JP6210221B2 - Dust collector - Google Patents

Dust collector Download PDF

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JP6210221B2
JP6210221B2 JP2014038676A JP2014038676A JP6210221B2 JP 6210221 B2 JP6210221 B2 JP 6210221B2 JP 2014038676 A JP2014038676 A JP 2014038676A JP 2014038676 A JP2014038676 A JP 2014038676A JP 6210221 B2 JP6210221 B2 JP 6210221B2
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dust
guide
case
dust case
dust collector
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掛川　大輔
大輔 掛川
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Koki Holdings Co Ltd
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Hitachi Koki Co Ltd
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Description

本発明は、相互に分離可能なダストケース及び本体を備える集じん機に関する。   The present invention relates to a dust collector including a dust case and a main body that are separable from each other.

集じん機は、主に床面を掃除したり、電動工具などから排出される切削粉じんを集じんする用途で使用される。集じん機は多種多様であるが、一般的には、本体に内蔵したモータにより集じんファンを回転させてダストケース側面のホース取付口に吸込み力を発生させ、ホース取付口から粉じん等をダストケース内に吸い込む。ダストケースには、その内壁に沿うように集じん袋が配置される。集じん袋としては、市販品のポリエチレン製のポリ袋等の汎用のゴミ袋がよく使用される。ホース取付口の周囲には、集じん袋配置用のガイド（ポリガイド）が固定される。ガイドは、ホース取付口の側方から見て、ホース取付口から斜め下方向に内側に延びる。集じん袋は、開口端部の一部がガイドとダストケース内壁面との間に下方から差し込まれ、開口端部の他の部分がダストケースの上縁と本体との間に挟まれることで、ダストケースに取り付けられる。ダストケース内に集められた粉じん等は、集じん袋ごとダストケース内から取り出され、集じん袋と共に廃棄される。   The dust collector is mainly used for cleaning floor surfaces or collecting cutting dust discharged from electric tools and the like. There are a wide variety of dust collectors, but in general, a dust built-in fan is rotated by a motor built in the main unit to generate suction force at the hose mounting port on the side of the dust case, and dust and the like are removed from the hose mounting port. Inhale into the case. A dust collection bag is arranged along the inner wall of the dust case. As the dust collection bag, a general-purpose garbage bag such as a commercially available polyethylene plastic bag is often used. Around the hose attachment port, a dust collection bag guide (poly guide) is fixed. The guide extends obliquely downward and inward from the hose attachment port when viewed from the side of the hose attachment port. The dust bag is such that part of the opening end is inserted from below between the guide and the inner wall surface of the dust case, and the other part of the opening end is sandwiched between the upper edge of the dust case and the main body. Attached to the dust case. The dust collected in the dust case is taken out from the dust case together with the dust bag and discarded together with the dust bag.

特開２００１−６１７２７号公報JP 2001-61727 A

従来の集じん機では、集じん袋配置用のガイドの下端部が角ばっているため、ダストケース内から集じん袋を取り出す（上方に引き出す）際に、集じん袋がガイドの下端部に引っ掛り、作業性が悪いという問題があった。   In conventional dust collectors, the lower end of the guide for dust collection bag placement is square, so when removing the dust collection bag from the dust case (drawing upward), the dust collection bag is placed on the lower end of the guide. There was a problem of being caught and poor workability.

本発明はこうした状況を認識してなされたものであり、その目的は、従来と比較してダストケース内から集じん袋を容易に取り出すことの可能な集じん機を提供することにある。   The present invention has been made in view of such a situation, and an object of the present invention is to provide a dust collector capable of easily taking out a dust collection bag from the inside of a dust case as compared with the conventional case.

