KR100201655B1 - Ball balancer of a washer - Google Patents

Ball balancer of a washer Download PDF

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Publication number
KR100201655B1
KR100201655B1 KR1019970001619A KR19970001619A KR100201655B1 KR 100201655 B1 KR100201655 B1 KR 100201655B1 KR 1019970001619 A KR1019970001619 A KR 1019970001619A KR 19970001619 A KR19970001619 A KR 19970001619A KR 100201655 B1 KR100201655 B1 KR 100201655B1
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South Korea
Prior art keywords
ball
steel
ball balancer
balancer
dehydration
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KR1019970001619A
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Korean (ko)
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KR19980066227A (en
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강경석
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구자홍
엘지전자주식회사
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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
    • D06F37/245—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • 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
    • F16F15/32—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
    • F16F15/36—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved
    • F16F15/363—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved using rolling bodies, e.g. balls free to move in a circumferential direction
    • 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
    • F16F2232/00—Nature of movement
    • F16F2232/02—Rotary

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

Abstract

본 발명은 세탁기의 볼밸런서에 관한 것으로서, 특히 탈수초기 발생하는 과도한 진동을 감소시켜 볼밸런서의 성능을 향상시키도록 한 것이다.The present invention relates to a ball balancer of a washing machine, and in particular, to reduce the excessive vibration generated during the initial dehydration to improve the performance of the ball balancer.

이러한 본 발명은 탈수시 불평형질량으로 인한 치우침을 보상하는 강철구와, 상기 강철구의 운동을 조절하는 작동유가 구비된 세탁기의 볼밸런서에 있어서, 상기 볼밸런서의 가장자리에는 탈수중 강철구가 자유롭게 운동하도록 볼밸런서의 회전원심력에 의해 확장되는 강철밴드와, 탈수초기 복원력에 의해 강철밴드와 강철구의 마찰력을 증가시켜 강철구의 운동을 억제하는 고무밴드가 설치된 것이다.The present invention is a ball balancer of a washing machine equipped with a steel ball to compensate for the bias due to unbalanced mass during dehydration, and the hydraulic oil to control the movement of the steel ball, the ball balancer on the edge of the ball balancer to freely move the steel ball during dehydration The steel band is expanded by the rotational centrifugal force of the, and the rubber band is installed to suppress the movement of the steel ball by increasing the friction between the steel band and the steel ball by the initial dehydration restoring force.

Description

세탁기의 볼밸런서Ball balancer of washing machine

본 발명은 세탁기에 관한 것으로서, 특히 탈수초기 발생하는 과도한 진동을 감소시켜 볼밸런서의 성능을 향상시키도록 한 세탁기의 볼밸런서에 관한 것이다.The present invention relates to a washing machine, and more particularly, to a ball balancer of a washing machine to reduce the excessive vibration generated during the initial dehydration to improve the performance of the ball balancer.

종래 세탁기는 도 1에 도시된 바와 같이, 세탁기의 외관인 캐이스(1)와, 상기 캐이스(1)내에 장착되는 외조(2)와, 상기 외조(2)내측에 설치되어 세탁 및 탈수를 수행하는 내조(3)와, 상기 내조(3)의 상부에 탈수시 세탁물의 치우침으로 인한 진폭을 줄이도록 형성된 볼밸런서(4)와, 상기 내조(3)의 하부에 세탁물을 교반시키도록 설치된 펄세이터(5)와, 상기 펄세이터(5)를 구동하는 모터(6)와, 상기 모터(6)의 회전력을 이송하는 벨트(7)와, 상기 벨트(7)에 연결되어 모터(6)의 회전력을 전달받아 펄세이터(5)를 회전시키는 클러치(8)와, 상기 모터(6)와 벨트(7)를 연결하는 모터풀리(9)와, 상기 벨트(7)와 클러치(8)를 연결하는 클러치풀리(10)로 구성하였다.As shown in FIG. 1, a conventional washing machine is provided with a casing 1, which is an exterior of a washing machine, an outer tub 2 mounted in the casing 1, and installed inside the tub 2 to perform washing and dehydration. An inner tank 3, a ball balancer 4 formed on the upper part of the inner tank 3 to reduce the amplitude due to the deflection of the laundry, and a pulsator installed to stir the laundry on the lower part of the inner tank 3 ( 5), the motor 6 driving the pulsator 5, the belt 7 for transferring the rotational force of the motor 6, and the belt 7 is connected to the rotational force of the motor 6 Receives a clutch (8) for rotating the pulsator (5), a motor pulley (9) connecting the motor (6) and the belt (7), a clutch connecting the belt (7) and the clutch (8) It consists of a pulley (10).

