CN1721725A - Damper for damping vibration and washing machine having the same - Google Patents
Damper for damping vibration and washing machine having the same Download PDFInfo
- Publication number
- CN1721725A CN1721725A CNA2005100833764A CN200510083376A CN1721725A CN 1721725 A CN1721725 A CN 1721725A CN A2005100833764 A CNA2005100833764 A CN A2005100833764A CN 200510083376 A CN200510083376 A CN 200510083376A CN 1721725 A CN1721725 A CN 1721725A
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- China
- Prior art keywords
- vibration damper
- pressure member
- pressure
- cylindrical shell
- friction
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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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/48—Preventing or reducing imbalance or noise
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/16—Imbalance
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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
- D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
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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
Abstract
A damper for damping vibration and a washing machine having the same are disclosed. The damper includes a damper cylinder; a shaft inserted into the damper cylinder through one end of the damper cylinder, and reciprocating in the lengthwise direction of the damper cylinder; and a friction member provided on the shaft for damping vibration generated by friction with the inner wall of the damper cylinder, and moving vertically to the lengthwise direction of the damper cylinder. The damper adjusts damping force thereof according to vibrated states of an object to be vibrated, and has an improved vibration-damping effect.
Description
The application requires Korean Patent Application No. 10-2004-0054423, the 10-2004-0054424 of submission on July 13rd, 2004 and the rights and interests of 10-2004-0054425, incorporates its full content at this into by reference.
Technical field
The present invention relates to a kind of vibration damper that shakes that is used to decay and be particularly related to the adjustable vibration damper of a kind of its damping force, and the washing machine that this vibration damper is housed.
Background technique
Usually, washing machine by the under-filled water in steel ladle and washing agent, with clothing be placed into be installed on the cylinder in this steel ladle and this cylinder rotated wash, rinsing and dehydrating operations.
This washing machine is a kind of device that utilizes suitable washing agent and mechanical pressure to remove the clothing dirt.
Therefore, this washing machine generally includes: casing, and it forms outward appearance; Outer steel ladle, it is arranged in the casing and stores wash water; And interior steel ladle, it can be rotatably set in the outer steel ladle and holds clothing.
Especially, the washing machine of the running shaft of interior steel ladle and ground level of approximation is called as roller washing machine.
With reference to figure 1, roller washing machine is a kind of under washing agent, wash water and clothing are placed on condition in the cylinder that keeps flatly installing with bottom of shell, removes the device of clothes dirt by the driving force rotating drum that utilizes motor.Roller washing machine can minimize the entanglement of clothing and to the damage of clothing, consume a spot of wash water and have to clap and wash and wash by rubbing with the hands effect.
More particularly, roller washing machine comprises: casing 10, and it forms outward appearance; Steel ladle 20, it is arranged in the casing 10; And cylinder 30, it can be rotatably set in the steel ladle 20.
Here, be used for the opening that clothing is placed into casing 10 being passed the front surface of casing 10 and forming, and the door 11 that is used to open and close this opening is installed in this opening.
Be used to make the whirligig 40 of cylinder 30 rotations, motor for example is installed in the rear portion of steel ladle 20.
Steel ladle 20 by being used to connect casing 10 the top and the suspension spring 50 on the top of steel ladle 20 flatly be installed in the casing 10, the vibration damper 60 that is used to connect the bottom of the bottom of casing 10 and steel ladle 20 is installed in the bottom of casing 10.
Here, friction member reduces the vibration of steel ladle 20 by rubbing with the vibration damper cylindrical shell.
Above-mentioned roller washing machine order or selectively finish washing, rinsing and dehydrating operations, thereby washing clothes.
When the dehydrating operations of roller washing machine began, cylinder 30 passed through whirligig 40 with high speed rotating, thus the dehydration clothing.
In the starting stage of dehydrating operations, that is, when whirligig 40 and cylinder 30 initial drivings, steel ladle 20 undue oscillation (hereinafter referred to as " undue oscillation state ").
Along with the rotational speed of whirligig 40 and cylinder 30 little by little increases, the vibration of steel ladle 20 little by little reduces.
Thereafter, when whirligig 40 and cylinder 30 reached normal rotational speed, the vibration of steel ladle 20 reduced greatly than the starting stage of dehydrating operations, and stabilization is to reach the normal vibration state.
The vibration of axle by steel ladle 20 of vibration damper 60 moves back and forth at the longitudinal direction of vibration damper cylindrical shell in the vibration damper cylindrical shell, and friction member is with the moving back and forth of friction place, and rubs with the inwall of vibration damper cylindrical shell.
The vibration of steel ladle 20 is decayed by the frictional force between friction member and the vibration damper cylindrical shell.
Following with reference to the variation of Fig. 2 and Fig. 3 explanation along with the damping force of vibration damper, the relation between the vibratory output of steel ladle and the rotational speed of cylinder, and the relation between the rotational speed of vibration transfer power of vibration damper (hereinafter referred to as " TR power ") and cylinder.
Here, Fig. 2 is the variation of expression along with damping force, the plotted curve of the relation between the vibratory output of steel ladle and the rotational speed of cylinder.Fig. 3 is the variation of expression along with damping force, the plotted curve of the relation between the TR power of vibration damper and the rotational speed of cylinder.
With reference to Fig. 2, when the rotational speed of cylinder 30 during, be equipped with to have than the steel ladle 20 of the vibration damper of high damping force and the steel ladle 20 that has than the vibration damper of low damping force is housed and shown in the plotted curve of Fig. 2, vibrate less than the designated value in the starting stage of dehydrating operations (ω 1).The vibratory output of steel ladle 20 (that is, at the normal vibration state) behind the undue oscillation state is approximate identical, and irrelevant with the damping force of vibration damper.
