JP2008200189A - Drum type washing machine - Google Patents

Drum type washing machine Download PDF

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Publication number
JP2008200189A
JP2008200189A JP2007037940A JP2007037940A JP2008200189A JP 2008200189 A JP2008200189 A JP 2008200189A JP 2007037940 A JP2007037940 A JP 2007037940A JP 2007037940 A JP2007037940 A JP 2007037940A JP 2008200189 A JP2008200189 A JP 2008200189A
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rod
sliding member
friction sliding
cylinder
drum
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JP4791981B2 (en
JP2008200189A5 (en
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Koji Kuno
功二 久野
Hiroshi Nishimura
博司 西村
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Toshiba Corp
Toshiba Lifestyle Products and Services Corp
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Toshiba Corp
Toshiba Consumer Electronics Holdings Corp
Toshiba Home Appliances Corp
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  • Vibration Prevention Devices (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing machine capable of improving starting properties in spin drying and reducing the amount vibration and vibration sound of a housing in steady-state spin drying. <P>SOLUTION: This drum type washing machine includes an annular frictional sliding member 24 disposed in a rod 20 so as to have a clearance toward the outer circumferential face 23a of a small diameter part 23, and a pair of abutment parts (a ring member 27 and a step part 28) provided in the rod 20, having a prescribed interval A along the axial direction of the rod 20 across the frictional sliding member 24, and formed into a diameter larger than the internal diameter of the frictional sliding member 24. When the amplitude of the rod 20 is increased relative to a cylinder 16 in starting spin dry, abutment parts abut on the frictional sliding member 24 and the frictional sliding member 24 slides on the internal circumferential face 16c of the cylinder 16. When the amplitude of the rod 20 relative to the cylinder 16 is reduced in steady-state spin drying, the abutment parts is removed from the frictional sliding member 24 and the rod 20 alone reciprocates inside the cylinder 16 filled with air. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ドラムを収容する水槽と筐体との間において当該水槽を防振装置により防振支持した構成のドラム式洗濯機に関する。   The present invention relates to a drum type washing machine having a structure in which a water tank is supported by a vibration isolator between a water tank that houses a drum and a housing.

従来のドラム式洗濯機は、一般的に、洗濯水を貯水する水槽内に、洗濯物を収容するための横軸型ドラムを回転可能に設けて構成されている。この構成の場合、ドラムは、軸受で支持された回転シャフトを介してモータによって回転駆動されるものであり、ドラムを収容する水槽は、洗濯、脱水、乾燥等の各行程で生じる振動が筐体へ直接伝達されないよう複数の防振装置で支持されている。このような防振装置として、主にオイル式の防振装置と摩擦式の防振装置が知られている。   Conventional drum-type washing machines are generally configured such that a horizontal axis drum for storing laundry is rotatably provided in a water tank for storing washing water. In this configuration, the drum is rotationally driven by a motor through a rotating shaft supported by a bearing, and the water tank that houses the drum is subject to vibration generated in each process such as washing, dehydration, and drying. It is supported by a plurality of anti-vibration devices so as not to be transmitted directly. As such a vibration isolator, mainly an oil type vibration isolator and a friction type vibration isolator are known.

オイル式の防振装置は、内部がオイルで満たされたシリンダ内を軸方向に沿って相対的に往復動するロッドの先端部に、軸方向に貫通した複数の孔を有するピストンを備えている。そして、ロッドとともにピストンが往復動する際に当該ピストンの孔を通過するオイルの粘性により、水槽の振動を減衰させるようになっている。
一方、摩擦式の防振装置は、内部が空気で満たされたシリンダ内を軸方向に沿って相対的に往復動するロッドを備えており、このロッドの外周には、シリンダ内に固定された摩擦部材が配置されている。そして、ロッドが往復動する際に摩擦部材との間に発生する摩擦力により、水槽の振動を減衰させるようになっている（例えば、特許文献１参照）。 An oil-type vibration isolator includes a piston having a plurality of axially penetrating holes at the tip of a rod that reciprocally moves along an axial direction inside a cylinder filled with oil. . And when a piston reciprocates with a rod, the vibration of a water tank is attenuate | damped by the viscosity of the oil which passes the hole of the said piston.
On the other hand, the friction-type vibration isolator has a rod that reciprocally moves along the axial direction inside a cylinder filled with air, and is fixed in the cylinder on the outer periphery of the rod. A friction member is disposed. And the vibration of a water tank is attenuate | damped by the frictional force which generate | occur | produces between a friction member when a rod reciprocates (for example, refer patent document 1).

ところで、ドラム式洗濯機に用いられる防振装置としては、脱水起動時に水槽に発生する低周波振動に対しては減衰力が大きく、脱水定常時に水槽に発生する高周波振動に対しては減衰力が小さくなる特性が望まれる。   By the way, as an anti-vibration device used for a drum type washing machine, a damping force is large for a low frequency vibration generated in the water tank at the time of dehydration start, and a damping force is applied for a high frequency vibration generated in the water tank at the time of steady dehydration. Smaller characteristics are desired.

しかし、オイル式の防振装置は、減衰力が水槽の振動周波数に比例して大きくなるという特性を有するため、ドラム式洗濯機の防振装置としては適していない。そこで、オイル式の防振装置においては、ロッドに対してピストンを軸方向に移動可能に構成することにより、低周波振動に対しては、ロッドとともにピストンが往復動して減衰力が発生し、高周波振動に対しては、ロッドのみが往復動して減衰力が発生しないようにしたものが考えられている（例えば、特許文献２参照）。
一方、摩擦式の防振装置は、減衰力が水槽の振動周波数に依存しないという特性を有する。そのため、ドラム式洗濯機の防振装置として好適である。
特開２００６−２３０５９１号公報 特開２００６−３８０６４号公報 However, the oil-type vibration isolator has a characteristic that the damping force increases in proportion to the vibration frequency of the water tank, and is not suitable as a vibration isolator for a drum-type washing machine. Therefore, in the oil type vibration isolator, by configuring the piston so that it can move in the axial direction with respect to the rod, for low frequency vibration, the piston reciprocates with the rod to generate a damping force, For high-frequency vibrations, it is considered that only the rod reciprocates so that no damping force is generated (see, for example, Patent Document 2).
On the other hand, the friction type vibration isolator has a characteristic that the damping force does not depend on the vibration frequency of the water tank. Therefore, it is suitable as a vibration isolator for a drum type washing machine.
JP 2006-230591 A JP 2006-38064 A

ドラム式洗濯機は、ドラム内の洗濯物を重力に逆らって回転させる構造となっており、従って、脱水起動前において洗濯物の偏り（アンバランス）が発生しやすい。
洗濯物の偏りが発生すると、脱水起動時の水槽の振動が大きくなり脱水の起動が上手くできない場合がある。そのため、多少の洗濯物の偏りが発生した場合であっても、脱水の起動性能（脱水を上手く起動させる性能）を向上させるには、防振装置による減衰力をより大きくして脱水起動時の水槽の振動を抑えることが必要となる。 The drum-type washing machine has a structure in which the laundry in the drum is rotated against gravity, and therefore, the laundry is likely to be unbalanced before dehydration is started.
When the laundry is biased, the vibration of the water tank at the time of dehydration activation increases, and dehydration activation may not be successful. Therefore, in order to improve the dewatering start-up performance (performance to start dehydration well) even when there is a slight bias in the laundry, the damping force by the vibration isolator is increased to increase the damping force. It is necessary to suppress the vibration of the aquarium.

