CN101195955A - Friction damper for washing machine - Google Patents
Friction damper for washing machine Download PDFInfo
- Publication number
- CN101195955A CN101195955A CNA2007101226560A CN200710122656A CN101195955A CN 101195955 A CN101195955 A CN 101195955A CN A2007101226560 A CNA2007101226560 A CN A2007101226560A CN 200710122656 A CN200710122656 A CN 200710122656A CN 101195955 A CN101195955 A CN 101195955A
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- China
- Prior art keywords
- cover cap
- guider
- friction
- damper
- forms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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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- 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
- D06F37/26—Casings; Tubs
- D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
- D06F37/268—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for suspension devices
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- 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
- D06F37/02—Rotary receptacles, e.g. drums
- D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation 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)
Abstract
A friction damper which is used for washing machine includes the following components: a cover cap which comprises a through hole which is traversed by the rod, a protruding part which radically extends from the outer circumference surface of the cover cap to contact the spring, and a columnar protruding part which forms from the lower end of the protruding part; a guiding device which is pressingly fitted into the cover cap and forms a space with the rod; and a friction reinforcing material which is made from urethane and is accommodated into the space formed on the guiding device. The friction damper generates friction force not by changing the shape of the slot and the stair part, but with the friction reinforcing material made from urethane to provide the proper friction force between the rods in order to semi-permanently use the friction damper.
Description
Technical field
The present invention relates to a kind of friction damper that is used for washing machine, more specifically relate to a kind of friction damper that is used for washing machine, when clothes washing and dehydration, it absorbs the tank vibration that is caused by the sink rotation by the friction between damper and the bar.
Background technology
Usually, washing machine comprises cylindrical shape staving tank and the cylindrical shape sink in the shell that is installed in rectangular shape, and be installed in staving tank and sink below with during washing clothes along clockwise with the motor that counterclockwise rotates this sink.In addition, this washing machine comprises damper, this damper places in each angle of shell and connects the upper panel of this shell and the lower end of staving tank outside, to absorb staving tank and sink are supported in the vibration of staving tank on vertical and horizontal direction simultaneously in the mode of suspension in outer casing space bottom surface during with dehydration at clothes washing.
The present patent application people's title discloses an example of this damper for the 20-1998-0019789 Korean Utility Model Application of " the height decay damper that is used for washing machine ".
In Fig. 1 and Fig. 2, conventional damper 100 comprises circle tube member 110, its formation have the through hole that bar 200 therefrom passes main body, on the inner circumferential surface of circle tube member 110, form friction surface 111 with contact lever 200, the protuberance 120 that radially extends from the middle part of circle tube member 110 along the external peripheral surface of circle tube member 110 and radially pass the crack 121 that this circle tube member 110 and this protuberance 120 form from this damper center.
The crack 121 of the protuberance 120 that forms toward each other, step portion 122 protrudes upward from the surface of the protuberance 120 between the crack 121, needn't apply too high power to protuberance 120 during with the fixed part 400 of convenient protuberance 120 engagement washers and just can shrink protuberance 120 effectively.Each crack 121 extends to circle tube member 110 longitudinally to form second crack 130 circle tube member 110 from this protuberance 120.Extend downwards and in the open lower side of circle tube member 110 in this second crack 130.Therefore, can shrink circle tube member 110 by external force, this can cause the friction between circle tube member 110 and the bar 200.
Inclined-plane 180 forms downwards towards circle tube member 110 with the preceding lower end of about 45 °-70 ° angle from protuberance 120, and contact is positioned at helical spring 300 on the clamper (not shown) of the lower end that is installed in bar 200 flexibly to be supported by this helical spring 300.
Therefore, in conventional damper, when because the rotation of sink and when in washing machine, producing vibration, be installed in the protuberance 120 contact standing parts 400 of the damper 100 on the standing part 400 of tank (not shown) and apply power to damper 100.Thereby except the crack 121 of circle tube member 110, the other parts of damper 100 are shunk also to the center of this damper 100 and are tightly clamped bar 200, so that the friction between the friction surface 111 of bar 200 and circle tube member 110 inside increases.
