CN1317442C - Shock absorber for washing machine - Google Patents
Shock absorber for washing machine Download PDFInfo
- Publication number
- CN1317442C CN1317442C CNB2004100458849A CN200410045884A CN1317442C CN 1317442 C CN1317442 C CN 1317442C CN B2004100458849 A CNB2004100458849 A CN B2004100458849A CN 200410045884 A CN200410045884 A CN 200410045884A CN 1317442 C CN1317442 C CN 1317442C
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- China
- Prior art keywords
- shock absorber
- coupling part
- cylinder
- vibration damping
- slide bar
- 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.)
- Expired - Fee Related
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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
- D06F37/22—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 horizontal 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
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
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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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/12—Casings; Tubs
- D06F39/125—Supporting arrangements for the casing, e.g. rollers or legs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
- F16F7/09—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other in dampers of the cylinder-and-piston type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
Disclosed is a damper for a washing machine including a cylinder, a rod of which one end is inserted in the cylinder, a sliding rod integrally formed on a proximal end of the rod, a damping part disposed around the sliding rod to perform a damping operation, the damping part having a coupling part contracting/expanding in a radial direction, a seating portion formed on the sliding rode, the coupling part being selectively located on the seating portion, and a magnet formed on the coupling part.
Description
Technical field
The present invention relates to a kind of damper for washing machine, specifically, relate to and a kind ofly apply the shock absorber of multistage damping force, thereby suitably weaken the big and small vibration of washing machine, make that washing machine can stable operation under the state of low noise according to the vibratory output that produces in the washing machine.In addition, the present invention relates to a kind of multistage shock absorber that is used for washing machine, this shock absorber is designed to by the definite control of expectant control system realization to damping force, thereby more can weaken effectively in vibration violent and that the stable vibration stage produces.
Background technology
In general, washing machine can be divided into cylinder type, agitating type and impeller type according to the mode of laundry.Particularly, drum-type washing machine has a rotatable cylinder, and the cylinder inner periphery has the element of a projection, and this element descends and the generation impact clothing that will wash along inner periphery in cylinder, thereby realizes the function of laundry.
Because drum-type washing machine can reduce the infringement to clothing, and water saving, so it is widely used as washing machine in recent years.
Impeller type washing machine comprises the cylinder at a vertical opened type top and one and is installed in the impeller device at the end in the cylinder.Impeller type washing machine is realized the function of doing washing by the spinning force of impeller device or cylinder.The agitating type washing machine by the cylinder of a vertical open top and one according to mixer configuration in the cylinder the inside.It realizes the function of doing washing by the flow force of the rotation generation of agitator.
Washing machine can also have different mode classifications.For example, according to the mode of putting into of clothing, washing machine can be divided into that formula is put in the front, formula is put at the top and formula is put in the side.It is exactly that clothing is put into washing machine from the front of washing machine that formula is put in the front, and the top is put into formula and is meant that clothing puts into from the top of washing machine, and the side is put into formula and is meant that clothing puts into washing machine from the side of washing machine.
No matter be the mode of laundry or the mode of putting into of clothing, all washing machines all have a motor and one that motor-driven rotary active part is arranged.When movable part was rotated by motor-driven, washing machine will produce vibration, thereby caused noise and misoperation.For example, the vibration of washing machine can cause such as various problems such as activity phenomenon and rotating speed reductions.The displacement phenomenon has taken place with regard to being meant a washing machine that installs and fixes in so-called activity phenomenon, and the rotating speed reduction is meant that the rotating speed of movable part is owing to the friction between movable part and the fixed part reduces.Therefore, the washing machine manufacturer wishes to invent a kind of method and system and reduces the vibration that produces in the washing machine operation engineering.Dither effect is eliminated in the traditional washing machine employing fixedly one-level shock absorber of damping constant.That is to say,, all use same damping constant to be applied to movable part no matter what running status washing machine is.Yet,, just not too desirable with fixing damping constant so because the vibration that movable part produced is different along with the different running statuses of washing machine.
