JP4539350B2 - Washing machine - Google Patents

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JP4539350B2
JP4539350B2 JP2005026054A JP2005026054A JP4539350B2 JP 4539350 B2 JP4539350 B2 JP 4539350B2 JP 2005026054 A JP2005026054 A JP 2005026054A JP 2005026054 A JP2005026054 A JP 2005026054A JP 4539350 B2 JP4539350 B2 JP 4539350B2
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outer tub
washing machine
vibration
tub
washing
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JP2006212118A (en
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俊成 松本
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、洗濯機本体内に弾性的に支持した外槽内に回転自在に配設した洗濯兼脱水槽内で洗濯物の洗濯、すすぎ、脱水を行う洗濯機に関するものである。   The present invention relates to a washing machine that performs washing, rinsing, and dehydration of laundry in a washing and dewatering tub that is rotatably disposed in an outer tub elastically supported in a washing machine body.

従来、この種の洗濯機は、衣類の偏心荷重による脱水時の外槽の振動を抑えるために外槽の振動量を弾性支持部で検出して衣類の偏心荷重を補正していた（例えば、特許文献１参照）。   Conventionally, this type of washing machine has corrected the eccentric load of the garment by detecting the vibration amount of the outer tub with an elastic support part in order to suppress the vibration of the outer tub during dehydration due to the eccentric load of the garment (for example, Patent Document 1).

図１０は、特許文献１に記載された従来の洗濯機の全体構成を示すものである。図１０に示すように、脱水時の水を受けるための外槽１の底部に動力伝達機構２が固着されており、この動力伝達機構２は外槽１の底部に固着されたモータ３とベルトで連結されている。動力伝達機構２の内側の撹拌翼軸４には撹拌翼５が固定され、外側の軸６には外槽１内に位置して脱水槽７が固定されている。脱水槽７の上部には流体バランサー８が具備されている。外槽１は外枠９の上端よりサスペンション１０を介して弾性的に吊り下げ支持されている。   FIG. 10 shows an overall configuration of a conventional washing machine described in Patent Document 1. As shown in FIG. As shown in FIG. 10, a power transmission mechanism 2 is fixed to the bottom of the outer tub 1 for receiving water during dehydration. The power transmission mechanism 2 includes a motor 3 and a belt fixed to the bottom of the outer tub 1. It is connected with. A stirring blade 5 is fixed to the stirring blade shaft 4 inside the power transmission mechanism 2, and a dehydration tank 7 is fixed to the outer shaft 6 in the outer tank 1. A fluid balancer 8 is provided above the dehydration tank 7. The outer tub 1 is elastically suspended and supported via a suspension 10 from the upper end of the outer frame 9.

１１は外槽１の振動の揺れを検知する検出装置で可動部と固定部とで構成する。１２は検出装置の信号処理及びモータ３等を制御する制御回路である。１３は可動部として磁性材料であるフェライトを用いている。フェライトは円筒状を成し、受け皿１４と押さえ板１５の間に挟まれている。固定部は、コイルを巻くコア材料として、Ｅ形の形状の磁性材料１６とこれに巻かれたコイル１７から構成される。   Reference numeral 11 denotes a detection device that detects the vibration of the outer tub 1 and includes a movable portion and a fixed portion. A control circuit 12 controls the signal processing of the detection device and the motor 3 and the like. Reference numeral 13 uses a magnetic material ferrite as the movable part. The ferrite has a cylindrical shape and is sandwiched between the tray 14 and the pressing plate 15. The fixed part is composed of an E-shaped magnetic material 16 and a coil 17 wound around the E-shaped magnetic material 16 as a core material around which the coil is wound.

この構成により、外槽１の横揺れはサスペンション１０を介してフェライト１３の左右の動きとして捉える。そして、この左右の動き量は、フェライト１３とコア１６の距離に対応して変化するコイル１７のインダクタンス量の変化として検出している。この検出装置１１のコイル１７のインダクタンス量の変化により発振周波数の変化として検出し、その変動度により外槽１の揺れ具合を判断して運転制御を行うものであった。
特開平８−９８９８８号公報 With this configuration, the roll of the outer tub 1 is captured as the left and right movement of the ferrite 13 via the suspension 10. The left and right movement amounts are detected as changes in the inductance amount of the coil 17 that changes in accordance with the distance between the ferrite 13 and the core 16. This change is detected as a change in the oscillation frequency based on the change in the inductance of the coil 17 of the detection device 11, and the operation control is performed by judging the degree of shaking of the outer tub 1 based on the degree of variation.
JP-A-8-989888

しかしながら、前記従来の構成では、外槽１の横揺れをサスペンション１０を介したフェライト１３の左右の動きとして捉え、この左右の動き量をフェライト１３と相対するコイル１７のインダクタンス量の変化として検出しているため、外槽１の揺れが大きくてもフェライト１３の変位は少なく、変位検出の感度が小さいという問題があった。   However, in the conventional configuration, the roll of the outer tub 1 is regarded as the left and right movement of the ferrite 13 via the suspension 10, and the right and left movement amount is detected as a change in the inductance amount of the coil 17 facing the ferrite 13. Therefore, there is a problem that even if the shaking of the outer tub 1 is large, the displacement of the ferrite 13 is small and the sensitivity of displacement detection is small.