本発明のある態様は、集じん機である。この集じん機は、
相互に分離可能なダストケース及び本体を備え、
前記ダストケースは、上部が開放された底付の筒状で、側面にホース取付口を有し、
前記本体は、モータと、前記モータの駆動により回転する集じんファンとを有し、前記ダストケースの開放された上部を塞ぐ形状であり、
前記ダストケースの内側の前記ホース取付口の周囲に、集じん袋配置用のガイドが設けられ、
前記ガイドは、前記ホース取付口から下方向に延出し、集じん袋の開口端部の一部が前記ガイドと前記ダストケースの内壁面との間に下方から差し込まれるとともに、下端部のうち前記ダストケースの中心側及び下方側に臨む部分に、前記ダストケースの前記延出方向と交差する中心側、及び下方側に凸となる曲面部を有する。 One embodiment of the present invention is a dust collector. This dust collector
It has a dust case and a main body that can be separated from each other,
The dust case is a bottomed cylinder with an open top, and has a hose attachment port on the side,
The main body has a motor and a dust collecting fan that rotates by driving the motor, and has a shape that closes an open upper portion of the dust case,
Around the hose attachment opening inside the dust case, a dust collection bag guide is provided,
The guide extends downward from the hose attachment port, a part of the opening end of the dust bag is inserted from below between the guide and the inner wall surface of the dust case, the portion facing the center side and the lower side of the dust case, the center-side intersecting the extending direction of the dust case, and a curved portion which is convex downward.

前記曲面部は、前記ガイドの下端部に横方向に配列され上下方向に延びるように形成された複数の凸部の各表面に存在してもよい。   The curved surface portion may be present on each surface of a plurality of convex portions arranged in the lateral direction at the lower end portion of the guide and extending in the vertical direction.

前記曲面部の裏側は、上下方向に延びる複数の凹部を横方向に配列した形状であってもよい。   The back side of the curved surface portion may have a shape in which a plurality of concave portions extending in the vertical direction are arranged in the horizontal direction.

前記ガイドは、側端部のうち前記ダストケースの中心側及び自身の側方外側に臨む部分に、前記ダストケースの中心側及び自身の側方外側に凸となる曲面部を有してもよい。   The guide may have a curved surface portion that protrudes toward the center side of the dust case and the side outside of the dust case at a portion facing the center side of the dust case and the side outer side of the side end portion. .

前記ガイドが樹脂製であってもよい。   The guide may be made of resin.

集じん袋は、前記開口端部のうち前記ガイドと係合する部分以外が前記ダストケースの上面部と前記本体との間に挟まれることで、前記ダストケースに取付可能となっていてもよい。 Dust collection bag, that the other part of the guide and the engagement of the front Symbol open end is sandwiched between the main body and the upper surface of the dust case, be made attachable to the dust case Good.

なお、以上の構成要素の任意の組合せ、本発明の表現を方法やシステムなどの間で変換したものもまた、本発明の態様として有効である。   It should be noted that any combination of the above-described constituent elements, and those obtained by converting the expression of the present invention between methods and systems are also effective as aspects of the present invention.

本発明によれば、従来と比較してダストケース内から集じん袋を容易に取り出すことの可能な集じん機を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the dust collector which can take out a dust bag easily from the inside of a dust case compared with the past can be provided.

本発明の実施の形態１に係る集じん機の断面図。Sectional drawing of the dust collector which concerns on Embodiment 1 of this invention. 図１の集じん機のダストケース７の、ホース取付口９に臨む断面図。Sectional drawing which faces the hose attachment port 9 of the dust case 7 of the dust collector of FIG. 図１及び図２のＡ方向から見たガイド１０の矢視図。The arrow 10 view of the guide 10 seen from the A direction of FIG.1 and FIG.2. 図１のダストケース７から集じん袋１１を引き上げるときのダストケース７の断面図。Sectional drawing of the dust case 7 when pulling up the dust bag 11 from the dust case 7 of FIG. 図４の要部拡大図。The principal part enlarged view of FIG. 実施の形態１に関し、図１の集じん袋１１に替えて紙フィルタ１２をダストケース７に取り付けた集じん機の断面図。1 is a cross-sectional view of a dust collector in which a paper filter 12 is attached to a dust case 7 in place of the dust collection bag 11 of FIG. 図６に示すダストケース７の平断面図。FIG. 7 is a plan sectional view of the dust case 7 shown in FIG. 6. 比較例の集じん機においてダストケース７から集じん袋１１を引き上げるときのダストケース７の断面図。Sectional drawing of the dust case 7 when pulling up the dust collection bag 11 from the dust case 7 in the dust collector of a comparative example. 図８の要部拡大図。The principal part enlarged view of FIG. 比較例に関し、図８の集じん袋１１に替えて紙フィルタ１２をダストケース７に取り付けた集じん機の断面図。FIG. 9 is a cross-sectional view of a dust collector in which a paper filter 12 is attached to a dust case 7 in place of the dust bag 11 of FIG. 本発明の実施の形態２に係る集じん機のホース取付口９及びガイド１０の正面図。The front view of the hose attachment port 9 and the guide 10 of the dust collector which concerns on Embodiment 2 of this invention. 図１１のＢ−Ｂ断面図。BB sectional drawing of FIG. 図１１のホース取付口９及びガイド１０の背面図。The rear view of the hose attachment port 9 and the guide 10 of FIG. 本発明の実施の形態３に係る集じん機のホース取付口９及びガイド１０の正面図。The front view of the hose attachment port 9 and the guide 10 of the dust collector which concerns on Embodiment 3 of this invention. 同背面図。The rear view.