Or rather, the running of washing machine is that a burst of small vibration and a burst of big vibration hocket.For example, the different rotating speed stages as in the starting stage of dehydration, the rotating speed of movable part is inconsistent, this make to produce relatively large vibration.And in the stage of stabilization of speed, promptly the rotating speed of movable part is unanimous on the whole, will produce less vibration.
In order to address the above problem, a kind of two-stage shock absorber has been proposed, this shock absorber can reduce vibration according to the tangible amount of vibration.Yet, because this two-stage shock absorber is implemented weakening according to the one dimension vibratory output, so vibration can not thoroughly be eliminated.
In addition, when vibratory output is linear change, the damping constant of shock absorber and nonlinear change.Since because damping constant is to change according to the pre-arranged procedure, so the variation that movable part produces vibration just can not in time eliminate.Also have,, just be difficult to control according to a conventional method washing machine because the definite control method of damping constant is not provided.
Summary of the invention
Therefore, this invention is devoted to a kind of shock absorber washing machine, that can overcome one or more problem that limitation and defective owing to correlation technique cause basically that is used for.
An object of the present invention is to provide a kind of can definitely control by mode of operation to washing machine, thus the shock absorber of stable operation.
Another object of the present invention provides a kind of shock absorber, the pattern that it can be preset according to the user, and certainty weakens the vibration that produces in the washing machine.
Other advantage, target and characteristic of the present invention, a part will illustrate below that another part by reading hereinafter or study from the practice of the present invention, will be conspicuous to those skilled in the art.Target of the present invention and other advantages can realize and reach by the structure that particularly points out in specification and the claim and accompanying drawing.
As implementing herein and generalized description, in order to realize these targets and other advantage,, provide a kind of shock absorber that is used for washing machine according to purpose of the present invention, this shock absorber comprises: a cylinder element; An end is inserted into the rod member of cylinder; A slide bar that is integrally formed on the rod member near-end; One is arranged on around the slide bar so that carry out the vibration damping portion of vibration damping operation, and this vibration damping portion comprises one at the coupling part of shrink/expanded in the radial direction; A base portion that is formed on the slide bar, coupling part can optionally be positioned on the base portion; And magnet that is formed on the coupling part.
According to an aspect of the present invention, provide a kind of shock absorber that is used for washing machine, comprising: a cylinder; An end is inserted into the rod member of cylinder; A slide bar that is integrally formed on the rod member near-end; Hollow outer parts that have than large diameter; A coupling part that limits by the magnet that is inserted in the hollow outer parts, when electromagnetic force formed, this coupling part was coupled on the slide bar; And a cushion blocking that is formed on the hollow outer parts excircle, this cushion blocking is realized the vibration damping operation by the friction with inner periphery.
According to a further aspect in the invention, provide a kind of shock absorber that is used for washing machine, comprising: a cylinder; One one end is inserted into the rod member in the cylinder; A slide bar that is integrally formed on the rod member near-end; An electromagnet that is inserted in the slide bar; A vibration damping portion that is arranged on the slide bar excircle, when electromagnet was magnetized, this vibration damping portion just was fixed on the slide bar.
According to a further aspect in the invention, provide a kind of shock absorber that is used for washing machine, comprising: a cylinder; One one end is inserted into the rod member in the cylinder; One contacts with cylinder to carry out the vibration damping portion of vibration damping operation; And one be formed in the cylinder and can optionally be fixed to coupling part on the rod member.
By the shock absorber among the present invention, washing machine can be realized low-noise operation.In addition, even when having high vibration to transmit between the movable part, shock absorber is not fragile yet.
By the vibration damping operation of the shock absorber that the front proposed, the vibration that washing machine produces can promptly weaken, and realizes low-noise operation.
In addition, can avoid because the shock absorber that instantaneous high vibration causes damages.
For the present invention, no matter be that the front is summarized, or the back will describe in detail, all be exemplary and explain character, and attempt to provide the present invention further specify as claimed in claim.
