KR20040018752A - Drum type washing machine - Google Patents

Drum type washing machine Download PDF

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Publication number
KR20040018752A
KR20040018752A KR1020020050719A KR20020050719A KR20040018752A KR 20040018752 A KR20040018752 A KR 20040018752A KR 1020020050719 A KR1020020050719 A KR 1020020050719A KR 20020050719 A KR20020050719 A KR 20020050719A KR 20040018752 A KR20040018752 A KR 20040018752A
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KR
South Korea
Prior art keywords
drum
piston
housing
washing machine
fixed drum
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KR1020020050719A
Other languages
Korean (ko)
Inventor
송창민
Original Assignee
삼성전자주식회사
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Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020020050719A priority Critical patent/KR20040018752A/en
Publication of KR20040018752A publication Critical patent/KR20040018752A/en

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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
    • D06F37/26—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
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
    • F16F7/09—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other in dampers of the cylinder-and-piston type

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

PURPOSE: A drum washing machine is provided to reduce vibration transmitted to a fixing drum efficiently by adjusting damping force of a buffer apparatus with varying the contact area of a piston and a friction member according to strength of vibration. CONSTITUTION: A drum washing machine comprises a fixing drum suspended in a housing, and a buffer apparatus(40) combined with the outer periphery of the fixing drum and combined with the housing. The buffer apparatus is composed of a cylinder part(41) combined with the outer periphery of the fixing drum or the housing, and a piston part(42) installed in the housing or the fixing drum and mounted with the cylinder part to move back and forth for buffering by friction with the fixing drum. A friction member(43) is formed in the cylinder part, and deformed elastically by friction with the piston part to convert vibration from the fixing drum into thermal energy. The outer periphery of the piston part is tapered to vary the friction area with the friction member according to distance of the piston part.

Description

드럼세탁기{DRUM TYPE WASHING MACHINE}Drum Washing Machine {DRUM TYPE WASHING MACHINE}

본 발명은 드럼세탁기에 관한 것으로, 더욱 상세하게는 고정드럼에 전달된 진동을 감쇄시키는 완충장치를 구비한 드럼세탁기에 관한 것이다.The present invention relates to a drum washing machine, and more particularly, to a drum washing machine having a shock absorber for damping the vibration transmitted to the fixed drum.

일반적으로 드럼세탁기는 원통형상으로 마련된 회전드럼이 회전하며 내부의 세탁물을 상부로 끌어올림으로써 낙차에 의해 세탁이 수행되게 하는 장치이다.In general, a drum washing machine is a device in which a rotating drum provided in a cylindrical shape rotates and the laundry is carried out by dropping by lifting the laundry therein.

종래의 드럼세탁기는 외관을 이루는 하우징 내부에 세탁수가 채워질 수 있도록 일측이 개구된 원통상의 고정드럼이 구비되고, 고정드럼의 내측에는 원통상의 회전드럼이 설치된다. 회전드럼은 하우징의 저부에 설치된 구동모터에 의해 구동되는데, 회전드럼의 후방에는 회전드럼을 회전시키기 위한 풀리가 설치되고, 이 풀리는 구동모터와 밸트를 매개로 연결된다. 또한, 회전드럼은 벽면에 다수의 탈수공이 형성되어 그 내측으로 세탁수의 유입과 유출이 자유롭게 되고, 탈수시에는 이 탈수공을 통해 세탁물에 함유된 수분이 빠져나가게 된다.Conventional drum washing machine is provided with a cylindrical fixed drum of which one side is opened so that the washing water can be filled in the housing forming the appearance, a cylindrical rotating drum is installed inside the fixed drum. The rotating drum is driven by a driving motor installed at the bottom of the housing, and a pulley for rotating the rotating drum is installed at the rear of the rotating drum, and the pulley is connected to the driving motor via a belt. In addition, the rotating drum is formed with a plurality of dehydration holes on the wall is free to the inflow and outflow of the wash water, the water contained in the laundry through the dehydration hole during the dehydration is released.

그리고 고정드럼의 상측에는 고정드럼을 탄력 지지하는 현가스프링이 설치되고, 고정드럼의 하부에는 세탁 시의 진동을 흡수하도록 고정드럼을 완충 지지해 주는 완충장치가 설치된다.And the upper side of the fixed drum is provided with a current gas spring for elastically supporting the fixed drum, the lower portion of the fixed drum is provided with a buffer for buffering the fixed drum to absorb the vibration during washing.

