JPS6112958Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は洗濯槽の底部に設けた回転翼を回転さ
せて洗濯する洗濯機に関し、その目的とするとこ
ろは布傷みが少なくて布の上下の入れ替わりが頻
繁になりむらなく洗濯できる洗濯機を得んとする
ものである。[Detailed description of the invention] This invention relates to a washing machine that washes clothes by rotating rotary blades installed at the bottom of the washing tub.The purpose of this invention is to minimize fabric damage and prevent fabrics from frequently changing top and bottom and causing unevenness. The purpose is to provide a washing machine that can wash clothes without any problems.

従来洗濯機は、洗濯槽底部に設けた回転翼を高
速で回転させて渦巻水流を発生させて洗濯する渦
巻式のものと、洗濯槽底部に高さの高い撹拌翼を
設けて、この撹拌翼を左右交互に１回転しないう
ちに切替えて洗濯する撹拌式のものとがある。渦
巻式のものは強い水流で布の回転が激しく洗浄力
は強いが、布が傷みやすい。又撹拌式のものは渦
巻式に比べ布傷みが少ない代り中央に高さの高い
撹拌翼がある関係から、布の回転特に上の布と下
の布との入れ替わりが少なく、洗いむらが生じ、
洗浄力が弱い等夫々問題を有していた。 Conventional washing machines have two types: one is a whirlpool type, which uses rotary blades installed at the bottom of the washing tub to rotate at high speed to generate a swirling water flow, and the other is a whirlpool type, which uses a high agitation blade installed at the bottom of the washing tub to create a swirling water flow. There is also an agitation type that washes the laundry by switching between left and right alternately in less than one rotation. The whirlpool type has a strong water flow that rotates the cloth rapidly and has a strong cleaning power, but the cloth is easily damaged. In addition, the stirring type has less fabric damage compared to the spiral type, but because it has a high stirring blade in the center, there is less rotation of the cloth, especially the exchange of the upper and lower cloths, resulting in uneven washing.
Each had its own problems, such as weak cleaning power.

本考案は新規な回転翼を使用することによつ
て、布傷みが少なく且つ布の上下の入れ替わりが
頻繁になり洗いむらが少なく洗浄力も良い洗濯機
を提供せんとするものである。 The present invention aims to provide a washing machine that uses a novel rotary blade to cause less damage to the cloth, frequently turns the top and bottom of the cloth, reduces uneven washing, and has good cleaning power.

以下本考案を図に基づき説明する。 The present invention will be explained below based on the drawings.

１は脱水槽を兼ねる洗濯槽で、その周壁には多数
の脱水孔２を有し、その口縁にはバランスリング
３が取付けられている。そして洗濯槽１の底部中
央には、新規な回転翼４が配設されている。洗濯
槽１は外槽５内に設けられ、外槽５の底部には洗
濯槽１や回転翼４を回転せしめる駆動モータ６や
クラツチやブレーキ装置等を有する駆動機構７が
装着され、かかる外槽５は機枠８上部より複数の
吊棒９にて防振的に吊下されている。Reference numeral 1 denotes a washing tub which also serves as a dehydration tank, and has a large number of dehydration holes 2 on its peripheral wall, and a balance ring 3 is attached to its mouth edge. In the center of the bottom of the washing tub 1, a novel rotary blade 4 is provided. The washing tub 1 is provided in an outer tub 5, and a drive mechanism 7 having a drive motor 6, a clutch, a brake device, etc. for rotating the washing tub 1 and the rotary blades 4 is attached to the bottom of the outer tub 5. 5 is suspended from the upper part of the machine frame 8 by a plurality of hanging rods 9 in a vibration-proof manner.

