and the pursuit of people for life comfort, the washing machine becomes an indispensable household appliance in daily life of people. However, the washing machine generates large vibration and noise during washing, rinsing and dehydrating processes, resulting in bad experience for consumers.
In order to solve the problems of vibration and overlarge noise of the washing machine in the operation process, the conventional pulsator washing machine generally adopts four suspension rods to fix and damp the outer barrel, but the effect of suspending, fixing and damping the outer barrel by only adopting the four suspension rods is not ideal, the outer barrel is easy to collide with a box body, the whole machine displacement is caused, and the user experience is not good.
In addition, when the washing machine is abnormally operated during transportation or transportation, for example, the washing machine is laid down or the washing machine is laid down, the damping hanger rod cannot play a damping role, and the inner tub and the outer tub of the washing machine are easy to shake to cause accidents. When other vibration dampers or dampers are arranged on the washing machine, the vibration dampers are easy to separate from each other when improper operation occurs, and the vibration damping effect cannot be achieved.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a vibration damper and a washing machine with the same. The unidirectional limiting structure arranged in the vibration damper avoids the risk that the plunger structure is separated from the shell while the plunger structure does not slide up and down in the shell.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides a vibration damping device, which comprises a shell and a plunger structure, wherein a cavity with an opening at one end is formed in the shell, one end of the plunger structure is inserted into the cavity from the opening and can slide along the shell in a friction mode, and one-way limiting structures for limiting the plunger structure to be separated from the cavity are arranged in the cavity and on the plunger structure.
In a further aspect, the one-way limiting structure is disposed on an inner peripheral wall of the chamber surrounding the central shaft and an outer peripheral wall of the plunger structure.
In a further scheme, the one-way limiting structure comprises a first limiting piece and a second limiting piece which can be abutted against each other for limiting, the first limiting piece is arranged on the inner peripheral wall of the cavity, and the second limiting piece is arranged on the outer peripheral wall of the plunger structure;
preferably, the first limiting member protrudes toward the center relative to the inner peripheral wall of the cavity, the second limiting member protrudes toward the direction away from the center relative to the outer peripheral wall of the plunger structure, and opposite side portions of the first limiting member and the second limiting member can abut against each other for limiting.
In a further aspect, the first retaining member is disposed proximate to the opening of the cavity; the second limiting piece is arranged close to the free end of the plunger structure extending into the cavity;
preferably, the first limiting member and the second limiting member each include at least two members, and are symmetrically disposed around a central axis of the housing or the plunger structure, respectively.
In a further scheme, an annular damping structure is arranged on the inner peripheral wall of the cavity, the outer peripheral wall of the plunger piston structure is in frictional contact with the damping structure, and the first limiting piece is positioned on one side, far away from the opening, of the damping structure;
preferably, the damping structure is provided on an inner peripheral wall of the chamber adjacent to the opening.
In a further scheme, a first mounting groove is formed in the inner peripheral wall of the cavity along the radial direction of the shell, and the first limiting piece is mounted in the first mounting groove; a second mounting groove is formed in the outer peripheral wall of the plunger structure along the radial direction of the plunger structure, and the second limiting piece is mounted in the second mounting groove;
preferably, the thickness of a partial peripheral wall of the chamber is increased, and the first mounting groove is arranged at the position where the thickness of the peripheral wall is increased;
preferably, the chamber has an annular enlarged portion with an increased thickness of a peripheral wall thereof near the opening, and the first mounting groove is provided in the annular enlarged portion at an end of the annular enlarged portion near the opening.
In a further aspect, the first limiting member and/or the second limiting member includes an elastic portion, or an elastic member is disposed in the first mounting groove and/or the second mounting groove;
preferably, a first elastic element is arranged between the bottom of the first mounting groove and the first limiting element, and/or a second elastic element is arranged between the bottom of the second mounting groove and the second limiting element;
preferably, the first elastic member and/or the second elastic member is made of an elastic material.
