JP2005238417A - Hand grinder - Google Patents

Hand grinder Download PDF

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Publication number
JP2005238417A
JP2005238417A JP2004054441A JP2004054441A JP2005238417A JP 2005238417 A JP2005238417 A JP 2005238417A JP 2004054441 A JP2004054441 A JP 2004054441A JP 2004054441 A JP2004054441 A JP 2004054441A JP 2005238417 A JP2005238417 A JP 2005238417A
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Japan
Prior art keywords
casing
rotary shaft
dust
transparent shield
suction fan
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Pending
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JP2004054441A
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Japanese (ja)
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Seiichiro Nagata
誠一郎 永田
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Sato Corp
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Sato Corp
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Priority to JP2004054441A priority Critical patent/JP2005238417A/en
Publication of JP2005238417A publication Critical patent/JP2005238417A/en
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  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand grinder sucking and recovering dust such as chips, while a worker performs grinding work of a workpiece. <P>SOLUTION: The inside of a cylindrical casing 2 is composed of: a rotary shaft 3, a rotary grinding wheel 4 arranged on the tip of the rotary shaft; a suction fan 6 arranged on the rear end of the rotary shaft 3; a motor 5 for rotatingly driving the rotary shaft 3; a dust collecting chamber 7 adjacent to the suction fan 6; a funnel-shaped transparent shield 8 having the opening tip side of the rotary grinding wheel 4, installed on the tip of the casing 2 by blocking up the rear end side and preventing scattering of the dust generated from the rotary grinding wheel 4 to the worker side; and a pressure hose 9 for sucking and introducing air in the transparent shield 8 to the dust collecting chamber 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、使用中に工作物と回転砥石から発生する研削切粉などの粉塵を吸引してケーシング内の集塵室に回収することのできるハンドグラインダーに関する。   The present invention relates to a hand grinder capable of sucking dust such as grinding chips generated from a workpiece and a rotating grindstone during use and collecting the dust in a dust collecting chamber in a casing.

従来、小さな金属部品のバリ取りや修正などの作業に、片手で工作物を保持しながらもう片方の手で操作できるハンドグラインダーが用いられている。この装置は、筒状のケーシング内にモータを収容し、ケーシングの先端から突出した回転軸の先端に設けた回転砥石を工作物に押し当てて研削加工するもので、工作物や回転砥石から発生した粉塵が周囲に飛び散る欠点があった。   Conventionally, hand grinders that can be operated with the other hand while holding a workpiece with one hand have been used for deburring and correction of small metal parts. This device accommodates a motor in a cylindrical casing and grinds the workpiece by pressing the rotating grindstone provided at the tip of the rotating shaft protruding from the tip of the casing against the workpiece. There was a defect that the dust that was scattered scattered around.

このため、作業者が保護マスクや保護メガネを着用して粉塵対策する必要があるばかりでなく、作業場所もシートを掛けるなど、防塵処置や後の清掃作業が大変であった。   For this reason, it is not only necessary for an operator to wear a protective mask and protective glasses to take measures against dust, but also dust-proofing and subsequent cleaning work such as putting a sheet on the work place is difficult.

一方、据え置きタイプの研削装置では、回転砥石をカバーで覆い、研削した切粉をバキュームクリーナーに吸い込んで効率よく回収する装置が、特許文献1等により知られている。   On the other hand, in a stationary type grinding apparatus, an apparatus that covers a rotating grindstone with a cover and sucks the ground chips into a vacuum cleaner and efficiently collects them is known from Patent Document 1 and the like.

特開2000−033570JP2000-033570

上述のように、据え置きタイプの研削装置においては、設置スペースさえあれば研削装置にバキュームクリーナーを接続して設けることは容易であったが、ハンドグラインダーにバキュームクリーナーを内蔵させたものはなかった。   As described above, in the stationary type grinding apparatus, it is easy to connect the vacuum cleaner to the grinding apparatus as long as there is an installation space, but there is no hand grinder with the vacuum cleaner built therein.

本発明は上記従来技術の問題に鑑みなされたものであり、作業者が工作物の研削作業をしながら、切粉などの粉塵を吸引して回収できるハンドグラインダーを提供することを目的とする。   The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a hand grinder that allows an operator to suck and collect dust such as chips while grinding a workpiece.

