CN1730784A - Dual vibration damper for washing machine - Google Patents
Dual vibration damper for washing machine Download PDFInfo
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- CN1730784A CN1730784A CN 200410020282 CN200410020282A CN1730784A CN 1730784 A CN1730784 A CN 1730784A CN 200410020282 CN200410020282 CN 200410020282 CN 200410020282 A CN200410020282 A CN 200410020282A CN 1730784 A CN1730784 A CN 1730784A
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Abstract
The double damper for washer including casing, outer tank, inner tank and damper features the double damping structure comprising hollow cylinder, piston, friction unit, the second reducing unit, buffering unit and the raised unit. The piston reciprocates inside the cylinder; the friction unit formed on the outer peripheral of the piston rubs with the inner peripheral of the cylinder to absorb vibration; the second reducing unit consists of one pair of brake units in the end of the piston, one throttle ring forming friction contact between the brakes and the piston and one friction part; and the buffering unit is for the impact between the throttle ring and the brakes. The double damper for washer has proper attenuation force while the inner tank in either over vibration state and normal vibration state.
Description
Technical field
The present invention relates to a kind of dual damping device of washing machine.
Background technology
In general, washing machine is the machine that the percussion of decomposition by chemistry and machinery is removed the dirt on the washings or foul.
Wherein, roller washing machine can reduce whole height, and can increase capacity than agitator (PULSATOR) washing machine of endways rotation inside groove, and problem such as take place that washings tangles hardly is so the trend that the demand of roller washing machine is tending towards rising gradually.
With reference to the accompanying drawings, the structure to general roller washing machine is elaborated.
As shown in Figure 1, roller washing machine includes following structure substantially: water jacket (20), inside groove (30) and drive division (40).Above-mentioned water jacket (20) is supported on the inside of casing (CABINET) (10) by friction damper (100) and suspension spring (50), and above-mentioned casing (10) forms the outward appearance of roller washing machine; The cylindrical shape of above-mentioned inside groove (30) can be arranged in the above-mentioned water jacket (30) rotatably; Above-mentioned drive division (40) carries out axle with above-mentioned inside groove (30) and links.
In addition, be provided with suspension spring (suspension spring) (50) between the outer peripheral face upper side of and water jacket (20) inboard in the upper side of above-mentioned casing (10), above-mentioned suspension spring (50) is used to support water jacket (20); Be provided with friction damper (friction damper) (100) in the lower inside surface of above-mentioned casing (10) and the outer peripheral face lower side of water jacket (20), the vibration of the water jacket (20) that produces when above-mentioned friction damper (100) is used to weaken dehydration.
Below, the work of above-mentioned roller washing machine is described.
At first, when the user carries out the washing of washings, after washings is dropped in the inside of above-mentioned inside groove (30), start washing machine and supplying washing water in above-mentioned inside groove (30).If finish water supply, then under washings is immersed in state in the washings, the driving force by above-mentioned drive division (40) is rotated inside groove (30).Along with the rotation of above-mentioned inside groove (30), washings and the washings of putting into inside groove (30) inboard after rising to certain altitude, upside are dropped downwards along the inside of above-mentioned inside groove (30); By carrying out said process repeatedly, make between washings and inside groove (30) the inside and produce friction, by the effect of above-mentioned friction and washing agent washings is washed.
If finish washing process, through after carrying out the several rinse cycle, begin to carry out dehydration again.In dehydration, make above-mentioned inside groove (30) rotation execution dehydration at a high speed.
When carrying out above-mentioned dehydration stroke, the revolution of inside groove (30) is increased to the target revolution from the inactive state linearity; At the low rotation initial stage of revolution, the zone consistent with eigentone at the revolution of above-mentioned inside groove (30) can produce covibration, makes above-mentioned inside groove (30) produce the undue oscillation state of large-amplitude vibration.
In addition, if along with the increase of revolution breaks away from above-mentioned resonance zone, the amplitude of above-mentioned inside groove (30) is diminished gradually enter the normal vibration state region.
