US20040226321A1 - Variable damping type damper and washing machine having the same - Google Patents

Variable damping type damper and washing machine having the same Download PDF

Info

Publication number
US20040226321A1
US20040226321A1 US10/753,494 US75349404A US2004226321A1 US 20040226321 A1 US20040226321 A1 US 20040226321A1 US 75349404 A US75349404 A US 75349404A US 2004226321 A1 US2004226321 A1 US 2004226321A1
Authority
US
United States
Prior art keywords
cylinder
damper
frictional
receiving space
guide 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.)
Abandoned
Application number
US10/753,494
Other languages
English (en)
Inventor
Gwan-Ryong Park
Jae-hyun Kim
Seung-Chul Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, JAE-HYUN, PARK, GWAN-RYONG, PARK, SEUNG-CHUL
Publication of US20040226321A1 publication Critical patent/US20040226321A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • D06F37/268—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for suspension devices
    • 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
    • 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
    • F16F15/022—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 dampers and springs in combination
    • 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
    • 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

Definitions

  • the present invention relates to a variable damping type damper and a washing machine having the same, and more particularly, to a variable damping type damper capable of minimizing a transmission of vibration to other components by effectively absorbing steady state vibration and transient state vibration by using a flow amount difference of air, and a washing machine having the same.
  • washing machine washes laundry by performing a washing operation, a rinsing operation, and a dehydration operation.
  • Washing methods of the washing machine include a method for washing laundry accordingly as vortex generated when a washing bar having blades is rotated in the middle of a laundry basin applies an impact to laundry, a method for washing laundry accordingly as vortex generated when a rotation blade mounted at a lower portion of a laundry basin is rotated applies an impact to laundry, a method for washing laundry by an impact that laundry drops by rotating a drum in which laundry is put in a horizontal direction, and etc.
  • FIG. 1 is a frontal section view showing one embodiment of a general washing machine.
  • the washing machine comprises a cabinet 100 having an inner space of a predetermined shape; a tub 210 positioned in the cabinet 100 ; a drum 220 rotatably inserted into the tub 210 and through which laundry is introduced; a driving motor 230 mounted at a rear surface of the tub 210 for rotating the drum 220 ; a spring 110 mounted between the cabinet 100 and an upper portion of the tub 210 for elastically supporting the tub 210 ; a damper 300 mounted between the cabinet 100 and a lower portion of the tub 210 for absorbing vibration; a water supply means (not shown) for supplying washing water into the tub 210 ; a drain means (not shown) for draining water inside the tub 210 ; and a door (not shown) for opening and closing the drum 220 .
  • the tub 210 , the drum 220 , and the driving motor 230 constitute one tub assembly 200 , and the tub assembly 200 is supported by the damper 300 and the spring 110 .
  • vibration is generated in the tub assembly at the time of a washing operation or a dehydration operation, and the vibration is absorbed by the spring 110 and the damper 300 thus to be prevented from being transmitted to the cabinet 100 .
  • FIG. 2 is a frontal section view showing a damper constituting the washing machine.
  • the damper 300 comprises a first body 310 having one side relative-movably coupled to the tub 210 and having a frictional surface 311 of a cylindrical shape at an inner portion of another side thereof; a second body 320 having one side relative-movably coupled to the cabinet 100 and having another side inserted into the frictional surface 311 of the first body 310 ; and a frictional member 330 fixedly coupled to the second body 320 to be in contact with the frictional surface 311 of the first body for generating a frictional force at the time of moving.
  • a guide bush 340 for blocking a gap between the first body 310 and the second body 320 is coupled to an inlet of the frictional surface 311 of the first body 310 .
  • the frictional member 330 is formed as ring shape having a certain thickness and length, and a coupling groove 321 having a certain depth and length is formed at an outer circumferential surface of the second body 320 at one side thereof.
  • the frictional member 330 is inserted into the coupling groove 321 of the second body.
  • the outer circumferential surface of the frictional member 330 comes into contact with an inner circumferential surface of the first body 310 , that is, the frictional surface 311 .
