CN104099752A - Damping force-variable vibration damper for washing machine - Google Patents
Damping force-variable vibration damper for washing machine Download PDFInfo
- Publication number
- CN104099752A CN104099752A CN201310121596.6A CN201310121596A CN104099752A CN 104099752 A CN104099752 A CN 104099752A CN 201310121596 A CN201310121596 A CN 201310121596A CN 104099752 A CN104099752 A CN 104099752A
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- Prior art keywords
- piston
- washing machine
- cylinder
- damping force
- friction plate
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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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The invention discloses a damping force-variable vibration damper for a washing machine. The vibration damper comprises a cylinder, a piston and at least one friction plate, wherein the friction plate closely clings to the inner wall of the cylinder, and contacts with the outer wall of the piston; the radius of one section of the piston is smaller than that of the other section of the piston. The vibration damper is applied to the high-amplitude working conditions of washing, rinsing, low-speed water extraction and the like of the washing machine as well as the low-amplitude working condition of high-speed water extraction; the vibration damper has a function of effectively suppressing the vibration of the washing machine, so that the vibration of an enclosure of the washing machine and the noise level of the whole washing machine are improved.
Description
Technical field
The present invention relates to an electro-technical field, relate in particular to roller washing machine damper.
Background technology
The current consideration for the factor such as cost and manufacturing technique, what each washing machine producer adopted is the damper of constant damping power mostly.But the whole impulse stroke of roller washing machine had both comprised the large amplitude operating modes such as washing, rinsing, low speed dehydration, comprise again the little amplitude operating mode that high speed dewatering is such, in order to suppress the vibration of large amplitude operating mode, need to select the damper of larger damping force, but larger damping force has easily encouraged the larger vibration of laundry chassis shell in little amplitude operating mode (such as the high speed dewatering) stage, and the noise of complete machine also can increase; And if the damper of the less damping force of employing cannot suppress the vibration of large amplitude operating mode, there is the risk of complete machine displacement.
For example, on roller washing machine, the damper of extensive use is friction damper at present, as shown in Figure 1 to Figure 3, this damper comprise a cylinder 1 ', piston 2 ' and friction plate 3 ', cylinder 1 ' one end be connected with the wash bucket of washing machine, cylinder 1 ' the other end be provided with opening, piston 2 ' one end from this opening insert cylinder 1 ' in, piston 2 ' the other end be connected with the bottom of laundry chassis shell, friction plate 3 ' be close to cylinder 1 ' inwall and with piston 2 ' outer wall contact.
In the time that washing machine is worked, the motion of wash bucket drives cylinder 1 ' motion, be fixed on for this reason friction plate 3 on cylinder 1 ' inwall ' and one end be fixed on the piston 2 of laundry chassis shell ' between produce relative motion, due to tribology principle, piston 2 ' to cylinder 1 ' one of generation damping force, the size of this damping force by friction plate 3 ', piston 2 ' coefficient of friction and pressure between the two determine, and direction is contrary with both direction of relative movement.Utilize this damping force can suppress the excessive vibration of wash bucket, but due to the interaction principle of power, cylinder 1 ' to piston 2 ' also can the produce reaction force of an opposite sign but equal magnitude, this reaction force acts, in the bottom of laundry chassis shell, makes case shell produce corresponding vibration.
Therefore, be necessary to design a kind of new damper, this damper is not only applicable to washing machine in large amplitude operating modes such as washing, rinsing, low speed dehydrations, be applicable to again the so little amplitude operating mode of high speed dewatering, the vibrations that this damper all can produce washing machine produce effective inhibitory action, thereby improve the laundry vibration of chassis shell and the noise level of complete machine.
Summary of the invention
The problem that the present invention solves is to provide a kind of damper, this damper is not only applicable to washing machine in large amplitude operating modes such as washing, rinsing, low speed dehydrations, be applicable to again the so little amplitude operating mode of high speed dewatering, the vibrations that this damper all can produce washing machine produce effective inhibitory action, thereby improve the laundry vibration of chassis shell and the noise level of complete machine.
For addressing the above problem, the present invention has disclosed a kind of washing machine vibration absorber of damping force variable, described damper comprises a cylinder, a piston and at least one friction plate, one end of described cylinder is connected with the wash bucket of washing machine, the other end of described cylinder is provided with opening, insert in described cylinder from described opening one end of described piston, the other end of described piston is connected with the bottom of laundry chassis shell, described friction plate is close to the inwall of described cylinder and is contacted with the outer wall of described piston, the described piston wherein radius of a section is less than the radius of described all the other sections of piston.