以下、図面を参照しながら本発明の好適な実施の形態を詳述する。なお、各図面に示される同一または同等の構成要素、部材等には同一の符号を付し、適宜重複した説明は省略する。また、実施の形態は発明を限定するものではなく例示であり、実施の形態に記述されるすべての特徴やその組み合わせは必ずしも発明の本質的なものであるとは限らない。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

実施の形態１
図１は、本発明の実施の形態１に係る集じん機の断面図である。図２は、図１の集じん機のダストケース７の、ホース取付口９に臨む断面図である。図３は、図１及び図２のＡ方向から見たガイド１０の矢視図である。 Embodiment 1
FIG. 1 is a cross-sectional view of a dust collector according to Embodiment 1 of the present invention. FIG. 2 is a sectional view of the dust case 7 of the dust collector shown in FIG. FIG. 3 is an arrow view of the guide 10 as viewed from the direction A in FIGS. 1 and 2.

本実施の形態の集じん機は、相互に分離可能なダストケース７及び本体１を備える。本体１の内部には、モータ２が、その出力軸３が鉛直方向下方に延びるように配設される。出力軸３には、遠心方向に気流を発生させる集じんファン４が直結される。集じんファン４の吸気口５は、本体１の下面中心部に設けられる。本体１の下方には、フィルタ装置６及びダストケース７が配設される。フィルタ装置６の上面部６ａは、本体１の下面外周部に設けられたゴム等の弾性材からなるシールパッキン８と、ダストケース７の上面部７ａとの間に挟まれ、本体１とダストケース７が図示されていないクランプなどにより相互に締結されることにより、気密に挟持（圧着）される。   The dust collector of the present embodiment includes a dust case 7 and a main body 1 that are separable from each other. Inside the main body 1, a motor 2 is disposed such that its output shaft 3 extends downward in the vertical direction. The output shaft 3 is directly connected to a dust collection fan 4 that generates an air flow in the centrifugal direction. The air inlet 5 of the dust collection fan 4 is provided at the center of the lower surface of the main body 1. A filter device 6 and a dust case 7 are disposed below the main body 1. The upper surface portion 6a of the filter device 6 is sandwiched between a seal packing 8 made of an elastic material such as rubber and provided on the outer peripheral portion of the lower surface of the main body 1, and the upper surface portion 7a of the dust case 7, and the main body 1 and the dust case 7 are clamped (crimped) in an airtight manner by being fastened together by a clamp or the like not shown.

