JP2012213820A - Power tool - Google Patents

Power tool Download PDF

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Publication number
JP2012213820A
JP2012213820A JP2011079521A JP2011079521A JP2012213820A JP 2012213820 A JP2012213820 A JP 2012213820A JP 2011079521 A JP2011079521 A JP 2011079521A JP 2011079521 A JP2011079521 A JP 2011079521A JP 2012213820 A JP2012213820 A JP 2012213820A
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JP
Japan
Prior art keywords
tool
dust
cover
spindle
dust collection
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2011079521A
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Japanese (ja)
Inventor
Eiji Muto
英治 武藤
Makoto Nakamura
真 仲村
Kenichi Tabuse
賢一 田伏
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Makita Corp
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Makita Corp
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Publication date
Application filed by Makita Corp filed Critical Makita Corp
Priority to JP2011079521A priority Critical patent/JP2012213820A/en
Priority to CN2012100333392A priority patent/CN102729143A/en
Priority to US13/405,992 priority patent/US20120252328A1/en
Priority to EP12157709A priority patent/EP2505308A1/en
Priority to RU2012112407/02A priority patent/RU2012112407A/en
Publication of JP2012213820A publication Critical patent/JP2012213820A/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools

Abstract

PROBLEM TO BE SOLVED: To provide a power tool that enhances dust-collecting efficiency in a dust-collecting cover and also has a rotation stopping tool that can stop the rotation of a spindle.SOLUTION: In the power tool 1, a disc-shaped tool is attached to the spindle 16 that protrudes from a housing 10 in which a motor M is housed, the dust-collecting cover 20 for covering the disc-shaped tool is provided in the housing, and a tool insertion opening 24B through which the rotation stopping tool 25 for stopping the rotation of the spindle can be inserted into the dust-collecting cover is formed in the dust-collecting cover. The dust-collecting cover includes a rubber ring 26 that blocks the tool insertion opening so that the tool insertion opening can be opened and closed freely.

Description

この発明は、スピンドルに取り付けた円盤状工具を覆い、被加工物を加工するときに発生する粉塵を集塵する集塵カバーを備えた電動工具に関する。   The present invention relates to a power tool including a dust collection cover that covers a disk-shaped tool attached to a spindle and collects dust generated when a workpiece is processed.

特許文献１には、ハウジングに収容したモータによって回転するスピンドルを備えて、このスピンドルに円盤状の研削工具を取り付けると共に、研削工具の周囲を覆う集塵カバーを備えたグラインダが開示されている。一般にこのグラインダでは、回転する研削工具を被加工物に当てながら被加工物上を移動させることで被加工物を研削し、研削時に発生した粉塵は、集塵カバー内に集塵された後に集塵カバー内と連通する集塵筒から吸引ホースを介して集塵機に収集される。   Patent Document 1 discloses a grinder including a spindle that is rotated by a motor housed in a housing, a disc-shaped grinding tool attached to the spindle, and a dust collecting cover that covers the periphery of the grinding tool. In general, this grinder grinds the work piece by moving it on the work piece while applying a rotating grinding tool to the work piece, and dust generated during grinding is collected after being collected in the dust collection cover. The dust is collected from the dust collection cylinder communicating with the inside of the dust cover via the suction hose.

特開２０１１−５６６４１号公報JP 2011-56441 A

ところで上記のグラインダに代表される電動工具では、スピンドルを任意に回転止めするロック機構が故障したときに、スパナ等の回転止め工具でスピンドルを回転止めできるようにするために、集塵カバーには、集塵カバー内に回転止め工具を挿入可能な工具挿入口が形成されている。しかしながら集塵カバーに工具挿入口を形成すると、集塵カバーの内部と外部とが工具挿入口を通じて連通することになる。その結果として、集塵カバーの気密性が低下し、集塵カバー内に粉塵を集塵する効率が低下することが懸念されていた。   By the way, in the electric tool represented by the above grinder, when the lock mechanism for arbitrarily stopping the rotation of the spindle breaks down, the dust collecting cover is provided with the anti-rotation tool such as a spanner to prevent the spindle from rotating. In addition, a tool insertion opening into which the rotation stop tool can be inserted is formed in the dust collection cover. However, if the tool insertion opening is formed in the dust collection cover, the inside and the outside of the dust collection cover communicate with each other through the tool insertion opening. As a result, there has been a concern that the airtightness of the dust collection cover is reduced, and the efficiency of collecting dust in the dust collection cover is reduced.