Description of drawings
Accompanying drawing has diagrammatically illustrated embodiments of the invention, and is used from specification one and explains principle of the present invention, and the purpose of accompanying drawing is to provide further to be understood the present invention, and incorporate into, as a part of the present invention.In these accompanying drawings:
Fig. 1 is the perspective view that rolls the pattern washing machine, has wherein used the shock absorber according to first embodiment of the invention;
Fig. 2 is the cutaway view of the shock absorber of the first embodiment of the present invention;
Fig. 3 is the cutaway view along Fig. 2 center line A-A ';
Fig. 4 is the cutaway view according to the shock absorber of first embodiment, illustrated that diagrammatically washing machine weakens the vibration damping operation of cylinder transient vibration when initial dehydrating operations;
Fig. 5 is the cutaway view according to the shock absorber of first embodiment, has illustrated that diagrammatically washing machine weakens the vibration damping operation of the less vibration of cylinder when stablizing dehydrating operations;
Fig. 6 is the cutaway view of the shock absorber of second embodiment of the invention;
Fig. 7 is the cutaway view along Fig. 6 center line B-B ';
Fig. 8 is the cutaway view according to the shock absorber of second embodiment, illustrated that diagrammatically washing machine weakens the vibration damping operation of cylinder additional vibratory when initial revolving process; And
Fig. 9 is the cutaway view according to the shock absorber of second embodiment, has illustrated that diagrammatically washing machine eliminates the vibration damping operation of cylinder additional vibratory when stablizing revolving process;
The specific embodiment
Now will be in detail with reference to the preferred embodiments of the present invention, its example is shown in the drawings.In possible place, employed label is all represented same or analogous part among the figure in all figure.
All types of shock absorbers all illustrate as example with drum-type washing machine among the present invention.Yet the present invention is not limited only to drum-type washing machine.It can be applied to the washing machine of vibrative distinct device or other types.
First embodiment
Fig. 1 has shown the perspective view of a drum-type washing machine, and it has adopted the shock absorber of first embodiment of the invention.
As shown in the figure, drum-type washing machine comprises that 3, one of washing machine shells are arranged on 1, one in the bucket that stores water in the shell 3 and are arranged on cylinder 2 and drive motors 10 that is contained in bucket 1 back that being used in the bucket 1 adorned clothing, is used for swing roller 2.
Hereinafter, the operating process of drum-type washing machine will be introduced.
The revolving force of drive motors 10 sends cylinder 2 to by belt 11.When cylinder 2 rotations, the clothing of the inside is together along with cylinder 2 rotations.Like this, because the rotating speed of cylinder 2 is relatively low, clothing rises by the rotation of cylinder, and the gravity by self falls again, and collides with the water generates in the bucket 1.By the impact force between clothing and the water, just be removed attached to the spot above the clothing and other dirts.Although in the present embodiment, the driving force of drive motors 10 is to be sent to cylinder by belt 11, and drive motors 10 also can be designed to directly drive cylinder 2.Even, clearly also can produce vibration owing to the rotation of cylinder 2 when the drive motors cylinder 2 of directly ining succession.
In addition, this washing machine comprises that also one is arranged on bucket and is used on 1 excircle from each to the weight 4 of correcting bucket 1 center of gravity; A spring 5, this both ends of the spring are connecting shell 3 and bucket 1 respectively, are used for alleviating the vibration that is produced by bucket 1 and cylinder 2; Also have in succession the respectively shock absorber 8 of shell 3 and bucket 1 of two ends, be used for weakening the vibration that produces in the bucket 1.
Weight 4 is used for adjusting the center of gravity of bucket 1, thereby fundamentally weakens because the vibration that barrel 1 centre-of gravity shift produces.
The vibration that is produced by bucket 1 operation is at first absorbed by spring 5, further weakens by shock absorber 8 then.As a result, the vibration that is produced by bucket 1 operation is eliminated soon.