ダストケース７は、上部が開放された底付の筒状で、不図示のホースを接続するためのホース取付口９を側面に有する。ダストケース７の内側のホース取付口９の周囲には、集じん袋配置用のガイド１０が設けられる。ガイド１０は例えば樹脂製である。ガイド１０は、中央がダストケース７の内壁面に密着した状態でネジ等によって固定される一方、下端部と左右両端部はダストケース７の内壁面から離れた状態とされる。ガイド１０は、ホース取付口９の側方から見て、ホース取付口９から斜め下方向に内側に延びる。ガイド１０は、下端部のうちダストケース７の中心側及び下方側に臨む部分に、ダストケース７の中心側及び下方側に凸となる曲面部１０ａを有する。曲面部１０ａの曲率半径は、例えば1.5ｍｍ〜10.0ｍｍの範囲であり、好ましくは2.5ｍｍ〜3.0ｍｍの範囲とする。曲面部１０ａは、ガイド１０の下端部に横方向に配列され上下方向に延びるように形成された複数の凸部（リブ）１０ｂの各表面に存在する。こうすることで、曲面部１０ａの形成部分においてもガイド１０の肉厚を一定以下かつ均一（例えば2.0mm〜3.0mm）にすることができ、曲面部１０ａを含むガイド１０を一体成形する際に成形不良が起こりにくい。   The dust case 7 has a bottomed cylindrical shape with an open top, and has a hose attachment port 9 for connecting a hose (not shown) on the side surface. Around the hose attachment opening 9 inside the dust case 7, a guide 10 for dust collection bag placement is provided. The guide 10 is made of resin, for example. The guide 10 is fixed with screws or the like in a state where the center is in close contact with the inner wall surface of the dust case 7, while the lower end portion and the left and right end portions are separated from the inner wall surface of the dust case 7. The guide 10 extends obliquely downward and inward from the hose attachment port 9 when viewed from the side of the hose attachment port 9. The guide 10 has a curved surface portion 10 a that protrudes toward the center side and the lower side of the dust case 7 at a portion facing the center side and the lower side of the dust case 7 in the lower end portion. The curvature radius of the curved surface portion 10a is, for example, in the range of 1.5 mm to 10.0 mm, and preferably in the range of 2.5 mm to 3.0 mm. The curved surface portion 10a exists on each surface of a plurality of convex portions (ribs) 10b that are arranged in the lateral direction at the lower end portion of the guide 10 and formed so as to extend in the vertical direction. By doing so, the thickness of the guide 10 can be made constant or less (for example, 2.0 mm to 3.0 mm) even in the formation portion of the curved surface portion 10a, and when the guide 10 including the curved surface portion 10a is integrally formed. Molding defects are unlikely to occur.

本実施の形態の集じん機は、ダストケース７に集じん袋１１を取り付けて使用することができる。集じん袋１１は、例えば、市販品のポリエチレン製のポリ袋等の汎用のゴミ袋である。集じん袋１１は、ダストケース７の内壁に沿うように配置される。集じん袋１１の開口端部の一部は、ガイド１０とダストケース７の内壁面との間に下方から差し込まれる。集じん袋１１の開口端部のうちガイド１０と係合する部分以外は、フィルタ装置６の上面部６ａと共に、本体１の下面外周部に設けられたシールパッキン８と、ダストケース７の上面部７ａとの間に挟まれ、本体１とダストケース７が図示されていないクランプなどにより相互に締結されることにより、気密に挟持（圧着）される。集じん袋１１の開口縁は、ダストケース７の外まで来ていてもよい。   The dust collector of this embodiment can be used with the dust bag 11 attached to the dust case 7. The dust collection bag 11 is a general-purpose garbage bag such as a commercially available polyethylene plastic bag. The dust collection bag 11 is disposed along the inner wall of the dust case 7. Part of the open end of the dust bag 11 is inserted between the guide 10 and the inner wall surface of the dust case 7 from below. The seal packing 8 provided on the outer peripheral portion of the lower surface of the main body 1 together with the upper surface portion 6a of the filter device 6 and the upper surface portion of the dust case 7 except for the portion of the opening end portion of the dust bag 11 that engages with the guide 10 The body 1 and the dust case 7 are fastened to each other by a clamp (not shown) or the like so as to be airtightly clamped (crimped). The opening edge of the dust collection bag 11 may come to the outside of the dust case 7.

