JPH0755279B2 - Washing machine - Google Patents

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、洗濯機に係り、特に低騒音化に好適な洗濯機
の構造に関する。TECHNICAL FIELD The present invention relates to a washing machine, and more particularly to a structure of a washing machine suitable for reducing noise.

〔従来の技術〕[Conventional technology]

従来の洗濯機は、洗濯機外郭（脚を除いた全ての外装部
品の総称）下端の四隅には、脚もしくは車輪が取り付け
られる構成となつておりその為、洗濯機外郭下端と床面
との間には間隙が形成されていた。この間隙が存在する
ことにより、たとえば接地床面がぬれていても、外郭が
腐食することを防ぎ、かつ、空気の適度の循環を確保す
ることにより、モータの温度上昇をおさえ、使用者が、
より洗濯機の近くで操作できる等、多くの利点がある。
しかし、洗濯機運転時に、この間隙からの音もれが大き
く、そのため著しく開口部の騒音レベルが高くなつてい
た。この種の装置に関連するものとして、特開昭57−37
495号公報が挙げられる。The conventional washing machine has a structure in which legs or wheels are attached to the four corners of the lower end of the washing machine outer shell (a generic term for all exterior parts excluding the legs). A gap was formed between them. Due to the existence of this gap, even if the ground floor surface is wet, for example, the outer shell is prevented from corroding, and a proper circulation of air is ensured, so that the temperature rise of the motor is suppressed and the user is
There are many advantages such as being able to operate closer to the washing machine.
However, when the washing machine was operated, the sound leaked from the gap was large, and the noise level at the opening was extremely high. As a device related to this type of device, Japanese Patent Laid-Open No. 57-37
Japanese Patent No. 495 is cited.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

上記従来技術は、洗濯機の内部と外気との空気の循環が
ないため、内部にモータ等の電気部品より発せられる熱
が篭もり、モータの巻線等の温度が許容値を超え、無視
できない問題となる。さらに、開口部をふさいている防
水パンは床面と接しており、床面が水平でない状態で
は、床面との間で音を発生する恐れがあり、安定性も問
題となる。本発明の目的は、上記従来技術の利点を残
し、さらに、間隙からもれ出る音を遮断することにあ
る。In the above-mentioned conventional technology, since there is no air circulation between the inside of the washing machine and the outside air, the heat generated from electric parts such as the motor stays inside, and the temperature of the winding of the motor exceeds the allowable value and cannot be ignored. Becomes Further, since the waterproof pan covering the opening is in contact with the floor surface, when the floor surface is not horizontal, noise may be generated between the floor and the floor surface, and stability is also a problem. It is an object of the present invention to retain the advantages of the above-mentioned prior art and further to block the sound leaking from the gap.

〔問題点を解決するための手段〕[Means for solving problems]

上記目的は、洗濯機の外郭の下端に、据付床面には接し
ないが、据付床面との距離が外郭の下端巾よりも小さく
なるような板状部材を取り付け、かつ、該板状部材を折
り曲げることにより、つまり、間隙を外郭の下端部の据
付床面に面する巾（ｌ）よりも狭くするように前記外郭
下端に外郭内部方向に前記巾（ｌ）の距離を有する板状
部材を取り付け、かつ、該板状部材は途中略垂直方向に
折れ曲がっているようにすることによつて達成される。The above-mentioned object is to attach a plate-like member which does not contact the installation floor surface to the lower end of the outer shell of the washing machine but has a distance to the installation floor surface smaller than the lower end width of the outer shell, and the plate-shaped member. By bending, that is, a plate-like member having a distance of the width (l) inwardly of the outer shell at the lower end of the outer shell so that the gap is narrower than the width (l) of the lower end of the outer shell facing the installation floor surface. Is attached, and the plate-shaped member is bent in a substantially vertical direction midway.

