KR101197282B1 - Suspension damper having magneto rheological fluid type for washing machine - Google Patents

Suspension damper having magneto rheological fluid type for washing machine Download PDF

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KR101197282B1
KR101197282B1 KR1020100038374A KR20100038374A KR101197282B1 KR 101197282 B1 KR101197282 B1 KR 101197282B1 KR 1020100038374 A KR1020100038374 A KR 1020100038374A KR 20100038374 A KR20100038374 A KR 20100038374A KR 101197282 B1 KR101197282 B1 KR 101197282B1
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South Korea
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damper
washing machine
tip
cylinder
yokes
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KR1020100038374A
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Korean (ko)
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KR20110118952A (en
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박남훈
박찬익
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주식회사 삼코
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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
    • 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
    • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
    • D06F37/245—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • 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
    • 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
    • D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/16—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material
    • 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
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
    • F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
    • F16F3/06—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs of which some are placed around others in such a way that they damp each other by mutual friction
    • 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

Abstract

본 발명은 세탁기의 세탁 및 탈수 작용시 세탁 통에서 발생하는 진동과 소음을 감소시키는 댐퍼에 관한 것으로, 더욱 상세하게는 자기유변유체(Magneto Reologicla fluid)를 댐퍼의 로드에 적용시키어 진동과 소음을 현격하게 저감시킬 수 있는 세탁기용 자기유변유체 현가댐퍼에 관한 것이다.
이를 위해 본 발명은 한쪽 선단에 축(1)이 고정되는 실린더(2)와, 상기 실린더(2)의 다른 쪽 선단에는 스프링 시트(3)와 캡(4) 사이에 배치되는 스프링(5)으로 탄지되고 실린더(2) 내부에서 양쪽 선단 및 중간 오일씰(6a,6b,6c)로 밀봉되면서 댐퍼부(7)의 상하부 베어링(8a,8b)이 접촉되는 로드(9)를 구비하여 이루어진 세탁기용 현가댐퍼에 있어서, 상기 댐퍼부(7)는 상하부 베어링(8a,8b) 사이에서 양쪽 선단 오일씰(6a,6b)에 접한 선단 요크(10a,10b)들과 상기 선단 요크(10a,10b)들에 이격되어 중간 요크(10c)가 설치되고, 이 선단 요크(10a,10b)들과 중간 요크(10c) 사이에는 제 1, 2 솔레노이드 조립부(11a,11b)가 배치되며, 상기 로드(9)의 내경과 중간 요크(10c)의 외경 및 제 1, 2 솔레노이드 조립부(11a,11b)의 내경이 접하는 틈새 부분에는 제 1, 2 솔레노이드 조립부(11a,11b)들의 자기장 부여에 따라 작용하는 자기유변유체(12)가 내장되어 이루어진 구조로 되어 있다.The present invention relates to a damper for reducing vibration and noise generated in a laundry tub during washing and dehydration of a washing machine. More specifically, the magneto-reologicla fluid is applied to a rod of a damper to increase vibration and noise. It relates to a magnetorheological fluid suspension damper for a washing machine that can be reduced.
To this end, the present invention is a cylinder (2) to which the shaft (1) is fixed to one end, and the other end of the cylinder (2) with a spring (5) disposed between the spring seat (3) and the cap (4) Suspension for washing machine, which is provided with a rod 9 which is hardened and sealed with both front and middle oil seals 6a, 6b, 6c inside the cylinder 2, and the upper and lower bearings 8a, 8b of the damper portion 7 contact with each other. In the damper, the damper portion 7 is spaced apart from the tip yokes 10a, 10b and the tip yokes 10a, 10b in contact with both tip oil seals 6a, 6b between the upper and lower bearings 8a, 8b. The intermediate yoke 10c is installed, and the first and second solenoid assembly portions 11a and 11b are disposed between the tip yokes 10a and 10b and the intermediate yoke 10c, and the inner diameter of the rod 9 is provided. Magnetic field of the first and second solenoid assembly portions 11a and 11b in a gap portion where the outer diameter of the middle yoke 10c and the inner diameters of the first and second solenoid assembly portions 11a and 11b are in contact with each other. There is a built-in self-rheological fluid 12 is made of the structure which acts in accordance with the W.