  • the damper 300 when vibration generated from the tub assembly 200 is transmitted, the second body 320 moves towards a straight line direction and thereby the frictional member 330 is moved together. According to this, a constant friction between the outer circumferential surface of the frictional member 330 and the frictional surface 311 of the first body is generated, thereby absorbing vibration transmitted from the tub assembly 200 .
  • a degree of vibration generated from the tub assembly 200 is different in an entire process for washing laundry. That is, steady state vibration is generated in a normal state at the time of a washing operation or a dehydration operation, and transient state vibration is generated in a process for reaching a normal dehydration speed at the time of a dehydration operation. Therefore, by the damper 300 which generates a constant frictional force, steady state vibration and transient state vibration generated from the tub assembly 202 can not be sufficiently absorbed, so that vibration generated from the tub assembly 200 is transmitted to the cabinet 100 thus to generate noise outwardly.
  • FIG. 3 is a frontal section view showing another embodiment of the damper constituting the washing machine.
  • the damper comprises a first body 410 having a frictional surface 411 of a cylindrical shape at an inner portion at one side thereof; a second body 420 inserted into the frictional surface 411 of the first body 410 ; a guide bar 430 having a certain length and provided at one side of the first body 410 ; a slider 440 formed as a cylindrical shape and movably inserted into the guide bar 430 ; a stopper 450 coupled to an end portion of the guide bar 430 for limiting a movement distance of the slider 440 ; a frictional member 460 fixedly coupled to an outer surface of the slider 440 thus to be adhered to the frictional surface 411 of the first body; and springs 470 respectively positioned at both sides of the slider 440 .
  • An outer diameter of the guide bar 430 is smaller than an inner diameter of the frictional surface 411 of the first body, and the stopper 450 of a disc shape having a certain thickness has an outer diameter smaller than the inner diameter of the frictional surface 411 of the first body.
  • One of the springs 470 which are coil springs is positioned between one side surface of the slider 440 and the stopper 450 , and the other is positioned between another side surface of the slider 440 and an end surface of the second body 420 .
  • the damper when vibration transmitted form the tub assembly 200 is less, that is, at the time of a normal state of steady state vibration, the first body 410 and the slider 440 become integral under a state that the slider 440 is adhered to the frictional surface 411 . According to this, the slider 440 is elastically supported by the springs 470 thus to be moved along the guide bar 430 , thereby absorbing vibration.
  • an object of the present invention is to provide a variable damping type damper and a washing machine having the same, and more particularly, to a variable damping type damper capable of minimizing a transmission of vibration to other components by effectively absorbing steady state vibration and transient state vibration by using a flow amount difference of air, and a washing machine having the same.
  • a variable damping type damper comprising: a cylinder provided with a receiving space having a certain depth at one side thereof; a rod relative-movably inserted into the receiving space of the cylinder; a guide bar provided at the rod; a variable volume frictional means expanded and contracted in itself by a difference of flow amount introduced/ exhausted into/from an inner space by being coupled to the guide bar, and adhered/detached to/from an inner circumferential surface of the receiving space of the cylinder; a volume type slider performing a relative movement with the variable volume frictional means by being slidably inserted into the guide bar, for causing fluid flow inside the variable volume frictional means; and a frictional member fixedly coupled to the volume type slider for generating a frictional force with the inner circumferential surface of the receiving space of the cylinder.
  • a washing machine comprising a cabinet having an inner space of a predetermined shape; and a tub positioned in the cabinet and filled with washing water, the washing machine provided with a variable damping type damper, comprising: a cylinder of which one side is provided with a receiving space having a certain depth and another side thereof is coupled to the cabinet or the tub; a rod of which one side is relative-movably inserted into the receiving space of the cylinder and another side thereof is coupled to the cabinet or the tub; a guide bar provided at an end portion of the rod; a variable volume frictional means expanded and contracted in itself by a difference of flow amount introduced/ exhausted into/from an inner space by being coupled to the guide bar, and adhered/detached to/from an inner circumferential surface of the receiving space of the cylinder; a volume type slider performing a relative movement with the variable volume frictional means by being slidably
