JPH01158924A - Electric cleaner - Google Patents

Abstract

PURPOSE: To arrest sound by mounting a sound arresting cover with a roundabout air path to lead an exhausted air flow to backward exhausted air path after rounding about once forwards. CONSTITUTION: After covering an electric blower 6 with a sound-shielding cylinder 9, the blower 6 is supported between front and rear separating walls 20, 21, and a rear side buffer 16 is held with the sound-shielding cylinder holding leg 32 of the sound-shielding cover 25, to store the electric blower 6 into a blower storing room. The round about air path 11 in the sound-shielding cover 25 has a simple structure which comprises rounding about once forwards and then moving backwards. Therefore, as exhausted air flow flows smoothly, air path becomes longer and air path sectional area increases with approaching the exhausting opening 29, energy of the exhausted air flow is damped and noise of the exhausted air flow is arrested.

Description

【発明の詳細な説明】 （イ）産業上の利用分野 本発明は遮音筒で覆った電動送風機を有する静音型の電
気掃除機に関する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a silent vacuum cleaner having an electric blower covered with a sound insulating tube.

（ロ）従来の技術 電動送風機の電動機の部分を遮音筒で覆うと共に、遮音
筒から出た排気の通路を迂回させて騒音低下を行ない、
静音化を計るようにした電気掃除機は例えば、実公昭６
０−３６２０５号公報に開示されている。ところがこの
従来技術によれば、迂回のために掃除機不休ケース内壁
に複雑な構成の排気通路を必要とし、排気抵抗が大きく
なって吸込性能を低下させると共に、排気通路が複雑な
ため排気流による新たな騒音を発生させるおそれがある
。(b) Conventional technology The motor part of an electric blower is covered with a sound insulating tube, and the exhaust passage exiting from the sound insulating tube is detoured to reduce noise.
For example, a vacuum cleaner designed to reduce noise was developed in 1986.
It is disclosed in Japanese Patent No. 0-36205. However, according to this conventional technology, a complicated exhaust passage is required on the inner wall of the vacuum cleaner case for detouring, which increases exhaust resistance and reduces suction performance. There is a risk of generating new noise.

（ハ）発明が解決しようとする問題点 本発明は単純な構造の排気風迂回風路を送風機収納室内
に備えることにより、簡単な構成で排気流がスムーズに
排気されるようにして吸込性能を低下させることなく静
音化を計った電気掃除機を得ることを目的としている。(c) Problems to be Solved by the Invention The present invention improves suction performance by providing an exhaust air detour with a simple structure in the blower storage chamber so that the exhaust flow can be exhausted smoothly with a simple structure. The objective is to obtain a vacuum cleaner that is quieter without any noise reduction.

に）問題点を解決するための手段 本発明の電気掃除機の構成は、図面に示すように、１！
助送送風を遮音筒で覆ってＷ６除機本体ケースの送風機
収納室内に収納するものにおいて、前記本体ケースは後
壁に排気口を有すると共に該後壁と前記遮音筒の後部を
支持する仕切壁との間に排気通路を形成し、前記送風機
収納室内の上部には、前記遮音筒から排出される前記電
動送風機の排気流を一旦前方に迂回させた後前記排気通
路に導く迂回風路を有した遮音カバー休を備えたことを
特徴としている。2) Means for Solving the Problems The structure of the vacuum cleaner of the present invention is as shown in the drawings: 1!
In the case where the auxiliary air is covered with a sound insulating tube and stored in the blower storage chamber of the W6 remover main body case, the main body case has an exhaust port on a rear wall and a partition wall that supports the rear wall and the rear part of the sound insulating tube. an exhaust passage is formed between the air blower storage chamber and the air blower storage chamber, and a detour air passage is provided in the upper part of the blower storage chamber to divert the exhaust flow of the electric blower discharged from the sound insulation tube forward and then guide it to the exhaust passage. It is characterized by a sound insulation cover.