一方気密性を確保するために工具挿入口を常時閉塞すると、回転止め工具を集塵カバー内に挿入できなくなるため、スピンドルのロック機構の故障時に回転止め工具を用いてスピンドルの回転止めを行うことができなくなるという不都合がある。   On the other hand, if the tool insertion slot is closed at all times to ensure airtightness, the rotation stop tool cannot be inserted into the dust cover, so the rotation stop tool should be used to stop the rotation of the spindle when the spindle lock mechanism fails. There is an inconvenience that cannot be done.

この発明は、このような状況に鑑み提案されたものであって、集塵カバー内における粉塵の集塵効率を高めると共に、回転止め工具を用いてスピンドルの回転止めが可能な電動工具を提供することを目的とする。   The present invention has been proposed in view of such a situation, and provides an electric tool capable of increasing dust collection efficiency in a dust collection cover and capable of stopping rotation of a spindle using a rotation stopping tool. For the purpose.

請求項１の発明に係る電動工具は、モータを収容したハウジングから突出させたスピンドルに円盤状工具を取り付け、前記ハウジングに、前記円盤状工具を覆う集塵カバーを備え、該集塵カバーに、前記スピンドルを回転止めする回転止め工具を前記集塵カバー内に挿入可能な工具挿入口を形成した電動工具であって、前記集塵カバーに、前記工具挿入口を開閉自在に塞ぐ開閉部材を備えたことを特徴とする。   The electric tool according to the invention of claim 1 is provided with a disk-like tool attached to a spindle protruding from a housing that houses a motor, the housing is provided with a dust collecting cover that covers the disk-like tool, and the dust collecting cover includes: An electric power tool having a tool insertion opening into which a rotation stopping tool for stopping rotation of the spindle can be inserted into the dust collection cover, and the dust collection cover includes an opening / closing member for opening and closing the tool insertion opening. It is characterized by that.

請求項２の発明は、請求項１において、前記開閉部材は、前記集塵カバーに装着されて前記工具挿入口を塞ぐリング状のゴム部材であることを特徴とする。   According to a second aspect of the present invention, in the first aspect, the opening / closing member is a ring-shaped rubber member that is attached to the dust collecting cover and closes the tool insertion port.

請求項１の発明に係る電動工具によれば、開閉部材が集塵カバーに形成した工具挿入口を塞ぐことで、集塵カバーの密閉度が向上する。これに伴って、集塵カバー内における粉塵の集塵効率を高めることができる。また開閉部材が集塵カバーに工具挿入口を開口させることで、回転止め工具を工具挿入口から集塵カバー内に挿入可能となる。その結果、回転止め工具でスピンドルを回転止めすることが可能になる。
請求項２の発明によれば、リング状のゴム部材が前記工具挿入口を塞ぐことで、集塵カバーの密閉度が向上する。これに伴って、集塵カバー内における粉塵の集塵効率を高めることができる。また前記ゴム部材を捲り上げることで、集塵カバーに工具挿入口を開口させることが可能になる。これにより、回転止め工具を工具挿入口から集塵カバー内に挿入して、回転止め工具でスピンドルを回転止めすることが可能になる。 According to the electric tool of the first aspect of the present invention, the sealing degree of the dust collecting cover is improved by closing the tool insertion opening formed in the dust collecting cover by the opening / closing member. Along with this, dust collection efficiency of the dust in the dust collection cover can be increased. The opening / closing member opens the tool insertion opening in the dust collection cover, so that the rotation stop tool can be inserted into the dust collection cover from the tool insertion opening. As a result, it is possible to stop the spindle from rotating with the rotation stopping tool.
According to invention of Claim 2, the sealing degree of a dust collection cover improves because a ring-shaped rubber member block | closes the said tool insertion port. Along with this, dust collection efficiency of the dust in the dust collection cover can be increased. Further, by raising the rubber member, it is possible to open a tool insertion opening in the dust collecting cover. As a result, it becomes possible to insert the rotation stop tool into the dust collecting cover from the tool insertion port and stop the rotation of the spindle with the rotation stop tool.