In a further scheme, the first limiting part and the second limiting part are both limiting parts, and the protruding length of the end part protruding from the first limiting part, which is close to the opening, is smaller than the protruding length of the end part protruding from the opening, so that a first inclined plane facing the opening is formed; the protruding length of the end part of the second limiting part, which is close to one side of the end part of the plunger structure, is smaller than the protruding length of the end part of the plunger structure, which is far away from one side of the end part of the plunger structure, so that a second inclined plane facing the end part of the plunger structure is formed.
In a further scheme, a first plane is formed on one side, away from the opening, of the end part protruding from the first limiting piece, a second plane is formed on one side, away from the end part of the plunger structure, of the end part protruding from the second limiting piece, and the first plane can abut against the second plane.
The second purpose of the invention is to provide a washing machine with the vibration damping device as described in any one or combination of the above schemes, comprising a box body and an outer barrel, wherein two ends of the vibration damping device are respectively connected with the box body and the outer barrel;
preferably, the box body comprises a base, one end of the vibration damper is connected with the lower part of the outer barrel, and the other end of the vibration damper is connected with the base;
preferably, the base is fixedly provided with a supporting seat, the end part of the vibration damper is connected with the supporting seat, and the supporting seat is further provided with a vibration damping pad.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the unidirectional limiting structure arranged in the vibration damper avoids the risk that the plunger structure is separated from the shell while the plunger structure does not slide up and down in the shell.
2. The vibration damper is arranged between the lower part of the outer barrel and the bottom of the box body of the washing machine, can support the outer barrel, reduces the pressure of the suspender, can better fix and damp the outer barrel by matching with the suspender, reduces the noise and vibration generated by the outer barrel, and improves the user experience. Under the extreme conditions that the washing machine is placed upside down and the like, the outer barrel of the washing machine can still be fixed and damped, and the safety of the washing machine is ensured.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of the construction of the vibration damping device of the present invention;
FIG. 2 is a schematic cross-sectional view of the vibration damping device of the present invention;
FIG. 3 is a schematic sectional view of a portion of the vibration damping device of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 of the present invention;
FIG. 5 is a schematic structural view of an outer tub having a vibration damper according to the present invention;
FIG. 6 is a schematic view showing the structure of a vibration damper mounted on an outer tub according to the present invention;
in the figure: the damping device comprises an outer barrel 1, a damping device 2, a shell 3, a plunger 4, a chamber 5, an opening 6, a one-way limiting structure 7, a first limiting part 8, a second limiting part 9, a damping structure 10, a first mounting groove 11, a second mounting groove 12, an annular expansion part 13, an elastic part 14, a first inclined plane 15, a second inclined plane 16, a first plane 17, a second plane 18, a first connecting part 19, a second connecting part 20, a supporting seat 21, a screw 22, a damping pad 23, a positioning pin 24 and a suspender 25.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-6, the present invention provides a vibration damping device 2, which includes a housing 3 and a plunger structure 4, wherein the housing 3 has a chamber 5 with an opening 6 at one end, the plunger structure 4 is inserted into the chamber 5 through the opening 6 and can slide along the housing 3 by friction, and a one-way limiting structure 7 for limiting the plunger structure 4 to be removed from the chamber 5 is disposed in the chamber 5 and on the plunger structure 4.
In this embodiment, the housing 3 of the vibration damping device 2 is cylindrical, and has a chamber 5 therein, and one end of the chamber 5 is open 6. The plunger structure 4 can be a cylindrical piston rod, and the plunger structure 4 and/or the inside of the shell 3 is/are provided with an annular damping structure 10, so that the plunger structure 4 generates damping to achieve a damping effect when sliding along the shell 3 in the cavity 5.
