KR100201652B1 - A low noise washer - Google Patents

A low noise washer Download PDF

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Publication number
KR100201652B1
KR100201652B1 KR1019970001008A KR19970001008A KR100201652B1 KR 100201652 B1 KR100201652 B1 KR 100201652B1 KR 1019970001008 A KR1019970001008 A KR 1019970001008A KR 19970001008 A KR19970001008 A KR 19970001008A KR 100201652 B1 KR100201652 B1 KR 100201652B1
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South Korea
Prior art keywords
damper
force
rubber
cap
dehydration
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KR1019970001008A
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Korean (ko)
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KR19980065838A (en
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장재원
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구자홍
엘지전자주식회사
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Priority to KR1019970001008A priority Critical patent/KR100201652B1/en
Publication of KR19980065838A publication Critical patent/KR19980065838A/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
    • 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
    • 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
    • F16F15/022—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 dampers and springs in combination
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (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 작용하는 수직력의 변화에 따라 댐퍼캡과의 댐퍼력(밀착력)이 변동하는 댐퍼고무와 탈수행정중에 발생하는 과도구간과 정상구간에서 댐퍼력이 변동하는 구조를 갖는 스너버바와 댐퍼고무를 감싸 수직력이 그 위로 작용하도록 하는 댐퍼 누름수단과 공지의 댐퍼캡과, 공지의 탄성수단으로 구성됨을 특징으로 하는 저소음 전자동 세탁기이다.According to the present invention, a snubber bar and a damper rubber having a structure in which a damper rubber with a damper cap (adhesive force) varies with a damper cap and a damper force fluctuates between an overtool and a normal section occurring during a dehydration stroke, It is a low-noise fully automatic washing machine, characterized in that it consists of a damper pressing means, a known damper cap, and a known elastic means for enclosing the vertical force acting thereon.

Description

저 소음 전자동 세탁기Low Noise Fully Automatic Washing Machine

제1도는 종래의 스너버의 구성 및 작동 상태도.1 is a configuration and operation state diagram of a conventional snubber.

(a) 탈수 행정의 과도 구간에서의 스너버 작동범위(a) Snubber operating range in the transient section of the dehydration stroke

(b) 탈수 행정의 정상 구간에서의 스너버 작동범위(b) Snubber operating range in the normal section of the dehydration stroke.

(c) 댐퍼고무 및 원형 코일 스프링의 구성도.(c) Diagram of damper rubber and round coil spring.

(d) 세탁조의 진동과 외부로의 전달력(d) Vibration of the washing tank and the transmission force to the outside

제2도는 본 발명 스너버 구조의 댐퍼 고부 형상 및 작동 상태도.2 is a damper top shape and operating state diagram of the snubber structure of the present invention.

(a) 탈수 행정의 과도 구간에서의 스너버 작동범위(a) Snubber operating range in the transient section of the dehydration stroke

(b) 탈수 행정의 정상 구간에서의 스너버 작동범위(b) Snubber operating range in the normal section of the dehydration stroke.

(c) 과도 구간에서의 댐퍼 고무의 형상(c) Shape of damper rubber in transient section

(d) 정상 구간에서의 댐퍼 고무의 형상(d) Shape of damper rubber in normal section

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

101 : 댐퍼캡 102 : 스프링101: damper cap 102: spring

103 : 스너버바 104 : 댐퍼고무103: snubber 104: damper rubber

105 : 댐퍼 누름판105: damper press plate

본 발명은 전자동 세탁기에서 탈수행정시에 요구되는 진동 전달 특성을 향상시켜 세탁기의 탈수시 안정성을 증가시키며 세탁조의 무게 변화에 대응하여 댐퍼력을 조절하므로서 과도 상태와 정상 탈수시의 댐퍼력을 적절히 유지하고 기존의 댐퍼력을 유지시키는 원형코일을 제거함으로서 불균일한 소음 발생요인을 줄여 소음을 저감시키는 것에 관한 것이다.The present invention improves the vibration transmission characteristics required for the dehydration administration in the fully automatic washing machine to increase the stability during dehydration of the washing machine and to adjust the damper force in response to the change in the weight of the washing tank to properly maintain the damper force during transient and normal dehydration And it is to reduce the noise by reducing the non-uniform noise generation factor by removing the circular coil to maintain the existing damper force.