本実施形態のディスクグラインダの側断面図である。It is a sectional side view of the disc grinder of this embodiment. 同ディスクグラインダが備える集塵カバーの平面図である。It is a top view of a dust collection cover with which the disc grinder is provided. 同ディスクグラインダのスピンドルを回転止めするときの説明図である。It is explanatory drawing when stopping the rotation of the spindle of the disk grinder.

本発明の実施形態を図１ないし図３を参照しつつ説明する。図１に示すディスクグラインダ１は、ハウジング１０と集塵カバー２０とを備えている。ハウジング１０は、モータハウジング１１と、ギヤハウジング１５とによって構成されている。なお、ディスクグラインダ１は本発明の電動工具の一例である。   An embodiment of the present invention will be described with reference to FIGS. A disc grinder 1 shown in FIG. 1 includes a housing 10 and a dust collecting cover 20. The housing 10 includes a motor housing 11 and a gear housing 15. The disc grinder 1 is an example of the electric tool of the present invention.

モータハウジング１１は、筒状に形成されてモータＭを収容する。モータＭの回転軸１２は、軸受１３を介してモータハウジング１１内に回転可能に支持されている。回転軸１２の先端には第１ベベルギヤ１４が設けられている。   The motor housing 11 is formed in a cylindrical shape and accommodates the motor M. A rotating shaft 12 of the motor M is rotatably supported in the motor housing 11 via a bearing 13. A first bevel gear 14 is provided at the tip of the rotating shaft 12.

ギヤハウジング１５は、モータハウジング１１の前方（図１中の左側）に組み付けられている。ギヤハウジング１５内には、モータハウジング１１から回転軸１２が突入している。加えてギヤハウジング１５内には、スピンドル１６が軸受１７、１８を介して回転可能な状態で回転軸１２と直交状に支持されている。スピンドル１６の上方側には第２ベベルギヤ１９が外装されている。この第２ベベルギヤ１９に第１ベベルギヤ１４が噛合することにより、回転軸１２の回転がスピンドル１６に伝達される。スピンドル１６の下端は、ギヤハウジング１５の下方へ突出している。スピンドル１６の下端部の外周面には雄ネジ部１６Ａが形成されている。このディスクグライダ１では円盤状の研削工具（図示せず。）が、インナフランジと雄ネジ部１６Ａに螺合したロックナットとで挟持されてスピンドル１６に取り付けられる。なお、円盤状の研削工具は本発明の円盤状工具の一例である。   The gear housing 15 is assembled in front of the motor housing 11 (left side in FIG. 1). A rotating shaft 12 projects from the motor housing 11 into the gear housing 15. In addition, a spindle 16 is supported in the gear housing 15 so as to be orthogonal to the rotary shaft 12 in a state of being rotatable via bearings 17 and 18. A second bevel gear 19 is provided on the upper side of the spindle 16. When the first bevel gear 14 is engaged with the second bevel gear 19, the rotation of the rotary shaft 12 is transmitted to the spindle 16. The lower end of the spindle 16 protrudes downward from the gear housing 15. A male screw portion 16 </ b> A is formed on the outer peripheral surface of the lower end portion of the spindle 16. In the disk glider 1, a disc-shaped grinding tool (not shown) is sandwiched between an inner flange and a lock nut screwed into the male screw portion 16A and attached to the spindle 16. The disk-shaped grinding tool is an example of the disk-shaped tool of the present invention.

