JP2012067691A - Soundproof structure of electric blower and vacuum cleaner - Google Patents

Soundproof structure of electric blower and vacuum cleaner Download PDF

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JP2012067691A
JP2012067691A JP2010213730A JP2010213730A JP2012067691A JP 2012067691 A JP2012067691 A JP 2012067691A JP 2010213730 A JP2010213730 A JP 2010213730A JP 2010213730 A JP2010213730 A JP 2010213730A JP 2012067691 A JP2012067691 A JP 2012067691A
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electric blower
soundproof
fan case
exhaust port
soundproof material
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JP5536599B2 (en
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Koji Ueda
浩司 上田
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Sharp Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a soundproof structure of an electric blower, which can improve a soundproof effect without increasing the number of man-hours and the number of parts.SOLUTION: There is provided the soundproof structure of the electric blower 30 in which a soundproof material 35 covering an exhaust port 32b is arranged around the electric blower 30 where a motor 31 is arranged in a cylindrical fan case 32 with the exhaust port 32b being opened on the peripheral surface. A projection part 33 projecting to the peripheral surface of the fan case 32 is arranged and an insertion part 35a formed on the soundproof material 35 is inserted into the projection part 33 for spirally winding the soundproof material 35 on the peripheral surface of the fan case 32.

Description

本発明は、電動送風機の周面に防音材を配した電動送風機の防音構造及びそれを用いた電気掃除機に関する。   The present invention relates to a soundproof structure for an electric blower in which a soundproofing material is arranged on a peripheral surface of the electric blower, and a vacuum cleaner using the same.

従来の電気掃除機は特許文献1に開示されている。この電気掃除機は吸込気流を発生させる電動送風機が本体部内に配され、電動送風機の前方には塵埃を集塵する集塵室が配される。電動送風機は羽根車及びモータをファンケースにより覆って構成される。ファンケースの軸方向の端面には吸気口が開口し、周面には排気口が開口する。   A conventional vacuum cleaner is disclosed in Patent Document 1. In this vacuum cleaner, an electric blower that generates a suction airflow is arranged in the main body, and a dust collection chamber for collecting dust is arranged in front of the electric blower. The electric blower is configured by covering an impeller and a motor with a fan case. An intake port is opened at the end surface in the axial direction of the fan case, and an exhaust port is opened at the peripheral surface.

ファンケースの周面にはウレタンフォーム等の吸音性を有した弾性体の防音材が配される。防音材は一方向に延びた板状に形成され、両端が連結される。これにより、環状に形成された防音材に電動送風機が挿入され、排気口が防音材により覆われる。   An elastic soundproofing material having sound absorbing properties such as urethane foam is disposed on the peripheral surface of the fan case. The soundproof material is formed in a plate shape extending in one direction, and both ends are connected. Thus, the electric blower is inserted into the annular soundproof material, and the exhaust port is covered with the soundproof material.

電動送風機の駆動によって集塵室内に負圧が発生し、塵埃を含む気流が集塵室に流入する。塵埃は集塵室で集塵され、塵埃を除去された気流が吸気口からファンケースに流入して排気口から排気される。排気口の排気は防音材を通過して本体部から流出する。これにより、電動送風機の騒音を低減することができる。   A negative pressure is generated in the dust collection chamber by driving the electric blower, and an air flow containing dust flows into the dust collection chamber. Dust is collected in the dust collection chamber, and the airflow from which the dust has been removed flows into the fan case from the intake port and is exhausted from the exhaust port. The exhaust from the exhaust port passes through the soundproofing material and flows out from the main body. Thereby, the noise of an electric blower can be reduced.