종래의 전자동 세탁기에 있어서 스너버는 세탁조를 지지하는 구조로서, 세탁시에는 단순지지 구조로 세탁조가 스너버에 걸려 있는 형태를 취하고 있으며 탈수시에는 회전속도가 빨라지게 되어 세탁조 내에 존재하는 불균형력에 의한 진동특성이 나타나게 된다. 이에 따라 세탁조로부터 세탁기 케이스로 진동이 전달되게 되어 세탁기 케이스에 진동이 발생하게 되며 이에 따라 소음이 커지게 된다.In a conventional fully automatic washing machine, a snubber is a structure for supporting a washing tank, in which a washing tank is hung on a snubber with a simple supporting structure during washing, and when dewatering, the rotation speed is increased, resulting in an imbalance in the washing tank. Vibration characteristics will appear. Accordingly, the vibration is transmitted from the washing tank to the washing machine case, and the vibration is generated in the washing machine case, thereby increasing the noise.

이러한 소음 현상을 저감하기 위하여 스너버의 구조는 스프링력과 댐퍼력을 가지는 구조로 구성되게 되어 세탁조의 진동특성이 바로 세탁기의 외부 케이스로 전달되어지는 것을 방지하여 원활한 탈수 과정을 수행하도록 한다. 즉 제1도(d)에 나타난 바와 같이 탈수가 시작되어 탈수 속도가 정상 탈수 속도로 증가되는 과정에는 필연적으로 세탁기 시스템의 공진점을 통과하게 되므로 공진점 통과시 세탁조의 진폭이 커지게 된다. 이러한 상태를 과도 진동 상태라 하며 이 경우에는 스너버의 댐퍼력을 크게 하는 것이 세탁조의 진폭을 줄여 소음을 저감시킬수 있다. 한편 탈수 속도가 증가하여 정상 탈수 속도에 이르게 되면 스너버의 댐퍼력은 세탁조의 진폭에는 크게 영향을 미치지 않는다. 그러나 스너버 걸이봉을 타고 세탁기 케이스로 전달되는 전달력은 스너버의 댐퍼력이 작은 것이 케이스의 진동이나 소음을 저감시켜 유리하다.In order to reduce the noise phenomenon, the structure of the snubber is composed of a structure having a spring force and a damper force to prevent the vibration characteristics of the washing tank from being immediately transmitted to the outer case of the washing machine to perform a smooth dehydration process. That is, as shown in (d) of FIG. 1, when the dehydration starts and the dehydration speed increases to the normal dehydration speed, the amplitude of the washing tub increases when the resonant point passes. This state is called a transient vibration state. In this case, increasing the damper force of the snubber can reduce the amplitude of the washing tank to reduce noise. On the other hand, when the dehydration speed increases to reach the normal dewatering speed, the damper force of the snubber does not significantly affect the amplitude of the washing tank. However, the transfer force delivered to the washing machine case by the snubber hanger rod is advantageous because the damper force of the snubber is reduced by reducing vibration and noise of the case.

기존 스너버의 작동 원리를 살펴보면 다음과 같다.The working principle of the existing snubber is as follows.

탈수 초기에 탈수 속도가 낮은 과도 진동 구간에서는 세탁물과 세탁수의 무게에 의해 제1도(a)에서와 같이 스프링(2)이 압축 되어져 있는 상태이므로 이때 댐퍼 내부의 치수를 작게하여 댐퍼 고무(3)가 댐퍼 캡(1)과 밀착되는 성질을 이용하여 댐퍼력을 증가시키게 된다. 또한 정상탈수상태 제1도(b)에 있어서는 상당량의 세탁수가 배수됨에 따라 세탁조 내부에는 세탁물과 이것이 내포하고 있는 세탁수 정도로 무게가 줄어들게 됨에 따라 댐퍼 내부의 크기가 스너버 상단에 비하여 크게 유지되어 댐퍼 고무(3)와 댐퍼캡(1) 사이의 마찰을 줄임으로서 댐퍼력을 줄이게 된다.In the initial period of dehydration, the spring 2 is compressed as shown in FIG. 1 (a) by the weight of the laundry and the washing water in the transient vibration section where the dehydration speed is low. Therefore, the damper rubber (3 ) Increases the damper force by using the property in close contact with the damper cap (1). In addition, in the normal dehydration state (b) of FIG. 1 (b), as a considerable amount of washing water is drained, the weight of the laundry and the washing water contained in the washing tank are reduced as much as the size of the damper. The damper force is reduced by reducing the friction between the rubber 3 and the damper cap 1.