  • FIG. 1 is a frontal section view showing one embodiment of a general washing machine
  • FIG. 2 is a frontal section view showing a damper constituting the washing machine
  • FIG. 3 is a frontal section view showing another embodiment of the damper constituting the washing machine
  • FIG. 4 is a frontal section view showing one embodiment of a variable damping type damper according to the present invention.
  • FIG. 5 is a sectional view showing the variable damping type damper by a partial enlargement
  • FIG. 6 is a frontal section view showing another embodiment of the variable damping type damper according to the present invention.
  • FIG. 7 is a frontal section view showing a washing machine provided with the variable damping type damper according to the present invention.
  • FIGS. 8, 9, 10 , and 11 are sectional views respectively showing an operational state of the variable damping type damper according to the present invention.
  • FIG. 4 is a frontal section view showing one embodiment of a variable damping type damper according to the present invention
  • FIG. 5 is a sectional view showing the variable damping type damper by a partial enlargement.
  • variable damping type damper comprises: a cylinder 510 provided with a receiving space 511 having a certain depth at one side thereof; a rod 520 relative-movably inserted into the receiving space 511 of the cylinder 510 ; a guide bar 530 provided at the rod 520 ; a variable volume frictional means B expanded and contracted in itself by a difference of flow amount introduced/exhausted into/from an inner space by being coupled to the guide bar 530 , and adhered/detached to/from an inner circumferential surface of the receiving space 511 of the cylinder 510 ; a volume type slider S performing a relative movement with the variable volume frictional means B by being slidably inserted into the guide bar 530 , for causing fluid flow inside the variable volume frictional means B; and a frictional member 550 fixedly coupled to the volume type slider S for generating a frictional force with the inner circumferential surface of the receiving space 511 of the cylinder 510 .
  • the cylinder 510 comprises a body portion 512 with a certain length; a receiving space 511 of a cylindrical shape having a certain depth in a longitudinal direction at one side of the body portion 512 ; a penetration hole 513 connected to the receiving space 511 at an outer circumferential wall of the body portion 512 ; and a coupling portion 514 formed at another side of the body portion 512 .
  • An inner circumferential surface of the receiving space 511 forms a frictional surface 515 .
  • a coupling portion 522 is formed at one side of the cylindrical body portion 512 having a certain length and outer diameter thus to constitute the rod 520 .
  • the guide bar 530 has an outer diameter smaller than an outer diameter of the cylindrical body portion 521 of the rod, and has a certain length.
  • the guide bar 530 is provided at the end of the cylindrical body portion 521 .
  • the guide bar 530 can be integrally formed with the rod 520 , or can be separately manufactured thus to be coupled to the rod 520 .
  • the variable volume frictional means B comprises a cylindrical body 560 having a certain outer diameter and a length and having one side wall coupled to an end portion of the guide bar 530 thus to be volume-varied in itself; an inflow path 561 formed at one side of the cylindrical body 560 ; an outflow path 562 having less air flow amount than the inflow path 561 and formed at another side of the cylindrical body 560 ; a first valve 570 for controlling a flow of air introduced into the cylindrical body 560 ; and a first friction ring 580 coupled to an outer circumferential surface of the cylindrical body 560 .
  • the cylindrical body 560 comprises a circumferential wall portion 563 having a certain thickness and outer diameter; a first side wall portion 564 for covering one side of the circumferential wall portion 563 ; and a second side wall portion 565 for covering another side of the circumferential wall portion 563 .
  • An end portion of the guide bar 530 is coupled to the center of the first side wall portion 564 .
  • the circumferential wall portion 563 of the cylindrical body 560 is formed of a flexible membrane to be expanded.
  • the inflow path 561 is formed at the first side wall portion 564 of the cylindrical body, and the outflow path 562 is formed at the second side wall portion 565 of the cylindrical body.
  • the inflow path 561 is formed of a plurality of penetration holes penetrated at the first side wall portion 564 , and inner diameters of the penetration holes are the same.