〔作用〕[Action]

洗濯機の外郭下部に形成される間隙に、床面から下端ま
での距離が、外郭下端の板状部材の巾（ｌ）より小さく
なるように定めた板状部材を前面のみ、あるいは前面と
側面に設けることにより、間隙の高さを最小限にし、か
つ間隙からの音のもれを遮断することができる。それに
よつて、洗濯機全体の騒音レベルが大幅に減少する。し
かも板状部材を折り曲げたので剛性が高まる。In the gap formed in the lower portion of the outer wall of the washing machine, a plate-shaped member whose front-to-bottom surface is lower than the width (l) of the plate-shaped member at the lower edge of the outer wall is provided only on the front surface or the front and side surfaces. The height of the gap can be minimized and the leakage of the sound from the gap can be blocked by providing it in the. Thereby, the noise level of the entire washing machine is significantly reduced. Moreover, since the plate member is bent, the rigidity is increased.

〔実施例〕〔Example〕

以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.

第１図，第２図は、洗濯機の概観図であり、第１図は正
面図、第２図は側面図である。洗濯機外装は、外枠1,ト
ツプカバー3,外枠１を支える脚２より成つており脚２以
外の全ての部品を総称して外郭とよぶ。本実施例におい
ては、外枠１の前面と両側面を脚２の取りつけ位置付近
より内側に折りこみ、さらに内部で間隙をふさぐよう一
体成形した板状部材を設けることにより、音のもれを遮
断している。第３図は、第２図のＡ−Ａ′断面図であ
る。本実施例によれば、折り返し部の長さにより、外郭
と床面との間の間隙の高さを大きくとることができ、使
用者の足の甲が間隙内に入るので使用者が洗濯機に、よ
り近づいて作業することができる。また、デザインの上
でも異和感を与えない。1 and 2 are schematic views of a washing machine, FIG. 1 is a front view, and FIG. 2 is a side view. The washing machine exterior is composed of an outer frame 1, a top cover 3, and legs 2 that support the outer frame 1. All parts other than the legs 2 are collectively called the outer shell. In the present embodiment, the front surface and both side surfaces of the outer frame 1 are folded inward from the vicinity of the mounting position of the legs 2, and a plate-shaped member integrally formed so as to close the gap inside is provided to prevent sound leakage. It is shut off. FIG. 3 is a sectional view taken along the line AA ′ of FIG. According to the present embodiment, the length of the folded portion can increase the height of the gap between the outer shell and the floor surface, and the instep of the user can enter the gap, so that the user can You can work closer to Also, it does not give a sense of strangeness in terms of design.

