WO2011057372A1 - Damping device for the suspension system of a laundry machine - Google Patents

Damping device for the suspension system of a laundry machine Download PDF

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Publication number
WO2011057372A1
WO2011057372A1 PCT/BR2010/000371 BR2010000371W WO2011057372A1 WO 2011057372 A1 WO2011057372 A1 WO 2011057372A1 BR 2010000371 W BR2010000371 W BR 2010000371W WO 2011057372 A1 WO2011057372 A1 WO 2011057372A1
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WO
WIPO (PCT)
Prior art keywords
damping device
elastic
damping
stop
sealing part
Prior art date
Application number
PCT/BR2010/000371
Other languages
French (fr)
Portuguese (pt)
Inventor
Rodrigo França Alves MARQUES
Carlos Eduardo B. Toledo
Wladimir Alex M. Barcha
Original Assignee
Whirlpool S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whirlpool S.A. filed Critical Whirlpool S.A.
Publication of WO2011057372A1 publication Critical patent/WO2011057372A1/en

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Classifications

    • 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
    • D06F37/20—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

Definitions

  • the present invention relates to a damping device for washing machines and, more specifically, a damping device for vertical axis washing machines.
  • the wash tank In vertical loading and top loading washing machines, the wash tank is kept suspended inside a structural cabinet, and a basket for receiving the load of laundry to be washed is mounted inside the tank.
  • an agitator / impeller mounted inside the basket is used to move the load of laundry to be washed and the washing liquid into the basket.
  • the basket is rotated at a generally higher rotation than that printed on the basket or agitator / impeller during washing operations.
  • This basket spinning operation creates an intense vibration in the basket / tank assembly, which is aggravated by an unbalanced load of clothes inside the basket.
  • This vibration generates undesirable noise and, if transmitted to the structural cabinet, causes it to move over the floor, generating the undesirable phenomenon known as "walking", where the washing machine "walks" during washing and spinning operations. .
  • a suspension is provided between the tank and the structural enclosure.
  • a system generally comprises a spring element (e.g. a coil) and a damping device (e.g. a pneumatic damping shell).
  • This suspension system which acts by dissipating kinetic energy during centrifugation, is especially useful during the transition regime (when basket rotation is accelerating), when the rotor is at its most critical speed.
  • the present invention achieves the above objectives by means of a damping device for the suspension system of a washing machine of the type which comprises a washing liquid holding tank suspended within a structural cabinet, the washing system.
  • suspension comprising at least one suspension rod with a first end coupled to the inner wall of the cabinet and a second end coupled to the outer wall of the tank, a pneumatic sealing hull coupled to the rod and enclosing an elastic accumulator element and a sealing part in contact with the hull wall
  • the damping device comprising a guide member attached to the rod, the guide member comprising a first stop and a second stop, the sealing member being able to move axially between the first and second stops of the Guide element.
  • the damping device further comprises a limiting element attached to the first stop and receiving the elastic accumulating element, whereby the fixing between the limiting element and the guide element may be made, for example, by a locking ring. compression.
  • the damping device comprises a first elastic attenuation member between the first anvil and the sealing part, and a second elastic attenuating element between the second anvil and the sealing part.
  • such elastic attenuation elements are springs.
  • Figure 1 - Figure 1 illustrates a simplified schematic view of a conventional suspension system, showing in section the tank and cabinet of a conventional washing machine;
  • Figure 2 - Figure 2 illustrates a cross-sectional view of a conventional suspension rod connected to a pneumatic hull comprising a prior art damping device
  • Figure 3 - Figure 3 illustrates the detail D1 shown in Figure 2;
  • Figure 4 - Figure 4 illustrates the detail D2 shown in Figure 3;
  • Figure 5 - Figure 5 shows a cross-sectional view of a preferred embodiment of the damping device of the present invention