도 1에는 완충장치(1)가 도시되어 있다. 도시되어 있는 바와 같이 완충장치(1)는 일단이 고정드럼의 외측면 하부에 힌지결합되고, 타단부가 하우징의 바닥면에 힌지결합되어 고정드럼을 지지한다.1 shows a shock absorber 1. As shown in the figure, one end of the shock absorber 1 is hinged to the lower side of the outer side of the fixed drum, and the other end is hinged to the bottom of the housing to support the fixed drum.

이러한 완충장치(1)는 중공의 원통형상으로 형성된 실린더부(1a)와, 실린더부(1a) 내에 일단이 삽입되어 실린더부(1a) 내를 진퇴이동하는 피스톤부(1b)로 이루어져 있으며, 실린더부(1a) 내에는 피스톤부(1b)와 접하여 마찰하는 마찰부재(1c)가 마련되어 있다.The shock absorber 1 is composed of a cylinder portion 1a formed in a hollow cylindrical shape and a piston portion 1b having one end inserted into the cylinder portion 1a and moving back and forth in the cylinder portion 1a. In the part 1a, the friction member 1c which rubs in contact with the piston part 1b is provided.

따라서 고정드럼에 전달된 진동은 피스톤부(1b)와 마찰부재(1c)의 마찰에 의해 열에너지 형태로 발산되어 감쇄되게 되는 것이다.Therefore, the vibration transmitted to the fixed drum is diverted and attenuated in the form of thermal energy by friction between the piston part 1b and the friction member 1c.

그러나, 이와 같이 구성된 종래 드럼세탁기의 완충장치(1)는 피스톤부(1b)과 마찰부재(1c)가 항상 일정한 넓이로 접하게 되어 있다. 따라서 고정드럼에 전달된 진동의 크기에 관계없이 피스톤부(1b)와 마찰부재(1c) 사이에는 항상 일정한 마찰력이 작용하므로 진동의 크기가 피스톤부(1b)과 마찰부재(1c) 사이에 작용하는 마찰력에 비하여 매우 클 경우 이를 해소시키지 못해 이에 의해 소음이 발생한다는 문제점이 있다.However, in the shock absorber 1 of the conventional drum washing machine configured as described above, the piston part 1b and the friction member 1c are always in contact with a constant width. Therefore, irrespective of the magnitude of the vibration transmitted to the fixed drum, a constant frictional force always acts between the piston part 1b and the friction member 1c, so that the magnitude of vibration acts between the piston part 1b and the friction member 1c. If the friction force is very large, there is a problem that can not solve this problem occurs noise.

본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 그 목적은 고정드럼에 전달된 진동을 보다 효율적으로 감쇄시킬 수 있는 드럼세탁기를 제공하는 것이다.The present invention is to solve such a problem, an object of the present invention to provide a drum washing machine that can more efficiently attenuate the vibration transmitted to the fixed drum.

도 1은 종래 드럼세탁기의 완충장치를 보인 단면도이다.1 is a cross-sectional view showing a shock absorber of a conventional drum washing machine.

도 2는 본 발명이 적용된 드럼세탁기의 전체적인 구조를 보인 사시도이다.Figure 2 is a perspective view showing the overall structure of a drum washing machine to which the present invention is applied.

도 3은 본 발명에 따른 완충장치를 보인 단면도이다.3 is a cross-sectional view showing a shock absorber according to the present invention.