When producing vibration in the washing machine by being rotated in of sink (not shown), the protuberance 120 of this damper 100 touches the standing part 400 of tank (not shown), cause inclined-plane 180 compression helical springs 300, this helical spring 300 is again by its elastic compression circle tube member 110, so that increase the friction surface 111 of circle tube member 110 and the friction between the bar 200, thereby absorb the vibration of washing machine.
Yet the shrinkage degree of this damper may change, and this depends on the part of protuberance 120 pressurizeds.When in the washing machine sustained vibration predetermined a period of time rear shock absorber rotate and when making crack 121 contact standing parts 400, the shrinkage degree of protuberance 120 reduces, and causes frictional force to reduce.
The present patent application people's title discloses an example of the damper that can address the above problem for the 20-1999-0004215 Korean Utility Model Application of " the dual damper that is used for washing machine ".
The purpose of the damper of the disclosure is to solve the problem of conventional damper and a kind of improved shock absorption is provided.This damper is characterised in that on protuberance additional formed crack and step portion, and for the friction surface with the circle tube member of bar CONTACT WITH FRICTION provides rubber, to increase the frictional force between circle tube member and the bar.
Fig. 3 is the vertical view of the disclosed conventional damper of 20-1999-0004215 Korean Utility Model Application, Fig. 4 is the elevation cross-sectional view of the damper of Fig. 3, Fig. 5 is along the resulting viewgraph of cross-section of Fig. 4 center line A-A, and Fig. 6 is along the resulting viewgraph of cross-section of Fig. 4 center line B-B.
With reference to Fig. 3, damper 10 comprises circle tube member 11, have and be conical substantially and the protuberance 12 that stretches out of one radially from the middle part of circle tube member 11, pass that this protuberance 12 radially forms and a plurality of crack 12a of space fixed angle, extend to circle tube member 11, longitudinally extend downwards from the middle part of circle tube member 11 and from crack 12a in a plurality of second cracks 13 of the lower ending opening of circle tube member 11, and from the outstanding a little step portion 12b of the upper surface of the protuberance 12 between the 12a of each crack.
Because a plurality of crack 12a and step portion 12b form with the interval of said fixing, so even apply power with any direction to protuberance 12, the shrinkage degree of this protuberance 12 also is much at one.Therefore, even the damper 10 that is enclosed within the washing clothes process on the bar 200 rotates on bar 200, the frictional force between circle tube member 11 and this bar 200 also is much at one.
In addition, as Fig. 4 to shown in Figure 6, directly over the protuberance 12 and under the part of circle tube member 11 be provided with the friction enhancing material R that makes by rubber.This friction enhancing material R has the shape that its center has the cuboid of through hole Ra, and be mounted among the groove 11b of circle tube member 11, this groove have corresponding to the shape of friction enhancing material R and directly over the protuberance 12 and under the part internal shaping of circle tube member 11.Here, friction enhancing material R is assembled among the groove 11b so that the through hole Ra of friction enhancing material R overlaps with the through hole of circle tube member 11.Then, bar 200 passes the through hole Ra of the friction enhancing material R that is aligned with each other and the through hole of circle tube member 11.
Therefore, because bar 200 contacts with the friction enhancing material R that the friction surface 11a and the rubber of circle tube member 11 are made simultaneously, so compare with the damper that only is made of plastics of routine, damper 10 has an improved frictional force.
Yet,, comprise that the frictional force that damper obtained of the friction enhancing material of being made by rubber is limited because rubber has less relatively coefficient of friction.In addition, after vibration several times took place tank, it is big that the gap that forms among crack 12a and the step portion 12b becomes, and makes matching loose between bar 200 and the damper 10.
Summary of the invention
Therefore, the present invention carries out in view of the above problems, and the purpose of this invention is to provide a kind of friction damper that is used for washing machine, this damper is not to produce frictional force by the shape that changes crack and step portion, but the friction enhancing material that utilization is made by urethanes provides the frictional force with respect to bar, so that can semipermanent use this damper.
According to the present invention, can realize above-mentioned or other purpose by the friction damper that is provided for washing machine, this damper comprises: cover cap, it has the through hole that bar passes therethrough, and comprise from the external peripheral surface of this cover cap and radially extend protuberance, and the cylindrical shape extension that forms from the lower end of this protuberance with contact spring; Be press fit in this cover cap and form the guider in space with this bar; And the friction enhancing material of making and be housed inside the space that forms on the guider by urethanes.
