KR100253221B1 - Damper for washing machine - Google Patents

Damper for washing machine Download PDF

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Publication number
KR100253221B1
KR100253221B1 KR1019970069359A KR19970069359A KR100253221B1 KR 100253221 B1 KR100253221 B1 KR 100253221B1 KR 1019970069359 A KR1019970069359 A KR 1019970069359A KR 19970069359 A KR19970069359 A KR 19970069359A KR 100253221 B1 KR100253221 B1 KR 100253221B1
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South Korea
Prior art keywords
cap
damper
flexible member
moving member
washing machine
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KR1019970069359A
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Korean (ko)
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KR19990050279A (en
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장재원
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구자홍
엘지전자주식회사
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Priority to KR1019970069359A priority Critical patent/KR100253221B1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/24—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
    • 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
    • F16F15/04—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 elastic means
    • F16F15/08—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 elastic means with rubber springs ; with springs made of rubber and metal
    • F16F15/085—Use of both rubber and metal springs
    • 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
    • F16F2238/00—Type of springs or dampers
    • F16F2238/04—Damper

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (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 vibration and noise by appropriately acting damping force according to a vibration characteristic at an initial driving of a dehydrating process and a steady state. CONSTITUTION: A damper of a full automatic washing machine comprises a cylindrical cap(11) having a sliding slot(11a) and an air inlet(11b); a snubber bar(12) inserted in the sliding slot(11a) to be slid; a moving member(13) combined with the snubber bar(12); a spring(14) installed inside the cap(11) to support the moving member(13); a flexible member(16) installed outside the moving member(13) and contained an upper and a lower openings(15,15'); and C typed ring springs(17) to stick the flexible member(16) to an inner wall of the cap(11) by inserting in the openings. In a transient state, a damping is performed with large force by vertically moving the flexible member(16) to be contacted with the cap(11) through the ring springs(17). In a steady state, the small damping force is acted by flexibly transforming the flexible member(16) without sliding friction force between the cap(11) and the flexible member(16).

Description

전자동 세탁기의 댐퍼Damper of fully automatic washing machine

본 발명은 전자동 세탁기의 댐퍼에 관한 것으로, 특히 기동탈수시와 정상탈수시의 진동특성에 따라 댐핑력이 적절이 작용하도록 함으로써 진동과 소음발생을 감소시키도록 하는데 적합한 전자동 세탁기의 댐퍼에 관한 것이다.The present invention relates to a damper of a fully automatic washing machine, and more particularly, to a damper of a fully automatic washing machine suitable for reducing vibration and noise by allowing a damping force to be appropriately applied according to the vibration characteristics of starting and dehydration.

일반적으로 세탁기는, 도1에 도시한 바와 같이, 소정의 내부체적을 갖는 외곽케이스(1)와, 내부에 물을 담을 수 있는 소정의 용기를 이루며 상기 외곽케이스(1)내에 설치되는 외조(2)와, 내부에 세탁물을 담을 수 있는 원통형으로 형성되고 상기 외조(2)의 내부에 설치되는 내조(3)와, 상기 외조(2)의 외측 하면에 설치되어 구동력을 발생시키는 구동모터(4)와, 상기 구동모터(4)의 구동력을 상기 내조(3)에 전달하고 차단하는 클러치(5)와, 상기 외조(2)에 부품들이 결합되어 이루어지는 외조(2)조립체를 상기 외곽케이스(1)에 지지하도록 함과 더불어 외조(2) 조립체에서 발생되는 진동이 외곽케이스(1)에 전달되는 것을 최소화하기 위하여 4개의 댐퍼(D;Damper)로 구성되어 있어서, 내조(3)에 세탁물 및 세제를 투입하고 세탁수를 공급하여 세탁,헹굼,탈수 등의 일련의 과정을 진행하게 된다.In general, the washing machine, as shown in Figure 1, the outer casing (1) having a predetermined internal volume, and the outer tank (2) installed in the outer case (1) forming a predetermined container for containing water therein And an inner tub 3 formed in a cylindrical shape to accommodate laundry therein, and a driving motor 4 installed on an outer bottom surface of the outer tub 2 to generate a driving force. And a clutch 5 for transmitting and blocking a driving force of the driving motor 4 to the inner tank 3 and an outer tub 2 assembly in which parts are coupled to the outer tub 2, and the outer case 1. In addition, the damper (D) is composed of four dampers (D) to minimize vibrations generated from the outer tub (2) assembly to the outer case (1). A series of laundry, rinsing and dehydration The process will proceed.