Preferably, the small radii section of described piston is positioned at the middle part of described piston.
Preferably, round and smooth excessively by oblique line or camber line between the small radii section of described piston and relatively large radius section.
Preferably, the thickness of described friction plate is greater than the poor of the internal diameter of described cylinder and the minimum outer diameter of described piston.
Preferably, the height of described friction plate is less than the height of small radii section on described piston.
Preferably, described cylinder is plastic cylinder.
Preferably, described piston is metallic piston.
Preferably, described friction plate is arranged at the opening part of described cylinder.
Preferably, described friction plate is high-wearing feature friction plate.
Compared with prior art, the present invention has the following advantages: the washing machine vibration absorber of disclosed damping force variable, comprise a cylinder, a piston and at least one friction plate, one end of described cylinder is connected with the wash bucket of washing machine, the other end of described cylinder is provided with opening, insert in described cylinder from described opening one end of described piston, the other end of described piston is connected with the bottom of laundry chassis shell, described friction plate is close to the inwall of described cylinder and is contacted with the outer wall of described piston, the described piston wherein radius of a section is less than the radius of described all the other sections of piston.The washing machine vibration absorber of disclosed damping force variable, by the radial design of the piston of damper is become to different size, in the time that washing machine is worked, the piston applications of different radii size is in different washing process, for washing machine provides the Bu Tong damping force of size in different phases such as washing, rinsing and dehydrations, to reach the object of vibration damping.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of damper in prior art;
Fig. 2 is the longitudinal sectional view of damper in prior art;
Fig. 3 is the structural representation of shock absorber piston in prior art;
Fig. 4 is the longitudinal sectional view of damper in the preferred embodiment of the present invention;
Fig. 5 be in Fig. 4 between D-E part structure for amplifying schematic diagram;
Fig. 6 is the structural representation of shock absorber piston in the preferred embodiment of the present invention;
Fig. 7 is the longitudinal sectional view of damper in the time of stretching travel in the preferred embodiment of the present invention;
Fig. 8 is the structure for amplifying schematic diagram of C-D portion in Fig. 7;
Fig. 9 is the longitudinal sectional view of damper in the time of compression travel in the preferred embodiment of the present invention;
Figure 10 is the structure for amplifying schematic diagram of Fig. 9 center line part;
Wherein: 1 ', cylinder; 2 ', piston; 3 ', friction plate; 1, cylinder; 2, piston; 3, friction plate.
Detailed description of the invention
On roller washing machine, the damper of extensive use is friction damper at present, as shown in Figure 1 to Figure 3, this damper comprise a cylinder 1 ', piston 2 ' and friction plate 3 ', cylinder 1 ' one end be connected with the wash bucket of washing machine, cylinder 1 ' the other end be provided with opening, piston 2 ' one end from this opening insert cylinder 1 ' in, piston 2 ' the other end be connected with the bottom of the chassis shell of doing washing, friction plate 3 ' be close to cylinder 1 ' inwall and with piston 2 ' outer wall contact.
So arrange, when washing machine running, the motion of washtub drive cylinder 1 ' along cylinder 1 ' and piston 2 ' identical axis move back and forth, due to friction plate 3 ' be to be fixed on the inwall of cylinder 1, friction plate 3 for this reason ' piston 2 ' outer wall on constantly reciprocatingly slide.From the principle of force of sliding friction, the size of frictional force determines by the coefficient of sliding friction with perpendicular to the normal pressure of glide direction, and wherein, material, the surface roughness etc. of friction objects is relevant mutually to two for the coefficient of sliding friction, in this case definite value; Simultaneously, due to cylinder 1 ' and piston 2 ' be definite value along the each position of axis direction diameter, friction plate 3 for this reason ' suffered normal pressure is also definite value, the damping force amplitude for this reason providing in the damper course of work is also definite value, be damper in the whole operation process of washing machine, comprise that the damping force amplitude that washing, rinsing and the high speed dewatering stage of low speed provide is all identical.
But the whole impulse stroke of roller washing machine had both comprised the large amplitude operating modes such as washing, rinsing, low speed dehydration, comprise again the little amplitude operating mode that high speed dewatering is such, in order to suppress the vibration of large amplitude operating mode, need to select the damper of larger damping force, but larger damping force has easily encouraged the larger vibration of laundry chassis shell in little amplitude operating mode (such as the high speed dewatering) stage, and the noise of complete machine also can increase; And if the damper of the less damping force of employing cannot suppress the vibration of large amplitude operating mode, there is the risk of complete machine displacement.