（ホ）作　用 上記の構成により、電動送風機の作動にともない、排気
流は電動送風機から遮音筒に一旦入り、その後遮音筒か
ら送風機収納室内に入り、上部に配置された遮音カバー
体内の迂回風路により一旦、前方に迂回された後後方に
移動しさらに下方に移動してスムーズに通過した後排気
通路に入り、その後後壁の排気口から掃除機外に排出さ
れる。このとき、遮音カバー休は排気流を一旦前方に迂
回した後後方に移動する単純な構造の迂回風路を有して
おり、該迂回風路により排気流はスムーズに流れ、且つ
風路が長くなるので排気流の騒音が消音される。さらに
送風機収納室内の上部に遮音カバー休が備えられている
ので、遮音カバー休と本体ケースとの二重壁構成により
迂回風路から本体ケース外に排気流による騒音が伝達さ
れにくくなる。(E) Effect With the above configuration, when the electric blower operates, the exhaust flow from the electric blower enters the sound insulation cylinder once, and then enters the blower storage room from the sound insulation cylinder, and the detour air inside the sound insulation cover body arranged at the top. The air is once diverted forward by the path, then moves backward, moves further downward, passes smoothly, enters the exhaust passage, and is then discharged to the outside of the vacuum cleaner from the exhaust port on the rear wall. At this time, the sound insulation cover has a detour air path with a simple structure that detours the exhaust flow forward and then moves it rearward, and the detour air flow allows the exhaust flow to flow smoothly and the air path is long. As a result, the noise of the exhaust flow is muffled. Furthermore, since the sound insulating cover is provided at the upper part of the blower storage chamber, the double wall structure of the sound insulating cover and the main body case makes it difficult for noise caused by the exhaust flow to be transmitted from the detour air path to the outside of the main body case.

（へ）実施例 以下、本発明電気掃除機の構成を＠１図〜第６図に基い
て説明する。(f) Example The structure of the vacuum cleaner of the present invention will be explained below with reference to FIGS. 1 to 6.

ｉｌ＋は掃除機本体の本体ケースで、曲部には蓋体（２
）で開閉される集塵室（３）を備え、後部には該集塵室
（３）に連通ずる送風機収納室（４）と、該送風機収納
室（４）の創部に並設されるコードリール収納室＋５）
とを設けである。il+ is the main body case of the vacuum cleaner, and the bent part has a lid (2
), and a blower storage chamber (4) that communicates with the dust collection chamber (3) at the rear, and a cord installed in parallel to the wound area of the blower storage chamber (4). Reel storage room +5)
This is provided.

１６）は電動送風機で、モータｉ７１を後部に、該モー
タ（７）の回転軸に取り付けられる遠心型ファンを内装
したファンケース（８）を前部に、夫々配設しである０ （９）は前記送風機ｊ６１を覆う遮音筒で、該遮音筒（
９）は前記ファンケース（８）を覆う前部覆い筒ｔ１０
１と前記モータ（７）ｔ−覆う後部覆い筒（１１）とに
分割構成され、前部覆い筒（ｌ（２）の分割開口面から
突出した係止爪を後部覆い筒（７）の分割開口縁に設け
た係止突部に掛は止めることによって一体化されている
。16) is an electric blower, with a motor i71 installed at the rear and a fan case (8) containing a centrifugal fan attached to the rotating shaft of the motor (7) installed at the front.0 (9) is a sound insulating tube that covers the blower j61, and the sound insulating tube (
9) is a front cover tube t10 that covers the fan case (8).
1 and a rear cover tube (11) that covers the motor (7). It is integrated by being hooked onto a locking protrusion provided on the edge of the opening.

前記前部覆い筒（ｌＯ）の前底面には吸気用開口（１乃
が穿設しである。The front bottom surface of the front cover cylinder (lO) is provided with an intake opening (1).

賭は環状の合成ゴム製送風機緩衝体で、前部覆い簡明を
前記ファンケース（８）に保持している０前記後部覆い
筒（ｌすの同側壁下部には排気噴出用の排気用開口０４
を穿設すると共に後底面中央には保持用開口Ｑ０を穿設
しである。The mechanism is an annular synthetic rubber blower buffer, and there is an exhaust opening 04 at the bottom of the same side wall of the rear cover tube (l) that holds the front cover tube in the fan case (8).
A holding opening Q0 is also bored in the center of the rear bottom surface.