도 4는 본 발명에 따른 완충장치의 동작상태를 보인 단면도이다.4 is a cross-sectional view showing an operating state of the shock absorber according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10: 하우징11: 현가스프링10 housing 11: suspension gas spring

12: 구동모터14: 배수관12: drive motor 14: drain pipe

15: 배수펌프20: 고정드럼15: drain pump 20: fixed drum

30: 회전드럼40: 완충장치30: rotating drum 40: shock absorber

41: 실린더부42: 피스톤부41: cylinder portion 42: piston portion

43: 마찰부재43: friction member

이러한 목적을 달성하기 위한 본 발명은,The present invention for achieving this object,

외관을 이루는 하우징 내부에 현가 설치되는 고정드럼과, 일단부가 상기 고정드럼의 외주면에 결합되고 타단부가 상기 하우징에 결합되는 완충장치를 구비한 드럼세탁기에 있어서, 상기 완충장치는 일단이 상기 하우징과 상기 고정드럼 중 어느 하나에 설치되는 실린더부와, 일단이 상기 하우징과 상기 고정드럼 중 다른 하나에 설치되며 타단이 상기 실린더부의 타단에 진퇴이동 가능하게 설치되어 상기 고정드럼과의 마찰에 의해 완충효과가 나타나게 하는 피스톤부를 구비하되, 상기 실린더부와 상기 피스톤부의 서로 대향하는 면 중 어느 하나는 마찰면적이 가변될 수 있도록 테이퍼지게 형성된다.In the drum washing machine having a fixed drum having a suspension mounted inside the housing forming an appearance, and a shock absorber having one end coupled to the outer circumferential surface of the fixed drum and the other end coupled to the housing, the shock absorber has one end connected to the housing. One end of the cylinder is installed on one of the fixed drum, one end is installed in the other of the housing and the fixed drum and the other end is installed to move forward and backward on the other end of the cylinder is cushioning effect by friction with the fixed drum Is provided with a piston portion to appear, any one of the surfaces of the cylinder portion and the piston portion facing each other is formed to be tapered so that the friction area is variable.

또한, 상기 실린더부와 상기 피스톤부 중 어느 하나에는 마찰부재가 구비되어 상기 실린더부와 상기 피스톤부가 상기 마찰부재를 통해 마찰하게 된다.In addition, any one of the cylinder portion and the piston portion is provided with a friction member to the friction between the cylinder portion and the piston portion through the friction member.

또한, 상기 실린더부는 일단이 상기 고정드럼에 설치되며 내부에 상기 마찰부재가 설치되고, 상기 피스톤부는 상기 하우징에 설치되며 외면이 테이퍼지게 형성된다.In addition, one end of the cylinder portion is installed in the fixed drum, the friction member is installed inside, the piston portion is installed in the housing and the outer surface is formed to be tapered.

또한, 상기 피스톤부는 원형단면을 갖도록 형성되어 실질적으로 원뿔대 형상을 이룬다.In addition, the piston portion is formed to have a circular cross section to form a substantially truncated conical shape.

이하에서는 본 발명에 따른 바람직한 하나의 실시예를 도면을 참조하여 상세히 설명한다.Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the drawings.

본 발명에 따른 드럼세탁기는 도 2에 도시되어 있는 바와 같이, 외관을 이루는 하우징(10)의 내부에 세탁수가 채워질 수 있도록 일측이 개구된 원통상의 고정드럼(20)이 구비되며, 고정드럼(20)의 내측에는 원통상의 회전드럼(30)이 설치된다.As shown in FIG. 2, the drum washing machine according to the present invention includes a cylindrical fixed drum 20 having one side opened to allow washing water to be filled into the housing 10 forming an external appearance. Inside the cylinder 20 is provided a cylindrical rotating drum 30.

고정드럼(20)은 개구부가 측방을 향하도록 설치되어 사용자가 측방에서 세탁물을 넣거나 꺼낼 수 있게 된다. 이러한 고정드럼(20)의 상측에는 고정드럼(20)을 탄력 지지하는 복수의 현가스프링(11)이 설치된다. 즉, 고정드럼(20)은 현가스프링(11)에 의해 하우징(10)의 내부에 매달리는 형태로 설치되게 된다.Fixed drum 20 is installed so that the opening is directed to the side so that the user can put or take out the laundry from the side. On the upper side of the fixed drum 20, a plurality of suspension gas springs 11 which elastically support the fixed drum 20 are installed. That is, the fixed drum 20 is installed in the form of hanging in the interior of the housing 10 by the current gas spring (11).