또한, 상기 댐퍼(D)는 도2a와 2b에 도시된 바와 같이, 하측이 개구되고 상측에 슬라이딩공(6a)이 상,하방향으로 형성되며 내경이 하단부에서 상단부로 갈수록 작게 형성되어 있는 캡(6)과, 상기 슬라이딩공(6a)에 상,하방향으로 슬라이딩가능토록 설치되어 외곽케이스(1)의 모서리에 연결되도록 설치되는 스너버 바(7)와, 그 스너버 바(7)의 하단부에 결합되는 댐핑고무(8)와, 상기 스너버 바(7)에 감싸도록 댐핑고무(8)의 상측에 설치되는 스프링(9)과, 상기 댐핑고무(8)의 내측 하단홈(8a)에 삽입설치되는 원형코일스프링(10)으로 구성되어 있다.In addition, the damper (D) as shown in Figures 2a and 2b, the lower side is opened and the sliding hole (6a) is formed in the upper and lower directions on the upper side and the inner diameter is formed smaller from the lower end to the upper end ( 6) and a snubber bar 7 installed to be slidable in the sliding hole 6a in the up and down direction so as to be connected to the edge of the outer case 1, and a lower end of the snubber bar 7. Damping rubber (8) coupled to the spring (9) is installed on the upper side of the damping rubber (8) so as to surround the snubber bar (7), and the inner bottom groove (8a) of the damping rubber (8) Consists of a circular coil spring 10 is inserted.

즉, 도3과 도4에 도시된 바와 같이, 원형코일스프링(10)이 댐핑고무(8)를 캡(6)의 내벽에 밀착시키도록 되어 있어서, 탈수행정의 초기구등시 과도구간에서는 세탁물과 세탁수의 무게에 의하여 스프링(9)이 압착된 상태로 댐핑고무(8)가 내경이 작은 캡(6)의 내측 상단부에 밀착되어 댐핑력이 증가된 상태로 일정거리를 상,하방향으로 이동하며 제진하고, 일정시간이 경과되어 정상탈수시에는 상당량의 세탁수가 배수되어 댐핑고무(8)는 스프링(9)의 힘에 의하여 이동되므로 내경이 상대적으로 큰 캡(6)의 내측 하단부에서 상,하방향으로 일정거리를 이동하며 댐핑력이 적은 상태로 제진하게 된다.That is, as shown in Figs. 3 and 4, the circular coil spring 10 is to be in close contact with the damping rubber 8 to the inner wall of the cap (6), the laundry during the initial lighting of the dehydration administration The damping rubber 8 is pressed against the inner upper end of the cap 6 having a small inner diameter while the spring 9 is compressed by the weight of the washing water, and the damping force is increased. When the water is dehydrated and a certain amount of time passes, a considerable amount of washing water is drained during normal dehydration, and the damping rubber 8 is moved by the force of the spring 9 so that the upper end of the cap 6 has a relatively large inner diameter. And, moving downwards a certain distance and damping with a low damping force.

도5와 도6은 탈수속도에 따른 외조(2)의 진폭비와 외곽케이스(1)의 전달력비를 보여주고 있다.5 and 6 show the ratio of the amplitude of the outer shell (2) and the transmission force ratio of the outer case (1) according to the dehydration speed.

그러나, 상기한 바와 같은 종래의 전자동 세탁기에서는 탈수행정의 초기구동시와 정상탈수시에 댐퍼(D)가 적절한 댐핑력을 갖지 못하여 알맞은 제진이루어지지 못함으로서, 소음과 진동이 발생되는 문제점이 있었다.However, in the conventional fully automatic washing machine as described above, the damper (D) does not have an appropriate damping force at the time of initial driving and normal dehydration of the dehydration stroke, and thus, there is a problem in that noise and vibration are generated.