The unidirectional limiting structure arranged in the vibration damper 2 has no influence on the sliding of the plunger structure 4 to the cavity 5, and can limit the plunger structure 4 when the plunger structure 4 slides to a certain position towards the opening 6 of the cavity 5, so that the risk that the plunger structure 4 is separated from the shell 3 is avoided; meanwhile, the one-way limiting structure 7 cannot influence the linear sliding of the plunger structure 4 in the shell 3 within a certain range, and the vibration buffering effect of the vibration damping device 2 is ensured.
The housing 3 and the plunger structure 4 of the damping device 2 according to the invention can be made of materials commonly used by those skilled in the art. For example, in order to increase the strength of the vibration damping device 2, both are made of metal, for example, the plunger structure 4 is a steel cylindrical structure, and the housing 3 is a steel cylindrical structure.
In a further aspect, the one-way stopper structure 7 is disposed on the inner circumferential wall of the chamber 5 around the central axis and on the outer circumferential wall of the plunger structure 4. Thus, the one-way limiting structure 7 is disposed on the peripheral wall where the housing 3 and the plunger structure 4 relatively move and contact, and plays a role of one-way limiting for the linear movement of the plunger structure 4 in the central axis direction.
Specifically, the one-way limiting structure 7 includes a first limiting member 8 and a second limiting member 9 that can abut against each other for limiting, the first limiting member 8 is disposed on the inner peripheral wall of the cavity 5, and the second limiting member 9 is disposed on the outer peripheral wall of the plunger structure 4.
Preferably, the first retaining member 8 protrudes toward the center relative to the inner peripheral wall of the chamber 5, the second retaining member 9 protrudes toward the direction away from the center relative to the outer peripheral wall of the plunger structure 4, and the opposite side portions of the first retaining member 8 and the second retaining member 9 can abut against each other for retaining.
The first limiting part 8 and the second limiting part 9 are respectively arranged on the inner peripheral wall of the cavity 5 and the outer peripheral wall of the plunger structure 4, and the first limiting part 8 and the second limiting part 9 are matched with each other to limit the plunger structure 4. The first limiting member 8 and the second limiting member 9 may be disposed in various manners, for example, the first limiting member 8 and the second limiting member 9 may be mutually matched bumps or claws, or other protruding structures including spherical structures, and the two limiting members abut against each other to achieve limiting. The first stopper 8 and the second stopper 9 may be members having the same structure or members having different structures. The first limiting member 8 and the second limiting member 9 are matched with each other to enable the plunger structure 4 to be inserted into the cavity 5 of the housing 3, and the plunger structure 4 is limited not to be separated from the cavity 5, and may be any existing structure or component capable of achieving the function.
In order to ensure that the plunger structure 4 has a sufficient sliding path in the chamber 5 of the housing 3, and a good damping effect is achieved, the first limiting member 8 is disposed close to the opening 6 of the chamber 5; the second stop element 9 is arranged close to the free end of the plunger structure 4 that protrudes into the chamber 5. So, plunger structure 4 can set up the reciprocal slip of the within range between the position of first locating part 8 to the closed one end of cavity 5 in cavity 5 along casing 3, plays the effect of buffering vibration, and when the tip that plunger structure 4 inserted in cavity 5 was close to cavity 5 opening 6, second locating part 9 leaned on with first locating part 8, and restriction plunger structure 4 continues outwards to slide, avoids plunger structure 4 to deviate from in the casing 3.
Preferably, the second stopper 9 is disposed on the outer peripheral edge of the end portion of the free end of the plunger structure 4, so that the plunger structure 4 has a sufficient sliding path in the chamber 5 of the housing 3, thereby ensuring the damping effect.
In order to facilitate installation of the annular damping structure 10 and arrangement of the first limiting member 8 on the circumferential wall inside the chamber 5, and ensure that the plunger structure 4 generates damping with the housing 3 at any time, the annular damping structure 10 is fixedly arranged on the inner circumferential wall of the chamber 5. The damping structure 10 may be an existing damping ring or other structure capable of providing a damping effect. The peripheral wall of the plunger structure 4 is in friction contact with the damping structure 10, and the first limiting member 8 is located on one side of the damping structure 10 away from the opening 6. That is to say, the distance from the first limiting part 8 to the opening 6 is greater than the distance from the annular damping structure 10 to the opening 6, so that the plunger structure 4 can be ensured to slide outwards to the position of the first limiting part 8, the first limiting part 8 and the second limiting part 9 are mutually abutted to realize limiting, and meanwhile, damping friction can be generated between the plunger structure 4 and the shell 3 all the time, and the vibration damping effect is ensured.