In addition, with reference to Fig. 3, make motor and rotating amount (being the rotating amount of cylinder 30) increase to exceeding designated value (ω when continuing dehydrating operations
1) time, steel ladle 20 reaches the normal vibration state.
When steel ladle 20 at the normal vibration state of steel ladle 20 by having vibration damper than low damping force when supporting, remain and be lower than given extent by having TR power that vibration damper than low damping force is delivered to the main body of washing machine.On the other hand, when steel ladle 20 by having when supporting than the vibration damper of high damping force, TR power increases in time, therefore constantly increases vibration and noise.
Thereby in the undue oscillation state of steel ladle, that is, in the starting stage of dehydrating operations, the oscillator that has than high damping force is favourable for attenuation vibration and noise.Further, in the normal vibration state of steel ladle, the vibration damper that has than low damping force is favourable.
Therefore, need a kind of so improved vibration damper, be used for by utilizing damping force attenuation vibration effectively along with the extent of vibration variation of the object (for example steel ladle of washing machine) that is vibrated.
Summary of the invention
Therefore, the present invention aims to provide a kind of washing machine that is used for the vibration damper of attenuation vibration and this vibration damper is housed, and it can be avoided basically because the limitation of correlation technique and one or more problems that shortcoming causes.
The purpose of this invention is to provide a kind of vibration damper of the structure with minimized vibrations transmission and the washing machine that this vibration damper is housed.
Other advantages of the present invention, purpose and characteristics will partly be set forth in the following description, and for those of ordinary skills by examine that following description will partly become obviously, perhaps can know from the practice of the present invention.Purpose of the present invention and other advantages can realize by the structure that particularly points out in specification and claims and accompanying drawing and reach.
In order to achieve the above object with other advantage and according to purpose of the present invention, as specializing and generalized description, vibration damper comprises: the vibration damper cylindrical shell; Axle, its end that passes the vibration damper cylindrical shell inserts the vibration damper cylindrical shell, and moves back and forth at the longitudinal direction of vibration damper cylindrical shell; And friction member, it is arranged on the axle, is used for coming attenuation vibration by the interior wall friction with the vibration damper cylindrical shell, and moves perpendicular to the longitudinal direction of vibration damper cylindrical shell.
Preferably, axle can comprise the frictional force controlling device, and this frictional force controlling device is used for mobile friction member with the frictional force between the inwall of regulating friction member and vibration damper cylindrical shell.
More preferably, the frictional force controlling device can comprise pressure unit, and this pressure unit is used to push friction member so that this friction member moves to distance to a declared goal towards the inwall of vibration damper cylindrical shell.
Pressure unit comprises first pressure member; Second pressure member, it is arranged on a side of first pressure member, and is in relative position with first pressure member; And space regulator, its be used for axial direction at axle move first and second pressure members at least one of them so that mobile friction member.
When first and second pressure members were close to each other, the frictional force between the inwall of friction member and vibration damper cylindrical shell increased.
Thus, first and second pressure members are arranged on the axial direction of axle, and at least one pressure member in first and second pressure members comprises at least one incline section, and it slopes inwardly towards another pressure member in first and second pressure members.
For example, the side surface of at least one pressure member tilts like this in first and second pressure members: the area of its cross section is reduced near another pressure member in first and second pressure members time.
Preferably, pressure unit can further comprise at least one slide member, and it is arranged in the friction member corresponding to incline section, and outwards moves to push friction member along incline section when first and second pressure members are close to each other.
Friction member first and second pressure members mutually away from the time move and separate to the center of axle with the inwall of vibration damper cylindrical shell.
Preferably, slide member can comprise resilient member, this resilient member be used for first and second pressure members mutually away from the time with friction member turn back to the axle the center.
Resilient member has annular shape, and is arranged on the outer cylinder surface of slide member.
Comprise at pressure unit under the situation of a plurality of slide members, pressure unit may further include guiding rib (rib), it is arranged on the outer cylinder surface of at least one pressure member in first and second pressure members, is used for preventing slide member concentrated moving in a circumferential direction.
Space regulator moves second pressure member.
Space regulator comprises: at least one connecting rod, and it passes first pressure member of the main body that is fixed in axle, and is connected with second pressure member; And driver element, it is used to drive connecting rod to move second pressure member.
Driver element can mobile point-blank connecting rod to move second pressure member.
Driver element comprises: electromagnet, the opposite side that it is arranged on first pressure member is used to utilize the mobile point-blank connecting rod of magnetic force, so that second pressure member moves to first pressure member when electric current flows through.
Connecting rod comprises the metal construction that is arranged between first pressure member and the electromagnet.
Driver element comprises: the lead that is connected to connecting rod; And the actuator that is connected to lead.
Driver element comprises the motor of the bar that is used to be rotatably connected, and second pressure member moves point-blank by the rotation of this connecting rod.
Connecting rod passes second pressure member, and is connected to second pressure member by screw.
Pressure unit can comprise pilot pin further, and the one end inserts first pressure member and its other end inserts second pressure member, is used to guide moving of second pressure member.
Alternatively, space regulator can comprise: electromagnet, and it is arranged on first pressure member; Metal construction, it is arranged on second pressure member; And guide rod, it passes second pressure member and is used to guide moving of second pressure member.