Figure R1020100038374
Figure R1020100038374

Description

세탁기용 자기유변유체형 현가댐퍼{Suspension damper having magneto rheological fluid type for washing machine}Suspension damper having magneto rheological fluid type for washing machine

본 발명은 세탁기의 세탁 및 탈수 작용시 세탁통에서 발생하는 진동과 소음을 감소시키는 댐퍼에 관한 것으로, 더욱 상세하게는 자기유변유체(Magneto Reologicla fluid)를 댐퍼의 로드에 적용시키어 진동과 소음을 현격하게 저감시킬 수 있는 세탁기용 자기유변유체 현가댐퍼에 관한 것이다.The present invention relates to a damper for reducing vibration and noise generated in a laundry container during washing and dehydration of a washing machine. More particularly, the magneto-reologicla fluid is applied to a rod of a damper to vibrate vibration and noise. A magnetorheological fluid suspension damper for a washing machine can be reduced.

세탁기에는 세탁물을 회전시키어 세탁 및 탈수하는 세탁통이 3점 또는 2점 지지 방식으로 본체에 지지되어 있으면서 이 세탁통의 회전시 발생하는 진동과 충격을 흡수하기 위해 여러 개의 현가댐퍼가 설치되어 있다.The washing machine is supported by the main body in a three- or two-point support system for washing and dewatering laundry by rotating the laundry, and a plurality of suspension dampers are installed to absorb vibrations and shocks generated when the laundry is rotated.

여기서 현가댐퍼는 세탁 및 탈수 작용시 회전하는 세탁통의 진동과 충격 및 소음을 흡수 저감할 뿐만 아니라, 이 댐퍼 자체에서 세탁통에 보유 지지력을 제공하여 별도의 현가(Suspension) 지지품을 필요치 않게 되어 있다.Here, the suspension damper not only absorbs and reduces the vibration, shock and noise of the rotating laundry tub during washing and dehydration, but also provides a holding force to the laundry tub from the damper itself, thereby eliminating the need for a separate suspension support.

종래에도 세탁기 작동시 소음과 진동 저감을 위해 댐퍼를 설치하였으나, 세탁시 세탁통의 세탁물이 한쪽으로 쏠리어 발생하는 진동과 소음발생을 효과적으로 감쇄시키지 못하였으며, 늦은 밤 세탁기 작동으로 인한 아파트 층간 소음문제 야기 및, 큰 이불과 같은 빨랫감을 세탁시 과도한 떨림 현상으로 발생하는 소음과 진동의 불안정성 등이 여전히 남아 있는 문제점이 있었다.Conventionally, dampers have been installed to reduce noise and vibration when the washing machine is operating.However, the washing machine does not effectively attenuate the vibration and noise generated when the laundry in the laundry box is pulled to one side, causing noise between floors of the apartment due to late night washing machine operation. And, there was a problem that the noise and vibration instability caused by excessive shaking when washing the laundry, such as a large blanket still remains.

한편, 종래 이와 같은 세탁기용 댐퍼 중 본 출원인에 의해 등록된 대한민국 실용신안등록 제410,220호와 실용신안등록 제383,889호 및 실용신안등록 제372,686호와 같은 세탁기용 댐퍼들을 일정한 댐퍼력으로 유지하고 진동 저감이 이루어지는 댐퍼들이나, 진동과 소음 발생에 대한 저감력을 앞서 설명한 바와 같이 개선 시킬 필요가 있었다.Meanwhile, among such dampers for washing machines, dampers for washing machines, such as Korean Utility Model Registration No. 410,220 and Utility Model Registration No. 383,889 and Utility Model Registration No. 372,686, registered by the present applicant, are maintained at a constant damper force to reduce vibration. The dampers, or the damping force against vibration and noise generation, need to be improved as described above.