特開平11−99098号公報(第2頁−第4頁、第3図)JP-A-11-99098 (2nd page-4th page, Fig. 3)

上記従来の電気掃除機によると、環状に形成された防音材に電動送風機が挿入される。このため、防音効果の向上のために防音材を厚く形成すると、柔軟性が低下して容易に環状に形成できない。従って、防音構造を形成する工数が増加する問題があった。また、複数の環状の防音材を径方向に重ねて設けると、防音材の挿入作業が増加して工数が増加するとともに、径の異なる複数の防音材を必要とするため部品点数が増加する問題もあった。   According to the conventional electric vacuum cleaner, the electric blower is inserted into the annular soundproof material. For this reason, if the soundproofing material is formed thick in order to improve the soundproofing effect, the flexibility is lowered and it cannot be easily formed into an annular shape. Therefore, there is a problem that the number of steps for forming the soundproof structure increases. In addition, when a plurality of annular soundproofing materials are provided to overlap in the radial direction, the insertion work of the soundproofing material increases and the number of man-hours increases, and the number of parts increases because a plurality of soundproofing materials with different diameters are required. There was also.

本発明は、工数及び部品点数を増加させずに防音効果を向上できる電動送風機の防音構造及びそれを用いた電気掃除機を提供することを目的とする。   An object of this invention is to provide the soundproof structure of the electric blower which can improve a soundproofing effect, without increasing a man-hour and a number of parts, and a vacuum cleaner using the same.

上記目的を達成するために本発明は、周面に排気口を開口した筒状のファンケース内にモータを配した電動送風機の周囲に前記排気口を覆う防音材を配した電動送風機の防音構造において、前記ファンケースの周面に突出する突出部を設け、前記防音材に形成した挿通部を前記突出部に挿通して前記ファンケースの周面に前記防音材を渦巻状に巻回したことを特徴としている。   In order to achieve the above object, the present invention provides a soundproof structure for an electric blower in which a soundproof material covering the exhaust port is disposed around an electric blower in which a motor is disposed in a cylindrical fan case having an exhaust port opened on a peripheral surface. A projecting portion projecting on the peripheral surface of the fan case is provided, and an insertion portion formed on the soundproof material is inserted into the projecting portion, and the soundproof material is wound around the peripheral surface of the fan case in a spiral shape. It is characterized by.

この構成によると、電動送風機はファンケースで覆われ、ファンケースの周面に板状の防音材が渦巻状に巻回される。これにより、ファンケースの周面に開口する排気口が防音材により覆われる。この時、ファンケースの周面には突出部が突出して設けられ、防音材に設けた挿通部に突出部を挿通して防音材が巻回される。   According to this configuration, the electric blower is covered with the fan case, and the plate-like soundproof material is wound around the peripheral surface of the fan case in a spiral shape. Thereby, the exhaust port opened to the surrounding surface of a fan case is covered with a soundproof material. At this time, the protrusion is provided on the peripheral surface of the fan case so that the soundproof material is wound around the insertion portion provided in the soundproof material.

また本発明は、上記構成の電動送風機の防音構造において、前記電動送風機がブラシを有する整流子モータを備え、前記突出部が前記ブラシを収納するブラシホルダから成ることを特徴としている。   According to the present invention, in the soundproof structure of the electric blower configured as described above, the electric blower includes a commutator motor having a brush, and the protrusion includes a brush holder that houses the brush.

また本発明は、上記構成の電動送風機の防音構造において、前記挿通部が周囲を閉じた貫通孔から成ることを特徴としている。   According to the present invention, in the soundproof structure for an electric blower having the above-described configuration, the insertion portion is formed of a through hole having a closed periphery.

また本発明は、上記構成の電動送風機の防音構造において、前記防音材が巻回によって前記ファンケースの全周にわたり複数層に積層されることを特徴としている。   According to the present invention, in the soundproof structure of the electric blower configured as described above, the soundproof material is laminated in a plurality of layers over the entire circumference of the fan case by winding.

また本発明は、上記構成の電動送風機の防音構造において、前記排気口に面した前記防音材の積層数に対して前記排気口から離れた位置の前記防音材の積層数が少ないことを特徴としている。この構成によると、排気口の排気は防音材の内部を周方向に流通し、積層数の少ない位置から外部に放出される。   Further, the present invention is characterized in that, in the soundproof structure of the electric blower having the above-described configuration, the number of the soundproof materials stacked at a position away from the exhaust port is smaller than the number of the soundproof materials stacked facing the exhaust port. Yes. According to this configuration, the exhaust from the exhaust port circulates in the circumferential direction inside the soundproof material and is discharged to the outside from a position where the number of stacked layers is small.