上記課題を解決するため、本発明は、筒状のケーシングと、該ケーシング内に設けられ、先端が外側に突出した回転軸と、該回転軸の先端に設けられた回転砥石と、前記ケーシング内の回転軸後端に設けられた吸引ファンと、前記回転軸を回転駆動するモータと、前記吸引ファンに隣接してケーシング内に設けられた集塵室と、前記回転砥石の先端側が開放し、後端側が閉塞してケーシングの先端に取付けられ、回転砥石から発生する粉塵が作業者側に飛び散るのを防ぐ漏斗状の透明シールドと、該透明シールド内の空気を吸引して前記集塵室に導く耐圧ホースとからなることを特徴とする構成を採用する。   In order to solve the above-described problems, the present invention provides a cylindrical casing, a rotary shaft provided in the casing and having a tip protruding outward, a rotating grindstone provided at the tip of the rotary shaft, A suction fan provided at the rear end of the rotary shaft, a motor for rotationally driving the rotary shaft, a dust collecting chamber provided in the casing adjacent to the suction fan, and a front end side of the rotary grindstone are opened, The rear end side is closed and attached to the front end of the casing, and a funnel-shaped transparent shield that prevents dust generated from the rotating grindstone from scattering to the worker side, and air in the transparent shield is sucked into the dust collecting chamber. The structure characterized by comprising the pressure | voltage resistant hose to guide is employ | adopted.

上記構成により、単一のケーシング内にバキュームクリーナーと同様の構造を形成でき、回転砥石の回転と連動して吸引ファンにより吸塵できるので小型軽量化でき、片手で研削作業と同時に操作できる。   With the above configuration, a structure similar to a vacuum cleaner can be formed in a single casing, and dust can be absorbed by a suction fan in conjunction with the rotation of the rotating grindstone, so that it can be reduced in size and weight and can be operated simultaneously with one hand.

また、透明シールドを設けたので、作業者が透明シールド越しに工作物を目視しながら作業でき、吸引ファンで透明シールド内の空気を吸引することにより、透明シールドが粉塵で曇るのを防止できる。   Further, since the transparent shield is provided, the operator can work while viewing the workpiece through the transparent shield, and the suction of the air in the transparent shield with the suction fan can prevent the transparent shield from being clouded with dust.

以下、添付図面に従って、本発明に係るハンドグラインダーの好ましい実施の形態について詳説する。   Hereinafter, preferred embodiments of a hand grinder according to the present invention will be described in detail with reference to the accompanying drawings.

図1はハンドグラインダー1の使用方法を示す外観斜視図、図2はハンドグラインダー1の軸方向に沿った断面図である。   FIG. 1 is an external perspective view showing how to use the hand grinder 1, and FIG. 2 is a sectional view along the axial direction of the hand grinder 1.

図2において、2は有底筒状のケーシングであり、該ケーシング2には内部先端側に後述するモータ5、吸引ファン6等が配設されると共に、後端側に集塵室7が隔成されている。   In FIG. 2, reference numeral 2 denotes a bottomed cylindrical casing. The casing 2 is provided with a motor 5, a suction fan 6 and the like which will be described later on the inner front end side, and a dust collection chamber 7 on the rear end side. It is made.

3は前記ケーシング2内に設けられ、先端が外側に突出した回転軸であり、該回転軸3の先端には、該回転軸3と一体回転する回転砥石4が設けられている。5は前記回転軸3を回転駆動するモータ、6は前記ケーシング2内の回転軸3後端側に設けられ、該回転軸3により駆動される吸引ファンである。   A rotating shaft 3 is provided in the casing 2 and has a tip protruding outward. A rotating grindstone 4 that rotates integrally with the rotating shaft 3 is provided at the tip of the rotating shaft 3. Reference numeral 5 denotes a motor that rotationally drives the rotary shaft 3, and 6 denotes a suction fan that is provided on the rear end side of the rotary shaft 3 in the casing 2 and is driven by the rotary shaft 3.

7は吸引ファン6に隣接してケーシング2内の後端側に隔成された集塵室であり、該集塵室7内には、粉塵を集積するフィルター機能を兼ねた集塵バッグ7Aが配設されている。7Bは、集塵バッグ7Aを交換する際に開閉する蓋、7Cは吸引ファン6側への通気孔を備えた隔壁、7Dは排気口である。   Reference numeral 7 denotes a dust collection chamber that is adjacent to the suction fan 6 and is separated from the rear end side of the casing 2. In the dust collection chamber 7, a dust collection bag 7 A that also functions as a filter for collecting dust is provided. It is arranged. 7B is a lid that opens and closes when the dust bag 7A is replaced, 7C is a partition wall provided with a vent hole toward the suction fan 6, and 7D is an exhaust port.

8は前記回転砥石4の先端側が開放し、後端側が閉塞してケーシング2の先端に取付けられた透明シールドである。該透明シールド8は、透明度と高強度を備えた、例えばポリカーボネート樹脂などのプラスチック製で、回転砥石4が工作物を切削して発生する粉塵が作業者側に飛び散るのを防ぐのと共に、作業者が該透明シールド越しに目視しながら作業するために設けられている。また、該透明シールド8は、漏斗状をなし、粉塵を吸引するための空気取入口ともなっている。   A transparent shield 8 is attached to the front end of the casing 2 with the front end side of the rotating grindstone 4 open and the rear end side closed. The transparent shield 8 is made of plastic such as polycarbonate resin having transparency and high strength. The transparent shield 8 prevents dust generated by the rotating grindstone 4 from cutting the workpiece from being scattered on the operator side. Is provided for working while viewing through the transparent shield. The transparent shield 8 has a funnel shape and also serves as an air inlet for sucking dust.