종래 기술은 탈수 회전의 상태에 따라 댐퍼력을 변화시킴에 있어서 초기의 댐퍼 형상에 따라 그 변화의 폭이 작아서 충분히 과도 진동 상태와 정상 탈수 상태의 적절한 댐퍼 상태를 유지하기 어렵다는 문제점을 안고 있으며, 과도 진동 상태의 진동 특성에 기초하여 댐퍼를 설계하는 경우 정상 탈수 상태에 있어서는 세탁기의 외부 케이스에 전달되는 진동 전달력이 커지게 됨은 물론 이로 인한 소음이 증가 하게 되고 반대의 경우 과도 상태의 진동 특성을 충분히 잡아주지 못하는 문제점이 발생하게 된다.The prior art has a problem in that it is difficult to maintain a sufficient damper state of excessive vibration and normal dehydration state because the width of the change is small according to the initial damper shape in changing the damper force according to the state of dehydration rotation. When the damper is designed based on the vibration characteristics of the vibration state, in the normal dehydration state, the vibration transmission force transmitted to the outer case of the washing machine increases, and the noise caused by this increases, and in the opposite case, the vibration characteristics of the transient state are sufficiently Problems can not be caught.

즉 세탁물의 용량에 따라서 적절히 대응하기 어려운 구조를 가지고 있다.That is, it has a structure which is difficult to respond appropriately according to the capacity of laundry.

또한 제1도(c)에서 보는 바와 같이 댐퍼 고무(3)와 댐퍼캡(1) 사이의 마찰특성을 고르게 하기 위하여 댐퍼 고무(3) 내부에 원형으로 구성된 코일 스프링(4)을 두게 되는데 이것이 균일한 원주 방향의 힘을 주지 못하게 됨으로서 마찰 댐퍼력이 균일하지 못하게 되어 탈수시 불규칙한 소음이 발생하여 전체적인 소음의 크기가 커지게 되는 문제점이 있다.In addition, as shown in FIG. 1 (c), a coil spring 4 having a circular shape is placed inside the damper rubber 3 so as to evenly friction between the damper rubber 3 and the damper cap 1. By not giving a force in the circumferential direction, the friction damper force is not uniform, there is a problem that an irregular noise occurs when dewatering to increase the overall noise level.

본 발명은 이러한 점을 감안하여 발명된 것으로서, 탈수 행정시에 나타나는 과도 진동 상태와 정상 탈수 상태에 대한 진동 특성에 적절히 대응하기 위하여 댐퍼력을 유연하게 변화 시킬 수 있는 구조로 되었고 특히 과도 진동 상태와 정상상태의 댐퍼력의 변화를 탈수에 따른 세탁물의 무게 변화에 의해 조절되도록 스너버 구조를 구성하였다.The present invention has been invented in view of such a point, and has been made in such a way that the damper force can be flexibly changed in order to appropriately cope with the vibration characteristics of the dehydration stroke and the vibration characteristics of the normal dehydration state. The snubber structure was constructed so that the change of the damper force in the steady state was controlled by the change in the weight of the laundry according to dehydration.

따라서 이를 첨부된 도면에 의거하여 상세히 설명하면 다음과 같다.Therefore, it will be described in detail with reference to the accompanying drawings as follows.

제2도에서와 같이 댐퍼력에 큰 영향을 미치는 마찰 특성을 세탁조의 무게 변화에 따라 적절히 변화시키기 위하여 수직 방향으로 힘을 주었을 때 수평방향으로 유연히 늘어나는 댐퍼 고무(104)와, 댐퍼 고무의 누름판(105)과, 댐퍼캡(101)과, 스프링(102)과, 스너버바(103)로 구성된다.As shown in FIG. 2, the damper rubber 104 stretches flexibly in the horizontal direction when a force is applied in the vertical direction in order to appropriately change the frictional characteristics that greatly affect the damper force according to the weight change of the washing tub, and the pressing plate of the damper rubber ( 105, a damper cap 101, a spring 102, and a snubber bar 103.