本発明は、前記従来の課題を解決するもので、外槽の変位量を直接検出することによって検出感度を上げ、被洗濯物の偏荷重の有無を脱水の初期に判断し、被洗濯物の偏荷重補正に必要な時間を短縮して、脱水に要する時間を短くすることができる洗濯機を提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and increases the detection sensitivity by directly detecting the amount of displacement of the outer tub, determines the presence or absence of uneven load on the laundry in the initial stage of dehydration, and It is an object of the present invention to provide a washing machine that can shorten the time required for correcting the uneven load and shorten the time required for dehydration.

前記従来の課題を解決するために、本発明の洗濯機は、洗濯機外枠に弾性支持された外槽と、回転軸を前上がりに傾斜させて前記外槽内に回転可能に設けられた洗濯兼脱水槽と、前記洗濯兼脱水槽を回転させる駆動手段と、コイルと前記コイルのインダクタンスを変化させる磁性体を有し前記外槽の変位量をインダクタンスの変化量として前記外槽の振動を検出する振動検出手段と、前記振動検出手段によって検出された前記外槽の振動レベルに応じて前記駆動手段を制御する回転制御部とを備え、前記振動検出手段は、前記外槽の後部と前記外槽の後部に対向する前記洗濯機外枠との間に配設され、前記コイルまたは前記磁性体のいずれか一方を前記外槽に枢着し、他方を前記洗濯機外枠に枢着し、前記外槽の上下方向の変位に対応して可動自在に構成するとともに、振動の検出方向を前記洗濯兼脱水槽の回転軸と略平行に設定したものである。 In order to solve the above-described conventional problems, the washing machine of the present invention is provided with an outer tub elastically supported by the outer frame of the washing machine and a rotatable rotation shaft in the outer tub with the rotation shaft inclined upward. A washing and dewatering tub; drive means for rotating the washing and dewatering tub; and a coil and a magnetic body that changes an inductance of the coil. A vibration detecting means for detecting, and a rotation control section for controlling the driving means in accordance with a vibration level of the outer tub detected by the vibration detecting means, wherein the vibration detecting means comprises a rear portion of the outer tub and the Arranged between the outer frame of the washing machine facing the rear part of the outer tub, and either the coil or the magnetic body is pivotally attached to the outer tub, and the other is pivotally attached to the outer frame of the washing machine. Possible to correspond to the vertical displacement of the outer tub Together they constitute freely, in which the detection direction of the vibration was set substantially parallel to the axis of rotation of the washing and dewatering tank.

これによって、被洗濯物の偏荷重による脱水初期の外槽の横揺れを早期に検出して補正工程に移行できるので補正までの時間を短縮することができ、脱水に要する時間を短くすることができる。   As a result, it is possible to detect the roll of the outer tub in the initial stage of dehydration due to the uneven load of the laundry to be shifted to the correction process, so that the time until correction can be shortened and the time required for dehydration can be shortened. it can.

本発明の洗濯機は、被洗濯物の偏荷重による脱水初期の外槽の横揺れを早期に検出して補正工程に移行できるので、補正工程に移行するまでの時間を短縮することができ、脱水に要する時間を短くすることができる。 Since the washing machine of the present invention can detect the roll of the outer tub in the initial stage of dehydration due to the uneven load of the laundry to be shifted to the correction process, the time to shift to the correction process can be shortened, The time required for dehydration can be shortened.