이에 본 발명은 상기와 같은 종래 문제점을 감안하여 발명된 것으로, 종래 세탁기용 댐퍼에 비하여 진동과 소음저감이 현저하게 이루어지면서 세탁 및 탈수시 세탁기의 안정성 확보와 상하충격, 진동을 빠른 응답성으로 신속하게 흡수 저감할 수 있도록 이루어진 세탁기용 자기유변유체형 현가댐퍼를 제공함에 그 목적이 있다.Therefore, the present invention was invented in view of the conventional problems as described above, while the vibration and noise reduction is remarkably made as compared with the conventional damper for washing machine, while ensuring the stability of the washing machine during washing and dehydration, up and down impact, and quick response with rapid response. It is an object of the present invention to provide a magnetorheological fluid suspension damper for a washing machine capable of reducing absorption.

상기와 같은 목적을 달성하기 위한 본 발명은 한쪽 선단에 축이 고정되는 실린더와, 상기 실린더의 다른 쪽 선단에는 스프링 시트와 캡 사이에 배치되는 스프링으로 탄지되고 실린더 내부에서 양쪽 선단과 중간 오일씰을 매개로 밀봉되면서 댐퍼부의 상하부 베어링이 접촉되는 로드를 구비하여 이루어진 세탁기용 현가댐퍼에 있어서, 상기 댐퍼부는 상하부 베어링 사이에서 양쪽 선단 오일씰에 접한 선단 요크들과 중간 요크가 설치되고, 상기 선단 요크들과 중간 요크 사이에는 제 1, 2 솔레노이드 조립부가 배치되며, 로드의 외경과 중간 요크의 내경 및 제 1, 2 솔레노이드 조립부의 내경이 접하는 틈새 부분에는 자기유변유체가 내장되어 이루어진 구조로 되어 있다.The present invention for achieving the above object is supported by a cylinder that is fixed to one end of the shaft, the spring is disposed between the spring seat and the cap on the other end of the cylinder and mediates both ends and the middle oil seal inside the cylinder. Suspension damper for washing machine comprising a rod which is contacted with the upper and lower bearings of the damper portion while being sealed with the damper portion, wherein the damper portion is provided with front yokes and intermediate yokes in contact with both front end oil seals between the upper and lower bearings, and the intermediate yokes and the intermediate yokes. The first and second solenoid assembly portions are disposed between the yokes, and a magnetorheological fluid is incorporated in the gap portion where the outer diameter of the rod and the inner diameter of the middle yoke and the inner diameter of the first and second solenoid assembly portions are in contact with each other.

상기와 같은 본 발명에 따른 세탁기용 자기유변유체형 현가댐퍼는 세탁기 작동시 자기유변유체가 적용된 댐퍼부에 의하여 빠른 응답성으로 세탁기의 진동 및 충격 및 소음을 분산 저감시키면서 세탁기의 떨림 발생을 억제하여 안정성 확보도 이루어지는 기능과 효과를 지닌다.The magnetorheological fluid type suspension damper for a washing machine according to the present invention as described above is suppressed by the vibration of the washing machine while reducing the vibration, shock and noise of the washing machine with a quick response by the damper part to which the magnetorheological fluid is applied when the washing machine is operated. It also has the function and effect to ensure stability.

도 1은 본 발명에 따른 세탁기용 자기유변유체형 현가댐퍼의 외관 사시도,
도 2는 도 1의 단면도,
도 3은 본 발명의 요부 확대 단면도,
도 4는 세탁기의 세탁통에 발생하는 전단력에 대해 회전 RPM을 나타낸 그래프로서, 본 발명의 자기유변유체형 댐퍼력과 고저(High and Low) 댐퍼력의 비교 그래프이다.1 is an external perspective view of a magnetorheological fluid suspension damper for a washing machine according to the present invention;
Fig. 2 is a sectional view of Fig. 1,
3 is an enlarged cross-sectional view of the main portion of the present invention;
Figure 4 is a graph showing the rotational RPM against the shear force generated in the washing tub of the washing machine, a graph of comparison of the magnetorheological fluid damper force and the high and low damper force of the present invention.

