KR100201654B1 - Ball balancer of a washer - Google Patents

Ball balancer of a washer Download PDF

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Publication number
KR100201654B1
KR100201654B1 KR1019970001618A KR19970001618A KR100201654B1 KR 100201654 B1 KR100201654 B1 KR 100201654B1 KR 1019970001618 A KR1019970001618 A KR 1019970001618A KR 19970001618 A KR19970001618 A KR 19970001618A KR 100201654 B1 KR100201654 B1 KR 100201654B1
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South Korea
Prior art keywords
ball balancer
balancer
ball
balancing mass
washing machine
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KR1019970001618A
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Korean (ko)
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KR19980066226A (en
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강경석
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구자홍
엘지전자주식회사
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Priority to KR1019970001618A priority Critical patent/KR100201654B1/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
    • 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)
  • 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

본 발명은 세탁기의 볼밸런서에 관한 것으로서, 특히 밸런서 및 밸런싱질량의 구조를 변경하여 초기운전시 과도한 진동을 감소시켜 볼밸런서의 성능을 향상시키도록 한 것이다.The present invention relates to a ball balancer of a washing machine, in particular to change the structure of the balancer and balancing mass to reduce the excessive vibration during the initial operation to improve the performance of the ball balancer.

이러한 본 발명은 밸런싱질량의 바닥면마찰력을 증가시키도록 볼밸런서의 바닥면은 중심방향으로 일정한 기울기를 갖는 경사면으로 구성되고, 상기 볼밸런서의 바닥면마찰력과 원주방향마찰력에 차이가 나도록 밸런싱질량은 다수개의 원통형 강철봉으로 구성된 것이다.The present invention is such that the bottom surface of the ball balancer is composed of an inclined surface having a constant inclination in the center direction to increase the bottom frictional force of the balancing mass, the balancing mass is such that the difference between the bottom frictional force and the circumferential frictional force of the ball balancer It consists of a number of cylindrical steel bars.

Description

세탁기의 볼밸런서Ball balancer of washing machine

본 발명은 세탁기에 관한 것으로서, 특히 밸런서 및 밸런싱질량의 구조를 변경하여 초기운전시 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 improve the performance of the ball balancer by reducing the excessive vibration during the initial operation by changing the structure of the balancer and balancing mass.

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 3의 (가)와 같이 1차공진 이전에는 불평형질량(a)과 밸런서질량인 강철구(11)가 같은 방향으로 쏠려 큰 진동진폭을 일으키나, 공진 통과후에는 도 3의 (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 to cause a large vibration amplitude, but after the resonance passes, as shown in (b) of FIG. 3, the steel ball 11 has a phase difference of unbalanced mass (a). By moving to the opposite side the unbalanced mass (a) It 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 탈수모드시 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, 작동초기 강철구와 불평형질량이 같은 방향에 위치하게 되어 오히려 더 불안정해지는 문제점이 있었다.However, in the dehydration mode of the conventional washing machine, the inner tank rotates at a high speed, but the steel ball located inside the ball balancer is forced to remain in place by inertia, causing a difference in the rotation speed of the inner tank and the rotating speed of the steel ball. In order to reduce the high viscosity working oil is used with the steel ball in the balancer, the initial working steel ball and the unbalanced mass is located in the same direction, there was a problem that becomes more unstable.

본 발명은 이러한 점을 감안하여 밸런서의 바닥면이 일정한 기울기를 갖도록 형성하고, 강철구 대신 원통형 강철구를 구비함으로써 탈수 초기 밸런싱 질량이 불평형질량과 같은 방향으로 쏠리는 것을 방지하여 볼밸런서의 효율을 향상시키는 데 그 목적이 있다.In view of this point, the present invention is formed in such a manner that the bottom surface of the balancer has a constant inclination, and by having a cylindrical steel ball instead of a steel ball to prevent the dehydration initial balancing mass from being oriented in the same direction as the unbalanced mass, thereby improving the efficiency of the ball balancer. The purpose is.

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 탈수 초기의 볼밸런서 상태도, (나)는 탈수중의 볼밸런서 상태도.3 is a ball balancer of a conventional washing machine, (a) is a ball balancer state of the initial stage of dehydration, (b) is a ball balancer state diagram during dehydration.

도 4는 본 발명 세탁기의 볼밸런서 구성도.Figure 4 is a ball balancer configuration of the present invention washing machine.

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

101 : 밸런서 101a : 바닥면101: balancer 101a: bottom surface

102 : 강철봉 103 : 작동유102: steel bar 103: operating oil

104 : 작동유104: working oil

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)내에 무게중심을 이루기 위한 다수개의 원통형 강철봉(102)과, 상기 강철봉(102)의 이동을 조절하는 작동유(103)가 구비되고, 상기 볼밸런서(101)의 바닥면(101a)은 일정한 기울기를 갖는 경사면으로 구성된다.Figure 4 shows the ball balancer configuration of the washing machine according to the present invention, a plurality of cylindrical steel bars 102 to achieve the center of gravity in the ball balancer 101 to compensate for the bias due to the unbalanced mass (a ') during dehydration and , Hydraulic oil 103 for adjusting the movement of the steel bar 102 is provided, the bottom surface 101a of the ball balancer 101 is composed of an inclined surface having a constant slope.