第１の発明は、洗濯機外枠に弾性支持された外槽と、回転軸を前上がりに傾斜させて前記外槽内に回転可能に設けられた洗濯兼脱水槽と、前記洗濯兼脱水槽を回転させる駆動手段と、コイルと前記コイルのインダクタンスを変化させる磁性体を有し前記外槽の変位量をインダクタンスの変化量として前記外槽の振動を検出する振動検出手段と、前記振動検出手段によって検出された前記外槽の振動レベルに応じて前記駆動手段を制御する回転制御部とを備え、前記振動検出手段は、前記外槽の後部と前記外槽の後部に対向する前記洗濯機外枠との間に配設され、前記コイルまたは前記磁性体のいずれか一方を前記外槽に枢着し、他方を前記洗濯機外枠に枢着し、前記外槽の上下方向の変位に対応して可動自在に構成するとともに、振動の検出方向を前記洗濯兼脱水槽の回転軸と略平行に設定したことにより、外槽の横揺れを直接検出するので検出感度が高く、それにより被洗濯物の偏荷重の有無を脱水の初期に判断できるので、補正工程に移行する時間を短縮することができ、脱水に要する時間を短くすることができる。また、振動検出手段は、外槽の上下方向の変位に対応して可動自在に構成したことにより、被洗濯物や洗濯水の量で外槽の静止位置が上下方向に移動しても振動検出姿勢を維持することができる。 According to a first aspect of the present invention, there is provided an outer tub elastically supported by an outer frame of a washing machine, a washing / dehydrating tub rotatably provided in the outer tub with a rotating shaft inclined upward, and the washing / dehydrating tub Driving means for rotating the coil, a vibration detecting means for detecting the vibration of the outer tub having a coil and a magnetic body for changing the inductance of the coil as the amount of change in the inductance of the outer tub, and the vibration detecting means A rotation control unit that controls the driving unit according to the vibration level of the outer tub detected by the outer tub, the vibration detecting unit being outside the washing machine facing the rear part of the outer tub and the rear part of the outer tub. It is arranged between the frame and either the coil or the magnetic body is pivotally attached to the outer tub, and the other is pivotally attached to the washing machine outer frame, corresponding to the vertical displacement of the outer tub. and with constituting freely movable, detection of the vibration By setting the direction to be substantially parallel to the rotation axis of the washing / dehydrating tub, the lateral sway of the outer tub is directly detected, so the detection sensitivity is high, thereby determining whether there is an uneven load on the laundry in the initial stage of dehydration. Therefore, it is possible to shorten the time for shifting to the correction process, and it is possible to shorten the time required for dehydration. In addition, the vibration detection means is configured to be movable in response to the vertical displacement of the outer tub, so that vibration detection is possible even if the stationary position of the outer tub moves up and down depending on the amount of laundry and washing water. The posture can be maintained.

第２の発明は、特に、第１の発明の振動検出手段は、その一端を外槽後部の下端近傍に取り付けたことにより、外槽のより早く振動が大きくなる位置で振動を検出することになり、脱水初期のより早い段階で被洗濯物の偏荷重の有無を判断することができ、脱水に要する時間を更に短くすることができる。 In the second invention, in particular, the vibration detecting means of the first invention detects vibration at a position where the vibration is increased earlier in the outer tank by attaching one end thereof in the vicinity of the lower end of the rear part of the outer tank. Therefore, it is possible to determine whether or not there is an uneven load on the laundry at an earlier stage of the dehydration, and the time required for dehydration can be further shortened.

第３の発明は、特に、第１または第２の発明の振動検出手段は、被洗濯物と所定量の洗濯水を入れた状態で回転軸と略平行となるように設定したことにより、被洗濯物や所定量の洗濯水で外槽の静止位置が下方向に移動した実使用状態で最適な振動検出姿勢を得ることができる。 In the third invention, in particular, the vibration detecting means of the first or second invention is set so as to be substantially parallel to the rotation axis in a state in which a laundry and a predetermined amount of washing water are placed. An optimal vibration detection posture can be obtained in an actual use state in which the stationary position of the outer tub is moved downward with laundry or a predetermined amount of washing water.

第４の発明は、特に、第１〜第３のいずれか１つの発明の振動検出手段は、外槽が最下位置に変位したときの傾斜角度を回転軸の略平行の範囲内としたことにより、被洗濯物や洗濯水の量で外槽の静止位置が最下位置に移動しても良好な振動検出姿勢を維持することができる。 In the fourth aspect of the invention, in particular, in the vibration detecting means of any one of the first to third aspects , the inclination angle when the outer tub is displaced to the lowermost position is set within a substantially parallel range of the rotation axis. Thus, even if the stationary position of the outer tub moves to the lowest position depending on the amount of laundry or washing water, a good vibration detection posture can be maintained.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の第１の実施の形態における洗濯機の断面図、図２は、同洗濯機の外槽の脱水振動レベルを示すグラフである。図１において、洗濯機外枠３０は、１本の引張りばね３１と、２本のダンパ３２と圧縮ばね３２ａにより外槽３３を弾性支持している。洗濯兼脱水槽３４は、外槽３３内に回転自在に配設しており、回転軸３４ａが前上がりに傾斜している。傾斜角度は操作性を考慮して２０〜３０°に設定されており、引張りばね３１により傾斜角度が維持されている。モータ（駆動手段）３５は、ブラシレス直流モータ
から成っており、インバータ制御され、回転速度が自在に変化されるようになっている。そして直接洗濯兼脱水槽３４を駆動する。 (Embodiment 1)
FIG. 1 is a cross-sectional view of the washing machine according to the first embodiment of the present invention, and FIG. 2 is a graph showing the dehydration vibration level of the outer tub of the washing machine. In FIG. 1, the washing machine outer frame 30 elastically supports an outer tub 33 by one tension spring 31, two dampers 32, and a compression spring 32a. The washing / dehydrating tub 34 is rotatably disposed in the outer tub 33, and the rotating shaft 34a is inclined upward. The inclination angle is set to 20 to 30 ° in consideration of operability, and the inclination angle is maintained by the tension spring 31. The motor (driving means) 35 is composed of a brushless DC motor and is controlled by an inverter so that the rotational speed can be freely changed. Then, the washing / dehydrating tub 34 is directly driven.