So the vibration of above-mentioned washing machine inside groove (30) is the center with the resonance point along with the revolution of inside groove (30) changes; The vibration transfer of above-mentioned inside groove (30) is given water jacket (20), and vibration at this moment absorbs and weakens by suspension spring (50) and friction damper (100) and is delivered to above-mentioned water jacket (20); Above-mentioned suspension spring (50) is arranged on the top of water jacket (20), and above-mentioned friction damper (100) is arranged on the bottom of water jacket (20).
As shown in Figure 2, existing friction damper (100) includes following structure substantially: the cylinder of hollow (CYLINDER) (110), piston (PISTON) (120), the 1st insertion groove (122), the 2nd insertion groove (124), the 1st friction rubber ring (126) and the 2nd friction rubber ring (128).Above-mentioned piston (120) carries out back and forth movement in above-mentioned cylinder (110); Above-mentioned the 1st insertion groove (122) is formed on the outer peripheral face of above-mentioned piston (120); Above-mentioned the 2nd insertion groove (124) is formed on above-mentioned the 1st insertion groove (122) and keeps on the position of a determining deviation; Above-mentioned the 1st friction rubber ring (126) and the 2nd rubber ring (128) that rubs is inserted in respectively in above-mentioned each insertion groove, rubs with the inner peripheral surface of above-mentioned cylinder (110).
So if above-mentioned water jacket (20) is vibrated, the piston (120) that makes above-mentioned friction damper (100) is along with the vibration of above-mentioned water jacket (20) is carried out back and forth movement in the inside of cylinder (110).At this moment, the frictional force F2's of the frictional force F1 of the 1st friction rubber ring (126) by being arranged on above-mentioned piston (120) outer peripheral face and the 2nd friction rubber ring (128) makes a concerted effort to play the effect that weakens vibration.
But when above-mentioned undue oscillation state enters the normal vibration state, and above-mentioned inside groove (30) need normally be rotated and carries out dehydration, and the excessive damping force of above-mentioned friction damper (100) has become to play vibrative reason on the contrary under the normal vibration state.
That is to say the frictional force of making a concerted effort to keep above-mentioned friction damper (100) of frictional force F2 of frictional force F1 and the 2nd friction rubber ring (128) by above-mentioned the 1st friction rubber ring (126); As shown in Figure 3, dehydration is after stroke begins, and the revolution that makes inside groove (30) is when undue oscillation state regional, in order to weaken the vibration of above-mentioned inside groove (30), the damping force (that is, frictional force) of above-mentioned friction damper (100) is increased, could reduce passing to the vibration force that makes water jacket (20); If but when entering normal vibration state regional along with the revolution increase of above-mentioned inside groove (30), because the damping force of above-mentioned friction damper (100) is excessive, make the power that passes to the vibration on the water jacket become big on the contrary, finally causes aggravating the vibration of above-mentioned water jacket (20).
So,,, then can make the power that under the normal vibration state, passes to water jacket (20) become big and cause producing vibration if increase the damping force of above-mentioned friction damper (100) in order to control excessive vibration; In order to weaken vibration,, bring difficulty then can for again the vibration under the control undue oscillation state if reduce damping force at the normal vibration state.