  • the outflow path 562 is formed of one penetration hole or a plurality of penetration holes, a size of the penetration hole of the outflow path 562 is the same as a size of the penetration hole of the inflow path 561 , and the number of the penetration holes of the outflow path 562 is less than the number of the penetration holes o the inflow path 561 . Also, an entire area of the inflow path 561 is larger than an entire area of the outflow path 562 , and shapes of the inflow path 561 and the outflow path 562 can be variously implemented.
  • the first valve 570 is mounted at the first side wall portion 564 of the cylindrical body thus to open and close the inflow path 561 .
  • the first friction ring 580 is formed of a circular shape having a certain thickness and width, and can be formed of a material expandable in a circumferential direction.
  • the first friction ring 580 does not receive a vertical force with an inner circumferential surface of the receiving space 511 of the cylinder 510 when the cylindrical body 560 is not expanded in itself, and receives the vertical force when the cylindrical body 560 is expanded in itself.
  • the volume type slider S comprises a cylindrical body 540 having a certain outer diameter and length and provided with an insertion hole 541 for penetration-inserting the guide bar 530 at the center thereof; a penetration path 542 for penetrating the cylindrical body 540 ; and a second valve 590 for opening and closing the penetration path 542 .
  • the cylindrical body 540 of the volume type slider S comprises a circumferential wall portion 543 having a certain thickness and outer diameter; a first side wall portion 544 for covering one side of the circumferential wall portion 543 ; and a second side wall portion 545 for covering another side of the circumferential wall portion 543 .
  • the insertion hole 541 is penetratingly-formed at the center of the first side wall portion 544 and at the center of the second side wall portion 545 , respectively.
  • the penetration path 542 is constituted with a plurality of penetration holes formed at the first side wall portion 544 of the cylindrical body and a plurality of penetration holes formed at the second side wall portion 545 .
  • the second valve 590 is mounted at the second side wall portion 545 of the cylindrical body thus to open and close the penetration holes formed at the second side wall portion 545 .
  • the volume type slider S is positioned between the variable volume frictional means B and the rod 520 , and a hermetic space A is formed between the variable volume frictional means B and the volume type slider S.
  • the frictional member 550 is formed as a ring shape having a certain thickness and width. Under a state that the frictional member 550 is coupled to the cylindrical body 540 of the volume type slider, when a vibration width more than a preset degree is transmitted to the frictional member 550 adhered to the frictional surface 515 of the cylinder, that is, when a force more than a preset degree is applied, the frictional member 550 performs a relative movement with the frictional surface 515 of the cylinder and thereby a frictional force is generated.
  • FIG. 6 is a frontal section view showing another embodiment of the variable damping type damper according to the present invention.
  • the same reference numbers were given to the same parts as the aforementioned variable damping type damper.
  • variable damping type damper has the same construction as the aforementioned variable damping type damper. That is, constructions of the cylinder 510 , the variable volume frictional means B, the volume type slider S, and the frictional member 550 are the same.
  • a flexible tube 600 is provided between the variable volume frictional means B and the volume type slider S.
  • the flexible tube 600 prevents collision generated when the variable volume frictional means B and the volume type slider S perform a relative movement, and prevents outflow of air.
  • FIG. 7 is a frontal section view showing a washing machine provided with the variable damping type damper according to the present invention.
  • the washing machine comprises: a cabinet 100 having an inner space of a predetermined shape; a tub assembly 200 positioned in the cabinet 100 ; a spring 110 for connecting an upper portion of the tub assembly 200 and the cabinet 100 ; a cylinder 510 of which one side is provided with a receiving space 511 having a certain depth and another side thereof is coupled to the tub assembly 200 ; a rod 520 of which one side is relative-movably inserted into the receiving space 511 of the cylinder and another side thereof is coupled to the cabinet 100 ; a guide bar 530 provided at an end portion of the rod 520 ; a variable volume frictional means B expanded and contracted in itself by a difference of flow amount introduced/exhausted into/from an inner space by being coupled to the guide bar 530 , and adhered/detached to/from an inner circumferential surface of the receiving space 511 of the cylinder; a volume type slider S performing a relative movement with the variable volume frictional means B by being slidably inserted into the guide bar