Preferably, guide rod can comprise stopper, and an end of this stopper is connected to a side of electromagnet, and the other end prevents that second pressure member from separating with guide rod.
Friction member can have the annular shape of the outer cylinder surface of threaded shaft.
Further preferably, friction member can be made by elastic material.
Friction member is at the inwall of contact vibration damper cylindrical shell during greater than designated value by the vibratory output of the object that vibrated, and separates with the inwall of vibration damper cylindrical shell during less than designated value at the vibratory output of this object.
Frictional force between the inwall of friction member and vibration damper cylindrical shell is in the rotational speed that is used for vibrative object during greater than designated value, and is littler during less than designated value in the rotational speed of this object than it.
One of them of vibration damper cylindrical shell and axle is connected to the steel ladle of washing machine, and another of vibration damper cylindrical shell and axle is connected to the casing of washing machine.
Should be understood that above-mentioned general description of the present invention and following specific descriptions are exemplary and illustrative, and aim to provide further explanation as claims the present invention for required protection.
Description of drawings
Provide embodiments of the invention are for example understood in further understanding of the present invention and the accompanying drawing that constitutes the part of this specification, and explain principle of the present invention with specification.
In the accompanying drawings:
Fig. 1 is the schematic sectional view of conventional rollers washing machine;
Fig. 2 is the variation of expression along with damping force, the plotted curve of the relation between the vibratory output of steel ladle and the rotational speed of cylinder;
Fig. 3 is the variation of expression along with damping force, the plotted curve of the relation between the TR power of vibration damper and the rotational speed of cylinder;
Fig. 4 is the sectional view according to the vibration damper of first embodiment of the invention;
Fig. 5 A is part and the longitudinal sectional view and the transverse sectional view of expression vibration damper friction member (its inwall with the vibration damper cylindrical shell separates) shown in Figure 4 with Fig. 5 B;
Fig. 6 A is part and the longitudinal sectional view and the transverse sectional view of expression friction member (it contacts the inwall of vibration damper cylindrical shell) shown in Figure 4 with Fig. 6 B;
Fig. 7 is an embodiment's the sectional view of the pressure unit of vibration damper of the present invention;
Fig. 8 is another embodiment's the perspective view of the pressure unit of vibration damper of the present invention;
Fig. 9 A and Fig. 9 B are the sectional views according to the vibration damper of second embodiment of the invention;
Figure 10 A and Figure 10 B are the sectional views according to the vibration damper of third embodiment of the invention; And
Figure 11 A and Figure 11 B are the sectional views according to the vibration damper of fourth embodiment of the invention.
Embodiment
To describe preferred embodiment of the present invention in detail now, the example is illustrated in the accompanying drawings.
As much as possible, in whole accompanying drawing, use identical reference character to represent identical or similar part.
At first, with reference to figure 4 to Fig. 8, the vibration damper according to first embodiment of the invention is described.
Here, Fig. 4 is the sectional view according to the vibration damper of first embodiment of the invention.Fig. 5 A is part and the longitudinal sectional view and the transverse sectional view of expression vibration damper friction member (its inwall with the vibration damper cylindrical shell separates) shown in Figure 4 with Fig. 5 B.Fig. 6 A is part and the longitudinal sectional view and the transverse sectional view of the friction member (it contacts the inwall of vibration damper cylindrical shell) of expression vibration damper shown in Figure 4 with Fig. 6 B; Fig. 7 is another embodiment's the sectional view of the pressure unit of vibration damper of the present invention; Fig. 8 is another embodiment's the perspective view of the pressure unit of vibration damper of the present invention.
The vibration damper of the present invention that will be described below can be applied to conventional laundry apparatus or vibrative device, also can be applicable to above-mentioned roller washing machine.To omit the known function of washing machine of application vibration damper of the present invention and the detailed description of structure in the following explanation of the present invention, and in the conventional washer of the identical or like of washing machine and use vibration damper those are the same is endowed identical reference character.
At first,, comprise according to the vibration damper 600 of first embodiment of the invention with reference to figure 4: vibration damper cylindrical shell 610, insert the axle 620 of vibration damper cylindrical shell 610, and be arranged on the friction member 630 on the axle 620.
Vibration damper cylindrical shell 610 has hollow cylindrical structure.One end of axle 620 inserts the opening end of vibration damper cylindrical shell 610, and axle 620 moves back and forth at the longitudinal direction of vibration damper cylindrical shell 610 when steel ladle 20 vibrations.
Here, the other end of vibration damper cylindrical shell 610 is connected to the bottom of steel ladle 20, and the other end of axle 620 is connected to the bottom of casing 10 to absorb the vibration that steel ladle 20 produces.
On the other hand, the other end of vibration damper cylindrical shell 610 can be connected to the bottom of casing 10, and the other end of axle 620 can be connected to the bottom of steel ladle 20.
Below, for convenience of explanation, explanation is furnished with the top 610a that is connected to steel ladle 20 bottoms and is connected to the vibration damper 600 of bottom 610b of the bottom of casing 10.
Thereby axle 620 comprises the frictional force controlling device, and it is used for regulating frictional force between the inwall of friction member 630 and vibration damper cylindrical shell 610 by mobile friction member 630.
With reference to figure 5A and Fig. 5 B and Fig. 6 A and Fig. 6 B, the frictional force controlling device will describe in detail below.The frictional force controlling device of first embodiment's vibration damper 600 comprises pressure unit 640, and it is used for pushing friction member 630 so that friction member 630 moves distance to a declared goal towards the inwall of vibration damper cylindrical shell 610 towards the inwall of vibration damper cylindrical shell 610.