이하, 본 발명은 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 세탁기용 자기유변유체형 현가댐퍼의 외관 시시도이고, 도 2는 도 1의 단면도이며, 도 3은 본 발명의 요부 확대 단면도이다.1 is an external perspective view of a magnetorheological fluid type suspension damper for a washing machine according to the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is an enlarged cross-sectional view of main parts of the present invention.

본 발명은 세탁기의 세탁통과 본체 사이에 현가 설치되어 세탁통 회전 작동시 진동과 충격 및 소음을 저감시키는 현가댐퍼로서, 도면에 도시된 바와 같이 한쪽 선단에 축(1)이 고정되는 실린더(2)와, 상기 실린더(2)의 다른 쪽 선단에는 스프링 시트(3)와 캡(4) 사이에 배치되는 스프링(5)으로 탄지되고 실린더(2) 내부에서 여러 개의 오일씰(6a,6b,6c)로 밀봉되면서 댐퍼부(7)의 상하부 베어링(8a,8b)이 접촉되는 로드(9)를 구비하여 이루어진 세탁기용 현가댐퍼에 있어서, 상기 댐퍼부(7)는 상하부 베어링(8a,8b) 사이에서 양쪽 선단 오일씰(6a,6b)에 접한 선단 요크(10a,10b)들과 상기 선단 요크(10a,10b)들에 이격되어 중간 요크(10c)가 설치되고, 상기 선단 요크(10a,10b)들과 중간 요크(10c) 사이에는 제 1, 2 솔레노이드 조립부(11a,11b)가 배치되며, 상기 로드(9)의 외경과 중간 요크(10c)의 내경 및 제 1, 2 솔레노이드 조립부(11a,11b)의 내경이 접하는 틈새 부분에는 제 1, 2 솔레노이드 조립부(11a,11b)들의 자기장 부여에 따라 작용하는 자기유변유체(12)가 로드(9)의 중간에서 중간요크(10c)를 사이에 두고 양쪽 선단요크(10a,10b) 사이에 접하는 공간에 내장되어 이루어진 구조로 되어 있다.The present invention is a suspension damper is installed between the washing tub and the main body of the washing machine to reduce vibration, shock and noise during the rotating operation of the washing tub, the cylinder (2) is fixed to the shaft (1) at one end as shown in the figure; On the other end of the cylinder (2), it is supported by a spring (5) disposed between the spring seat (3) and the cap (4) and sealed with several oil seals (6a, 6b, 6c) inside the cylinder (2) Suspension damper for washing machine comprising a rod (9) in which the upper and lower bearings (8a, 8b) of the damper portion (7) is in contact with the damper portion (7), the damper portion (7) between the upper and lower bearings (8a, 8b) End yokes 10a and 10b in contact with oil seals 6a and 6b and intermediate yokes 10c are spaced apart from the end yokes 10a and 10b, and the end yokes 10a and 10b and intermediate yokes First and second solenoid assembly portions 11a and 11b are disposed between the portions 10c, and the outer diameter and the middle yaw of the rod 9 are disposed. The magnetorheological fluid 12 which acts according to the provision of the magnetic fields of the first and second solenoid assembly parts 11a and 11b to the gap portion where the inner diameter of the 10c and the inner diameters of the first and second solenoid assembly parts 11a and 11b contact each other. Is built in a space between the front end yokes 10a and 10b with the intermediate yoke 10c in the middle of the rod 9.