In detail, shock absorber comprises a cylinder 161, and cylinder one end is fixed on the bucket 1; Also have a rod member 162, rod member one end is fixed on the shell 3, and is inserted in the cylinder 161.Certainly, this shock absorber also can be designed to rod member 162 be connected in the bucket 1 on and cylinder is connected on the shell 3.
When describing the operation of shock absorber 8, between the rod member 162 in cylinder 161 and insertion cylinder, a cushion blocking is arranged, it contacts with cylinder inner wall.The vibration that produces when bucket 1 is sent to cylinder 161, makes when cylinder 161 and rod member 162 are mobile differently in a longitudinal direction, just can realize vibration-damping function by the inwall of cylinder 161 and the frictional force between the cushion blocking (seeing the label 170 among Fig. 2).
The profile and the structure of shock absorber will be described below.
Fig. 2 is the cutaway view of the shock absorber of first embodiment, and Fig. 3 is the cutaway view of the line A-A ' in Fig. 2.
As shown in FIG., shock absorber 8 comprises a hollow cylinder 161; A rod member 162 that has an end to insert cylinder 161 the insides; The slide bar 163 that one one end and rod member 162 fuse; An electromagnet 166 that is arranged on the slide bar 163; A coil 167 that is wrapped on the electromagnet 166; A slidably vibration damping portion 168 that is arranged on slide bar 163 outer surfaces, when electromagnet 166 produced electromagnetic force, this vibration damping portion can optionally be fixed on the slide bar 163.
The other end in vibration damping portion 168 is a spring 173, is used for supporting mutually vibration damping portion 168 and slide bar 163.
Promptly, vibration damping portion 168 comprises that an external component 169 with relatively large internal diameter and one insert in the external component 169, and when electromagnet 166 is magnetized, shrink so that be installed in coupling part 170 in the slide bar 163, and outer surface that is formed on external component 169 and by and the inner periphery of cylinder 161 between fricting movement produce the cushion blocking 172 of damping force.Coupling part 170 is made up of two parts, and each part all is semicircular protruding top and concave bottom.Coupling part 170 is made it produce reaction to electromagnet 166 by constituting such as magnetic materials such as iron.
When electromagnet 166 was magnetized, coupling part 170 was shrinking in the radial direction.Especially, after electromagnet 166 is by demagnetization, expanding in the radial direction in order to make coupling part 170, two parts of coupling part 170 are connected with each other by elastic component 171.Elastic component 171 can be made of spring or synthetic resin.
For electromagnet 166 is inserted in the slide bar 163, slide bar 163 is provided with an electromagnet insertion portion 164.Electromagnet insertion portion 164 is provided with base portion 165 at its top and bottom, and this makes coupling part 170 when mobile, can be inserted in the slide bar 163 under the electromagnetic force effect of electromagnet 166.That is, base portion 165 forms according to two of coupling part 170 parts, so that the electromagnetic force effect that coupling part 170 can electromagnet 166 thereon on the throne forms the surface contact when shrinking down.
Hereinafter will introduce the operating process of shock absorber noted earlier.
Fig. 4 has diagrammatically illustrated washing machine when initial dehydrating operations, is the vibration damping process of the transient vibration of eliminating cylinder.Fig. 5 then is a washing machine after dehydrating operations is stable, eliminates the vibration damping process of the less vibration of cylinder.
At first see Fig. 4, shock absorber 8 is designed to can produce big friction damping power when producing the initial dehydrating operations of washing machine of transient vibration.That is, after electromagnet 166 logical powering on, cylinder 2 rotations make water separate with clothing.In the starting stage of dehydration, cylinder 2 can produce excessive vibration.The vibration that produces is applied on the shock absorber 8, so rod member 162 has different relatively moving in the horizontal direction with cylinder 161.Be linked to be the state of an integral body at slide bar 163 and rod member 162, so slide bar 163 has identical moving with rod member 162.