而して前記回転翼４は、円形のベース１０と、
このベース１０の周縁より中央に向つてしだいに
突出された略三角柱状の突出部１１と、この突出
部の三角形の各頂点よりベース１０の周縁に向か
つて突設された羽根１２とから構成される。各羽
根１２は第３図から明らかの如くベース１０の周
縁に向つて同方向（図では右方向）にゆるやかに
曲線を描いて偏向している。前記突出部１１の高
さＨは円形ベース１０の外形ｄの約2/1程度で且
つ洗濯槽１の水面の高さｈより低くなるよう定め
られている。実施例においては、洗濯槽１の内径
Ｄ＝400〔mm〕に対し、円形ベース１０の外径ｄ
＝320〔mm〕、突出部１１の高さＨ＝140〔mm〕で
ある。 The rotary blade 4 has a circular base 10,
It is composed of a substantially triangular prism-shaped protrusion 11 that gradually protrudes from the periphery of the base 10 toward the center, and blades 12 that protrude from each triangular apex of the protrusion toward the periphery of the base 10. Ru. As is clear from FIG. 3, each blade 12 is deflected in a gentle curve toward the periphery of the base 10 in the same direction (rightward in the figure). The height H of the protrusion 11 is set to be about 2/1 of the outer diameter d of the circular base 10 and lower than the height h of the water surface of the washing tub 1. In the embodiment, the inner diameter D of the washing tub 1 is 400 [mm], and the outer diameter d of the circular base 10 is
= 320 [mm], and the height H of the protruding portion 11 = 140 [mm].

前記突出部１１の頂部には、一段径の小さくな
つた頂部略三角柱１３が形成されている。この三
角柱１３の側面の傾斜θ２は第４図の如くその下
の径の大きい三角柱（前記突出部１１）の側面上
端の傾斜θ１より緩やかになつている。実施例の
ものではθ２＝12゜、θ１＝８゜である。図で１
４は翼軸１５の頂部と嵌合するボスで、回転翼頂
部裏側に設けたボス１６にインサートされてい
る。回転翼４は翼軸１５頂部に取付ネジ１７を締
着することにより翼軸に取付けられる。 At the top of the protrusion 11, a substantially triangular prism 13 is formed at the top, the diameter of which is reduced by one step. As shown in FIG. 4, the slope θ2 of the side surface of this triangular prism 13 is gentler than the slope θ1 of the upper end of the side surface of the larger diameter triangular prism (the protruding portion 11) below it. In the example, θ2=12° and θ1=8°. 1 in figure
4 is a boss that fits into the top of the blade shaft 15, and is inserted into a boss 16 provided on the back side of the top of the rotary blade. The rotor blade 4 is attached to the blade shaft 15 by tightening a mounting screw 17 to the top of the blade shaft 15.

前記回転翼４は左右交互に回転されるが、その
回転数は従来の回転翼の回転数450〔r.p.m〕〜
720〔r.p.m〕に比べ低く300〔r.p.m〕以下にお
さえてある。実施例のものは約180〔r.p.m〕に
定めてある。そして右へ１秒〜２秒間回転した後
0.5秒〜１秒停止し、左へ１秒〜２秒間回転し0.5
〜１秒間停止するという反転サイクルとなつてい
る。この回転翼４の反転サイクルは、回転翼４の
回転により洗濯槽１内の水面が第２図一点鎖線の
如くすり鉢状に中央部が低くなつても、前記突出
部１１よりも低くならない値となつている。 The rotor blade 4 is rotated alternately left and right, and its rotation speed is from 450 [rpm] to the rotation speed of a conventional rotor blade.
It is lower than 300 [rpm] compared to 720 [rpm]. In the example, the speed is set at about 180 [rpm]. Then, after rotating to the right for 1 to 2 seconds,
Pause for 0.5 seconds to 1 second, rotate to the left for 1 second to 2 seconds, and rotate for 0.5 seconds.
It is a reversal cycle that stops for ~1 second. The reversal cycle of the rotary blade 4 is such that even if the water level in the washing tub 1 becomes lower in the center in a conical shape as shown by the dashed line in FIG. It's summery.