In the present embodiment, pressure unit 640 comprises first pressure member 641, is arranged on second pressure member 642 of a side of first pressure member 641, and the space regulator that is used to regulate interval between first pressure member 641 and second pressure member 642.
Thereby first pressure member 641 and second pressure member 642 are arranged on the axial direction of axle 620, i.e. longitudinal direction.
Space regulator the axial direction of axle 620 move first pressure member 641 and second pressure member 642 at least one of them, regulating the interval between first pressure member 641 and second pressure member 642, thereby make the inwall of friction member 630 with the power contact vibration damper cylindrical shell 610 of appointment.
In the present embodiment, first pressure member 641 is fixed on the main body of axle 620, and second pressure member 642 is installed on the main body of axle 620 like this: make second pressure member, 642 vertical movement.Therefore, when first pressure member 641 and second pressure member 642 were close to each other, the frictional force between the inwall of friction member 630 and vibration damper cylindrical shell 610 increased.
Alternatively, second pressure member 642 can be fixed on the main body of axle 620, and first pressure member 641 can be installed on the main body of axle 620 like this: make first pressure member, 641 vertical movement.
Although present embodiment is for example understood first pressure member 641 of upper end of the main body be arranged on axle 620 and the position of second pressure member, 642, the first pressure members 641 and second pressure member 642 and is not limited thereto.
For example, from the bottom of first pressure member 641 to the top of first pressure member 641 intilted a plurality of incline sections, can be formed on the side surface of first pressure member 641, so that incline section separates equally spacedly at circumferencial direction.The a plurality of incline sections that have symmetric shape with the incline section of first pressure member 641 can be formed on the side surface of second pressure member 642.
In the present embodiment, first pressure member 641 has this shape, and the cross sectional area of first pressure member 641 is reduced from its underpart to the top that is provided with second pressure member 642, and has from its underpart to the intilted side surface in its top.Second pressure member 642 and first pressure member, 641 symmetries.Thereby incline section 641a and 642a are respectively formed on the side surface of first and second pressure members 641 and 642.
Although do not illustrate in the accompanying drawing, have only one of first pressure member 641 and second pressure member 642 can have above-mentioned shape.
Here, the vertical cross-section of incline section 641a and 642a can have difformity, for example straight line and recessed shape.Fig. 7 illustrates an embodiment of the pressure unit that comprises first and second pressure members 741 with incline section 741a and 742a (its vertical cross-section has concave shape) and 742.
Preferably, at least one slide member 643 is set in friction member 630 is used for outside mobile friction member 630, so that the incline section 641a of first pressure member 641 is corresponding to the incline section 642a of second pressure member 642.
Each slide member 643 comprises the upper slanted plane corresponding to the incline section 642a of second pressure member 642, and corresponding to the lower slanted plane of the incline section 641a of first pressure member 641.
Therefore, when first pressure member 641 and second pressure member 642 were close to each other, the upper and lower clinoplain of slide member 643 was pushed by the incline section 642a of the incline section 641a of first pressure member 641 and second pressure member 642.
More particularly, when first pressure member 641 and second pressure member 642 were close to each other, the upper and lower clinoplain of slide member 643 slided along the incline section 641a of first pressure member 641 and the incline section 642a of second pressure member 642.
Therefore, slide member 643 outwards moves towards the inwall of vibration damper cylindrical shell 610, and pushes the internal surface of friction member 630, thereby makes the inwall of friction member 630 with the power contact vibration damper cylindrical shell 610 of appointment.
Preferably, the incline section 641a of first pressure member 641, the incline section 642a of second pressure member 642, the upper and lower clinoplain of slide member 643 is made by the material with surface more smooth than the inwall of friction member 630 and vibration damper cylindrical shell 610.
When first pressure member 641 and second pressure member 642 away from each other the time, that is, when second pressure member 642 moved up, preferably, friction member 630 moved towards the center of axle 620.Therefore, the frictional force between the inwall of friction member 630 and vibration damper cylindrical shell 610 little by little reduces, thereby the damping force of vibration damper 600 reduces.
Preferably, at least one slide member 643 comprises resilient member 643a, and this resilient member 643a is used for returning friction member 630 to the center of axle 620 at first pressure member 641 and second pressure member 642 away from each other the time.
For example, resilient member 643a can be arranged on the metal spring with annular shape or rubber band on the outer cylinder surface of slide member 643.
Groove 643b forms in the outer cylinder surface of slide member 643 at circumferencial direction, and the resilient member 643a of annular inserts groove 643b.
When a plurality of slide members 643 are arranged on the friction member 630, as shown in Figure 8, prevent that slide member 643 is formed on first pressure member 641 and second pressure member 642 at least on one of them the outer cylinder surface at the guiding rib 641b that circumferencial direction concentrate to move.
Preferably, guiding rib 641b equally spaced is separated from each other in a circumferential direction.Thereby, can keep the appropriate intervals between the slide member 643.
The friction member 630 of being pushed by slide member 643 and moving can prepare the quantity identical with slide member 643, or can be the resilient member around an annular of the outer cylinder surface of at least one slide member 643 as the present embodiment explanation.
The space regulator of first embodiment's vibration damper as mentioned above, moves second pressure member 642 to first pressure member 641.
For this reason, space regulator comprises the connecting rod 644 that passes first pressure member 641 and vertical movement, and the driver element that is used to drive connecting rod 644.