集塵カバー２０は、図１及び図２に示すように、本体カバー２１と、補助カバー２２と、プレート２３と、ホルダ部２４と、ゴムリング２６とを備えている。本体カバー２１及び補助カバー２２は樹脂によって成形されている。本体カバー２１の上面には、スピンドル１６を挿通可能な挿通孔２１Ａが開口する。補助カバー２２は、本体カバー２１に対して着脱可能に取り付けられている。補助カバー２２を本体カバー２１に取り付けた状態では、集塵カバー２０は、円盤状の研削工具よりも大径で下向きに開口する略椀形状をなし前記研削工具の周囲を覆う。本体カバー２１の外面には、本体カバー２１の内部と連通する集塵筒２１Ｂが設けられている。この集塵筒２１Ｂには、吸引ホースを介して集塵機が接続可能である。   As shown in FIGS. 1 and 2, the dust collection cover 20 includes a main body cover 21, an auxiliary cover 22, a plate 23, a holder portion 24, and a rubber ring 26. The main body cover 21 and the auxiliary cover 22 are formed of resin. An insertion hole 21 </ b> A through which the spindle 16 can be inserted opens on the upper surface of the main body cover 21. The auxiliary cover 22 is detachably attached to the main body cover 21. In a state in which the auxiliary cover 22 is attached to the main body cover 21, the dust collection cover 20 has a substantially bowl shape having a larger diameter and opening downward than the disc-shaped grinding tool, and covers the periphery of the grinding tool. A dust collection cylinder 21 </ b> B that communicates with the inside of the main body cover 21 is provided on the outer surface of the main body cover 21. A dust collector can be connected to the dust collection cylinder 21B via a suction hose.

プレート２３は、金属製であって４本のネジ２３Ａによって本体カバー２１の上面に固定されている。プレート２３には、本体カバー２１の挿通孔２１Ａと連通する開口部２３Ｂが形成されている。ホルダ部２４は、金属製で、開口部２３Ｂと同心の円環状とされてプレート２３の上面と一体に形成されている。ホルダ部２４をギヤハウジング１５の下端部に嵌め合わせてネジ２４Ａで締結することで、集塵カバー２０はギヤハウジング１５に連結される。   The plate 23 is made of metal and is fixed to the upper surface of the main body cover 21 by four screws 23A. The plate 23 has an opening 23 </ b> B that communicates with the insertion hole 21 </ b> A of the main body cover 21. The holder portion 24 is made of metal, has an annular shape concentric with the opening portion 23 </ b> B, and is formed integrally with the upper surface of the plate 23. The dust collecting cover 20 is connected to the gear housing 15 by fitting the holder portion 24 to the lower end portion of the gear housing 15 and fastening with the screw 24 </ b> A.

図１及び図３に示すように、プレート２３とホルダ部２４との境界付近に当たるホルダ部２４の根元部分には、工具挿入口２４Ｂが形成されている。工具挿入口２４Ｂは、スパナ２５を集塵カバー２０の外部から内部へ挿入するために用いられる。さらに、ゴムリング２６が前記根元部分の外周面に沿って嵌められている。ゴムリング２６の下端部には、放射方向に張り出すフランジ部２６Ａ（図３参照。）が形成されている。図１に示すように、ゴムリング２６は前記根元部分の外周面に密着して工具挿入口２４Ｂを常時閉塞すると共に、フランジ部２６Ａはプレート２３の上面に密着してゴムリング２６と前記上面との隙間を塞ぐ。なお、ゴムリング２６は本発明のリング状のゴム部材の一例である。   As shown in FIGS. 1 and 3, a tool insertion port 24 </ b> B is formed at the base portion of the holder portion 24 that is in the vicinity of the boundary between the plate 23 and the holder portion 24. The tool insertion port 24 </ b> B is used to insert the spanner 25 from the outside to the inside of the dust collection cover 20. Further, a rubber ring 26 is fitted along the outer peripheral surface of the root portion. A flange portion 26 </ b> A (see FIG. 3) that projects in the radial direction is formed at the lower end portion of the rubber ring 26. As shown in FIG. 1, the rubber ring 26 is in close contact with the outer peripheral surface of the base portion and always closes the tool insertion opening 24 </ b> B, and the flange portion 26 </ b> A is in close contact with the upper surface of the plate 23 and the rubber ring 26 and the upper surface. To close the gap. The rubber ring 26 is an example of a ring-shaped rubber member of the present invention.