給水手段３６は洗濯兼脱水槽３４内に給水するものである。水位検知手段３７は、外糟３３内の洗濯水位を検知する。排水手段３８は、外槽３３内の洗濯水を排水するものである。制御装置３９は、洗濯機外枠３０の前面下部に設けられており、回転制御部３９ａを内包している。制御装置３９は、洗濯機外枠３０の前面上部に設けられた操作表示手段４０により入力された設定内容に基づいて洗い、すすぎ、脱水の各行程を逐次制御するもので、パワースイッチング手段（図示せず）を介してモータ３５、給水手段３６、排水手段３８などを逐次制御する。   The water supply means 36 supplies water into the washing / dehydrating tub 34. The water level detection means 37 detects the washing water level in the outer basket 33. The drainage means 38 drains the washing water in the outer tub 33. The control device 39 is provided at the lower part of the front surface of the washing machine outer frame 30 and includes a rotation control unit 39a. The control device 39 sequentially controls each step of washing, rinsing and dehydration based on the setting contents input by the operation display means 40 provided at the upper front of the washing machine outer frame 30. The power switching means (FIG. The motor 35, the water supply means 36, the drainage means 38, etc. are sequentially controlled via a not-shown).

振動検出手段４１は、外槽後部３３ａと洗濯機外枠背面３０ａの間に固定されている。振動検出手段４１は、マーカ４１ａとセンサ４１ｂから構成されている。マーカ４１ａとセンサ４１ｂは両者の相対変位を測定できるものならばどのようなものでもよく、例えばレーザ変位計等が使用可能である。マーカ４１ａは外槽後部３３ａに取り付けられ、センサ４１ｂは洗濯機外枠背面３０ａに取り付けられており、両者の取り付け位置関係は、回転軸３４ａと略平行になるようにしている。この時の略平行の範囲は、振動の検出方向４２を基準に−１５°〜＋１５°である。   The vibration detection means 41 is fixed between the outer tub rear portion 33a and the washing machine outer frame back surface 30a. The vibration detection means 41 includes a marker 41a and a sensor 41b. The marker 41a and the sensor 41b may be anything as long as they can measure the relative displacement between them. For example, a laser displacement meter or the like can be used. The marker 41a is attached to the outer tub rear portion 33a, and the sensor 41b is attached to the washing machine outer frame back surface 30a, and the attachment positional relationship between the two is substantially parallel to the rotating shaft 34a. The substantially parallel range at this time is −15 ° to + 15 ° with respect to the vibration detection direction 42.

以上のように構成された洗濯機について、以下その動作、作用を説明する。まず、洗濯兼脱水槽３４内に被洗濯物と洗剤を投入後、操作表示手段４０を操作して運転を開始する。これによって、給水手段３６が動作し、洗濯兼脱水槽３４内に洗濯水が供給されると共に洗濯兼脱水槽３４も回転を開始する。規定量の洗濯水が供給されると給水手段３６は給水を停止する。洗濯兼脱水槽３４の回転によって、洗剤は洗濯水に溶かされ、洗濯液となって衣類に浸透する。洗濯兼脱水槽３４は、３０ｒ／ｍｉｎ程度の低速で回転して、被洗濯物を持ち上げては落とすというたたき洗いを規定時間行う。   About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, after putting laundry and detergent into the washing and dewatering tub 34, the operation display means 40 is operated to start operation. As a result, the water supply means 36 operates, the washing water is supplied into the washing / dehydrating tub 34, and the washing / dehydrating tub 34 also starts rotating. When the specified amount of washing water is supplied, the water supply means 36 stops water supply. By the rotation of the washing and dewatering tub 34, the detergent is dissolved in the washing water and becomes a washing liquid and penetrates into the clothes. The washing and dewatering tub 34 rotates at a low speed of about 30 r / min, and performs washing for a specified time to lift and drop the laundry.