Ｈは前記モータ（７）の後部軸受αηに被さる合成ゴム
製後側緩衝体で、中央支持孔ｔ−前記後部軸受０ηに嵌
め込むと共に前記後部覆い筒（川の保持用開口Ｏｆ９に
嵌め込まれて保持され且つ開口（１５）から突出する突
出部Ｃ１ｌを有している。H is a rear shock absorber made of synthetic rubber that covers the rear bearing αη of the motor (7), and is fitted into the central support hole T-the rear bearing 0η, and is also fitted into the rear cover cylinder (the holding opening Of9 of the river). It has a protrusion C1l that is held and protrudes from the opening (15).

α燵は前記Ｉｒ１部覆い筒（ｌＯ）に嵌め込む環状の合
成ゴム製前側緩衝体である。The α-ring is an annular front shock absorber made of synthetic rubber that is fitted into the Ir 1-part cover tube (lO).

（社）は前記送風機収納室（４）の前部の前側仕切壁、
則は後側仕切壁で、本体ケース１１）底壁に基端を固定
して立設すると共に前記後側緩衝体Ｑｌｌの突出部ＯＳ
＋を嵌め込んで支持するようになっている。(Company) is a front partition wall at the front of the blower storage room (4),
The rule is that the rear partition wall is erected with its base end fixed to the bottom wall of the main body case 11), and the protrusion OS of the rear shock absorber Qll is
It is designed to be supported by inserting +.

固は前記本体ケースｎ）の後壁（支）に穿設した排気口
である。そして前記後壁−と前記後側仕切壁（２υとの
間に排気通路例を形成している。The solid part is an exhaust port bored in the rear wall (support) of the main body case n). An example exhaust passage is formed between the rear wall and the rear partition wall (2υ).

（２四は前記送風機収納室（４）内の上部に配設される
遮音カバー体で、該遮音カバー体四は、長方箱体形状で
、前剣底面弼を後側底面（ロ）より下方にずらせること
により箱体に対して前向きの流入開口１２Ｂを形成する
と共に前記排気通路（２４）の上部に位置する流出開口
（２ｇｌｆｔ後方に形成することにより排気流が前記流
入開口（ハ）から−旦前方に流入した後後側底面にηと
上壁面図との間を後方に通過して前記流出開口−から下
向きに排出するように構成した迂回風路３υを有してお
り、さらに前記後側底面（財）と上壁面図との間の風路
断面積より前記流出開口ｅ２９１の風路断面積を広くす
ることにより消音効果を高めるように構成している。さ
らにに）は前記遮音カバー休ｔ２５１に下向きに設けた
遮音筒保持脚で、下端には前記後側緩衝体Ｈの突出ｓａ
樽に上方から嵌め込み固定するための半円状切欠Ｑを有
しており、また（口）・・・は前記遮音カバー休□□□
の側壁に設けた固定リブである。(24 is a sound insulating cover body disposed in the upper part of the blower storage chamber (4), and the sound insulating cover body 4 has a rectangular box shape, with the bottom of the front sword facing upward from the bottom of the rear side (b). By shifting it downward, an inflow opening 12B facing forward with respect to the box body is formed, and by forming an outflow opening (2glf) located at the upper part of the exhaust passage (24) at the rear, the exhaust flow is directed to the inflow opening (c). It has a detour air path 3υ configured to flow in from the front, pass backward between η and the upper wall surface, and then discharge downward from the outflow opening. The noise reduction effect is enhanced by making the air passage cross-sectional area of the outflow opening e291 wider than the air passage cross-sectional area between the rear bottom surface and the top wall surface. The sound insulating cylinder holding leg is provided downward on the sound insulating cover t251, and the protrusion sa of the rear shock absorber H is attached to the lower end.
It has a semicircular notch Q for fitting and fixing into the barrel from above, and (mouth)... is the sound insulation cover rest □□□
This is a fixed rib provided on the side wall of the

そして前記電動送風機（６）を前記遮音筒（９）で覆っ
て前記前側仕切壁−と後側仕切壁伐υとの間に支持する
と共に、前記遮音カバー休（至）の遮音筒保持脚（至）
で後側緩衝体ａＱを保持することによって、前記電動送
風機ｉ６）を送風機収納室（４）内に収納するものであ
る。The electric blower (6) is covered with the sound insulating tube (9) and supported between the front partition wall and the rear partition wall, and the sound insulating tube holding leg (when the sound insulating cover is closed) To)
By holding the rear shock absorber aQ, the electric blower i6) is stored in the blower storage chamber (4).