상기와 같은 문제점을 감안하여 안출한 본 발명의 목적은 탈수행정의 초기구동시와 정상탈수시의 진동특성에 따라 적절한 댐핑력이 작용하도록 하여 탈수행정시 진동과 소음발생을 감소시키도록 하는데 적합한 전자동 세탁기의 댐퍼를 제공함에 있다.The object of the present invention devised in view of the above problems is that the appropriate damping force acts according to the vibration characteristics of the initial driving and the normal dehydration of the dehydration stroke, so as to reduce vibration and noise generation during the dehydration stroke. In providing a damper of a washing machine.

도1은 일반적인 전자동 세탁기의 구성을 보인 종단면도.1 is a longitudinal sectional view showing a configuration of a general automatic washing machine.

도2a는 종래 댐퍼의 과도구간 작동상태를 보인 종단면도.Figure 2a is a longitudinal cross-sectional view showing an operation state between the overtool of the conventional damper.

도2b는 종래 댐퍼의 정상구간 작동상태를 보인 종단면도.Figure 2b is a longitudinal sectional view showing a normal section operating state of the conventional damper.

도3은 종래 댐핑고무에 원형스프링이 설치된 상태를 보인 저면도.Figure 3 is a bottom view showing a state in which a circular spring is installed in the conventional damping rubber.

도4는 종래 댐핑고무에 원형스프링이 설치된 상태를 보인 종단면도.Figure 4 is a longitudinal sectional view showing a state in which a circular spring is installed in the conventional damping rubber.

도5는 종래 탈수속도에 따른 세탁조의 진폭비를 보인 그래프.5 is a graph showing the amplitude ratio of the washing tank according to the conventional dehydration speed.

도6은 종래 탈수속도에 따른 케이스의 전달력비를 보인 그래프.Figure 6 is a graph showing the transmission force ratio of the case according to the conventional dehydration speed.

도7a는 본 발명 댐퍼의 과도구간 작동상태를 보인 종단면도.Figure 7a is a longitudinal cross-sectional view showing the operating state between the overtool of the damper of the present invention.

도7b는 본 발명 댐퍼의 정상구간 작동상태를 보인 종단면도.Figure 7b is a longitudinal sectional view showing a normal section operating state of the damper of the present invention.

도8은 본 발명 유연체에 링 스프링이 설치된 상태를 보인 저면도.Figure 8 is a bottom view showing a state in which a ring spring is installed in the flexible body of the present invention.

도9은 본 발명 유연체에 링 스프링이 설치된 상태를 보인 종단면도.Figure 9 is a longitudinal sectional view showing a state in which a ring spring is installed in the flexible body of the present invention.

도10은 본 발명의 등작을 설명하기 위한 종단면도.10 is a longitudinal cross-sectional view for explaining the equalization of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

11 : 캡 11a : 슬라이딩공11: cap 11a: sliding ball

12 : 스너버 바 13 : 이동부재12: snubber bar 13: moving member

14 : 스프링 15,15' : 상,하측 개구부14: spring 15,15 ': upper and lower openings

16 : 유연체 17 : 링 스프링16: flexible body 17: ring spring

상기와 같은 본 발명의 목적을 달성하기 위하여 상측 중앙에 슬라이딩공이 형성되고, 하측이 개구되며, 내경이 하단부에서 상단부로 갈수록 작게 형성된 캡과; 상기 슬라이딩공에 상,하방향으로 슬라이딩가능토록 삽입설치되는 스너버 바와; 상기 캡의 내측에 설치된 스너버 바의 하단부에 결합되며 중앙부가 오목한 이동부재와; 그 이동부재가 하측으로 탄지되도록 캡의 내측에 설치되는 스프링과, 상기 이동부재의 외측에 설치되며 상,하측이 개구되도록 상,하측 개구부가 형성되어 있는 유연체와, 상기 상,하측 개구부에 각각 외측방향으로 탄지되도록 삽입설치되어 유연체의 상,하단부를 캡의 내벽에 밀착시키기 위한 링 스프링을 구비하여서 구성되는 것을 특징으로 하는 전자동 세탁기의 댐퍼가 제공된다.In order to achieve the object of the present invention as described above, a sliding hole is formed in the upper center, the lower side is opened, and the inner diameter of the cap formed from the lower end to the upper end; A snubber bar inserted into the sliding hole to be slidable in an upward and downward direction; A moving member coupled to a lower end of a snubber bar installed inside the cap and having a concave center portion; A spring installed on the inside of the cap so that the moving member is pushed downward, a flexible body provided on the outside of the moving member and having upper and lower openings formed so that the upper and lower sides are opened, and the upper and lower openings, respectively. The damper of the fully automatic washing machine is inserted and installed so as to be supported in the outward direction and provided with a ring spring for contacting the upper and lower ends of the flexible body with the inner wall of the cap.