회전드럼(30)은 하우징(10)의 저부에 설치된 구동모터(12)에 의해 구동되는데, 회전드럼(30)의 후방에는 회전드럼(30)을 회전시키기 위한 풀리(미도시)가 설치되고, 이 풀리는 구동모터(12)와 밸트(13)를 매개로 연결된다. 또한,회전드럼(30)은 벽면에 다수의 탈수공(31)이 형성되어 그 내측으로 세탁수의 유입과 유출이 자유롭게 되고, 탈수 시에는 이 탈수공(31)을 통해 세탁물에 함유된 수분이 빠져나가게 된다.The rotating drum 30 is driven by the drive motor 12 installed at the bottom of the housing 10, the rear of the rotating drum 30 is provided with a pulley (not shown) for rotating the rotating drum 30, This pulley is connected to the drive motor 12 and the belt 13 via a medium. In addition, the rotating drum 30 has a plurality of dehydration holes 31 are formed on the wall surface to allow the inflow and outflow of the washing water freely therein, and when dewatering, moisture contained in the laundry through the dehydration holes 31 is retained. Get out.

또한, 도면에 개시되어 있지는 않으나 회전드럼(30)의 내측에는 내향 돌출된 복수의 리프터가 등간격으로 설치되어 회전드럼(30)의 회전시에 세탁물을 상측으로 끌어올림으로써 세탁물이 낙차에 의해 세탁이 이루어지게 한다.In addition, although not shown in the drawing, a plurality of lifters protruding inwardly are provided inside the rotating drum 30 at equal intervals, and the laundry is washed by falling because the laundry is pulled upward when the rotating drum 30 is rotated. This is done.

고정드럼(20)의 하측에는 행굼과정이나 탈수과정에서 세탁수의 배수가 가능하도록 배수관(14)이 설치되고, 배수관(14)의 단부에는 세탁수를 강제배수 시키는 배수펌프(15)가 설치된다.A drainage pipe 14 is installed at the lower side of the fixed drum 20 to allow the washing water to be drained in a rinsing or dehydration process, and a drain pump 15 for forcibly draining the washing water is installed at the end of the draining pipe 14. .

이러한 드럼세탁기는 전원이 인가되어 구동모터(15)가 구동하면 회전드럼(30)이 고정드럼(20) 내에서 회전하면서 세탁 및 탈수를 수행하게 되는데, 회전드럼(30)의 회전에 따라 고정드럼(20)에는 진동이 발생하게 된다. 따라서 고정드럼(20)의 하부에는 세탁 및 탈수 시 발생하는 진동을 흡수하도록 고정드럼(20)을 완충 지지해 주는 완충장치(40)가 설치된다.When the drum washing machine is powered and the driving motor 15 is driven, the rotating drum 30 rotates in the fixed drum 20 to perform washing and dehydration. The fixed drum is rotated according to the rotation of the rotating drum 30. Vibration is generated at 20. Therefore, the lower portion of the fixed drum 20 is provided with a buffer 40 for buffering the fixed drum 20 to absorb the vibration generated during washing and dehydration.

완충장치(40)는 도 3에 도시된 바와 같이, 일단부가 고정드럼(20)의 외주면 하측에 결합되는 실린더부(41)와, 실린더부(41)의 내측에 끼워져 결합되는 피스톤부(42)를 구비한다.As illustrated in FIG. 3, the shock absorber 40 includes a cylinder portion 41 having one end coupled to a lower side of the outer circumferential surface of the fixed drum 20, and a piston portion 42 fitted into the cylinder portion 41. It is provided.

본 실시예에서 실린더부(41)는 중공의 원통형상으로 형성되며 내부에 피스톤부(42)과 마찰하며 고정드럼(20)에 전달된 진동이 열에너지 형태로 전환되어 발산되게 하는 마찰부재(43)가 구비된다. 이 때, 마찰부재(43)는 피스톤부(42)에 의해변형될 수 있도록 탄성변형 가능한 재질로 이루어진다.In this embodiment, the cylinder portion 41 is formed in a hollow cylindrical shape and friction with the piston portion 42 therein, the friction member 43 for the vibration transmitted to the fixed drum 20 is converted into a thermal energy form to diverge Is provided. At this time, the friction member 43 is made of an elastically deformable material to be deformed by the piston portion (42).