また本発明の電気掃除機は、上記各構成の電動送風機の防音構造を備えたことを特徴としている。   Moreover, the vacuum cleaner of the present invention is characterized by including the soundproof structure of the electric blower having the above-described configuration.

本発明によると、防音材に形成した挿通部をファンケースの突出部に挿通してファンケースの周面に防音材を渦巻状に巻回したので、柔軟性を有する薄い一の防音材を容易に変形して一周よりも長い範囲に巻き付けることができる。この時、挿通部に突出部を挿通するため、防音材の回転を防止して作業性が向上するとともに、防音材とファンケースとの間の隙間の発生を防止することができる。従って、電動送風機の防音構造の工数及び部品点数を増加させることなく防音効果を向上することができる。   According to the present invention, since the soundproof material is spirally wound around the peripheral surface of the fan case by inserting the insertion portion formed in the soundproof material into the protruding portion of the fan case, it is easy to make one thin soundproof material having flexibility. And can be wound around a range longer than one round. At this time, since the protruding portion is inserted into the insertion portion, it is possible to prevent rotation of the soundproofing material and improve workability, and to prevent generation of a gap between the soundproofing material and the fan case. Therefore, the soundproofing effect can be improved without increasing the number of steps and the number of parts of the soundproofing structure of the electric blower.

本発明の実施形態の電気掃除機を示す斜視図The perspective view which shows the vacuum cleaner of embodiment of this invention 本発明の実施形態の電気掃除機の本体部を示す側面断面図Side surface sectional drawing which shows the main-body part of the vacuum cleaner of embodiment of this invention 本発明の実施形態の電気掃除機の電動送風機を示す斜視図The perspective view which shows the electric blower of the vacuum cleaner of embodiment of this invention 本発明の実施形態の電気掃除機の電動送風機を示す上面断面図Top surface sectional drawing which shows the electric blower of the vacuum cleaner of embodiment of this invention 本発明の実施形態の電気掃除機の防音材を示す平面図The top view which shows the soundproof material of the vacuum cleaner of embodiment of this invention

以下に本発明の実施形態を図面を参照して説明する。図1は一実施形態の電気掃除機を示す斜視図である。電気掃除機1は電動送風機30(図2参照)を内装する本体部2を備えている。本体部2の背面には引き出し及び収納が可能な電源コード8が設けられる。電源コード8は電源プラグ9を先端に有し、商用電源のコンセントに差し込んで本体部2に電力供給される。   Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a vacuum cleaner according to an embodiment. The vacuum cleaner 1 includes a main body 2 that houses an electric blower 30 (see FIG. 2). A power cord 8 that can be pulled out and stored is provided on the back surface of the main body 2. The power cord 8 has a power plug 9 at its tip, and is supplied to the main unit 2 by being inserted into a commercial power outlet.

本体部2の前面には可撓性の接続ホース3が接続され、接続ホース3の先端には延長パイプ4が接続される。延長パイプ4の先端には床面に対峙する吸込口(不図示)を有した吸込口体5が設けられる。また、延長パイプ4にはパイプ把持部13及び操作部14が設けられる。使用者により操作部14を操作して掃除運転が実行され、パイプ把持部13を把持して吸込口体5を移動させることができる。   A flexible connection hose 3 is connected to the front surface of the main body 2, and an extension pipe 4 is connected to the tip of the connection hose 3. A suction port body 5 having a suction port (not shown) facing the floor surface is provided at the tip of the extension pipe 4. The extension pipe 4 is provided with a pipe gripping portion 13 and an operation portion 14. A cleaning operation is performed by operating the operation unit 14 by a user, and the suction port body 5 can be moved by gripping the pipe gripping portion 13.

図2は本体部2の側面断面図を示している。本体部2は樹脂成形品の本体カバー10により覆われる。本体カバー10の前面には接続ホース3(図1参照)を接続する接続口10aが開口し、背面には本体排気口10bが開口する。   FIG. 2 shows a side sectional view of the main body 2. The main body 2 is covered with a main body cover 10 of a resin molded product. A connection port 10a for connecting the connection hose 3 (see FIG. 1) is opened on the front surface of the main body cover 10, and a main body exhaust port 10b is opened on the rear surface.