  • Figure 6 - Figure 6 illustrates in sectional view of an alternative embodiment of the damping device of the present invention
  • Figure 7 - Figure 7 illustrates a detail view of the device illustrated in Figure 6.
  • Figure 1 illustrates a schematic view of a conventional suspension system of the type comprising at least one suspension rod 10 with a first end coupled to the inner wall of the cabinet 11 and a second end coupled to the outer wall of the tank 12, and a pneumatic sealing hull 20 coupled to rod 10.
  • This type of sealing system is known in the art and widely used in "Hung Suspension” type vertical suspension and suspension washers.
  • conventional sealing part 70 comprises a first washer 120 for stiffening conventional sealing part 70, a spring 130 for maintaining contact pressure between part 70 and hull 20, and a second washer 140 serving as support for part 70 on the end of the rod 10.
  • the device of the present invention is aimed at attenuating or eliminating the relative movement between the sealing part and the hull for a small displacement range, reducing the friction damping for that small range.
  • the damping device of the present invention comprises a hull 2 connected to the end of the suspension rod 1, an elastic accumulator element 3 inner to the hull, and an inner sealing part 7 in contact with the hull. 2.
  • a guide element 6 is rigidly fixed to the rod 1 and comprises a first stop 10 and a second stop 11, so that the sealing piece 7 can move axially between the stops 10, 11.
  • the sealing part 7 can follow the movement of the hull, eliminating or attenuating the fictional friction that would be caused by a relative movement between these parts.
  • a spring 13 is further provided to maintain the contact pressure between the part 7 and the hull 2, however, this spring 13 may be unnecessary depending on the material chosen for the part 7.
  • the sealing part 7 moves together with the hull 2, sliding freely on the guide element 6 until it meets the stop 12. Only then does friction between the hull 2 and the sealing part 7 occur.
  • the elastic accumulator 3 pushes the hull 2 upwards.
  • the sealing part 7 follows integrally with the hull 2, sliding upwards on the guide element 6 until it reaches the stop 11, from when it starts to rub against the hull 2, promoting damping.
  • the practical effect of this suspension is to eliminate damping in the region where the sealing part 7 moves together with the hull 2 by sliding over the guide element 6. This reduces the transmissibility of stresses to the cabinet, eliminating the undesirable consequence of prior art device.
  • the device of the present invention further comprises a limiting element 5 which is fixed to the guide element 6 and acts as a base for the damping element 3.
  • the attachment between the limiting element 5 and the element The guide 6 can be made, for example, by means of a compression ring 4. It should be noted, however, that this element 5 is optional and is intended only to improve the attachment of the elastic element 3.
  • two additional elastic elements 8, 9 are further provided to attenuate the displacement of the sealing part 7 between the stops 10, 11.
  • first elastic attenuation member 8 is coupled between the sealing part 7 and the first stop 11 and a second elastic attenuation element 9 is coupled between the sealing part 7 and the second stop 12.
  • first and second elastic attenuation elements 8,9 are preferably springs.
  • the springs 8, 9 allow a certain extent of relative movement to be provided between the sealing part 7 and the hull 2 so as not to completely cancel out the friction damping effect.
  • the dimensions of the guide member 6 and the stiffness of the elastic members 8 and 9 may be designed to lessen the negative effects of friction damping, while maintaining the necessary damping level to avoid the unwanted effects of friction damping. set vibration.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The present invention relates to a damping device for the suspension system of a laundry machine, of the type comprising a washing liquid tank suspended inside a structural frame. The suspension system comprises at least one suspension rod (1), a pneumatic sealing shell (2) coupled to the rod (1) and containing an elastic accumulator (3) and a sealing element (7) in contact with the wall of the shell (2). The device according to the present invention comprises a guiding element (6) attached to the rod (1) in such a way that the sealing element (7) can move in the axial direction.