Summary of the invention
In order to overcome the above-mentioned shortcoming that prior art exists, the invention provides a kind of dual damping device of washing machine, the structure of the friction damper by improving washing machine makes it all have optimal damping force at the undue oscillation state of above-mentioned inside groove and the All Ranges of normal vibration state.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of dual damping device of washing machine comprises casing, water jacket, inside groove and damper, and casing forms the outward appearance of washing machine; Water jacket is arranged in the described casing; Inside groove can be rotatably set in the water jacket; Damper is arranged between casing and the water jacket, is used to weaken the transient state vibration and the normal condition vibration that pass on the water jacket; It is characterized in that described damper is dual damping device; Described damping device mainly comprises: the cylinder of hollow, piston, friction means, the 2nd weaken portion, buffer unit and jut; Described piston carries out back and forth movement in described cylinder; Described friction means is formed on the outer peripheral face of described piston, and the inner peripheral surface of friction means and described cylinder rubs and plays the attenuation that absorbs vibration; The described the 2nd weaken portion by a dual brake, shuttle back and forth the ring and friction part constitute, a described dual brake keeps a determining deviation to be formed on the terminal part of described piston, ring-type the described ring that shuttles back and forth becomes to be slidingly matched with the outer peripheral face of described piston between described brake, and described friction part is formed on the described outer peripheral face that encircles that shuttles back and forth the inner peripheral surface CONTACT WITH FRICTION with described cylinder; Described buffer unit is fixed on described each brake face vis-a-vis, is used to cushion described impact of shuttling back and forth between ring and brake; Described a plurality of jut is formed on the two sides of the ring that shuttles back and forth that joins with described buffer unit.
The dual damping device of aforesaid washing machine wherein in described two brakes, is formed on inboard brake and is the section difference face that the diameter than described piston end diminishes and forms.
The dual damping device of aforesaid washing machine wherein includes insertion groove and friction means at the described the 2nd friction part that weakens portion; Described insertion groove is formed on the outer peripheral face of the described ring that shuttles back and forth; Described friction means is inserted in the described insertion groove, the inner peripheral surface CONTACT WITH FRICTION of friction means and described cylinder.
The dual damping device of aforesaid washing machine is wherein formed by rubber at described friction means.
The dual damping device of aforesaid washing machine, the ring length of moving section between described brake of wherein shuttling back and forth be, when washing machine is carried out the vibration that makes described inside groove in the dehydration stroke and is in the normal condition vibration, is equivalent to the length of the range of movement of described piston.
The dual damping device of aforesaid washing machine, wherein buffer unit has ring-type, is formed by elastic material.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is vertical sectional schematic diagram of existing roller washing machine structure.
Fig. 2 is the sectional drawing of the friction damper of existing roller washing machine.
Fig. 3 is the coordinate curve (GRAPH) of vibration transfer power under normal vibration state and undue oscillation state and damping force relation.
Fig. 4 is vertical sectional drawing of dual damping device of the washing machine of the present invention the 1st embodiment.
Fig. 5 is the exploded perspective view that shuttles back and forth and encircle of the dual damping device of washing machine of the present invention.
Fig. 6 is vertical figure of dual damping device of the washing machine of the present invention the 2nd embodiment.
The number in the figure explanation:
200: friction damper 210: cylinder
220: 222: the 1 insertion grooves of piston
226: the 1 friction rubber rings 230: bar
232: brake ring flange 240: ring shuttles back and forth
248: the 2 friction rubber rings 250: buffering ring
The specific embodiment
In addition, below in the explanation, the main composition parts part same as the prior art in the dual damping device of all washing machines of the present invention, quote with Fig. 1 to Fig. 3 in the label that adopts.
As shown in Figure 4, the dual damping device (200) of washing machine of the present invention (below be called friction damper) includes following structure substantially: the cylinder of hollow (210), piston (220), the 1st weaken portion and the 2nd and weaken portion.Above-mentioned piston (220) can carry out back and forth movement in the inside of above-mentioned cylinder (210); Above-mentioned the 1st portion of weakening is formed on the outer peripheral face of above-mentioned piston (220); Above-mentioned the 2nd portion of weakening is arranged on the end of above-mentioned piston (220), can keep certain interval to carry out moving mutually with above-mentioned piston (220).
Further describe as follows: above-mentioned the 1st portion of weakening includes the 1st insertion groove (222) and the 1st friction rubber ring (226).Above-mentioned the 1st insertion groove (222) is recessed to form around the outer peripheral face of the terminal part of above-mentioned piston (220); Above-mentioned the 1st friction rubber ring (226) is inserted in above-mentioned the 1st insertion groove (222), and contact is on the inner peripheral surface of above-mentioned cylinder (210).