이하, 상기와 같이 구성되는 본 발명 전자동 세탁기의 댐퍼를 첨부된 도면의 실시예를 참고하여 보다 상세히 설명하면 다음과 같다.Hereinafter, the damper of the present invention fully automatic washing machine configured as described above will be described in more detail with reference to an embodiment of the accompanying drawings.

도7a와 7b 및 도8, 도9에 도시된 바와 같이, 본 발명 전자동 세탁기의 댐퍼(D)는 상측에 상단부 중앙에 슬라이딩공(11a)이 형성되어 있고, 하측이 개구되며 일측면에 공기출입공(11b)가 형성되어 있는 원통형의 캡(11)과; 상기 슬라이딩공(11a)에 일정부분이 상,하측으로 슬라이딩가능토록 삽입설치되어 있는 스너버 바(12)와; 상기 캡(11)의 내측에 설치된 스너버 바(12)의 하단부에 결합되며 중앙부가 오목한 이동부재(13)와; 그 이동부재(13)가 하측으로 탄지되도록 캡(11)의 내측에 설치되는 스프링(14)과, 상기 이동부재(13)의 외측에 설치되며 상,하측이 개구되도록 상,하측 개구부(15)(15')가 형성되어 있는 유연체(16)와, 상기 상,하측 개구부(15)(15')에 각각 외측방향으로 탄지되도록 삽입설치되어 유연체(16)의 상,하단부를 캡(11)의 내벽에 밀착시키기 위한 링 스프링(17)으로 구성된다.As shown in Figures 7a and 7b and 8, 9, the damper (D) of the fully automatic washing machine of the present invention has a sliding hole (11a) is formed in the center of the upper end on the upper side, the lower side is opened and air inlet to one side A cylindrical cap 11 in which a ball 11b is formed; A snubber bar 12 having a predetermined portion inserted in the sliding hole 11a so as to be slidable up and down; A moving member 13 coupled to the lower end of the snubber bar 12 installed inside the cap 11 and having a concave center portion; Spring 14 is installed on the inside of the cap 11 so that the movable member 13 is pushed downward, and the upper and lower openings 15 are installed outside the movable member 13 so that the upper and lower sides are opened. The upper and lower ends of the flexible body 16 are inserted into the flexible body 16 having the 15 'and the upper and lower openings 15 and 15', respectively. It consists of a ring spring 17 for close contact with the inner wall of the).

상기 링 스프링(17)은 C형 링 스프링(17)인 것을 특징으로 한다.The ring spring 17 is characterized in that the C-type ring spring (17).

상기와 같이 구성되어 있는 본 발명 전자동 세탁기의 댐퍼는 세탁직후 탈수기동시의 과도구간에서는 도7a와 같이 캡(11)의 내측 상단부에서 유연체(16)가 상,하방향으로 일정거리 피스톤 운동을 하게 되는데, 이때는 도10에 도시된 바와 같은 정상탈수시의 최대진폭(X) 보다 상대적으로 크기 때문에 유연체(16)의 외측면이 2개의 링 스프링(17)에 의하여 캡(11)의 내측에 밀착된 상대로 상,하이동하며 미끄럼 마찰력에 의의하여 큰 힘으로 댐핑되게 된다.The damper of the automatic washing machine of the present invention configured as described above allows the flexible body 16 to move a certain distance upward and downward in the upper and lower portions of the cap 11 as shown in FIG. In this case, the outer surface of the flexible body 16 is in close contact with the inside of the cap 11 by the two ring springs 17 because it is larger than the maximum amplitude X at the time of normal dehydration as shown in FIG. It moves up and down to the opposite side and is damped with great force by sliding friction.

