KR100265404B1 - Damper for washing machine - Google Patents

Damper for washing machine Download PDF

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Publication number
KR100265404B1
KR100265404B1 KR1019980006618A KR19980006618A KR100265404B1 KR 100265404 B1 KR100265404 B1 KR 100265404B1 KR 1019980006618 A KR1019980006618 A KR 1019980006618A KR 19980006618 A KR19980006618 A KR 19980006618A KR 100265404 B1 KR100265404 B1 KR 100265404B1
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KR
South Korea
Prior art keywords
piston
damper
compression spring
tub
washing machine
Prior art date
Application number
KR1019980006618A
Other languages
Korean (ko)
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KR19990071265A (en
Inventor
권태성
Original Assignee
윤종용
삼성전자주식회사
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Application filed by 윤종용, 삼성전자주식회사 filed Critical 윤종용
Priority to KR1019980006618A priority Critical patent/KR100265404B1/en
Publication of KR19990071265A publication Critical patent/KR19990071265A/en
Application granted granted Critical
Publication of KR100265404B1 publication Critical patent/KR100265404B1/en

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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/24Mountings, 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26Casings; Tubs
    • D06F37/261Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/002Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression 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
    • F16F15/04Suppression 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 elastic means
    • F16F15/06Suppression 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 elastic means with metal springs
    • F16F15/067Suppression 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 elastic means with metal springs using only wound springs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00Type of springs or dampers
    • F16F2238/04Damper

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

PURPOSE: A damper is provided to reduce a height of an outer casing by limiting a shrunken distance of the damper. CONSTITUTION: A damper is installed in a suspension bar(19) by penetrating through the suspension bar(19). A washer(21) for fixing is installed between a piston(13) and the suspension bar(19) to prevent a separation. A spacer(22) is penetrated through the suspension bar(19) to limit a maximum moved range of the piston(13) by a compression spring(15). In giving a load to a tub by storing washing water, the piston(13) is shrunken by the compression spring(15). In releasing the load by draining the washing water, the piston(13) is extended. The shrunken distance of the compression spring(15) is reduced by a length of the spacer(22). Therefore, a height of an outer casing is limited. In generating a movement of a washing machine by rotating a washing tub and a pulsator, the compression spring(15) is moved vertically. The vibration into the tub is reduced by a damping operation of the compression spring(15), friction force of the piston(13) and a damping event of the spacer(22).

Description

세탁기용 댐퍼Washer Damper

본 발명은 중공의 실린더와, 상기 실린더내에 수용되어 신축슬라이딩가능한 피스톤과, 상기 피스톤과 실린더 사이에 개재되는 압축스프링과, 일단이 상기 피스톤과 결합되고 타단이 세탁기케이싱에 고정되는 서스펜션바아를 구비한 세탁기용 댐퍼에 관한 것이다.The present invention includes a hollow cylinder, a piston that is accommodated in the cylinder and is slidable, a compression spring interposed between the piston and the cylinder, and a suspension bar having one end coupled to the piston and the other end fixed to the washing machine casing. It relates to a damper for a washing machine.

세탁기는 도 3에 도시된 바와 같이, 외관을 형성하는 외부케이싱(1)과, 외부케이싱(1)내에 수용된 터브(3)와, 터브(3)내에 회전가능하게 수용되는 바스켓 형상의 세탁조(5)와, 세탁조(5)내의 저면축상에 설치되어 회전구동하는 도시않은 펄세이터를 갖는다. 한편, 터브(3)의 외측하부에는 터브(3)내의 세탁조(5)와 펄세이터가 회전구동하도록 구동력을 제공하는 구동부(7)가 설치되어 있다. 구동부(7)는 전원공급에 의해 동력을 발생시키는 구동모터와, 터브(3)의 축선상에 위치하며 밸트에 의해 구동모터와 연결되어 구동모터의 구동력을 세탁조(5)와 펄세이터에 전달하는 샤프트조립체를 갖는다.As shown in FIG. 3, the washing machine includes an outer casing 1 forming an outer appearance, a tub 3 accommodated in the outer casing 1, and a basket-shaped laundry tub 5 rotatably received in the tub 3. ) And a pulsator (not shown) which is installed on the bottom shaft in the washing tank 5 and rotates. On the other hand, in the lower part of the outside of the tub 3, the drive part 7 which provides a driving force so that the washing tank 5 and the pulsator in the tub 3 rotates is provided. The drive unit 7 is located on the axis of the tub 3 and the drive motor for generating power by the power supply and is connected to the drive motor by the belt to transfer the driving force of the drive motor to the washing tank 5 and the pulsator It has a shaft assembly.