As a preferable mode, in order to ensure the sliding space of the plunger structure 4, ensure the damping effect, and prevent the plunger structure 4 from coming off, the damping structure 10 is disposed on the inner peripheral wall of the chamber 5 near the opening 6, and the first limiting member 8 is located on the side of the damping structure 10 far from the opening 6. Therefore, the plunger structure 4 can slide in a reciprocating manner in the space within the first limiting part 8, and can be in frictional contact with the damping ring in the cavity 5 all the time, so that the vibration damping effect is ensured.
The first limiting member 8 and the second limiting member 9 each include at least two, and may be three or more. The first stoppers 8 are symmetrically disposed around the central axis of the housing 3, and the second stoppers 9 are symmetrically disposed around the central axis of the plunger structure 4. Meanwhile, the positions of the first limiting part 8 and the second limiting part 9 along the central axis direction are correspondingly arranged, so that when the plunger structure 4 slides to a certain position along the shell 3, the first limiting part 8 and the second limiting part 9 are abutted to realize limiting.
In order to mount the first limiting piece 8 and the second limiting piece 9, a first mounting groove 11 is formed in the inner circumferential wall of the cavity 5 along the radial direction of the housing 3, one end of the first limiting piece 8 is mounted in the first mounting groove 11, and the other end of the first limiting piece protrudes towards the central axis direction; a second mounting groove 12 is formed in the outer peripheral wall of the plunger structure 4 along the radial direction of the plunger structure 4; one end of the second limiting part 9 is installed in the second installation groove 12, and the other end protrudes in a direction away from the center of the plunger structure 4.
The thickness of the partial peripheral wall of the chamber 5 is increased, and the first mounting groove 11 is provided at a position where the thickness of the peripheral wall is increased. In this scheme, because casing 3 is the tube-shape, the thickness of the wall of casing 3 can set up as required, does not need too thick under the general condition, also is favorable to saving the cost. However, in order to facilitate the installation of the first limiting member 8 and the second limiting member 9, the first installation groove 11 needs a certain wall thickness, so as to firmly install the first limiting member 8, and at the same time, the cost is saved.
Preferably, the chamber 5 has an annular enlarged part 13 with an increased thickness of the peripheral wall near the opening 6, and the first mounting groove 11 is disposed in the annular enlarged part 13 at one end of the annular enlarged part 13 near the opening 6. An annular damping structure 10 is provided at the annular enlarged portion 13 near the opening 6. Thus, the first mounting groove 11 with a certain depth is advantageously arranged, so that the first limiting member 8 can be firmly mounted.
The first mounting groove 11 is disposed along a radial direction of the housing 3, the second mounting groove 12 is disposed along a radial direction of the plunger structure 4, and the first limiting member 8 and/or the second limiting member 9 are/is extendable in the radial direction. At least one of the two stop members may be radially extendable and retractable, or both may be radially extendable and retractable, to facilitate insertion of the plunger structure 4 into the chamber 5.
When the plunger structure 4 is inserted into the cavity 5 through the opening 6, the second limiting member 9 presses the first limiting member 8, the first limiting member 8 and/or the second limiting member 9 contract so that the plunger structure 4 enters the cavity 5, then the first limiting member 8 and/or the second limiting member 9 reset, and when the plunger structure 4 slides towards the opening 6, the first limiting member 8 and the second limiting member 9 abut against each other to limit the position of the plunger structure 4.