かかるものにおいて洗濯槽１へ給水し布Ｃを入
れ、回転翼４を回転させると、回転翼４の下部で
は従来から使用されている回転翼と同じように布
を水平方向に回転させようとする水流を生じ、回
転翼の上部では突出部１１の三角柱状の面や羽根
１２によつて布を浮き沈みさせる力を与える。そ
の結果布は、第１図矢印の如く洗濯槽側壁に沿つ
て一旦回転翼の方へ沈み、その後三角柱状の突出
部１１に沿つて浮び上がつてくるような運動をし
ながら水平方向に回転する。 In such a washing machine, when water is supplied to the washing tub 1 and the cloth C is put therein, and the rotary blade 4 is rotated, the lower part of the rotary blade 4 attempts to rotate the cloth in the horizontal direction in the same way as the conventionally used rotary blade. A water flow is generated, and the triangular prism-shaped surface of the protrusion 11 and the blades 12 in the upper part of the rotary blade apply a force to raise and lower the cloth. As a result, the cloth temporarily sinks toward the rotor blade along the side wall of the washing tub, as shown by the arrow in Fig. 1, and then floats up along the triangular prism-shaped protrusion 11 and rotates horizontally. do.

特に回転翼の三つの羽根１２が第３図の如く同
方向（右方向）にゆるやかに曲線を描いて偏向し
ているので、回転翼４の回転が左と右でその発生
する水流に差ができ、右回転の場合はより布を上
に浮き上がらせるような水流が強まる。これは右
回転の方がより強い力を水に与えるので、洗濯槽
壁に強く当つてその反動で浮き上がるような水流
が生じるのである。この結果布の上下の動きが大
きくなる。 In particular, since the three blades 12 of the rotor blade are deflected in a gentle curve in the same direction (rightward) as shown in Figure 3, there is a difference in the water flow generated between the left and right rotations of the rotor blade 4. If you turn it to the right, the water flow will be stronger, lifting the cloth upwards. This is because turning to the right applies a stronger force to the water, which causes the water to hit the wall of the washing tub more strongly and the reaction causes a flow of water that floats up. As a result, the vertical movement of the cloth increases.

そして突出部１１が水面下になるようにしてあ
るので、浮び上がつてきた布は、突出部１１上を
乗り越えやすくなつて大きな動きとなる。この際
突出部１１は円筒状ではなく三角柱状になつてい
るので、この突出部でもつて布を周囲へ追いやろ
うとする水流を発生させ、布が突出部へからみつ
かないようにしている。 Since the protrusion 11 is placed below the water surface, the cloth that has floated up can easily get over the protrusion 11, resulting in a large movement. At this time, since the protruding part 11 is not cylindrical but triangular prism-shaped, this protruding part also generates a water flow that tries to drive the cloth to the surroundings, thereby preventing the cloth from getting entangled in the protruding part.

特にこの場合、突出部１１の頂部には、一段径
の小さくなつた頂部略三角柱１３が形成されてい
るので、大きな径の突出部１１の上端部と小さな
径の頂部略三角柱１３とでもつてこの付近に乱流
を発生させて、この部分へ布が一層からみつきに
くくしており、又突出部１１の側面上端の傾斜角
θ１＜頂部略三角柱１３の側面傾斜角θ２となつ
ているので、布が回転翼４の上を一段と乗り越え
やすくなる。 Particularly in this case, since the apex substantially triangular prism 13 whose diameter is reduced by one step is formed at the top of the protrusion 11, the upper end of the protrusion 11 having a large diameter and the apex substantially triangular prism 13 having a small diameter can also be Turbulent flow is generated in the vicinity to make it more difficult for the cloth to get entangled in this area, and since the angle of inclination θ1 of the upper end of the side surface of the protruding portion 11 is less than the angle of inclination θ2 of the side surface of the top approximately triangular prism 13, the cloth is It becomes easier to climb over the rotor blade 4.