이와 같은 세탁기에 전원이 공급되면 구동모터가 회전하고, 이에 따라 상기 샤프트조립체는 세탁 및 탈수 코스에 따라 세탁조(5)와 펄세이터를 선택적으로 구동하게 된다. 이후, 세탁조(5)내의 세탁물이 교반 및 회전함에 따라 터브(3)에 요동이 발생하게 되며, 특히 세탁물이 편중분포되어 있는 경우에는 요동 및 진동이 심하게 된다. 이러한 세탁조(5)의 요동은 터브(3) 및 외부케이싱(1)의 진동 및 떨림을 유발하게 되고, 이에 따라 기기음이 발생하게 된다. 그래서, 세탁기에는 세탁조(5) 및 펄세이터의 구동중에 발생하는 요동을 감쇠시키기 위해 댐퍼가 설치되어 있다.When power is supplied to the washing machine, the driving motor rotates, and accordingly, the shaft assembly selectively drives the washing tank 5 and the pulsator according to the washing and dehydration course. Subsequently, as the laundry in the washing tank 5 is stirred and rotated, the shaking occurs in the tub 3, and in particular, when the laundry is unbalanced, the shaking and vibration become severe. The shaking of the washing tub 5 causes vibrations and tremors of the tub 3 and the outer casing 1, and thus, device sounds are generated. Thus, the washing machine is provided with a damper to damp the fluctuations generated during the driving of the washing tank 5 and the pulsator.

이와 같은 댐퍼(30)는 도 1 및 도 2에 도시된 바와 같이, 종 모양인 중공의 실린더(33)와, 상기 실린더(33)내에 수용되어 실린더(33)의 내벽면에 마찰슬라이딩가능한 피스톤(34)을 가지며, 상기 피스톤(34)과 실린더(33) 사이에는 실린더(33)의 개방방향을 향하여 피스톤(34)을 부세하는 압축스프링(35)이 개재되어 있다. 그리고 상기 피스톤(34)과 압축스프링(35) 사이에는 스프링을 지지하는 지지부재(36)가 개재되어 있다. 이러한 상기 피스톤(34)과 실린더(33)와 지지부재(36)는 이들의 축선방향을 따라 관통된 서스펜션바아(31)가 설치되어 있으며, 이 서스펜션바아(31)의 일측 말단부에는 단조가공에 의해 일측의 반경방향으로 확경된 스토퍼(38)가 형성되어 있으며, 이 스토퍼(38)에 상기 피스톤(35)과 지지부재(36)와 실린더(33)의 분리 이탈을 저지하는 고정용 와셔(37)가 고정되어 있다. 또한, 서스펜션바(31)의 타측 단부에는 서스펜션칼라(미도시)가 끼워져 있으며, 서스펜션칼라의 이탈을 방지하도록 절곡되어 있다. 여기서, 상기 서스펜션칼라는 외부케이싱(1)의 내측 상단부에 고정되어 있다.As shown in FIGS. 1 and 2, the damper 30 has a longitudinal hollow cylinder 33 and a piston accommodated in the cylinder 33 and frictionally sliding on the inner wall surface of the cylinder 33. 34, a compression spring 35 biasing the piston 34 toward the opening direction of the cylinder 33 is interposed between the piston 34 and the cylinder 33. A support member 36 for supporting the spring is interposed between the piston 34 and the compression spring 35. The piston 34, the cylinder 33 and the support member 36 is provided with a suspension bar 31 penetrated along their axial direction, and one end of the suspension bar 31 by forging. A stopper 38 which is enlarged in the radial direction of one side is formed, and a fixing washer 37 for preventing separation and separation of the piston 35, the support member 36, and the cylinder 33 from the stopper 38. Is fixed. In addition, a suspension collar (not shown) is fitted at the other end of the suspension bar 31, and is bent to prevent the suspension collar from being separated. Here, the suspension collar is fixed to the inner upper end of the outer casing (1).