In addition, rod member 162 puts on power in the vibration damping portion 168 by spring 173.Under the effect of vibration damping portion 168 at power, to aim at electromagnet 166 when mobile in vertical direction, coupling part 170 moves towards the direction of electromagnet 166 under the effect of the electromagnetic force of electromagnet 166, makes coupling part 170 be installed on the base portion 165.At this moment, the opposite end of coupling part 170 is located in the vibration damping portion 168.
As a result, slide bar 163 and vibration damping portion 168 coupling part 170 among inserting them is done as a whole moving.
In this state, do linearly when mobile with respect to cylinder 161, carry out vibration damping by the frictional force between the inner periphery of cushion blocking 172 and cylinder 161 when rod member 162.That is, the excessive vibration of washing machine generation can weaken fully by the frictional force that the contact of the surface between cushion blocking 172 and the cylinder 161 produces.Arrow among the figure has been represented relatively moving between cushion blocking 172 and the cylinder 161.
With reference to Fig. 5, when washing machine was stablized dehydrating operations, cylinder 2 stable rotations only can produce less vibration, and therefore, the frictional force between the inner periphery of cylinder 161 and the cushion blocking 172 can reduce.So, the dump on the electromagnet 166, electromagnet 166 demagnetizations.As a result, because the elastic force of elastic component 171 makes the diameter of coupling part 170 increase.Coupling part 170 breaks away from from base portion 165, makes can move freely between slide bar 163 and the vibration damping portion 168.
As a result, the frictional force between the compression of the repetition of the spring 173 by being arranged on vibration damping portion 168 both sides/elongation operation and other elements has just realized vibration damping.That is, be the vibration that weakens washing machine by shock absorber 8 less damping forces.Arrow among the figure has been represented the motion of slide bar 163 and spring 173.
Second embodiment
Fig. 6,7 and 8 has diagrammatically illustrated the second type shock absorber among the present invention.That is, Fig. 6 is the cutaway view of the second embodiment shock absorber, and Fig. 7 is the cutaway view of the line B-B ' in Fig. 6.
The shock absorber 8 of this embodiment comprises: the cylinder 261 of a hollow; One has an end to be inserted into rod member 262 in the cylinder 261; A slide bar 263 that is integrally formed in an end of rod member 262; One has the hollow outer parts 269 than large diameter; Coupling part 270 in insertion slide bar 263, this coupling part shrinks under the effect of magnetic force; And a cushion blocking 272 that is arranged on external component 269 excircles, produce frictional force between the inner periphery of this cushion blocking and cylinder 261, thereby produce damping force.External component 269 and coupling part 270, cushion blocking 272 can be referred to as vibration damping portion 268 together.Electromagnet 275 is by coupling part 270 and be wrapped on coupling part 270 excircles wherein on one side or the coil 276 on both sides is constituted.At this, a base portion 264 is arranged on the slide bar 263,270 of coupling parts are thereon.
The shock absorber of second embodiment is except the structure difference of electromagnet, and is similar with first embodiment.The displacement that characteristics of the present invention are exactly coupling part 270 is to realize by the electromagnet that the coil 276 on the iron core that is wrapped in coupling part 270 qualifications is limited.
The operation of the shock absorber of second embodiment is as described below.
Fig. 8 is the cutaway view according to the second embodiment shock absorber, washing machine diagrammatically has been described when initial dehydrating operations, is the vibration damping process of the high vibration that weakens washing machine.Fig. 9 then is a washing machine after dehydration is stable, weakens the vibration damping process of the less vibration of washing machine.
At first see Fig. 8, at initial dehydrating operations, washing machine produces violent vibration, and power connection makes coupling part 270 attract each other under the effect of electromagnetic force and shrink owing to its both sides, and is installed on the base portion 264 of slide bar 263.Therefore slide bar 263 and cushion blocking 272 move together, like this, just can realize the vibration damping operation by the frictional force between the inner periphery of cushion blocking 272 and cylinder 261.The operation that it is detailed and first embodiment are similar.