The upper end of connecting rod 644 is connected to second pressure member 642, and along passing the guide hole 641c vertical movement that first pressure member 641 forms.When connecting rod 644 straight lines were mobile downward or upward, second pressure member 642 moved downward or upward.
Therefore, friction member 630 is pushed by slide member 643, and moves towards the inwall or the opposite direction of vibration damper cylindrical shell 610.Thus, the frictional force between the inwall of adjustment friction member 630 and vibration damper cylindrical shell 610.
In the present embodiment, the driver element of space regulator moves connecting rod 644 by magnetic force.
More particularly, driver element comprises the electromagnet 645 that is arranged on below first pressure member 641.
For this reason, electromagnet 645 comprises the core body 645a that is installed in axle 620 tops, is installed in the bobbin 645b of core body 645a outside, and repeatedly is wrapped in the coil (not shown) on the bobbin 645b.When electric current was applied to electromagnet 645 with generation magnetic force, connecting rod 644 was attracted downwards by the magnetic force of electromagnet 645.
Preferably, each connecting rod 644 comprises metal construction 644a, and this metal construction 644a is formed on the lower end between first pressure member 641 and the electromagnet 645.
That is to say that when steel ladle 20 is in the undue oscillation state, the inwall of friction member 630 contact vibration damper cylindrical shells 610 increases the damping force of vibration damper 600 with this.Then, when steel ladle 20 reached the normal vibration state, friction member 630 separated the damping force that reduces vibration damper 600 with this with the inwall of vibration damper cylindrical shell 610.
Below, explanation is utilized the decay vibrations of the washing machine of above-mentioned vibration damper of the present invention handle.
At first, when washer operation, whirligig 40 rotating drums 30, clothing is by the rotation washing of cylinder 30.
Then, steel ladle 20 vibrates by the rotation of whirligig 40 and cylinder 30.
Here, the vibration of steel ladle 20 is by vibration damper 600 decay, and the vibration of steel ladle 20 is minimized to the transmission of casing 10.
When the dehydrating operations of clothing began, steel ladle 20 was in the starting stage of dehydrating operations undue oscillation.
In the undue oscillation state of steel ladle 20, producing magnetic force, and the metal construction 644a that is installed in the bottom of connecting rod 644 moves to electromagnet 645 by magnetic force electricity to electromagnet 645 power supply.
Simultaneously, second pressure member 642 that is connected to the lower end of connecting rod 644 moves down, and power is applied on the slide member 643 by first pressure member 641 and second pressure member 642, so that slide member 643 moves towards the inwall of vibration damper cylindrical shell 610.
Thereby friction member 630 is pushed by slide member 643, and the inwall of contact vibration damper cylindrical shell 610, and the vibration of steel ladle 20 is decayed by the frictional force between the inwall of friction member 630 and vibration damper cylindrical shell 610.
When dehydrating operations continues the fixed time so that the rotational speed of the cylinder 30 that is rotated by motor 40 when being higher than command speed, steel ladle 20 reaches the normal vibration state.
In the normal vibration state of steel ladle 20, when friction member 630 with the undue oscillation state in the power that equates when the inwall of vibration damper cylindrical shell 610 is pressed, the vibration of steel ladle 20 that is delivered to the casing 10 of washing machine by vibration damper 600 increases greatly.
Therefore, when steel ladle 20 arrives the normal vibration state,, thereby eliminated the magnetic force that is applied on the metal construction 644a not to electromagnet 645 power supplies.
Therefore, eliminated the power that is used to push the friction member 630 that is arranged on slide member 643 outsides, and slide member 643 turns back to initial position by the resilient member 643a on the outer cylinder surface that is arranged on slide member 643 towards the center of axle 620.Further, friction member 630 flexibly shortens, and moves to its initial position, promptly towards the center of axle 620.
That is to say, friction member 630 separates with the inwall of vibration damper cylindrical shell 610, and distance to a declared goal (t) forms between the inwall of friction member 630 and vibration damper cylindrical shell 610, and, to the structure of washing machine, particularly the TR power of the steel ladle 20 of casing 10 generations reduces by vibration damper 600.Therefore, dehydrating operations is quiet and finish reposefully.
For at the preferred above-mentioned vibration damper 600 of state of operation, be preferably the vibrating sensing device (not shown) that the vibration that is used to respond to steel ladle 20 is installed at the specified position of washing machine, and be used for control unit (not shown) according to the vibrational state control vibration damper 600 of steel ladle 20.
When the vibrating sensing device was sensed the vibration of washing machine and transmitted signals to control unit, control unit control supplied to the electric current of electromagnet 645, thus the damping force of regulating vibration damper 600.
In addition, also can use another kind to be used to regulate the method for the damping force of vibration damper 600.In this method, the used time of normal vibration state that arrives steel ladle 20 is input to control unit in advance.Before steel ladle 20 arrived the normal vibration state, electric current supply was to the damping force of electromagnet 645 with increase vibration damper 600, and after steel ladle 20 arrived the normal vibration states, electric current did not supply to electromagnet 645 to reduce the damping force of vibration damper 600.
Below, to Figure 11 B, the vibration damper according to other embodiments of the invention is described with reference to Fig. 9 A.
In these embodiments, although it is described in different accompanying drawings, the vibration damper parts identical with those parts of first embodiment's vibration damper are endowed identical reference character, and will omit its detailed explanation, because this is unnecessary.
At first, with reference to Fig. 9 A and Fig. 9 B, the vibration damper 600a according to second embodiment of the invention is described.