本体部20の前部には塵埃を集塵する集塵部20が配される。集塵部20は集塵容器22及びフィルタ37を備え、把持部41を把持して本体カバー10から着脱自在に形成される。集塵容器22の周面には接続口10aに連通する流入口22aが設けられる。流入口22aは集塵容器22内に旋回気流を形成するように気流を流入させる。集塵部20の上部には背面に集塵部排気口42aを開口する排気流路42が設けられる。   A dust collection unit 20 that collects dust is disposed in front of the main body unit 20. The dust collection unit 20 includes a dust collection container 22 and a filter 37, and is formed so as to be detachable from the main body cover 10 by gripping the grip unit 41. An inflow port 22 a communicating with the connection port 10 a is provided on the peripheral surface of the dust collection container 22. The inflow port 22a allows an air flow to flow into the dust collecting container 22 so as to form a swirling air flow. An exhaust passage 42 that opens a dust collector exhaust port 42 a is provided on the back surface of the dust collector 20.

本体部2の後部には防音材35(図4参照)を周囲に配した電動送風機30が配される。電動送風機30の上部には合成ゴム等から成る緩衝体18を介して開口面を下方に配したカップ状のハウジング16が被嵌される。緩衝体18によって電動送風機30の振動吸収及び気流路の気密性向上が図られる。   An electric blower 30 having a soundproofing material 35 (see FIG. 4) disposed around the rear of the main body 2 is disposed. A cup-shaped housing 16 having an opening face disposed downward is fitted over the electric blower 30 via a buffer 18 made of synthetic rubber or the like. The shock absorber 18 can absorb vibration of the electric blower 30 and improve the airtightness of the air flow path.

ハウジング16の上面には孔部16aが開口し、孔部16aと集塵部排気口42aとを連結するダクト15が設けられる。ハウジング16の前部には本体カバー10の内面に設けたリブ10dに係合する係合部16bが形成される。ハウジング16の後部には本体カバー10にネジ止めされるネジ部16cが形成される。   A hole 16a is opened on the upper surface of the housing 16, and a duct 15 that connects the hole 16a and the dust collecting portion exhaust port 42a is provided. An engaging portion 16 b that engages with a rib 10 d provided on the inner surface of the main body cover 10 is formed at the front portion of the housing 16. A screw portion 16 c that is screwed to the main body cover 10 is formed at the rear portion of the housing 16.

電動送風機30の上部を覆うハウジング16には電動送風機30の下方を覆うハウジング17が係着される。ハウジング17は電動送風機30の下端を支持し、前部に設けた係合部17aが本体カバー10の内面に係合する。   A housing 17 that covers the lower portion of the electric blower 30 is engaged with the housing 16 that covers the upper portion of the electric blower 30. The housing 17 supports the lower end of the electric blower 30, and the engaging portion 17 a provided at the front portion is engaged with the inner surface of the main body cover 10.

図3は電動送風機30の斜視図を示している。また、図4は防音材35を配した電動送風機30の上面断面図を示している。電動送風機30はモータ31のモータ軸31aに羽根車(不図示)が接続され、筒状のファンケース32により覆われる。羽根車を収納するファンケース32の上部のファン部32cはモータ31を収納する下部のモータ部32dに対して径方向に大きく形成される。ファン部32cの軸方向の端面には吸気口32aが開口し、モータ部32dの周面には排気口32bが開口する。   FIG. 3 shows a perspective view of the electric blower 30. FIG. 4 shows a top sectional view of the electric blower 30 provided with the soundproof material 35. In the electric blower 30, an impeller (not shown) is connected to a motor shaft 31 a of a motor 31 and is covered with a cylindrical fan case 32. The upper fan part 32 c of the fan case 32 that houses the impeller is formed larger in the radial direction than the lower motor part 32 d that houses the motor 31. An intake port 32a is opened at the axial end surface of the fan portion 32c, and an exhaust port 32b is opened at the peripheral surface of the motor portion 32d.