  • the tub assembly 200 comprises a tub 210 positioned in the cabinet 100 ; a drum 220 rotatably inserted into the tub 210 and through which laundry is put into; and a driving motor 230 mounted at a rear surface of the tub 210 for rotating the drum 220 .
  • One side of the cylinder 510 can be coupled to the cabinet 100 , and one side of the rod 520 can be coupled to the tub assembly 200 .
  • a water supply means for supplying washing water into the tub 210 , a drain means (not shown) for draining washing water inside the tub 210 , and a door (not shown) for opening and closing the drum 220 are provided.
  • variable volume frictional means B the volume type slider S, and the frictional member 550 have the same constructions. Accordingly, minute explanations for the variable damping type damper will be omitted.
  • variable damping type damper in a process that steady state vibration is applied to the cylinder 510 from outside, the frictional surface 515 of the cylinder 510 and the frictional member 550 are in a state of being adhered to each other and a vertical force has not been applied between the first friction ring 580 and the frictional surface 515 of the cylinder 510 . According to this, the volume type slider S, the frictional member 550 , and the cylinder 510 become integral, so that the volume type slider S moves along the guide bar 530 , and the variable volume frictional means B, the guide bar 530 , and the rod 520 do not move.
  • the frictional surface 515 of the cylinder 510 and the frictional member 550 are in a state of being adhered to each other and a vertical force has not been applied between the first friction ring 580 and the frictional surface 515 of the cylinder 510 .
  • the volume type slider S, the frictional member 550 , and the cylinder 510 become integral, so that the volume type slider S moves along the guide bar 530 , and the variable volume frictional means B, the guide bar 530 , and the rod 520 do not move.
  • variable volume frictional means B when the volume type slider S moves with a great displacement towards the variable volume frictional means B, a volume of the hermetic space A is relatively decreased and a pressure is increased. According to this, the first valve 570 of the variable volume frictional means B is opened and the second valve 590 is closed, so that air of the hermetic space A is introduced into the variable volume frictional means B through the inflow path 561 . A part of the air introduced into the variable volume frictional means B is exhausted outwardly through the outflow path 562 , and by the rest air, the variable volume frictional means B is expanded thus to be adhered to the frictional surface of the cylinder 510 .
  • variable volume frictional means B since the inflow path 561 of the variable volume frictional means B is larger than the outflow path 562 , when a large amount of air is momentarily introduced into variable volume frictional means B, all the introduced air are not exhausted outwardly through the outflow path 562 thus to expand a volume of the cylindrical body 560 of the variable volume frictional means. According to this, the first friction ring 580 is adhered to the frictional surface 515 of the cylinder thus to cause a frictional force. A degree of the frictional force can be different by controlling sizes of the inflow path 561 and the outflow path 562 of the variable volume frictional means B.
  • variable damping type damper absorbs both steady state vibration and transient state vibration.
  • the washing machine is operated by a washing operation, a rinsing operation, and a dehydration operation as a general one.
  • transient state vibration is generated from the tub assembly 200 and the vibration is transmitted to the variable damping type damper 500 .
  • the variable damping type damper 500 is operated in a transient state vibration mode thus to absorb transient state vibration. According to this, a transmission of transient state vibration generated from the tub assembly 200 to the cabinet 100 is minimized.
  • variable damping type damper absorbs both steady state vibration and transient state vibration transmitted from another system by using a flow amount difference of air, thereby preventing vibration from being transmitted to other components.
  • a reliability and a stability of a system to which the variable damping type damper is applied can be enhanced.
  • transient state vibration and steady state vibration generated from the tub assembly 200 are prevented from being transmitted to the cabinet 100 during the entire process for washing laundry, thereby minimizing vibration noise leaked to outside and thus enhancing a reliability of a product.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US10/753,494 2003-05-15 2004-01-09 Variable damping type damper and washing machine having the same Abandoned US20040226321A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0031012A KR100471122B1 (ko) 2003-05-15 2003-05-15 세탁기 댐퍼
KR2003-0031012 2003-05-15