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, 탈수초기 과도한 에너지에 의해 세탁물이 일방향으로 몰리게 되어 불평형질량(a')이 발생하게 되면 볼밸런서(101)내에 위치한 다수개의 원통형 강철봉(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), which causes the unbalanced mass (a ') to be caused by the laundry being driven in one direction by excessive energy. When the plurality of cylindrical steel bars 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 바닥면(101a)이 중심방향으로 일정한 기울기를 갖는 경사면으로 구성되고, 불평형질량(a')을 보상하는 밸런싱질량이 바닥면마찰력과 원주방향마찰력에 차이가 나도록 다수개의 원통형 강철봉(102)으로 구성되므로 도 2 의 (나)와 같이 1차공진 이전에는 강철봉(102)의 자중에 의한 볼밸런서(101) 바닥면(101a)과의 마찰력에 의해 불평형질량(a')과 같은 방향으로의 이동이 억제되고(원주방향마찰력 ` 바닥면마찰력), 도 2의 (다)와 같이 1차공진 이후에는 내조 회전수의 증가에 따른 회전원심력에 의해 강철봉(102)은 마찰력이 작은 볼밸런서(101)의 벽면에 선접촉하면서 밸런싱방향(불평형질량의 반대방향)으로 신속히 이동하게 되어 밸런싱 기능을 수행하게 되는 것이다.At this time, the bottom surface 101a of the ball balancer 101 is composed of an inclined surface having a constant slope in the center direction, so that the balancing mass to compensate for the unbalanced mass (a ') is different from the bottom friction force and the circumferential friction force Since it consists of a plurality of cylindrical steel rods 102, the unbalanced mass (a) by friction with the bottom surface 101a of the ball balancer 101 due to the weight of the steel rods 102 before the first resonance as shown in (b) of FIG. () Circumferential frictional force 'floor frictional force), and after the first resonance as shown in (c) of FIG. While linearly contacting the wall surface of the ball balancer 101 having a small frictional force, it moves quickly in the balancing direction (the opposite direction of the unbalanced mass), thereby performing a balancing function.

이에 따라, 탈수 초기 밸런싱질량이 불평형질량(a')과 같은 방향으로 쏠리지 않게 되므로 볼밸런서의 성능이 향상되는 것이다.As a result, the dehydration initial balancing mass is not oriented in the same direction as the unbalanced mass a ', thereby improving the performance of the ball balancer.

이상에서 설명한 바와 같이 본 발명은 볼밸런서의 바닥면을 일정한 기울기를 갖도록 형성하고, 밸런싱질량은 강철구 대신 다수개의 원통형 강철봉으로 구성함에 따라 탈수초기 밸런싱질량이 불평형질량과 같은 방향으로 쏠리는 것이 방지되어 볼밸런서의 성능이 향상되는 효과가 있다.As described above, the present invention is formed so that the bottom surface of the ball balancer has a constant inclination, and the balancing mass is composed of a plurality of cylindrical steel bars instead of steel balls so that the dehydration initial balancing mass is prevented from being oriented in the same direction as the unbalanced mass. Balancer performance is improved.

Claims (1)

탈수시 불평형질량으로 인한 치우침을 보상하는 밸런싱질량과, 상기 밸런싱질량의 이동을 조절하는 작동유가 구비된 세탁기의 볼밸런서에 있어서, 상기 밸런싱질량의 바닥면마찰력을 증가시키도록 볼밸런서의 바닥면은 중심방향으로 일정한 기울기를 갖는 경사면으로 구성되고, 상기 밸런싱질량은 볼밸런서 바닥면의 기울기와 내조의 회전원심력에 따라 볼밸런서의 바닥면마찰력과 원주방향마찰력에 차이가 나도록 다수개의 원통형 강철봉으로 구성된 것을 특징으로 하는 세탁기의 볼밸런서.In the ball balancer of a washing machine equipped with a balancing mass to compensate for bias due to an unbalanced mass during dehydration, and a hydraulic oil for controlling the movement of the balancing mass, the bottom surface of the ball balancer is to increase the bottom frictional force of the balancing mass. Consisting of the inclined surface having a constant inclination in the center direction, wherein the balancing mass is composed of a plurality of cylindrical steel bars so that the bottom surface friction force and the circumferential friction force of the ball balancer is different depending on the inclination of the ball balancer bottom surface and the rotational centrifugal force of the inner tank. Ball balancer of the washing machine characterized by the above.
KR1019970001618A 1997-01-21 1997-01-21 Ball balancer of a washer KR100201654B1 (en)

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KR1019970001618A KR100201654B1 (en) 1997-01-21 1997-01-21 Ball balancer of a washer

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KR19980066226A KR19980066226A (en) 1998-10-15
KR100201654B1 true KR100201654B1 (en) 1999-06-15

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