モータ31はブラシ31eを有する整流子モータから成っている。モータ31の外周部にはステータ31cが配され、モータ軸31aを有するロータ31bがステータ31cの内周側に対向配置される。ロータ31bは整流子31dを有し、ファンケース32の周面に突設したブラシホルダ33に収納されるブラシ31eが整流子31dに接して配される。ブラシホルダ33はファンケース32の周面から突出する突出部を構成する。   The motor 31 is a commutator motor having a brush 31e. A stator 31c is disposed on the outer peripheral portion of the motor 31, and a rotor 31b having a motor shaft 31a is disposed opposite to the inner peripheral side of the stator 31c. The rotor 31b has a commutator 31d, and a brush 31e accommodated in a brush holder 33 protruding from the peripheral surface of the fan case 32 is disposed in contact with the commutator 31d. The brush holder 33 constitutes a protruding portion that protrudes from the peripheral surface of the fan case 32.

モータ部32dの周囲には排気口32bを覆う防音材35が配される。図5は防音材35の平面図を示している。防音材35はウレタンフォーム等の吸音性を有した弾性体から成り、一方向に延びて形成される。防音材35にはブラシホルダ33が挿通される複数の挿通部35aが所定間隔で設けられる。   A soundproof material 35 covering the exhaust port 32b is disposed around the motor unit 32d. FIG. 5 shows a plan view of the soundproof material 35. The soundproof material 35 is made of an elastic body having sound absorption properties such as urethane foam, and is formed extending in one direction. The soundproof material 35 is provided with a plurality of insertion portions 35a through which the brush holder 33 is inserted at predetermined intervals.

本実施形態では挿通部35aはブラシホルダ33の断面形状に対応して周囲が閉じられた矩形の貫通孔から成っている。挿通部35aを多角形、円形、スリット状の貫通孔により形成してもよい。また、挿通部35aは周囲が閉じられた貫通孔に限られず、防音材35の端面に開放端を有する切欠きにより挿通部35aを形成してもよい。   In the present embodiment, the insertion portion 35 a is formed of a rectangular through hole whose periphery is closed corresponding to the cross-sectional shape of the brush holder 33. The insertion part 35a may be formed by a polygonal, circular, or slit-shaped through hole. Further, the insertion part 35a is not limited to the through hole whose periphery is closed, and the insertion part 35a may be formed by a notch having an open end on the end surface of the soundproof material 35.

長尺の防音材35はブラシホルダ33を挿通部35aに挿通してモータ部32dの周面に渦巻状に巻回される。これにより、一の防音材35が積層され、柔軟性を有して容易に変形する薄い防音材35を用いても実質的な厚みを厚く確保することができる。従って、電動送風機の防音構造の工数及び部品点数を増加させることなく防音効果を向上することができる。   The long soundproof material 35 is spirally wound around the peripheral surface of the motor portion 32d by inserting the brush holder 33 through the insertion portion 35a. Thereby, even if the one soundproof material 35 is laminated | stacked and the thin soundproof material 35 which has a softness | flexibility and deform | transforms easily is used, it can ensure substantial thickness. Therefore, the soundproofing effect can be improved without increasing the number of steps and the number of parts of the soundproofing structure of the electric blower.

この時、挿通部35aにブラシホルダ33を挿通するので防音材35の回転を防止し、作業性を向上させることができる。これにより、電動送風機の防音構造の工数をより低くすることができる。また、挿通部35aが設けられない場合はブラシホルダ33の先端に防音材35が当接して防音材35とファンケース31との間に隙間が発生し、防音効果が低下する。このため、挿通部35aにブラシホルダ33を挿通することにより防音材35がファンケース31に密着し、隙間の発生を防止して防音効果をより向上することができる。   At this time, since the brush holder 33 is inserted into the insertion portion 35a, the soundproof material 35 can be prevented from rotating and workability can be improved. Thereby, the man-hour of the soundproof structure of an electric blower can be made lower. Further, when the insertion portion 35a is not provided, the soundproof material 35 comes into contact with the tip of the brush holder 33, and a gap is generated between the soundproof material 35 and the fan case 31, so that the soundproof effect is lowered. For this reason, by inserting the brush holder 33 into the insertion portion 35a, the soundproofing material 35 is brought into close contact with the fan case 31, and the generation of a gap can be prevented to further improve the soundproofing effect.