그런데, 이와 같은 댐퍼(30)는 압축스프링(35)이 팽창위치에 있게되면 정상적인 높이h를 유지하지만, 세탁조(5)에 세탁수와 피세탁물이 담겨 압축스프링(35)이 수축위치에 있게되면 상기 정상적인 높이 h보다 Δh만큼 더 높아진다. 따라서, 댐퍼는 수축위치와 팽창위치 간의 거리가 길기 때문에 그에 상응하여 외부케이싱의 높이가 높아져야 하며, 이에 따라 사용자가 행하는 세탁물의 투입과 인출이 불편하고, 제조비용이 증대한다는 문제점이 있다.However, the damper 30 maintains a normal height h when the compression spring 35 is in the inflated position, but when the compression spring 35 is in the contracted position because the washing water and the laundry are contained in the washing tank 5. Δh higher than the normal height h. Therefore, since the damper has a long distance between the retracted position and the expanded position, the height of the outer casing must be increased accordingly, and thus, there is a problem in that the input and withdrawal of laundry performed by the user is inconvenient, and the manufacturing cost increases.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출한 것으로, 세탁기용 댐퍼의 수축거리를 제한하여 외부케이싱의 높이를 단축시킬수 있도록 한 세탁기용 댐퍼를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, it is an object of the present invention to provide a damper for a washing machine to shorten the height of the outer casing by limiting the contraction distance of the damper for a washing machine.

도 1은 종래기술에 따른 세탁기용 댐퍼를 나타낸 분해사시도,1 is an exploded perspective view showing a damper for a washing machine according to the prior art;

도 2는 도 1의 횡단면도2 is a cross-sectional view of FIG. 1

도 3은 세탁기를 나타낸 분해사시도,3 is an exploded perspective view showing a washing machine;

도 4는 본 발명에 따른 세탁기용 댐퍼를 나타낸 분해사시도,4 is an exploded perspective view showing a damper for a washing machine according to the present invention;

도 5는 도 4의 횡단면도이다.5 is a cross-sectional view of FIG. 4.

[도면의 주요부분에 대한 부호의 설명][Explanation of symbols on the main parts of the drawings]

3 ; 터브 5 ; 세탁조3; Tub 5; Washing tub

10 ; 댐퍼 11 ; 실린더10; Damper 11; cylinder

13 ; 피스톤 15 ; 압축스프링13; Piston 15; Compression Spring

17 ; 지지부재 19 ; 서스펜션바아17; Support member 19; Suspension bar

21 ; 와셔 22 ; 스페이서21; Washer 22; Spacer

23 ; 스토퍼23; stopper

상기 목적은, 본 발명에 따라, 중공의 실린더와, 상기 실린더내에 수용되어 신축슬라이딩가능한 피스톤과, 상기 피스톤과 실린더 사이에 개재되는 압축스프링과, 일단이 상기 피스톤과 결합되고 타단이 세탁기케이싱에 고정되는 서스펜션바를 구비한 세탁기용 댐퍼에 있어서, 상기 실린더와 상기 피스톤 사이에 개재되어 상기 압축스프링에 대항한 상기 피스톤의 수축이동의 최대범위를 제한하는 스페이서를 포함하는 댐퍼에 의해 달성된다.The object is, according to the present invention, a hollow cylinder, a piston accommodated in the cylinder and elastically slidable, a compression spring interposed between the piston and the cylinder, one end coupled to the piston and the other end fixed to the washing machine casing. A damper for a washing machine having a suspension bar, wherein the damper comprises a spacer interposed between the cylinder and the piston to limit a maximum range of contraction movement of the piston against the compression spring.