（７）は電源コードを巻き取り収納するためのコードリ
ールで、前記コードリール収納型（５）に回動自在に軸
支収納しである。(7) is a cord reel for winding and storing the power cord, which is rotatably supported and stored in the cord reel storage type (5).

吸入された空気は、集塵室（３）内のフィルター装置へ （図示せず）によってろ過されて、空気のみが電動送風
機１６）内に吸い込まれ、モータ（７）の排気口から遮
音筒；９）内に排気され、この排気流は遮音筒（９）に
下向きに投けられた排気用開口Ｉから前後の仕切剰１０
間で形成された空間に下向きに噴出され、底壁に当って
屈曲して上向きに流れる。このとき、遮音筒（９）の形
状が略円柱状のため流路断面はゆるやかに変化し、いわ
ゆるディフュザー効果を生み出し、排気圧力を減衰させ
ている。このようにして上向きに流れた排気流は流入開
口？樽から遮音カバー休□□□に前向きに流入し、その
後迂回風路０υを後向きに流れて流出開口四から下向き
に排出され、排気通路（２４Ｊから排気口□□□を介し
て外部に排出される。ここで、前記遮音カバー体（至）
内の迂回風路３υは排気流を一旦前方に迂回した後、後
方に移動する単純な構造であるから排気流はスムーズに
流れ、且つ風路が長くなると共に風路断面積が流出開口
−に近付くにつれて大きくなるので排気流のエネルギー
が減衰され、排気流の騒音が消音される。The inhaled air is filtered by a filter device (not shown) in the dust collection chamber (3), and only the air is sucked into the electric blower 16), and from the exhaust port of the motor (7) to the sound insulating tube; 9), and this exhaust flow flows through the front and rear partitions 10 from the exhaust opening I thrown downward into the sound insulating tube (9).
It is ejected downward into the space formed between them, hits the bottom wall, bends, and flows upward. At this time, since the shape of the sound insulating tube (9) is substantially cylindrical, the cross section of the flow path changes gradually, creating a so-called diffuser effect and attenuating the exhaust pressure. Is the exhaust flow that flows upward in this way an inflow opening? It flows forward from the barrel into the sound insulation cover □□□, then flows backward through the detour air passage 0υ, is discharged downward from the outflow opening 4, and is discharged to the outside from the exhaust passage (24J) via the exhaust port □□□. Here, the sound insulation cover body (to)
The inner detour air passage 3υ has a simple structure in which the exhaust flow detours forward and then moves backward, so the exhaust flow flows smoothly, and as the air passage becomes longer, the cross-sectional area of the air passage becomes smaller than the outflow opening. As it gets closer, the energy of the exhaust flow is attenuated and the noise of the exhaust flow is muffled.

さらに、送風機収納室（４）内の上部に遮音カバー体四
が備えられているので、遮音カバー休□□□と本体ケー
スｆ１＋との二重壁構成により迂回風路例から本体ケー
スｆｉｌ外に排気流による騒音が伝達されにくくなる。Furthermore, since the sound insulation cover body 4 is provided at the upper part of the blower storage chamber (4), the double wall structure of the sound insulation cover h Noise from the exhaust flow is less likely to be transmitted.

従って電気掃除機の静音化が達成される。Therefore, the vacuum cleaner can be made quieter.

さらに第６図は騒音の周波数分析図で同図において右側
のＡ、Ｂ、ＣはＪＩＳ規格に基いて測定した各特性を示
しており、（イ）は本発明の遮音カバー休を収り付けた
状態を示し、（ロ）は同カバー体を取り付けない状態を
示しているが、同図からもわかるように特に５００Ｈｚ
以上の周波数における騒音が激減しており、静音化を達
成している。Furthermore, Fig. 6 is a frequency analysis diagram of noise. A, B, and C on the right side of the figure show each characteristic measured based on the JIS standard, and (A) shows the characteristics measured based on the sound insulation cover of the present invention. (b) shows the state without the cover attached, but as can be seen from the figure, especially at 500 Hz.
Noise at the above frequencies has been drastically reduced, achieving quietness.