洗濯終了後、排水手段３８が作動し、汚れを溶かし込んだ洗濯液は、外槽３３の外に排水される。排水終了後、洗濯兼脱水槽３４の回転は徐々に速くなる。被洗濯物の偏荷重が大きい時、洗濯兼脱水槽３４の回転が１８０ｒ／ｍｉｎになると水平方向の共振点に近づくので、外槽３３は水平方向に大きく振動する。洗濯兼脱水槽３４の回転軸３４ａは前上がりに傾斜しているので、被洗濯物の偏荷重による遠心力は外槽３３の前後方向にも作用するので、外槽３３は前後に大きく振動するようになる。   After the washing is finished, the drainage means 38 is operated, and the washing liquid in which the dirt is dissolved is drained out of the outer tub 33. After the drainage is completed, the rotation of the washing and dewatering tank 34 is gradually increased. When the unbalanced load of the laundry is large, the outer tub 33 vibrates greatly in the horizontal direction because it approaches the horizontal resonance point when the rotation of the washing / dehydrating tub 34 reaches 180 r / min. Since the rotating shaft 34a of the washing and dewatering tub 34 is inclined upward, the centrifugal force due to the unbalanced load of the laundry also acts in the front-rear direction of the outer tub 33, so that the outer tub 33 vibrates greatly back and forth. It becomes like this.

その振動によりマーカ４１ａとセンサ４１ｂの相対変位の変化量も大きくなる。相対変位の変化量はセンサ４１ｂで電気信号に変換され、回転制御部３９ａに伝達され、モータ３５の回転数が下げられて被洗濯物の偏荷重の補正工程へ移行し補正終了後、再度モータ３５の回転数を規定値まで上げて脱水工程を終了する。この時、被洗濯物の偏荷重は補正されているので、脱水の起動から定常まで振動がなくスムーズに脱水工程を進行させることができる。   The vibration also increases the amount of change in the relative displacement between the marker 41a and the sensor 41b. The amount of change in the relative displacement is converted into an electric signal by the sensor 41b, transmitted to the rotation control unit 39a, the number of rotations of the motor 35 is lowered, and the process proceeds to the process of correcting the unbalanced load of the laundry. The rotational speed of 35 is increased to a specified value, and the dehydration process is completed. At this time, since the uneven load of the laundry is corrected, the dehydration process can proceed smoothly without vibration from the start of dehydration to the steady state.

図２に示すように、外槽３３の振動の共振点は、１８０ｒ／ｍｉｎで水平方向、３００ｒ／ｍｉｎで垂直方向になっている。外槽３３の水平方向の共振点は外槽３３、洗濯兼脱水槽３４とモータ３５の合計質量と引張りばね３１で形成される振動系の固有振動数で表される。また、外槽３３の振動の垂直方向の共振点は、外槽３３、洗濯兼脱水槽３４とモータ３５の合計質量と引張りばね３１と圧縮ばね３２ａで形成される振動系の固有振動数で表される。外槽３３の姿勢を維持するための引張りばね３１と外槽３３、洗濯兼脱水槽３４とモータ３５の重量物を支える圧縮ばね３２ａの強さを比較すると圧縮ばね３２ａの方が約２．８倍強くなる。これを固有振動数で言うと、約１．７倍高くなることになり、水平方向の１８０ｒ／ｍｉｎに対して垂直方向が３００ｒ／ｍｉｎになる。したがって、
振動検出手段４１を洗濯兼脱水槽３４の回転軸３４ａに対して略平行に設けることで外槽３３の水平方向の振動を効率よく検出し、脱水工程の初期で被洗濯物の偏過重の有無を精度よく判断できることになる。 As shown in FIG. 2, the resonance point of vibration of the outer tub 33 is in the horizontal direction at 180 r / min and in the vertical direction at 300 r / min. The horizontal resonance point of the outer tub 33 is represented by the total mass of the outer tub 33, the washing / dehydrating tub 34 and the motor 35, and the natural frequency of the vibration system formed by the tension spring 31. The vertical resonance point of the vibration of the outer tub 33 is expressed by the total mass of the outer tub 33, the washing / dehydrating tub 34 and the motor 35, and the natural frequency of the vibration system formed by the tension spring 31 and the compression spring 32a. Is done. Comparing the strength of the tension spring 31 and the outer tub 33 for maintaining the posture of the outer tub 33, the strength of the washing / dehydrating tub 34 and the compression spring 32a that supports the heavy load of the motor 35, the compression spring 32a is about 2.8. Become stronger twice. In terms of natural frequency, this is about 1.7 times higher, and the vertical direction is 300 r / min with respect to 180 r / min in the horizontal direction. Therefore,
By providing the vibration detecting means 41 substantially parallel to the rotating shaft 34a of the washing / dehydrating tub 34, the horizontal vibration of the outer tub 33 can be detected efficiently, and whether there is excessive weight of the laundry in the initial stage of the dehydration process. Can be accurately determined.

