JP2009240466A - Portable cutting tool - Google Patents

Portable cutting tool Download PDF

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JP2009240466A
JP2009240466A JP2008089352A JP2008089352A JP2009240466A JP 2009240466 A JP2009240466 A JP 2009240466A JP 2008089352 A JP2008089352 A JP 2008089352A JP 2008089352 A JP2008089352 A JP 2008089352A JP 2009240466 A JP2009240466 A JP 2009240466A
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light
dust cover
cutting blade
cutting tool
resin
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JP5229538B2 (en
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Shunei Sasaki
俊英 佐々木
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Koki Holdings Co Ltd
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Hitachi Koki Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable cutting tool capable of preventing illumination deterioration around a cutting blade owing to sticking of dust without increasing the cost by adding other parts. <P>SOLUTION: In the portable cutting tool 1 in which the cutting blade 4 is driven using a motor as a driving source, the periphery of the cutting blade 4 is covered by a dust cover 14, and a light 17 is provided for irradiating light in the vicinity of the cutting blade 4, the dust cover 14 is constituted of a transparent resin and the vicinity of the cutting tool 4 is illuminated by taking the light irradiated from the light 17 into the resin of the dust cover 14 and transmitting the same. Further, the dust cover 14 is constituted to a right-and-left dual-partitioned structure and the light 17 is arranged on the partitioned face. Furthermore, a rib 14a for taking the light irradiated from the light 17 into the resin of the dust cover 14 is formed along the irradiation direction of the light in the site below the light 17 of the dust cover 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、切断刃付近を光を照射するライトを備えた携帯用切断工具に関するものである。   The present invention relates to a portable cutting tool provided with a light that irradiates light near a cutting blade.

携帯用切断工具を用いて木材や石膏ボード等の被切断材を切断する作業においては、粉塵が周囲に飛散して作業環境を汚染するため、切断刃の周囲をダストカバーによって覆う構成が採用されていた（例えば、特許文献１参照）。   When cutting materials such as wood or gypsum board using a portable cutting tool, dust is scattered around and contaminates the work environment. (For example, refer to Patent Document 1).

又、切断箇所の視認性を高めるためにライトを設け、該ライトによって切断刃の周辺を照明したり、ダストカバーに光ファイバー等の光伝達部品を設けることが行われていた。
実公平１−０２６４０２号公報 Moreover, in order to improve the visibility of a cutting location, a light is provided, and the periphery of the cutting blade is illuminated with the light, and a light transmission component such as an optical fiber is provided on a dust cover.
Japanese Utility Model Publication No. 1-026402

ところが、切断作業時に粉塵を発生する携帯用切断工具に切断刃の周辺を照明するライトを設けた場合、粉塵がダストカバーやライトに付着し、ライトから照射される光が粉塵によって遮られて切断刃まで到達せず、切断刃の周辺を十分照明することができないという問題があった。又、ダストカバーに光ファイバー等の光伝達部品を設けるとコストアップを招くという問題があった。   However, if a portable cutting tool that generates dust during cutting work is equipped with a light that illuminates the periphery of the cutting blade, dust adheres to the dust cover and light, and the light emitted from the light is blocked by the dust and cut. There was a problem that it did not reach the blade and could not sufficiently illuminate the periphery of the cutting blade. In addition, when a light transmission component such as an optical fiber is provided on the dust cover, there is a problem that the cost is increased.

本発明は上記問題に鑑みてなされたもので、その目的とする処は、別部品の追加によるコストアップを招くことなく、粉塵の付着による切断刃周辺の照明低下を防ぐことができる携帯用切断工具を提供することにある。   The present invention has been made in view of the above-mentioned problems, and the intended processing is portable cutting that can prevent a decrease in illumination around the cutting blade due to dust adhesion without incurring cost increase due to the addition of another part. To provide a tool.

上記目的を達成するため、請求項１記載の発明は、モータを駆動源として切断刃を駆動するとともに、前記切断刃の周囲をダストカバーで覆い、前記切断刃付近に光を照射するライトを設けて成る携帯用切断工具において、前記ダストカバーを透光性を有する樹脂で構成し、前記ライトから照射される光をダストカバーの樹脂内に取り込んで透過させることによって前記切断刃付近を照明することを特徴とする。   In order to achieve the above object, the invention according to claim 1 is provided with a light that drives the cutting blade using a motor as a drive source, covers the periphery of the cutting blade with a dust cover, and irradiates light in the vicinity of the cutting blade. In the portable cutting tool, the dust cover is made of a translucent resin, and the light irradiated from the light is taken into the resin of the dust cover and transmitted to illuminate the vicinity of the cutting blade. It is characterized by.

請求項２記載の発明は、請求項１記載の発明において、前記ダストカバーを左右２分割構造とするとともに、その分割面上に前記ライトを配置したことを特徴とする。   According to a second aspect of the present invention, in the first aspect of the invention, the dust cover is divided into a left and right divided structure, and the light is arranged on the divided surface.

請求項３記載の発明は、請求項１又は２記載の発明において、前記ダストカバーの前記ライトの下方の部位に、前記ライトから照射された光をダストカバーの樹脂内に取り込むためのリブを光の照射方向に沿って形成したことを特徴とする。   According to a third aspect of the present invention, in the first or second aspect of the present invention, a rib for taking the light emitted from the light into the resin of the dust cover is lighted at a portion below the light of the dust cover. It was formed along the irradiation direction.