In order to achieve the expansion and contraction of the first limiting member 8 and/or the second limiting member 9 in the radial direction, the first limiting member 8 and/or the second limiting member 9 may include an elastic portion, or an elastic member 14 may be disposed in the first mounting groove 11 and/or the second mounting groove 12.
Preferably, an elastic member 14 is disposed between the bottom of the first mounting groove 11 and the first limiting member 8, and/or an elastic member 14 is disposed between the bottom of the second mounting groove 12 and the second limiting member 9. The first elastic member 14 and/or the second elastic member 14 may be made of an elastic material, such as an elastic glue or the like.
Specifically, the first limiting member 8 and the second limiting member 9 are both limiting members, and the protruding length of the protruding end portion of the first limiting member 8, which is close to the opening 6, is smaller than the protruding length of the protruding end portion of the first limiting member, which is far from the opening 6, so as to form a first inclined slope 15 facing the opening 6; the protruding length of the end part of the second limiting part 9, which is close to the end part of the plunger structure 4, is smaller than the protruding length of the end part of the second limiting part, which is far away from the end part of the plunger structure 4, so that a second inclined plane 16 facing the end part of the plunger structure 4 is formed. The side of the end part of the first limiting part 8 protruding away from the opening 6 forms a first plane 17, the side of the end part of the second limiting part 9 protruding away from the end part of the plunger structure 4 forms a second plane 18, and the first plane 17 can abut against the second plane 18.
The bottom of the first limiting member 8 and the second limiting member 9 are provided with an elastic member 14, when the plunger structure 4 is inserted into the housing 3 from the inlet, the first inclined surface 15 of the first limiting member 8 and the second inclined surface 16 of the second limiting member 9 contact to form an axial force, and the elastic member 14 is pressed to compress and deform the elastic member 14, so that the first limiting member 8 and the second limiting member 9 contract and do not play a role in positioning. At this point, the plunger structure 4 can be smoothly installed in place. When the plunger structure 4 is separated from the housing 3, the first plane 17 of the first limiting member 8 and the second plane 18 of the second limiting member 9 form plane contact abutment, so that no axial force is generated, and the first limiting member 8 and the second limiting member 9 play a role in positioning; the plunger structure 4 is prevented from being removed from the housing 3.
The housing 3 is provided with a first connecting portion 19 at the end opposite to the opening 6, and the plunger structure 4 is provided with a second connecting portion 20 at the end opposite to the end inserted into the chamber 5, so as to facilitate the installation and use of the vibration damping device 2.
In addition, the invention also provides a washing machine with the vibration damper 2 according to any one or combination of the above schemes, wherein the washing machine can be a pulsator washing machine or a drum washing machine.
The washing machine comprises a box body and an outer barrel 1, wherein the lower part of the outer barrel 1 is suspended and fixed with the upper part of the box body through four suspension rods 25. The damper 2 is provided at the lower part of the tub 1. In order to achieve a good damping effect, the lower portion of the outer tub 1 is provided with four damping devices 2, and the four damping devices 2 surround the outer circumference of the outer tub 1 and are symmetrically distributed with the central axis as the center. The box body comprises a base, a supporting seat 21 is fixedly arranged on the base, one end of the vibration damper 2 is connected with the lower part of the outer barrel 1, and the other end of the vibration damper is connected with the supporting seat 21.
The front end of the shell 3 of the vibration damper 2 is provided with a steel sleeve (namely a first connecting part 19), and the shell 3 is fixed on the outer barrel 1 through a screw 22 and a screw 22 hole on the steel sleeve and a bracket on the outer barrel 1; the lower part of the plunger structure 4 of the damping device 2 is also provided with a steel sleeve (namely, a second connecting part 20), and the plunger structure 4 is fastened on the supporting seat 21 through a screw 22 and a screw 22 hole on the steel sleeve; the bottom of the supporting seat 21 is provided with a screw 22 hole and a positioning pin 24, and the combination of the screw 22 hole and the positioning pin can well stabilize the supporting seat 21 on the base.