한편, 피스톤부(42)는 원형단면을 갖도록 형성되며 소정의 길이를 갖도록 형성되되 그 외주면이 일단에서 타단으로 진행하며 점점 넓은 단면적을 갖도록 형성된다. 즉, 피스톤부(42)는 그 외주면이 테이퍼지게 형성되어 실질적으로 원뿔대 형상으로 이루게 되는 것이다.On the other hand, the piston portion 42 is formed to have a circular cross-section and is formed to have a predetermined length, the outer peripheral surface is formed so as to have an increasingly wide cross-sectional area from one end to the other end. In other words, the piston 42 is formed so that its outer peripheral surface is tapered to substantially form a truncated cone.

이러한 피스톤부(42)는 최소 단면적을 갖는 일단이 실린더부(41) 내측에 진퇴이동 가능하게 설치되어 고정드럼(20)으로부터 전달된 진동이 따라 실린더부(41) 내를 진퇴이동하며 실린더부(41) 내에 설치되어 있는 마찰부재(43)와 마찰하게 된다. 이 때, 피스톤부(42)는 외주면이 테이퍼지게 형성되어 있으므로 피스톤부(42)의 진퇴거리에 따라 마찰부재(43)와의 마찰면적(C)이 가변된다.One end of the piston 42 has a minimum cross-sectional area so as to move forward and backward within the cylinder 41, and the cylinder part 41 moves forward and backward in response to the vibration transmitted from the fixed drum 20. It is rubbed with the friction member 43 installed in 41. At this time, since the outer circumferential surface of the piston portion 42 is tapered, the friction area C with the friction member 43 is variable according to the advance and retraction distance of the piston portion 42.

따라서, 피스톤부(42)의 진퇴이동거리와 비례하여 마찰부재(43)와 피스톤부(42)가 마찰하는 면적(C)이 증가하게 되며, 마찰면적(C)과 비례하여 마찰력이 증가한다. 그러므로, 완충장치(40)에 전달된 진동의 크기에 비례하여 완충장치(40)의 댐핑력도 증가한다.Therefore, the area C in which the friction member 43 and the piston part 42 rub in proportion to the advance and return movement distance of the piston part 42 increases, and the frictional force increases in proportion to the friction area C. Therefore, the damping force of the shock absorber 40 also increases in proportion to the magnitude of the vibration transmitted to the shock absorber 40.

본 실시예에서 피스톤부(42)는 원형단면을 갖도록 형성되어 있으나 필요에 따라 다양한 단면을 갖도록 형성하는 것도 가능하다.In this embodiment, the piston portion 42 is formed to have a circular cross section, but may be formed to have various cross sections as necessary.

또한, 본 실시예에서 실린더부(41)는 일단이 고정드럼(20)에 힌지 결합되고 피스톤부(42)는 하우징(10)에 힌지 결합되도록 되어 있으나, 역으로 실린더부(41)를 하우징(10)에 힌지 결합하고 피스톤부(42)를 고정드럼(20)에 힌지결합하는 등의 구성도 가능하다.In addition, in the present embodiment, one end of the cylinder 41 is hinged to the fixed drum 20, and the piston 42 is hinged to the housing 10, but the cylinder 41 is reversely connected to the housing ( The hinge coupling to 10) and the piston 42 is hinged to the fixed drum 20 can be configured.

또한, 본 실시예에서는 피스톤부의 외주면이 테이퍼지게 형성되어 있으나, 실린더부의 내주면이 테이퍼지게 형성하는 등의 구성도 가능하다.In addition, in the present embodiment, the outer peripheral surface of the piston is tapered, but the inner peripheral surface of the cylinder may be tapered.

또한, 본 실시예에서는 실린더부에 마찰패드가 부착되어 있으나, 피스톤부에 마찰패드를 부착하는 등의 구성도 가능하다.In addition, in the present embodiment, the friction pad is attached to the cylinder portion, but a configuration such as attaching the friction pad to the piston portion is also possible.

다음에는 이와 같이 구성된 본 발명에 따른 드럼세탁기의 동작 및 작용효과를 도면을 참조하여 상세히 설명한다.Next, the operation and effect of the drum washing machine according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

드럼세탁기는 하우징(10)의 하부에 마련된 구동모터(12)가 정역 회전하면, 이 회전력이 밸트(13)를 통해 회전드럼(30)에 전달되어 회전드럼(30)이 회전한다. 회전드럼(30)의 회전에 따라 회전드럼(30) 내부의 세탁물은 리프터에 의해 상측으로 끌여 올려져 낙하하면서 낙차에 의해 세탁이 수행된다.In the drum washing machine, when the driving motor 12 provided in the lower portion of the housing 10 rotates forward and backward, this rotational force is transmitted to the rotating drum 30 through the belt 13, and the rotating drum 30 rotates. In accordance with the rotation of the rotating drum 30, the laundry inside the rotating drum 30 is pulled upward by the lifter, and the washing is performed by falling.