그런 다음, 탈수를 시작하여 일정시간이 경과되면 탈수속도가 증가하여 정상탈수가 이루어지는데, 도7b와 같이 정상구간에서는 진동의 크기가 X보다 작기 때문에 캡(11)과 유연체(16)간의 미끄럼 마찰력은 발생되지 않고, 단지 도10에 도시된 바와 같이 유연체(16)의 유연한 변형만 일어나므로 적은 힘으로 댐핑력이 작용하게 된다.Then, when dehydration starts and a predetermined time elapses, the dehydration speed increases and normal dehydration occurs. In the normal section, as shown in FIG. 7B, since the magnitude of vibration is smaller than X, sliding between the cap 11 and the flexible body 16 is performed. No frictional force is generated, only a soft deformation of the flexible body 16 occurs, as shown in FIG. 10, so that the damping force acts with little force.

이상에서 상세히 설명한 바와 같이, 본 발명 전자동 세탁기의 댐퍼는 기동탈수시에는 진폭이 크므로 유연체가 피스톤 운동을 하여 댐핑력이 크게 작용되고, 정상탈수시에는 진폭이 작으므로 유연체의 유연한 변형에 의하여 댐핑력이 작게 작용되도록 하여, 기동탈수시와 정상달수시의 진동과 소음을 감소시키는 효과가 있다.As described above in detail, the damper of the fully automatic washing machine of the present invention has a large amplitude at the start of dehydration, so that the flexible body performs a piston motion, and the damping force is large. By making the damping force act small, there is an effect of reducing vibration and noise at the start of dehydration and normal moon.

Claims (2)

상측 중앙에 슬라이딩공이 형성되고, 하측이 개구되며, 내경이 하단부에서 상단부로 갈수록 작게 형성된 캡과; 상기 슬라이딩공에 상,하방향으로 슬라이딩가능토록 삽입설치되는 스너버 바와; 상기 캡의 내측에 설치된 스너버 바의 하단부에 결합되며 중앙부가 오목한 이동부재와; 그 이동부재가 하측으로 탄지되도록 캡의 내측에 설치되는 스프링과, 상기 이동부재의 외측에 설치되며 상,하측이 개구되도록 상,하측 개구부가 형성되어 있는 유연체와, 상기 상,하측 개구부에 각각 외측방향으로 탄지되도록 삽입설치되어 유연체의 상,하단부를 캡의 내벽에 밀착시키기 위한 링스프링을 구비하여서 구성되는 것을 특징으로 하는 전자동 세탁기의 댐퍼.A sliding hole is formed in the upper center, the lower side is opened, and the inner diameter of the cap is formed smaller from the lower end to the upper end; A snubber bar inserted into the sliding hole to be slidable in an upward and downward direction; A moving member coupled to a lower end of a snubber bar installed inside the cap and having a concave center portion; A spring installed on the inside of the cap so that the moving member is pushed downward, a flexible body provided on the outside of the moving member and having upper and lower openings formed so that the upper and lower sides are opened, and the upper and lower openings, respectively. A damper of a full-automatic washing machine, comprising a ring spring inserted and installed so as to be supported in an outward direction so as to contact the upper and lower ends of the flexible body against the inner wall of the cap. 제1항에 있어서, 상기 링 스프링은 C형인 것을 특징으로 하는 전자동 세탁기의 댐퍼.The damper of claim 1, wherein the ring spring is C-shaped.
KR1019970069359A 1997-12-16 1997-12-16 Damper for washing machine KR100253221B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9365966B2 (en) 2013-12-26 2016-06-14 Dongbu Daewoo Electronics Corporation Suspension for full automatic washing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9365966B2 (en) 2013-12-26 2016-06-14 Dongbu Daewoo Electronics Corporation Suspension for full automatic washing machine

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