Description

"DISPOSITIVO DE AMORTECIMENTO PARA O SISTEMA DE SUSPENSÃO DE UMA "DAMPING DEVICE FOR THE SUSPENSION SYSTEM OF A
MÁQUINA LAVADORA DE ROUPAS" WASHING MACHINE "
Campo da Invenção  Field of the Invention
A presente invenção refere-se a um dispositivo de amortecimento para máquinas lavadoras de roupas e, mais especificamente, a um dispositivo de amortecimento para máquinas lavadoras de roupa de eixo vertical.  The present invention relates to a damping device for washing machines and, more specifically, a damping device for vertical axis washing machines.
Fundamentos da Invenção  Background of the Invention
Nas máquinas lavadoras de roupas de eixo vertical e carregamento superior, o tanque de lavagem é mantido suspenso no interior de um gabinete estrutural, e um cesto para recepção da carga de roupas a ser lavada é montado no interior do tanque.  In vertical loading and top loading washing machines, the wash tank is kept suspended inside a structural cabinet, and a basket for receiving the load of laundry to be washed is mounted inside the tank.
Durante a operação de lavagem, um agitador / impulsor montado no interior do cesto é utilizado para movimentar a carga de roupas a ser lavada e o líquido de lavagem dentro do cesto. Durante a centrifugação - operação na qual a água remanescente do processo de lavagem é retirada da carga de roupas - o cesto é girado a uma rotação geralmente mais elevada do que aquela imprimida ao cesto ou ao agitador/ impulsor durante as operações de lavagem.  During the washing operation, an agitator / impeller mounted inside the basket is used to move the load of laundry to be washed and the washing liquid into the basket. During spinning - operation in which the remaining water from the washing process is removed from the laundry load - the basket is rotated at a generally higher rotation than that printed on the basket or agitator / impeller during washing operations.
Essa operação de giro do cesto cria uma intensa vibração no conjunto cesto/tanque, que é agravada pela existência de uma carga de roupas desbalanceada no interior do cesto. Essa vibração gera ruído indesejável, e, se transmitida ao gabinete estrutural, faz com que o mesmo se desloque sobre o piso, gerando o fenómeno indesejável conhecido como "walking", onde a lavadora de roupas "caminha" durante as operações de lavagem e centrifugação.  This basket spinning operation creates an intense vibration in the basket / tank assembly, which is aggravated by an unbalanced load of clothes inside the basket. This vibration generates undesirable noise and, if transmitted to the structural cabinet, causes it to move over the floor, generating the undesirable phenomenon known as "walking", where the washing machine "walks" during washing and spinning operations. .
Para evitar esse inconveniente, é provida uma suspensão entre o tanque e o gabinete estrutural. Tal sistema compreende geralmente um elemento de mola (por exemplo, uma bobina) e um dispositivo de amortecimento (por exemplo, um casco de amortecimento pneumático).  To avoid this inconvenience, a suspension is provided between the tank and the structural enclosure. Such a system generally comprises a spring element (e.g. a coil) and a damping device (e.g. a pneumatic damping shell).
Esse sistema de suspensão, que atua dissipando energia cinética durante a centrifugação, é especialmente útil durante o regime de transição (quando a rotação do cesto está acelerando), quando o rotor passa por sua velocidade mais crítica.  This suspension system, which acts by dissipating kinetic energy during centrifugation, is especially useful during the transition regime (when basket rotation is accelerating), when the rotor is at its most critical speed.
Entretanto, quando o rotor está em regime permanente (quando o cesto está giran- do em uma velocidade constante, mais rápida), o efeito amortecedor se torna indesejável, pois aumenta a transmissibilidade do sistema: ocorre a transmissão de forças que acabam causando a vibração do gabinete estrutural.  However, when the rotor is in a steady state (when the basket is rotating at a constant, faster speed), the damping effect becomes undesirable as it increases system transmissibility: forces are transmitted that eventually cause vibration. of the structural cabinet.
Assim, existe a necessidade de um meio capaz de fornecer uma suspensão adequada, mas que elimine o efeito de amortecimento do dispositivo de amortecimento durante a rotação estacionária do cesto.  Thus, there is a need for a means capable of providing adequate suspension, but which eliminates the damping effect of the damping device during stationary rotation of the basket.
Objetivos da Invenção  Objectives of the Invention
Em vista do acima exposto, é um dos objetivos da presente invenção prover um amortecimento eficiente durante o regime de transição do rotor, mas que elimine ou atenue o amortecimento durante a rotação permanente do cesto. In view of the foregoing, it is an object of the present invention to provide a efficient damping during the rotor transition regime, but eliminating or mitigating damping during permanent basket rotation.
Sumário da Invenção  Summary of the Invention