여기서 상기 댐퍼부(7)의 양쪽 선단 및 중간 오일씰(6a,6b)들과 선단 및 중간 요크들(10a,10b,10c) 사이에 설치되는 중간 오일씰(6c)들은 자기유변유체(12)를 밀봉시키는 역할을 가지며, 상기 실린더(2) 내부와 로드(9) 외경 둘레에 설치되는 야쪽 선단 및 중간 오일씰(6a,6b,6c)들과 선단 및 중간 요크(10a,10b,10c), 베어링(8a,8b) 및, 자기유변유체(12)로 이루어진 댐퍼부(7)는 실린더(2)의 외부에서 V형의 롤러로 눌러 고정시키는 파이프 롤링(14)의 걸림턱에 의하여 고정되도록 되어 있다.
그리고, 상기 중간 오일씰(6c)은 중간요크(10c)의 양쪽으로 설치되면서 제 1, 2 솔레노이드 조립부(11a,11b) 면과 접하도록 되어 있으므로, 상기 제 1, 2 솔레노이드 조립부(11a,11b)와 중간요크(10c)의 횡방향으로의 오일 유실을 막아주는 역할을 한다.Here, the intermediate oil seals 6c installed between both front and middle oil seals 6a and 6b of the damper part 7 and the front and middle yokes 10a, 10b and 10c seal the magnetorheological fluid 12. It has a role to make, and the front end and the middle oil seals (6a, 6b, 6c) and the front and middle yoke (10a, 10b, 10c), the bearing (8a) is installed around the inside of the cylinder (2) and the outer diameter of the rod (9) 8b) and the damper portion 7 made of the magnetorheological fluid 12 are fixed by the locking jaw of the pipe rolling 14 which is pressed by the V-shaped roller from the outside of the cylinder 2.
In addition, since the intermediate oil seal 6c is installed on both sides of the intermediate yoke 10c to be in contact with the surfaces of the first and second solenoid assembly parts 11a and 11b, the first and second solenoid assembly parts 11a and 11b are provided. ) And the middle yoke (10c) serves to prevent oil loss in the transverse direction.

또한 상기 실린더(2)에는 제 1, 2 솔레노이드 조립부(11a,11b)에 전선(13)을 연결하는 전선리드 와이어 구멍(15)이 형성되어 있으며, 상기 상부 베어링(8a)은 베어링 케이스(16)로 부유지지하고 하부 베어링(8b)은 캡(4)으로 각각 보유지지한다.In addition, the cylinder 2 is formed with wire lead wire holes 15 for connecting the wires 13 to the first and second solenoid assembly portions 11a and 11b, and the upper bearing 8a is a bearing case 16. ) And the lower bearing 8b is held by the cap 4, respectively.

한편, 본 발명에 적용된 자기유변유체(12)는 기히 공지된 바와 같이 광물 오일 또는 실리콘 오일매체로 미크론 크기의 자화입자를 분산시켜 만든 유체인데, 자기장이 가해지면 자화입자들이 수 밀리초 내에 체인을 형성하여 고체상태로 굳어지는 점성변화를 하는 유체이다.Meanwhile, the magnetorheological fluid 12 applied to the present invention is a fluid made by dispersing micron-sized magnetized particles in mineral oil or silicone oil medium, as known in the art, and when the magnetic field is applied, the magnetized particles form a chain within a few milliseconds. It is a fluid that forms and hardens into a solid state.

이어 본 발명의 작용을 설명한다.Next, the operation of the present invention will be described.

일반적으로 세탁기는 초기 과진동시 도 4의 그래프처럼 A ~ C 구간에서 높은 댐퍼력이 필요하고 정상 RPM 시에 낮은 댐퍼력이 필요하게 된다.In general, the washing machine requires a high damper force in the period A ~ C during the initial over-vibration, and a low damper force at normal RPM.

도 4의 그래프에서와 같이 높은(High) 댐퍼력은 A ~ C 구간에서 낮은 진동이지만 정상 RPM에서는 높은 진동이 발생하고, 낮은(Low) 댐퍼력은 A ~ C 구간에서 높은 진동이지만 정상 RPM에서는 낮은 진동이 발생한다.As shown in the graph of Figure 4, the high damper force is a low vibration in the period A ~ C but high vibration occurs in the normal RPM, the low damper force is a high vibration in the period A ~ C but low in the normal RPM Vibration occurs.