本実施の形態の集じん機において、モータ２を駆動し集じんファン４を回転させると、ホース取付口９に吸込み力が発生し、ダストケース７の内部が負圧になる。すると、粉じん１３は空気と共に、不図示のホースを介してホース取付口９からダストケース７の内部に吸い込まれる。その後、フィルタ装置６によって粉じん１３と空気は分離される。すなわち、粉じん１３はフィルタ装置６の外周面で捕集され、空気はフィルタ装置６を通過してフィルタ装置６の内部を通り本体１の内部に吸引される。フィルタ装置６の外周面で捕集された粉じん１３は自然落下し、集じん袋１１の内部に収納される。   In the dust collector of the present embodiment, when the motor 2 is driven and the dust collecting fan 4 is rotated, a suction force is generated in the hose attachment port 9 and the inside of the dust case 7 becomes negative pressure. Then, the dust 13 is sucked into the dust case 7 from the hose attachment port 9 through a hose (not shown) together with air. Thereafter, the dust 13 and the air are separated by the filter device 6. That is, the dust 13 is collected on the outer peripheral surface of the filter device 6, and the air passes through the filter device 6, passes through the filter device 6, and is sucked into the main body 1. The dust 13 collected on the outer peripheral surface of the filter device 6 falls naturally and is stored in the dust collection bag 11.

図４は、図１のダストケース７から集じん袋１１を引き上げるときのダストケース７の断面図である。図５は、図４の要部拡大図である。作業者は、粉じん１３を廃棄する際には、本体１及びフィルタ装置６をダストケース７から取り外し、図４及び図５に示すように集じん袋１１の開口端部をガイド１０から外し、図４に示すように集じん袋１１をダストケース７内から取り出し（上方に引き出し）、粉じん１３を集じん袋１１と共に廃棄する。本実施の形態では、ガイド１０の下端部に曲面部１０ａが設けられているため、集じん袋１１をダストケース７内から引き上げる際、集じん袋１１がガイド１０の下端部に引っ掛かりにくく、作業性が良好で、集じん袋１１が破れるリスクも低い。   4 is a cross-sectional view of the dust case 7 when the dust bag 11 is pulled up from the dust case 7 of FIG. FIG. 5 is an enlarged view of a main part of FIG. When discarding the dust 13, the operator removes the main body 1 and the filter device 6 from the dust case 7, and removes the opening end of the dust collection bag 11 from the guide 10 as shown in FIGS. 4 and 5. 4, the dust collection bag 11 is taken out from the dust case 7 (drawn upward), and the dust 13 is discarded together with the dust collection bag 11. In the present embodiment, since the curved surface portion 10a is provided at the lower end portion of the guide 10, when the dust collection bag 11 is pulled up from the dust case 7, the dust collection bag 11 is not easily caught on the lower end portion of the guide 10, The property is good, and the risk of the dust bag 11 being broken is low.

図６は、実施の形態１に関し、図１の集じん袋１１に替えて紙フィルタ１２をダストケース７に取り付けた集じん機の断面図である。図７は、図６に示すダストケース７の平断面図である。紙フィルタ１２は、ダストケース７の内側においてホース取付口９に取り付けられる。この場合、集じんファン４の回転により発生する吸込み力によりホース取付口９からダストケース７の内部に空気と共に吸い込まれた粉じん１３は、紙フィルタ１２の濾過機能により紙フィルタ１２の内周面で捕集され、空気は紙フィルタ１２を通過してフィルタ装置６を通り、本体１の内部に吸引される。粉じん１３は、ダストケース７内から紙フィルタ１２ごと取り出され、紙フィルタ１２と共に廃棄される。本実施の形態では、ガイド１０の下端部に曲面部１０ａが設けられているため、粉じん１３によって図６に示すように紙フィルタ１２が膨れても、ガイド１０の下端部から紙フィルタ１２に加わる面圧が低減され、紙フィルタ１２が破れる可能性を低減できる。   6 is a cross-sectional view of the dust collector in which a paper filter 12 is attached to the dust case 7 in place of the dust bag 11 of FIG. FIG. 7 is a plan sectional view of the dust case 7 shown in FIG. The paper filter 12 is attached to the hose attachment port 9 inside the dust case 7. In this case, the dust 13 sucked together with air from the hose attachment port 9 into the dust case 7 by the suction force generated by the rotation of the dust collecting fan 4 is formed on the inner peripheral surface of the paper filter 12 by the filtration function of the paper filter 12. The collected air passes through the paper filter 12, passes through the filter device 6, and is sucked into the main body 1. The dust 13 is taken out together with the paper filter 12 from the dust case 7 and discarded together with the paper filter 12. In the present embodiment, since the curved surface portion 10 a is provided at the lower end portion of the guide 10, even if the paper filter 12 swells as shown in FIG. 6 due to the dust 13, it is applied to the paper filter 12 from the lower end portion of the guide 10. The surface pressure is reduced, and the possibility that the paper filter 12 is broken can be reduced.