A presente invenção atinge os objetivos acima por meio de um dispositivo de amor- tecimento para o sistema de suspensão de uma máquina lavadora de roupas do tipo que compreende um tanque de contenção de líquido de lavagem suspenso no interior de um gabinete estrutural, o sistema de suspensão compreendendo pelo menos uma haste de suspensão com uma primeira extremidade acoplada à parede interna do gabinete e uma segunda extremidade acoplada à parede externa do tanque, um casco de vedação pneumá- tico acoplado à haste e encerrando um elemento acumulador elástico e uma peça de vedação em contato com a parede do casco, o dispositivo de amortecimento compreendendo um elemento guia fixo à haste, o elemento guia compreendendo um primeiro batente e um segundo batente, a peça de vedação sendo capaz de deslocar-se axialmente entre os primeiro e segundo batentes do elemento guia.  The present invention achieves the above objectives by means of a damping device for the suspension system of a washing machine of the type which comprises a washing liquid holding tank suspended within a structural cabinet, the washing system. suspension comprising at least one suspension rod with a first end coupled to the inner wall of the cabinet and a second end coupled to the outer wall of the tank, a pneumatic sealing hull coupled to the rod and enclosing an elastic accumulator element and a sealing part in contact with the hull wall, the damping device comprising a guide member attached to the rod, the guide member comprising a first stop and a second stop, the sealing member being able to move axially between the first and second stops of the Guide element.
Em uma concretização da invenção, o dispositivo de amortecimento compreende ainda um elemento limitador fixo ao primeiro batente e recebendo o elemento acumulador elástico, sendo que a fixação entre o elemento limitador e o elemento de guia pode ser feita, por exemplo, por um anel de compressão.  In one embodiment of the invention the damping device further comprises a limiting element attached to the first stop and receiving the elastic accumulating element, whereby the fixing between the limiting element and the guide element may be made, for example, by a locking ring. compression.
Em uma concretização preferida da invenção, o dispositivo de amortecimento com- preende um primeiro elemento elástico de atenuação entre o primeiro batente e a peça de vedação, e um segundo elemento elástico de atenuação entre o segundo batente e a peça de vedação.  In a preferred embodiment of the invention, the damping device comprises a first elastic attenuation member between the first anvil and the sealing part, and a second elastic attenuating element between the second anvil and the sealing part.
Ainda na concretização preferida, tais elementos elásticos de atenuação são molas. Descrição Resumida dos Desenhos  Still in the preferred embodiment, such elastic attenuation elements are springs. Brief Description of the Drawings
As figuras mostram:  The figures show:
Figura 1 - A figura 1 ilustra uma vista esquemática simplificada de um sistema de suspensão convencional, sendo ilustrados em corte o tanque e o gabinete de uma máquina de lavar roupas convencional;  Figure 1 - Figure 1 illustrates a simplified schematic view of a conventional suspension system, showing in section the tank and cabinet of a conventional washing machine;
Figura 2 - A figura 2 ilustra uma vista em corte de uma haste de suspensão con- vencional, conectada a um casco pneumático compreendendo um dispositivo de amortecimento da técnica anterior;  Figure 2 - Figure 2 illustrates a cross-sectional view of a conventional suspension rod connected to a pneumatic hull comprising a prior art damping device;
Figura 3 - A figura 3 ilustra o detalhe D1 mostrado na Figura 2;  Figure 3 - Figure 3 illustrates the detail D1 shown in Figure 2;
Figura 4 - A figura 4 ilustra o detalhe D2 mostrado na Figura 3;  Figure 4 - Figure 4 illustrates the detail D2 shown in Figure 3;
Figura 5 - A figura 5 ilustra uma seção em corte transversal de uma concretização preferencial do dispositivo de amortecimento da presente invenção;  Figure 5 - Figure 5 shows a cross-sectional view of a preferred embodiment of the damping device of the present invention;
Figura 6 - A figura 6 ilustra em corte lateral de uma concretização alternativa do dispositivo de amortecimento da presente invenção; e Figura 7 - A figura 7 ilustra uma vista em detalhe do dispositivo ilustrado na figura 6. Descrição Detalhada da Invenção Figure 6 - Figure 6 illustrates in sectional view of an alternative embodiment of the damping device of the present invention; and Figure 7 - Figure 7 illustrates a detail view of the device illustrated in Figure 6. Detailed Description of the Invention
A presente invenção será, a seguir, mais detalhadamente descrita com base nos exemplos de execução representados nos desenhos.  The present invention will hereinafter be described in more detail based on the exemplary embodiments shown in the drawings.
A figura 1 ilustra uma vista esquemática de um sistema de suspensão convencional, do tipo que compreende pelo menos uma haste de suspensão 10 com uma primeira extremidade acoplada à parede interna do gabinete 11 e uma segunda extremidade acoplada à parede externa do tanque 12, e um casco de vedação pneumático 20 acoplado à haste 10. Esse tipo de sistema de vedação é conhecido da técnica e largamente utilizado em má- quinas de lavar de eixo vertical e suspensão do tipo "Hung Suspension" (tanque suspenso no gabinete).  Figure 1 illustrates a schematic view of a conventional suspension system of the type comprising at least one suspension rod 10 with a first end coupled to the inner wall of the cabinet 11 and a second end coupled to the outer wall of the tank 12, and a pneumatic sealing hull 20 coupled to rod 10. This type of sealing system is known in the art and widely used in "Hung Suspension" type vertical suspension and suspension washers.