以上のように本実施の形態においては、振動検出手段４１の振動の検出方向を洗濯兼脱水槽の回転軸３４ａと略平行に設定したことにより、外槽３３の横揺れを精度よく検出し、それにより被洗濯物の偏荷重の有無を脱水工程の初期に判断して、補正工程に移行する時間を短縮することができ、脱水に要する時間を短くすることができる。   As described above, in the present embodiment, by setting the vibration detection direction of the vibration detection means 41 to be substantially parallel to the rotation shaft 34a of the washing and dewatering tub, the roll of the outer tub 33 is accurately detected, Accordingly, it is possible to determine whether or not there is an uneven load on the laundry in the initial stage of the dehydration process, to shorten the time required for the correction process, and to shorten the time required for the dehydration.

（実施の形態２）
図３は、本発明の第２の実施の形態における洗濯機の断面図を示すものである。図３において、振動検出手段４１は、外槽後部３３ａと外槽後部３３ａに対向する洗濯機外枠３０ｂとの間に配設されている。その他の構成は実施の形態１と同様である。 (Embodiment 2)
FIG. 3 shows a cross-sectional view of a washing machine according to the second embodiment of the present invention. In FIG. 3, the vibration detection means 41 is disposed between the outer tub rear portion 33a and the washing machine outer frame 30b facing the outer tub rear portion 33a. Other configurations are the same as those of the first embodiment.

これにより、脱水初期のより早い段階で被洗濯物の偏荷重の有無を判断することができ、脱水に要する時間を更に短くすることができる。   Thereby, the presence or absence of the uneven load of the laundry can be determined at an earlier stage of the initial stage of dehydration, and the time required for dehydration can be further shortened.

（実施の形態３）
図４は、本発明の第３の実施の形態における洗濯機の断面図を示すものである。図４において、振動検出手段４１は、その一端４１ｃを外槽後部３３ａの下端近傍３３ｂに取り付けている。その他の構成は実施の形態１または２と同様である。外槽３３の振動は、水平方向の振動と吊部の重心４３を中心にする回転振動の合成になる。ここで吊部とは外槽３３、洗濯兼脱水槽３４、モータ３５のユニットを指す。前記の回転振動がより大きく現れる外槽後部３３ａの下端近傍３３ｂで振動を検出することになり、脱水初期のより早い段階で被洗濯物の偏荷重の有無を判断することができ、脱水に要する時間を更に短くすることができる。 (Embodiment 3)
FIG. 4 shows a cross-sectional view of a washing machine in the third embodiment of the present invention. In FIG. 4, the vibration detecting means 41 has one end 41c attached to the vicinity of the lower end 33b of the outer tank rear portion 33a. Other configurations are the same as those in the first or second embodiment. The vibration of the outer tub 33 is a combination of horizontal vibration and rotational vibration about the center of gravity 43 of the hanging portion. Here, the hanging portion refers to a unit of the outer tub 33, the washing / dehydrating tub 34, and the motor 35. The vibration is detected in the vicinity of the lower end 33b of the outer tub rear portion 33a where the rotational vibration appears more greatly, and it is possible to determine whether there is an uneven load on the laundry at an earlier stage of the dehydration, which is necessary for dehydration. Time can be further shortened.

（実施の形態４）
図５は、本発明の第４の実施の形態における洗濯機の要部の軽量時の側面図、図６は、同洗濯機の要部の重量時の側面図を示すものである。図５、図６において、振動検出手段４１は、その両端を外槽３３と洗濯機外枠３０に枢着し、外槽３３の上下方向の変位に対応して可動自在としている。接続部４４は外槽３３と洗濯機外枠３０に設けられており、半球状の凹部４４ａを有している。振動検出手段４１のマーカ４１ａとセンサ４１ｂには一端に取り付け部４５が設けられている。取り付け部４５は球状に形成されており、凹部４４ａにはめ込まれ、回転可能に保持されている。この構造により、振動検出手段４１は外槽３３の上下方向の変位に対応して可動自在となる。その他の構成は実施の形態１〜３と同様である。 (Embodiment 4)
FIG. 5 is a side view of the main part of the washing machine in the fourth embodiment of the present invention when it is light, and FIG. 6 is a side view of the main part of the washing machine when it is heavy. 5 and 6, the vibration detecting means 41 is pivotally attached to the outer tub 33 and the washing machine outer frame 30 at both ends, and is movable in accordance with the vertical displacement of the outer tub 33. The connection part 44 is provided in the outer tub 33 and the washing machine outer frame 30, and has a hemispherical recess 44a. A mounting portion 45 is provided at one end of the marker 41a and the sensor 41b of the vibration detecting means 41. The attachment portion 45 is formed in a spherical shape, is fitted into the recess 44a, and is rotatably held. With this structure, the vibration detecting means 41 is movable in response to the vertical displacement of the outer tub 33. Other configurations are the same as those in the first to third embodiments.