여기서, 상기 스페이서는 상기 서스펜션바아에 의해 관통되는 관상체로 형성되어 있는 것이 바람직하다. 또한, 상기 스페이서는 상기 압축스프링의 내부에 수용되는 것이 바람직하다.Here, it is preferable that the said spacer is formed from the tubular body penetrated by the said suspension bar. In addition, the spacer is preferably accommodated in the compression spring.

이하에서, 첨부된 도면을 참조하여 본 발명에 따른 세탁기용 댐퍼를 상세하게 설명하면 다음과 같다.Hereinafter, a damper for a washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

도 3은 세탁기를 나타낸 분해사시도이고, 도 4는 본 발명에 따른 세탁기용 댐퍼를 나타낸 분해사시도이고, 도 5는 도 4의 횡단면도이다.Figure 3 is an exploded perspective view showing a washing machine, Figure 4 is an exploded perspective view showing a damper for a washing machine according to the present invention, Figure 5 is a cross-sectional view of FIG.

도 3과 관련하여 설명한 바와 같이, 세탁기는 외관을 형성하는 외부케이싱(1)내에 다수의 서스펜션 장치에 의해 지지되는 터브(3)와, 터브(3)내에 회전가능하게 수용된 세탁조(5)와, 세탁조(5)내 저면에 도시않은 펄세이터가 설치되어 있다. 외부케이싱(1)은 전면이 전방으로 완만하게 돌출된 거의 사각통형상을 이루고 있으며, 터브(3)와 세탁조(5)는 원통형상을 이루고 있다. 그리고, 세탁조(5)의 벽면에는 세탁수의 출입을 위한 다수의 유통공(6)이 형성되어 있다.As described in connection with FIG. 3, the washing machine includes a tub 3 supported by a plurality of suspension devices in an outer casing 1 forming an appearance, a washing tub 5 rotatably housed in the tub 3, A pulsator (not shown) is provided on the bottom of the washing tank 5. The outer casing 1 has a substantially rectangular cylindrical shape in which the front surface gently projects forward, and the tub 3 and the washing tub 5 have a cylindrical shape. In addition, a plurality of distribution holes 6 are formed on the wall surface of the washing tank 5 for entering and exiting the washing water.

한편, 터브(3)의 하부에는 세탁조(5) 및 펄세이터가 회전가능하도록 동력을 제공하는 구동부(7)가 설치되어 있다. 구동부(7)는 전원공급에 의해 구동하는 구동모터와, 밸트에 의해 구동모터에 연결되며 터브(3)의 축상에 마련되어 세탁조(5)와 펄세이터를 선택적으로 정역구동하는 샤프트조립체를 갖는다.On the other hand, the lower portion of the tub (3) is provided with a drive unit (7) for providing power so that the washing tank (5) and the pulsator is rotatable. The drive unit 7 has a drive motor driven by a power supply, and a shaft assembly connected to the drive motor by a belt and provided on the shaft of the tub 3 to selectively reverse drive the washing tub 5 and the pulsator.

이러한 세탁기에 전원이 공급되면, 구동모터가 구동하고 세탁 및 탈수코스에 따라 샤프트조립체가 세탁조(5) 또는 펄세이터를 선택적으로 구동하게 된다. 이렇게 세탁 또는 탈수를 위해 세탁기가 구동하게 되면, 세탁조(5) 또는 펄세이터의 회전에 의해 진동 및 소음이 발생하게 된다. 그리고, 세탁조(5)내의 세탁물이 편중되거나 세탁물의 양이 과다할때는 진동이 더 심하게 발생하게 된다. 이에 따라, 터브(3)에는 진동을 감쇠하기 위한 댐퍼(10)가 설치되게 되며, 이 댐퍼(10)는 터브(3)의 축선에 대해 등각도간격으로 배치되게 된다.When power is supplied to the washing machine, the driving motor is driven and the shaft assembly selectively drives the washing tank 5 or the pulsator according to the washing and dehydration course. When the washing machine is driven for washing or dehydration, vibration and noise are generated by the rotation of the washing tank 5 or the pulsator. When the laundry in the washing tank 5 is biased or the amount of the laundry is excessive, vibration is more severely generated. Accordingly, the tub 3 is provided with a damper 10 for damping vibration, and the damper 10 is disposed at an equiangular interval with respect to the axis of the tub 3.