Conforme ilustrado na figura 3, dentro do casco de vedação 20, é previsto um elemento acumulador elástico 30 e uma peça de vedação 70 em contato com o casco 20.  As shown in Figure 3, inside the sealing shell 20, there is provided an elastic accumulator element 30 and a sealing part 70 in contact with the shell 20.
Conforme pode ser visto na figura 4, a peça de vedação convencional 70 compre- ende uma primeira arruela 120 para dar rigidez à peça de vedação convencional 70, uma mola 130 para manter a pressão de contato entre a peça 70 e o casco 20, e uma segunda arruela 140 que serve como apoio para a peça 70 sobre a extremidade da haste 10.  As can be seen from Figure 4, conventional sealing part 70 comprises a first washer 120 for stiffening conventional sealing part 70, a spring 130 for maintaining contact pressure between part 70 and hull 20, and a second washer 140 serving as support for part 70 on the end of the rod 10.
Assim, quando o tanque é forçado para baixo, o casco 20 é empurrado para baixo, pressionando a mola 30 e atritando com a peça de vedação 70, gerando amortecimento. Quando o peso do tanque é aliviado sobre a suspensão, a mola 30 retorna, empurrando o casco 20 para cima, e a peça de vedação 70 para baixo, gerando um movimento relativo entre o casco 20 e a peça 70, e consequentemente, uma dissipação de energia por atrito (amortecimento). Deve ser notado que há atrito do início ao fim do movimento, tanto no caso da compressão quanto na distensão da mola.  Thus, when the tank is forced downwardly, the hull 20 is pushed downward, pressing the spring 30 and rubbing with the sealing part 70, generating damping. When the weight of the tank is relieved on the suspension, the spring 30 returns, pushing the hull 20 up and the sealing piece 70 down, generating relative movement between the hull 20 and the part 70, and consequently a dissipation. energy by friction (damping). It should be noted that there is friction from start to finish of movement, both in the case of compression and spring distension.
A ocorrência desse amortecimento por fricção é particularmente útil durante o regime transiente da máquina (ou seja, quando a velocidade de rotação do cesto está aumentando), no entanto, é indesejável quando o cesto está girando em sua velocidade máxima, ou seja, quando o regime de rotação é permanente (sem aceleração).  The occurrence of this friction damping is particularly useful during transient machine speed (ie when the basket's rotation speed is increasing), however it is undesirable when the basket is spinning at its maximum speed, ie when the Rotation regime is permanent (no acceleration).
O dispositivo da presente invenção visa justamente atenuar ou eliminar o movimen- to relativo entre a peça de vedação e o casco para uma pequena faixa de deslocamento, diminuindo o amortecimento por fricção para essa pequena faixa.  The device of the present invention is aimed at attenuating or eliminating the relative movement between the sealing part and the hull for a small displacement range, reducing the friction damping for that small range.
Conforme ilustrado nas figuras 6 a 7, o dispositivo de amortecimento da presente invenção compreende um casco 2 conectado à extremidade da haste de suspensão 1 , um elemento acumulador elástico 3 interior ao casco, e uma peça de vedação 7 interior e em contato com o casco 2.  As illustrated in Figures 6 to 7, the damping device of the present invention comprises a hull 2 connected to the end of the suspension rod 1, an elastic accumulator element 3 inner to the hull, and an inner sealing part 7 in contact with the hull. 2.
Um elemento guia 6 é fixado de maneira rígida à haste 1 e compreende um primero batente 10 e um segundo batente 11 , de modo que a peça de vedação 7 pode desloca-se axialmente entre os batentes 10, 11. Assim, para deslocamentos pequenos, a peça de vedação 7 pode acompanhar o movimento do casco, eliminando ou atenuando o atrito ficcional que seria causado por um movimento relativo entre essas peças. A guide element 6 is rigidly fixed to the rod 1 and comprises a first stop 10 and a second stop 11, so that the sealing piece 7 can move axially between the stops 10, 11. Thus, for small displacements, the sealing part 7 can follow the movement of the hull, eliminating or attenuating the fictional friction that would be caused by a relative movement between these parts.
Na concretização ilustrada na figura 5, é prevista ainda uma mola 13 para manter a pressão de contato entre a peça 7 e o casco 2, entretanto, essa mola 13 pode ser desnecessária dependendo do material escolhido para a peça 7.  In the embodiment illustrated in Figure 5, a spring 13 is further provided to maintain the contact pressure between the part 7 and the hull 2, however, this spring 13 may be unnecessary depending on the material chosen for the part 7.
Da mesma maneira que o mencionado anteriormente em relação à técnica anterior, quando o tanque é forçado para baixo, o casco 2 é empurrado para baixo, pressionando o elemento acumulador elástico 3.  As mentioned above with respect to the prior art, when the tank is forced downwardly, the hull 2 is pushed downward by pressing the elastic accumulator element 3.