With reference to Fig. 9 A and Fig. 9 B, vibration damper 600a comprises the connecting rod 744 that passes first pressure member 641 and second pressure member 642 and vertical movement.
For this reason, vertical guide hole (not shown) is passed the core of first and second pressure members 641 and 642 respectively and is formed.
Here, pass the diameter of the diameter of first and second pressure members 641 and 642 guide holes that form greater than connecting rod 744.
The lower end of connecting rod 744 is connected to the actuator (not shown), and is connected to the lead 745 that is used for downward tractive connecting rod 744.
Has the upper end that is formed on connecting rod 744 greater than the head 744a of the diameter of the guide hole diameter of second pressure member 642.
Therefore, when lead 745 passed through the driving tractive connecting rod 744 of actuator, the upper surface of second pressure member 642 was pushed by head 744a so that second pressure member 642 moves down.
Then, slide member 643 is pushed by first pressure member 641 and second pressure member 642, incline section 641a and 642a along first pressure member 641 and second pressure member 642 outwards slide, and push friction member 630 towards the inwall of vibration damper cylindrical shell 610.
Other structure of vibration damper 600a and operating method are substantially the same with the vibration damper among first embodiment, omit it at this and describe in detail, because this is unnecessary.
Below, to Figure 10 B, the vibration damper 600b according to third embodiment of the invention is described with reference to Figure 10 A.
With reference to Figure 10 A and Figure 10 B, vibration damper 600b comprises the connecting rod 844 that passes first pressure member 641 and be connected to second pressure member 642, in order to vertically to move second pressure member 642.
More particularly, connecting rod 844 vertically passes second pressure member 642.
For this reason, vertical guide hole (not shown) is passed the core formation of first and second pressure members 641 and 642 respectively.
Especially, internal thread forms in the guide hole of second pressure member 642, is formed on the outer cylinder surface of connecting rod 844 corresponding to the outside thread of internal thread.Outside thread on the outer cylinder surface of the internal thread of the guide hole of second pressure member 642 and connecting rod 844 is meshed.
Although present embodiment is for example understood the motor 845 be arranged on below first pressure member 641, the position of motor 845 is not limited to herein.For example, motor 845 can be fixed in the inside of first pressure member 641.
Although connecting rod 844 is directly connected to the running shaft (not shown) of motor 845, the connecting means of connecting rod 844 is not limited thereto.For example, connecting rod 844 can be connected to the running shaft of motor 845 by belt.
Be subjected to connecting rod 844 influences for fear of first pressure member 641 when launched machines 845 rotations of connecting rod 844, preferably, pass the diameter of the diameter of the guide hole that first pressure member 641 forms greater than connecting rod 744.
For this reason, the first groove (not shown) that the lower end was inserted into designated depth and pilot pin 846 is formed on the upper surface of first pressure member 641, and has the lower surface that the second groove (not shown) that the upper end of designated depth and pilot pin 846 is inserted into is formed on second pressure member 642.
Preferably, one of them the diameter at least of first and second grooves is greater than the diameter of pilot pin 846.
The vertical movement of pilot pin 846 guiding second pressure member 642, and avoid second pressure member 642 to rotate simultaneously with the rotation of connecting rod 844.
Therefore, when connecting rod 844 during in the rotation of direction, second pressure member 642 is not rotated by pilot pin 846, but moves up or down, that is, move at the longitudinal direction straight line of vibration damper cylindrical shell 610.
Described in first embodiment's vibration damper, the frictional force between the inwall of friction member 630 and vibration damper cylindrical shell 610 is regulated by the vertical movement of second pressure member 642.
In the vibration damper among other structure of vibration damper 600b and operating method and first embodiment those are substantially the same, omit it at this and describe in detail, because this is unnecessary.
Below, to Figure 11 B, the vibration damper 600c according to fourth embodiment of the invention is described with reference to Figure 11 A.
With reference to Figure 11 A and Figure 11 B, second pressure member 642 of vibration damper 600c moves by the magnetic force of electromagnet 945, and is similar with first embodiment's vibration damper 600.
More particularly, vibration damper 600c comprises the electromagnet 945 that is arranged on first pressure member 641, and is arranged on first metal construction 946 on second pressure member 642.
Here, electromagnet 945 passes first pressure member 641 so that the upper end face of electromagnet 945 is consistent with the upper end face of first pressure member 641.
Although the core body 645a of the vibration damper 600c of present embodiment is fixed on the main body upper end of axle 620, the position of core body 645a is not limit herein.
The second metal construction 945c distributes the magnetic force that produces equably along coil when electric current flows through, and improves the magnetic force of electromagnet 945.
For this reason, preferably, first metal construction 946 is fixed in second pressure member 642.More preferably first metal construction 946 is fixed on the bottom of second pressure member 642.
In order to guide second pressure member 642 along with to the cut-out of the electric current supply of electromagnet or electric current supply and vertical movement is provided with guide rod 944, this guide rod 944 passes second pressure member 642 so that an end of guide rod 944 is connected to an end of electromagnet 945.
More particularly, guide rod 944 vertically passes the core of second pressure member 642, so that the core body 645a of electromagnet 945 is fixed in the lower end of guide rod 944.
In order to move second pressure member 642 reposefully, preferably, the guide hole that guide rod 944 passed passes second pressure member 642 and forms.Here, guide hole has the diameter bigger than the diameter of guide rod 944.
Preferably, be used to avoid the stopper 944a of second pressure member, 642 separation to be formed on guide rod 944.