With reference to Fig. 9, when washing machine is stablized dehydrating operations, only produce less vibration, external power source cuts off, and eliminates electromagnetic force.As a result, because the elastic force of elastic component 271 makes coupling part 270 expand in the radial direction, and is separated from base portion 264.Thus, can move mutually between slide bar 263 and the vibration damping portion 268.
As a result, compression/elongation of the repetition of the spring 273 by supporting vibration damping portion 268 operate and other elements between frictional force, just realized vibration-damping function.
As mentioned above, the shock absorber among the present invention can weaken washing machine at the high vibration that initial dehydrating operations produces definitely according to the controlled condition that provides in the invention, also can be reduced in simultaneously and stablize the less vibration that dehydrating operations produces.Thereby realize the washing machine of low vibration/low noise.
Especially because damping force according to the different operating state of washing machine difference, the noise of washing machine and the vibration can further reduce.
To those skilled in the art, clearly, can carry out different modifications and change in the present invention.Therefore, the invention is intended to cover the present invention all modification and change, as long as they drop within the scope of claims and equal body.
Claims (22)
1. damper for washing machine comprises:
A cylinder;
One has an end to be inserted into rod member in the cylinder;
A slide bar that is integrally formed in the rod member near-end;
One around the slide bar setting carrying out the vibration damping portion of vibration damping operation, this vibration damping portion comprises one at the coupling part of shrink/expanded in the radial direction;
A base portion that is formed on the slide bar, coupling part can optionally be positioned on this base portion; With
A magnet that is formed on coupling part and/or the base portion.
2. shock absorber as claimed in claim 1 also comprises first and second springs on the vibration damping portion both sides that are placed in.
3. shock absorber as claimed in claim 1, wherein vibration damping portion comprises:
The hollow outer parts that coupling part is placed in one;
Cushion blocking on the excircle of an external component that is formed on hollow, this cushion blocking contacts with cylinder and produces frictional force.
4. shock absorber as claimed in claim 1, wherein coupling part forms semicircle.
5. shock absorber as claimed in claim 1, wherein coupling part comprises two symmetrical parts, these two parts link together with an elastic component.
6. shock absorber as claimed in claim 1, wherein magnet is formed on the base portion inboard.
7. shock absorber as claimed in claim 1, wherein magnet is an electromagnet.
8. shock absorber as claimed in claim 1, wherein magnet comprises that is wrapped in a coupling part coil on every side, coupling part plays the effect of iron core.
9. shock absorber as claimed in claim 1, wherein rod member and slide bar form as one.
10. damper for washing machine comprises:
A cylinder;
One has an end to be inserted into rod member in the cylinder;
A slide bar that is integrally formed on the rod member near-end;
The hollow outer parts that internal diameter is bigger;
A coupling part that limits by the magnet that is inserted among the hollow outer parts, when electromagnetic force formed, this coupling part shrank diametrically and is coupled on the slide bar; With
Cushion blocking on excircle that is formed on the hollow outer parts, this cushion blocking contacts with the cylinder inner periphery and carries out the vibration damping operation.
11. shock absorber as claimed in claim 10, wherein coupling part can optionally insert in the groove of slide bar.
12. shock absorber as claimed in claim 10, wherein coupling part comprises two symmetrically arranged parts.
13. shock absorber as claimed in claim 10, wherein magnet is electromagnet, and externally under the effect of electric power, this electromagnet is magnetized.
14. a damper for washing machine comprises:
A cylinder;
One has an end to be inserted into rod member in the cylinder;
A slide bar that is integrally formed on the rod member near-end;
An electromagnet that is inserted in the slide bar; With
Vibration damping portion on excircle that is arranged on slide bar, this vibration damping portion comprises coupling part, when electromagnet was magnetized, described coupling part shrank diametrically and is fixed on the slide bar.
15. shock absorber as claimed in claim 14, also comprise an excircle that is formed on vibration damping portion, with the contacted cushion blocking of excircle of cylinder.
16. shock absorber as claimed in claim 14, wherein the diameter of slide bar is littler than the diameter of rod member.