그리고 상기 볼밸런서(4)내부에는 도 2와 같이 탈수시 무게중심을 이루기 위한 강철구(11)와, 상기 강철구(11)의 이동을 조절하는 작동유(12)가 구비된다.And inside the ball balancer (4) is provided with a steel ball 11 to achieve the center of gravity when dewatering, as shown in Figure 2, the hydraulic oil 12 for controlling the movement of the steel ball (11).

이와 같이 구성된 종래의 세탁기에 전원이 인가되면 모터(6)가 회전하게 되고, 상기 모터(6)의 회전력이 밸트(7)와 클러치(8)를 거쳐 펄세이터(5)에 전달되어 세탁물을 교반시키며 세탁을 수행하게 되며, 탈수모드시는 내조(3)가 고속회전하면서 세탁물을 원심 탈수하게 되는데, 탈수초기 과도한 에너지에 의해 내조(3)에서는 세탁물이 일방향으로 몰리게 되어 불평형질량(a)이 발생하게 되고, 이에 따라 내조(3)의 회전중심(O)과 실질적인 무게중심(o)의 불일치로 편심거리(e)를 갖게 되어 도 3 의 (가)와 같이 1차공진 이전에는 불평형질량(a)과 밸런서질량인 강철구(11)가 같은 방향으로 쏠려 큰 진동진폭을 일으키나, 공진 통과후에는 도 3 의 (나)와 같이 180 W의 위상차이를 갖고 강철구(11)가 불평형질량(a)의 반대편으로 이동함으로써 불평형질량(a)이 보상되어 진동변위를 줄여준다.When power is applied to the conventional washing machine configured as described above, the motor 6 rotates, and the rotational force of the motor 6 is transmitted to the pulsator 5 via the belt 7 and the clutch 8 to stir the laundry. In the dehydration mode, the inner tank 3 spins at high speed while the dewatering mode is centrifugally dehydrated. In the inner tank 3, the laundry is driven in one direction due to excessive energy, resulting in an unbalanced mass (a). As a result, there is an eccentric distance (e) due to a mismatch between the rotation center (O) and the substantial center of gravity (o) of the inner tub (3). As shown in (a) of FIG. ) And the balancer mass steel ball 11 are oriented in the same direction, causing a large vibration amplitude, but after resonance passes, the steel ball 11 has a phase difference of 180 W as shown in (b) of FIG. 3 and the unbalanced mass (a) By moving to the opposite side the unbalanced mass (a) Reduces the displacement

이때, 강철구(11)의 이동에는 여러가지 힘이 작용하며, 볼밸런서(4) 표면 거칠기와 원심력의 크기에 관계하는 접선마찰력, 작동유(12)에 의한 점성저항이 있다.At this time, various forces act on the movement of the steel sphere 11, and there are tangential frictional forces related to the surface roughness and the magnitude of the centrifugal force of the ball balancer 4, and viscous resistance by the hydraulic oil 12.

그러나 이러한 종래 세탁기의 탈수시 내조는 고속회전하지만 볼밸런서의 내부에 위치한 강철구는 관성에 의해 제자리에 있으려고 하는 힘이 작용하게 되어 내조의 회전속도와 강철구의 회전속도에 차이가 발생하므로 속도차이를 줄이기 위해 점성이 큰 작동유를 밸런서내에 강철구와 함께 넣어서 사용하게 되는데, 탈수초기 강철구와 불평형질량이 같은 방향에 위치하게 되어 오히려 더 불안정해지고, 상기 강철구의 밸런싱위치로의 이동이 정확하지 않을 때에는 잔류 불평형에 의한 미세 진동이 존재하게 되는 문제점이 있었다.However, when dewatering such a conventional washing machine, the inner tank rotates at a high speed, but the steel balls located inside the ball balancer are forced to stay in place by inertia, causing a difference in the rotation speed of the inner tank and the rotating speed of the steel balls. In order to reduce the viscosity, the hydraulic fluid is used together with the steel balls in the balancer. The dehydrated steel balls and the unbalanced mass are located in the same direction, which makes them more unstable. There was a problem that there is a micro vibration by.