Therefore, when the electric current supply that cuts off electromagnet, second pressure member 642 is kept by stopper 944a away from the distance to a declared goal between first pressure member, 641, the second pressure members 641 and first pressure member 642 by being applied to the power on the friction member 630.That is to say that second pressure member 642 is moved upwards up to distance to a declared goal, is stopped by stopper 944a then.
Those of vibration damper among other structure of vibration damper 600c and operating method and first embodiment are substantially the same, omit it at this and describe in detail, because this is unnecessary.
Although the foregoing description understands that for example in the normal vibration state of steel ladle, friction member separates with the inwall of vibration damper cylindrical shell, the position of friction member is not limited to herein.
That is to say that according to the vibration characteristics of the object that is vibrated, friction member can be by the inwall of power contact vibration damper cylindrical shell less in the normal vibration state (rather than undue oscillation state of this object) of this object.
The effect of vibration damper of the present invention will be described below.
At first, vibration damper of the present invention is regulated its damping force according to vibrating the extent of vibration of object and/or the rotating amount of this object, thereby improves vibration-damping effect and noise suppression effect.
The second, vibration damper of the present invention reduces the transfer of vibration of this object, thereby avoids peripheral assembly impaired.
The 3rd, vibration damper of the present invention has the simple structure of the pressure unit that is used to push friction member, thereby is easy to make.
The 4th, vibration damper of the present invention does not need to be used to reduce the power supply unit of the damping force of vibration damper, thereby reduces manufacture cost.
The 5th, vibration damper of the present invention reduces when steel ladle is in the normal vibration state or has eliminated frictional force between vibration damper cylindrical shell and the friction member, thereby prolongs the working life of friction member.
For a person skilled in the art, it is tangible making different modifications and variations without departing from the spirit and scope of the present invention.
Therefore, only otherwise break away from the scope and the equivalent scope thereof of appended claims, all should contain in the present invention modifications and variations of the present invention.
Claims (28)
1, a kind of vibration damper comprises:
The vibration damper cylindrical shell;
Axle, its end that passes this vibration damper cylindrical shell inserts in this vibration damper cylindrical shell, and moves back and forth at the longitudinal direction of this vibration damper cylindrical shell; And
Friction element is arranged on this axle, and it is used for by the vibrations that decay of the friction with the inwall of this vibration damper cylindrical shell, and vertically moves with the longitudinal direction of this vibration damper cylindrical shell.
2, vibration damper as claimed in claim 1, wherein, this axle comprises the frictional force controlling device, is used for moving this friction member with the frictional force between the inwall of regulating this friction member and this vibration damper cylindrical shell.
3, vibration damper as claimed in claim 2, wherein, this frictional force controlling device comprises pressure unit, it is used to push this friction member so that this friction member moves to distance to a declared goal towards the inwall of this vibration damper cylindrical shell.
4, vibration damper as claimed in claim 3, wherein, this pressure unit comprises:
First pressure member;
Second pressure member is arranged on a side of this first pressure member, and is in relative position with this first pressure member; And
Space regulator, at least one that is used for moving this first and second pressure member at this axial direction is to move this friction member.
5, vibration damper as claimed in claim 4, wherein, when this first and second pressure member was close to each other, the frictional force between the inwall of this friction member and this vibration damper cylindrical shell increased.
6, vibration damper as claimed in claim 4, wherein, this first and second pressure member is arranged on this axial direction, and at least one pressure member in this first and second pressure member comprises at least one incline section, and this incline section slopes inwardly towards another pressure member in first and second pressure members.
7, vibration damper as claimed in claim 6, wherein, the side surface of at least one pressure member tilts like this in this first and second pressure member: its cross sectional area is reduced near another pressure member in this first and second pressure member the time.
8, vibration damper as claimed in claim 6, wherein, this pressure unit further comprises at least one slide member, it is arranged on this friction member corresponding to this incline section, and outwards moves to push this friction member along this incline section when this first and second pressure member is close to each other.
9, vibration damper as claimed in claim 8, wherein, this first and second pressure member away from each other the time this friction member move and separate to this center with the inwall of this vibration damper cylindrical shell.
10, vibration damper as claimed in claim 9, wherein, this slide member comprises resilient member, is used for making this friction member turn back to this center at this first and second pressure member away from each other the time.
11, vibration damper as claimed in claim 10, wherein, this resilient member has annular shape, and is arranged on the outer cylinder surface of this slide member.
12, vibration damper as claimed in claim 8, wherein, comprise at this pressure unit under the situation of a plurality of slide members, this pressure unit further comprises guiding rib, these guiding ribs are arranged at least one the outer cylinder surface in this first and second pressure member, move to avoid these slide members to concentrate at circumferencial direction.
13, vibration damper as claimed in claim 4, wherein, this space regulator moves this second pressure member.
14, vibration damper as claimed in claim 13, this space regulator comprises:
At least one connecting rod, it passes and is fixed in first pressure member on this main body and is connected to this second pressure member; And
Driver element, it is used to drive this connecting rod to move second pressure member.
15, vibration damper as claimed in claim 14, wherein, this driver element straight line moves this connecting rod to move this second pressure member.
16, vibration damper as claimed in claim 15, wherein, this driver element comprises electromagnet, and it is arranged on the opposite side of this first pressure member, be used to utilize the magnetic force straight line to move this connecting rod, so that second pressure member moves towards this first pressure member when electric current flows through.
17, vibration damper as claimed in claim 16, wherein, this connecting rod comprises metal construction, it is arranged between this first pressure member and this electromagnet.