The working principle and the advantages of the vibration damper 2 of the novel washing machine outer barrel 1 provided by the invention are as follows: the damping ring is arranged in the shell 3, when the plunger structure 4 moves relative to the shell 3, damping force can be generated, and the damping force is most directly expressed in fixing and damping the outer barrel 1; because the plunger structure 4 and the steel sleeve on the shell 3 can rotate relative to the screw 22 fastened by the plunger structure 4 and the plunger structure 4 can also do linear motion relative to the shell 3, the novel vibration absorber for the outer barrel 1 of the washing machine can be ensured to have a plurality of degrees of freedom for fixing and damping the outer barrel 1 by using the assembly mode, and the vibration damping and fixing effects are particularly obvious.
To prevent the occurrence of extreme situations, the extreme situations are those in which an improper operation such as: the washing machine is laid down, the conventional four hanger rods 25 will not play any role and there is a risk that the plunger structure 4 will fall off the housing 3. In order to solve the problems, the one-way limiting structure 7 is arranged in the shock absorber of the outer barrel 1 of the novel washing machine, the structure is arranged at the bottom of the shell 3 and the upper part of the plunger structure 4, the risk that the plunger structure 4 falls off from the shell 3 is solved while the plunger structure 4 does not influence the up-down sliding of the plunger structure 4 on the shell 3, the fixing and shock absorption effects on the outer barrel 1 are still achieved under the extreme condition, and the defects of the four hanging rods 25 are filled.
The principle of the one-way limiting structure 7 is as follows: when the plunger structure 4 is inserted into the housing 3 through the inlet, the first inclined surface 15 of the first limiting member 8 and the second inclined surface 16 of the second limiting member 9 contact to form an axial force, and the elastic member 14 is pressed to compress and deform the elastic member 14, so that the first limiting member 8 and the second limiting member 9 contract and do not play a role in positioning. At this point, the plunger structure 4 can be smoothly installed in place. When the plunger structure 4 is separated from the housing 3, the first plane 17 of the first limiting member 8 and the second plane 18 of the second limiting member 9 form plane contact abutment, so that no axial force is generated, and the first limiting member 8 and the second limiting member 9 play a role in positioning; the plunger structure 4 is prevented from being removed from the housing 3.
In order to enable the vibration damper 2 of the novel washing machine to have better vibration damping effect, the supporting seat 21 is also provided with an elastic vibration damping pad 23, and the vibration damping pad 23 has elasticity, so that the vibration generated in the working process of the outer barrel 1 can be absorbed, and better vibration damping effect is achieved; because novel washing machine outer barrel 1 damping device 2 acts on the lower part of washing machine outer barrel 1, can play the supporting role to outer barrel 1, alleviate the pulling force of four suspender 25 of tradition, and when outer barrel 1 during operation, because the fastening of damper shell is on outer barrel 1, plunger structure 4 passes through supporting seat 21 fastening on the base, plunger structure 4 can produce the damping force through the damping ring with the damper shell, this power is exactly the power that novel washing machine outer barrel 1 shock absorber acted on outer barrel 1, novel washing machine outer barrel 1 shock absorber combines together through four suspender 25 with the tradition, can be better play fixed and damping effect to outer barrel 1, reduce noise and the vibration that outer barrel 1 produced, better user experience has.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a vibration damper, includes casing and plunger structure, have one end open-ended cavity in the casing, plunger structure one end is inserted in the cavity and can be followed the casing friction and slide by the opening, its characterized in that, be equipped with the restriction in the cavity and the plunger structure the one-way limit structure that the plunger structure deviates from in the cavity.
2. A vibration damping device according to claim 1, wherein the one-way restriction is provided on an inner peripheral wall of the chamber around the central axis and on an outer peripheral wall of the plunger structure.