そして、前記透明シールド8の後端部には、前記回転軸3の周囲から径方向外向きに吸引部が伸張し、耐圧ホース9の先端へと接続されている。
該耐圧ホース9は吸引による負圧で潰れないように強度を高めた蛇腹状のホースで、後端側は前記ケーシング2内を伸張して前述した集塵室7の集塵バッグ7Aへと接続されている。
A suction portion extends radially outward from the periphery of the rotary shaft 3 at the rear end of the transparent shield 8 and is connected to the tip of the pressure-resistant hose 9.
The pressure hose 9 is a bellows-like hose with increased strength so as not to be crushed by negative pressure due to suction. The rear end of the pressure hose 9 extends inside the casing 2 and is connected to the dust collection bag 7A of the dust collection chamber 7 described above. Has been.

実施の形態は以上に述べた構成からなるもので、回転砥石4が回転して工作物を切削すると、発生した粉塵が主に回転砥石4の径方向外側に飛散する。
ここで、回転軸3には回転砥石4と同時に吸引ファン6が接続されているので、該吸引ファン6は集塵室7側の空気を吸い込み、排気口7Dから排出する。
そして、耐圧ホース9内に負圧が生じるので、透明シールド8から矢示A,B,C,D,E,Fの順に空気の流れを生じ、粉塵は集塵室7の集塵バッグ7A内に捕集される。
The embodiment is configured as described above. When the rotating grindstone 4 rotates and cuts the workpiece, the generated dust is scattered mainly on the radially outer side of the rotating grindstone 4.
Here, since the suction fan 6 is connected to the rotary shaft 3 simultaneously with the rotary grindstone 4, the suction fan 6 sucks air on the dust collection chamber 7 side and discharges it from the exhaust port 7D.
Since a negative pressure is generated in the pressure hose 9, air flows in the order of arrows A, B, C, D, E, and F from the transparent shield 8, and dust is collected in the dust collection bag 7 A of the dust collection chamber 7. To be collected.

以上の作用により、作業者が危険、有害な粉塵を浴びたり吸引するのを防ぐことができ、作業環境が汚染されるのを防止できる。また、透明シールド8内に空気流を生じるので、透明シールド8が粉塵で曇るのを防止でき、視認性が向上する。さらに、透明シールド8の後端側で回転軸3の径方向外向きに空気を吸引するので、回転軸3の軸受け部分に粉塵が付着するのを予防でき、特にハンドグラインダー1を上向きで使用する場合など、回転軸3の摩耗なども予防できる。   By the above operation, it is possible to prevent the worker from taking or sucking dangerous or harmful dust, and to prevent the work environment from being contaminated. Moreover, since an air flow is generated in the transparent shield 8, the transparent shield 8 can be prevented from being clouded with dust, and visibility is improved. Further, since air is sucked radially outward of the rotary shaft 3 at the rear end side of the transparent shield 8, dust can be prevented from adhering to the bearing portion of the rotary shaft 3, and the hand grinder 1 is used particularly upward. In some cases, wear of the rotating shaft 3 can be prevented.

本実施の形態のハンドグラインダーの外観斜視図External perspective view of the hand grinder of the present embodiment 図1に示したハンドグラインダーの軸方向断面図Axial sectional view of the hand grinder shown in FIG.

符号の説明Explanation of symbols

2…ケーシング、3…回転軸、4…回転砥石、5…モータ、6…吸引ファン、7…集塵室、7A…集塵バッグ、7B…蓋、8…透明シールド、9…耐圧ホース

DESCRIPTION OF SYMBOLS 2 ... Casing, 3 ... Rotating shaft, 4 ... Rotary grindstone, 5 ... Motor, 6 ... Suction fan, 7 ... Dust collection chamber, 7A ... Dust collection bag, 7B ... Cover, 8 ... Transparent shield, 9 ... Pressure hose

Claims (1)

筒状のケーシングと、該ケーシング内に設けられ、先端が外側に突出した回転軸と、該回転軸の先端に設けられた回転砥石と、前記ケーシング内の回転軸後端に設けられた吸引ファンと、前記回転軸を回転駆動するモータと、前記吸引ファンに隣接してケーシング内に設けられた集塵室と、前記回転砥石の先端側が開放し、後端側が閉塞してケーシングの先端に取付けられ、回転砥石から発生する粉塵が作業者側に飛び散るのを防ぐ漏斗状の透明シールドと、該透明シールド内の空気を吸引して前記集塵室に導く耐圧ホースとからなるハンドグラインダー。