그러나 본 발명에 적용된 자기유변유체(12)를 적용한 댐퍼부(7)는 전선(13)을 통하여 입력전압을 인가 및 차단 조절하면, 댐퍼력 조절이 가능하게 이루어진다.However, the damper portion 7 to which the magnetorheological fluid 12 applied to the present invention is applied to the damper force by applying and blocking the input voltage through the wire 13.

이에 따라 A ~ C 구간에서는 높은 댐퍼력을 부여하고 정상 RPM에서는 낮은 댐퍼력의 조절이 가능함에 따라 세탁시 세탁기의 진동, 충격 및 소음 발생을 적절하게 조절 저감하여 항상 저진동을 유지할 수 있는 것이다.Accordingly, the high damper force is given in the A ~ C section, and the low damper force can be adjusted at the normal RPM, so that the vibration, shock and noise of the washing machine can be properly controlled and reduced during washing to always maintain low vibration.

즉, 본 발명의 댐퍼부(7)는 세탁기의 구동 초기 과정시 제 1, 2 솔레노이드 조립부(11a,11b)에 전원을 인가하여 자기장이 자기유변유체(12)를 점성을 변화시켜 로드(9)의 외경을 구속하여 댐퍼력을 구속시키고, 정상 RPM에서는 제 1, 2 솔레노이드 조립부(11a,11b)의 전원을 차단하여 자기유변유체(12)를 유체상태로 유지시켜 로드(9)의 댐퍼력을 낮추도록 되어 있다.That is, the damper part 7 of the present invention applies power to the first and second solenoid assembly parts 11a and 11b during the initial process of driving the washing machine so that the magnetic field changes the viscosity of the magnetorheological fluid 12 so that the rod 9 The damper force is constrained by constraining the outer diameter, and at normal RPM, the power supply of the first and second solenoid assembly portions 11a and 11b is cut off to maintain the magnetorheological fluid 12 in a fluid state, thereby damping the damper of the rod 9. It is supposed to lower the force.

이 같이 본 발명은 자기유변유체(12)를 이용한 댐퍼를 이용하여 솔레노이드의 전원인가에 의해 신속한 응답성으로 댐퍼력을 변화시킴에 따라 축과 로드에서 발생하는 진동과 소음을 빠르게 흡수 및 분산시킬 수 있다.As described above, the present invention can quickly absorb and disperse vibration and noise generated in the shaft and the rod by changing the damper force with quick response by applying the solenoid power by using the damper using the magnetorheological fluid 12. have.

1 : 축, 2 : 실린더,
3 : 스프링 시트, 4 : 스프링,
5 : 스프링, 6a,6b,6c : 오일씰(Oil Seal),
7 : 댐퍼부, 8a,8b : 베어링,
9 : 로드(Rod), 10a,10b,10c : 요크,
11a,11b : 솔레노이드 조립부,
12 : 자기유변유체(Magneto Rheological Fluid),
13 : 전선, 14 : 파이프 롤링(Pipe Rolling),
15 : 전선리드 와이어 구멍(Lead wire hole),
16 : 베어링 케이스.1 axis, 2 cylinders,
3: spring seat, 4: spring,
5: spring, 6a, 6b, 6c: oil seal,
7: damper portion, 8a, 8b: bearing,
9: rod, 10a, 10b, 10c: yoke,
11a, 11b: solenoid assembly,
12: magneto Rheological Fluid,
13: wire, 14: pipe rolling,
15: lead wire hole,
16: bearing case.