Preferably, formed this cover cap has a pair of coupling aperture, and formed this guider has and a pair ofly will be assembled to this to the coupling protuberance on the coupling aperture, so that this guider can be coupled on this cover cap.
This cover cap can have the direction recess that forms on the circumferential surface within it, and this guider and the coupling of this direction recess can be led up and down along this direction recess so that this guider can be mounted on this cover cap simultaneously.
This guider can have the lateral grooves that a pair of predetermined portions on its external peripheral surface forms, with this through hole be the center toward each other.
This guider can have the oil filler point of formation in the top with the passage as supply grease in friction enhancing material.
This friction enhancing material can form by coiling urethanes plate.
Description of drawings
Will more be expressly understood above and other objects of the present invention, feature and other advantage by the detailed description of carrying out below in conjunction with accompanying drawing, wherein:
Fig. 1 is the disclosed vertical view that is used for the conventional damper of washing machine of 20-1998-0019789 Korean Utility Model Application;
Fig. 2 is the elevation cross-sectional view of the damper among Fig. 1;
Fig. 3 is the vertical view of the disclosed conventional damper of 20-1999-0004215 Korean Utility Model Application;
Fig. 4 is the elevation cross-sectional view of the damper among Fig. 3;
Fig. 5 is along the resulting viewgraph of cross-section of Fig. 4 center line A-A;
Fig. 6 is along the resulting viewgraph of cross-section of Fig. 4 center line B-B;
Fig. 7 is the view that is used for the friction damper of washing machine according to of the present invention;
Fig. 8 is along the resulting viewgraph of cross-section of Fig. 7 center line A-A ';
Fig. 9 is the parts exploded perspective view according to friction damper of the present invention;
The specific embodiment
Describe the preferred embodiments of the invention in detail referring now to accompanying drawing.
Fig. 7 is the view that is used for the friction damper of washing machine according to of the present invention, and Fig. 8 is along the resulting viewgraph of cross-section of Fig. 7 center line A-A ', and Fig. 9 is the parts exploded perspective view according to friction damper of the present invention.
With reference to figure 7 to Fig. 9, the friction damper that is used for washing machine according to the present invention comprises: cover cap 610, it has the through hole that bar passes therethrough, and comprise from the external peripheral surface of this cover cap 610 and radially extend protuberance 612 with contact spring 700, and the cylindrical shape extension 613 that forms from the lower end of protuberance 612, be press fit in this cover cap 610 and form the guider 620 in spaces with bar 500; And the friction enhancing material 630 of making and be housed inside the space that forms on the guider 620 by urethanes.
More specifically, cover cap 610 comprises with the predetermined angle incline of lampshade shape, radially extend and engagement washer in the protuberance 612 of standing part (not shown), and have than the little diameter of the diameter of protuberance 612 and hold the extension 613 of the friction enhancing material of making by urethanes 630.Upper end at the guider 612 of cover cap 610 forms oil filler point 614, and this oil filler point 614 is as the passage to friction enhancing material 630 supply greases.When damper 600 when bar 500 moves, this grease is used for reducing damper 600 to greatest extent because the wearing and tearing that friction causes.Particularly, pass the upper end of cover cap 610 and supply greases, thereby minimize the wearing and tearing of friction enhancing material 630 to the friction enhancing material 630 that is arranged in guider 620.
The extension 613 of cover cap 610 has the drum of an end opening, and the guider 620 that will wherein hold friction enhancing material 630 is assembled to the inner space of extension 613.Predetermined portions on the external peripheral surface of guider 620 forms a pair of lateral grooves respect to one another 621.Because the guider 620 that exists of this lateral grooves 621 radially can have predetermined elasticity.Therefore, when assembling guider 620 and cover cap 610, this guider 620 is compressed earlier, and is being connected the back reinstatement with cover cap 610 hooks.
Can form interference fit for making between guider 620 and the cover cap 610, on cover cap 610, form a pair of coupling aperture 615, and form a pair of coupling protuberance 622 that will be assembled on this a pair of coupling aperture 615 on the guider 620.In addition, on the inner circumferential surface of cover cap 610, form direction recess 616, and this direction recess 616 provides directive property when assembling cover cap 610 and guider 620, thereby prevent cover cap 610 and guider 620 mistake assemblings.