18, vibration damper as claimed in claim 15, wherein, this driver element comprises:
Be connected to the lead of this connecting rod; And
Be connected to the actuator of this lead.
19, vibration damper as claimed in claim 14, wherein, this driver element comprises motor, it is used to rotate this connecting rod, and this second pressure member straight line moves by the rotation of this connecting rod.
20, vibration damper as claimed in claim 19, wherein, this connecting rod passes this second pressure member, and is connected to this second pressure member by screw.
21, vibration damper as claimed in claim 18, wherein, this pressure unit further comprises pilot pin, and the one end inserts this first pressure member, and the other end inserts this second pressure member, is used to guide moving of this second pressure member.
22, vibration damper as claimed in claim 13, wherein, this space regulator comprises:
Electromagnet, it is arranged on this first pressure member;
Metal construction, it is arranged on second pressure member; And
Guide rod, it passes this second pressure member, is used to guide moving of this second pressure member.
23, vibration damper as claimed in claim 22, wherein, this guide rod comprises stopper, the one end is connected to a side of this electromagnet and its other end prevents that this second pressure member from separating with this guide rod.
24, vibration damper as claimed in claim 1, wherein, this friction member has the annular shape around this outer cylinder surface.
25, vibration damper as claimed in claim 24, wherein, this friction member is made by elastic material.
26, vibration damper as claimed in claim 1, wherein, this friction member is at the inwall that is contacted this vibration damper cylindrical shell by the vibratory output of vibration object during greater than designated value, and separates with the inwall of this vibration damper cylindrical shell during less than this designated value at the vibratory output of this object.
27, vibration damper as claimed in claim 1, wherein, the frictional force between the inwall of this friction member and this vibration damper cylindrical shell is in the rotational speed that is used for vibrative object during greater than designated value, and is littler during less than designated value than the rotational speed of this object.
28, vibration damper as claimed in claim 1, wherein, one of them of this vibration damper cylindrical shell and this is connected to the steel ladle of washing machine, and another of this vibration damper cylindrical shell and this is connected to the casing of this washing machine.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20040054425 | 2004-07-13 | ||
| KR20040054424 | 2004-07-13 | ||
| KR20040054423 | 2004-07-13 | ||
| KR20040054426 | 2004-07-13 | ||
| KR1020040054423A KR100577257B1 (en) | 2004-07-13 | 2004-07-13 | damper for washing machine and method for controlling the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1721725A true CN1721725A (en) | 2006-01-18 |
Family
ID=35912244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100833764A Pending CN1721725A (en) | 2004-07-13 | 2005-07-13 | Damper for damping vibration and washing machine having the same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100577257B1 (en) |
| CN (1) | CN1721725A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102414471A (en) * | 2009-03-05 | 2012-04-11 | Aps技术公司 | System and method for damping vibration in a drill string using a magnetorheological damper |
| CN102947612A (en) * | 2010-05-11 | 2013-02-27 | 阿迪尔·坎尼奥兹 | An electromechanical friction shock absorber |
| CN103572550A (en) * | 2012-07-30 | 2014-02-12 | Lg电子株式会社 | Laundry processing machine |
| CN105465270A (en) * | 2015-12-28 | 2016-04-06 | 东北大学 | Frictional electromagnetic compound damping intelligent vibration isolator system and vibration testing method |
| CN105570371A (en) * | 2016-02-26 | 2016-05-11 | 吉林大学 | Liquid pressure-regulated and velocity-dependent dry friction shock absorber |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101916438B1 (en) * | 2012-07-30 | 2018-11-07 | 엘지전자 주식회사 | Laundry treatment apparatus |
| KR20210030111A (en) | 2019-09-09 | 2021-03-17 | 엘지전자 주식회사 | Laundry treating apparatus |
-
2004
- 2004-07-13 KR KR1020040054423A patent/KR100577257B1/en not_active IP Right Cessation
-
2005
- 2005-07-13 CN CNA2005100833764A patent/CN1721725A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102414471A (en) * | 2009-03-05 | 2012-04-11 | Aps技术公司 | System and method for damping vibration in a drill string using a magnetorheological damper |
| CN102414471B (en) * | 2009-03-05 | 2014-09-17 | Aps技术公司 | System and method for damping vibration in a drill string using a magnetorheological damper |
| CN102947612A (en) * | 2010-05-11 | 2013-02-27 | 阿迪尔·坎尼奥兹 | An electromechanical friction shock absorber |
| CN102947612B (en) * | 2010-05-11 | 2015-05-06 | 阿迪尔·坎尼奥兹 | An electromechanical friction shock absorber |
| CN103572550A (en) * | 2012-07-30 | 2014-02-12 | Lg电子株式会社 | Laundry processing machine |
| CN103572550B (en) * | 2012-07-30 | 2016-03-09 | Lg电子株式会社 | Washings treatment facility |
| CN105465270A (en) * | 2015-12-28 | 2016-04-06 | 东北大学 | Frictional electromagnetic compound damping intelligent vibration isolator system and vibration testing method |
| CN105465270B (en) * | 2015-12-28 | 2017-06-30 | 东北大学 | One kind friction Electromagnetic heating damping intelligent vibration isolator system and method for testing vibration |
| CN105570371A (en) * | 2016-02-26 | 2016-05-11 | 吉林大学 | Liquid pressure-regulated and velocity-dependent dry friction shock absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100577257B1 (en) | 2006-05-10 |
| KR20060005579A (en) | 2006-01-18 |
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