본 발명은 이러한 점을 감안하여 볼밸런서의 가장자리에 확장가능한 강철밴드와 고무밴드를 설치하고, 작동유를 저점성의 유체로 구성함으로써 탈수초기에는 고무밴드의 복원력으로 강철구의 운동을 구속하여 불평형질량과 같은 방향으로 쏠리지 못하게 하고, 탈수중에는 강철밴드의 원심력에 따른 확장을 이용하여 고무밴드의 복원력을 상쇄시켜 강철구의 운동이 저점성의 유체 분위기속에서 자유롭게 이루어지도록 하여 볼밸런서의 성능을 향상시키는 데 그 목적이 있다.In view of this point, the present invention installs an expandable steel band and rubber band at the edge of the ball balancer, and configures the hydraulic fluid with a low viscosity fluid to constrain the movement of the steel sphere with the restoring force of the rubber band in the initial stage of dehydration. It aims to improve the performance of the ball balancer by preventing it from being oriented in the direction and offsetting the restoring force of the rubber band by expanding according to the centrifugal force of the steel band during dehydration so that the movement of the steel ball can be made freely in a low viscosity fluid atmosphere. have.

도 1은 일반적인 세탁기의 내부 구성도.1 is an internal configuration diagram of a typical washing machine.

도 2는 종래 세탁기의 볼밸런서 구성도.Figure 2 is a ball balancer configuration of a conventional washing machine.

도 3은 종래 세착기의 볼밸런서로서, (가)는 탈수초기의 볼밸런서 상태도, (나)는 탈수중의 볼밸런서 상태도.3 is a ball balancer of a conventional washing machine, (a) is a ball balancer state diagram of the dehydration initial stage, (b) is a ball balancer state diagram during dehydration.

도 4는 본 발명 세탁기의 볼밸런서로서, (가)는 평단면도, (나)는 탈수초기의 볼밸런서 상태도, (다)는 탈수중의 볼밸런서 상태도.Figure 4 is a ball balancer of the washing machine of the present invention, (a) is a cross-sectional view, (b) is a ball balancer state diagram of the initial stage of dehydration, (c) is a ball balancer state diagram during dehydration.

도 5의 (가)는 강철밴드의 단면도이고, (나)는 고무밴드의 단면도이다.5 (a) is a cross-sectional view of the steel band, (b) is a cross-sectional view of the rubber band.

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

101 : 볼밸런서 102 : 강철구101: ball balancer 102: steel ball

103 : 작동유 104 : 강철밴드103: working oil 104: steel band

105 : 고무밴드105: rubber band

이하, 본 발명을 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 4는 본 발명에 의한 세탁기의 볼밸런서 구성도를 나타낸 것으로서, 탈수시 불평형질량(a')으로 인한 치우침을 보상하는 볼밸런서(101)에는 무게중심을 이루기 위한 다수개의 강철구(102)와, 상기 강철구(102)가 자유롭게 운동하도록 저항력이 작은 저점성유체로 된 작동유(103)가 구비된다.Figure 4 shows the ball balancer configuration of the washing machine according to the present invention, the ball balancer 101 to compensate for the bias due to the unbalanced mass (a ') during dehydration, a plurality of steel spheres 102 to form a center of gravity, A hydraulic oil 103 made of a low-viscosity fluid having a small resistance is provided to freely move the steel sphere 102.

그리고, 상기 볼밸런서(101)의 가장자리에는 탈수중 강철구(102)가 자유롭게 이동하도록 볼밸런서(101)의 회전원심력에 의해 확장되는 강철밴드(104)와, 탈수초기 복원력에 의해 강철밴드(104)와 강철구(102)의 마찰력을 증가시켜 강철구(102)의 운동을 억제하는 고무밴드(105)가 설치된다.In addition, the steel band 104 is extended by the rotational centrifugal force of the ball balancer 101 so that the steel ball 102 moves freely during dehydration at the edge of the ball balancer 101, and the steel band 104 by the initial dehydration restoring force. And rubber band 105 is installed to increase the friction of the steel ball 102 to suppress the movement of the steel ball 102.

그리고, 도 5와 같이 강철밴드(104)는 확장가능하도록 개방루프의 환상형으로 구성하고, 고무밴드(105)는 복원력이 강하도록 폐루프로 이루어진 주름진 모양으로 구성한다.And, as shown in Figure 5, the steel band 104 is configured in an annular shape of an open loop to expand, and the rubber band 105 is configured in a corrugated shape made of a closed loop so that the restoring force is strong.

이와같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above is as follows.

먼저, 세탁기의 탈수모드시 내조(도면상에 도시되지 않음)의 회전원심력에 의해서 세탁물의 원심탈수가 실시되는데, 탈수 초기 과도한 에너지에 의해 세탁물이 일방향으로 몰리게 되어 불평형질량(a')이 발생하게 되면 볼밸런서(101)내에 위치한 다수개의 강철구(102)는 불평형질량(a')의 반대편으로 신속히 이동하여 불평형질량(a')을 보상하는 역할을 하게 된다.First, in the dehydration mode of the washing machine, centrifugal dewatering of the laundry is performed by the rotational centrifugal force of the inner tank (not shown in the drawing), and the laundry is driven in one direction due to excessive energy in the initial stage of dehydration so that an unbalanced mass (a ') is generated. When the plurality of steel spheres 102 located in the ball balancer 101 is quickly moved to the opposite side of the unbalanced mass (a ') serves to compensate for the unbalanced mass (a').