防音材35はファンケース32の一周よりも長い範囲に巻回されていれば防音効果を得ることができるが、二周以上に巻回するとより望ましい。これにより、ファンケース32の全周にわたって防音材35が複数層に積層され、全周で防音材35の実質的な厚みを厚くすることができる。   If the soundproof material 35 is wound in a range longer than one turn of the fan case 32, a soundproofing effect can be obtained, but it is more desirable to wind the soundproof material 35 more than twice. Thereby, the soundproof material 35 is laminated | stacked on multiple layers over the perimeter of the fan case 32, and the substantial thickness of the soundproof material 35 can be thickened in a perimeter.

また、本実施形態では排気口32bに面した防音材35が3層に積層され、排気口32bに対向する位置で防音材35が2層に積層される。即ち、排気口35bに面した防音材35の積層数に対して排気口32bから離れた位置の防音材35の積層数が少ない。積層数が少ない位置は径方向の流路抵抗が小さいため、排気口32bの排気は防音材35の内部を周方向に流通して積層数の少ない位置から外部に放出される。これにより、気流が防音材35を通過する経路を長くすることができ、防音効果をより向上することができる。   In this embodiment, the soundproof material 35 facing the exhaust port 32b is laminated in three layers, and the soundproof material 35 is laminated in two layers at a position facing the exhaust port 32b. In other words, the number of soundproof materials 35 at a position away from the exhaust port 32b is smaller than the number of soundproof materials 35 facing the exhaust port 35b. Since the flow resistance in the radial direction is small at the position where the number of laminations is small, the exhaust from the exhaust port 32b flows in the circumferential direction inside the soundproof material 35 and is discharged to the outside from the position where the number of laminations is small. Thereby, the path | route through which an airflow passes the soundproof material 35 can be lengthened, and the soundproofing effect can be improved more.

上記構成の電気掃除機1において、電動送風機30の駆動によって集塵部20に負圧が発生し、吸込口体5から床面の塵埃が吸い込まれて延長パイプ4及び接続ホース3を流通する。塵埃を含む気流は接続口10a及び流入口22aを介して集塵部20の集塵容器22に流入し、集塵容器22内に旋回気流を形成する。旋回気流の遠心力によって気流に含まれる比較的大きな塵埃が除去され、集塵容器22内に堆積する。   In the vacuum cleaner 1 configured as described above, a negative pressure is generated in the dust collecting unit 20 by driving the electric blower 30, and dust on the floor surface is sucked from the suction port body 5 and flows through the extension pipe 4 and the connection hose 3. The air flow including dust flows into the dust collecting container 22 of the dust collecting unit 20 through the connection port 10a and the inflow port 22a, and forms a swirling air flow in the dust collecting container 22. The relatively large dust contained in the airflow is removed by the centrifugal force of the swirling airflow, and is accumulated in the dust collecting container 22.

大きな塵埃が除去された気流は上昇し、フィルタ37により細かい塵埃が捕集される。フィルタ37を通過した気流は排気流路42を流通し、集塵部排気口42aを介して集塵部20から流出する。集塵部20から流出した気流はダクト15を流通し、電動送風機30を介して排気口32bから排気される。排気口32bの排気は防音材35を通過し、本体排気口10bから外部に放出される。これにより、電動送風機30の騒音を低減することができる。   The airflow from which the large dust has been removed rises, and fine dust is collected by the filter 37. The airflow that has passed through the filter 37 flows through the exhaust passage 42 and flows out of the dust collector 20 through the dust collector exhaust port 42a. The airflow flowing out from the dust collection unit 20 flows through the duct 15 and is exhausted from the exhaust port 32b through the electric blower 30. The exhaust from the exhaust port 32b passes through the soundproof material 35 and is discharged to the outside from the main body exhaust port 10b. Thereby, the noise of the electric blower 30 can be reduced.