図８は、比較例の集じん機においてダストケース７から集じん袋１１を引き上げるときのダストケース７の断面図である。図９は、図８の要部拡大図である。図８に示す比較例の集じん機は、集じん袋配置用のガイド８１０の下端部が従来と同様に角ばっている点で実施の形態１のものと相違し、その他の点で一致する。比較例の集じん機では、ガイド８１０の下端部が角ばっているため、集じん袋１１をダストケース７内から引き上げる際、図９に示すように集じん袋１１がガイド８１０の下端部に引っ掛かりやすく、作業性が悪い。また、ガイド８１０の下端部に引っ掛かった集じん袋１１を無理に引き上げようとして集じん袋１１が破れるリスクも高い。これに対し本実施の形態では、ガイド１０の下端部に曲面部１０ａを設けることで、集じん袋１１がガイド１０に引っ掛かりにくい構成とし、比較例における前述の問題を好適に解決することができる。   FIG. 8 is a cross-sectional view of the dust case 7 when the dust bag 11 is pulled up from the dust case 7 in the dust collector of the comparative example. FIG. 9 is an enlarged view of a main part of FIG. The dust collector of the comparative example shown in FIG. 8 is different from that of the first embodiment in that the lower end portion of the dust bag arranging guide 810 is square like the conventional one, and the other points are the same. . In the dust collector of the comparative example, since the lower end portion of the guide 810 is square, when the dust collection bag 11 is pulled up from the dust case 7, the dust collection bag 11 is placed on the lower end portion of the guide 810 as shown in FIG. Easy to catch and poor workability. Further, there is a high risk that the dust collection bag 11 will be broken when trying to forcefully lift the dust collection bag 11 caught on the lower end of the guide 810. On the other hand, in the present embodiment, by providing the curved surface portion 10a at the lower end portion of the guide 10, the dust collection bag 11 is configured not to be caught by the guide 10 and the above-described problems in the comparative example can be solved preferably. .

図１０は、比較例に関し、図８の集じん袋１１に替えて紙フィルタ１２をダストケース７に取り付けた集じん機の断面図である。比較例の集じん機では、ガイド８１０の下端部が角ばっているため、粉じん１３によって図１３に示すように紙フィルタ１２が膨れてくると、ガイド８１０の角ばった下端部から紙フィルタ１２に大きな面圧が加わり、紙フィルタ１２が破れる可能性が高い。これに対し本実施の形態では、ガイド１０の下端部に曲面部１０ａを設けることで、ガイド１０の下端部から紙フィルタ１２に加わる面圧を低減し、比較例における前述の問題を好適に解決することができる。   FIG. 10 is a cross-sectional view of a dust collector in which a paper filter 12 is attached to the dust case 7 in place of the dust bag 11 of FIG. In the dust collector of the comparative example, since the lower end portion of the guide 810 is square, when the paper filter 12 swells as shown in FIG. A large surface pressure is applied, and the paper filter 12 is likely to be broken. In contrast, in the present embodiment, by providing the curved surface portion 10a at the lower end portion of the guide 10, the surface pressure applied to the paper filter 12 from the lower end portion of the guide 10 is reduced, and the above-described problems in the comparative example are preferably solved. can do.

なお、本実施の形態における前述の効果は、ガイド１０の下端部に曲面部１０ａを設けるだけで得られるため、安価かつ容易に実現可能である。   In addition, since the above-mentioned effect in this Embodiment is acquired only by providing the curved surface part 10a in the lower end part of the guide 10, it can implement | achieve cheaply and easily.