Claims (2)

한쪽 선단에 축(1)이 고정되는 실린더(2)와, 상기 실린더(2)의 다른 쪽 선단에는 스프링 시트(3)와 캡(4) 사이에 배치되는 스프링(5)으로 탄지되고 실린더(2) 내부에서 양쪽 선단 및 중간 오일씰(6a,6b,6c)로 밀봉되면서 댐퍼부(7)의 상하부 베어링(8a,8b)이 접촉되는 로드(9)를 구비하여 이루어진 세탁기용 현가댐퍼에 있어서,
상기 댐퍼부(7)는 상하부 베어링(8a,8b) 사이에서 양쪽 선단 오일씰(6a,6b)에 접한 선단 요크(10a,10b)들과 상기 선단 요크(10a,10b)들에 이격되어 중간 요크(10c)가 설치되고, 상기 선단 요크(10a,10b)들과 중간 요크(10c) 사이에는 제 1, 2 솔레노이드 조립부(11a,11b)가 배치되며, 상기 로드(9)의 내경과 중간 요크(10c)의 외경 및 제 1, 2 솔레노이드 조립부(11a,11b)의 내경이 접하는 틈새 부분에는 제 1, 2 솔레노이드 조립부(11a,11b)들의 자기장 부여에 따라 작용하는 자기유변유체(12)가 로드(9)의 중간에서 중간요크(10c)를 사이에 두고 양족 선단요크(10a,10b) 사이에 접하는 공간에 내장되어 이루어진 것을 특징으로 하는 세탁기용 자기유변유체형 현가댐퍼.The cylinder 2 is fixed to one end of the shaft 2, and the other end of the cylinder 2 is supported by a spring 5 disposed between the spring seat 3 and the cap 4 and the cylinder 2 Suspension damper for washing machine comprising a rod (9) in which both upper and lower bearings (8a, 8b) of the damper portion (7a) are sealed while being sealed with both ends and intermediate oil seals (6a, 6b, 6c) inside.
The damper portion 7 is spaced apart from the tip yokes 10a and 10b between the top and bottom bearings 8a and 8b and the tip yokes 10a and 10b in contact with the tip oil seals 6a and 6b, respectively. 10c) is installed, and first and second solenoid assembly portions 11a and 11b are disposed between the front yokes 10a and 10b and the middle yoke 10c, and the inner diameter of the rod 9 and the middle yoke ( A magnetorheological fluid 12 acting in accordance with the application of the magnetic fields of the first and second solenoid assembly parts 11a and 11b is disposed in a gap portion where the outer diameter of 10c) and the inner diameters of the first and second solenoid assembly parts 11a and 11b contact each other. A magnetorheological fluid suspension damper for a washing machine, characterized in that it is built in a space between the two ends of the yoke (10a, 10b) between the middle yoke (10c) in the middle of the rod (9). 제 1항에 있어서,
상기 실린더(2) 내부와 로드(9) 외경 둘레에 설치되는 양쪽 선단 및 중간 오일씰(6a,6b,6c)들과 선단 및 중간 요크(10a,10b,10c), 베어링(8a,8b) 및, 자기유변유체(12)로 이루어진 댐퍼부(7)는 실린더(2)의 외부에서 V형태의 롤러로 눌러 고정시키는 파이프 롤링(14)의 걸림턱에 의하여 고정된 것을 특징으로 하는 세탁기용 자기유변유체형 현가댐퍼.The method of claim 1,
Both tip and intermediate oil seals 6a, 6b, and 6c, and tip and intermediate yokes 10a, 10b and 10c and bearings 8a and 8b which are installed around the inside of the cylinder 2 and the outer diameter of the rod 9; The damper part 7 made of the magnetorheological fluid 12 is fixed to the magnetorheological fluid for a washing machine, which is fixed by a locking jaw of the pipe rolling 14 which is fixed by pressing a V-shaped roller from the outside of the cylinder 2. Type suspension damper.
KR1020100038374A 2010-04-26 2010-04-26 Suspension damper having magneto rheological fluid type for washing machine KR101197282B1 (en)

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KR101233651B1 (en) * 2011-11-04 2013-02-15 주식회사 썬 프레인 코 Magnetic damper
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JP2001170390A (en) 1999-12-16 2001-06-26 Hitachi Ltd Dehydrating washing machine
JP2002346282A (en) 2001-05-23 2002-12-03 Toshiba Corp Drum type washing machine

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JP2001170390A (en) 1999-12-16 2001-06-26 Hitachi Ltd Dehydrating washing machine
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