Na presente invenção, a peça de vedação 7 se move juntamente com o casco 2, deslizando livremente sobre o elemento guia 6 até encontrar o batente 12. Apenas a partir deste instante passa a haver atrito entre o casco 2 e a peça de vedação 7. No retorno do movimento, quando o peso do tanque é aliviado da suspensão, o elemento acumulador e- lástico 3 empurra o casco 2 para cima. A peça de vedação 7 segue solidária ao casco 2, deslizando para cima sobre o elemento guia 6 até atingir o batente 11 , a partir de quando ele passa a atritar com o casco 2, promovendo amortecimento. O efeito prático desta suspensão é de eliminar o amortecimento na região em que a peça de vedação 7 se move junto com o casco 2, deslizando sobre o elemento guia 6. Isto reduz a transmissibilidade de esforços para o gabinete, eliminando a consequência indesejável decorrente do dispositivo da técnica anterior.  In the present invention, the sealing part 7 moves together with the hull 2, sliding freely on the guide element 6 until it meets the stop 12. Only then does friction between the hull 2 and the sealing part 7 occur. On return of movement, when the weight of the tank is relieved from the suspension, the elastic accumulator 3 pushes the hull 2 upwards. The sealing part 7 follows integrally with the hull 2, sliding upwards on the guide element 6 until it reaches the stop 11, from when it starts to rub against the hull 2, promoting damping. The practical effect of this suspension is to eliminate damping in the region where the sealing part 7 moves together with the hull 2 by sliding over the guide element 6. This reduces the transmissibility of stresses to the cabinet, eliminating the undesirable consequence of prior art device.
Na concretização da invenção ilustrada nas figuras 6 e 7, o dispositivo da presente invenção compreende ainda um elemento limitador 5 que é fixado ao elemento guia 6 e atua como base para o elemento de amortecimento 3. A fixação entre o elemento limitador 5 e o elemento guia 6 pode ser feita, por exemplo, por meio de um anel de compressão 4. Deve ser notado, entretanto, que esse elemento 5 é opcional e visa apenas aperfeiçoar a fixação do elemento elástico 3.  In the embodiment of the invention illustrated in figures 6 and 7, the device of the present invention further comprises a limiting element 5 which is fixed to the guide element 6 and acts as a base for the damping element 3. The attachment between the limiting element 5 and the element The guide 6 can be made, for example, by means of a compression ring 4. It should be noted, however, that this element 5 is optional and is intended only to improve the attachment of the elastic element 3.
Conforme ilustrado na figura 7, nessa concretização da presente invenção, são previstos ainda dois elementos elásticos adicionais 8, 9 para atenuar o deslocamento da peça de vedação 7 entre os batentes 10, 11.  As illustrated in Figure 7, in this embodiment of the present invention, two additional elastic elements 8, 9 are further provided to attenuate the displacement of the sealing part 7 between the stops 10, 11.
Assim, um primeiro elemento elástico de atenuação 8 é acoplado entre a peça de vedação 7 e o primeiro batente 11 e um segundo elemento elástico de atenuação 9 é acoplado entre a peça de vedação 7 e o segundo batente 12. Conformem ilustrado nas figuras 6 e 7, os primeiro e segundo elementos elástico de atenuação 8,9 são preferencialmente molas.  Thus, a first elastic attenuation member 8 is coupled between the sealing part 7 and the first stop 11 and a second elastic attenuation element 9 is coupled between the sealing part 7 and the second stop 12. As illustrated in FIGS. 6 and 7, the first and second elastic attenuation elements 8,9 are preferably springs.
As molas 8, 9 permitem que seja proporcionada uma certa extensão de movimento relativo entre a peça de vedação 7 e o casco 2, de modo a não anular completamente o efeito amortecedor por fricção. Nesse sentido, deve ser notado que as dimensões do elemento guia 6 e a rigidez dos elementos elásticos 8 e 9 podem ser projetados de modo a diminuir os efeitos negativos do amortecimento de fricção, mas mantendo o nível de amortecimento necessário para evitar os efeitos indesejados da vibração do conjunto. The springs 8, 9 allow a certain extent of relative movement to be provided between the sealing part 7 and the hull 2 so as not to completely cancel out the friction damping effect. In this regard, it should be noted that the dimensions of the guide member 6 and the stiffness of the elastic members 8 and 9 may be designed to lessen the negative effects of friction damping, while maintaining the necessary damping level to avoid the unwanted effects of friction damping. set vibration.
Deve ser entendido que a descrição fornecida com base nas figuras acima se refere apenas a concretizações possíveis para o dispositivo de amortecimento da presente invenção, sendo que o real escopo do objeto da invenção encontra-se definido nas reivindicações apensas.  It is to be understood that the description provided on the basis of the above figures refers only to possible embodiments for the damping device of the present invention, and the actual scope of the object of the invention is defined in the appended claims.