본 발명에 따른 댐퍼고무(104)와 댐퍼캡(101)과의 밀착력은 댐퍼고무를 누르고 있는 누름판의 수직력에 의하여 조절하게 된다.The adhesion between the damper rubber 104 and the damper cap 101 according to the present invention is controlled by the vertical force of the pressing plate holding the damper rubber.

즉, 세탁조내의 무게가 변함에 따라 댐퍼고무 누름판(105)에 작용하는 수직력이 변하게 되고 댐퍼 고무의 눌림 상태에 따라 댐퍼 고무의 밀착력이 변하게 된다. 탈수 초기에는 세탁조가 무겁기 때문에 댐퍼고무 누름판(105)에 작용하는 수직력이 커서 댐퍼고무(104)와 댐퍼캡(101)과의 밀착력이 커지고 따라서 댐퍼력이 커진다. 반면 탈수가 계속 진행되면서 탈수되는 물을 계속 배수시키므로 세탁조의 무게가 감소하여 이에 따라 댐퍼 고무 누름판에 작용하는 수직력도 감소하게 되어 댐퍼력도 작아진다.That is, the vertical force acting on the damper rubber press plate 105 is changed as the weight in the washing tank is changed, and the adhesion force of the damper rubber is changed according to the pressed state of the damper rubber. Since the washing tank is heavy in the initial stage of dehydration, the vertical force acting on the damper rubber press plate 105 is large, and thus the adhesion force between the damper rubber 104 and the damper cap 101 is increased, thus increasing the damper force. On the other hand, as the dehydration continues, the water being drained continues to be drained, thus reducing the weight of the washing tank, thereby reducing the vertical force acting on the damper rubber press plate, thereby reducing the damper force.

댐퍼고무의 밀착력은 댐퍼고무와 누름판의 구조에 의해 바같 방향으로 일정하게 작용하게 되므로 항상 댐퍼캡과 댐퍼 고무 사이의 밀착면 둘레에 동일한 힘을 작용시킨다. 따라서 불균일한 힘의 작용으로 인한 댐퍼력의 손실을 줄일 수 있고 이로 인한 불규칙한 소음이 발생을 줄일 수 있게 된다.The adhesion force of the damper rubber is constantly acting in the same direction by the structure of the damper rubber and the pressure plate, and therefore always exerts the same force around the contact surface between the damper cap and the damper rubber. Therefore, it is possible to reduce the loss of the damper force due to the action of the non-uniform force, thereby reducing the occurrence of irregular noise.

Claims (2)

작용하는 수직력의 변화에 따라 댐퍼캡과의 댐퍼력(밀착력)이 변동하는 댐퍼고무와, 탈수행정중에 발생하는 과도구간과 정상구간에서 댐퍼력이 변동하는 구조를 갖는 스너버바와, 댐퍼고무를 감싸 수직력이 그 위로 작용하도록 하는 댐퍼 누름수단과, 공지의 댐퍼캡과, 공지의 탄성수단으로 구성됨을 특징으로 하는 저소음 전자동 세탁기.Wraps a damper rubber with a damper rubber whose damper force (adhesive force) changes with the damper cap, a snubber bar that has a structure in which the damper force varies between the overtool and the normal section occurring during the dehydration stroke, and the damper rubber. A low noise fully automatic washing machine comprising a damper pressing means for allowing a vertical force to act thereon, a known damper cap, and a known elastic means. 제1항에 있어서, 댐퍼 고무에 작용하는 수직력의 변화와 댐퍼고무의 댐퍼캡 내의 위치 변화에 따라 댐퍼캡과의 댐퍼력(밀착력)이 증대 또는 감소되는 구조를 특징으로 하는 저소음 전자동 세탁기.The low noise fully automatic washing machine according to claim 1, wherein the damper force (adhesive force) with the damper cap is increased or decreased in accordance with a change in the vertical force acting on the damper rubber and a change in position of the damper rubber in the damper cap.
KR1019970001008A 1997-01-15 1997-01-15 A low noise washer KR100201652B1 (en)

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