The friction enhancing material 630 that is contained in the guider 620 can form by coiling urethanes plate.The friction enhancing material 630 that forms by coiling urethanes plate can present constant frictional force in any direction.For example, Cellasto is as friction enhancing material 630.Cellasto is the elastomeric name of product of micropore polyurethane (PU) that can obtain from German Elastogran GmbH company, and Elastogran GmbH is the subsidiary of Basf AG.Cellasto is as the secondary spring (spring aid) or the collision brake device (bump stopper) of vehicle chassis, and more and more is applied to vehicle and general industry field to reduce noise, vibration and sound vibration roughness (NVH).More specifically, Cellasto is used for cathode-ray tube, the elevator brake of TV and leads in the abrasive disk of paper live-roller (paperconveyer roller).
Cellasto has several characteristics, such as low compression, no matter static state still is remarkable durability, high abrasion ability, anti-aliphatic hydrocarbon such as oil, anti-ozone dynamic situation under, has the high coefficient of bulk compressibility of minimum lateral expansion and owing to not having such as the heavy metal composition of cadmium and harmless etc., thereby present the optimum capacity that is used for the antifriction member.
Table 1 shows the various performances of Cellasto
Table 1
Hereinafter, will the operation of damper 600 be described.
Washing machine comprises cylindrical shape tank and the cylindrical shape sink in the shell that is installed in rectangular shape, and be installed in tank and sink below in order in the washing clothes process with clockwise with the motor that counterclockwise rotates this sink.At this moment, damper 600 places in each angle of shell and connects the upper panel of this shell and the lower end of tank outside, to absorb the vibration of tank on vertical direction and horizontal direction, in the space of shell, support the bottom surface of tank and sink simultaneously in the mode that hangs at clothes washing and when dehydration.
More specifically, the vibration of tank causes that each damper 600 moves up and down along bar 500.Here, because the friction between friction enhancing material 630 and the bar 500, damper 600 has the vibration frequency lower than the vibration frequency of tank, thereby has reduced vibration.Under the situation that damper 600 moves down along bar 500, the frictional force between the elastic force of spring 700 and friction enhancing material 630 and the bar 500 is used to absorb the vibration of tank.In addition, under the situation that spring 700 is extended from compressive state, the frictional force between friction enhancing material 630 and the bar 500 will reduce the draw speed of spring 700.
That is to say, be different from the conventional damper that produces frictional force by the shape that changes crack and step portion, damper of the present invention keep its original-shape and utilize the friction enhancing material of making by urethanes to provide with wear-resistant and great friction coefficient and bar 500 between suitable frictional force, reduced the impact of transmitting from tank effectively and can safeguard on semipermanent ground simultaneously.
According to washing machine determine quantity, intensity, the width of friction enhancing material 630 such as design specifications such as vibration characteristics, to keep suitable shock absorption.
As conspicuous by above-mentioned explanation institute, the invention provides a kind of friction damper that is used for washing machine, this friction damper is not to produce frictional force by the shape that changes crack and step portion, but utilize the friction enhancing material of making by urethanes to provide and bar between frictional force so that this friction damper can use on semipermanent ground.
Should be understood that describing above-mentioned embodiment and accompanying drawing is for illustrative purpose, and the present invention is limited by following claim.In addition, those having ordinary skill in the art will appreciate that under the situation that does not depart from the scope and spirit of setting forth according to appended claim of the present invention, can carry out various modifications, increase and displacement.
Claims (6)
1. friction damper that is used for washing machine comprises:
Cover cap, it has the through hole that bar passes therethrough, and comprises from the external peripheral surface of described cover cap and radially extend protuberance with contact spring, and the columnar extension that forms from the lower end of described protuberance;
Be press fit in the described cover cap and form the guider in space with described bar; And
Make and be housed inside the friction enhancing material in the space that forms on the described guider by urethanes.
2. friction damper according to claim 1, the cover cap of wherein said formation has a pair of coupling aperture, and the guider of described formation have a pair of will be assembled to described to the coupling protuberance on the coupling aperture so that described guider can be coupled on the described cover cap.
3. friction damper according to claim 1, wherein said cover cap can have the direction recess that forms on the circumferential surface within it, and the described direction recess coupling of described guider and described cover cap is assembled to prevent described cover cap and described guider mistake.