Claims

REIVINDICAÇÕES
1. Dispositivo de amortecimento para o sistema de suspensão de uma máquina la¬ vadora de roupas do tipo que compreende um tanque de contenção de líquido de lavagem suspenso no interior de um gabinete estrutural, o sistema de suspensão compreendendo pelo menos uma haste de suspensão (1 ) com uma primeira extremidade acoplada à parede interna do gabinete e uma segunda extremidade acoplada à parede externa do tanque, um casco de vedação pneumático (2) acoplado à haste (1) e encerrando um elemento acumulador elástico (3) e uma peça de vedação (7) em contato com a parede do casco (2), o dispositivo de amortecimento sendo CARACTERIZADO pelo fato de que compreende: 1. Device for damping suspension system for a machine it ¬ vative clothing type comprising a washing liquid holding tank suspended within the structural enclosure, the suspension system comprising at least one suspension shank ( 1) with a first end coupled to the inner wall of the cabinet and a second end coupled to the outer wall of the tank, a pneumatic sealing shell (2) coupled to the rod (1) and enclosing an elastic accumulator element (3) and a seal (7) in contact with the hull wall (2), the damping device being CHARACTERIZED by the fact that it comprises:
um elemento guia (6) fixo à haste (1 ), o elemento guia compreendendo um primeiro batente (11) e um segundo batente (12), a peça de vedação (7) sendo capaz de deslocar-se axialmente entre os primeiro e segundo batentes (11 , 12) do elemento guia (6).  a guide element (6) attached to the rod (1), the guide element comprising a first stop (11) and a second stop (12), the sealing part (7) being able to move axially between the first and second stops (11, 12) of the guide element (6).
2. Dispositivo de amortecimento, de acordo com a reivindicação 1 , CARACTERIZADO pelo fato de que compreende ainda um elemento limitador (5) fixo ao primeiro batente (11 ) e recebendo o elemento acumulador elástico (3).  Damping device according to claim 1, characterized in that it further comprises a limiting element (5) attached to the first stop (11) and receiving the elastic accumulating element (3).
3. Dispositivo de amortecimento, de acordo com a reivindicação 2, CARACTERIZADO pelo fato de que a fixação entre o elemento limitador (5) e o elemento de guia (6) é feita por um anel de compressão (4).  Damping device according to claim 2, characterized in that the fastening between the limiting element (5) and the guide element (6) is made by a compression ring (4).
4. Dispositivo de amortecimento, de acordo com qualquer uma das reivindicações 1 a 3, CARACTERIZADO pelo fato de que compreende um primeiro elemento elástico de a- tenuação (8) entre o primeiro batente (11 ) e a peça de vedação (7), e um segundo elemento elástico de atenuação (9) entre o segundo batente (12) e a peça de vedação (7).  Damping device according to any one of claims 1 to 3, characterized in that it comprises a first elastic damping element (8) between the first stop (11) and the sealing part (7); and a second elastic attenuation element (9) between the second stop (12) and the sealing part (7).
5. Dispositivo de amortecimento, de acordo com a reivindicação 4, CARACTERIZADO pelo fato de que os primeiro e segundo elementos elásticos de atenua- ção (8, 9) são molas.  Damping device according to claim 4, characterized in that the first and second elastic attenuating elements (8, 9) are springs.
PCT/BR2010/000371 2009-11-11 2010-11-09 Damping device for the suspension system of a laundry machine WO2011057372A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0904790-5A BRPI0904790A2 (en) 2009-11-11 2009-11-11 DAMPING DEVICE FOR THE SUSPENSION SYSTEM OF A CLOTHING WASHER
BRPI0904790-5 2009-11-11