この構成により、被洗濯物や洗濯水の量で外槽３３の静止位置が上下方向に移動しても振動検出姿勢を維持することができる。   With this configuration, it is possible to maintain the vibration detection posture even when the stationary position of the outer tub 33 moves in the vertical direction depending on the amount of laundry or washing water.

（実施の形態５）
図７は、本発明の第５の実施の形態における洗濯機の要部の側面図を示すものである。図７において、振動検出手段４１は、被洗濯物と所定量の洗濯水を入れた状態で回転軸３４ａと略平行となるように設定されている。その他の構成は実施の形態１〜４と同様である。 (Embodiment 5)
FIG. 7: shows the side view of the principal part of the washing machine in the 5th Embodiment of this invention. In FIG. 7, the vibration detecting means 41 is set so as to be substantially parallel to the rotating shaft 34a in a state where a laundry and a predetermined amount of washing water are put. Other configurations are the same as those in the first to fourth embodiments.

この構成により、被洗濯物や所定量の洗濯水で外槽３３の静止位置が下方向に移動した実使用状態で最適な振動検出姿勢を得ることができる。   With this configuration, it is possible to obtain an optimal vibration detection posture in an actual use state in which the stationary position of the outer tub 33 is moved downward with the laundry or a predetermined amount of washing water.

（実施の形態６）
図８は、本発明の第６の実施の形態における洗濯機の要部の側面図を示すものである。図８において、振動検出手段４１は、外槽３３が最下位置に変位したときの傾斜角度４１ｄを回転軸３４ａの略平行の範囲内に設定している。その他の構成は実施の形態１〜５と同様である。 (Embodiment 6)
FIG. 8: shows the side view of the principal part of the washing machine in the 6th Embodiment of this invention. In FIG. 8, the vibration detection means 41 sets an inclination angle 41d when the outer tub 33 is displaced to the lowest position within a range substantially parallel to the rotation shaft 34a. Other configurations are the same as those in the first to fifth embodiments.

この構成により、被洗濯物や洗濯水の量で外槽３３の静止位置が最下位置に移動しても良好な振動検出姿勢を維持することができる。   With this configuration, even if the stationary position of the outer tub 33 moves to the lowest position depending on the amount of laundry or washing water, a good vibration detection posture can be maintained.

（実施の形態７）
図９は、本発明の第７の実施の形態における洗濯機の要部の側面図を示すものである。図９において、振動検出手段４１は、コイル４６とコイル４６のインダクタンスを変化させる磁性体４７を有している。コイル４６を洗濯機外枠背面３０ａに取り付け、磁性体４７を外槽後部３３ａに取り付けている。その他の構成は実施の形態１〜６と同様である。 (Embodiment 7)
FIG. 9: shows the side view of the principal part of the washing machine in the 7th Embodiment of this invention. In FIG. 9, the vibration detection means 41 includes a coil 46 and a magnetic body 47 that changes the inductance of the coil 46. The coil 46 is attached to the washing machine outer frame back surface 30a, and the magnetic body 47 is attached to the outer tub rear portion 33a. Other configurations are the same as those of the first to sixth embodiments.

この構成により、外槽３３の変位量をコイル４６のインダクタンスの変化量として検出することになり、加速度の小さい脱水初期においても確実に外槽３３の振動を検出することができる。   With this configuration, the amount of displacement of the outer tub 33 is detected as the amount of change in the inductance of the coil 46, and the vibration of the outer tub 33 can be reliably detected even in the initial stage of dehydration with low acceleration.

以上のように、本発明に関わる洗濯機は、低速回転から高速回転まで広い範囲の回転数に対応して振動量を簡単に測定することができる。   As described above, the washing machine according to the present invention can easily measure the vibration amount corresponding to the rotation speed in a wide range from the low speed rotation to the high speed rotation.

本発明の実施の形態１における洗濯機の断面図Sectional drawing of the washing machine in Embodiment 1 of this invention 同洗濯機の外槽の脱水振動レベルを示すグラフGraph showing dehydration vibration level of outer tub of the washing machine 本発明の実施の形態２における洗濯機の断面図Sectional drawing of the washing machine in Embodiment 2 of this invention 本発明の実施の形態３における洗濯機の断面図Sectional drawing of the washing machine in Embodiment 3 of this invention 本発明の実施の形態４における洗濯機の要部の軽量時の側面図Side view at the time of lightweight of the principal part of washing machine in Embodiment 4 of this invention 同洗濯機の要部の重量時の側面図Side view of the main part of the washing machine when it is heavy 本発明の実施の形態５における洗濯機の要部の側面図Side view of the principal part of the washing machine in Embodiment 5 of the present invention 本発明の実施の形態６における洗濯機の要部の側面図Side view of the principal part of the washing machine according to Embodiment 6 of the present invention. 本発明の実施の形態７における洗濯機の要部の側面図Side view of the principal part of the washing machine in Embodiment 7 of this invention 従来の洗濯機の断面図Cross section of a conventional washing machine