一般的な洗濯機は、図中の板状部材４がなく外郭１とす
えつけ床面との間には、通風，防さび，除湿を目的とし
た間隙が形成されている。そのため洗濯機運転時の、側
面および前後面の高さ方向の音圧分布は、第８図の如く
測定され、該間隙からもれでる音のレベルが著しく高い
ことがわかる。つまり、洗濯機内部の音は、この間隙よ
りもれでていると考えられる。もれでてくる音の大半
は、モータやクラツチ等の駆動部の音であると考えられ
る。音のもれを遮断するためには、間隙を全閉すること
が最も望ましいが、モータの温度上昇や、外郭の腐食、
内部の湿度上昇によるろう電等、さまざまな問題がひき
おこされる。駆動部の一例としてモータ５をとると、第
２図の如くモータ５は、外郭１から距離Ｌ、高さＨの位
置に取りつけられている。音が直線的に進むと、間隙か
らもれ出る音のほとんどは、矢印で示した部分に含まれ
ている。外郭１の厚さは一様でｌであり、板状部材４の
厚さはｌ′となる。もしｌ＝ｌ′であるとすると、外郭
１の断面と音の入射角θとの関係は、第５図の如くな
る。第５図より、間隙よりもれ出る音の入射角θの最大
値は、 となる。もし、ｈ＝ｌなりθ＝45゜となる。一般的に、
洗濯機は、ＬＨ又は、Ｌ＞Ｈとなるので、θも45゜付
近かそれより小さくなる。従つて、板状部材４の下端と
床面との距離ｈ′を、外郭下端の厚さｌより小さくなる
ように定めれば、常に となり、間隙を残しつつ音のもれを遮断することができ
る。もし、Ｌ＜Ｈでも、問題はない。θ＞45なので、ｌ
＞ｌ′の場合も、第４図に示すように、 の条件を満足すれば音のもれを遮断できる。ただ、外郭
１の板厚ｌをむやみに大きくすることは、現実的ではな
い。第６図のように、外郭下端のみの厚さを増してｌと
考えて、第７図のような断面形状とすれば、第５図と全
く同様に考えることができ、しかも剛性が高まる。ここ
で、洗濯機騒音は主として前面で聞くので、板状部材４
は前面のみに設ければ良いが、モータ，クラツチ等の配
置によつては、側面にも設けた方がよい。また板状部材
４は、外郭１と一体成形品でも、別部材であつても良
い。In a general washing machine, there is no plate-shaped member 4 in the figure, and a gap for ventilation, rust prevention and dehumidification is formed between the outer shell 1 and the floor on which it is installed. Therefore, the sound pressure distribution in the height direction of the side surface and the front and rear surfaces during the washing machine operation is measured as shown in FIG. 8, and it can be seen that the level of sound leaking from the gap is extremely high. In other words, the sound inside the washing machine is considered to be out of this gap. Most of the leaked sound is considered to be the sound of the drive unit such as the motor and the clutch. It is most desirable to completely close the gap in order to block the leakage of sound, but the temperature rise of the motor, corrosion of the outer shell,
Various problems such as brazing electricity caused by internal humidity rise are caused. When the motor 5 is taken as an example of the drive unit, the motor 5 is mounted at a position with a distance L and a height H from the outer shell 1 as shown in FIG. As the sound travels linearly, most of the sound that escapes from the gap is contained in the part indicated by the arrow. The outer shell 1 has a uniform thickness of 1 and the plate member 4 has a thickness of 1 '. If l = 1 ', the relationship between the cross section of the shell 1 and the incident angle θ of sound is as shown in FIG. From Fig. 5, the maximum value of the incident angle θ of the sound that leaks from the gap is Becomes If h = 1 and θ = 45 °. Typically,
Since the washing machine has LH or L> H, θ is also around 45 ° or smaller. Therefore, if the distance h'between the lower end of the plate member 4 and the floor surface is set to be smaller than the thickness l of the outer lower end, Therefore, it is possible to block sound leakage while leaving a gap. If L <H, there is no problem. θ> 45, so l
Also in the case of> l ', as shown in FIG. If the condition of is satisfied, the leakage of sound can be blocked. However, it is not realistic to increase the plate thickness l of the outer shell 1 unnecessarily. If the thickness of only the lower end of the outer shell is increased to be l as shown in FIG. 6 and the cross-sectional shape is as shown in FIG. 7, it can be considered exactly as in FIG. 5, and the rigidity is increased. Here, since the washing machine noise is mainly heard from the front, the plate-shaped member 4
Need only be provided on the front surface, but depending on the arrangement of the motor, clutch, etc., it is better to provide it on the side surface as well. Further, the plate member 4 may be an integrally molded product with the outer shell 1 or may be a separate member.

第９図は前面のみを第５図に示したように、外郭１と同
じ厚さの板状部材４をとりつけた例である。第10図は、
前面および側面の１部に板状部材４を設けた例である。
側面の間隙における板状部材４の占める割合は、駆動部
の配置により若干変化する。いずれの場合でも、遮音効
果は板状部材４の取付け方法や材質にはよらない。つま
り、板状部材４は、取りはずし可能でも、安価な使い捨
て部材でもかまわない。以上示した実施例によれば、い
ずれも数dBの騒音低減効果が得られる。FIG. 9 shows an example in which a plate-like member 4 having the same thickness as the outer shell 1 is attached, as shown in FIG. Figure 10 shows
This is an example in which the plate-shaped member 4 is provided on part of the front surface and the side surface.
The proportion of the plate-shaped member 4 in the side gap varies slightly depending on the arrangement of the drive unit. In any case, the sound insulation effect does not depend on the mounting method or material of the plate member 4. That is, the plate-like member 4 may be removable or an inexpensive disposable member. According to the embodiments described above, the noise reduction effect of several dB can be obtained.

〔発明の効果〕〔The invention's effect〕

本発明によれば、洗濯機内部からもれ出る音を遮断する
ことができるので、洗濯機の騒音を低減する効果があ
る。さらに、洗濯機本体と床面との間には間隙が残され
ているので、内部の温度や湿度の上昇や、外郭や板状部
材等の腐食の問題も最小限にとどめることができる。According to the present invention, it is possible to block the sound leaking from the inside of the washing machine, which has an effect of reducing the noise of the washing machine. Furthermore, since a gap is left between the washing machine main body and the floor surface, problems such as an increase in internal temperature and humidity and corrosion of the outer shell and plate-shaped members can be minimized.