Publications (1)

Publication Number Publication Date
WO2011057372A1 true WO2011057372A1 (en) 2011-05-19

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PCT/BR2010/000371 WO2011057372A1 (en) 2009-11-11 2010-11-09 Damping device for the suspension system of a laundry machine

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WO (1) WO2011057372A1 (en)

Cited By (3)

* 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
CN106149297A (en) * 2016-07-29 2016-11-23 无锡小天鹅股份有限公司 The hanger rod component of rotary drum washing machine and the rotary drum washing machine with it
WO2022121292A1 (en) * 2020-12-09 2022-06-16 青岛海尔洗衣机有限公司 Washing machine

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JPH06277389A (en) * 1993-03-29 1994-10-04 Matsushita Electric Ind Co Ltd Vibration control device for automatic washing machine
DE10046712A1 (en) * 1999-10-14 2001-04-19 Suspa Holding Gmbh Shock absorber esp. for washing machine with spinning operation with tubular housing with plunger guided sliding in this and measuring element is respectively connected with housing and plunger and their relative position
JP2003144792A (en) * 2001-11-13 2003-05-20 Hitachi Ltd Drum type washing machine
KR20040097817A (en) * 2003-05-13 2004-11-18 엘지전자 주식회사 Damper of washing machine
US20050188472A1 (en) * 2004-02-23 2005-09-01 Lg Electronics Inc. Washer damper thereof, and control method thereof
EP1637640A1 (en) * 2004-09-15 2006-03-22 SUSPA Holding GmbH Damper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06277389A (en) * 1993-03-29 1994-10-04 Matsushita Electric Ind Co Ltd Vibration control device for automatic washing machine
DE10046712A1 (en) * 1999-10-14 2001-04-19 Suspa Holding Gmbh Shock absorber esp. for washing machine with spinning operation with tubular housing with plunger guided sliding in this and measuring element is respectively connected with housing and plunger and their relative position
JP2003144792A (en) * 2001-11-13 2003-05-20 Hitachi Ltd Drum type washing machine
KR20040097817A (en) * 2003-05-13 2004-11-18 엘지전자 주식회사 Damper of washing machine
US20050188472A1 (en) * 2004-02-23 2005-09-01 Lg Electronics Inc. Washer damper thereof, and control method thereof
EP1637640A1 (en) * 2004-09-15 2006-03-22 SUSPA Holding GmbH Damper

Cited By (3)

* 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
CN106149297A (en) * 2016-07-29 2016-11-23 无锡小天鹅股份有限公司 The hanger rod component of rotary drum washing machine and the rotary drum washing machine with it
WO2022121292A1 (en) * 2020-12-09 2022-06-16 青岛海尔洗衣机有限公司 Washing machine

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