３０ 洗濯機外枠
３０ｂ 対向する洗濯機外枠
３３ 外槽
３３ａ 外槽後部
３３ｂ 下端近傍
３４ 洗濯兼脱水槽
３４ａ 回転軸
３５ 駆動手段
３９ａ 回転制御部
４１ 振動検出手段
４１ｃ 振動検出手段の一端
４１ｄ 傾斜角度
４２ 振動の検出方向
４６ コイル
４７ 磁性体 30 Washing machine outer frame 30b Opposing washing machine outer frame 33 Outer tub 33a Outer tub rear 33b Near lower end 34 Washing / dehydration tub 34a Rotating shaft 35 Drive means 39a Rotation control section 41 Vibration detection means 41c One end of vibration detection means 41d Inclination angle 42 Direction of vibration detection 46 Coil 47 Magnetic body

Claims (4)

洗濯機外枠に弾性支持された外槽と、回転軸を前上がりに傾斜させて前記外槽内に回転可能に設けられた洗濯兼脱水槽と、前記洗濯兼脱水槽を回転させる駆動手段と、コイルと前記コイルのインダクタンスを変化させる磁性体を有し前記外槽の変位量をインダクタンスの変化量として前記外槽の振動を検出する振動検出手段と、前記振動検出手段によって検出された前記外槽の振動レベルに応じて前記駆動手段を制御する回転制御部とを備え、前記振動検出手段は、前記外槽の後部と前記外槽の後部に対向する前記洗濯機外枠との間に配設され、前記コイルまたは前記磁性体のいずれか一方を前記外槽に枢着し、他方を前記洗濯機外枠に枢着し、前記外槽の上下方向の変位に対応して可動自在に構成するとともに、振動の検出方向を前記洗濯兼脱水槽の回転軸と略平行に設定した洗濯機。 An outer tub elastically supported by the outer frame of the washing machine, a washing and dewatering tub that is rotatably provided in the outer tub with a rotation shaft inclined upward, and a driving unit that rotates the washing and dehydrating tub. A vibration detection means that has a coil and a magnetic body that changes the inductance of the coil, and that detects the vibration of the outer tub using the displacement amount of the outer tub as the amount of change in inductance; and the outer part detected by the vibration detection means A rotation control unit that controls the driving unit according to a vibration level of the tub, and the vibration detection unit is disposed between the rear part of the outer tub and the washing machine outer frame facing the rear part of the outer tub. One of the coil and the magnetic body is pivotally attached to the outer tub, and the other is pivotally attached to the washing machine outer frame, and is configured to be movable corresponding to the vertical displacement of the outer tub. as well as, the washing detection direction of the vibration Washing machine substantially set parallel to the axis of rotation of the dewatering tank. 振動検出手段は、その一端を外槽後部の下端近傍に取り付けた請求項１記載の洗濯機。 The washing machine according to claim 1, wherein the vibration detecting means has one end attached in the vicinity of the lower end of the rear part of the outer tub . 振動検出手段は、被洗濯物と所定量の洗濯水を入れた状態で回転軸と略平行となるように設定した請求項１または２記載の洗濯機。 The washing machine according to claim 1 or 2, wherein the vibration detecting means is set so as to be substantially parallel to the rotation axis in a state in which a laundry and a predetermined amount of washing water are put . 振動検出手段は、外槽が最下位置に変位したときの傾斜角度を回転軸の略平行の範囲内とした請求項１〜３のいずれか１項に記載の洗濯機。 The washing machine according to any one of claims 1 to 3, wherein the vibration detection means sets an inclination angle when the outer tub is displaced to the lowest position within a range substantially parallel to the rotation axis .
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH119887A (en) * 1997-06-18 1999-01-19 Electrolux Zanushi Spa Washing machine with improved dynamic balancing control of suspended assembly for washing
JP2000279682A (en) * 1999-03-29 2000-10-10 Sanyo Electric Co Ltd Washing machine
JP2004154315A (en) * 2002-11-06 2004-06-03 Hitachi Home & Life Solutions Inc Washing machine and vibration detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH119887A (en) * 1997-06-18 1999-01-19 Electrolux Zanushi Spa Washing machine with improved dynamic balancing control of suspended assembly for washing
JP2000279682A (en) * 1999-03-29 2000-10-10 Sanyo Electric Co Ltd Washing machine
JP2004154315A (en) * 2002-11-06 2004-06-03 Hitachi Home & Life Solutions Inc Washing machine and vibration detector

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