이와 같은 댐퍼(10)는 도 4 및 도 5에 도시된 바와 같이, 종 모양인 중공의 실린더(11)와, 상기 실린더(11)내에 수용되어 실린더(11)의 내벽면에 마찰슬라이딩가능한 피스톤(13)을 가지며, 상기 피스톤(13)과 실린더(11) 사이에는 실린더(11)의 개방방향을 향하여 피스톤(13)을 부세하는 압축스프링(15)이 개재되어 있다. 그리고 상기 피스톤(13)과 압축스프링(15) 사이에는 스프링을 지지하는 지지부재(17)가 개재되어 있다. 이러한 댐퍼(10)는 서스펜션바아(19)의 축선방향을 따라 관통되어 서스펜션바아(19)의 일측단부에 설치되어 있으며, 상기 피스톤(13)과 서스펜션바아(19)의 일측 말단부 사이에 분리 이탈을 저지하는 고정용 와셔(21)가 개재되어 있다. 한편, 상기 압축스프링(15)의 수축거리를 단축시키기 위해서는 압축스프링(15)에 의한 상기 피스톤(13)의 수축위치와 팽창위치 간 거리에 대한 이동의 최대범위를 제한하는 소정 길이의 서페이서(22)가 상기 실린더(11)와 상기 피스톤(13) 사이의 상기 서스펜션바아(19)에 관통 수용되어 있다.As shown in FIGS. 4 and 5, the damper 10 includes a longitudinal hollow cylinder 11 and a piston accommodated in the cylinder 11 and frictionally sliding on the inner wall surface of the cylinder 11. 13, a compression spring 15 is disposed between the piston 13 and the cylinder 11 to bias the piston 13 toward the opening direction of the cylinder 11. A support member 17 for supporting a spring is interposed between the piston 13 and the compression spring 15. The damper 10 penetrates along the axial direction of the suspension bar 19 and is installed at one end of the suspension bar 19, and separates separation between the piston 13 and one end of the suspension bar 19. A fixing washer 21 for blocking is interposed. On the other hand, in order to shorten the contraction distance of the compression spring 15, the surface 22 of a predetermined length limiting the maximum range of movement with respect to the distance between the contraction position and the expansion position of the piston 13 by the compression spring (15) ) Is penetrated by the suspension bar 19 between the cylinder 11 and the piston 13.

상기 서스펜션바아(19)에 댐퍼(10)가 설치되는 일측 말단부는 단조가공에 의해 일측의 반경방향으로 확경된 스토퍼(23)가 형성되어 상기 고정용 와셔(21)의 분리이탈을 저지시키게 된다. 또한, 서스펜션바아(19)의 타측 단부에는 서스펜션칼라(미도시)가 끼워져 있으며, 서스펜션칼라의 이탈을 방지하도록 절곡되어 있다. 여기서, 상기 서스펜션칼라는 외부케이싱(1)의 내측 모서리상단부에 고정되어 있다.One end portion of the suspension bar 19 in which the damper 10 is installed is formed with a stopper 23 which is enlarged in the radial direction of one side by forging, thereby preventing separation and detachment of the fixing washer 21. In addition, a suspension collar (not shown) is fitted to the other end of the suspension bar 19, and is bent to prevent the suspension collar from being separated. Here, the suspension collar is fixed to the upper inner edge of the outer casing (1).