本実施形態によると、防音材35に形成した挿通部35aをファンケース32の突出部を形成するブラシホルダ33に挿通してファンケース32の周面に防音材を渦巻状に巻回したので、柔軟性を有する薄い一の防音材35を容易に変形して一周よりも長い範囲に巻き付けることができる。この時、挿通部35aにブラシホルダ33を挿通するため、防音材35の回転を防止して作業性が向上するとともに、防音材35とファンケース32との隙間の発生を防止することができる。従って、電動送風機30の防音構造の工数及び部品点数を増加させることなく防音効果を向上することができる。   According to the present embodiment, the insertion portion 35a formed in the soundproof material 35 is inserted into the brush holder 33 that forms the protruding portion of the fan case 32, and the soundproof material is wound around the peripheral surface of the fan case 32 in a spiral shape. One thin soundproof material 35 having flexibility can be easily deformed and wound around a range longer than one round. At this time, since the brush holder 33 is inserted into the insertion portion 35a, it is possible to prevent the soundproof material 35 from rotating and to improve workability, and to prevent a gap between the soundproof material 35 and the fan case 32 from being generated. Therefore, the soundproofing effect can be improved without increasing the number of steps and the number of parts of the soundproofing structure of the electric blower 30.

尚、ファンケース32の周面にネジ等を設けて突出部を形成し、該突出部を挿通部35aに挿通して防音材35を巻回してもよい。しかし、ブラシホルダ33により挿通部35aに挿通される突出部を構成すると別途突出部を設ける必要がないため部品点数を削減することができる。   In addition, a screw etc. may be provided in the surrounding surface of the fan case 32, a protrusion part may be formed, the soundproof material 35 may be wound by inserting this protrusion part into the insertion part 35a. However, if the protrusion part inserted in the insertion part 35a by the brush holder 33 is comprised, since it is not necessary to provide a protrusion part separately, the number of parts can be reduced.

また、開放端を有する切欠きにより挿通部35aを形成すると、防音材35の巻回時に周方向の力が働き、ブラシホルダ33から挿通部35aが脱落しやすくなる。このため、挿通部35aが周囲を閉じた貫通孔により形成すると、ブラシホルダ33からの挿通部35aの脱落を低減することができる。従って、防音構造の組立時の作業性をより向上することができる。   Further, when the insertion portion 35 a is formed by a notch having an open end, a circumferential force acts when the soundproof material 35 is wound, and the insertion portion 35 a is easily dropped from the brush holder 33. For this reason, if the insertion part 35a is formed by a through-hole having a closed periphery, the dropout of the insertion part 35a from the brush holder 33 can be reduced. Therefore, the workability at the time of assembling the soundproof structure can be further improved.

また、防音材35が巻回によってファンケース32の全周にわたり複数層に積層されるので、ファンケース32の全周で防音材35の実質的な厚みを厚くすることができる。従って、柔軟性を有して容易に変形する薄い防音材35によって高い防音効果を得ることができる。   Further, since the soundproof material 35 is laminated in a plurality of layers over the entire circumference of the fan case 32 by winding, the substantial thickness of the soundproof material 35 can be increased over the entire circumference of the fan case 32. Therefore, a high soundproofing effect can be obtained by the thin soundproofing material 35 having flexibility and easily deforming.

また、排気口32bに面した防音材35の積層数に対して排気口32bから離れた位置の防音材35の積層数が少ないので、気流が防音材35を通過する経路を長くすることができ、防音効果をより向上することができる。   In addition, since the number of soundproofing materials 35 positioned far from the exhaust port 32b is smaller than the number of soundproofing materials 35 facing the exhaust port 32b, the path through which the airflow passes through the soundproofing material 35 can be lengthened. The soundproofing effect can be further improved.

本実施形態において、電気掃除機1が電動送風機30を内装する本体部2に吸込口体5が接続ホース3を介して接続されるキャニスター型に形成されるが、本体部2に吸込口体5を一体に設けた縦型の電気掃除機であってもよい。   In the present embodiment, the vacuum cleaner 1 is formed in a canister type in which the suction port body 5 is connected to the main body portion 2 that houses the electric blower 30 via the connection hose 3. May be a vertical vacuum cleaner provided integrally.

本発明によると、電動送風機を備えた電気掃除機に利用することができる。   According to this invention, it can utilize for the vacuum cleaner provided with the electric blower.