ここで、摩擦式の防振装置においてより大きな減衰力を実現するには、ロッドに発生する摩擦力を大きくすることが考えられるが、この場合、低周波振動に対してのみならず高周波振動に対しても一律に大きな摩擦力が発生するようになる。そのため、脱水定常時において水槽に発生する高周波振動がそのまま筐体に伝わってしまうこととなり、筐体の振動量や振動音が大きくなるという不具合がある。   Here, in order to achieve a larger damping force in the friction type vibration isolator, it is conceivable to increase the frictional force generated in the rod, but in this case, not only the low frequency vibration but also the high frequency vibration is considered. Even against this, a large friction force is generated uniformly. Therefore, high-frequency vibration generated in the water tank during steady dehydration is directly transmitted to the housing, and there is a problem that the amount of vibration and vibration noise of the housing increase.

また、摩擦式の防振装置に特許文献２のような構成を適用し、ロッドに対して摩擦部材を軸方向に移動可能にしたとしても、摩擦部材がロッドに接触していることから、脱水定常時においてロッドの往復動に摩擦力が発生してしまい、ドラム式洗濯機の防振装置に望まれる上記特性を満たすことができない。   Further, even if the configuration as in Patent Document 2 is applied to the friction type vibration isolator, and the friction member is movable in the axial direction with respect to the rod, the friction member is in contact with the rod. A frictional force is generated in the reciprocating motion of the rod at a constant time, and the above-mentioned characteristics desired for the vibration isolator of the drum type washing machine cannot be satisfied.

本発明は、上記した事情に鑑みてなされたものであり、その目的は、脱水の起動性能を向上することができ、且つ、脱水定常時における筐体の振動量や振動音を小さくすることができるドラム式洗濯機を提供することにある。   The present invention has been made in view of the circumstances described above, and an object of the present invention is to improve the dewatering start-up performance, and to reduce the vibration amount and vibration sound of the housing at the time of steady dehydration. An object of the present invention is to provide a drum type washing machine that can be used.

本発明は、ドラムを収容する水槽と筐体との間において当該水槽を防振支持する防振装置を備えたドラム式洗濯機において、前記防振装置は、筒状をなし内部が空気で満たされたシリンダと、このシリンダ内を軸方向に沿って相対的に往復動するロッドと、このロッドの外周面との間に隙間を有して配置され、前記シリンダの内周面を摺動する環状の摩擦摺動部材と、前記ロッドに設けられ、前記摩擦摺動部材を挟んで当該ロッドの軸方向に沿って所定間隔を有するとともに前記摩擦摺動部材の内径よりも径大に形成された一対の当接部とを備えたことに特徴を有する。   The present invention relates to a drum type washing machine provided with a vibration isolating device that provides vibration isolation support between a water tank containing a drum and a housing. The vibration isolating apparatus has a cylindrical shape and is filled with air. The cylinder is disposed with a gap between the cylinder, the rod that reciprocally moves in the cylinder along the axial direction, and the outer peripheral surface of the rod, and slides on the inner peripheral surface of the cylinder. An annular frictional sliding member, provided on the rod, having a predetermined interval along the axial direction of the rod with the frictional sliding member interposed therebetween and formed larger in diameter than the inner diameter of the frictional sliding member It is characterized by having a pair of contact portions.

本発明のドラム式洗濯機によれば、脱水起動時において水槽に低周波振動が発生し、シリンダに対するロッドの振幅が大きくなると、当接部が摩擦摺動部材に当接し、摩擦摺動部材がロッドとともに往復動してシリンダの内周面を摺動するようになる。これにより、ロッドの往復動に大きな摩擦力が発生するので、脱水起動時の水槽の振動を極力抑えることができ、脱水の起動性能を向上することができる。   According to the drum type washing machine of the present invention, when the low-frequency vibration is generated in the water tank at the time of dehydration activation, and the amplitude of the rod with respect to the cylinder increases, the contact portion contacts the friction sliding member, and the friction sliding member It reciprocates with the rod and slides on the inner peripheral surface of the cylinder. Thereby, since a large frictional force is generated in the reciprocating motion of the rod, the vibration of the water tank at the time of dehydration activation can be suppressed as much as possible, and the dehydration activation performance can be improved.

また、脱水定常時において水槽に高周波振動が発生し、シリンダに対するロッドの振幅が小さくなると、当接部が摩擦摺動部材に当接しなくなり、ロッドのみが往復動するようになる。この場合、シリンダの内部が空気で満たされており、しかも、ロッドの外周面と摩擦摺動部材との間に隙間が設けられているため、ロッドは殆んど抵抗のない状態で往復動し、ロッドの往復動に摩擦力が発生することはない。これにより、脱水定常時の水槽の振動を筐体に伝わり難くすることができ、筐体の振動量や振動音を極力小さくすることができる。   Further, when high-frequency vibration is generated in the water tank during steady dehydration and the amplitude of the rod with respect to the cylinder becomes small, the contact portion does not contact the friction sliding member, and only the rod reciprocates. In this case, the inside of the cylinder is filled with air, and a gap is provided between the outer peripheral surface of the rod and the frictional sliding member, so that the rod reciprocates with little resistance. No frictional force is generated in the reciprocating motion of the rod. Thereby, it is possible to make it difficult for vibration of the water tank during steady dehydration to be transmitted to the housing, and to reduce the amount of vibration and vibration sound of the housing as much as possible.

（第１の実施形態）
以下、本発明の第１の実施形態について図１および図２を参照して説明する。
図２は、ドラム式洗濯機１の縦断側面図を示している。ドラム式洗濯機１の外殻をなす筐体２の前面部（図２では左側）の中央部には、洗濯物出入口３および当該洗濯物出入口３を開閉する扉４が設けられており、筐体２の前面上部には、操作パネル５が設けられている。この操作パネル５は、使用者がドラム式洗濯機１の運転に係る各種の操作をするためのもので、電源スイッチ、スタートスイッチ、各種選択スイッチなど、多数の操作スイッチ（何れも図示せず）を備えている。 (First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 2 shows a longitudinal side view of the drum type washing machine 1. A laundry doorway 3 and a door 4 for opening and closing the laundry doorway 3 are provided at the center of the front surface (left side in FIG. 2) of the housing 2 that forms the outer shell of the drum-type washing machine 1. An operation panel 5 is provided at the upper front of the body 2. This operation panel 5 is for the user to perform various operations related to the operation of the drum-type washing machine 1, and includes a number of operation switches such as a power switch, a start switch, and various selection switches (all not shown). It has.