탈수 시에는 회전드럼(30)의 고속회전에 의해 발생되는 원심력에 의해 세탁물에 함유된 물기의 탈수되며. 탈수된 물은 회전드럼(30)의 탈수공(31)을 통해 고정드럼(20)쪽으로 빠져나가 고정드럼(20)의 하부에 연결된 배수관(14)을 통해 하우징(10)의 외부로 배출되게 된다.During dehydration, the water contained in the laundry is dehydrated by the centrifugal force generated by the high speed rotation of the rotating drum 30. The dewatered water exits toward the fixed drum 20 through the dehydration hole 31 of the rotating drum 30 and is discharged to the outside of the housing 10 through the drain pipe 14 connected to the lower portion of the fixed drum 20. .

이와 같이 세탁 및 탈수가 이루어지는 동안, 고정드럼(20)은 회전드럼(30)의 회전과 세탁물의 유동에 의해 진동이 발생되고, 이 진동 중 일부는 고정드럼(20)의 상부에 설치된 현가스프링(11)과 고정드럼(20)의 하부를 지지하는 완충장치(40)를 통해 감쇄된다.As such, while the washing and dehydration is performed, the fixed drum 20 is vibrated by the rotation of the rotating drum 30 and the flow of the laundry, and some of the vibrations are the current gas springs installed on the fixed drum 20. 11) and attenuated through the shock absorber 40 supporting the lower portion of the fixed drum 20.

또한, 이 진동이 고정드럼(20)으로부터 완충장치(40)에 전달되면 피스톤부(42)가 실린더부(41) 내를 진퇴이동하게 되는데, 피스톤부(42)의 진퇴이동폭은 진동의 세기에 비례한다. 이 때, 피스톤부(42)는 일단에서 타단으로 진행하며 단면적이 넓어지도록 외주면이 테이퍼지게 형성되어 있으므로 피스톤부(42)가 실린더부(41) 내측으로 깊숙이 삽입될수록 도 4에 도시되어 있는 바와 같이 피스톤부(42)와 마찰부재(43)가 마찰하는 면적(C)이 넓어진다. 따라서 피스톤부(42)와 마찰부재(43) 사이에 작용하는 마찰력이 커져 완충장치(40)의 댐핑력이 증가한다.In addition, when the vibration is transmitted from the fixed drum 20 to the shock absorber 40, the piston 42 moves back and forth within the cylinder 41. The movement width of the piston 42 is the strength of the vibration. Proportional to At this time, since the piston portion 42 is tapered so that the outer circumferential surface is tapered so that the cross section is widened from one end to the other end, as the piston portion 42 is inserted deeply into the cylinder portion 41, as shown in FIG. 4. The area C at which the piston portion 42 and the friction member 43 rub is widened. Therefore, the friction force acting between the piston portion 42 and the friction member 43 is increased to increase the damping force of the shock absorber 40.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 드럼세탁기의 완충장치는 완충장치에 전달되는 진동의 크기에 비례하여 댐핑력이 증가하도록 되어 있으므로 고정드럼에 발생된 진동을 보다 효율적으로 감쇄시킬 수 있게 되는 작용효과가 있다.As described above in detail, the shock absorber of the drum washing machine according to the present invention is designed to increase the damping force in proportion to the magnitude of the vibration transmitted to the shock absorber, so that the vibration generated in the fixed drum can be more efficiently attenuated. It has an effect.