In view of the above-mentioned problem of stating existing in prior art, the present invention has disclosed a kind of washing machine vibration absorber of damping force variable, this damper is not only applicable to washing machine in large amplitude operating modes such as washing, rinsing, low speed dehydrations, be applicable to again the so little amplitude operating mode of high speed dewatering, the vibrations that this damper all can produce washing machine produce effective inhibitory action, thereby improve the laundry vibration of chassis shell and the noise level of complete machine.
Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is described in detail.
As shown in Fig. 4 to Figure 10, the present invention has disclosed a kind of washing machine vibration absorber of damping force variable, comprise a cylinder 1, piston 2 and a friction plate 3, one end of cylinder 1 is connected with the wash bucket of washing machine, the other end of cylinder 1 is provided with opening, insert in cylinder 1 from the opening of cylinder 1 one end of piston 2, the other end of piston 2 is connected with the bottom of laundry chassis shell, friction plate 3 is close to the inwall of cylinder 1 and is contacted with the outer wall of piston 2, and the piston 2 wherein radius of a section is less than the radius of piston 2 all the other sections.
The piston radius that is different from damper in prior art is definite value, the piston 2 of disclosed damper is the structure of a change radius, wherein certain section of radius that is piston 2 reduces, when washing machine is during in the high speed dewatering stage, the stroke of friction plate 3 is in this small radii section, because gap between the outer wall at this section of inner carrier 2 and cylinder 1 inwall increases, the suffered normal pressure of friction plate 3 is with respect to reducing in piston 2 other section of suffered normal pressures; Simultaneously because the slip damped coefficient between friction plate 3 and piston 2 is constant, can relative other section of this small radii section internal friction amplitude be reduced by tribology principle, realize thus the function that damper provides less damping force with inhibition high frequency, slightly to vibrate, so make damper be suitable for the washing machine high speed dewatering stage.Disclosed damper, piston 2 is except certain section of radius is wherein less, the radius of all the other sections is all greater than this section, when washing machine is in washing, rinsing, when the large amplitude operating modes such as low speed dehydration, the stroke of friction plate 3 in this relatively large radius section (as shown in Figure 8, friction plate 3 moves to D position process by C, or by D to C process, what most of region inner attrition piece 3 was suffered is larger normal pressure, damper provides larger damping force thus, only when interval through small radii, damping force amplitude reduces, but because the interval shared scope of the relative C-D of small radii section is less, the for this reason little damping force stage is shorter, major part is the large damping force stage), now damper damping force in the time of this partial journey is relatively large, in order to suppress the vibration that wash bucket is larger.
Further, when disclosed damper during at large amplitude work condition state the state during in stretching travel as shown in Figure 7, when disclosed damper, the state during in compression travel is as shown in Figure 9 during at large amplitude work condition state.
In the preferred embodiment of the present invention, the small radii section of piston 2 is positioned at the middle part of piston 2.In concrete operations, on piston 2, the position of small radii section on whole piston 2, because the difference of washing machine model is different, specifically can be gone out by calculation of parameter such as the washing machine internal system weight of applicable model, extension spring rigidity, equipoise, vibration at high speed sizes.
Preferably, round and smooth excessively by oblique line or camber line between the small radii section of piston 2 and relatively large radius section.So arrange, the transition between piston 2 small radii sections and relatively large radius section is more smooth, thereby the damping force that makes damper transition in the process of (or from small to large) is from large to small more smooth-going, is more conducive to the vibration and noise reducing of washing machine.
Preferably, the thickness of friction plate 3 is greater than the poor of the internal diameter of cylinder 1 and the minimum outer diameter of piston 2.So arrange, after damper has assembled, friction plate 3 is between piston 2 and cylinder 1, in compressive state to a certain degree.
Preferably, the height of friction plate 3 is less than the height of small radii section on piston 2, and friction plate 3 can be reciprocatingly slided freely in small radii section on piston 2.
In addition, cylinder 1 is plastic cylinder, and piston 2 is metallic piston.Certainly, cylinder 1 and piston 2 also can adopt other applicable material.
Preferably, friction plate 3 is arranged at the opening part of cylinder 1.Friction plate 3 should be selected high-wearing feature friction plate, to improve the service life of washing machine vibration absorber entirety.