4. friction damper according to claim 1, that wherein said guider has is that a pair of predetermined portions on its external peripheral surface forms, be center lateral grooves respect to one another with the through hole, so that in the starting stage that described guider is assembled to described cover cap, described guider can be compressed by tensile strength, and is being connected the back reinstatement with described cover cap hook to prevent that described guider and described cover cap from separating.
5. friction damper according to claim 1, wherein said cover cap have in the top the oil filler point that forms with as passage from grease to friction enhancing material that supply.
6. friction damper according to claim 1, wherein said friction enhancing material forms by coiling urethanes plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060123907 | 2006-12-07 | ||
| KR1020060123907A KR100799632B1 (en) | 2006-12-07 | 2006-12-07 | Friction damper for washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101195955A true CN101195955A (en) | 2008-06-11 |
Family
ID=39219816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101226560A Pending CN101195955A (en) | 2006-12-07 | 2007-07-10 | Friction damper for washing machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2008142524A (en) |
| KR (1) | KR100799632B1 (en) |
| CN (1) | CN101195955A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251374A (en) * | 2011-03-21 | 2011-11-23 | 海尔集团公司 | Damping suspension rods of washing machine |
| CN102660854A (en) * | 2012-06-04 | 2012-09-12 | 昌邑市永富弹簧有限公司 | Damping assembly of impeller automatic washing machine |
| CN104514118A (en) * | 2013-10-01 | 2015-04-15 | 莎姆克有限责任公司 | Vibration absorption damper for automatic washer |
| CN108978126A (en) * | 2017-05-31 | 2018-12-11 | 日立空调·家用电器株式会社 | Washing machine |
| CN109594295A (en) * | 2017-09-30 | 2019-04-09 | 无锡小天鹅股份有限公司 | The damper of washing machine and washing machine with it |
| CN109594294A (en) * | 2017-09-30 | 2019-04-09 | 无锡小天鹅股份有限公司 | The damper of washing machine and washing machine with it |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9340916B2 (en) | 2010-04-13 | 2016-05-17 | Whirlpool Corporation | Laundry treating appliance suspension system |
| KR101754683B1 (en) * | 2014-07-11 | 2017-07-06 | 엘지전자 주식회사 | Washing machine |
| US9963814B2 (en) * | 2014-07-11 | 2018-05-08 | Lg Electronics Inc. | Washing machine |
| KR102448507B1 (en) * | 2015-05-04 | 2022-09-29 | 삼성전자주식회사 | Damping apparatus and washing machine including the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200185962Y1 (en) | 2000-01-29 | 2000-06-15 | 이원웅 | Vibration absorption device for washing machine |
-
2006
- 2006-12-07 KR KR1020060123907A patent/KR100799632B1/en active IP Right Grant
-
2007
- 2007-06-18 JP JP2007160465A patent/JP2008142524A/en active Pending
- 2007-07-10 CN CNA2007101226560A patent/CN101195955A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251374A (en) * | 2011-03-21 | 2011-11-23 | 海尔集团公司 | Damping suspension rods of washing machine |
| CN102251374B (en) * | 2011-03-21 | 2016-08-03 | 青岛海尔洗衣机有限公司 | A kind of shock-absorbing suspension rod of washing machine |
| CN102660854A (en) * | 2012-06-04 | 2012-09-12 | 昌邑市永富弹簧有限公司 | Damping assembly of impeller automatic washing machine |
| CN104514118A (en) * | 2013-10-01 | 2015-04-15 | 莎姆克有限责任公司 | Vibration absorption damper for automatic washer |
| CN108978126A (en) * | 2017-05-31 | 2018-12-11 | 日立空调·家用电器株式会社 | Washing machine |
| CN109594295A (en) * | 2017-09-30 | 2019-04-09 | 无锡小天鹅股份有限公司 | The damper of washing machine and washing machine with it |
| CN109594294A (en) * | 2017-09-30 | 2019-04-09 | 无锡小天鹅股份有限公司 | The damper of washing machine and washing machine with it |
| US11293128B2 (en) | 2017-09-30 | 2022-04-05 | Wuxi Little Swan Electric Co., Ltd. | Shock absorber for washing machine and washing machine having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100799632B1 (en) | 2008-01-31 |
| JP2008142524A (en) | 2008-06-26 |
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Open date: 20080611 |