Publications (1)

Publication Number Publication Date
US20040226321A1 true US20040226321A1 (en) 2004-11-18

Family

ID=33028874

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/753,494 Abandoned US20040226321A1 (en) 2003-05-15 2004-01-09 Variable damping type damper and washing machine having the same

Country Status (4)

Country Link
US (1) US20040226321A1 (ko)
EP (1) EP1477603A1 (ko)
KR (1) KR100471122B1 (ko)
CN (1) CN1312347C (ko)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040261469A1 (en) * 2003-05-13 2004-12-30 Park Seung Chul Damper for washing machine
US20060096328A1 (en) * 2004-11-10 2006-05-11 Samsung Electronics Co., Ltd. Drum-type washing machine having damper and method
US20070283511A1 (en) * 2006-06-13 2007-12-13 Suspa Holding Gmbh Method for determining the load in a washing machine
US20080295544A1 (en) * 2007-05-28 2008-12-04 Cheon-Soo Cho Laundry machine
US20120060567A1 (en) * 2009-05-28 2012-03-15 Kwon Ig Geun Laundry machine
WO2014035183A1 (en) * 2012-08-31 2014-03-06 Lg Electronics Inc. Washing machine
US8800165B2 (en) 2009-05-28 2014-08-12 Lg Electronics Inc. Laundry machine having a drying function
US9051679B2 (en) 2009-05-28 2015-06-09 Lg Electronics Inc. Laundry machine
US9103063B2 (en) 2009-05-28 2015-08-11 Lg Electronics Inc. Laundry machine with suspension assembly
WO2015190854A1 (en) * 2014-06-11 2015-12-17 Lg Electronics Inc. Washing machine
KR20160026933A (ko) * 2016-02-17 2016-03-09 엘지전자 주식회사 수평 진동 감쇄부 및 이를 구비한 세탁기
US9284677B2 (en) 2009-05-28 2016-03-15 Lg Electronics Inc. Laundry machine
US9447534B2 (en) 2008-12-30 2016-09-20 Lg Electronics Inc. Laundry machine
US9828715B2 (en) 2009-05-28 2017-11-28 Lg Electronics Inc. Laundry maching having a drying function
RU2645659C2 (ru) * 2013-07-22 2018-02-26 ЭлДжи ЭЛЕКТРОНИКС ИНК. Устройство для обработки белья
US20180142754A1 (en) * 2015-04-30 2018-05-24 Qingdao Haier Washing Machine Co., Ltd. Variable Damping Shock Absorber and Washing Machine
KR101934061B1 (ko) * 2016-02-17 2018-12-31 엘지전자 주식회사 세탁기
KR101934054B1 (ko) * 2016-02-17 2018-12-31 엘지전자 주식회사 진동 감쇄부 및 이를 구비한 세탁기
US20190136435A1 (en) * 2017-09-29 2019-05-09 E.G.O. Elektro-Geraetebau Gmbh Spring device for spring-mounting a functional unit of an electrical appliance, and method for influencing a spring device of this kind
US10288140B2 (en) 2015-01-23 2019-05-14 Qingdao Haier Washing Machine Co., Ltd. Variable damping shock absorber
US10400379B2 (en) * 2015-03-16 2019-09-03 Lg Electronics Inc. Laundry processing apparatus