筐体２の内部には有底円筒形をなす水槽６が配設されている。この水槽６は、その軸方向が前後方向（図２では左右方向）で、前上がり（図２では左上がり）の傾斜状となる斜め横軸状に配置され、左右一対（図２では一方のみ図示）のサスペンション７（防振装置に相当）により防振支持される構成となっている。このサスペンション７の具体的構成については後述する。   A water tank 6 having a bottomed cylindrical shape is disposed inside the housing 2. The aquarium 6 is arranged in an oblique horizontal axis shape in which the axial direction is the front-rear direction (left-right direction in FIG. 2) and the front is rising (upward to the left in FIG. 2). The suspension is supported by a suspension 7 (corresponding to a vibration isolator). A specific configuration of the suspension 7 will be described later.

水槽６の内部には、洗濯物を収容するドラム８が配設されている。このドラム８も有底円筒形をなすものであり、水槽６と同軸状（軸方向が前後方向で、前上がりの傾斜状となる斜め横軸状）に配設されている。このドラム８は、その胴部のほぼ全域に、通水孔であり通風孔でもある小孔９（一部のみ図示）を多数有しており、洗濯槽、脱水槽および乾燥槽として機能する。水槽６およびドラム８は、それぞれ前面部に洗濯物出し入れ用の開口部１０，１１を有しており、そのうち水槽６の開口部１０は、ベロー１２によって筐体２の洗濯物出入口３に水密に連ねられ、ドラム８の開口部１１は水槽６の開口部１０に臨んでいる。   Inside the aquarium 6, a drum 8 for storing laundry is disposed. The drum 8 also has a bottomed cylindrical shape, and is arranged coaxially with the water tank 6 (an oblique horizontal axis in which the axial direction is the front-rear direction and the front is inclined upward). The drum 8 has a large number of small holes 9 (only a part of which are shown in the figure) that are both water holes and ventilation holes in almost the entire region of the drum portion, and functions as a washing tub, a dewatering tub, and a drying tub. The aquarium 6 and the drum 8 each have openings 10 and 11 for putting in and out the laundry on the front part, and the opening 10 of the aquarium 6 is watertightly connected to the laundry entrance 3 of the housing 2 by the bellows 12. The opening 11 of the drum 8 faces the opening 10 of the water tank 6.

水槽６の背面部には、ドラム８を回転駆動するモータ１３が配設されている。このモータ１３は、この場合、アウターロータ形のＤＣブラシレスモータであり、当該モータ１３によりドラム８が直接回転駆動される構成となっている。また、水槽６の下面部には、排水弁１４を介して排水ホース１５が接続されており、水槽６内、ひいてはドラム８内の洗濯水が、これらを通して排出されるようになっている。   A motor 13 that rotationally drives the drum 8 is disposed on the back surface of the water tank 6. In this case, the motor 13 is an outer rotor type DC brushless motor, and the drum 8 is directly rotated by the motor 13. Further, a drain hose 15 is connected to the lower surface of the water tank 6 via a drain valve 14 so that washing water in the water tank 6 and thus in the drum 8 is discharged through these.

次に、前述したサスペンション７の具体的構成を、図１を参照しながら説明する。
サスペンション７は筒状をなし内部が空気で満たされたシリンダ１６を有しており、このシリンダ１６の一端部（図１では上端部）には取付部材１６Ａが設けられている。この取付部材１６Ａは、防振材１６ａおよびナット１６ｂ（図２参照）により水槽６の側板６ａに連結されており、シリンダ１６が水槽６とともに振動するようになっている。一方、シリンダ１６の他端部（図１では下端部）の外周には、シリンダ側バネ受け部１７が設けられており、この他端部の内部にはロッドガイド１８が配設されている。このロッドガイド１８は、中央部に軸方向に貫通したロッド挿入孔１８ａを有しており、例えば焼結含油メタル（いわゆる軸受合金）とメタル圧入用金属（いわゆる裏金）とから構成されている。このロッドガイド１８は、当該ロッドガイド１８の他端側（図１では下側）がシリンダ１６のかしめ部１９に当接することによって、当該シリンダ１６内に位置決めされている。 Next, a specific configuration of the suspension 7 described above will be described with reference to FIG.
The suspension 7 has a cylinder 16 that has a cylindrical shape and is filled with air. An attachment member 16A is provided at one end of the cylinder 16 (upper end in FIG. 1). The mounting member 16A is connected to the side plate 6a of the water tank 6 by a vibration isolator 16a and a nut 16b (see FIG. 2), and the cylinder 16 vibrates together with the water tank 6. On the other hand, a cylinder-side spring receiving portion 17 is provided on the outer periphery of the other end portion (lower end portion in FIG. 1) of the cylinder 16, and a rod guide 18 is disposed inside the other end portion. This rod guide 18 has a rod insertion hole 18a penetrating in the axial direction at the center, and is composed of, for example, a sintered oil-impregnated metal (so-called bearing alloy) and a metal press-fitting metal (so-called back metal). The rod guide 18 is positioned in the cylinder 16 by the other end side (the lower side in FIG. 1) of the rod guide 18 coming into contact with the caulking portion 19 of the cylinder 16.

ロッドガイド１８のロッド挿入孔１８ａには、ロッド２０の一端側（図１では上端側）が挿通されており、当該ロッド２０はシリンダ１６内を軸方向に沿って往復動するようになっている。ロッド２０の他端側は、防振材２０ａおよびナット２０ｂ（図２参照）により台板２ａに連結されている。また、ロッド２０の他端側の外周には、ロッド側バネ受け部２１（図２参照）が、上記したシリンダ側バネ受け部１７と軸方向に対向するように設けられている。そして、このロッド側バネ受け部２１とシリンダ側バネ受け部１７との間には、コイル状のバネ２２がシリンダ１６およびロッド２０の軸方向に伸縮可能に配設されている。   One end side (the upper end side in FIG. 1) of the rod 20 is inserted into the rod insertion hole 18a of the rod guide 18, and the rod 20 reciprocates in the cylinder 16 along the axial direction. . The other end of the rod 20 is connected to the base plate 2a by a vibration isolator 20a and a nut 20b (see FIG. 2). Further, on the outer periphery on the other end side of the rod 20, a rod-side spring receiving portion 21 (see FIG. 2) is provided so as to face the cylinder-side spring receiving portion 17 in the axial direction. A coiled spring 22 is disposed between the rod side spring receiving portion 21 and the cylinder side spring receiving portion 17 so as to be extendable and contractable in the axial direction of the cylinder 16 and the rod 20.

上記したロッド２０の上端側は、下端側よりも軸径が小さく設けられた径小部２３となっており、この径小部２３には、環状の摩擦摺動部材２４が配置されている。この摩擦摺動部材２４は、摺動部本体２５と、摩擦摺動部材２４の内周部を構成する筒状の摩擦摺動管２６とからなる。摺動部本体２５は、合成ゴム（例えば、ＥＰＤＭ：エチレンプロピレンジエンゴム、ＣＲゴム：クロロプレンラバーなど）から構成されており、その外周面２５ａがシリンダ１６の内周面１６ｃを摺動するようになっている。摩擦摺動管２６は、摺動部本体２５よりも硬い材料（例えば、ＰＯＭ：ポリオキシメチレンなどの合成樹脂）から構成されており、その内周面２６ａが径小部２３の外周面２３ａとの間に隙間を有した状態となっている。   The upper end side of the rod 20 is a small-diameter portion 23 having a smaller shaft diameter than the lower end side, and an annular friction sliding member 24 is disposed in the small-diameter portion 23. The friction sliding member 24 includes a sliding portion main body 25 and a cylindrical friction sliding tube 26 that constitutes the inner peripheral portion of the friction sliding member 24. The sliding part body 25 is made of synthetic rubber (for example, EPDM: ethylene propylene diene rubber, CR rubber: chloroprene rubber, etc.), and its outer peripheral surface 25 a slides on the inner peripheral surface 16 c of the cylinder 16. It has become. The frictional sliding tube 26 is made of a material harder than the sliding part main body 25 (for example, POM: synthetic resin such as polyoxymethylene), and an inner peripheral surface 26 a thereof is an outer peripheral surface 23 a of the small diameter part 23. It is in the state which had the clearance gap between.

径小部２３の上端には、摩擦摺動部材２４（摩擦摺動管２６）の内径よりも径大なリング部材２７が溶接により固着されており、径小部２３の下端には、摩擦摺動部材２４（摩擦摺動管２６）の内径よりも径大な段部２８が形成されている。これらリング部材２７と段部２８により、摩擦摺動部材２４を挟んでロッド２０の軸方向に沿って所定間隔Ａを有する一対の当接部が構成されている。   A ring member 27 having a diameter larger than the inner diameter of the friction sliding member 24 (friction sliding tube 26) is fixed to the upper end of the small diameter portion 23 by welding. A step portion 28 having a diameter larger than the inner diameter of the moving member 24 (friction sliding tube 26) is formed. The ring member 27 and the step portion 28 constitute a pair of abutting portions having a predetermined interval A along the axial direction of the rod 20 with the friction sliding member 24 interposed therebetween.

次に、上記構成の作用について説明する。
ドラム８の回転に伴って水槽６に振動が発生すると、これと連動してシリンダ１６もバネ２２の伸縮を伴いながら軸方向に往復動（上下方向に振動）し、シリンダ１６内をロッド２０が相対的に往復動するようになる。 Next, the operation of the above configuration will be described.
When vibration is generated in the water tank 6 as the drum 8 rotates, the cylinder 16 also reciprocates in the axial direction (vibrates in the vertical direction) with expansion and contraction of the spring 22, and the rod 20 moves in the cylinder 16. Reciprocate relatively.

ここで、脱水起動時においては、ドラム８の回転速度が遅いことから、水槽６には低周波振動が発生する。この低周波振動により、シリンダ１６に対するロッド２０の振幅が大きくなると、リング部材２７および段部２８が摩擦摺動部材２４の一部をなす摩擦摺動管２６に当接し、摩擦摺動部材２４（摺動部本体２５および摩擦摺動管２６）がロッド２０とともに往復動してシリンダ１６の内周面１６ｃを摺動するようになる。これにより、ロッド２０の往復動に大きな摩擦力が発生する。   Here, at the time of dehydration start-up, since the rotational speed of the drum 8 is slow, low frequency vibration is generated in the water tank 6. When the amplitude of the rod 20 with respect to the cylinder 16 increases due to the low frequency vibration, the ring member 27 and the stepped portion 28 come into contact with the friction sliding tube 26 forming a part of the friction sliding member 24, and the friction sliding member 24 ( The sliding portion main body 25 and the frictional sliding tube 26) reciprocate together with the rod 20 to slide on the inner peripheral surface 16 c of the cylinder 16. Thereby, a large frictional force is generated in the reciprocating motion of the rod 20.

そして、脱水定常時に移行すると、ドラム８の回転速度が速くなることから、水槽６には高周波振動が発生する。この高周波振動により、シリンダ１６に対するロッド２０の振幅が小さくなると、リング部材２７および段部２８が摩擦摺動管２６（摩擦摺動部材２４）に当接しなくなり、ロッド２０のみが往復動するようになる。この場合、シリンダ１６の内部が空気で満たされており、しかも、径小部２３の外周面２３ａと摩擦摺動管２６との間に隙間が設けられているため、ロッド２０は殆んど抵抗のない状態で往復動する。これにより、ロッド２０の往復動に摩擦力が発生することはない。   And if it transfers to the time of dehydration steady, since the rotational speed of the drum 8 will become high, the high frequency vibration generate | occur | produces in the water tank 6. FIG. When the amplitude of the rod 20 relative to the cylinder 16 is reduced by this high frequency vibration, the ring member 27 and the stepped portion 28 do not contact the friction sliding tube 26 (friction sliding member 24), and only the rod 20 reciprocates. Become. In this case, since the inside of the cylinder 16 is filled with air and a gap is provided between the outer peripheral surface 23a of the small diameter portion 23 and the frictional sliding tube 26, the rod 20 is almost resistant. Reciprocates in the absence of Thereby, a frictional force is not generated in the reciprocating motion of the rod 20.

以上に説明したように本実施形態によれば、脱水起動時の低周波振動に対しては、摩擦摺動部材２４（摺動部本体２５および摩擦摺動管２６）がロッド２０とともに往復動してシリンダ１６の内周面１６ｃを摺動し、ロッド２０の往復動に大きな摩擦力が発生する。これにより、脱水起動時の水槽６の振動を極力抑えることができ、脱水の起動性能を向上することができる。一方、脱水定常時の高周波振動に対しては、ロッド２０のみが殆んど抵抗のない状態で往復動し、ロッド２０の往復動に摩擦力が発生することはない。これにより、脱水定常時の水槽６の振動を筐体２に伝わり難くすることができ、筐体２の振動量や振動音を極力小さくすることができる。   As described above, according to the present embodiment, the friction sliding member 24 (the sliding portion main body 25 and the friction sliding tube 26) reciprocates together with the rod 20 with respect to the low-frequency vibration at the start of dehydration. Thus, a large frictional force is generated in the reciprocating motion of the rod 20 by sliding on the inner peripheral surface 16 c of the cylinder 16. Thereby, the vibration of the water tank 6 at the time of dehydration activation can be suppressed as much as possible, and the dehydration activation performance can be improved. On the other hand, with respect to the high-frequency vibration during the dehydration steady state, only the rod 20 reciprocates with almost no resistance, and no frictional force is generated in the reciprocating motion of the rod 20. Thereby, the vibration of the water tank 6 at the time of dehydration steady can be made difficult to transmit to the housing | casing 2, and the vibration amount and vibration sound of the housing | casing 2 can be made as small as possible.

また、摩擦摺動部材２４は、その内周部に、当該摩擦摺動部材２４よりも硬い筒状の摩擦摺動管２６を有する構成としたので、シリンダ１６の内周面１６ｃを摺動する摺動部本体２５を、その内周面から摩擦摺動管２６により支えることができ、摺動部本体２５が歪んで変形してしまうことを防止することができる。   Further, since the friction sliding member 24 has a cylindrical friction sliding tube 26 that is harder than the friction sliding member 24 on the inner peripheral portion thereof, the friction sliding member 24 slides on the inner peripheral surface 16 c of the cylinder 16. The sliding part main body 25 can be supported by the frictional sliding tube 26 from the inner peripheral surface thereof, and the sliding part main body 25 can be prevented from being distorted and deformed.

（第２の実施形態）
次に、本発明の第２の実施形態について図３を参照して説明する。なお、上述した第１の実施形態と同一の部分については説明を省略し、異なる部分についてのみ説明する。 (Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. In addition, description is abbreviate | omitted about the part same as 1st Embodiment mentioned above, and only a different part is demonstrated.

本実施形態のサスペンション３０（防振装置に相当）において、摩擦摺動部材３１は、一部材から構成されており、その外周面３１ａがシリンダ１６の内周面１６ｃを摺動するようになっているとともに、その内周面３１ｂが径小部２３の外周面２３ａとの間に隙間を有した状態となっている。また、リング部材２７と段部２８により、摩擦摺動部材３１を挟んでロッド２０の軸方向に沿って所定間隔Ｂを有する一対の当接部が構成されている。   In the suspension 30 (corresponding to the vibration isolator) of the present embodiment, the friction sliding member 31 is composed of one member, and the outer peripheral surface 31a slides on the inner peripheral surface 16c of the cylinder 16. In addition, the inner peripheral surface 31b is in a state having a gap with the outer peripheral surface 23a of the small diameter portion 23. Further, the ring member 27 and the stepped portion 28 constitute a pair of abutting portions having a predetermined interval B along the axial direction of the rod 20 with the friction sliding member 31 interposed therebetween.

この構成によれば、脱水起動時において水槽６に低周波振動が発生し、シリンダ１６に対するロッド２０の振幅が大きくなると、リング部材２７および段部２８が摩擦摺動部材３１に当接し、摩擦摺動部材３１がロッド２０とともに往復動してシリンダ１６の内周面１６ｃを摺動するようになる。これにより、ロッド２０の往復動に大きな摩擦力が発生するので、脱水起動時の水槽６の振動を極力抑えることができ、脱水の起動性能を向上することができる。   According to this configuration, when the low-frequency vibration is generated in the water tank 6 at the time of dehydration start and the amplitude of the rod 20 with respect to the cylinder 16 increases, the ring member 27 and the stepped portion 28 come into contact with the friction sliding member 31, and the friction sliding The moving member 31 reciprocates with the rod 20 to slide on the inner peripheral surface 16c of the cylinder 16. Thereby, since a large frictional force is generated in the reciprocating motion of the rod 20, the vibration of the water tank 6 at the start of dehydration can be suppressed as much as possible, and the dewatering start performance can be improved.

また、脱水定常時において水槽６に高周波振動が発生し、シリンダ１６に対するロッド２０の振幅が小さくなると、リング部材２７および段部２８が摩擦摺動部材３１に当接しなくなり、ロッド２０のみが往復動するようになる。この場合、シリンダ１６の内部が空気で満たされており、しかも、径小部２３の外周面２３ａと摩擦摺動部材３１との間に隙間が設けられているため、ロッド２０は殆んど抵抗のない状態で往復動し、ロッド２０の往復動に摩擦力が発生することはない。これにより、脱水定常時の水槽６の振動を筐体２に伝わり難くすることができ、筐体２の振動量や振動音を極力小さくすることができる。   Further, when high-frequency vibration is generated in the water tank 6 during steady dehydration and the amplitude of the rod 20 with respect to the cylinder 16 is reduced, the ring member 27 and the stepped portion 28 do not come into contact with the friction sliding member 31, and only the rod 20 reciprocates. To come. In this case, since the inside of the cylinder 16 is filled with air and a gap is provided between the outer peripheral surface 23a of the small diameter portion 23 and the friction sliding member 31, the rod 20 is almost resistant. Reciprocating in the absence of friction, and no frictional force is generated in the reciprocating motion of the rod 20. Thereby, the vibration of the water tank 6 at the time of dehydration steady can be made difficult to transmit to the housing | casing 2, and the vibration amount and vibration sound of the housing | casing 2 can be made as small as possible.

（第３の実施形態）
次に、本発明の第３の実施形態について図４を参照して説明する。なお、上述した第１の実施形態と同一の部分については説明を省略し、異なる部分についてのみ説明する。
図４に示すサスペンション４０（防振装置に相当）は、上述した第１の実施形態に示したものにおいて、当接部を構成するリング部材２７および段部２８の摩擦摺動部材２４に対向する部分に、合成ゴム、樹脂などの材料からなる緩衝部材４１を設けたものである。 (Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. In addition, description is abbreviate | omitted about the part same as 1st Embodiment mentioned above, and only a different part is demonstrated.
A suspension 40 (corresponding to a vibration isolator) shown in FIG. 4 is opposed to the ring member 27 constituting the contact portion and the friction sliding member 24 of the step portion 28 in the one shown in the first embodiment. The part is provided with a buffer member 41 made of a material such as synthetic rubber or resin.

このような構成によれば、リング部材２７および段部２８が摩擦摺動部材２４（特に摩擦摺動管２６の上端および下端）に当接したときの衝突音を低減することができる。また、リング部材２７および段部２８が摩擦摺動部材２４に当接することによるこれらの損傷を防止することができる。   According to such a configuration, it is possible to reduce a collision sound when the ring member 27 and the stepped portion 28 come into contact with the friction sliding member 24 (particularly, the upper end and the lower end of the friction sliding tube 26). Further, the damage caused by the ring member 27 and the stepped portion 28 coming into contact with the friction sliding member 24 can be prevented.

（第４の実施形態）
次に、本発明の第４の実施形態について図５を参照して説明する。なお、上述した第２の実施形態と同一の部分については説明を省略し、異なる部分についてのみ説明する。
図５に示すサスペンション５０（防振装置に相当）は、上述した第２の実施形態に示したものにおいて、当接部を構成するリング部材２７および段部２８の摩擦摺動部材３１に対向する部分に、合成ゴム、樹脂などの材料からなる緩衝部材５１を設けたものである。 (Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG. In addition, description is abbreviate | omitted about the part same as 2nd Embodiment mentioned above, and only a different part is demonstrated.
The suspension 50 (corresponding to the vibration isolator) shown in FIG. 5 is opposed to the ring member 27 constituting the contact portion and the friction sliding member 31 of the step portion 28 in the one shown in the second embodiment. The part is provided with a buffer member 51 made of a material such as synthetic rubber or resin.

このような構成によれば、リング部材２７および段部２８が摩擦摺動部材３１に当接したときの衝突音を低減することができる。また、リング部材２７および段部２８が摩擦摺動部材３１に当接することによるこれらの損傷を防止することができる。   According to such a configuration, it is possible to reduce a collision sound when the ring member 27 and the stepped portion 28 come into contact with the friction sliding member 31. Further, the damage caused by the ring member 27 and the stepped portion 28 coming into contact with the friction sliding member 31 can be prevented.

（第５の実施形態）
次に、本発明の第５の実施形態について図６を参照して説明する。なお、上述した第１の実施形態と同一の部分については説明を省略し、異なる部分についてのみ説明する。 (Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIG. In addition, description is abbreviate | omitted about the part same as 1st Embodiment mentioned above, and only a different part is demonstrated.

本実施形態のサスペンション６０（防振装置に相当）において、ロッド２０の径小部２３には、当該ロッド２０の軸方向に沿う２箇所において、それぞれ環状の第１の摩擦摺動部材６１および第２の摩擦摺動部材６２が配置されている。これら第１の摩擦摺動部材６１および第２の摩擦摺動部材６２の外周面６１ａ，６２ａは、それぞれシリンダ１６の内周面１６ｃを摺動するようになっており、内周面６１ｂ，６２ｂは、それぞれ径小部２３の外周面２３ａとの間に隙間を有した状態となっている。   In the suspension 60 (corresponding to the vibration isolator) of the present embodiment, the small diameter portion 23 of the rod 20 has an annular first friction sliding member 61 and a second one at two locations along the axial direction of the rod 20, respectively. Two friction sliding members 62 are arranged. The outer peripheral surfaces 61a and 62a of the first friction sliding member 61 and the second friction sliding member 62 slide on the inner peripheral surface 16c of the cylinder 16, respectively, and the inner peripheral surfaces 61b and 62b. Are in a state of having a gap with the outer peripheral surface 23a of the small diameter portion 23.

径小部２３において第１の摩擦摺動部材６１と第２の摩擦摺動部材６２との間の部分には、第１の摩擦摺動部材６１および第２の摩擦摺動部材６２の内径よりも径大な第１のリング部材６３が溶接により固着されており、径小部２３の上端には、第２の摩擦摺動部材６２の内径よりも径大な第２のリング部材６４が溶接により固着されている。また、径小部２３の下端には、第１の摩擦摺動部材６１の内径よりも径大な段部６５が形成されている。これら第１のリング部材６３の下面と段部６５により、第１の摩擦摺動部材６１を挟んでロッド２０の軸方向に沿って第１の所定間隔Ｃを有する一対の第１の当接部が構成され、第１のリング部材６３の上面と第２のリング部材６４の下面により、第２の摩擦摺動部材６２を挟んでロッド２０の軸方向に沿って第２の所定間隔Ｄを有する一対の第２の当接部が構成されている。   In the small diameter portion 23, the portion between the first friction sliding member 61 and the second friction sliding member 62 has an inner diameter of the first friction sliding member 61 and the second friction sliding member 62. A first ring member 63 having a larger diameter is fixed by welding, and a second ring member 64 having a diameter larger than the inner diameter of the second friction sliding member 62 is welded to the upper end of the small diameter portion 23. It is fixed by. Further, a step portion 65 having a diameter larger than the inner diameter of the first friction sliding member 61 is formed at the lower end of the small diameter portion 23. A pair of first contact portions having a first predetermined distance C along the axial direction of the rod 20 with the first friction sliding member 61 interposed between the lower surface of the first ring member 63 and the step portion 65. And has a second predetermined distance D along the axial direction of the rod 20 with the second friction sliding member 62 sandwiched between the upper surface of the first ring member 63 and the lower surface of the second ring member 64. A pair of second contact portions is configured.

この場合、第１の所定間隔Ｃから第１の摩擦摺動部材６１の軸方向の厚さＥを減算した値が、第２の所定間隔Ｄから第２の摩擦摺動部材６２の軸方向の厚さＦを減算した値よりも大きくなるように構成されている（Ｃ−Ｅ＞Ｄ−Ｆ）。   In this case, the value obtained by subtracting the axial thickness E of the first friction sliding member 61 from the first predetermined interval C is the axial direction of the second friction sliding member 62 from the second predetermined interval D. It is comprised so that it may become larger than the value which subtracted thickness F (CE> DF).

次に、上記構成の作用について説明する。
脱水起動時において水槽６に低周波振動が発生し、シリンダ１６に対するロッド２０の振幅が大きくなると、第１のリング部材６３および段部６５が第１の摩擦摺動部材６１に当接し、第１の摩擦摺動部材６１がロッド２０とともに往復動してシリンダ１６の内周面１６ｃを摺動するようになる。このとき、第１の所定間隔Ｃから第１の摩擦摺動部材６１の軸方向の厚さＥを減算した値が、第２の所定間隔Ｄから第２の摩擦摺動部材６２の軸方向の厚さＦを減算した値よりも大きいことから、第１のリング部材６３および第２のリング部材６４も第２の摩擦摺動部材６２に当接し、当該第２の摩擦摺動部材６２もロッド２０とともに往復動してシリンダ１６の内周面１６ｃを摺動する。これにより、ロッド２０の往復動に大きな摩擦力が発生する。 Next, the operation of the above configuration will be described.
When the low-frequency vibration is generated in the water tank 6 at the time of dehydration activation and the amplitude of the rod 20 with respect to the cylinder 16 increases, the first ring member 63 and the stepped portion 65 come into contact with the first friction sliding member 61, and the first The friction sliding member 61 reciprocates together with the rod 20 and slides on the inner peripheral surface 16 c of the cylinder 16. At this time, the value obtained by subtracting the axial thickness E of the first friction sliding member 61 from the first predetermined interval C is the axial direction of the second friction sliding member 62 from the second predetermined interval D. Since the thickness F is larger than the value obtained by subtracting the thickness F, the first ring member 63 and the second ring member 64 are also in contact with the second friction sliding member 62, and the second friction sliding member 62 is also a rod. 20 reciprocates together with the inner peripheral surface 16 c of the cylinder 16. Thereby, a large frictional force is generated in the reciprocating motion of the rod 20.

脱水起動時から脱水定常時に移行する過程において、シリンダ１６に対するロッド２０の振幅が小さくなっていくと、第１のリング部材６３および段部６５が第１の摩擦摺動部材６１に当接しなくなり、第２の摩擦摺動部材６２のみがロッド２０とともに往復動してシリンダ１６の内周面１６ｃを摺動するようになる。これにより、ロッド２０の往復動に上記の脱水起動時より小さな摩擦力が発生する。   When the amplitude of the rod 20 with respect to the cylinder 16 is reduced in the process of shifting from the start of dehydration to the steady state of dehydration, the first ring member 63 and the step portion 65 do not contact the first friction sliding member 61. Only the second friction sliding member 62 reciprocates together with the rod 20 to slide on the inner peripheral surface 16 c of the cylinder 16. As a result, a smaller frictional force is generated in the reciprocating motion of the rod 20 than when the above dehydration is started.

そして、脱水定常時に移行して水槽６に高周波振動が発生し、シリンダ１６に対するロッド２０の振幅がさらに小さくなると、第１のリング部材６３および第２のリング部材６４が第２の摩擦摺動部材６２に当接しなくなり、ロッド２０のみが往復動するようになる。この場合、シリンダ１６の内部が空気で満たされており、しかも、径小部２３の外周面２３ａと第１の摩擦摺動部材６１および第２の摩擦摺動部材６２との間に隙間が設けられているため、ロッド２０は殆んど抵抗のない状態で往復動する。これにより、ロッド２０の往復動に摩擦力が発生することはない。   When the dehydration steady state is reached and high-frequency vibration is generated in the water tank 6 and the amplitude of the rod 20 with respect to the cylinder 16 is further reduced, the first ring member 63 and the second ring member 64 become the second friction sliding member. No longer comes into contact with 62, and only the rod 20 reciprocates. In this case, the inside of the cylinder 16 is filled with air, and a gap is provided between the outer peripheral surface 23a of the small diameter portion 23 and the first friction sliding member 61 and the second friction sliding member 62. Therefore, the rod 20 reciprocates with almost no resistance. Thereby, a frictional force is not generated in the reciprocating motion of the rod 20.

以上に説明したように本実施形態によれば、脱水起動時の低周波振動に対してはロッド２０の往復動に大きな摩擦力を発生させ、脱水起動時から脱水定常時に移行する過程においてはロッド２０の往復動に脱水起動時より小さな摩擦力を発生させ、脱水定常時の高周波振動に対してはロッド２０の往復動に摩擦力を発生させないようにすることができ、水槽６の振動周波数に応じてサスペンション６０の減衰力を３段階に変化させることができる。   As described above, according to this embodiment, a large frictional force is generated in the reciprocating motion of the rod 20 with respect to the low-frequency vibration at the time of dehydration activation, and the rod is shifted in the process of dehydration activation to the steady state of dehydration. It is possible to generate a smaller frictional force in the reciprocating motion 20 than at the start of dehydration, and to prevent a frictional force from being generated in the reciprocating motion of the rod 20 with respect to high-frequency vibrations during steady dehydration. Accordingly, the damping force of the suspension 60 can be changed in three stages.

（その他の実施形態）
なお、本発明は上述した各実施形態に限定されるものではなく、次のように変形または拡張することができる。 (Other embodiments)
In addition, this invention is not limited to each embodiment mentioned above, It can deform | transform or expand as follows.

上述した第１の実施形態および第３の実施形態において、摩擦摺動管２６が摺動部本体２５に対して軸方向に沿って往復動可能に構成してもよい。この構成によれば、低周波振動により摩擦摺動部材２４の摺動部本体２５および摩擦摺動管２６がロッド２０とともに往復動する状態と、高周波振動によりロッド２０のみが往復動する状態との間に、摩擦摺動部材２４の摩擦摺動管２６のみがロッド２０とともに往復動する状態をつくることができ、水槽６の振動周波数に応じて３段階の減衰力を実現することができる。   In the first and third embodiments described above, the frictional sliding tube 26 may be configured to reciprocate along the axial direction with respect to the sliding portion main body 25. According to this configuration, the sliding portion main body 25 and the friction sliding tube 26 of the friction sliding member 24 reciprocate together with the rod 20 due to low frequency vibration, and the state where only the rod 20 reciprocates due to high frequency vibration. In the meantime, only the friction sliding tube 26 of the friction sliding member 24 can reciprocate together with the rod 20, and a three-stage damping force can be realized according to the vibration frequency of the water tank 6.

上述した第５の実施形態において、摩擦摺動管および緩衝部材を設ける構成としてもよい。また、摩擦摺動部材および当接部は２つに限られるものではなく、さらに複数設けてもよい。
一対の当接部の所定間隔や摩擦摺動部材の厚さは、適宜変更して実施することができる。 In the fifth embodiment described above, a friction sliding tube and a buffer member may be provided. Further, the number of friction sliding members and contact portions is not limited to two, and a plurality of friction sliding members and contact portions may be provided.
The predetermined interval between the pair of contact portions and the thickness of the frictional sliding member can be changed as appropriate.

本発明の第１の実施形態を示すものであり、サスペンションの内部構成を示す縦断側面図The 1st Embodiment of this invention is a vertical side view which shows the internal structure of a suspension. ドラム式洗濯機の内部構成を示す縦断側面図Longitudinal side view showing the internal structure of the drum type washing machine 本発明の第２の実施形態を示す図１相当図FIG. 1 equivalent diagram showing a second embodiment of the present invention 本発明の第３の実施形態を示す図１相当図FIG. 1 equivalent view showing a third embodiment of the present invention 本発明の第４の実施形態を示す図１相当図FIG. 1 equivalent view showing a fourth embodiment of the present invention 本発明の第５の実施形態を示す図１相当図FIG. 1 equivalent view showing a fifth embodiment of the present invention

符号の説明Explanation of symbols

図面中、１はドラム式洗濯機、２は筐体、６は水槽、７，３０，４０，５０，６０はサスペンション（防振装置）、８はドラム、１６はシリンダ、２０はロッド、２４，３１は摩擦摺動部材、２６は摩擦摺動管、２７，２８はリング部材および段部（一対の当接部）、４１，５１は緩衝部材、６１は第１の摩擦摺動部材、６２は第２の摩擦摺動部材、６３，６５は第１のリング部材および段部（一対の第１の当接部）、６３，６４は第１のリング部材および第２のリング部材（一対の第２の当接部）を示す。   In the drawings, 1 is a drum type washing machine, 2 is a casing, 6 is a water tank, 7, 30, 40, 50, 60 are suspensions (vibration isolation devices), 8 is a drum, 16 is a cylinder, 20 is a rod, 24, 31 is a friction sliding member, 26 is a friction sliding tube, 27 and 28 are ring members and step portions (a pair of contact portions), 41 and 51 are buffer members, 61 is a first friction sliding member, and 62 is Second friction sliding members 63 and 65 are first ring members and step portions (a pair of first contact portions), and 63 and 64 are first ring members and second ring members (a pair of first contact portions). 2).

Claims (4)

ドラムを収容する水槽と筐体との間において当該水槽を防振支持する防振装置を備えたドラム式洗濯機において、
前記防振装置は、
筒状をなし内部が空気で満たされたシリンダと、
このシリンダ内を軸方向に沿って相対的に往復動するロッドと、
このロッドの外周面との間に隙間を有して配置され、前記シリンダの内周面を摺動する環状の摩擦摺動部材と、
前記ロッドに設けられ、前記摩擦摺動部材を挟んで当該ロッドの軸方向に沿って所定間隔を有するとともに前記摩擦摺動部材の内径よりも径大に形成された一対の当接部とを備えたことを特徴とするドラム式洗濯機。 In a drum-type washing machine provided with a vibration isolating device that provides vibration isolation support for the water tank between the water tank containing the drum and the housing,
The vibration isolator is
A cylinder that is cylindrical and filled with air;
A rod that reciprocally moves along the axial direction in the cylinder;
An annular friction sliding member that is arranged with a gap between the rod and the outer peripheral surface of the rod and slides on the inner peripheral surface of the cylinder;
A pair of abutting portions provided on the rod and having a predetermined interval along the axial direction of the rod with the frictional sliding member interposed therebetween and formed larger in diameter than the inner diameter of the frictional sliding member. A drum-type washing machine characterized by that. 前記摩擦摺動部材は、その内周部に、前記ロッドの外周面との間に隙間を有するとともに前記摩擦摺動部材よりも硬い筒状の摩擦摺動管を有することを特徴とする請求項１に記載のドラム式洗濯機。   The friction sliding member has a cylindrical friction sliding tube having a gap between the inner peripheral portion and the outer peripheral surface of the rod and harder than the friction sliding member. 2. A drum-type washing machine according to 1. 前記当接部の前記摩擦摺動部材に対向する部分に緩衝部材を設けたことを特徴とする請求項１または２に記載のドラム式洗濯機。   The drum type washing machine according to claim 1 or 2, wherein a buffer member is provided in a portion of the contact portion facing the friction sliding member. ドラムを収容する水槽と筐体との間において当該水槽を防振支持する防振装置を備えたドラム式洗濯機において、
前記防振装置は、
筒状をなし内部が空気で満たされたシリンダと、
このシリンダ内を軸方向に沿って相対的に往復動するロッドと、
このロッドの軸方向に沿う２箇所において当該ロッドの外周面との間に隙間を有して配置され、前記シリンダの内周面を摺動するそれぞれ環状の第１の摩擦摺動部材および第２の摩擦摺動部材と、
前記ロッドに設けられ、前記第１の摩擦摺動部材を挟んで当該ロッドの軸方向に沿って第１の所定間隔を有するとともに前記第１の摩擦摺動部材の内径よりも径大に形成された一対の第１の当接部と、
前記ロッドに設けられ、前記第２の摩擦摺動部材を挟んで当該ロッドの軸方向に沿って第２の所定間隔を有するとともに前記第２の摩擦摺動部材の内径よりも径大に形成された一対の第２の当接部とを備え、
前記第１の所定間隔から前記第１の摩擦摺動部材の軸方向の厚さを減算した値が、前記第２の所定間隔から前記第２の摩擦摺動部材の軸方向の厚さを減算した値よりも大きくなるように構成したことを特徴とするドラム式洗濯機。 In a drum-type washing machine provided with a vibration isolating device that provides vibration isolation support for the water tank between the water tank containing the drum and the housing,
The vibration isolator is
A cylinder that is cylindrical and filled with air;
A rod that reciprocally moves along the axial direction in the cylinder;
An annular first friction sliding member and a second sliding member which are arranged at two locations along the axial direction of the rod with a gap between the rod and the outer peripheral surface of the rod and slide on the inner peripheral surface of the cylinder. A friction sliding member of
The rod is provided on the rod, has a first predetermined interval along the axial direction of the rod across the first friction sliding member, and has a diameter larger than the inner diameter of the first friction sliding member. A pair of first contact portions,
The rod is provided on the rod, has a second predetermined interval along the axial direction of the rod across the second friction sliding member, and has a diameter larger than the inner diameter of the second friction sliding member. A pair of second contact portions,
A value obtained by subtracting the axial thickness of the first friction sliding member from the first predetermined interval subtracts the axial thickness of the second friction sliding member from the second predetermined interval. The drum-type washing machine is configured to be larger than the measured value.
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN109306600A (en) * 2017-07-28 2019-02-05 青岛海尔洗衣机有限公司 A kind of washing machine anticollision barrel and washing machine
CN109306601A (en) * 2017-07-28 2019-02-05 青岛海尔洗衣机有限公司 A kind of washing machine horizontal shock-absorbing device and washing machine

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US10407814B2 (en) 2014-03-11 2019-09-10 Lg Electronics Inc. Laundry treatment apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0663291A (en) * 1992-08-20 1994-03-08 Matsushita Electric Ind Co Ltd Drum type washing machine

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
JPH0663291A (en) * 1992-08-20 1994-03-08 Matsushita Electric Ind Co Ltd Drum type washing machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109306600A (en) * 2017-07-28 2019-02-05 青岛海尔洗衣机有限公司 A kind of washing machine anticollision barrel and washing machine
CN109306601A (en) * 2017-07-28 2019-02-05 青岛海尔洗衣机有限公司 A kind of washing machine horizontal shock-absorbing device and washing machine
CN109306600B (en) * 2017-07-28 2022-04-12 青岛海尔洗衣机有限公司 Washing machine anti-collision barrel device and washing machine
CN109306601B (en) * 2017-07-28 2022-04-26 青岛海尔洗衣机有限公司 Washing machine and transverse damping device thereof

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