17. shock absorber as claimed in claim 14 also comprises a spring that is formed at least one side of vibration damping portion, is used for supporting this vibration damping portion.
18. a damper for washing machine comprises:
A cylinder;
One has an end to be inserted into rod member in the cylinder;
One contacts with cylinder to carry out the vibration damping portion of vibration damping operation; With
One is formed on the coupling part that can optionally be fixed in the cylinder on the rod member.
19. shock absorber as claimed in claim 18 also comprises a cushion blocking on the excircle that is formed on vibration damping portion.
20. shock absorber as claimed in claim 18, wherein coupling part is made up of magnetic material, so that move under the magnetive attraction of magnet.
21. shock absorber as claimed in claim 18, wherein coupling part is made up of a plurality of parts, and one of them is an electromagnet at least.
22. shock absorber as claimed in claim 18, wherein coupling part is made up of magnetic material, comprises the magnet that is arranged on the rod member precalculated position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR0031764/2003 | 2003-05-20 | ||
| KR10-2003-0031764A KR100484663B1 (en) | 2003-05-20 | 2003-05-20 | The damper structure of drum washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1550608A CN1550608A (en) | 2004-12-01 |
| CN1317442C true CN1317442C (en) | 2007-05-23 |
Family
ID=33448166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100458849A Expired - Fee Related CN1317442C (en) | 2003-05-20 | 2004-05-20 | Shock absorber for washing machine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20040231373A1 (en) |
| KR (1) | KR100484663B1 (en) |
| CN (1) | CN1317442C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4712794B2 (en) * | 2004-03-25 | 2011-06-29 | ロード・コーポレーション | Rotating tub washing machine dual damper system |
| DE102005032499B4 (en) * | 2004-07-13 | 2009-10-22 | Lg Electronics Inc. | Damper for vibration damping and thus equipped washing machine |
| US7369296B2 (en) * | 2004-09-27 | 2008-05-06 | Idc, Llc | Device and method for modifying actuation voltage thresholds of a deformable membrane in an interferometric modulator |
| KR20150054163A (en) * | 2013-11-11 | 2015-05-20 | 동부대우전자 주식회사 | Suspension for washing machine and washing machine with the same |
| KR20150075676A (en) * | 2013-12-26 | 2015-07-06 | 동부대우전자 주식회사 | Suspension for full automatic washiing machine |
| CN106702674A (en) * | 2015-07-31 | 2017-05-24 | 青岛海尔洗衣机有限公司 | Vibration detection device of washing machine |
| CN105155215B (en) * | 2015-09-25 | 2017-09-01 | 安徽工程大学 | A kind of washing machine spring assembly device with spring pad under spline dentation |
| DE102019215555A1 (en) * | 2019-10-10 | 2021-04-15 | Zf Friedrichshafen Ag | Throttle point for a vibration damper |
| WO2023249245A1 (en) * | 2022-06-21 | 2023-12-28 | 삼성전자 주식회사 | Washing machine having damper for attenuating vibration of tub |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001027375A1 (en) * | 1999-10-14 | 2001-04-19 | Suspa Holding Gmbh | Damper |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4955467A (en) * | 1987-11-10 | 1990-09-11 | Fluor Corporation | Energy damping device |
| US6974000B2 (en) * | 2002-02-20 | 2005-12-13 | Lord Corporation | System and method for limiting vibration in an apparatus during a loss of power |
-
2003
- 2003-05-20 KR KR10-2003-0031764A patent/KR100484663B1/en not_active IP Right Cessation
-
2004
- 2004-04-21 US US10/828,211 patent/US20040231373A1/en not_active Abandoned
- 2004-05-20 CN CNB2004100458849A patent/CN1317442C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001027375A1 (en) * | 1999-10-14 | 2001-04-19 | Suspa Holding Gmbh | Damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1550608A (en) | 2004-12-01 |
| KR20040099696A (en) | 2004-12-02 |
| KR100484663B1 (en) | 2005-04-20 |
| US20040231373A1 (en) | 2004-11-25 |
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