The washing machine vibration absorber of disclosed damping force variable, comprise a cylinder 1, piston 2 and a friction plate 3, one end of cylinder 1 is connected with the wash bucket of washing machine, the other end of cylinder 1 is provided with opening, insert in cylinder 1 from opening one end of piston 2, the other end of piston 2 is connected with the bottom of laundry chassis shell, and friction plate 3 is close to the inwall of cylinder 1 and is contacted with the outer wall of piston 2, and the piston 2 wherein radius of a section is less than the radius of piston 2 all the other sections.The washing machine vibration absorber of disclosed damping force variable, by the radial design of the piston of damper 2 is become to different size, in the time that washing machine is worked, the piston 2 of different radii size is applied to different washing process, for washing machine provides the Bu Tong damping force of size in different phases such as washing, rinsing and dehydrations, to reach the object of vibration damping.
The washing machine vibration absorber of disclosed damping force variable is not added any parts on existing washing machine vibration absorber basis, and simple in structure, reliability is high, with low cost.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. the washing machine vibration absorber of a damping force variable, it is characterized in that: described damper comprises a cylinder, a piston and at least one friction plate, one end of described cylinder is connected with the wash bucket of washing machine, the other end of described cylinder is provided with opening, insert in described cylinder from described opening one end of described piston, the other end of described piston is connected with the bottom of laundry chassis shell, described friction plate is close to the inwall of described cylinder and is contacted with the outer wall of described piston, and the described piston wherein radius of a section is less than the radius of described all the other sections of piston.
2. the washing machine vibration absorber of damping force variable according to claim 1, is characterized in that: the small radii section of described piston is positioned at the middle part of described piston.
3. the washing machine vibration absorber of damping force variable according to claim 1 and 2, is characterized in that: round and smooth excessively by oblique line or camber line between the small radii section of described piston and relatively large radius section.
4. the washing machine vibration absorber of damping force variable according to claim 1, is characterized in that: the thickness of described friction plate is greater than the poor of the internal diameter of described cylinder and the minimum outer diameter of described piston.
5. the washing machine vibration absorber of damping force variable according to claim 1, is characterized in that: the height of described friction plate is less than the height of small radii section on described piston.
6. the washing machine vibration absorber of damping force variable according to claim 1, is characterized in that: described cylinder is plastic cylinder.
7. the washing machine vibration absorber of damping force variable according to claim 1, is characterized in that: described piston is metallic piston.
8. the washing machine vibration absorber of damping force variable according to claim 1, is characterized in that: described friction plate is arranged at the opening part of described cylinder.
9. according to the washing machine vibration absorber of the damping force variable described in claim 1 or 8, it is characterized in that: described friction plate is high-wearing feature friction plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310121596.6A CN104099752A (en) | 2013-04-09 | 2013-04-09 | Damping force-variable vibration damper for washing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310121596.6A CN104099752A (en) | 2013-04-09 | 2013-04-09 | Damping force-variable vibration damper for washing machine |
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| CN104099752A true CN104099752A (en) | 2014-10-15 |
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| CN201310121596.6A Pending CN104099752A (en) | 2013-04-09 | 2013-04-09 | Damping force-variable vibration damper for washing machine |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864340A (en) * | 2015-01-23 | 2016-08-17 | 青岛海尔滚筒洗衣机有限公司 | Variable damping shock absorber |