A cylindrical casing, a rotary shaft provided in the casing and having a tip protruding outward, a rotating grindstone provided at the tip of the rotary shaft, and a suction fan provided at the rear end of the rotary shaft in the casing And a motor for rotating the rotating shaft, a dust collection chamber provided in the casing adjacent to the suction fan, and a front end side of the rotating grindstone is opened and a rear end side is closed and attached to the front end of the casing. A hand grinder comprising a funnel-shaped transparent shield that prevents dust generated from the rotating grindstone from scattering to the worker side, and a pressure-resistant hose that sucks air in the transparent shield and guides it to the dust collecting chamber.

JP2004054441A 2004-02-27 2004-02-27 Hand grinder Pending JP2005238417A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009039858A (en) * 2007-03-14 2009-02-26 Topy Ind Ltd End surface working device
JP2009285786A (en) * 2008-05-29 2009-12-10 Makita Corp Dust box and electric power tool
WO2011030702A1 (en) * 2009-09-14 2011-03-17 株式会社マキタ Dust-collecting cover for disc grinder
US8622788B2 (en) 2009-01-29 2014-01-07 Nakaya Co., Ltd. Dust collecting cover
CN104209842A (en) * 2013-06-01 2014-12-17 昆山飞达磨具制造有限公司 Handheld abrasive tool capable of lowering noise and collecting dust
CN106150516A (en) * 2016-08-30 2016-11-23 中国铁建重工集团有限公司 Quarrying apparatus and control method, development machine
CN107297687A (en) * 2017-08-15 2017-10-27 贵州金韵乐器有限公司 Hand lapping cleaner in a kind of woody musical instrument production
CN108705450A (en) * 2018-07-25 2018-10-26 苏州谊佳润机电制造有限公司 A kind of automatic assembly line accessory processing grinding device for capableing of dust suction
CN108942449A (en) * 2018-06-20 2018-12-07 上海锅炉厂有限公司 A kind of pore surface batch mill and dust exhaust apparatus
CN110524400A (en) * 2019-08-22 2019-12-03 王雪梅 A kind of cylindrical stone surface polishing equipment
CN112720177A (en) * 2021-02-02 2021-04-30 赣州基盛精密机械有限公司 Dustless polisher is used in fine machining
CN112809483A (en) * 2020-12-31 2021-05-18 涡阳县康仕达机电有限公司 Welding spot grinding device for axle machining
WO2021092932A1 (en) * 2019-11-15 2021-05-20 南京普雷特钛业有限公司 Titanium plate production grinding device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009039858A (en) * 2007-03-14 2009-02-26 Topy Ind Ltd End surface working device
JP2009285786A (en) * 2008-05-29 2009-12-10 Makita Corp Dust box and electric power tool
US8622788B2 (en) 2009-01-29 2014-01-07 Nakaya Co., Ltd. Dust collecting cover
WO2011030702A1 (en) * 2009-09-14 2011-03-17 株式会社マキタ Dust-collecting cover for disc grinder
JP2011056641A (en) * 2009-09-14 2011-03-24 Makita Corp Dust collection cover of disc grinder
US9278427B2 (en) 2009-09-14 2016-03-08 Makita Corporation Dust collection cover of disk grinder
CN104209842A (en) * 2013-06-01 2014-12-17 昆山飞达磨具制造有限公司 Handheld abrasive tool capable of lowering noise and collecting dust
CN106150516A (en) * 2016-08-30 2016-11-23 中国铁建重工集团有限公司 Quarrying apparatus and control method, development machine
CN107297687A (en) * 2017-08-15 2017-10-27 贵州金韵乐器有限公司 Hand lapping cleaner in a kind of woody musical instrument production
CN108942449A (en) * 2018-06-20 2018-12-07 上海锅炉厂有限公司 A kind of pore surface batch mill and dust exhaust apparatus
CN108942449B (en) * 2018-06-20 2024-02-09 上海锅炉厂有限公司 Pipe hole surface batch grinding and dust collection device
CN108705450A (en) * 2018-07-25 2018-10-26 苏州谊佳润机电制造有限公司 A kind of automatic assembly line accessory processing grinding device for capableing of dust suction
CN110524400A (en) * 2019-08-22 2019-12-03 王雪梅 A kind of cylindrical stone surface polishing equipment
WO2021092932A1 (en) * 2019-11-15 2021-05-20 南京普雷特钛业有限公司 Titanium plate production grinding device
CN112809483A (en) * 2020-12-31 2021-05-18 涡阳县康仕达机电有限公司 Welding spot grinding device for axle machining
CN112720177A (en) * 2021-02-02 2021-04-30 赣州基盛精密机械有限公司 Dustless polisher is used in fine machining

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