（ト）発明の効果 本発明は以上の如く構成しており、電動送風機は遮音筒
で覆われると共にこの電動送風機を収納する送風機収納
室内には電動送風機からの排気流を一旦前方に迂回させ
た後後方の排気通路に導く迂回風路を有した遮音カバー
休を備えているので、排気流は遮音カバー体内で単純な
構造の長い迂回風路を抵抗なくスムーズに流れ、且つ排
気流の騒音が長い迂回風路の通過により消音される０さ
らに送風機収納室に遮音カバー体が備えられ、遮音カバ
ー休と本体ケースとの二重壁構成により迂回風路を通過
する排気流による騒音が本体ケース外に伝達されない。(g) Effects of the Invention The present invention is constructed as described above, and the electric blower is covered with a sound insulating tube, and the exhaust flow from the electric blower is once detoured forward in the blower storage chamber that houses the electric blower. Since the sound insulation cover is equipped with a detour air passage leading to the rear exhaust passage, the exhaust flow smoothly flows through the long detour air passage with a simple structure inside the sound insulation cover body without resistance, and the noise of the exhaust flow is reduced. Noise is muffled by passing through the long detour air path.Furthermore, the blower storage chamber is equipped with a sound insulating cover body, and the double wall structure of the sound insulating cover and the main body case prevents noise from the exhaust flow passing through the detour air path from outside the main body case. is not transmitted.

従って排気流の騒音のない、静音化を計った、且つ吸込
性能を低下させることのない電気掃除機を得ることがで
きる０Therefore, it is possible to obtain a vacuum cleaner that has no exhaust flow noise, is quiet, and does not reduce suction performance.

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

図面は本発明電気掃除機に関し、第１図は一部切欠平面
図、第２図は一部切欠正面図、ｇＳ３図は要部切欠側面
図、第４図Ｆｉ、Ｐ、音カバー体の斜視図、第５図は遮
音カバー体の底面図、第６図は騒音の周波数分析図であ
る。 １１）・・・掃除機本体ケース、（４）・・・送風機収
納室、（６）・・・電動送、に機、（財）・・・排気通
路、ｒ２ＦＡ−・・遮音カックー体、３υ・・・迂回風
路。The drawings relate to the vacuum cleaner of the present invention; Fig. 1 is a partially cutaway plan view, Fig. 2 is a partially cutaway front view, gS3 is a cutaway side view of main parts, and Fig. 4 is a perspective view of Fi, P, and the sound cover body. 5 is a bottom view of the sound insulating cover body, and FIG. 6 is a frequency analysis diagram of noise. 11)...Vacuum cleaner body case, (4)...Blower storage room, (6)...Electric blower, Niki, (Foundation)...Exhaust passage, r2FA-...Sound insulating cuckoo body, 3υ ...Detour wind route.

Claims (1)

【特許請求の範囲】[Claims] （１）電動送風機を遮音筒で覆って掃除機本体ケースの
送風機収納室内に収納するものにおいて、前記本体ケー
スは後壁に排気口を有すると共に該後壁と前記遮音筒の
後部を支持する仕切壁との間に排気通路を形成し、前記
送風機収納室内の上部には、前記遮音筒から排出される
前記電動送風機の排気流を一旦前方に迂回させた後前記
排気通路に導く迂回風路を有した遮音カバー体を備えた
ことを特徴とする電気掃除機。(1) In a device in which an electric blower is covered with a sound insulating tube and stored in a blower storage chamber of a vacuum cleaner main body case, the main body case has an exhaust port on a rear wall and a partition that supports the rear wall and the rear part of the sound insulating tube. An exhaust passage is formed between the wall and the blower storage chamber, and a detour air passage is provided in the upper part of the blower storage chamber to once detour the exhaust flow of the electric blower discharged from the sound insulation tube forward and then guide it to the exhaust passage. A vacuum cleaner characterized by being equipped with a sound insulating cover body.