【図面の簡単な説明】[Brief description of drawings]

第１図は、本発明の一実施例を示す正面図、第２図はそ
の側面図、第３図は第２図のＡ−Ａ′断面図である。第
４図は、モータと外郭と板状部材と間隙の位置関係と音
との関係図、第５図から第７図は、音の入射角θと、外
郭下端の厚さと間隙との距離との関係図、第８図は、洗
濯機前面における高さ方向の音圧分布図、第９図，第10
図は、外郭に板状部材をとりつけた例を示す側面図であ
る。 １……外郭、２……脚、３……トツプカバー、４……板
状部材、５……モータ、。1 is a front view showing an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a sectional view taken along the line AA 'in FIG. FIG. 4 is a diagram showing the relationship between the positional relationship between the motor, the outer shell, the plate-shaped member, and the gap and the sound, and FIGS. Fig. 8 is a sound pressure distribution diagram in the height direction on the front of the washing machine, Fig. 9, Fig. 10
The figure is a side view showing an example in which a plate member is attached to the outer shell. 1 ... outer shell, 2 ... legs, 3 ... top cover, 4 ... plate-like member, 5 ... motor.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 内田 満 茨城県日立市東多賀町１丁目１番１号 株 式会社日立製作所多賀工場内 (72)発明者 大杉 寛 茨城県日立市東多賀町１丁目１番１号 株 式会社日立製作所多賀工場内 (72)発明者 石野 孝 茨城県日立市東多賀町１丁目１番１号 株 式会社日立製作所多賀工場内 (72)発明者 山本 裕之 茨城県日立市東多賀町１丁目１番１号 株 式会社日立製作所多賀工場内 (56)参考文献 特開 昭59−49799（ＪＰ，Ａ) 特開 昭57−37495（ＪＰ，Ａ) 実開 昭57−90083（ＪＰ，Ｕ) 実開 昭62−390（ＪＰ，Ｕ) 実公 昭50−5251（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Mitsuru Uchida 1-1-1, Higashitaga-cho, Hitachi-shi, Ibaraki Hitachi Ltd. Taga factory, Ltd. (72) Inventor Hiroshi Osugi 1-1-chome, Higashitaga-cho, Hitachi-shi, Ibaraki No. 1 Incorporated company Hitachi Ltd. in Taga factory (72) Inventor Takashi Ishino 1-1-1 Higashitaga-cho, Hitachi city, Ibaraki Prefecture Incorporated company Hitachi Ltd. in Taga factory (72) Hiroyuki Yamamoto Higashitaga, Hitachi city, Ibaraki prefecture 1-1-1 Machi Co., Ltd. Hitachi Ltd. Taga Factory (56) References JP-A-59-49799 (JP, A) JP-A-57-37495 (JP, A) SAI 57-90083 (JP , U) Actual development Sho 62-390 (JP, U) Actual public Sho 50-5251 (JP, Y2)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】洗濯機の外郭内部の下方に、騒音源となる
槽駆動機構を備え、前記外郭の下端と据付床面との間
に、前記駆動機構からの騒音が外部に放出される間隙を
有する洗濯機において、前記間隙を前記外郭の下端部の
据付床面に面する巾（ｌ）よりも狭くするように、前記
外郭下端内部方向に前記巾（ｌ）の距離を有する板状部
材を取り付け、かつ該板状部材は途中略垂直方向に折れ
曲がっているようにしたことを特徴とする洗濯機。1. A washing machine is provided with a tank driving mechanism below the inside of the outer shell, which serves as a noise source, and a gap between the lower end of the outer shell and the installation floor surface through which noise from the driving mechanism is emitted to the outside. A washing machine having a plate-like member having a distance of the width (l) inward of the lower end of the outer shell so that the gap is narrower than the width (l) of the lower end of the outer shell facing the installation floor surface. The washing machine is characterized in that the plate-like member is bent in a substantially vertical direction on the way.