As shown in Figure 5, above-mentioned the 2nd portion of weakening includes bar (ROD) (230), brake ring flange (STOPPER FLANGER) (232) and the ring that shuttles back and forth (SHUTTLE RING) (240).Above-mentioned bar (230) is formed on the end of above-mentioned piston (220), and diameter is littler than above-mentioned piston (220), prolongs according to certain-length to form; Above-mentioned brake ring flange (232) is formed on the end of above-mentioned bar (230), and brake ring flange (232) forms diameter than the big disc-shape of above-mentioned bar (230); The above-mentioned ring (240) that shuttles back and forth is the ring-type of hollow, and above-mentioned hollow bulb is inserted on the above-mentioned bar, makes the ring (240) that shuttles back and forth freely to relatively move between the end of above-mentioned piston (220) and brake ring flange (232)
In addition, be formed with the 2nd insertion groove (244) in above-mentioned outer peripheral face peripheral recesses of shuttling back and forth ring (240); Be inserted with the 2nd friction rubber ring (248) in above-mentioned the 2nd insertion groove (244), above-mentioned the 2nd friction rubber ring (248) contact is on the inner peripheral surface of above-mentioned cylinder (210).
At this moment, the diameter that the internal diameter of the above-mentioned ring (240) that shuttles back and forth cans be compared to most above-mentioned bar (230) is big, can prevent that the above-mentioned ring (240) that shuttles back and forth is obstructed when mobile between the end of above-mentioned piston and brake ring flange.
Wherein, rubber ring (248) contacts with the inner peripheral surface of above-mentioned cylinder (210) and carries out fricting movement because above-mentioned the 1st friction rubber ring (226) and the 2nd rubs, preferably form, also can form by frictional force and other good material of ABRASION RESISTANCE by not only good coefficient of friction of ABRASION RESISTANCE but also big rubber material.
In addition, possesses the buffering ring (250) that ring-type is arranged at the terminal surface of above-mentioned piston (220) and the medial surface of brake ring flange (232), the impact that the medial surface that above-mentioned buffering ring (250) is used to relax the terminal surface of above-mentioned shuttle back and forth ring (240) and piston (220) and brake ring flange (232) brings when contacting.
In addition, as shown in Figure 5, the projection (246) of semi-spherical shape is formed around the two sides of the ring (240) that shuttles back and forth, make above-mentioned shuttle back and forth ring (240) and above-mentioned buffering ring (250) but the contact area minimum so that the impact noise minimum of above-mentioned ring (240) the contact generation when above-mentioned buffering ring (250) is gone up of shuttling back and forth.
In addition, the material of above-mentioned buffering ring (250) is rubber preferably, but so long as can play other material of cushioning effect and all can.
In addition, an end of an end of above-mentioned cylinder (210) and piston (220) is formed with ring (260), and above-mentioned ring (260) can be arranged on above-mentioned friction damper (200) between as shown in Figure 1 the water jacket (20) and casing (10).
In said structure, the siding-to-siding block length that the ring (240) that shuttles back and forth relatively moves to piston (220) is close (a+b) of distance (a) and distance (b); Above-mentioned distance (a) be from the buffering ring (250) that is fixed on above-mentioned piston (220) terminal surface to the distance of a side of above-mentioned buffering ring (250) ring (240) that shuttles back and forth vis-a-vis; Above-mentioned distance (b) be from the buffering ring (250) that is fixed on above-mentioned brake ring flange (232) medial surface to the distance of a side of above-mentioned buffering ring (250) ring (240) that shuttles back and forth vis-a-vis.
Wherein, the length of above-mentioned bar (230) makes the length of inside groove (30) above-mentioned piston (220) range of movement when normal condition is vibrated of washing machine among length of an interval degree (a+b) that the above-mentioned ring (240) that shuttles back and forth relatively moves to above-mentioned piston (220) and Fig. 1 identical.