1 電気掃除機
2 本体部
3 接続ホース
4 延長パイプ
5 吸込口体
10 本体カバー
16、17 ハウジング
18 緩衝体
20 集塵部
22 集塵容器
22a 流入口
30 電動送風機
31 モータ
31a 回転軸
31b ロータ
31c ステータ
31d 整流子
31e ブラシ
32 ファンケース
32a 吸気口
32b 排気口
33 ブラシホルダ
35 防音材
35a 挿通部
42 排気流路
42a 集塵部排気口
DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Main part 3 Connection hose 4 Extension pipe 5 Suction inlet 10 Main body cover 16, 17 Housing 18 Buffer 20 Dust collector 22 Dust collection container 22a Inlet 30 Electric blower 31 Motor 31a Rotating shaft 31b Rotor 31c Stator 31d Commutator 31e Brush 32 Fan case 32a Intake port 32b Exhaust port 33 Brush holder 35 Soundproof material 35a Insertion part 42 Exhaust flow path 42a Dust collection part exhaust port

Claims (6)

周面に排気口を開口した筒状のファンケース内にモータを配した電動送風機の周囲に前記排気口を覆う防音材を配した電動送風機の防音構造において、前記ファンケースの周面に突出する突出部を設け、前記防音材に形成した挿通部を前記突出部に挿通して前記ファンケースの周面に前記防音材を渦巻状に巻回したことを特徴とする電動送風機の防音構造。   In a soundproof structure of an electric blower in which a soundproof material covering the exhaust port is arranged around an electric blower in which a motor is arranged in a cylindrical fan case having an exhaust port opened on a peripheral surface thereof, the protrusion protrudes from the peripheral surface of the fan case A soundproof structure for an electric blower, characterized in that a projecting portion is provided, an insertion portion formed in the soundproof material is inserted into the projecting portion, and the soundproof material is spirally wound around a peripheral surface of the fan case. 前記電動送風機がブラシを有する整流子モータを備え、前記突出部が前記ブラシを収納するブラシホルダから成ることを特徴とする請求項1に記載の電動送風機の防音構造。   The soundproof structure for an electric blower according to claim 1, wherein the electric blower includes a commutator motor having a brush, and the protrusion includes a brush holder that houses the brush. 前記挿通部が周囲を閉じた貫通孔から成ることを特徴とする請求項1または請求項2に記載の電動送風機の防音構造。   The soundproof structure for an electric blower according to claim 1 or 2, wherein the insertion portion is formed of a through hole having a closed periphery. 前記防音材が巻回によって前記ファンケースの全周にわたり複数層に積層されることを特徴とする請求項1〜請求項3のいずれかに記載の電動送風機の防音構造。   The soundproof structure for an electric blower according to any one of claims 1 to 3, wherein the soundproof material is laminated in a plurality of layers over the entire circumference of the fan case by winding. 前記排気口に面した前記防音材の積層数に対して前記排気口から離れた位置の前記防音材の積層数が少ないことを特徴とする請求項4に記載の電動送風機の防音構造。   5. The soundproof structure for an electric blower according to claim 4, wherein the number of the soundproof materials stacked at a position away from the exhaust port is smaller than the number of the soundproof materials stacked facing the exhaust port. 請求項1〜請求項5のいずれかに記載の電動送風機の防音構造を備えたことを特徴とする電気掃除機。   An electric vacuum cleaner comprising the soundproof structure for an electric blower according to any one of claims 1 to 5.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993998A (en) * 1982-11-19 1984-05-30 Matsushita Electric Ind Co Ltd Motor driven blower
JPH05321839A (en) * 1992-05-22 1993-12-07 Daikin Ind Ltd Soundproof structure of compressor for refrigerating machine
JP2002339742A (en) * 2001-05-14 2002-11-27 Shinba Iron Works Inc Method of manufacturing exhaust muffler and exhaust muffler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993998A (en) * 1982-11-19 1984-05-30 Matsushita Electric Ind Co Ltd Motor driven blower
JPH05321839A (en) * 1992-05-22 1993-12-07 Daikin Ind Ltd Soundproof structure of compressor for refrigerating machine
JP2002339742A (en) * 2001-05-14 2002-11-27 Shinba Iron Works Inc Method of manufacturing exhaust muffler and exhaust muffler

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