従来洗濯槽中央部に高さの高い撹拌翼を有する
撹拌式のものでは、布が撹拌翼にからみつきやす
いので、その反転サイクルを、例えば、0.8秒回
転、0.5秒停止という極く短いものにしなければ
ならなかつたが、本発明では布が回転翼の突出部
１１にからみつきにくいので、その反転サイクル
を前述した通り従来のものに比べ長くでき、タイ
マの反転接点や軸受の寿命やモーターの温度上昇
に有利になり、又洗浄力の向上にもつながる。更
にからみつきにくいのでからみついて布に無理な
引張り力が働らくことがなく布傷みも少なくな
る。 Conventional agitator-type washers with high agitating blades in the center of the washing tub tend to get tangled with the agitating blades, so the reversal cycle must be extremely short, e.g., 0.8 seconds of rotation and 0.5 seconds of stopping. However, in the present invention, since the cloth is less likely to get entangled with the protrusion 11 of the rotor blade, the reversal cycle can be made longer than the conventional one as described above, which reduces the life of the timer's reversing contacts and bearings, and increases the temperature of the motor. This is advantageous for cleaning, and also leads to improved cleaning power. Furthermore, since it is hard to get tangled, it does not cause unreasonable tension to be applied to the cloth due to tangles, and there is less damage to the cloth.

又回転翼の回転数が従来のものに比べ低くして
あるので、それだけでも布傷みは少なくなり、に
もかかわらず、布の上下の動きが撹拌式のものに
比べ活発になり、洗いむらが少なくなつて洗浄効
果が増す。 In addition, since the rotation speed of the rotor blade is lower than that of conventional ones, there is less damage to the cloth, but the up and down movement of the cloth is more active than with a stirring type, which reduces uneven washing. The cleaning effect increases as the amount decreases.

ところで回転翼４の大きさは第５図と第６図の
実験データより定められた。第５図は、円形ベー
ス１０の直径ｄと洗濯槽１の内径Ｄの比に対する
布の毎分の水平方向の回転数の関係を示すグラフ
で、これによると円形ベース１０の直径が大きい
ほど布の回転が多くなり、洗浄力が向上すること
がわかるが、あまり大きいと洗濯槽１の強度を丈
夫なものにしにくくなるので、範囲Ａで示す如く
0.7＜ｄ／Ｄ＜0.9程度がよい。実施例ではＤ＝
400〔mm〕、ｄ＝320〔mm〕だからｄ／Ｄ＝0.8であ
る。 Incidentally, the size of the rotor blade 4 was determined based on the experimental data shown in FIGS. 5 and 6. FIG. 5 is a graph showing the relationship between the horizontal rotation speed of the cloth per minute and the ratio of the diameter d of the circular base 10 and the inner diameter D of the washing tub 1. According to this graph, the larger the diameter of the circular base 10, the more the cloth It can be seen that the number of rotations increases and the cleaning power improves, but if it is too large, it becomes difficult to make the washing tub 1 durable, so as shown in range A.
It is preferable that 0.7<d/D<0.9. In the example, D=
400 [mm], d = 320 [mm], so d/D = 0.8.