次にディスクグラインダ１の動作を説明する。このディスクグラインダ１によって被加工物の被処理面を研削する場合には、作業者がモータハウジング１１を把持してスイッチをＯＮ状態にすることでモータＭを駆動させると共に集塵機を作動させる。モータＭの駆動に伴って回転する研削工具を、被処理面に当てながら被処理面上を移動させることで被処理面を研削する。被処理面の研削時に発生した粉塵は、集塵カバー２０の集塵筒２１Ｂに向けた吸引力によって集塵筒２１Ｂから吸引ホースを介して集塵機へ収集される。このときゴムリング２６は工具挿入口２４Ｂを閉塞すると共に、フランジ部２６Ａは、ゴムリング２６とプレート２３の上面との隙間を塞いでいる。したがって集塵カバー２０の内部と外部とが連通することがなく、集塵カバー２０の密閉度を向上させて粉塵が集塵カバー２０の外部に飛散することを防止できる。よって、集塵カバー２０が粉塵を集塵する効率が高まる。   Next, the operation of the disc grinder 1 will be described. When the surface to be processed of the workpiece is ground by the disc grinder 1, the operator holds the motor housing 11 and turns on the switch to drive the motor M and operate the dust collector. The surface to be processed is ground by moving a grinding tool rotating with the driving of the motor M on the surface to be processed while being applied to the surface to be processed. Dust generated during grinding of the surface to be processed is collected from the dust collection cylinder 21B to the dust collector via the suction hose by the suction force toward the dust collection cylinder 21B of the dust collection cover 20. At this time, the rubber ring 26 closes the tool insertion opening 24 </ b> B, and the flange portion 26 </ b> A closes the gap between the rubber ring 26 and the upper surface of the plate 23. Therefore, the inside and outside of the dust collection cover 20 do not communicate with each other, and the sealing degree of the dust collection cover 20 can be improved to prevent dust from scattering outside the dust collection cover 20. Therefore, the efficiency with which the dust collection cover 20 collects dust increases.

一方、例えば摩耗した研削工具を交換する場合にスピンドル１６を任意に回転止めするロック機構が故障したときには、スパナ２５でスピンドル１６を回転止めする作業が必要になる。この場合には、図３に示すようにゴムリング２６を捲り上げることで工具挿入口２４Ｂが集塵カバー２０に開口する。その後図示するように、スパナ２５を工具挿入口２４Ｂから集塵カバー２０内に挿入してスピンドル１６に設けた面取部に係止することで、スピンドル１６の回転止めが可能になる。なお、スパナ２５は本発明の回転止め工具の一例である。   On the other hand, for example, when the worn grinding tool is replaced, when the lock mechanism for arbitrarily stopping the spindle 16 breaks down, the spanner 25 needs to stop the spindle 16 from rotating. In this case, as shown in FIG. 3, the tool insertion port 24 </ b> B opens in the dust collection cover 20 by raising the rubber ring 26. Thereafter, as shown in the drawing, the spindle 16 can be prevented from rotating by inserting the spanner 25 into the dust collecting cover 20 from the tool insertion port 24B and engaging with the chamfered portion provided on the spindle 16. The spanner 25 is an example of the rotation stop tool of the present invention.

＜本実施形態の効果＞
本実施形態のディスクグラインダ１では、ゴムリング２６が工具挿入口２４Ｂを閉塞することで、集塵カバー２０の密閉度が向上する。これに伴って、集塵カバー２０内における粉塵の集塵効率を高めることができる。また、ゴムリング２６を捲り上げることで、工具挿入口２４Ｂを集塵カバー２０に開口させることが可能になる。これにより、スパナ２５を工具挿入口２４Ｂから集塵カバー２０内に挿入して、スパナ２５でスピンドル１６を回転止めすることが可能になる。 <Effect of this embodiment>
In the disc grinder 1 of the present embodiment, the rubber ring 26 closes the tool insertion port 24B, whereby the sealing degree of the dust collecting cover 20 is improved. Accordingly, the dust collection efficiency of the dust collection cover 20 can be increased. Further, the tool insertion port 24 </ b> B can be opened in the dust collection cover 20 by raising the rubber ring 26. Thereby, the spanner 25 can be inserted into the dust collecting cover 20 from the tool insertion opening 24 </ b> B, and the spindle 16 can be prevented from rotating by the spanner 25.

本発明は、上述した実施形態に限定されるものではなく、発明の趣旨を逸脱しない範囲内において構成の一部を適宜変更して実施できる。例えば上述した実施形態とは異なり、ゴムリング２６に代えてゴム製のＯリングを、前記根元部分の外周面に沿って嵌めることで、Ｏリングが工具挿入口２４Ｂを閉塞するようにしてもよい。   The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing a part of the configuration without departing from the spirit of the invention. For example, unlike the above-described embodiment, a rubber O-ring may be fitted along the outer peripheral surface of the root portion instead of the rubber ring 26 so that the O-ring closes the tool insertion port 24B. .