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038133B4 (de) 2008-08-18 2012-03-15 Miele & Cie. Kg Dämpfer für eine Waschmaschine
JP5659842B2 (ja) * 2011-02-16 2015-01-28 パナソニックＩｐマネジメント株式会社 ドラム式洗濯機
KR101398083B1 (ko) 2013-05-27 2014-06-27 주식회사 썬 프레인 코 플라스틱 재질 상부튜브가 결합된 마찰댐퍼
DE102013109198A1 (de) * 2013-08-26 2015-02-26 Miele & Cie. Kg Reibungsdämpfer, insbesondere für Trommelwaschmaschinen
CN106460288B (zh) * 2014-03-11 2019-04-09 Lg电子株式会社 洗涤物处理装置
CN104948631A (zh) * 2015-07-03 2015-09-30 上海上材减振科技有限公司 一种并联式可调变摩擦阻尼器
CN108660686B (zh) * 2017-03-27 2021-05-25 青岛胶南海尔洗衣机有限公司 减震器和包括该减震器的洗衣机
CN108589178B (zh) * 2018-05-21 2021-02-05 无锡小天鹅电器有限公司 减震装置和衣物处理装置
CN110965267B (zh) * 2018-09-29 2022-05-24 青岛海尔洗衣机有限公司 一种洗衣机减震器及洗衣机
CN111486191B (zh) * 2019-01-29 2023-01-24 青岛海尔洗涤电器有限公司 一种变阻尼减震器及装有该减震器的洗衣机及控制方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264014B1 (en) * 1996-12-09 2001-07-24 Roberto Ferlicca Friction damper for washing machines or the like

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3016915A1 (de) * 1980-05-02 1981-11-05 Fritz Bauer + Söhne oHG, 8503 Altdorf Schwingungsfaehige abstuetzung fuer waschmaschinen
IT1253898B (it) * 1991-11-27 1995-08-31 Sebac Ind Srl Ammortizzatore, in particolare utilizzabile in macchine lavabiancheria

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264014B1 (en) * 1996-12-09 2001-07-24 Roberto Ferlicca Friction damper for washing machines or the like

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040261469A1 (en) * 2003-05-13 2004-12-30 Park Seung Chul Damper for washing machine
US7472567B2 (en) * 2003-05-13 2009-01-06 Lg Electronics Inc. Damper for washing machine
US20060096328A1 (en) * 2004-11-10 2006-05-11 Samsung Electronics Co., Ltd. Drum-type washing machine having damper and method
US20070283511A1 (en) * 2006-06-13 2007-12-13 Suspa Holding Gmbh Method for determining the load in a washing machine
US8312581B2 (en) * 2006-06-13 2012-11-20 Suspa Gmbh Method for determining the load in a washing machine
US20080295544A1 (en) * 2007-05-28 2008-12-04 Cheon-Soo Cho Laundry machine
US9447534B2 (en) 2008-12-30 2016-09-20 Lg Electronics Inc. Laundry machine
US9103063B2 (en) 2009-05-28 2015-08-11 Lg Electronics Inc. Laundry machine with suspension assembly
US9284677B2 (en) 2009-05-28 2016-03-15 Lg Electronics Inc. Laundry machine
US9051679B2 (en) 2009-05-28 2015-06-09 Lg Electronics Inc. Laundry machine
US9828715B2 (en) 2009-05-28 2017-11-28 Lg Electronics Inc. Laundry maching having a drying function
US9194073B2 (en) 2009-05-28 2015-11-24 Lg Electronics Inc. Laundry machine having a drying function
US9200838B2 (en) 2009-05-28 2015-12-01 Lg Electronics Inc. Laundry machine having a drying function
US9200837B2 (en) 2009-05-28 2015-12-01 Lg Electronics, Inc. Laundry machine having a drying function
US20120060567A1 (en) * 2009-05-28 2012-03-15 Kwon Ig Geun Laundry machine
US9255353B2 (en) 2009-05-28 2016-02-09 Lg Electronics Inc. Laundry machine having a drying function
US9422657B2 (en) 2009-05-28 2016-08-23 Lg Electronics Inc. Washing machine
US8800165B2 (en) 2009-05-28 2014-08-12 Lg Electronics Inc. Laundry machine having a drying function
US10023988B2 (en) 2012-08-31 2018-07-17 Lg Electronics Inc. Washing machine
KR101934735B1 (ko) * 2012-08-31 2019-01-03 엘지전자 주식회사 세탁기
WO2014035183A1 (en) * 2012-08-31 2014-03-06 Lg Electronics Inc. Washing machine
US10023989B2 (en) 2013-07-22 2018-07-17 Lg Electronics Inc. Laundry treatment apparatus
RU2645659C2 (ru) * 2013-07-22 2018-02-26 ЭлДжи ЭЛЕКТРОНИКС ИНК. Устройство для обработки белья
US9915018B2 (en) 2014-06-11 2018-03-13 Lg Electronics Inc. Washing machine
WO2015190854A1 (en) * 2014-06-11 2015-12-17 Lg Electronics Inc. Washing machine
US10288140B2 (en) 2015-01-23 2019-05-14 Qingdao Haier Washing Machine Co., Ltd. Variable damping shock absorber
US10400379B2 (en) * 2015-03-16 2019-09-03 Lg Electronics Inc. Laundry processing apparatus
US20180142754A1 (en) * 2015-04-30 2018-05-24 Qingdao Haier Washing Machine Co., Ltd. Variable Damping Shock Absorber and Washing Machine
KR20160026933A (ko) * 2016-02-17 2016-03-09 엘지전자 주식회사 수평 진동 감쇄부 및 이를 구비한 세탁기
KR101934061B1 (ko) * 2016-02-17 2018-12-31 엘지전자 주식회사 세탁기
KR101934054B1 (ko) * 2016-02-17 2018-12-31 엘지전자 주식회사 진동 감쇄부 및 이를 구비한 세탁기
KR101984298B1 (ko) * 2016-02-17 2019-05-30 엘지전자 주식회사 수평 진동 감쇄부 및 이를 구비한 세탁기
US20190136435A1 (en) * 2017-09-29 2019-05-09 E.G.O. Elektro-Geraetebau Gmbh Spring device for spring-mounting a functional unit of an electrical appliance, and method for influencing a spring device of this kind
US10844532B2 (en) * 2017-09-29 2020-11-24 E.G.O. Elektro-Geraetebau Gmbh Spring device for spring-mounting a functional unit of an electrical appliance, and method for influencing a spring device of this kind