So, the displacement of above-mentioned piston (220) is than the siding-to-siding block length that relatively moves (a+b) of the above-mentioned ring (240) that shuttles back and forth hour, the above-mentioned ring (240) that shuttles back and forth is fixed on certain position of above-mentioned cylinder (210) inner peripheral surface by above-mentioned the 2nd friction rubber ring (248), slide between the bar (230) of above-mentioned shuttle back and forth ring (240) and above-mentioned piston (220), at this moment go up and only produce the damping force F1 that is formed on the friction rubber ring of the 1st on the above-mentioned piston (220) (226) at above-mentioned friction damper (200).And when the displacement of above-mentioned piston (220) is bigger than the length of an interval degree (a+b) that relatively moves of the above-mentioned ring (240) that shuttles back and forth, the above-mentioned ring (240) that shuttles back and forth is contacted with the terminal surface of above-mentioned piston (220) or the medial surface of brake ring flange (232), and and above-mentioned piston (220) move together, at this moment above-mentioned friction damper (200) is gone up the making a concerted effort of damping force F2 of the damping force F1 that produces the 1st friction rubber ring (226) and the 2nd friction rubber ring (248).
Below, the effect of the dual damper (200) of the washing machine of the present invention the 1st embodiment with said structure is elaborated.
After the dehydration stroke of washing machine begins, make inside groove (30) (with reference to Fig. 1) when inactive state begins to rotate,, then make above-mentioned inside groove (30) enter the undue oscillation state of large amplitude if the revolution of above-mentioned inside groove (30) (with reference to Fig. 1) enters resonance zone.
At this moment, the vibration transfer of above-mentioned inside groove (30) is given water jacket (20), the vibration transfer of above-mentioned water jacket (20) is given friction damper of the present invention (200), make above-mentioned piston (220) according to above-mentioned water jacket (20)) amplitude carry out back and forth movement in the inside of cylinder (210), at this moment because above-mentioned inside groove (30) is in the undue oscillation state, relatively moving of the above-mentioned ring (240) that shuttles back and forth of the amplitude ratio of above-mentioned piston (220) is interval big.So, at the damping force of above-mentioned friction damper (200) generation F1 and F2 sum.
In addition, if along with above-mentioned resonance zone is broken away from the increase of revolution, the amplitude of above-mentioned inside groove (30) (with reference to Fig. 1) is diminished gradually enter the normal vibration state, so, owing to the amplitude of above-mentioned piston (220) is diminished, produce the damping force of F1 at above-mentioned friction damper (200).
Though in above-mentioned the 1st embodiment, the 1st portion of weakening is formed on the piston, make the 2nd portion of weakening that constitutes by bar and brake ring flange and the ring that shuttles back and forth be formed on the end of piston, but in the 2nd embodiment of the present invention, also above-mentioned the 2nd portion of weakening can be formed directly on the above-mentioned piston.
As shown in Figure 6, the dual damping device of the washing machine of the present invention the 2nd embodiment includes following structure substantially: the cylinder of hollow (310), piston (320), the 1st weaken portion and the 2nd and weaken portion.Above-mentioned piston (320) carries out back and forth movement in the inside of above-mentioned cylinder (310); Above-mentioned the 1st portion of weakening is formed on the outer peripheral face of above-mentioned piston (320); Above-mentioned the 2nd portion of weakening is arranged on the periphery of above-mentioned piston (320), can keep certain interval to carry out moving mutually with above-mentioned piston (320).
Further describe, above-mentioned the 1st portion of weakening includes the 1st insertion groove (322) and the 1st friction rubber ring (326).Above-mentioned the 1st insertion groove (322) is recessed to form the outer peripheral face at the terminal part of above-mentioned piston (320); Above-mentioned the 1st friction rubber ring (326) is inserted in above-mentioned the 1st insertion groove (322), and contact is on the inner peripheral surface of above-mentioned cylinder (310).
In addition, above-mentioned the 2nd portion of weakening includes a dual brake (332) and the ring (340) that shuttles back and forth.An above-mentioned dual brake (332) keeps a determining deviation to be arranged on the outer peripheral face of above-mentioned piston (320); The above-mentioned ring (340) that shuttles back and forth is the ring-type of hollow, above-mentioned hollow bulb is inserted on the outer peripheral face of the piston (320) between the above-mentioned brake (332), and the feasible ring (340) that shuttles back and forth can freely relatively move on the outer peripheral face of above-mentioned piston (320) between above-mentioned brake (332).