| CN109306599A (en) * | 2017-07-28 | 2019-02-05 | 青岛海尔洗衣机有限公司 | A kind of design method of washing machine anticollision barrel |
| CN109306601A (en) * | 2017-07-28 | 2019-02-05 | 青岛海尔洗衣机有限公司 | A kind of washing machine horizontal shock-absorbing device and washing machine |
| CN109306600A (en) * | 2017-07-28 | 2019-02-05 | 青岛海尔洗衣机有限公司 | A kind of washing machine anticollision barrel and washing machine |
| CN110616544A (en) * | 2018-06-19 | 2019-12-27 | 青岛海尔洗衣机有限公司 | Washing machine |
| WO2020063361A1 (en) * | 2018-09-29 | 2020-04-02 | 青岛海尔洗衣机有限公司 | Shock absorber for washing machine and washing machine |
| CN110965269A (en) * | 2018-09-29 | 2020-04-07 | 青岛海尔洗衣机有限公司 | Washing machine shock absorber and washing machine |
| CN110965268A (en) * | 2018-09-29 | 2020-04-07 | 青岛海尔洗衣机有限公司 | Washing machine shock absorber and washing machine |
| CN110965267A (en) * | 2018-09-29 | 2020-04-07 | 青岛海尔洗衣机有限公司 | Washing machine shock absorber and washing machine |
| CN111088659A (en) * | 2018-10-23 | 2020-05-01 | 青岛海尔滚筒洗衣机有限公司 | Variable damping shock absorber and clothes treatment equipment |
| CN111172713A (en) * | 2018-11-12 | 2020-05-19 | 青岛海尔智能技术研发有限公司 | Damping device of washing machine, washing machine and assembly method of damping device |
| DE102020111770A1 (en) | 2020-04-30 | 2021-11-04 | Miele & Cie. Kg | Damper for a washing machine |
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| DE3616373A1 (en) * | 1986-05-15 | 1987-11-19 | Miele & Cie | Friction damper |
| JPS63251639A (en) * | 1987-04-07 | 1988-10-19 | Toshiba Corp | Device for absorbing vibration energy |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864340B (en) * | 2015-01-23 | 2019-05-28 | 青岛海尔滚筒洗衣机有限公司 | A kind of damping changing impact damper |
| CN105864340A (en) * | 2015-01-23 | 2016-08-17 | 青岛海尔滚筒洗衣机有限公司 | Variable damping shock absorber |
| CN109306600B (en) * | 2017-07-28 | 2022-04-12 | 青岛海尔洗衣机有限公司 | Washing machine anti-collision barrel device and washing machine |
| CN109306599A (en) * | 2017-07-28 | 2019-02-05 | 青岛海尔洗衣机有限公司 | A kind of design method of washing machine anticollision barrel |
| CN109306601A (en) * | 2017-07-28 | 2019-02-05 | 青岛海尔洗衣机有限公司 | A kind of washing machine horizontal shock-absorbing device and washing machine |
| CN109306600A (en) * | 2017-07-28 | 2019-02-05 | 青岛海尔洗衣机有限公司 | A kind of washing machine anticollision barrel and washing machine |
| CN109306601B (en) * | 2017-07-28 | 2022-04-26 | 青岛海尔洗衣机有限公司 | Washing machine and transverse damping device thereof |
| CN110616544A (en) * | 2018-06-19 | 2019-12-27 | 青岛海尔洗衣机有限公司 | Washing machine |
| CN110616544B (en) * | 2018-06-19 | 2023-12-12 | 天津海尔洗涤电器有限公司 | Washing machine |
| CN110965267B (en) * | 2018-09-29 | 2022-05-24 | 青岛海尔洗衣机有限公司 | Washing machine shock absorber and washing machine |
| CN110965269B (en) * | 2018-09-29 | 2022-02-01 | 青岛海尔洗衣机有限公司 | Washing machine shock absorber and washing machine |
| CN110965269A (en) * | 2018-09-29 | 2020-04-07 | 青岛海尔洗衣机有限公司 | Washing machine shock absorber and washing machine |
| WO2020063361A1 (en) * | 2018-09-29 | 2020-04-02 | 青岛海尔洗衣机有限公司 | Shock absorber for washing machine and washing machine |
| CN110965268B (en) * | 2018-09-29 | 2022-05-13 | 青岛海尔洗衣机有限公司 | Washing machine shock absorber and washing machine |
| CN110965268A (en) * | 2018-09-29 | 2020-04-07 | 青岛海尔洗衣机有限公司 | Washing machine shock absorber and washing machine |
| CN110965267A (en) * | 2018-09-29 | 2020-04-07 | 青岛海尔洗衣机有限公司 | Washing machine shock absorber and washing machine |
| CN111088659A (en) * | 2018-10-23 | 2020-05-01 | 青岛海尔滚筒洗衣机有限公司 | Variable damping shock absorber and clothes treatment equipment |
| CN111088659B (en) * | 2018-10-23 | 2022-06-17 | 合肥海尔滚筒洗衣机有限公司 | Variable damping shock absorber and clothes treatment equipment |
| CN111172713A (en) * | 2018-11-12 | 2020-05-19 | 青岛海尔智能技术研发有限公司 | Damping device of washing machine, washing machine and assembly method of damping device |
| CN111172713B (en) * | 2018-11-12 | 2022-06-14 | 青岛海尔智能技术研发有限公司 | Damping device of washing machine, washing machine and assembly method of damping device |
| DE102020111770A1 (en) | 2020-04-30 | 2021-11-04 | Miele & Cie. Kg | Damper for a washing machine |
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Application publication date: 20141015 |