第６図は回転翼４の突出部１１の高さＨと円形
ベース１０の直径ｄの比と、布の毎分の上下の入
れ替わり回転及び自動化率の関係を示すグラフ
で、突出部１１の高さが高くなるほど、突出部が
邪魔になつてきて布の上下の入れ替わり回数が減
るが、一方自動化率（脱水時に異常振動が起こら
ずに運転が最終脱水工程まで途中止まらずに自動
的に行なわれる割合）は、突出部１１が高くなる
ほど布が突出部の周囲に均等に分布しやすいので
高くなり、その結果、布の上下入れ替わり回数と
自動化率を共に満足させるようなＨ／ｄは、範囲
Ｂで示す如く0.4＜Ｈ／ｄ＜0.5つまり突出部の高
さＨは円形ベースの直径ｄの約2/1程度というこ
とがわかつた。実施例ではｄ＝320〔mm〕Ｈ＝140
〔mm〕でＨ／ｄ＝0.44である。勿論このようにし
て定めた突出部１１の高さは、洗濯槽１内の水面
よりも突出しない範囲となつている。尚これらの
データは定格負荷量で浴比（洗濯槽内の水の重
さ／布の重さ）＝10で行なつた実験に基づくもの
である。 FIG. 6 is a graph showing the relationship between the ratio of the height H of the protruding part 11 of the rotary blade 4 and the diameter d of the circular base 10, the vertical alternation rotation of the cloth per minute, and the automation rate. As the temperature increases, the protrusions become more of a nuisance, reducing the number of times the fabric is turned upside down, but on the other hand, the automation rate (no abnormal vibration occurs during spin-drying, and the operation continues automatically until the final spin-drying process without stopping) The higher the protrusion 11 is, the easier the fabric is to be evenly distributed around the protrusion, so the ratio becomes higher.As a result, H/d that satisfies both the number of vertical changes of the fabric and the automation rate is within the range B. It was found that 0.4<H/d<0.5, that is, the height H of the protrusion is about 2/1 of the diameter d of the circular base, as shown in the equation. In the example, d=320 [mm] H=140
[mm] H/d=0.44. Of course, the height of the protrusion 11 determined in this way is within a range that does not protrude above the water surface in the washing tub 1. These data are based on experiments conducted at rated load and bath ratio (weight of water in washing tub/weight of fabric) = 10.

以上の如く本考案によれば、洗濯槽１の底部
に、円形ベース１０と、このベースの周縁より中
央へ向つてしだいに突出された略三角柱状の突出
部１１と、この突出部の三角形の各頂点よりベー
スの周縁に向い突設された羽根１２とからなる回
転翼４を配設し、突出部の高さを円形ベースの外
径の2/1程度で洗濯槽の水面よりも突出しない範
囲とし、かかる回転翼を毎分300回転以下の低速
で左右交互に回転させたので、回転翼の布に与え
る衝撃が従来の渦巻式のものに比べ柔らげられ、
しかも突出部１１が三角柱状で且つ水中に沈んで
いるので、この三角柱状部分で乱流を発生させて
布が突出部にからみつかないようにしており、従
来の撹拌式のように撹拌翼にからみついて無理な
引張り力が布に加わると云うことがないようにし
ており、布傷みを少なくできる。 As described above, according to the present invention, the bottom of the washing tub 1 includes a circular base 10, a substantially triangular prism-shaped protrusion 11 that gradually protrudes from the periphery of the base toward the center, and a triangular shape of the protrusion. A rotor blade 4 consisting of a blade 12 is provided that protrudes from each vertex toward the periphery of the base, and the height of the protruding portion is approximately 2/1 of the outer diameter of the circular base and does not protrude above the water surface of the washing tub. As the rotor blades were rotated alternately left and right at a low speed of less than 300 revolutions per minute, the impact on the cloth of the rotor blades was softened compared to the conventional spiral type.
Moreover, since the protruding part 11 is triangular prism-shaped and submerged in water, this triangular prism-shaped part generates turbulent flow to prevent the cloth from getting entangled with the protruding part, and unlike the conventional stirring type, the stirring blades This prevents the cloth from becoming tangled and applying excessive tensile force to the cloth, thereby reducing damage to the cloth.

又回転翼の下部では布を水平方向に回転させ、
回転翼の上部では布を上下に浮き沈みさせる力を
与え、布を一旦洗濯槽側壁に沿つて回転翼の方へ
沈ませその後突出部に沿つて上昇させながら水平
方向にも回転させ、上昇した布は突出部が水中に
沈んで三角柱状になつている関係上、突出部にか
らみつくことなく突出部を簡単に乗り越えること
ができ、全体として上下に大きな動きが発生す
る。 Also, at the bottom of the rotor, the cloth is rotated horizontally,
The upper part of the rotor blade applies a force that causes the cloth to rise and fall up and down, causing the cloth to sink along the side wall of the washing tub toward the rotor blade, and then rise along the protrusion while also rotating horizontally, causing the cloth to rise and fall. Since the protrusion is submerged in the water and has a triangular prism shape, it is possible to easily climb over the protrusion without getting entangled with it, resulting in large vertical movements as a whole.