実施の形態２
図１１は、本発明の実施の形態２に係る集じん機のホース取付口９及びガイド１０の正面図である。図１２は、図１１のＢ−Ｂ断面図である。図１３は、図１１のホース取付口９及びガイド１０の背面図である。実施の形態１では曲面部１０ａは幅狭であってガイド１０の下端部において横方向に多数個に分かれていたが、本実施の形態では幅の広い曲面部１０ａをガイド１０の下端部に１つ設けている。曲面部１０ａの裏側は、上下方向に延びる複数の凹部１０ｄを横方向に配列した形状であり、凹部１０ｄの底面は曲面部１０ａとの距離が略一定となる。このような構成の場合も、実施の形態１と同様に、曲面部１０ａの形成部分においてもガイド１０の肉厚を一定以下かつ均一（例えば2.0mm〜3.0mm）にすることができ、曲面部１０ａを含むガイド１０を一体成形する際に成形不良が起こりにくい。本実施の形態のその他の点は実施の形態１と同様であり、同様の効果を奏することができる。 Embodiment 2
FIG. 11 is a front view of the hose attachment port 9 and the guide 10 of the dust collector according to the second embodiment of the present invention. 12 is a cross-sectional view taken along the line BB in FIG. 13 is a rear view of the hose attachment port 9 and the guide 10 of FIG. In the first embodiment, the curved surface portion 10a is narrow and is divided into a large number in the lateral direction at the lower end portion of the guide 10, but in this embodiment, the wide curved surface portion 10a is 1 at the lower end portion of the guide 10. Provided. The back side of the curved surface portion 10a has a shape in which a plurality of concave portions 10d extending in the vertical direction are arranged in the horizontal direction, and the distance between the bottom surface of the concave portion 10d and the curved surface portion 10a is substantially constant. In the case of such a configuration, as in the first embodiment, the thickness of the guide 10 can be made constant or less (for example, 2.0 mm to 3.0 mm) even in the formation portion of the curved surface portion 10a. When the guide 10 including 10a is integrally formed, molding defects are unlikely to occur. Other points of the present embodiment are the same as those of the first embodiment, and the same effects can be achieved.

実施の形態３
図１４は、本発明の実施の形態３に係る集じん機のホース取付口９及びガイド１０の正面図である。図１５は、同背面図である。実施の形態２では曲面部１０ａ並びにその裏側の凹部１０ｄがガイド１０の下端部に限定して設けられていたが、本実施の形態では曲面部１０ａ、凹部１０ｄをガイド１０の側端部にも設けている。曲面部１０ａは、側端部においては、ダストケースの７の中心側及び自身の側方外側に臨む部分に、ダストケース７の中心側及び自身の側方外側に凸となるように設けられる。凹部１０ｄは、側端部においては、側縁と略垂直に延び、側縁の方向に沿って配列される。本実施の形態によれば、集じん袋１１がガイド１０の側端部にも引っ掛かりにくくなり、またガイド１０の側端部から紙フィルタ１２に加わる面圧も低減できる。本実施の形態のその他の点は実施の形態２と同様であり、同様の効果を奏することができる。なお、実施の形態１においても、曲面部１０ａを設ける範囲をガイド１０の側端部まで広げてもよい。 Embodiment 3
FIG. 14 is a front view of the hose attachment port 9 and the guide 10 of the dust collector according to Embodiment 3 of the present invention. FIG. 15 is a rear view of the same. In the second embodiment, the curved surface portion 10a and the concave portion 10d on the back side thereof are limited to the lower end portion of the guide 10. However, in the present embodiment, the curved surface portion 10a and the concave portion 10d are also provided on the side end portion of the guide 10. Provided. The curved surface portion 10a is provided at the side end portion so as to protrude toward the center side of the dust case 7 and the lateral outer side of the dust case 7 at the center side of the dust case 7 and the lateral outer side thereof. The concave portions 10d extend substantially perpendicular to the side edges at the side end portions, and are arranged along the direction of the side edges. According to the present embodiment, the dust collection bag 11 is less likely to be caught on the side end of the guide 10, and the surface pressure applied to the paper filter 12 from the side end of the guide 10 can be reduced. Other points of the present embodiment are the same as those of the second embodiment, and the same effects can be achieved. In the first embodiment, the range where the curved surface portion 10a is provided may be extended to the side end portion of the guide 10.

以上、実施の形態を例に本発明を説明したが、実施の形態の各構成要素の材質、形状、数量、配置等には請求項に記載の範囲で種々の変形例が存在し、そうした変形例も本発明の範囲に含まれることが当業者に理解される。   As described above, the present invention has been described by taking the embodiment as an example. However, there are various modifications in the material, shape, quantity, arrangement, and the like of each component of the embodiment within the scope of the claims, and such modifications Those skilled in the art will appreciate that examples are also within the scope of the present invention.