3. A vibration damping device according to claim 1 or 2, wherein the one-way limiting structure comprises a first limiting member and a second limiting member which can limit against each other, the first limiting member is disposed on the inner peripheral wall of the chamber, and the second limiting member is disposed on the outer peripheral wall of the plunger structure;
preferably, the first limiting member protrudes toward the center relative to the inner peripheral wall of the cavity, the second limiting member protrudes toward the direction away from the center relative to the outer peripheral wall of the plunger structure, and opposite side portions of the first limiting member and the second limiting member can abut against each other for limiting.
4. A vibration damping device according to claim 3, wherein said first retaining member is disposed adjacent to an opening of said chamber; the second limiting piece is arranged close to the free end of the plunger structure extending into the cavity;
preferably, the first limiting member and the second limiting member each include at least two members, and are symmetrically disposed around a central axis of the housing or the plunger structure, respectively.
5. A vibration damping device according to claim 3, wherein the inner peripheral wall of the chamber is provided with an annular damping structure, the outer peripheral wall of the plunger structure is in frictional contact with the damping structure, and the first retaining member is located on a side of the damping structure away from the opening;
preferably, the damping structure is provided on an inner peripheral wall of the chamber adjacent to the opening.
6. The vibration damping device according to claim 3, wherein a first mounting groove is formed in the inner peripheral wall of the chamber in the radial direction of the housing, and the first retaining member is mounted in the first mounting groove; a second mounting groove is formed in the outer peripheral wall of the plunger structure along the radial direction of the plunger structure, and the second limiting piece is mounted in the second mounting groove;
preferably, the thickness of a partial peripheral wall of the chamber is increased, and the first mounting groove is arranged at the position where the thickness of the peripheral wall is increased;
preferably, the chamber has an annular enlarged portion with an increased thickness of a peripheral wall thereof near the opening, and the first mounting groove is provided in the annular enlarged portion at an end of the annular enlarged portion near the opening.
7. The vibration damping device according to claim 6, wherein the first limiting member and/or the second limiting member includes an elastic portion therein, or an elastic member is disposed in the first mounting groove and/or the second mounting groove;
preferably, a first elastic element is arranged between the bottom of the first mounting groove and the first limiting element, and/or a second elastic element is arranged between the bottom of the second mounting groove and the second limiting element;
preferably, the first elastic member and/or the second elastic member is made of an elastic material.
8. The vibration damping device according to claim 3, wherein the first limiting member and the second limiting member are both limiting members, and the protruding length of the protruding end portion of the first limiting member on the side close to the opening is smaller than the protruding length of the protruding end portion of the first limiting member on the side away from the opening, so as to form a first inclined slope facing the opening; the protruding length of the end part of the second limiting part, which is close to one side of the end part of the plunger structure, is smaller than the protruding length of the end part of the plunger structure, which is far away from one side of the end part of the plunger structure, so that a second inclined plane facing the end part of the plunger structure is formed.
9. The vibration damping device according to claim 8, wherein a side of the protruding end of the first retaining member away from the opening forms a first plane, a side of the protruding end of the second retaining member away from the end of the plunger structure forms a second plane, and the first plane is abuttable against the second plane.
10. A washing machine having the vibration damper according to any one of claims 1 to 9, comprising a cabinet and an outer tub, both ends of the vibration damper being connected to the cabinet and the outer tub, respectively;
preferably, the box body comprises a base, one end of the vibration damper is connected with the lower part of the outer barrel, and the other end of the vibration damper is connected with the base;
preferably, the base is fixedly provided with a supporting seat, the end part of the vibration damper is connected with the supporting seat, and the supporting seat is further provided with a vibration damping pad.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910757394.8A CN112391798A (en) | 2019-08-16 | 2019-08-16 | Vibration damper and washing machine with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910757394.8A CN112391798A (en) | 2019-08-16 | 2019-08-16 | Vibration damper and washing machine with same |
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| CN112391798A true CN112391798A (en) | 2021-02-23 |
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| CN201910757394.8A Pending CN112391798A (en) | 2019-08-16 | 2019-08-16 | Vibration damper and washing machine with same |
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