特に本考案によると、三つの羽根１２が同方向
にゆるやかに曲線を描いて偏向しているので、回
転翼の左右の回転でその発生する水流に差がで
き、偏向している側に回転すると布を上へ浮き上
がらせるような水流が強まり、この結果として布
の上下の入れ替わりが頻繁になり、布傷みが少な
いのにもかかわらず従来の撹拌式に比べ洗いむら
が少なくなつて洗浄力を増大することができる。 In particular, according to the present invention, since the three blades 12 are deflected in the same direction in a gentle curve, there is a difference in the water flow generated when the rotor rotates from side to side. The water flow that lifts the cloth upwards becomes stronger, and as a result, the top and bottom of the cloth are changed more frequently, and although there is less damage to the cloth, there is less uneven washing compared to the conventional agitation type, and the cleaning power is increased. can do.

更に突出部に布がからみつきにくいので、撹拌
式に比べ回転翼の回転時間を長くでき、このこと
からも洗浄力が向上し、又タイマの反転接点や軸
受やモーターに与える悪影響を小さくできる等
種々の優れた効果を奏するものである。 Furthermore, since it is difficult for cloth to get tangled in the protruding parts, the rotation time of the rotor blade can be extended compared to the stirring type, which also improves cleaning power and reduces the negative impact on the timer's reversing contacts, bearings, and motors, etc. It has excellent effects.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の洗濯機を示し、第１図は全体の
縦断面図、第２図は要部拡大縦断面図、第３図は
回転翼の平面図、第４図は第３図−０−線に
基づく断面図、第５図及び第６図は回転翼の寸法
に対する諸特性図である。 １……洗濯槽、１０……ベース、１１……突出
部、１２……羽根、４……回転翼。 The drawings show the washing machine of the present invention; Fig. 1 is an overall longitudinal sectional view, Fig. 2 is an enlarged longitudinal sectional view of main parts, Fig. 3 is a plan view of the rotor blade, and Fig. 4 is Fig. 3-0. 5 and 6 are characteristic diagrams for the dimensions of the rotor blade. 1...Washing tub, 10...Base, 11...Protrusion, 12...Blade, 4...Rotary blade.

Claims (1)

【実用新案登録請求の範囲】 (1) 洗濯槽の底部中央に、円形のベースと、該ベ
ースの周縁より該ベース中央に向かつてしだい
に突出された略三角柱状の突出部と、該突出部
の三角形の各頂点より前記ベースの周縁に向い
突設された羽根とを一体形成し且つ中央部を駆
動モータに連る翼軸に取付けてなる回転翼を配
設し、前記突出部の高さは前記ベースの外径の
2/1程度で且つ洗濯槽内の水面よりも突出しな
い範囲とし、前記各羽根は、前記ベース周縁に
向かつて夫々同方向にゆるやかな曲線を描いて
偏向せしめ、かかる回転翼を300〔r.p.m〕以
下の低速で左右交互に回転させてなる洗濯機。 (2) 前記洗濯槽を脱水槽を兼ねるものとしてなる
実用新案登録請求の範囲第１項記載の洗濯機。[Claims for Utility Model Registration] (1) At the center of the bottom of the washing tub, a circular base, a substantially triangular prism-shaped protrusion that gradually protrudes from the periphery of the base toward the center of the base, and the protrusion A rotary blade is provided, which is integrally formed with blades protruding from each vertex of a triangle toward the periphery of the base, and whose center portion is attached to a blade shaft connected to a drive motor, and the height of the protruding portion is is the outer diameter of the base
The blades are deflected in a gentle curve in the same direction toward the periphery of the base, and the rotor is rotated at 300 [rpm]. A washing machine that rotates left and right alternately at the following low speeds. (2) The washing machine according to claim 1, wherein the washing tub also serves as a dehydration tub.