１ 本体、２ モータ、３ 出力軸、４ 集じんファン、５ 吸気口、６ フィルタ装置、６ａ 上面部、７ ダストケース、７ａ 上面部、８ シールパッキン、９ ホース取付口、１０ ガイド（ポリガイド）、１０ａ 曲面部（凸面部）、１０ｂ 凸部（リブ）、１０ｄ 凹部、１１ 集じん袋、 DESCRIPTION OF SYMBOLS 1 Main body, 2 Motor, 3 Output shaft, 4 Dust collection fan, 5 Air inlet, 6 Filter device, 6a Upper surface part, 7 Dust case, 7a Upper surface part, 8 Seal packing, 9 Hose attachment port, 10 Guide (Poly guide) 10a Curved surface part (convex surface part), 10b Convex part (rib), 10d Concave part, 11 Dust collection bag,

Claims (6)

相互に分離可能なダストケース及び本体を備え、
前記ダストケースは、上部が開放された底付の筒状で、側面にホース取付口を有し、
前記本体は、モータと、前記モータの駆動により回転する集じんファンとを有し、前記ダストケースの開放された上部を塞ぐ形状であり、
前記ダストケースの内側の前記ホース取付口の周囲に、集じん袋配置用のガイドが設けられ、
前記ガイドは、前記ホース取付口から下方向に延出し、集じん袋の開口端部の一部が前記ガイドと前記ダストケースの内壁面との間に下方から差し込まれるとともに、下端部のうち前記ダストケースの中心側及び下方側に臨む部分に、前記ダストケースの前記延出方向と交差する中心側、及び下方側に凸となる曲面部を有する、集じん機。 It has a dust case and a main body that can be separated from each other,
The dust case is a bottomed cylinder with an open top, and has a hose attachment port on the side,
The main body has a motor and a dust collecting fan that rotates by driving the motor, and has a shape that closes an open upper portion of the dust case,
Around the hose attachment opening inside the dust case, a dust collection bag guide is provided,
The guide extends downward from the hose attachment port, a part of the opening end of the dust bag is inserted from below between the guide and the inner wall surface of the dust case, the portion facing the center side and the lower side of the dust case, the center-side intersecting the extending direction of the dust case, and a curved portion that protrudes downward, dust collector. 前記曲面部は、前記ガイドの下端部に横方向に配列され上下方向に延びるように形成された複数の凸部の各表面に存在する、請求項１に記載の集じん機。   2. The dust collector according to claim 1, wherein the curved surface portion is present on each surface of a plurality of convex portions arranged in a lateral direction and extending in a vertical direction at a lower end portion of the guide. 前記曲面部の裏側は、上下方向に延びる複数の凹部を横方向に配列した形状である、請求項１に記載の集じん機。   The dust collector according to claim 1, wherein the back side of the curved surface portion has a shape in which a plurality of concave portions extending in the vertical direction are arranged in the horizontal direction. 前記ガイドは、側端部のうち前記ダストケースの中心側及び自身の側方外側に臨む部分に、前記ダストケースの中心側及び自身の側方外側に凸となる曲面部を有する、請求項１から３のいずれか一項に記載の集じん機。   The guide has a curved surface portion that protrudes toward a center side of the dust case and a lateral outer side of the dust case at a portion facing a center side of the dust case and a lateral outer side of the dust case. 4. A dust collector according to any one of items 1 to 3. 前記ガイドが樹脂製である請求項１から４のいずれか一項に記載の集じん機。   The dust collector according to any one of claims 1 to 4, wherein the guide is made of resin. 集じん袋は、前記開口端部のうち前記ガイドと係合する部分以外が前記ダストケースの上面部と前記本体との間に挟まれることで、前記ダストケースに取付可能となっている、請求項１から５のいずれか一項に記載の集じん機。 Dust collection bag, other than the portion of the guide and the engagement of the front Symbol open end wherein the top surface of the dust case by being sandwiched between the main body, and can attach to the dust case, The dust collector according to any one of claims 1 to 5.
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