Also Published As

Publication number Publication date
CN1550606A (zh) 2004-12-01
KR100471122B1 (ko) 2005-03-10
CN1312347C (zh) 2007-04-25
EP1477603A1 (en) 2004-11-17
KR20040098767A (ko) 2004-11-26

Similar Documents

Publication Publication Date Title
US20040226321A1 (en) Variable damping type damper and washing machine having the same
EP1455011B1 (en) Combination type damper and washing machine having the same
JP2004209254A (ja) ドラム洗濯機
US10011936B2 (en) Laundry processing machine
US20060010935A1 (en) Damper and washing machine having the damper
CN108796997B (zh) 一种洗衣机
JP4893504B2 (ja) 洗濯機
US11377776B2 (en) Laundry treating apparatus
US20170167069A1 (en) Water supply device and washing machine having the same
US20200248371A1 (en) Laundry treating apparatus
KR20120129004A (ko) 배수호스와 이를 가지는 세탁기
CN100532685C (zh) 洗衣机用阻尼器
US6122942A (en) Washing machine having dual damping structure
KR100636721B1 (ko) 세탁기용 댐퍼
JP4858138B2 (ja) 洗濯機
KR101916438B1 (ko) 세탁물 처리기기
KR101929485B1 (ko) 세탁물 처리기기
JPH08206388A (ja) 脱水洗濯機
JP3907646B2 (ja) ドラム式洗濯機
KR102413331B1 (ko) 의류처리장치
JP2007061123A (ja) 洗濯機
KR200465465Y1 (ko) 세탁기
KR200233841Y1 (ko) 세탁기의완충장치
KR20120007521U (ko) 세탁기
JP2001224893A (ja) ドラム式洗濯機

Legal Events

Date Code Title Description
AS Assignment

Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PARK, GWAN-RYONG;KIM, JAE-HYUN;PARK, SEUNG-CHUL;REEL/FRAME:014881/0224

Effective date: 20031222

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION