JP2015223284A - Washing machine - Google Patents

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JP2015223284A
JP2015223284A JP2014109356A JP2014109356A JP2015223284A JP 2015223284 A JP2015223284 A JP 2015223284A JP 2014109356 A JP2014109356 A JP 2014109356A JP 2014109356 A JP2014109356 A JP 2014109356A JP 2015223284 A JP2015223284 A JP 2015223284A
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outer tub
washing machine
main body
tub
support means
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廣瀬　徹
Toru Hirose
徹 廣瀬
中本　重陽
Shigeharu Nakamoto
重陽 中本
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Haier Asia Co Ltd
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Haier Asia Co Ltd
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Priority to JP2014109356A priority Critical patent/JP2015223284A/en
Priority to PCT/CN2014/095879 priority patent/WO2015180478A1/en
Publication of JP2015223284A publication Critical patent/JP2015223284A/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
    • 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
    • F16F15/04—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 elastic means

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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

PROBLEM TO BE SOLVED: To provide a washing machine capable of favorably suppressing vibration of an outer tub, and capable of suppressing damage on the outer tub without reducing the degree of design freedom of the outer tub.SOLUTION: A washing machine which includes elastic support means 5 for elastically supporting an outer tub 3 with respect to a body 2 includes: compression coil springs 54 which are disposed at a plurality of places around a rotary shaft Ra of a washing and dewatering tub 4 between the outer tub 3 and the body 2, in which one end is connected to an outer surface 32a of the outer tub 3 in a state where pressurization is applied by compression, and in which the other end is opposed to an inner surface 21a of the body 2 via a gap; and restriction ropes 62 which allow displacement of the other end in a compression direction and regulate displacement in an extension direction with a state where pressurization is being applied being a reference.

Description

本発明は、洗濯脱水槽が回転する際の振動を抑制可能な洗濯機に関する。   The present invention relates to a washing machine capable of suppressing vibrations when a laundry dewatering tub rotates.

従来、箱状に形成された本体の内部で有底円筒状の外槽を支持し、その外槽の内側で内槽である洗濯脱水槽を回転可能に支持する構成の洗濯機が一般的に知られている（例えば、特許文献１を参照）。   Conventionally, a washing machine having a structure that supports a cylindrical outer tub with a bottom inside a box-shaped main body and rotatably supports a washing / dehydrating tub that is an inner tub inside the outer tub. It is known (see, for example, Patent Document 1).

こうした一般的な洗濯機では、ばねを含んで構成されるサスペンションとこれを吊持する吊棒とを介して、外槽が本体に対し４箇所で弾性的に支持されることで、動作時の振動が抑制される。   In such a general washing machine, the outer tub is elastically supported at four positions with respect to the main body via a suspension including a spring and a suspension rod for suspending the suspension, so that the Vibration is suppressed.

このような構成とする場合、洗濯脱水槽の回転軸回りに外槽が振れ回る振動形態の低次固有振動数が、洗濯脱水槽の回転速度よりも低い領域で現れる。具体的には、洗濯脱水槽の底部にパルセータ（撹拌翼）が設けられ、脱水時には外槽の内部で洗濯脱水槽とパルセータとを一体的に高速回転させる。洗濯脱水槽の回転を開始し、増速する過程において、洗濯脱水槽の回転速度が上記低次固有振動数に合致すると一時的に振動が大きくなる。さらに洗濯脱水槽の回転速度を上げ、低次固有振動数より離れるにつれ振動は小さくなり、設定された回転速度において安定的に動作させることができる。   In the case of such a configuration, a low-order natural frequency of a vibration form in which the outer tub swings around the rotation axis of the laundry dewatering tub appears in a region lower than the rotation speed of the laundry dewatering tub. Specifically, a pulsator (agitating blade) is provided at the bottom of the laundry dewatering tub, and the dewatering tub and pulsator are integrally rotated at high speed inside the outer tub during dehydration. In the process of starting and increasing the rotation of the laundry dewatering tank, the vibration temporarily increases when the rotational speed of the laundry dewatering tank matches the low-order natural frequency. Further, the rotational speed of the washing / dehydrating tub is increased, and the vibration becomes smaller as the washing dehydration tank is moved away from the low-order natural frequency, and can be stably operated at the set rotational speed.

しかしながら、洗濯脱水槽に入れた洗濯物に偏りがあり、回転軸回りのアンバランス量が大きい場合には、外槽の振動が増大し、特に低次固有振動数において外槽が大きく振れ回り本体の内部に接触することも考えられる。さらに、洗濯機全体に大きな騒音・振動が生じることで、洗濯機の設置場所周辺の環境が悪化するとともに洗濯機を構成する部材が損傷するおそれがある。   However, if the laundry put in the laundry dewatering tub is biased and the unbalance amount around the rotation axis is large, the vibration of the outer tub increases, especially at the lower natural frequency, It is also possible to contact the inside of the. Furthermore, large noise and vibration are generated in the entire washing machine, so that the environment around the place where the washing machine is installed may be deteriorated and members constituting the washing machine may be damaged.

上記の不具合を抑制するため、一般的には、外槽と本体との間に一定以上の隙間を持たせて外槽と本体との衝突を減らすことが考えられる。また、過大な振動を検知した際には回転を停止する、あるいは洗濯物の偏りを是正するような制御を行うことも考えられる。   In order to suppress the above problems, it is generally considered that a certain gap or more is provided between the outer tub and the main body to reduce the collision between the outer tub and the main body. In addition, when excessive vibration is detected, it is conceivable to perform control to stop the rotation or correct the unevenness of the laundry.

しかしながら、外槽と本体との間に一定以上の隙間を持たせる場合には、本体に比し外槽を小型化せざるを得ず、本体内部に大きなデッドスペースが必要になる。また、振動対策を制御により行う場合には、振動検知手段及び複雑な制御が必要となり、コストの増大に繋がる。   However, when a certain gap or more is provided between the outer tub and the main body, the outer tub must be downsized as compared with the main body, and a large dead space is required inside the main body. In addition, when vibration countermeasures are performed by control, vibration detection means and complicated control are required, leading to an increase in cost.

そこで、上記の問題を解消するために下記特許文献２記載の技術を用いることが考えられる。特許文献２には、洗濯機の外槽の外側にクリアランスを持たせた状態でリングを同軸に配置し、このリングの外側に板ばねを設ける構成が開示されている（段落００９４，００９５及び図１９Ｄ，１９Ｅ参照）。この板ばねは、予め与圧を与えて変位させた状態でストッパにより保持され、それ以上に変位させてストッパによる規制が無くなった場合には、与圧分を含めた大きなばね力を作用させることができる。   Therefore, in order to solve the above problem, it is conceivable to use the technique described in Patent Document 2 below. Patent Document 2 discloses a configuration in which a ring is arranged coaxially with a clearance provided outside the outer tub of the washing machine, and a leaf spring is provided outside the ring (paragraphs 0094, 0095 and FIG. 19D, 19E). This leaf spring is held by the stopper in a state where it is displaced by applying a pre-pressurization in advance, and when it is displaced further and the restriction by the stopper is lost, a large spring force including the pre-pressurization is applied. Can do.

そのため、特許文献２記載の技術では、洗濯脱水槽の回転速度が低次固有振動数に近づき、外槽が大きく振れ回りリングに接触すると、外槽が上記サスペンションに含まれるばねのみならず、リングに設けられた板ばねによっても弾性的に支持される状態となり、低次固有振動数が変化することで、振動を低減することが可能となる。   Therefore, in the technique described in Patent Document 2, when the rotational speed of the washing / dehydrating tub approaches a low-order natural frequency and the outer tub greatly contacts the swirling ring, not only the spring included in the suspension but also the ring The plate springs provided in the plate are also elastically supported, and the vibration can be reduced by changing the low-order natural frequency.

特開２０１１−２４００４１号公報JP 2011-240041 A 特許第３９８４６３０号公報Japanese Patent No. 3984630

しかしながら、洗濯機の軽量化や製造コストの低減を図るために、外槽は一般的に樹脂で形成されることが多い。そのため、上記特許文献２のような構成と組み合わせた場合には、洗濯機の外槽がリングと接触することにより摩耗し、損傷に至るおそれがある。さらに、洗濯機の外槽は、強度を持たせるためのリブや、配線・配管の取り付け部を形成するなどの設計自由度を備え、要求仕様に合わせて外周面を複雑な形状とされることが多い。ところが、上記特許文献２のような構造とする場合、外槽の外周とリングとを滑らかに接触可能とするためには、外槽の外周面の形状が円形のものに限定されるので設計自由度が低下し、開発コストが増大する。   However, in order to reduce the weight of the washing machine and reduce the manufacturing cost, the outer tub is generally formed of a resin in many cases. Therefore, when combined with the configuration described in Patent Document 2, the outer tub of the washing machine may be worn by contact with the ring and may be damaged. In addition, the outer tub of the washing machine has a design freedom such as forming ribs to give strength and wiring / piping attachment parts, and the outer peripheral surface must be made into a complicated shape according to the required specifications There are many. However, in the case of the structure as described in Patent Document 2, in order to allow smooth contact between the outer periphery of the outer tub and the ring, the shape of the outer peripheral surface of the outer tub is limited to a circular shape so that the design is free. The degree of development decreases and development costs increase.

本発明は、このような課題を有効に解決することを目的としており、具体的には、外槽の振動を好適に抑制し、外槽と本体との隙間を小さくすることができる上に、外槽の設計自由度を減ずることなく外槽の損傷を抑制可能な洗濯機を提供することを目的とする。   The present invention aims to effectively solve such problems, specifically, it is possible to suitably suppress the vibration of the outer tub and reduce the gap between the outer tub and the main body, An object of the present invention is to provide a washing machine capable of suppressing damage to the outer tub without reducing the design freedom of the outer tub.

本発明は、かかる目的を達成するために、次のような手段を講じたものである。   In order to achieve this object, the present invention takes the following measures.

すなわち、本発明の洗濯機は、内部空間を形成された本体と、当該本体の内部空間に配置された外槽と、当該外槽の内部に配置され回転自在に支持された内槽と、前記外槽に設けられて前記内槽を回転させるモータと、前記本体に対して前記外槽を弾性的に支持する弾性支持手段とを備えるものにおいて、前記外槽と前記本体との間で前記内槽の回転軸回りの複数箇所に配され、圧縮により与圧を与えた状態で一端を前記外槽の外面に接続するとともに他端を前記本体の内面に隙間を介して対向させた弾性体と、前記与圧を与えた状態を基準として前記他端の圧縮方向への変位を許容し伸長方向への変位を規制する変位規制手段とを設けたことを特徴とする。   That is, the washing machine of the present invention includes a main body having an internal space formed therein, an outer tub disposed in the internal space of the main body, an inner tub disposed in the outer tub and rotatably supported, An apparatus comprising: a motor provided in an outer tub for rotating the inner tub; and elastic support means for elastically supporting the outer tub with respect to the main body, wherein the inner tub is interposed between the outer tub and the main body. An elastic body disposed at a plurality of locations around the rotation axis of the tank, and having one end connected to the outer surface of the outer tank while being pressurized by compression and having the other end opposed to the inner surface of the main body via a gap Displacement restricting means for permitting displacement in the compression direction of the other end and restricting displacement in the extension direction on the basis of the state in which the pressurization is applied is provided.

また本発明は、前記弾性体を、前記回転軸に交差する第１方向に沿って前記外槽を挟んで少なくとも一対設けるとともに、前記回転軸及び前記第１方向に交差する第２方向に沿って前記外槽を挟んで少なくとも一対設けたことを特徴とする。   According to the present invention, at least one pair of the elastic bodies is provided along the first direction intersecting the rotation axis with the outer tub interposed therebetween, and along the second direction intersecting the rotation axis and the first direction. At least one pair is provided across the outer tub.

さらに本発明は、前記本体に形成した内部空間が略直方体状をなすとともに、前記外槽が略有底円筒形状をなしており、前記第１方向に沿って設けた弾性体と前記第２方向に沿って設けた弾性体とは各々一つずつ組をなし、前記内部空間の隅部に近接して設けられることを特徴とする。   Further, according to the present invention, the internal space formed in the main body has a substantially rectangular parallelepiped shape, and the outer tub has a substantially bottomed cylindrical shape. The elastic body provided along the first direction and the second direction Each of the elastic bodies provided along the line forms a pair, and is provided close to the corner of the internal space.

そして本発明は、前記弾性体の前記他端に前記本体の内面に向かって凸状に形成した当接部を設けるとともに、当該当接部の先端を通り前記回転軸と平行な軸心を中心とする円弧状に形成した被当接部を前記本体の内面に設け、前記当接部と前記被当接部を対向させたことを特徴とする。   In the present invention, the other end of the elastic body is provided with an abutting portion formed convex toward the inner surface of the main body, and passes through the tip of the abutting portion and is centered on an axis parallel to the rotation axis. An abutted portion formed in an arc shape is provided on the inner surface of the main body, and the abutting portion and the abutted portion are opposed to each other.

また本発明は、前記弾性体の前記他端に前記回転軸と平行な軸心を中心とする円弧状に形成した当接部を設けるとともに、当該当接部と同一の軸心を中心とする円弧状に形成した被当接部を前記本体の内面に設け、前記当接部と前記被当接部とを対向させたことを特徴とする。   According to the present invention, the other end of the elastic body is provided with an abutting portion formed in an arc shape centering on an axis parallel to the rotation axis, and the same axis as the abutting portion is the center. An abutted portion formed in an arc shape is provided on the inner surface of the main body, and the abutting portion and the abutted portion are opposed to each other.

さらに本発明は、前記当接部に対して、少なくとも２つの弾性体の前記他端を接続したことを特徴とする。   Furthermore, the present invention is characterized in that the other ends of at least two elastic bodies are connected to the contact portion.

以上説明した本発明によれば、モータにより内槽を回転させる際に、外槽の固有振動数に回転速度が近接することで外槽が大きく振れ回ると、外槽の外周に設けられた弾性体が本体内部に接触することで、固有振動数を変化させて振動を低減することができる。   According to the present invention described above, when the inner tank is rotated by the motor, if the outer tank swings greatly due to the rotation speed approaching the natural frequency of the outer tank, the elasticity provided on the outer periphery of the outer tank. When the body contacts the inside of the main body, the natural frequency can be changed to reduce the vibration.

具体的には、外槽が振れ回る振動形態の固有振動数は、外槽を支持する弾性支持手段の弾性支持強さ（ばね定数）に依存し、回転速度がこの固有振動数に近接することで外槽は大きく振れ回る態様で振動し、外槽の外周に設けられた弾性体が本体内部に接触する。弾性体は変位規制手段により与圧が与えられた状態で規制されており、弾性体が本体内部と接触して圧縮されると、変位規制手段による規制が解かれることで外槽の弾性支持強さが急激に変化して外槽の固有振動数を変化させることができる。そのため、外槽の振動を小さくして、内槽を所定の回転周波数までさらに昇速させることができる。   Specifically, the natural frequency of the vibration form in which the outer tub sways depends on the elastic support strength (spring constant) of the elastic support means that supports the outer tub, and the rotational speed is close to this natural frequency. Thus, the outer tub vibrates in a manner that greatly swings, and an elastic body provided on the outer periphery of the outer tub contacts the inside of the main body. The elastic body is regulated in a state where a pressure is applied by the displacement regulating means, and when the elastic body is compressed in contact with the inside of the main body, the elastic support strength of the outer tub is released by releasing the regulation by the displacement regulating means. The abrupt change can change the natural frequency of the outer tub. Therefore, the vibration of the outer tank can be reduced and the inner tank can be further increased to a predetermined rotational frequency.

このように、外槽の固有振動数に起因する振動を振幅が過大になる前に低減し、内槽を所定の回転速度まで増速することが可能となることから、騒音や振動を防ぎ、設置場所の環境悪化を抑制することができる。さらには、弾性体が外槽に設けられていることから外槽の損傷を防止することができ、より動作安定性を高めることも可能となる。また、弾性体を取り付け可能とするのみで、外槽の外面の設計自由度は高く維持できるため、開発コストの増大を招くこともない。   In this way, the vibration due to the natural frequency of the outer tank is reduced before the amplitude becomes excessive, and the inner tank can be accelerated to a predetermined rotational speed, thus preventing noise and vibration. Deterioration of the environment at the installation location can be suppressed. Furthermore, since the elastic body is provided in the outer tub, the outer tub can be prevented from being damaged, and the operational stability can be further improved. In addition, the design freedom of the outer surface of the outer tub can be maintained high only by allowing the elastic body to be attached, so that the development cost does not increase.

特に、弾性体を第１方向及び第２方向に沿って設けた本発明によれば、互いに交差する２方向にそれぞれ外槽を挟んで少なくとも一対ずつ弾性体を配置することから、本体内面と弾性体の他端との隙間の管理が容易になり、設計自由度を向上させながら、弾性体を介して外槽と弾性体とを接触させる構成を容易に実現することが可能となる。   In particular, according to the present invention in which the elastic bodies are provided along the first direction and the second direction, at least a pair of elastic bodies are arranged in two directions intersecting each other with the outer tub interposed therebetween, so Management of the gap with the other end of the body is facilitated, and it is possible to easily realize a configuration in which the outer tub and the elastic body are brought into contact with each other through the elastic body while improving the degree of design freedom.

とりわけ、弾性体を内部空間の隅部に近接して設けた本発明によれば、略直方体状に形成された内部空間の隅部に近接して弾性体を設けることで、デッドスペースになりがちな内部空間と外槽との間の空間を有効利用して、より小型化を図ることが可能となる。さらには、外槽が振れ回り振動を行った場合のみならず回転方向に変位した場合であっても、弾性体の他端と本体の内面とを当接させることが可能となるため、モータの回転ムラやトルク変動に起因して外槽が回転方向に振動した際にも適切に振動を抑えることができる。   In particular, according to the present invention in which the elastic body is provided close to the corner portion of the internal space, dead space can be obtained by providing the elastic body close to the corner portion of the internal space formed in a substantially rectangular parallelepiped shape. The space between the inner space and the outer tub can be effectively used to further reduce the size. Furthermore, even when the outer tub vibrates and is displaced in the rotational direction, the other end of the elastic body and the inner surface of the main body can be brought into contact with each other. Even when the outer tub vibrates in the rotation direction due to rotation unevenness or torque fluctuation, vibration can be appropriately suppressed.

また、凸状の当接部とこれに対向する被当接部とを設ける本発明によれば、弾性体の他端に凸状の当接部を設けるとともに、その先端を通り内槽の回転軸と平行な軸心を中心とする円弧状の被当接部を本体の内面に設け、これら当接部と被当接部とを対向させることで、外槽の振れ回り振動が生じた際に滑らかに当接部と被当接部とを接触させることができるため、振動を好適に低減させることが可能となる。   In addition, according to the present invention in which the convex contact portion and the contacted portion opposite to the convex contact portion are provided, the convex contact portion is provided at the other end of the elastic body and the inner tank is rotated through the tip. When an arc-shaped abutted portion centering on an axis parallel to the shaft is provided on the inner surface of the main body, and the abutting portion and the abutted portion are opposed to each other, the whirling vibration of the outer tub occurs. Since the contact portion and the contacted portion can be brought into contact smoothly and smoothly, vibration can be suitably reduced.

さらに、円弧状に形成した当接部とこれに対向する被当接部とを設ける本発明によれば、弾性体の他端に円弧状の当接部を設けるとともに、当接部と同心の円弧状をなす被当接部を本体の内面に設け、当接部と被当接部とを対向させることで、外槽の振れ回り振動が生じた際に滑らかに当接部と被当接部とを接触させることができるため、振動を好適に低減させることが可能となる。   Further, according to the present invention in which the contact portion formed in the arc shape and the contacted portion opposite to the contact portion are provided, the arc-shaped contact portion is provided at the other end of the elastic body and is concentric with the contact portion. An abutted portion having an arc shape is provided on the inner surface of the main body, and the abutting portion and the abutted portion are opposed to each other, so that the abutment portion and the abutted portion can be smoothly contacted when a vibration of the outer tank occurs. Therefore, the vibration can be suitably reduced.

特に、当接部に対して少なくとも２つの弾性体の他端を接続する本発明によれば、外槽の変位方向の変化に応じて作用する弾性体が滑らかに切り替わることで、振動をより好適に低減させることが可能となる。   In particular, according to the present invention in which the other ends of the at least two elastic bodies are connected to the abutting portion, the elastic body acting according to the change in the displacement direction of the outer tub is smoothly switched, so that vibration is more suitable. It is possible to reduce it.

本発明の第１実施形態に係る洗濯機を示す縦断面図。The longitudinal cross-sectional view which shows the washing machine which concerns on 1st Embodiment of this invention. 図１のＡ−Ａ断面矢視図。FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1. 同洗濯機における第２の弾性支持手段を示す説明図。Explanatory drawing which shows the 2nd elastic support means in the washing machine. 同洗濯機の外槽に作用する力を模式的に示す説明図。Explanatory drawing which shows typically the force which acts on the outer tub of the washing machine. 同外槽に作用する力と変位の関係を説明するための説明図。Explanatory drawing for demonstrating the relationship between the force and displacement which act on the outer tank. 第１実施形態に係る洗濯機の第１変形例を示す縦断面図。The longitudinal cross-sectional view which shows the 1st modification of the washing machine which concerns on 1st Embodiment. 第１実施形態に係る洗濯機の第２変形例を示す縦断面図。The longitudinal cross-sectional view which shows the 2nd modification of the washing machine which concerns on 1st Embodiment. 本発明の第２実施形態に係る洗濯機を示す横断面図。The cross-sectional view which shows the washing machine which concerns on 2nd Embodiment of this invention. 第２実施形態に係る洗濯機の変形例を示す横断面図。The cross-sectional view which shows the modification of the washing machine which concerns on 2nd Embodiment. 本発明の第３実施形態に係る洗濯機を示す説明図。Explanatory drawing which shows the washing machine which concerns on 3rd Embodiment of this invention. 同洗濯機における弾性ユニットの構成を示す説明図。Explanatory drawing which shows the structure of the elastic unit in the washing machine. 第３実施形態に係る洗濯機の変形例を示す横断面図。The cross-sectional view which shows the modification of the washing machine which concerns on 3rd Embodiment. 本発明の第４実施形態に係る洗濯機の構成を示す説明図。Explanatory drawing which shows the structure of the washing machine which concerns on 4th Embodiment of this invention. 第４実施形態に係る洗濯機の第１変形例を示す横断面図。The cross-sectional view which shows the 1st modification of the washing machine which concerns on 4th Embodiment. 第４実施形態に係る洗濯機の第２変形例を示す横断面図。The cross-sectional view which shows the 2nd modification of the washing machine which concerns on 4th Embodiment. 第４実施形態に係る洗濯機の第３変形例を示す横断面図。The cross-sectional view which shows the 3rd modification of the washing machine which concerns on 4th Embodiment. 本発明の第５実施形態に係る洗濯機を示す説明図。Explanatory drawing which shows the washing machine which concerns on 5th Embodiment of this invention.

以下、本発明の実施形態を、図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

＜第１実施形態＞
図１は本発明の第１実施形態に係る洗濯機１（１Ａ）を示す縦断面図であり、図２は図１に記載したＡ−Ａ位置における断面矢視図である。図１，２に記載した洗濯機１は概略構成を示したものであり、本発明とは無関係な部分を省略している。 <First Embodiment>
FIG. 1 is a longitudinal sectional view showing a washing machine 1 (1A) according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG. The washing machine 1 shown in FIGS. 1 and 2 shows a schematic configuration, and portions not related to the present invention are omitted.

この洗濯機１は、本体２と、外槽３と、内槽としての洗濯脱水槽４と、弾性支持手段５〜５とを備える。   The washing machine 1 includes a main body 2, an outer tub 3, a washing / dehydrating tub 4 as an inner tub, and elastic support means 5-5.

ここで、本実施形態及び後述する他の実施形態では、本体２の幅方向をｘ方向、奥行き方向をｙ方向、上下方向をｚ方向と定義する。これらｘ，ｙ，ｚ方向は互いに直交しており、図中で示す座標系を構成する。以下、この座標系に従って説明を行う。   Here, in this embodiment and other embodiments described later, the width direction of the main body 2 is defined as the x direction, the depth direction is defined as the y direction, and the vertical direction is defined as the z direction. These x, y, and z directions are orthogonal to each other and constitute a coordinate system shown in the figure. Hereinafter, description will be made according to this coordinate system.

本体２は、平面視略正方形状の下板２２と、その縁部より立上げた四面をなす側板２１〜２１と、その上部に接続される上板２３とが略直方体状に一体的に構成され、これらにより囲まれることで略直方体状に形成された内部空間２ａを備える。   In the main body 2, a lower plate 22 having a substantially square shape in plan view, side plates 21 to 21 having four surfaces rising from the edge thereof, and an upper plate 23 connected to the upper portion thereof are integrally formed in a substantially rectangular parallelepiped shape. And an internal space 2a formed in a substantially rectangular parallelepiped shape by being surrounded by them.

側板２１及び下板２２は金属板により形成され、上板２３は樹脂により形成される。下板２２は、その下面の四隅近傍に、本体２を床面に設置可能な脚２２ａ〜２２ａを有する。上記上板２３には、洗濯脱水槽４へ洗濯物を出し入れ可能な略円形の開口２３ａが設けられる。また、上板２３は側板２１より脱着可能とすることで、本体２の内部空間２ａへ外槽３を容易に組み込むことができる。なお、上板２３は洗濯機１の操作を行うための操作パネルと一体的に構成してもよい。   The side plate 21 and the lower plate 22 are formed of a metal plate, and the upper plate 23 is formed of a resin. The lower plate 22 has legs 22a to 22a capable of installing the main body 2 on the floor surface in the vicinity of the four corners of the lower surface. The upper plate 23 is provided with a substantially circular opening 23a through which laundry can be taken in and out of the washing / dehydrating tub 4. In addition, by allowing the upper plate 23 to be detachable from the side plate 21, the outer tub 3 can be easily incorporated into the internal space 2 a of the main body 2. The upper plate 23 may be integrally formed with an operation panel for operating the washing machine 1.

外槽３は、耐熱性を備える合成樹脂により成形され、平面視略円形の底板３１と、底板３１の縁部より立ち上がる側板３２とを有する有底円筒状の部材である。外槽３は、本体２の内部空間２ａにおいて弾性支持手段５によって吊持され、側板３２の下部の４箇所には、弾性支持手段５を取り付けるための係合部３３を備える。   The outer tub 3 is a bottomed cylindrical member that is formed of a synthetic resin having heat resistance and has a bottom plate 31 that is substantially circular in plan view and a side plate 32 that rises from an edge of the bottom plate 31. The outer tub 3 is suspended by the elastic support means 5 in the internal space 2 a of the main body 2, and is provided with engaging portions 33 for attaching the elastic support means 5 at four locations below the side plate 32.

洗濯脱水槽４は、金属によって形成され、平面視略円形の底板４１と、底板４１の縁部より立ち上がる側板４２とを有する有底円筒状の部材である。洗濯脱水槽４は、外槽３の内部でこの外槽３と同軸に配されるとともに、外槽３によって回転自在に支持される。側板４２及び底板４１には図示しない多数の開口が設けられ、この開口を通じて洗濯脱水槽４内の水を排出することができる。   The laundry dewatering tub 4 is a bottomed cylindrical member that is made of metal and has a bottom plate 41 that is substantially circular in plan view and a side plate 42 that rises from an edge of the bottom plate 41. The washing / dehydrating tub 4 is arranged coaxially with the outer tub 3 inside the outer tub 3 and is rotatably supported by the outer tub 3. A large number of openings (not shown) are provided in the side plate 42 and the bottom plate 41, and water in the washing and dewatering tub 4 can be discharged through the openings.

洗濯脱水槽４は、モータ３４が底板３１の上面側に向けて延出する駆動軸３５を回転させることで回転する。また、モータ３４による回転力は、図示しない伝達手段を介して、洗濯脱水槽４の底板４１中央に設けられたパルセータ（撹拌翼）４３にも駆動力を与え、パルセータ４３を回転させる。そのため、洗濯機１は、洗濯時には主としてパルセータ４３のみを回転させ、脱水時には洗濯脱水槽４とパルセータ４３とを一体的に高速で回転させることができる。   The washing / dehydrating tub 4 rotates when the motor 34 rotates the drive shaft 35 extending toward the upper surface side of the bottom plate 31. Further, the rotational force by the motor 34 also applies a driving force to the pulsator (stirring blade) 43 provided at the center of the bottom plate 41 of the washing / dehydrating tub 4 via a transmission means (not shown) to rotate the pulsator 43. Therefore, the washing machine 1 can rotate only the pulsator 43 mainly at the time of washing, and can rotate the washing / dehydrating tub 4 and the pulsator 43 integrally at a high speed at the time of dehydration.

パルセータ４３の回転の中心と洗濯脱水槽４の回転の中心とは、Ｚ軸に平行な同一の回転軸Ｒａに設定される。なお、回転軸Ｒａは、洗濯脱水槽４の底板４１の中心、及び、外槽３の底板３１の中心をも通過する。   The rotation center of the pulsator 43 and the rotation center of the washing / dehydrating tub 4 are set to the same rotation axis Ra parallel to the Z axis. The rotation axis Ra also passes through the center of the bottom plate 41 of the washing / dehydrating tub 4 and the center of the bottom plate 31 of the outer tub 3.

弾性支持手段５〜５は、外槽３を吊持するものである。本実施形態において弾性支持手段５〜５は４つ設けられ、それぞれ吊棒５１とその先端に取り付けたサスペンション５２とから構成される。サスペンション５２は、外筒５３とその内部に配された圧縮コイルばね５４とを有する。本体２には、その内部空間２ａの四隅２ａ１〜２ａ１（図２参照）における上板２３近傍に吊棒取り付け部２４〜２４がそれぞれ設けられ、各吊棒取り付け部２４〜２４に吊棒５１の基端側が取り付けられる。さらにサスペンション５２の外筒５３は、上記外槽３の係合部３３に引っ掛けられる態様でこの係合部３３と係合する。こうすることで、外槽３は、４つの弾性支持手段５〜５により内部空間２ａ内で吊持される。   The elastic support means 5 to 5 suspend the outer tub 3. In the present embodiment, four elastic support means 5 to 5 are provided, each of which includes a suspension bar 51 and a suspension 52 attached to the tip thereof. The suspension 52 includes an outer cylinder 53 and a compression coil spring 54 disposed therein. The main body 2 is provided with suspension rod mounting portions 24 to 24 in the vicinity of the upper plate 23 in the four corners 2a1 to 2a1 (see FIG. 2) of the internal space 2a, and the suspension rod mounting portions 24 to 24 are provided with suspension rods 51. The proximal side is attached. Further, the outer cylinder 53 of the suspension 52 engages with the engaging portion 33 in a manner that it is hooked on the engaging portion 33 of the outer tub 3. By carrying out like this, the outer tank 3 is suspended in the internal space 2a by the four elastic support means 5-5.

各弾性支持手段５の圧縮コイルばね５４は、外槽３の重量により圧縮されて反発力を生じるとともに、変位を吸収しながら外槽３を弾性的に支持する。さらに、４つの弾性支持手段５〜５はそれぞれ斜め方向より外槽３を吊持することで、協働して外槽３を本体２の中央方向に位置させるべくバランスを保つ役割を果たす。   The compression coil spring 54 of each elastic support means 5 is compressed by the weight of the outer tub 3 to generate a repulsive force, and elastically supports the outer tub 3 while absorbing the displacement. Further, the four elastic support means 5 to 5 each suspend the outer tub 3 from an oblique direction, and thus play a role of keeping a balance so that the outer tub 3 is positioned in the central direction of the main body 2 in cooperation.

すなわち、弾性支持手段５は、サスペンション５２の圧縮コイルばね５４の弾性に加えて、その位置関係により、吊持する外槽３をあたかも振り子のように中心に戻す復元力を得ることができる。そのため、外槽３は中心位置よりｘ方向又はｙ方向に変位した場合において、その変位量に応じた復元力を弾性支持手段５より得て、この復元力により本体２の中心位置に戻される。   In other words, in addition to the elasticity of the compression coil spring 54 of the suspension 52, the elastic support means 5 can obtain a restoring force that returns the suspended outer tub 3 to the center as if it were a pendulum. Therefore, when the outer tub 3 is displaced from the center position in the x direction or the y direction, a restoring force corresponding to the amount of displacement is obtained from the elastic support means 5 and returned to the center position of the main body 2 by this restoring force.

ここで、上記のように外槽３が弾性支持手段５によって弾性的に支持されることで、外槽３が回転軸Ｒａ回りに振れ回る振動形態に対応する低次固有振動数は約２〜３Ｈｚ程度の非常に低い回転速度領域に現れる。洗濯機１において最も振動が生じ易いのは、パルセータ４３とともに洗濯脱水槽４を高速回転させる場合であり、一般的には上記低次固有振動数よりも十分に高い所定の運転速度で回転されるものの、起動して昇速するまでの過程、あるいは、上記運転速度より減速する過程において、洗濯脱水槽３の回転速度が低次固有振動数に合致又は近接した場合には、外槽３が回転軸Ｒａ回りに振れ回る態様で大きく振動する。さらには、洗濯脱水槽４の内部に入れる洗濯物に偏りがある場合には、これが回転軸Ｒａ回りのアンバランスとなって加振力が増すことで、外槽３の振動はより増大する。   Here, as the outer tub 3 is elastically supported by the elastic support means 5 as described above, the low-order natural frequency corresponding to the vibration mode in which the outer tub 3 swings around the rotation axis Ra is about 2 to 2. Appears in a very low rotational speed region of about 3 Hz. In the washing machine 1, vibration is most likely to occur when the laundry dewatering tub 4 is rotated at a high speed together with the pulsator 43 and is generally rotated at a predetermined operation speed sufficiently higher than the low-order natural frequency. However, if the rotational speed of the washing dewatering tub 3 matches or comes close to the low-order natural frequency in the process from starting up to speeding up or decelerating from the above operating speed, the outer tub 3 rotates. It vibrates greatly in such a manner that it swings around the axis Ra. Furthermore, when the laundry put into the inside of the washing / dehydrating tub 4 is biased, this becomes an imbalance around the rotation axis Ra, and the vibration force of the outer tub 3 is further increased by increasing the excitation force.

そこで、本実施形態の洗濯機１（１Ａ）は、外槽３の振動を小さく抑えるため、図１，図２に示すとおり、外槽３を構成する側板３２の外面３２ａの上部近傍の複数箇所に第２の弾性支持手段６が配置される。より具体的には、洗濯機１（１Ａ）は、回転軸Ｒａに交差する第１方向としてのｘ方向に沿って配され、外槽３を挟んで設けられた一対のｘ方向弾性支持手段６ｘ，６ｘと、回転軸Ｒａ及び第１方向に交差する第２方向としてのｙ方向に沿って配され、外槽３を挟んで設けられた一対のｙ方向弾性支持手段６ｙ，６ｙとを備える。これら弾性支持手段６ｘ，６ｙは平面視において回転軸Ｒａを中心とする十文字に配され、それぞれ本体２を構成する側板２１〜２１に対向する。以下、配置された方向により区別が必要な際には、ｘ方向弾性支持手段６ｘ又はｙ方向弾性支持手段６ｙと称し、方向による区別が不要な際にはこれらを総じて第２の弾性支持手段６と称する。   Therefore, the washing machine 1 (1A) of the present embodiment has a plurality of locations near the upper portion of the outer surface 32a of the side plate 32 constituting the outer tub 3, as shown in FIGS. The second elastic support means 6 is arranged on the front side. More specifically, the washing machine 1 (1A) is arranged along the x direction as the first direction intersecting the rotation axis Ra, and a pair of x direction elastic support means 6x provided with the outer tub 3 interposed therebetween. , 6x, and a pair of y-direction elastic support means 6y, 6y arranged along the y direction as the second direction intersecting the rotation axis Ra and the first direction and provided with the outer tub 3 interposed therebetween. These elastic support means 6x and 6y are arranged in a cross shape with the rotation axis Ra as the center in plan view, and face the side plates 21 to 21 constituting the main body 2, respectively. Hereinafter, when distinction is necessary depending on the arranged direction, it is referred to as x-direction elastic support means 6x or y-direction elastic support means 6y, and when distinction by direction is not necessary, these are collectively referred to as second elastic support means 6. Called.

図３（ａ）は、第２の弾性支持手段６を拡大して示す平面図である。第２の弾性支持手段６は、弾性体としての圧縮コイルばね６１と、圧縮コイルばね６１の一端６１ａに取り付けられたブロック状の基端部材６３と、他端６１ｂに取り付けられた板状の先端部材６４と、圧縮コイルばね６１に与圧を与える変位規制手段としての規制紐６２とから構成される。基端部材６３は、外槽３の外面３２ａに圧縮コイルばね６１を取り付けるための取り付け部材として機能する。先端部材６４は、本体２を構成する側板２１の内面２１ａとの間で所定の隙間Ｅを持ち、これ以上に外槽３が変位した場合に先端部材６４が本体２の内面２１ａに当接する。すなわち、先端部材６４は、本体２の内面２１ａに当接するための当接部として機能する。こうすることで、圧縮コイルばね６１は、基端部材６３を介して一端６１ａを外槽３の外面に接続され、他端６１ｂが隙間Ｅを介して本体２の内面２１ａに対向する。   FIG. 3A is an enlarged plan view showing the second elastic support means 6. The second elastic support means 6 includes a compression coil spring 61 as an elastic body, a block-like base end member 63 attached to one end 61a of the compression coil spring 61, and a plate-like tip attached to the other end 61b. It comprises a member 64 and a regulating string 62 as displacement regulating means for applying pressure to the compression coil spring 61. The base end member 63 functions as an attachment member for attaching the compression coil spring 61 to the outer surface 32 a of the outer tub 3. The front end member 64 has a predetermined gap E between the front end member 64 and the inner surface 21 a of the side plate 21 constituting the main body 2, and the front end member 64 comes into contact with the inner surface 21 a of the main body 2 when the outer tub 3 is displaced beyond this. That is, the tip member 64 functions as a contact portion for contacting the inner surface 21 a of the main body 2. In this way, the compression coil spring 61 has one end 61 a connected to the outer surface of the outer tub 3 through the base end member 63 and the other end 61 b opposed to the inner surface 21 a of the main body 2 through the gap E.

図３（ｂ）は、第２の弾性支持手段６を構成する圧縮コイルばね６１と、変位規制手段たる規制紐６２との関係を説明する説明図である。   FIG. 3B is an explanatory view for explaining the relationship between the compression coil spring 61 constituting the second elastic support means 6 and the restriction string 62 as the displacement restriction means.

圧縮コイルばね６１は、図３（ｂ）に示すとおり、自然長Ｌの状態（図３（ｂ）上段）より与圧Ｆｐが付与されることでΔＬだけ圧縮された状態となる（図３（ｂ）中段）。この状態で、圧縮コイルばね６１の中央を通り、基端部材６３と先端部材６４との間を連結する規制紐６２が取り付けられると、圧縮コイルばね６１はこれ以上伸長しないよう変位が規制される。ただし、規制紐６２は可撓性を有するので、圧縮コイルばね６１は、上記与圧Ｆｐを与えた状態を基準として圧縮方向への変位は許容される（図３（ｂ）下段）。   As shown in FIG. 3B, the compression coil spring 61 is compressed by ΔL by applying a pressure Fp from the state of the natural length L (upper stage in FIG. 3B) (FIG. 3B). b) Middle stage). In this state, when a regulating string 62 that passes through the center of the compression coil spring 61 and connects the base end member 63 and the tip end member 64 is attached, the displacement of the compression coil spring 61 is regulated so as not to extend any further. . However, since the regulation string 62 has flexibility, the compression coil spring 61 is allowed to be displaced in the compression direction with reference to the state where the pressurizing pressure Fp is applied (the lower stage in FIG. 3B).

図４（ａ），（ｂ）は、本実施形態の洗濯機１の構造を模式的に表したものである。以下、図１を参照しながら、図４（ａ），（ｂ）を用いて、洗濯機１の外槽３に作用する力について説明を行う。   4A and 4B schematically show the structure of the washing machine 1 of the present embodiment. Hereinafter, the force acting on the outer tub 3 of the washing machine 1 will be described with reference to FIGS.

まず、外槽３は、上述した４つの弾性支持手段５〜５によって吊持されることで、中心からの変位ｅに応じて、外槽３を中心に戻すための復元力ｋ・ｅが生ずる。ここでｋは、弾性支持手段５〜５によって中心方向に働く復元力をばね力と考えた場合（図４（ａ）参照）のばね定数である。   First, the outer tub 3 is suspended by the four elastic support means 5 to 5 described above, so that a restoring force k · e for returning the outer tub 3 to the center is generated according to the displacement e from the center. . Here, k is a spring constant when the restoring force acting in the center direction by the elastic support means 5 to 5 is considered as a spring force (see FIG. 4A).

さらに、外槽３の質量をＭとして、重心位置Ｃｇより距離（変位）ｅだけ離れた回転中心Ｃｒ回りに外槽３が振れ回り運動を行う場合には、外径方向に向かう慣性力（遠心力）Ｍ・ω２・ｅが生ずる。ここで、ωは外槽３が振れ回る際の角周波数であり、洗濯脱水槽４が回転する際の角周波数ωと等しい。また、洗濯脱水槽４（図２参照）のような、外槽３の内部における回転部分のアンバランスをΔｍとして、回転中心Ｃｒからの距離をｒとすると、このアンバランスに起因する慣性力（遠心力）はΔｍ・ｒ・ω２となる。 Further, when the outer tub 3 performs a swinging motion around the rotation center Cr separated by a distance (displacement) e from the center of gravity Cg, where M is the mass of the outer tub 3, an inertial force (centrifugation in the outer diameter direction) Force) M · ω 2 · e is generated. Here, ω is an angular frequency when the outer tub 3 swings and is equal to an angular frequency ω when the washing / dehydrating tub 4 rotates. In addition, assuming that the unbalance of the rotating part in the outer tub 3 such as the washing / dehydrating tub 4 (see FIG. 2) is Δm and the distance from the rotation center Cr is r, the inertial force ( (Centrifugal force) is Δm · r · ω 2 .

そこで、これらより力の釣り合いを考えた場合、次式のような関係が得られる。
Ｍ・ω２・ｅ＋Δｍ・ｒ・ω２＝ｋ・ｅ ・・・式（１）
これを、変形すると次式のようになる。
ｅ＝Δｍ・ｒ・ω２／（Ｍ・ω２−ｋ） ・・・式（２）
式（２）より、Ｍ・ω２−ｋ＝０を満たす回転速度となった場合には、変位ｅが極大、すなわち振動が大きくなる共振状態となる。 Therefore, when considering the balance of force from these, the following relationship is obtained.
M · ω 2 · e + Δm · r · ω 2 = k · e Formula (1)
When this is transformed, the following equation is obtained.
e = Δm · r · ω 2 / (M · ω 2 −k) (2)
From equation (2), when the rotational speed satisfies M · ω 2 −k = 0, the displacement e becomes a maximum, that is, a resonance state in which the vibration becomes large is obtained.

さらに、式（１）の左辺により生ずる力を慣性力Ｆｉ、右辺により生ずるばね力Ｆｋとすると、次のように表すことができる。
Ｆｉ＝Ｍ・ω２・ｅ＋Δｍ・ｒ・ω２ ・・・式（３）
Ｆｋ＝ｋ・ｅ ・・・式（４） Further, when the force generated by the left side of the expression (1) is the inertial force Fi and the spring force Fk generated by the right side, it can be expressed as follows.
Fi = M · ω 2 · e + Δm · r · ω 2 Formula (3)
Fk = k · e Formula (4)

図５は、上式の関係を、振幅（変位）ｅを横軸、慣性力Ｆｉやばね力Ｆｋを含む振動力Ｆを縦軸にして表したグラフである。図中で示す直線Ｌ１〜Ｌ１０は、式（３）の関係を表す慣性特性直線であり、直線Ｌａは、式（４）の関係を表すばね特性直線であり、これらの交点は、角周波数ωの時の振幅（変位）ｅと振動力Ｆを表す。   FIG. 5 is a graph showing the relationship of the above equation with the amplitude (displacement) e as the horizontal axis and the vibration force F including the inertial force Fi and the spring force Fk as the vertical axis. The straight lines L1 to L10 shown in the figure are inertial characteristic straight lines representing the relationship of the expression (3), the straight line La is a spring characteristic straight line representing the relation of the expression (4), and these intersections are expressed by the angular frequency ω. Represents the amplitude (displacement) e and the vibration force F.

慣性特性直線Ｌ１〜Ｌ１０は、傾きが角周波数ωの二乗に比例し、横軸との切片（交点）はΔｍ・ｒ／Ｍで表される。慣性特性直線Ｌ１〜Ｌ１０は、それぞれ角周波数ωの大きさを異ならせて記載したものであり、角周波数ωが大きくなるにつれて、直線Ｌ１より、Ｌ２、Ｌ３、・・・Ｌ１０のように振幅ｅと慣性力Ｆｉの関係が変化することを示している。そのため、各慣性特性直線Ｌ１〜Ｌ１０とばね特性直線Ｌａとの交点は、角周波数ωごとの振幅ｅと振動力Ｆとの関係を示すものとなる。   The inertia characteristic straight lines L1 to L10 have an inclination proportional to the square of the angular frequency ω, and an intercept (intersection) with the horizontal axis is represented by Δm · r / M. The inertia characteristic lines L1 to L10 are described with different angular frequencies ω, and as the angular frequency ω increases, the amplitude e increases from the straight line L1 to L2, L3,... L10. And the relationship between the inertia force Fi and the inertia force Fi. For this reason, the intersections of the inertia characteristic lines L1 to L10 and the spring characteristic line La indicate the relationship between the amplitude e and the vibration force F for each angular frequency ω.

洗濯脱水槽４（図１参照）を起動させ、角周波数ωが増大していく過程を考えた場合、次のように振幅ｅと振動力Ｆが変化する。   Considering the process in which the laundry dewatering tub 4 (see FIG. 1) is activated and the angular frequency ω increases, the amplitude e and the vibration force F change as follows.

まず慣性直線Ｌ１に対応する角周波数ωとなった場合、慣性特性直線Ｌ１とばね特性直線Ｌａとの交点Ｐ１に対応する振幅ｅと振動力Ｆが生ずる。角周波数ωが増大し、慣性特性直線Ｌ２に対応するものとなった場合、慣性特性直線Ｌ２とばね特性直線Ｌａとの交点Ｐ２に対応する振幅ｅと振動力Ｆが生ずる。さらに角周波数ωが増大して慣性特性直線Ｌ３に対応するものとなった場合、慣性特性直線Ｌ３とばね特性直線Ｌａとの交点Ｐ３に対応する振幅ｅと振動力Ｆが生ずる。この状態より、さらに角周波数ωが増大して、慣性直線Ｌ４の状態に移行しようとした場合、慣性特性直線Ｌａとの交点に対応する振幅ｅは非常に大きなものになる。   First, when the angular frequency ω corresponding to the inertial straight line L1 is reached, an amplitude e and a vibration force F corresponding to the intersection P1 between the inertial characteristic straight line L1 and the spring characteristic straight line La are generated. When the angular frequency ω increases and corresponds to the inertial characteristic line L2, an amplitude e and a vibration force F corresponding to the intersection P2 between the inertial characteristic line L2 and the spring characteristic line La are generated. Further, when the angular frequency ω increases to correspond to the inertia characteristic line L3, an amplitude e and a vibration force F corresponding to the intersection P3 between the inertia characteristic line L3 and the spring characteristic line La are generated. When the angular frequency ω is further increased from this state and an attempt is made to shift to the state of the inertial straight line L4, the amplitude e corresponding to the intersection with the inertial characteristic line La becomes very large.

しかしながら、上述したとおり、本実施形態では、外槽３と本体２との間に隙間Ｅを介在させて第２の弾性支持手段６を設けるので（図１，図３参照）、弾性支持手段６を構成する圧縮コイルばね６１の作用により、より強い力で外槽３を中心方向に押し戻そうとする。この際、圧縮コイルばね６１は、予め与圧Ｆｐを与えた状態で変位規制手段たる規制紐６２により規制されるので、僅かでも変位を生じた場合に規制紐６２による規制が解除され、与圧Ｆｐの分が上乗せされて外槽３に作用する。すなわち、外槽３が大きく振動して隙間Ｅ以上に変位した場合、与圧Ｆｐを含むことで急激に大きなばね力が作用し、ばね定数ｋが見かけ上大きくなる。すなわち、ばね特性直線Ｌａは、振幅ｅが隙間Ｅ以上の領域では、傾きがより大きなばね特性直線Ｌｂに遷移する。   However, as described above, in this embodiment, since the second elastic support means 6 is provided with the gap E interposed between the outer tub 3 and the main body 2 (see FIGS. 1 and 3), the elastic support means 6 is provided. By the action of the compression coil spring 61 constituting the above, the outer tub 3 is pushed back in the center direction with a stronger force. At this time, the compression coil spring 61 is regulated by the regulating string 62 as the displacement regulating means in a state where the pressurized pressure Fp is applied in advance, so that even if a slight displacement occurs, the regulation by the regulating string 62 is released. Fp is added and acts on the outer tub 3. That is, when the outer tub 3 is vibrated greatly and displaced beyond the gap E, a large spring force acts abruptly by including the pressure Fp, and the spring constant k is apparently increased. That is, the spring characteristic straight line La transitions to a spring characteristic straight line Lb having a larger inclination in a region where the amplitude e is greater than or equal to the gap E.

これにより、慣性直線Ｌ４とばね特性直線Ｌｂの交点Ｐ４に対応する振幅ｅと振動力Ｆとなり、振幅ｅは急激に小さくなる。これは、第２の弾性支持手段６によって、外槽３の低次固有振動数が変化したことを示しており、角周波数ωとのずれが生ずることで振動が低減する。   As a result, the amplitude e and the vibration force F corresponding to the intersection point P4 of the inertial straight line L4 and the spring characteristic straight line Lb are obtained, and the amplitude e decreases rapidly. This indicates that the low-order natural frequency of the outer tub 3 has been changed by the second elastic support means 6, and the vibration is reduced by the deviation from the angular frequency ω.

振幅ｅが隙間Ｅよりも小さくなることで再び外槽３の低次固有振動数は元に戻るが、この際には角周波数ωは低次固有振動数よりも大きくなっており、再び共振が生ずることなく振幅ｅの小さい状態を維持することができる。すなわち、角周波数ωが増大し、慣性直線Ｌ５，Ｌ６のように移行しても、ばね特性直線Ｌａとの交点Ｐ５，Ｐ６に示されるように、振幅ｅが隙間Ｅを越えることはなく、小さいレベルを維持することができる。   When the amplitude e becomes smaller than the gap E, the lower-order natural frequency of the outer tub 3 is restored again. However, at this time, the angular frequency ω is larger than the lower-order natural frequency, and resonance occurs again. A state where the amplitude e is small can be maintained without being generated. That is, even if the angular frequency ω increases and shifts like the inertia lines L5 and L6, the amplitude e does not exceed the gap E and is small as shown by the intersection points P5 and P6 with the spring characteristic line La. The level can be maintained.

なお、バネ特性直線Ｌｂは、必ずしも原点を通過することまでは必要では無く、見かけ上のバネ定数ｋが急激に増大する関係にあれば良い。すなわち、与圧Ｆｐを十分に大きく設定していれば、与圧を与える際の圧縮量ΔＬや隙間Ｅ（図３参照）の大きさを適宜変更してもよい。   Note that the spring characteristic straight line Lb is not necessarily required to pass through the origin, and may be in a relationship in which the apparent spring constant k increases rapidly. That is, if the pressurization pressure Fp is set sufficiently large, the amount of compression ΔL and the gap E (see FIG. 3) when the pressurization is applied may be appropriately changed.

上記のとおり、圧縮コイルばね６１を備える第２の弾性支持手段６が外槽３に設けられるので、洗濯脱水槽４を回転させ所定の運転速度まで増速させる間に、角周波数ω、すなわち回転速度が外槽３の低次固有振動数と近くなり、隙間Ｅを越えて振幅ｅが大きくなった場合、第２の弾性支持手段６が本体２の内面２１ａに当接する。第２の弾性支持手段６を構成する圧縮コイルばね６１は、予め与圧を与えられた状態で伸長方向への変位が規制されるので、圧縮方向への変位が生じた場合に与圧Ｆｐが作用することで低次固有振動数が大きく変化し、これにより振動を低減することが可能となる。さらに、振幅ｅが隙間Ｅよりも小さくなった場合には低次固有振動数が元に戻るが、洗濯脱水槽４の回転速度が大きくなり、低次固有振動数よりすでに離間した状態となることで、振動の増大を抑えることができる。   As described above, since the second elastic support means 6 including the compression coil spring 61 is provided in the outer tub 3, the angular frequency ω, that is, the rotation, while the laundry dewatering tub 4 is rotated up to a predetermined operating speed. When the speed becomes close to the low-order natural frequency of the outer tub 3 and the amplitude e increases beyond the gap E, the second elastic support means 6 comes into contact with the inner surface 21 a of the main body 2. The compression coil spring 61 that constitutes the second elastic support means 6 is restricted from being displaced in the extension direction in a state in which a pressure is applied in advance, so that when the displacement in the compression direction occurs, the pressure Fp is reduced. By acting, the low-order natural frequency changes greatly, and it becomes possible to reduce the vibration. Furthermore, when the amplitude e becomes smaller than the gap E, the low-order natural frequency returns to the original, but the rotational speed of the washing / dehydrating tub 4 increases, and the state is already separated from the low-order natural frequency. Thus, an increase in vibration can be suppressed.

従って、振動及び騒音を小さく抑えることができ、洗濯機１の設置場所周辺の環境を良好にすることができる。さらには、本体２と外槽３との隙間Ｅを小さくしても、振動によりこれらが激しく衝突して損傷することを抑制することができるため、外槽３に対して本体２を小さくして洗濯機１全体を小型化することが可能である。また、本体２の寸法をそのままにして、外槽３を大きくした場合には、洗濯機１全体の寸法を変えることなく洗濯容量を増大させることが可能である。   Therefore, vibration and noise can be suppressed to a small level, and the environment around the place where the washing machine 1 is installed can be improved. Furthermore, even if the gap E between the main body 2 and the outer tub 3 is reduced, it is possible to prevent these from violently colliding and being damaged by vibration. It is possible to reduce the size of the washing machine 1 as a whole. Moreover, when the outer tub 3 is enlarged while the dimensions of the main body 2 are kept as they are, the washing capacity can be increased without changing the overall dimensions of the washing machine 1.

そして、第２の弾性支持手段６を構成する圧縮コイルばね６１を外槽３側に取り付け、外槽３の変位に伴って圧縮コイルばね６１との間で当接、離間を繰り返す相手側を本体２としている。本体２の側板２１は金属によって形成されることから、圧縮コイルばね６１の当接・離間に対する十分な強度を持ち、損傷のおそれが少ない。さらには、圧縮コイルばね６１の先端（他端）６１ｂと本体２の側板２１とを、ほぼ平行に相対させることができるため、当接する際の片当たりを防いで局所的な摩耗を防止することも可能である。なお、本体２を構成する側板２１の内面２１ａに、補強を行うための金属板や、圧縮コイルばね６１が当接する際の衝撃を少なくするとともに騒音の低減を図るための弾性シートを設けることも好適である。   And the compression coil spring 61 which comprises the 2nd elastic support means 6 is attached to the outer tank 3 side, and the other party which repeats contact and separation with the compression coil spring 61 with the displacement of the outer tank 3 is a main body. 2. Since the side plate 21 of the main body 2 is made of metal, it has a sufficient strength against the contact and separation of the compression coil spring 61 and is less likely to be damaged. Furthermore, since the front end (other end) 61b of the compression coil spring 61 and the side plate 21 of the main body 2 can be made to be substantially parallel to each other, it is possible to prevent local wear by preventing contact with each other at the time of contact. Is also possible. In addition, it is also possible to provide a metal plate for reinforcement on the inner surface 21a of the side plate 21 that constitutes the main body 2 and an elastic sheet for reducing impact and reducing noise when the compression coil spring 61 comes into contact. Is preferred.

他方、外槽３は、樹脂により形成されており比較的表面の強度が低いものの、圧縮コイルばね６１との当接、離間を繰り返すことがないため、表面の摩耗を抑制し、長期間の使用でも損傷のおそれを減らすことができる。   On the other hand, the outer tub 3 is made of resin and has a relatively low surface strength, but does not repeatedly contact and separate from the compression coil spring 61, thereby suppressing surface wear and long-term use. But it can reduce the risk of damage.

さらに、上述の通り、圧縮コイルばね６１が基端部材６３を介して外槽３の外面３２ａに取り付けられるので、外槽３の外面３２ａは必ずしも円周面とすることを要せず、リブ、配管、配線の取り付け部等を設けた形状とすることができ、設計自由度を高めることも可能である。   Furthermore, as described above, since the compression coil spring 61 is attached to the outer surface 32a of the outer tub 3 via the base end member 63, the outer surface 32a of the outer tub 3 does not necessarily need to be a circumferential surface, and a rib, It is possible to provide a shape provided with piping, wiring attachments, etc., and it is possible to increase the degree of design freedom.

図６は、図１等に示した第１実施形態に係る洗濯機１（１Ａ）の第１変形例を示す縦断面図である。後述する構成以外は図１〜図５に示した洗濯機１Ａと同様であるため、同じ部分には同じ符号を付して説明を省略する。   FIG. 6 is a longitudinal sectional view showing a first modification of the washing machine 1 (1A) according to the first embodiment shown in FIG. 1 and the like. Since it is the same as that of 1 A of washing machines shown in FIGS. 1-5 except the structure mentioned later, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

図６に示す洗濯機１Ｂは、図１に示す洗濯機１Ａの構成に、さらに４つの第２の弾性支持手段６〜６を付加したものである。具体的には、この洗濯機１Ｂは、図１に示す洗濯機１Ａが備える第２の弾性支持手段６〜６の直ぐ下であって、外槽３の下方より約１／３程度の高さ位置に、第２の弾性支持手段６を備える。   A washing machine 1B shown in FIG. 6 is obtained by adding four second elastic support means 6 to 6 to the configuration of the washing machine 1A shown in FIG. Specifically, the washing machine 1B is located immediately below the second elastic support means 6 to 6 included in the washing machine 1A shown in FIG. The second elastic support means 6 is provided at the position.

このように洗濯機１Ｂは、上下方向（Ｚ方向）に二段で第２の弾性支持手段６が配されるので、外槽３がｘ軸、ｙ軸回りに揺動した場合にも上下の第２の弾性支持手段６が本体２に当接し、外槽３の傾きを抑制することができる。そのため、外槽３が回転軸Ｒａ回りに振れ回る形態の振動を抑えるのみならず、ｘ軸、ｙ軸回りに揺動するピッチングモードでの振動も抑制することができる。なお、重量の増加が許容されるのであれば、三段以上に第２の弾性支持手段６を設ける構成としてもよい。   As described above, since the second elastic support means 6 is arranged in two stages in the vertical direction (Z direction), the washing machine 1B can be moved up and down even when the outer tub 3 swings around the x axis and the y axis. The second elastic support means 6 abuts on the main body 2, and the inclination of the outer tub 3 can be suppressed. Therefore, not only the vibration of the form in which the outer tub 3 swings around the rotation axis Ra can be suppressed, but also the vibration in the pitching mode that swings around the x axis and the y axis can be suppressed. If the increase in weight is allowed, the second elastic support means 6 may be provided in three or more stages.

図７（ａ）は、図１等に示した第１実施形態に係る洗濯機１（１Ａ）の第２変形例を示す図である。後述する構成以外は図１〜図５に示した洗濯機１Ａと同様であるため、同じ部分には同じ符号を付して説明を省略する。   Fig.7 (a) is a figure which shows the 2nd modification of the washing machine 1 (1A) based on 1st Embodiment shown in FIG.1 etc. FIG. Since it is the same as that of 1 A of washing machines shown in FIGS. 1-5 except the structure mentioned later, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

図７（ａ）に示す洗濯機１Ｃは、本体２の内側に被当接部としての被当接板７１を設けた点が図１に示す洗濯機１Ａと異なる。図７（ｂ）は、この被当接板７１の形状を説明するための斜視図である。被当接板７１は、本体２を構成する側板２１の内面２１ａに接する平面視略円形に配置されたものであり、樹脂又はスチール製の薄板で形成された帯状部材である。この被当接板７１と、第２の弾性支持手段６を構成する圧縮コイルばね６１とは、先端部材６４（図３参照）を介して互いに当接可能な位置関係に配置される。さらに、被当接板７１は、圧縮コイルばね６１の直径よりも上下方向にやや大きな幅寸法を持たせ、効果的に第２の弾性支持手段６と当接可能に構成される。なお、被当接板７１は、一個の部材から構成される必要はなく、複数の部材を接続することで平面視略円形をなすように構成してもよい。   A washing machine 1C shown in FIG. 7A is different from the washing machine 1A shown in FIG. 1 in that a contact plate 71 as a contact portion is provided inside the main body 2. FIG. 7B is a perspective view for explaining the shape of the abutted plate 71. The abutted plate 71 is disposed in a substantially circular shape in plan view in contact with the inner surface 21a of the side plate 21 constituting the main body 2, and is a strip-shaped member formed of a thin plate made of resin or steel. The abutted plate 71 and the compression coil spring 61 constituting the second elastic support means 6 are arranged in a positional relationship in which they can abut each other via a tip member 64 (see FIG. 3). Furthermore, the abutted plate 71 has a width that is slightly larger in the vertical direction than the diameter of the compression coil spring 61 and is configured to be able to effectively abut against the second elastic support means 6. The abutted plate 71 does not need to be configured by a single member, and may be configured to have a substantially circular shape in plan view by connecting a plurality of members.

上記のような構成であると、第２の弾性支持手段６は被当接板７１を介して本体２に当接するため、当接時の本体２への衝撃を和らげることができ、本体２の損傷を抑制することができる。また、第２の弾性支持手段６が曲面に当接することにより、外槽３が回転軸Ｒａ回りに揺動した場合でも、接触状態が不安定になることがなく均一な接触を保つことができるため、より好適に振動を抑制することが可能となる。さらには、被当接板７１の寸法や材質を適宜変更することにより、本体２と第２の弾性支持手段６との摩擦力を変更することもできるため、より振動抑制効果を高めることも可能である。   With the above configuration, since the second elastic support means 6 contacts the main body 2 via the contacted plate 71, the impact on the main body 2 at the time of contact can be reduced. Damage can be suppressed. Further, since the second elastic support means 6 is in contact with the curved surface, even when the outer tub 3 swings around the rotation axis Ra, the contact state does not become unstable, and uniform contact can be maintained. Therefore, it becomes possible to suppress vibration more suitably. Furthermore, since the frictional force between the main body 2 and the second elastic support means 6 can be changed by appropriately changing the size and material of the abutted plate 71, the vibration suppressing effect can be further enhanced. It is.

＜第２実施形態＞
図８（ａ）は、上述した第１実施形態における図２に対応するものであり、本発明の第２実施形態に係る洗濯機２０１（２０１Ａ）を示す横断面図である。後述する構成以外は第１実施形態（図１〜図５）に示した洗濯機１と同様であるため、同じ部分には同じ符号を付して説明を省略する。 Second Embodiment
FIG. 8A corresponds to FIG. 2 in the first embodiment described above, and is a cross-sectional view showing a washing machine 201 (201A) according to the second embodiment of the present invention. Since it is the same as that of the washing machine 1 shown in 1st Embodiment (FIGS. 1-5) except the structure mentioned later, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

図８（ａ）に示す洗濯機２０１は、第２の弾性支持手段６の配置、及び、外槽３の取付構造が第１実施形態の洗濯機１（図２参照）と異なる。   The washing machine 201 shown in FIG. 8A is different from the washing machine 1 of the first embodiment (see FIG. 2) in the arrangement of the second elastic support means 6 and the mounting structure of the outer tub 3.

具体的には、ｘ方向弾性支持手段６ｘとｙ方向弾性支持手段６ｙとは、これらを構成する弾性体としての圧縮コイルばね６１，６１ともども、一つずつ組をなして本体２における内部空間２ａの隅部２ａ１に近接するとともに、回転軸Ｒａを中心として双方の組が軸対称の位置に設けられる。   Specifically, the x-direction elastic support means 6x and the y-direction elastic support means 6y form a set of compression coil springs 61 and 61 as elastic bodies constituting them, and form an internal space 2a in the main body 2 one by one. The two sets are provided at positions that are axisymmetric about the rotation axis Ra.

図８（ｂ）は、図８（ａ）に示す洗濯機２０１の要部の拡大図である。図８（ｂ）に示すとおり、各組を構成するｘ方向弾性支持手段６ｘとｙ方向弾性支持手段６ｙは、外槽３の外面３２ａに設けた共通の台座２３６に取り付けられる。台座２３６は、ｘ方向に直交する取り付け面と、ｙ方向に直交する取り付け面を備え、それぞれにｘ方向弾性支持手段６ｘ又はｙ方向弾性支持手段６ｙが取り付けられる。そのため、各第２の弾性支持手段６ｘ，６ｙの位置関係を適切に設定し、部品点数を削減することができる。なお、この実施形態における第２の弾性支持手段６は、台座２３６への取り付けを適正に行うため、図３に示した基端部材６３に代えて、取り付け面が平坦な板状の基端部材２６３を備える。   FIG.8 (b) is an enlarged view of the principal part of the washing machine 201 shown to Fig.8 (a). As shown in FIG. 8 (b), the x-direction elastic support means 6 x and the y-direction elastic support means 6 y constituting each set are attached to a common base 236 provided on the outer surface 32 a of the outer tub 3. The pedestal 236 includes an attachment surface orthogonal to the x direction and an attachment surface orthogonal to the y direction, to which the x direction elastic support means 6x or the y direction elastic support means 6y is attached. Therefore, the positional relationship between the second elastic support means 6x and 6y can be set appropriately, and the number of parts can be reduced. Note that the second elastic support means 6 in this embodiment is a plate-like base end member with a flat mounting surface instead of the base end member 63 shown in FIG. 263.

また、各第２の弾性支持手段６と本体２の内面２１ａとは、それぞれ第１実施形態と同様、隙間Ｅを介して対向させる。   Further, each second elastic support means 6 and the inner surface 21a of the main body 2 are opposed to each other through a gap E, as in the first embodiment.

そのため、本実施形態は、上述した第１実施形態と同様の効果を有するとともに、第２の弾性支持手段６を、本体２内のデッドスペースになりがちな隅部２ａ１に近接して配置することで、スペースを有効に活用してより洗濯機２０１全体の小型化を実現することが可能となる。   Therefore, this embodiment has the same effect as the first embodiment described above, and the second elastic support means 6 is disposed in the vicinity of the corner 2a1 that tends to be a dead space in the main body 2. Thus, it is possible to effectively reduce the overall size of the washing machine 201 by effectively using the space.

さらには、外槽３が回転軸Ｒａ回りに振れ回り振動が生じなかった場合、換言すると外槽３がｘ，ｙ方向のいずれにも変位しなかった場合でも、外槽３が回転軸Ｒａ回りに揺動した場合には第２の弾性支持手段６の先端部材６４を本体２に当接させることができる。そのため、モータ３４の回転ムラやトルク脈動などの原因によって、回転軸Ｒａ回りに揺動する形態の振動が生じた場合でも、この振動を適正に抑制することができる。   Further, when the outer tub 3 does not swing around the rotation axis Ra, in other words, even when the outer tub 3 is not displaced in either the x or y direction, the outer tub 3 is rotated about the rotation axis Ra. When it is swung, the tip member 64 of the second elastic support means 6 can be brought into contact with the main body 2. Therefore, even when a vibration that swings around the rotation axis Ra occurs due to uneven rotation of the motor 34, torque pulsation, or the like, the vibration can be appropriately suppressed.

図９は、図８に示した第２実施形態に係る洗濯機２０１（２０１Ａ）の変形例を示す図である。後述する構成以外は図８に示した洗濯機２０１Ａと同様であるため、同じ部分には同じ符号を付して説明を省略する。   FIG. 9 is a view showing a modification of the washing machine 201 (201A) according to the second embodiment shown in FIG. Since it is the same as that of the washing machine 201A shown in FIG. 8 except for the configuration to be described later, the same portions are denoted by the same reference numerals and description thereof is omitted.

図９に示す洗濯機２０１Ｂは、本体２の内側に被当接ブロック２７１を備える点が図８に示す洗濯機２０１Ａと異なる。被当接ブロック２７１は、４つの第２の弾性支持手段６〜６と隙間Ｅ（図８参照）を介して対向する位置にそれぞれ設けられる。各被当接ブロック２７１は、取り付け面２７１ａは平面状に形成され、この取り付け面２７１ａを、本体２を構成する側板２１の内面２１ａに当接させた状態で固定されるとともに、第２の弾性支持手段６〜６と対向する側に被当接部としての被当接面２７１ｂを形成される。被当接面２７１ｂは、その中央付近を第２の弾性支持手段６の先端部材６４（図３参照）よりもやや幅の広い平面として、これより端部方向に進むに従って本体２の内側に向かって突出する曲面を滑らかに連続させて形成される。   The washing machine 201B shown in FIG. 9 is different from the washing machine 201A shown in FIG. 8 in that a contact block 271 is provided inside the main body 2. The abutted blocks 271 are respectively provided at positions facing the four second elastic support means 6 to 6 via a gap E (see FIG. 8). Each of the abutted blocks 271 has a mounting surface 271a formed in a flat shape, and is fixed in a state where the mounting surface 271a is in contact with the inner surface 21a of the side plate 21 constituting the main body 2, and the second elastic A contacted surface 271b as a contacted portion is formed on the side facing the support means 6-6. The contacted surface 271b is a plane having a slightly wider width than the tip member 64 (see FIG. 3) of the second elastic support means 6 in the vicinity of the center thereof, and proceeds toward the inside of the main body 2 as it advances in the end direction. It is formed by smoothly and continuously projecting curved surfaces.

上記のように構成した場合には、本体２を構成する側板２の保護を適切に図ることができるとともに、外槽３が回転軸Ｒａ回りに揺動した場合であっても、被当接面２７１ｂに曲面を含むことから、第２の弾性支持手段６との接触状態を均一化して、より好適に振動抑制効果を得ることができる。   When configured as described above, the side plate 2 constituting the main body 2 can be appropriately protected, and even if the outer tub 3 swings around the rotation axis Ra, the abutted surface Since 271b includes a curved surface, the contact state with the second elastic support means 6 can be made uniform, and a vibration suppressing effect can be obtained more suitably.

＜第３実施形態＞
図１０（ａ）は、上述した第１実施形態における図２に対応するものであり、本発明の第３実施形態に係る洗濯機３０１（３０１Ａ）を示す横断面図である。後述する構成以外は第１実施形態（図１〜図５）に示した洗濯機１と同様であるため、同じ部分には同じ符号を付して説明を省略する。 <Third Embodiment>
FIG. 10A corresponds to FIG. 2 in the first embodiment described above, and is a cross-sectional view showing a washing machine 301 (301A) according to the third embodiment of the present invention. Since it is the same as that of the washing machine 1 shown in 1st Embodiment (FIGS. 1-5) except the structure mentioned later, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

図１０（ａ）に示す洗濯機３０１は、第２の弾性支持手段３０６の構造、及び、この第２の弾性支持手段３０６と相対する被当接ブロック３７１を設けた点が第１実施形態の洗濯機１（図２参照）と異なる。第２の弾性支持手段３０６は、第１実施形態における第２の弾性支持手段６（図２参照）と構造は異なるが、外槽３に対して同じ位置に配置される。   The washing machine 301 shown in FIG. 10A is the first embodiment in that the structure of the second elastic support means 306 and the abutted block 371 opposite to the second elastic support means 306 are provided. Different from the washing machine 1 (see FIG. 2). The second elastic support means 306 is different in structure from the second elastic support means 6 (see FIG. 2) in the first embodiment, but is arranged at the same position with respect to the outer tub 3.

図１１は、第２の弾性支持手段３０６の構造を示す断面図である。この実施形態における第２の弾性支持手段３０６は、図１１（ａ）に示す弾性ユニット３０６Ａとして構成される。弾性ユニット３０６Ａは、一端が開放され他端に開口３６２ａが設けられたケース３６２と、本体２の内面２１ａ（図１０参照）に向かって凸状に形成され、ケース３６２の開口３６２ａより先端３６３ｂを突出させた当接部としての軸体３６３と、ケース３６２内に設ける弾性体としての圧縮コイルばね３６１Ａと、ケース３６２の他端を封止する基端部材３６４とから構成される。   FIG. 11 is a cross-sectional view showing the structure of the second elastic support means 306. The second elastic support means 306 in this embodiment is configured as an elastic unit 306A shown in FIG. The elastic unit 306A is formed in a convex shape toward the inner surface 21a (see FIG. 10) of the main body 2 with a case 362 having one end opened and an opening 362a at the other end, and has a tip 363b extending from the opening 362a of the case 362. A shaft body 363 as a protruding contact portion, a compression coil spring 361A as an elastic body provided in the case 362, and a base end member 364 that seals the other end of the case 362 are configured.

上記軸体３６３は、開口３６２ａよりもやや小さな断面形状を備えるとともに、基端側に開口３６２ａよりも大きな鍔部３６３ａを備える。軸体３６３の先端３６３ｂは半球面状に形成されており、被当接ブロック３７１（図１０参照）と滑らかに当接することができる。   The shaft body 363 has a slightly smaller cross-sectional shape than the opening 362a, and has a flange 363a larger than the opening 362a on the proximal end side. The tip 363b of the shaft body 363 is formed in a hemispherical shape, and can smoothly abut against the abutted block 371 (see FIG. 10).

圧縮コイルばね３６１Ａは、第１実施形態と同様に与圧Ｆｐ（図３参照）を与えられた状態で収容され、基端部材３６４によって封止される。さらに、弾性ユニット３０６Ａは、この基端部材３６４が外槽３の外面３２ａに取り付けられることで外槽３に固定される。こうすることで、圧縮コイルばね３６１Ａは、一端が基端部材３６４を介して外槽３の外面３２ａに接続され、他端に上記軸体３６３を設けられる。   The compression coil spring 361 </ b> A is accommodated in a state where a pressurizing force Fp (see FIG. 3) is applied as in the first embodiment, and is sealed by the base end member 364. Further, the elastic unit 306 </ b> A is fixed to the outer tub 3 by attaching the base end member 364 to the outer surface 32 a of the outer tub 3. By doing so, one end of the compression coil spring 361A is connected to the outer surface 32a of the outer tub 3 through the base end member 364, and the shaft body 363 is provided at the other end.

軸体３６３は、圧縮コイルばね３６１Ａにより先端３６３ｂが突出する方向に付勢され、鍔部３６３ａがケース３６２の端部に係止されることでそれ以上の突出が禁止される。すなわち、ケース３６２は、圧縮コイルばね３６１Ａに与圧を与えた状態を基準として、この圧縮コイルばね３６１Ａ先端の圧縮方向への変位を許容し、伸長方向への変位を規制する変位規制手段として機能する。   The shaft body 363 is urged by the compression coil spring 361 </ b> A in the direction in which the tip 363 b protrudes, and the protrusion 363 a is locked to the end of the case 362, thereby preventing further protrusion. That is, the case 362 functions as a displacement restricting means that allows the displacement of the tip of the compression coil spring 361A in the compression direction and restricts the displacement in the extension direction with reference to the state in which the compression coil spring 361A is pressurized. To do.

この状態より、図１１（ｂ）に示すとおり、軸体３６３の先端３６３ｂを軸方向に押し込んだ場合には、ケース３６２による規制が解除され、軸体３６３に対して与圧ＦＰ以上のばね力が作用する。   In this state, as shown in FIG. 11B, when the tip 363b of the shaft body 363 is pushed in the axial direction, the restriction by the case 362 is released, and the spring force greater than the pressurization pressure FP is exerted on the shaft body 363. Act.

なお、第２の弾性支持手段３０６は、図１１（ａ），（ｂ）に示す圧縮コイルばね３６１Ａを備える弾性ユニット３０６Ａのみならず、図１１（ｃ），（ｄ）に示す弾性部材３６１Ｂを備える弾性ユニット３０６Ｂとして構成してもよい。弾性部材３６１Ｂは、圧縮コイルばね３６１Ａと同様、圧縮することにより反力を生じる性質を持つものであればよく、ゴムや発泡スポンジなどであってもよい。さらには、金属や樹脂の切削加工を行った際に生ずる切削くずを弾性部材３６１Ｂとして用いてもよい。   The second elastic support means 306 includes not only the elastic unit 306A including the compression coil spring 361A shown in FIGS. 11 (a) and 11 (b) but also the elastic member 361B shown in FIGS. 11 (c) and 11 (d). You may comprise as the elastic unit 306B provided. Similar to the compression coil spring 361A, the elastic member 361B only needs to have a property of generating a reaction force by being compressed, and may be rubber, foamed sponge, or the like. Furthermore, cutting waste generated when metal or resin is cut may be used as the elastic member 361B.

図１０（ａ）に戻って、上記のとおり弾性ユニット３０６Ａ（図１１参照）により構成した第２の弾性支持手段３０６は、外槽３を挟んでｘ方向に離間した２箇所、さらには外槽３を挟んでｙ方向に離間した２箇所に設けられる。すなわち、第２の弾性支持手段３０６は、平面視において回転軸Ｒａを中心とする十文字をなす位置に配される。さらに、第２の弾性支持手段３０６と相対する位置に、それぞれ被当接ブロック３７１が配され、本体２を構成する側板２１の内面２１ａに固定される。   Returning to FIG. 10 (a), the second elastic support means 306 constituted by the elastic unit 306A (see FIG. 11) as described above has two locations separated in the x direction across the outer tank 3, and further the outer tank. 3 are provided at two locations that are spaced apart in the y direction with 3 interposed therebetween. That is, the second elastic support means 306 is arranged at a position that forms a cross shape with the rotation axis Ra as the center in plan view. Further, the abutted blocks 371 are arranged at positions facing the second elastic support means 306 and fixed to the inner surface 21 a of the side plate 21 constituting the main body 2.

図１０（ｂ）は、被当接ブロック３７１と弾性ユニット３０６Ａとの位置関係を示す図である。被当接ブロック３７１は、弾性ユニット３０６Ａを構成する軸体３６３の先端３６３ｂを通り、回転軸Ｒａと平行な軸心を中心とする平面視円弧状の曲面により構成される被当接部としての被当接面３７１ａを備える。洗濯機３０１が停止した安定状態では、被当接面３７１ａのいずれの箇所においても、軸体３６３の先端３６３ｂからの距離ｄがほぼ等しくなる。距離ｄは、上述した第１実施形態における隙間Ｅ（図３参照）に相当し、この隙間Ｅの分だけ外槽３が変位することで、被当接面３７１ａに対して弾性ユニット３０６Ａが当接する。さらに、被当接面３７１ａが軸体３６３の先端３６３ｂを中心とする曲面をなすので、図１０（ｃ）に示すとおり、軸体３６３の先端３６３ｂが元の位置を基準として振れ回る態様で変位した場合には、両者を滑らかに当接させることができる。   FIG. 10B is a diagram showing a positional relationship between the abutted block 371 and the elastic unit 306A. The abutted block 371 passes through the tip 363b of the shaft body 363 constituting the elastic unit 306A, and serves as a to-be-abutted portion constituted by a curved surface having an arc shape in plan view with an axis parallel to the rotation axis Ra as the center. A contacted surface 371a is provided. In a stable state where the washing machine 301 is stopped, the distance d from the tip 363b of the shaft body 363 is substantially equal at any location on the abutted surface 371a. The distance d corresponds to the gap E (see FIG. 3) in the first embodiment described above, and the outer tub 3 is displaced by the gap E, so that the elastic unit 306A touches the contacted surface 371a. Touch. Further, since the abutted surface 371a forms a curved surface centered on the tip 363b of the shaft body 363, the tip 363b of the shaft body 363 is displaced in a manner that swings around the original position as shown in FIG. 10C. In this case, both can be brought into contact smoothly.

従って、本実施形態では、上述した第１実施形態と同様の効果を有するとともに、外槽３の振れ回り振動が生じた場合には、弾性ユニット３０６Ａを構成する軸体３６３の先端３６３ｂと被当接部である被当接面３７１ａとを滑らかに当接させ、好適に振動を低減させることができる。   Therefore, the present embodiment has the same effect as that of the first embodiment described above, and when the whirling vibration of the outer tub 3 occurs, the front end 363b of the shaft body 363 constituting the elastic unit 306A and the contacted portion The contacted surface 371a, which is a contact portion, can be smoothly brought into contact with each other, so that vibration can be suitably reduced.

図１２は、図１０に示した第３実施形態に係る洗濯機３０１（３０１Ａ）の変形例を示す図である。後述する構成以外は図１０に示した洗濯機３０１Ａと同様であるため、同じ部分には同じ符号を付して説明を省略する。   FIG. 12 is a view showing a modification of the washing machine 301 (301A) according to the third embodiment shown in FIG. Since it is the same as that of the washing machine 301A shown in FIG. 10 except for the configuration to be described later, the same portions are denoted by the same reference numerals and description thereof is omitted.

図１２に示す洗濯機３０１Ｂは、第２の弾性支持手段３０６として弾性ユニット３０６Ａ（図１１参照）を備えるものでありながら、第２実施形態の洗濯機２０１Ａ，２０１Ｂ（図８，９参照）と同様に構成されたものである。具体的には、洗濯機３０１Ｂは、ｘ方向に沿って配置する弾性ユニット３０６ｘと、ｙ方向弾性ユニット３０６ｙとが一つずつ組をなして本体２の内部空間２ａの隅部２ａ１に配置される。また、これら弾性ユニット３０６ｘとｙ方向弾性ユニット３０６ｙとは、外槽３の外面３２ａに設けた共通の台座２３６に取り付けられることで、適切な位置に配置される。さらに、これらの弾性ユニット３０６ｘ，３０６ｙと、第１実施形態における隙間Ｅ（図３参照）に相当する隙間ｄ（図１０参照）を介在させて相対する位置に、被当接ブロック３７１がそれぞれ設けられる。   A washing machine 301B shown in FIG. 12 includes an elastic unit 306A (see FIG. 11) as the second elastic support means 306, and the washing machines 201A and 201B (see FIGS. 8 and 9) of the second embodiment. It is constituted similarly. Specifically, in the washing machine 301B, the elastic unit 306x and the y-direction elastic unit 306y arranged along the x direction form a pair and are arranged at the corner 2a1 of the internal space 2a of the main body 2. . In addition, the elastic unit 306x and the y-direction elastic unit 306y are arranged at appropriate positions by being attached to a common base 236 provided on the outer surface 32a of the outer tub 3. Further, the abutted blocks 371 are provided at positions facing each other through the elastic units 306x and 306y and a gap d (see FIG. 10) corresponding to the gap E (see FIG. 3) in the first embodiment. It is done.

このように構成した場合には、上述した効果を得ることができるとともに、第２実施形態と同様に、回転軸Ｒａ回りに揺動する形態の振動が生じた場合でも、この振動を適正に抑制することができる。また、第２の弾性支持手段３０６を弾性ユニット３０６Ａ（図１１参照）として構成していることから、部品の取り扱いが容易となり、組立工数の削減や小型化を実現することもできる。   When configured in this way, the above-described effects can be obtained, and, similarly to the second embodiment, even when a vibration that swings around the rotation axis Ra occurs, the vibration is appropriately suppressed. can do. In addition, since the second elastic support means 306 is configured as the elastic unit 306A (see FIG. 11), handling of the components is facilitated, and the number of assembly steps can be reduced and the size can be reduced.

＜第４実施形態＞
図１３は、上述した第１実施形態に対応するものであり、本発明の第４実施形態に係る洗濯機４０１（４０１Ａ）を示す横断面図である。後述する構成以外は第２実施形態（図８参照）に示した洗濯機２０１と同様であるため、同じ部分には同じ符号を付して説明を省略する。 <Fourth embodiment>
FIG. 13 corresponds to the above-described first embodiment and is a cross-sectional view showing a washing machine 401 (401A) according to the fourth embodiment of the present invention. Since it is the same as that of the washing machine 201 shown in 2nd Embodiment (refer FIG. 8) except the structure mentioned later, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

図１３（ａ）に示す洗濯機４０１は、第２の弾性支持手段としてのｘ方向弾性支持手段６ｘとｙ方向弾性支持手段６ｙの先端に当接部としての曲面板４８１が設けられるとともに、この曲面板４８１と相対する被当接ブロック４７１が本体２に設けられた点が第２実施形態の洗濯機２０１（図８参照）と異なる。   A washing machine 401 shown in FIG. 13A is provided with a curved plate 481 as an abutting portion at the tips of x-direction elastic support means 6x and y-direction elastic support means 6y as second elastic support means. The point to which the to-be-contacted block 471 facing the curved plate 481 is provided in the main body 2 is different from the washing machine 201 of the second embodiment (see FIG. 8).

曲面板４８１は、平面視円弧状であり、樹脂または金属製の薄板で形成された帯状部材である。この曲面板４８１により、一個のｘ方向弾性支持手段６ｘの先端と、これに近接する一個のｙ方向弾性支持手段６ｙの先端とが接続される。すなわち、これらの弾性支持手段６ｘ，６ｙを構成する弾性体としての圧縮コイルばね６１，６１は、それぞれ一端６１ａを外槽３の外面３２ａに接続されるとともに、他端６１ｂ同士を曲面板４８１により接続される。また、ｘ方向弾性支持手段６ｘの軸心を通る直線と、ｙ方向弾性支持手段６ｘの軸心を通る直線との交点を通過する、ｚ軸に平行な軸心Ｃｃ（図１３（ｂ），（ｃ）参照）を中心として、上記曲面板４８１のなす円弧の位置は設定される。この曲面板４８１は、回転軸Ｒａを中心として対称の位置に配置される、別の組のｘ方向弾性支持手段６ｘとｙ方向弾性支持手段６ｙの先端にも同様に設けられる。   The curved plate 481 has a circular arc shape in plan view, and is a belt-like member formed of a thin plate made of resin or metal. The curved plate 481 connects the tip of one x-direction elastic support means 6x and the tip of one y-direction elastic support means 6y adjacent thereto. That is, the compression coil springs 61 and 61 as elastic bodies constituting these elastic support means 6x and 6y have one end 61a connected to the outer surface 32a of the outer tub 3 and the other end 61b connected to each other by a curved plate 481. Connected. Further, an axis Cc parallel to the z-axis passing through the intersection of a straight line passing through the axis of the x-direction elastic support means 6x and a straight line passing through the axis of the y-direction elastic support means 6x (FIG. 13 (b), The position of the circular arc formed by the curved plate 481 is set centering on (c). This curved plate 481 is similarly provided at the tip of another set of the x-direction elastic support means 6x and the y-direction elastic support means 6y, which are arranged at symmetrical positions around the rotation axis Ra.

被当接ブロック４７１は、上記曲面板４８１と対向するブロック状に構成され、本体２の内部空間２ａの隅部２ａ１に設けられる。なお，被当接部４７１も、回転軸Ｒａを中心とした対称となる２箇所に配置される。被当接ブロック４７１は、円弧状の凹曲面として形成された、上記の曲面板４８１と対向する被当接部としての被当接面４７１ａを備える。被当接面４７１と曲面板４８１とは、洗濯機４０１が停止した安定状態において、同じ軸心Ｃｃを中心に配置される。そのため、曲面板４８１と被当接面４７１ａとが対向する範囲において、両者の隙間Ｅ（図３参照）は何れの方向においてもほぼ均一になる。なお、曲面板４８１及び被当接ブロック４７１の被当接面４７１ａのなす円弧の角度は、１２０°付近に設定され、この範囲で両者は当接することができる。   The abutted block 471 is configured in a block shape facing the curved plate 481, and is provided in the corner 2 a 1 of the internal space 2 a of the main body 2. Note that the abutted portion 471 is also arranged at two symmetrical positions with respect to the rotation axis Ra. The contacted block 471 includes a contacted surface 471a as a contacted part facing the curved plate 481 formed as an arcuate concave curved surface. The contacted surface 471 and the curved plate 481 are disposed around the same axis Cc in a stable state where the washing machine 401 is stopped. Therefore, in the range where the curved plate 481 and the contacted surface 471a face each other, the gap E between them (see FIG. 3) becomes substantially uniform in any direction. The angle of the arc formed by the curved plate 481 and the abutted surface 471a of the abutted block 471 is set near 120 °, and both can abut within this range.

上記のとおり構成されることで、図１３（ｂ）に示すように、図中上方向に外槽３が変位した場合であっても、図１３（ｃ）に示すように図中左上方向に外槽３が変位した場合であっても、同じ変位量であれば、曲面板４８１は被当接ブロック４７１に当接することができる。そのため、外槽３が振れ回り振動している間、曲面板４８１を介して適切に圧縮コイルばね６１を作用させることができる。   By being configured as described above, as shown in FIG. 13B, even when the outer tub 3 is displaced in the upward direction in the figure, as shown in FIG. 13C, in the upper left direction in the figure. Even if the outer tub 3 is displaced, the curved plate 481 can abut on the abutted block 471 as long as the displacement is the same. Therefore, the compression coil spring 61 can be appropriately applied via the curved plate 481 while the outer tub 3 vibrates around.

従って、本実施形態では、上述した第１実施形態と同様の効果を有するとともに、外槽３の振れ回り振動が生じた場合には、本体２に設けた被当接ブロック４７１に第２の弾性支持手段６に設けた曲面板４８１と当接させることで、適切に圧縮コイルばね６１を作用させ、好適に振動を低減させることができる。さらに、曲面板４８１を通じて、方向の異なるｘ方向弾性支持手段６ｘとｙ方向弾性支持手段６ｙとが接続されていることから、外槽３の変位する方向の変化に応じて作用する第２の弾性支持手段６を滑らかに切り替えることができる。そのため、より好適に振動を抑制することが可能となっている。   Therefore, this embodiment has the same effect as that of the first embodiment described above, and the second elastic block is applied to the contacted block 471 provided in the main body 2 when the vibration of the outer tub 3 occurs. By making contact with the curved plate 481 provided on the support means 6, the compression coil spring 61 can be appropriately acted and vibrations can be suitably reduced. Further, since the x-direction elastic support means 6x and the y-direction elastic support means 6y having different directions are connected through the curved plate 481, the second elasticity acting in accordance with the change in the direction in which the outer tub 3 is displaced. The support means 6 can be switched smoothly. Therefore, it is possible to suppress vibration more suitably.

図１４は、図１３に示した第４実施形態に係る洗濯機４０１（４０１Ａ）の第１変形例を示す図である。後述する構成以外は図１３に示した洗濯機４０１Ａと同様であるため、同じ部分には同じ符号を付して説明を省略する。   FIG. 14 is a view showing a first modification of the washing machine 401 (401A) according to the fourth embodiment shown in FIG. Since it is the same as that of the washing machine 401A shown in FIG. 13 except the structure mentioned later, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

図１４に示す洗濯機４０１Ｂは、図１３に示す洗濯機４０１とは異なる形状の曲面板４８２、及び、被当接ブロック４７２を備えるものである。曲面板４８２は、図１３における曲面板４８１と同じ位置に設けられるものの、円弧のなす角度は約１８０°に拡大される。同様に、被当接ブロック４７２も、図１３における被当接ブロック４７１と同じ位置に設けられるものの、被当接面４７２ａのなす角度は約１８０°に拡大される。   A washing machine 401B shown in FIG. 14 includes a curved plate 482 having a shape different from that of the washing machine 401 shown in FIG. The curved plate 482 is provided at the same position as the curved plate 481 in FIG. 13, but the angle formed by the arc is enlarged to about 180 °. Similarly, the abutted block 472 is also provided at the same position as the abutted block 471 in FIG. 13, but the angle formed by the abutted surface 472a is expanded to about 180 °.

そのため、洗濯機４０１Ｂは、２箇所に設けた曲面板４８２と被当接ブロック４７２とによって、回転軸Ｒａを中心とする合計３６０°の方向への変位を規制することができ、いずれの方向に対しても同じ変位量で当接させることができる。従って、上記の効果を更に高め、より滑らかに各方向の圧縮コイルばね６１を作用させることができ、一層好適に振動を低減することができる。   Therefore, the washing machine 401B can regulate displacement in the direction of 360 ° in total around the rotation axis Ra by the curved plate 482 and the contacted block 472 provided in two places, and in any direction Even in this case, they can be brought into contact with the same amount of displacement. Therefore, the above effect can be further enhanced, the compression coil spring 61 in each direction can be acted more smoothly, and vibration can be reduced more suitably.

図１５は、図１３に示した第４実施形態に係る洗濯機４０１（４０１Ａ）の第２変形例を示す図である。後述する構成以外は図１３に示した洗濯機４０１Ａと同様であるため、同じ部分には同じ符号を付して説明を省略する。   FIG. 15 is a view showing a second modification of the washing machine 401 (401A) according to the fourth embodiment shown in FIG. Since it is the same as that of the washing machine 401A shown in FIG. 13 except the structure mentioned later, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

図１５に示す洗濯機４０１Ｃは、図１３に示す洗濯機４０１とは同じ形状の曲面板４８１及び被当接ブロック４７１が２箇所ではなく４箇所に設けられる。各曲面板４８１及びこれに対向する被当接ブロック４７１は、それぞれ本体２の隅部２ａ１に配置される。さらに、ｘ方向弾性支持手段６ｘ及びｙ方向弾性支持手段６ｙは、曲面板４８１に対応する個数分設けられる。   The washing machine 401C shown in FIG. 15 is provided with the curved plate 481 and the contact block 471 having the same shape as the washing machine 401 shown in FIG. Each curved plate 481 and the abutted block 471 opposite to the curved plate 481 are respectively arranged at the corner 2a1 of the main body 2. Further, the x-direction elastic support means 6x and the y-direction elastic support means 6y are provided by the number corresponding to the curved plate 481.

上述したとおり、曲面板４８１及び被当接ブロック４７１のなす円弧の角度は１２０°付近に設定されるため、４箇所のものを合計することで３６０°以上の方向をカバーすることができる。そのため、いずれの方向に対しても同じ変位量で当接させることができることから、上述した第１変形例と同様、より滑らかに各方向の圧縮コイルばね６１を作用させることができ、好適に振動を低減することが可能となる。   As described above, since the angle of the arc formed by the curved plate 481 and the contacted block 471 is set near 120 °, a total of four locations can cover a direction of 360 ° or more. Therefore, since it can be contacted with the same amount of displacement in any direction, the compression coil spring 61 in each direction can be applied more smoothly as in the above-described first modification, and vibration is preferably performed. Can be reduced.

図１６は、図１３に示した第４実施形態に係る洗濯機４０１（４０１Ａ）の第３変形例を示す図である。後述する構成以外は図１３に示した洗濯機４０１Ａと同様であるため、同じ部分には同じ符号を付して説明を省略する。   FIG. 16 is a diagram illustrating a third modification of the washing machine 401 (401A) according to the fourth embodiment illustrated in FIG. Since it is the same as that of the washing machine 401A shown in FIG. 13 except the structure mentioned later, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

図１６に示す洗濯機４０１Ｄは、図１３に示す洗濯機４０１と同じ形状の曲面板４８１及び被当接ブロック４７１を備えるが、第２の弾性支持手段３０６として、第３実施形態における弾性ユニット３０６Ａ（図１０，１１参照）を用いる構成が図１３に示す洗濯機４０１と異なる。そのため、上記と同様の効果を得ることができるとともに、ユニット化による組立工数の削減や、小型化を実現することができる。   A washing machine 401D shown in FIG. 16 includes a curved plate 481 and a contact block 471 having the same shape as the washing machine 401 shown in FIG. 13, but the second elastic support means 306 is an elastic unit 306A in the third embodiment. (See FIGS. 10 and 11) is different from the washing machine 401 shown in FIG. Therefore, the same effects as described above can be obtained, and the number of assembling steps can be reduced and the size can be reduced by unitization.

＜第５実施形態＞
図１７（ａ）は、上述した第１実施形態における図２に対応するものであり、本発明の第５実施形態に係る洗濯機５０１を示す横断面図である。後述する構成以外は第１実施形態（図１〜図５）に示した洗濯機１と同様であるため、同じ部分には同じ符号を付して説明を省略する。 <Fifth Embodiment>
FIG. 17A corresponds to FIG. 2 in the first embodiment described above, and is a cross-sectional view showing a washing machine 501 according to the fifth embodiment of the present invention. Since it is the same as that of the washing machine 1 shown in 1st Embodiment (FIGS. 1-5) except the structure mentioned later, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

図１７（ａ）に示す洗濯機５０１は、第２の弾性支持手段６の先端に外槽３と同軸に配された当接部として円環状の規制部材５８１を設け、これと対向させるべく本体２に被当接板７１を設けた点が第１実施形態の洗濯機１（図２参照）とで異なる。被当接板７１は、上述した第１実施形態の第２変形例（図７参照）と同じように構成する。   The washing machine 501 shown in FIG. 17A is provided with an annular regulating member 581 as an abutting portion arranged coaxially with the outer tub 3 at the tip of the second elastic support means 6, and a main body to face this. 2 is different from the washing machine 1 (see FIG. 2) of the first embodiment in that a contact plate 71 is provided. The abutted plate 71 is configured in the same manner as the second modified example (see FIG. 7) of the first embodiment described above.

図１７（ｂ）は、規制部材５８１の形状を説明するための斜視図である。規制部材５８１は、円環状の上板５８１ａと、その下方に平行に配された円環状の下板５８１ｂと、これらの外周側を接続する側板５８１ｃとによって構成され、ｚ方向に平行な平面によって切断した際の断面は内側に向かって開口するコ字形となる。   FIG. 17B is a perspective view for explaining the shape of the regulating member 581. The restricting member 581 includes an annular upper plate 581a, an annular lower plate 581b arranged in parallel below the annular member, and a side plate 581c connecting these outer peripheral sides, and is formed by a plane parallel to the z direction. The cross section at the time of cutting becomes a U shape opening toward the inside.

各弾性支持手段６を構成する圧縮コイルばね６１は、一端６１ａを外槽３の外面３２ａ（図３参照）に接続され、先端をなす他端６１ｂを規制部材５８１の内側に収容されることで規制部材５８１に接続される。各圧縮コイルばね６１は、他端６１ｂが側板５８１ｃと固定されていないので、規制部材５８１が各圧縮コイルばね６１を圧縮する方向に変位した場合にのみ変形する。   The compression coil spring 61 constituting each elastic support means 6 has one end 61 a connected to the outer surface 32 a (see FIG. 3) of the outer tub 3, and the other end 61 b forming the tip is accommodated inside the regulating member 581. Connected to the regulating member 581. Each compression coil spring 61 is deformed only when the regulating member 581 is displaced in a direction in which each compression coil spring 61 is compressed because the other end 61b is not fixed to the side plate 581c.

洗濯機５０１は、規制部材５８１と被当接板７１とが同心状に配置され、回転軸Ｒａを中心とするいずれの方向に対しても、第１実施形態における隙間Ｅ（図３参照）に相当する均一な隙間が設定されることにより、同じ変位量である限り、外槽３がいずれの方向に変位した場合でも、適切に規制部材５８１と被当接板７１とを接触させることができる。そして、規制部材５８１を介して、第２の弾性支持手段６を構成する圧縮コイルばね６１を圧縮して変形させることができる。さらに、共通の規制部材５８１を介して変形を生ずることで、外槽３の変位方向の変化に応じて、作用する第２の弾性支持手段６を滑らかに変化させることができる。そのため、外槽３が振れ回った際に、その振動をより滑らかに低減させることができる。   In the washing machine 501, the regulating member 581 and the abutted plate 71 are arranged concentrically, and the gap E in the first embodiment (see FIG. 3) is formed in any direction around the rotation axis Ra. By setting the corresponding uniform gap, as long as the displacement amount is the same, the regulating member 581 and the abutted plate 71 can be appropriately brought into contact with each other even when the outer tub 3 is displaced in any direction. . And the compression coil spring 61 which comprises the 2nd elastic support means 6 can be compressed and deformed via the regulating member 581. Furthermore, by causing the deformation through the common regulating member 581, the acting second elastic support means 6 can be smoothly changed according to the change in the displacement direction of the outer tub 3. Therefore, when the outer tub 3 is swung around, the vibration can be reduced more smoothly.

以上、本発明の実施形態について説明したが、各部の具体的な構成は、上述した実施形態のみに限定されるものではない。   As mentioned above, although embodiment of this invention was described, the specific structure of each part is not limited only to embodiment mentioned above.

例えば、上述の実施形態では、第２の弾性支持手段６（３０６）を、これを構成する圧縮コイルばね６１（３６１Ａ）ともどもｘ方向又はｙ方向に沿って設け、ｘｙ平面内で互いに直交させて配置したが、これらによって得られる合力が中心方向になる限り、上記の方向とすることは必須ではない。すなわち、各第２の弾性支持手段６（３０６）は、回転軸Ｒａに交差するとともに、互いに交差する方向に配置するのみで足りる。さらには、第２の弾性支持手段６（３０６）を４箇所に設けることも必須とはいえず、最低３箇所に設けるのみでも足りる。また、ｘｙ平面に沿って配置することも必須ではなく、若干上方または下方を向くなど、ｚ方向の成分を含む斜め方向に配置してもよい。   For example, in the above-described embodiment, the second elastic support means 6 (306) is provided along the x direction or the y direction together with the compression coil spring 61 (361A) constituting the second elastic support means 6 (306), and is orthogonal to each other in the xy plane. Although it arrange | positioned, as long as the resultant force obtained by these becomes a center direction, it is not essential to set it as said direction. That is, the second elastic support means 6 (306) need only be arranged in a direction intersecting the rotation axis Ra and intersecting each other. Furthermore, it is not essential to provide the second elastic support means 6 (306) in four places, and it is sufficient to provide them in at least three places. Moreover, it is not essential to arrange along the xy plane, and it may be arranged in an oblique direction including a component in the z direction such as slightly upward or downward.

さらに、上述の実施形態では、外槽３が内部で支持する内槽を洗濯脱水槽４として構成したが、本発明は内槽の高速回転が必要な場合には好適に利用することができ、内槽が単なる洗濯槽あるいは脱水槽であっても上記の構成を適用することができる。   Furthermore, in the above-described embodiment, the inner tub supported by the outer tub 3 is configured as the washing / dehydrating tub 4, but the present invention can be suitably used when high speed rotation of the inner tub is required, The above configuration can be applied even if the inner tub is a simple washing tub or a dehydration tub.

加えて、上述の実施形態では、外槽３の軸方向がｚ方向、すなわち垂直方向を向くようにしたが、斜め上方を向く形態であっても同様に本発明を適用することができる。また、外槽３の軸方向が水平方向となるドラム型洗濯機であっても、本発明を好適に利用することができる。   In addition, in the above-described embodiment, the axial direction of the outer tub 3 is directed in the z direction, that is, the vertical direction, but the present invention can be similarly applied to a configuration in which the axial direction is directed obliquely upward. Moreover, even if it is a drum type washing machine with which the axial direction of the outer tub 3 becomes a horizontal direction, this invention can be utilized suitably.

２…本体
２ａ…内部空間
２ａ１…隅部
３…外槽
４…洗濯脱水槽（内槽）
５…弾性支持手段
２１ａ…（本体の）内面
３２ａ…（外槽の）外面
３４…モータ
５１…吊棒
６１…圧縮コイルばね（弾性体）
６１ａ…（圧縮コイルばねの）一端
６１ｂ…（圧縮コイルばねの）他端
６２…規制紐（変位規制手段）
３６１Ａ…圧縮コイルばね（弾性体）
３６１Ｂ…弾性部材（弾性体）
３６２…ケース（変位規制手段）
３６３…軸体（当接部）
３６３ｂ…（軸体の）先端
３７１ａ…被当接面（被当接部）
４７１ａ…被当接面（被当接部）
４８１…曲面板（当接部）
５８１…規制部材（当接部）
Ｃｃ…軸心
Ｅ…隙間
Ｆｐ…与圧
Ｒａ…回転軸 2 ... Body 2a ... Internal space 2a1 ... Corner 3 ... Outer tub 4 ... Laundry dewatering tub (inner tub)
DESCRIPTION OF SYMBOLS 5 ... Elastic support means 21a ... (Inside of main body) 32a ... Outer surface (outside tank) 34 ... Motor 51 ... Hanging rod 61 ... Compression coil spring (elastic body)
61a ... one end of the compression coil spring 61b ... the other end of the compression coil spring 62 ... restriction string (displacement restriction means)
361A: Compression coil spring (elastic body)
361B ... Elastic member (elastic body)
362. Case (displacement restricting means)
363 ... Shaft body (contact portion)
363b ... tip of shaft 371a ... contacted surface (contacted portion)
471a: Abutted surface (abutted part)
481 ... Curved surface plate (contact portion)
581: Restricting member (contact portion)
Cc ... Axis center E ... Gap Fp ... Pressure Ra ... Rotating shaft

Claims (6)

内部空間を形成された本体と、当該本体の内部空間に配置された外槽と、当該外槽の内部に配置され回転自在に支持された内槽と、前記外槽に設けられて前記内槽を回転させるモータと、前記本体に対して前記外槽を弾性的に支持する弾性支持手段とを備えるものにおいて、
前記外槽と前記本体との間で前記内槽の回転軸回りの複数箇所に配され、圧縮により与圧を与えた状態で一端を前記外槽の外面に接続するとともに他端を前記本体の内面に隙間を介して対向させた弾性体と、前記与圧を与えた状態を基準として前記他端の圧縮方向への変位を許容し伸長方向への変位を規制する変位規制手段とを設けたことを特徴とする洗濯機。 A main body in which an internal space is formed, an outer tub disposed in the inner space of the main body, an inner tub disposed in the outer tub and rotatably supported, and the inner tub provided in the outer tub A motor that rotates the outer tub and elastic support means that elastically supports the outer tub with respect to the main body.
Between the outer tub and the main body, it is arranged at a plurality of locations around the rotation axis of the inner tub, and one end is connected to the outer surface of the outer tub while being pressurized by compression and the other end is connected to the main body. There is provided an elastic body opposed to the inner surface through a gap, and a displacement regulating means for permitting displacement in the compression direction of the other end and regulating displacement in the extension direction with reference to the state where the pressure is applied. A washing machine characterized by that. 前記弾性体を、前記回転軸に交差する第１方向に沿って前記外槽を挟んで少なくとも一対設けるとともに、前記回転軸及び前記第１方向に交差する第２方向に沿って前記外槽を挟んで少なくとも一対設けたことを特徴とする請求項１記載の洗濯機   At least a pair of the elastic bodies are provided across the outer tank along a first direction intersecting the rotation axis, and the outer tank is sandwiched along a second direction intersecting the rotation axis and the first direction. 2. The washing machine according to claim 1, wherein at least a pair is provided. 前記本体に形成した内部空間が略直方体状をなすとともに、前記外槽が略有底円筒形状をなしており、前記第１方向に沿って設けた弾性体と前記第２方向に沿って設けた弾性体とは各々一つずつ組をなし、前記内部空間の隅部に近接して設けられることを特徴とする請求項２記載の洗濯機。   The inner space formed in the main body has a substantially rectangular parallelepiped shape, and the outer tub has a substantially bottomed cylindrical shape, and is provided along the elastic body provided along the first direction and the second direction. The washing machine according to claim 2, wherein each of the elastic bodies forms a pair and is provided close to a corner of the internal space. 前記弾性体の前記他端に前記本体の内面に向かって凸状に形成した当接部を設けるとともに、当該当接部の先端を通り前記回転軸と平行な軸心を中心とする円弧状に形成した被当接部を前記本体の内面に設け、前記当接部と前記被当接部を対向させたことを特徴とする請求項１〜３の何れかに記載の洗濯機。   Provided at the other end of the elastic body is an abutting portion that is convex toward the inner surface of the main body, and has an arc shape that passes through the tip of the abutting portion and is centered on an axis parallel to the rotation axis. The washing machine according to any one of claims 1 to 3, wherein the formed contacted part is provided on an inner surface of the main body, and the contacted part and the contacted part are opposed to each other. 前記弾性体の前記他端に前記回転軸と平行な軸心を中心とする円弧状に形成した当接部を設けるとともに、当該当接部と同一の軸心を中心とする円弧状に形成した被当接部を前記本体の内面に設け、前記当接部と前記被当接部とを対向させたことを特徴とする請求項１〜３の何れかに記載の洗濯機。   An abutting portion formed in an arc shape centered on an axis parallel to the rotation axis is provided at the other end of the elastic body, and an arc shape centered on the same axis as the abutting portion is formed. The washing machine according to any one of claims 1 to 3, wherein a contact portion is provided on an inner surface of the main body, and the contact portion and the contact portion are opposed to each other. 前記当接部に対して、少なくとも２つの弾性体の前記他端を接続したことを特徴とする請求項５記載の洗濯機。   The washing machine according to claim 5, wherein the other ends of at least two elastic bodies are connected to the contact portion.
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