また上述した実施形態とは異なり、ホルダ部２４に、例えばヒンジ部材を介して上下方向に回転可能な開閉板を取り付けて、この開閉板によって工具挿入口２４Ｂを開閉自在に塞いでもよい。これにより、上述した実施形態と同様に、集塵カバー２０内における集塵効率を高めることができ、スパナ２５でスピンドル１６を回転止めすることが可能になる。   Unlike the above-described embodiment, an opening / closing plate that can be rotated in the vertical direction via a hinge member, for example, may be attached to the holder portion 24, and the tool insertion port 24B may be opened and closed with this opening / closing plate. Thereby, similarly to the above-described embodiment, the dust collection efficiency in the dust cover 20 can be increased, and the spindle 16 can be prevented from rotating by the spanner 25.

さらに上述したゴムリング２６に代えて、ホルダ部２４に着脱可能なゴム磁石によって、工具挿入口２４Ｂを開閉自在に塞いでもよい。この場合にも、上述した実施形態と同様に、集塵カバー２０内における集塵効率を高めることができ、スパナ２５でスピンドル１６を回転止めすることが可能になる。なお、上記の開閉板及びゴム磁石は本発明の開閉部材の一例である。加えて、上述した実施形態では、本発明をディスクグラインダに適用する例を示したが、これに限らず、本発明をサンダや集塵カバーを備えたカッタ等の電動工具に適用してもよい。   Further, instead of the above-described rubber ring 26, the tool insertion opening 24B may be opened and closed by a rubber magnet that can be attached to and detached from the holder portion 24. Also in this case, as in the above-described embodiment, the dust collection efficiency in the dust cover 20 can be increased, and the spindle 16 can be prevented from rotating by the spanner 25. The opening / closing plate and the rubber magnet are examples of the opening / closing member of the present invention. In addition, in the above-described embodiment, an example in which the present invention is applied to a disk grinder has been described. However, the present invention is not limited thereto, and the present invention may be applied to an electric tool such as a cutter having a sander or a dust collecting cover. .

１・・ディスクグラインダ、１０・・ハウジング、１１・・モータハウジング、１５・・ギヤハウジング、１６・・スピンドル、２０・・集塵カバー、２４Ｂ・・工具挿入口、２５・・スパナ、２６・・ゴムリング、Ｍ・・モータ。   DESCRIPTION OF SYMBOLS 1 ... Disc grinder, 10 ... Housing, 11 ... Motor housing, 15 ... Gear housing, 16 ... Spindle, 20 ... Dust collection cover, 24B ... Tool insertion slot, 25 ... Spanner, 26 ... Rubber ring, M ・ ・ Motor.

Claims (2)

モータを収容したハウジングから突出させたスピンドルに円盤状工具を取り付け、前記ハウジングに、前記円盤状工具を覆う集塵カバーを備え、該集塵カバーに、前記スピンドルを回転止めする回転止め工具を前記集塵カバー内に挿入可能な工具挿入口を形成した電動工具であって、
前記集塵カバーに、前記工具挿入口を開閉自在に塞ぐ開閉部材を備えたことを特徴とする電動工具。 A disk-shaped tool is attached to a spindle protruding from a housing that houses a motor, and the housing is provided with a dust collection cover that covers the disk-shaped tool, and the anti-rotation tool that stops the rotation of the spindle is provided in the dust collection cover. An electric tool having a tool insertion opening that can be inserted into the dust collection cover,
An electric power tool characterized in that the dust collecting cover is provided with an opening / closing member for freely opening and closing the tool insertion port. 前記開閉部材は、前記集塵カバーに装着されて前記工具挿入口を塞ぐリング状のゴム部材であることを特徴とする請求項１に記載の電動工具。   The electric tool according to claim 1, wherein the opening / closing member is a ring-shaped rubber member that is attached to the dust collecting cover and closes the tool insertion port.
JP2011079521A 2011-03-31 2011-03-31 Power tool Withdrawn JP2012213820A (en)

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US13/405,992 US20120252328A1 (en) 2011-03-31 2012-02-27 Power tool
EP12157709A EP2505308A1 (en) 2011-03-31 2012-03-01 Power tool
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