At this moment, the diameter that the internal diameter of the ring (240) that shuttles back and forth cans be compared to most above-mentioned piston (320) is big, can prevent that the above-mentioned ring (340) that shuttles back and forth is obstructed when mobile between above-mentioned brake (332).
In addition, be formed with the 2nd insertion groove (344) in above-mentioned outer peripheral face peripheral recesses of shuttling back and forth ring (340); Be inserted with the 2nd friction rubber ring (348) in above-mentioned the 2nd insertion groove (344), above-mentioned the 2nd friction rubber ring (348) contact is on the inner peripheral surface of above-mentioned cylinder (310).
The length of above-mentioned piston (320) range of movement was identical when wherein, the length between the above-mentioned brake (332) made the normal condition vibration of the inside groove (30) of above-mentioned washing machine among the length of an interval degree that the above-mentioned ring (340) that shuttles back and forth relatively moves to above-mentioned piston (320) (a '+b ') and Fig. 1.
In addition, possess the buffering ring (350) that ring-type is arranged at the medial surface of above-mentioned each brake (332), above-mentioned buffering ring (350) is used to relax the impact that above-mentioned shuttle back and forth ring (340) and brake (332) bring when contacting.
So, the displacement of above-mentioned piston (320) is than the siding-to-siding block length that relatively moves of the above-mentioned ring (340) that shuttles back and forth (a '+b ') hour, the above-mentioned ring (340) that shuttles back and forth is fixed on certain position of above-mentioned cylinder (310) inner peripheral surface by above-mentioned the 2nd friction rubber ring (348), above-mentioned shuttling back and forth carried out relative motion between ring (340) and the above-mentioned piston (320), at this moment only produces the damping force F1 ' of the 1st friction rubber ring (326) on above-mentioned friction damper (300).When the displacement of above-mentioned piston (320) is bigger than the length of an interval degree that relatively moves of the above-mentioned ring (340) that shuttles back and forth (a '+b '), the above-mentioned ring (340) that shuttles back and forth is contacted with above-mentioned brake (332), and and above-mentioned piston (320) move together, at this moment above-mentioned friction damper (300) is gone up the making a concerted effort of damping force F2 ' of the damping force F1 ' that produces the 1st friction rubber ring (326) and the 2nd friction rubber ring (348).
Below, because other structural elements or the effect of the dual damping device of the washing machine of the present invention the 2nd embodiment are identical with above-mentioned the 1st embodiment, omit detailed description thereof.
The effect of invention
The dual vibration damper of washing machine provided by the invention can bring following effect.
In the dual vibration damper of washing machine of the present invention, when above-mentioned inside groove is in the undue oscillation state, Produce the damping force of the degree of making a concerted effort of F1 and F2 at above-mentioned friction damper; When above-mentioned inside groove just is in During normal vibrational state, only produce the damping force of F1 degree. As seen from Figure 3 because when the undue oscillation state Have big damping force, shaking force specific damping power hour can weaken the vibration that passes to water jacket more; Have little damping force during the normal vibration state, can weaken passing to water jacket when shaking force specific damping power is big Vibration, so can make the vibration minimum that is delivered to casing.