이와 같은 세탁기는 터브(3)에 세탁수가 저장되어 터브(3)가 하중을 받으면 댐퍼(10)의 압축스프링(15)에 의해 피스톤(13)이 수축된 위치의 높이(H)로 이동하고, 터브(3)에 세탁수가 배수되어 터브(3)의 하중상태가 해소되면 댐퍼(10)의 압축스프링(15)에 의해 피스톤(13)이 팽창된 위치의 높이(H')로 이동한다. 이 때, 상기 압축스프링(15)의 수축거리(ΔH)는 상기 스페이서(22)의 길이에 의해 소정 거리만큼 단축되며, 이에 따라 외부케이싱(1)의 높이가 H'의 높이로 제한된다. 그리고, 세탁기는 세탁조(5) 및 펄세이터의 회전구동으로 인해 요동이 발생하게 되면 압축스프링(15)이 실린더(11)의 축선방향을 따라 상하 운동하게 된다. 이와 같은 요동현상은 압축스프링(15)의 완충작용과 피스톤(13)의 마찰력과 스페이서(22)의 소정 완충현상에 의해 터브(3)에 전달되는 진동이 감쇠되게 되는 것이다.The washing machine stores washing water in the tub 3, and when the tub 3 receives a load, the washing machine moves to the height H of the position where the piston 13 is contracted by the compression spring 15 of the damper 10. When the wash water is drained to the tub 3 and the load state of the tub 3 is released, the piston 13 moves to the height H 'at the expanded position by the compression spring 15 of the damper 10. At this time, the contraction distance ΔH of the compression spring 15 is shortened by a predetermined distance by the length of the spacer 22, and thus the height of the outer casing 1 is limited to the height of H '. In addition, when the washing machine generates oscillation due to rotation of the washing tank 5 and the pulsator, the compression spring 15 moves up and down along the axial direction of the cylinder 11. Such oscillation phenomenon is that the vibration transmitted to the tub 3 is attenuated by the buffering action of the compression spring 15, the frictional force of the piston 13, and the predetermined shock absorbing phenomenon of the spacer 22.

상술한 바와 같은 세탁기는 댐퍼의 수축거리가 짧기 때문에 외부케이싱의 높이를 제한할 수 있으며, 외부케이싱의 높이가 단축되면 사용자가 행하는 세탁물의 출입을 보다 쉽게 할 수 있다.The washing machine as described above can limit the height of the outer casing because the shrinking distance of the damper is short, and the height of the outer casing can be made easier to enter and exit the laundry performed by the user.

본 발명은 댐퍼의 짧은 수축거리에 따른 외부케이싱의 높이를 단축할 수 있기 때문에 세탁기를 제조하는 비용절감의 효과가 있다.The present invention can reduce the height of the outer casing according to the short shrinkage of the damper has the effect of reducing the cost of manufacturing the washing machine.

Claims (3)

중공의 실린더와, 상기 실린더내에 수용되어 신축슬라이딩가능한 피스톤과, 상기 피스톤과 실린더 사이에 개재되는 압축스프링과, 일단이 상기 피스톤과 결합되고 타단이 세탁기케이싱에 고정되는 서스펜션바를 구비한 세탁기용 댐퍼에 있어서,To a damper for a washing machine having a hollow cylinder, a piston that is accommodated in the cylinder and slideable, a compression spring interposed between the piston and the cylinder, and a suspension bar having one end coupled to the piston and the other end fixed to the washing machine casing. In 상기 실린더와 상기 피스톤 사이에 개재되어 상기 압축스프링에 대항한 상기 피스톤의 수축이동의 최대범위를 제한하는 스페이서를 포함하는 것을 특징으로 하는 세탁기용 댐퍼.And a spacer interposed between the cylinder and the piston to limit a maximum range of contraction movement of the piston against the compression spring. 제1항에 있어서,The method of claim 1, 상기 스페이서는 상기 서스펜션바아에 의해 관통되는 관상체로 형성되어 있는 것을 특징으로 하는 세탁기용 댐퍼.The spacer is a damper for a washing machine, characterized in that formed in the tubular body penetrated by the suspension bar. 제1항에 있어서,The method of claim 1, 상기 스페이서는 상기 압축스프링의 내부에 수용되는 것을 특징으로 하는 세탁기용 댐퍼.The spacer is a damper for a washing machine, characterized in that accommodated in the compression spring.
KR1019980006618A 1998-02-28 1998-02-28 Damper for washing machine KR100265404B1 (en)

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