이때, 상기 볼밸런서(101)의 가장자리에 확장가능한 환상형의 강철밴드(104)와 폐루프의 고무밴드(105)가 설치되고, 작동유(103)가 저점성의 유체로 구성되므로 탈수 초기 과도한 에너지에 의해 불평형질량(a')이 발생하게 되면 고무밴드(105)의 복원력에 의해 강철구(102)의 운동이 억제되어 불평형질량(a')과 같은 방향으로의 쏠림이 방지되고, 탈수중에는 내조의 회전수 증가에 따른 원심력의 증가로 인해 강철밴드(104)가 확장되어 고무밴드(105)의 복원력을 상쇄시키므로 강철구(102)에 미치는 저항력이 약화되어 강철구(102)는 저점성의 유체분위기 속에서 불평형질량(a')의 반대방향으로 신속하게 이동할 수 있는 것이다.At this time, since the expandable annular steel band 104 and the closed loop rubber band 105 are installed at the edge of the ball balancer 101, and the hydraulic oil 103 is composed of low viscosity fluid, When the unbalanced mass a 'is generated, the restoring force of the rubber band 105 suppresses the movement of the steel sphere 102, thereby preventing the ball from moving in the same direction as the unbalanced mass a'. As the number of centrifugal force increases with increasing number, the steel band 104 expands to offset the restoring force of the rubber band 105, so that the resistance to the steel sphere 102 is weakened, so that the steel sphere 102 has an unbalanced mass in a low viscosity fluid atmosphere. It can move quickly in the opposite direction of (a ').

이상에서 설명한 바와 같이 본 발명은 고무밴드의 복원력과 강철밴드의 확장성을 이용하는 것으로, 탈수초기 밸런싱질량인 강철구의 운동이 고무밴드의 복원력에 의해 구속되므로 불평형질량과 같은 방향으로의 쏠림이 방지되고, 탈수중에는 볼밸런서의 회전에 따른 강철밴드의 확장에 따라 고무밴드의 복원력이 상쇄되어 강철구가 저항성이 적은 저점성의 유체분위기 속에서 불평형질량의 반대방향으로 신속히 이동하므로 불평형질량을 원활히 보상하는 효과가 있다.As described above, the present invention uses the restoring force of the rubber band and the expandability of the steel band. Since the movement of the steel sphere, which is the initial dehydration balancing mass, is constrained by the restoring force of the rubber band, it is prevented from pulling in the same direction as the unbalanced mass. During dehydration, the restoring force of the rubber band is offset by the expansion of the steel band due to the rotation of the ball balancer, and the steel balls move quickly in the opposite direction of the unbalanced mass in a low-viscosity fluid atmosphere. have.

Claims (3)

탈수시 불평형질량으로 인한 치우침을 보상하는 강철구와, 상기 강철구의 운동을 조절하는 작동유가 구비된 세탁기의 볼밸런서에 있어서, 상기 볼밸런서의 가장자리에는 탈수중 강철구가 자유롭게 운동하도록 볼밸런서의 회전원심력에 의해 확장되는 강철밴드와, 탈수초기 복원력에 의해 강철밴드와 강철구의 마찰력을 증가시켜 강철구의 운동을 억제하는 고무밴드가 설치된 것을 특징으로 하는 세탁기의 볼밸런서.In the ball balancer of a washing machine equipped with a steel ball to compensate for the bias due to unbalanced mass during dehydration, and the hydraulic oil to control the movement of the steel ball, the ball balancer on the edge of the ball balancer to freely move the steel ball during dewatering Ball balancer of the washing machine, characterized in that the steel band is extended by, and the rubber band to suppress the movement of the steel ball by increasing the friction between the steel band and the steel ball by the dehydration initial resilience. 제 1항에 있어서, 상기 고무밴드는 복원력이 강하도록 폐루프의 주름진 형태로 구성한 것을 특징으로 하는 세탁기의 볼밸런서.The ball balancer according to claim 1, wherein the rubber band is configured in a closed loop corrugated form so as to have strong restoring force. 제 1항에 있어서, 상기 강철밴드는 확장가능하도록 개방루프의 환상형으로 구성한 것을 특징으로 하는 세탁기의 볼밸런서.The ball balancer of claim 1, wherein the steel band is formed in an annular shape of an open loop to be expandable.
KR1019970001619A 1997-01-21 1997-01-21 Ball balancer of a washer KR100201655B1 (en)

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