Claims (4)

외관을 이루는 하우징 내부에 현가 설치되는 고정드럼과, 일단부가 상기 고정드럼의 외주면에 결합되고 타단부가 상기 하우징에 결합되는 완충장치를 구비한 드럼세탁기에 있어서,In a drum washing machine having a fixed drum having a suspension installed inside the housing forming an appearance, and a shock absorber having one end coupled to the outer circumferential surface of the fixed drum and the other end coupled to the housing, 상기 완충장치는 일단이 상기 하우징과 상기 고정드럼 중 어느 하나에 설치되는 실린더부와, 일단이 상기 하우징과 상기 고정드럼 중 다른 하나에 설치되며 타단이 상기 실린더부의 타단에 진퇴이동 가능하게 설치되어 상기 고정드럼과의 마찰에 의해 완충효과가 나타나게 하는 피스톤부를 구비하되, 상기 실린더부와 상기 피스톤부의 서로 대향하는 면 중 어느 하나는 마찰면적이 가변될 수 있도록 테이퍼지게 형성되는 것을 특징으로 하는 드럼세탁기.The shock absorber is provided with one end of the cylinder portion is installed in any one of the housing and the fixed drum, one end is installed in the other of the housing and the fixed drum and the other end is provided to move forward and backward on the other end of the cylinder A piston washing machine having a piston to cause a buffering effect by friction with a fixed drum, wherein one of the surfaces facing each other of the cylinder and the piston is tapered so that the friction area can be varied. 제 1항에 있어서,The method of claim 1, 상기 실린더부와 상기 피스톤부 중 어느 하나에는 마찰부재가 구비되어 상기 실린더부와 상기 피스톤부가 상기 마찰부재를 통해 마찰하게 되는 것을 특징으로 하는 드럼세탁기.The drum washing machine, characterized in that any one of the cylinder portion and the piston portion is provided with a friction member to rub the cylinder portion and the piston portion through the friction member. 제 2항에 있어서,The method of claim 2, 상기 실린더부는 일단이 상기 고정드럼에 설치되며 내부에 상기 마찰부재가 설치되고, 상기 피스톤부는 상기 하우징에 설치되며 외면이 테이퍼지게 형성되는것을 특징으로 하는 드럼세탁기.And one end of the cylinder portion is installed in the fixed drum, and the friction member is installed therein, and the piston part is installed in the housing, and an outer surface thereof is tapered. 제 1항에 있어서,The method of claim 1, 상기 피스톤부는 원형단면을 갖도록 형성되어 실질적으로 원뿔대 형상을 이루는 것을 특징으로 하는 드럼세탁기.The piston unit is a drum washing machine, characterized in that it has a circular cross section to form a substantially truncated conical shape.
KR1020020050719A 2002-08-27 2002-08-27 Drum type washing machine KR20040018752A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104099752A (en) * 2013-04-09 2014-10-15 苏州三星电子有限公司 Damping force-variable vibration damper for washing machine
CN105864340A (en) * 2015-01-23 2016-08-17 青岛海尔滚筒洗衣机有限公司 Variable damping shock absorber
CN108103732A (en) * 2018-01-18 2018-06-01 无锡小天鹅股份有限公司 The assembly method of dampening assembly, washing machine and washing machine

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EP0154857A2 (en) * 1984-03-12 1985-09-18 INDUSTRIE ZANUSSI S.p.A. Improvements in a frictional dampening device for a laundry washing machine
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KR19980066480A (en) * 1997-01-24 1998-10-15 구자홍 Damper structure of drum washing machine

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Publication number Priority date Publication date Assignee Title
JPS59181346U (en) * 1983-05-23 1984-12-04 加藤電機株式会社 damper device
EP0154857A2 (en) * 1984-03-12 1985-09-18 INDUSTRIE ZANUSSI S.p.A. Improvements in a frictional dampening device for a laundry washing machine
JPS63251639A (en) * 1987-04-07 1988-10-19 Toshiba Corp Device for absorbing vibration energy
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104099752A (en) * 2013-04-09 2014-10-15 苏州三星电子有限公司 Damping force-variable vibration damper for washing machine
CN105864340A (en) * 2015-01-23 2016-08-17 青岛海尔滚筒洗衣机有限公司 Variable damping shock absorber
CN105864340B (en) * 2015-01-23 2019-05-28 青岛海尔滚筒洗衣机有限公司 A kind of damping changing impact damper
CN108103732A (en) * 2018-01-18 2018-06-01 无锡小天鹅股份有限公司 The assembly method of dampening assembly, washing machine and washing machine

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