Claims (6)
1, a kind of dual damping device of washing machine comprises casing, water jacket, inside groove and damper, and casing forms the outward appearance of washing machine; Water jacket is arranged in the described casing; Inside groove can be rotatably set in the water jacket; Damper is arranged between casing and the water jacket, is used to weaken the transient state vibration and the normal condition vibration that pass on the water jacket; It is characterized in that described damper is dual damping device;
Described damping device mainly comprises: the cylinder of hollow, piston, friction means, the 2nd weaken portion, buffer unit and jut;
Described piston carries out back and forth movement in described cylinder;
Described friction means is formed on the outer peripheral face of described piston, and the inner peripheral surface of friction means and described cylinder rubs and plays the attenuation that absorbs vibration;
The described the 2nd weaken portion by a dual brake, shuttle back and forth the ring and friction part constitute, a described dual brake keeps a determining deviation to be formed on the terminal part of described piston, ring-type the described ring that shuttles back and forth becomes to be slidingly matched with the outer peripheral face of described piston between described brake, and described friction part is formed on the described outer peripheral face that encircles that shuttles back and forth the inner peripheral surface CONTACT WITH FRICTION with described cylinder;
Described buffer unit is fixed on described each brake face vis-a-vis, is used to cushion described impact of shuttling back and forth between ring and brake;
Described a plurality of jut is formed on the two sides of the ring that shuttles back and forth that joins with described buffer unit.
2, the dual damping device of washing machine according to claim 1 is characterized in that in described two brakes, is formed on inboard brake and is the section difference face that the diameter than described piston end diminishes and forms.
3, the dual damping device of washing machine according to claim 1 is characterized in that including insertion groove and friction means at the described the 2nd friction part that weakens portion; Described insertion groove is formed on the outer peripheral face of the described ring that shuttles back and forth; Described friction means is inserted in the described insertion groove, the inner peripheral surface CONTACT WITH FRICTION of friction means and described cylinder.
4, the dual damping device of washing machine according to claim 1 is characterized in that being formed by rubber at described friction means.
5, the dual damping device of washing machine according to claim 1, it is characterized in that the described ring length of moving section between described brake of shuttling back and forth is, when washing machine is carried out the vibration that makes described inside groove in the dehydration stroke and is in the normal condition vibration, be equivalent to the length of the range of movement of described piston.
6, the dual damping device of washing machine according to claim 1 is characterized in that described buffer unit has ring-type, is formed by elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020282 CN1730784A (en) | 2004-08-06 | 2004-08-06 | Dual vibration damper for washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020282 CN1730784A (en) | 2004-08-06 | 2004-08-06 | Dual vibration damper for washing machine |
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| Publication Number | Publication Date |
|---|---|
| CN1730784A true CN1730784A (en) | 2006-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410020282 Pending CN1730784A (en) | 2004-08-06 | 2004-08-06 | Dual vibration damper for washing machine |
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| CN (1) | CN1730784A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016173533A1 (en) * | 2015-04-30 | 2016-11-03 | 青岛海尔洗衣机有限公司 | Controllable damping shock absorber and washing machine |
| CN106574421A (en) * | 2014-06-11 | 2017-04-19 | Lg电子株式会社 | Washing machine |
| CN113677845A (en) * | 2019-05-27 | 2021-11-19 | 海信（山东）冰箱有限公司 | Washing machine and fastener applied to same |
| WO2022121292A1 (en) * | 2020-12-09 | 2022-06-16 | 青岛海尔洗衣机有限公司 | Washing machine |
-
2004
- 2004-08-06 CN CN 200410020282 patent/CN1730784A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574421A (en) * | 2014-06-11 | 2017-04-19 | Lg电子株式会社 | Washing machine |
| WO2016173533A1 (en) * | 2015-04-30 | 2016-11-03 | 青岛海尔洗衣机有限公司 | Controllable damping shock absorber and washing machine |
| JP2018515725A (en) * | 2015-04-30 | 2018-06-14 | 青島海爾洗衣机有限公司ＱｉｎｇＤａｏ Ｈａｉｅｒ Ｗａｓｈｉｎｇ Ｍａｃｈｉｎｅ Ｃｏ．，Ｌｔｄ． | Damping variable shock absorber and washing machine |
| CN113677845A (en) * | 2019-05-27 | 2021-11-19 | 海信（山东）冰箱有限公司 | Washing machine and fastener applied to same |
| WO2022121292A1 (en) * | 2020-12-09 | 2022-06-16 | 青岛海尔洗衣机有限公司 | Washing machine |
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