請求項４記載の発明は、請求項１〜３の何れかに記載の発明において、前記ダストカバーの屈曲部をＲ形状又は斜面形状としたことを特徴とする。   According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the bent portion of the dust cover has an R shape or a slope shape.

請求項１記載の発明によれば、ダストカバーを透光性を有する樹脂で構成し、ライトから照射される光をダストカバーの透光性を有する樹脂内に取り込んで透過させることによって切断刃付近を照明するようにしたため、切断箇所の視認性が粉塵の付着によって低下することがなく、切断作業を正確且つ能率良く行うことができる。そして、この効果は光ファイバー等の別部品を追加することなく得られるため、コストアップを招くことがない。   According to the first aspect of the present invention, the dust cover is made of a light-transmitting resin, and the light irradiated from the light is taken into the light-transmitting resin of the dust cover so as to pass therethrough, thereby near the cutting blade. Therefore, the visibility of the cut portion is not lowered by the adhesion of dust, and the cutting operation can be performed accurately and efficiently. And since this effect is acquired without adding another components, such as an optical fiber, it does not cause a cost increase.

請求項２記載の発明によれば、ダストカバーを左右２分割構造とするとともに、その分割面上にライトを配置したため、ライトから出射される光をダストカバーの左右の分割片に均等に振り分けて該分割片の透光性を有する樹脂内を透過させることができ、切断刃の周辺を均一に照明して切断箇所の視認性を高めることができる。又、分割面にライトを配置したため、ライトの通路を簡単に構成することができる。   According to the second aspect of the present invention, since the dust cover has a left and right divided structure and the light is arranged on the divided surface, the light emitted from the light is equally distributed to the left and right divided pieces of the dust cover. The translucent resin of the divided pieces can be transmitted, and the periphery of the cutting blade can be uniformly illuminated to increase the visibility of the cut portion. In addition, since the lights are arranged on the dividing surface, the light path can be easily configured.

請求項３記載の発明によれば、ダストカバーのライトの下方の部位にリブを形成したため、ライトから照射された光をリブによってダストカバーの透光性を有する樹脂内に取り込むことができる。又、リブによってライトの光を無駄なく効率良く利用することができる。   According to the third aspect of the present invention, since the rib is formed in the lower part of the light of the dust cover, the light irradiated from the light can be taken into the resin having translucency of the dust cover by the rib. Further, the light of the light can be efficiently used without waste by the rib.

請求項４記載の発明によれば、ダストカバーの屈曲部をＲ形状又は斜面形状としたため、該ダストカバーの透光性を有する樹脂内に取り込まれたライトの光を屈曲部のＲ形状又は斜面形状で反射させて該屈曲部に沿って透過させることができ、透過した光をダストカバーの端面から出射させて切断刃の周辺を効率良く照明することができる。   According to the fourth aspect of the present invention, since the bent portion of the dust cover has an R shape or a slope shape, the light of the light taken into the light-transmitting resin of the dust cover is converted into the R shape or the slope surface of the bent portion. It can be reflected by the shape and transmitted along the bent portion, and the transmitted light can be emitted from the end face of the dust cover to efficiently illuminate the periphery of the cutting blade.

以下に本発明の実施の形態を添付図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は本発明に係る携帯用切断工具の左側面図、図２は同携帯用切断工具の破断左側面図、図３は同携帯用切断工具の正面図、図４は同携帯用切断工具前部の底面図、図５は同携帯用切断機前部の右側面図、図６は同携帯用切断機前部の左側面図、図７は図６のＡ−Ａ線断面図である。   1 is a left side view of the portable cutting tool according to the present invention, FIG. 2 is a left side view of the portable cutting tool, FIG. 3 is a front view of the portable cutting tool, and FIG. 4 is the portable cutting tool. FIG. 5 is a right side view of the front portion of the portable cutting machine, FIG. 6 is a left side view of the front portion of the portable cutting machine, and FIG. 7 is a sectional view taken along line AA in FIG. .

図示の携帯用切断工具１は、左右２分割構造のハウジング２を備えており、図２に示すように、このハウジング２内には駆動源であるモータ３と、該モータ３の回転を減速する減速機及びモータ３の減速された回転をナイフ状の切断刃４の揺動及び上下運動に変換するクランク機構等が収納されている。   The illustrated portable cutting tool 1 includes a housing 2 having a right and left split structure. As shown in FIG. 2, the housing 3 has a motor 3 serving as a driving source and a rotation speed of the motor 3 being reduced. A reduction mechanism and a crank mechanism that converts the reduced rotation of the motor 3 into swinging and vertical movement of the knife-like cutting blade 4 are housed.

又、ハウジング２の前端下部（図１及び図２の左方を前方とする）には案内定盤５が取り付けられており、ハウジング２の後端には充電可能なバッテリ６が着脱可能に装着され、ハウジング２のハンドル部２Ａの下面にはトリガスイッチ７が設けられている。   A guide surface plate 5 is attached to the lower part of the front end of the housing 2 (the left side in FIGS. 1 and 2 is the front), and a rechargeable battery 6 is detachably attached to the rear end of the housing 2. A trigger switch 7 is provided on the lower surface of the handle portion 2A of the housing 2.

ところで、図２に示すように、前記モータ３から前方に向かって延びる出力軸（モータ軸）３ａの先端には小径のベベルギヤ８が結着されている。又、ハウジング２の前部には回転軸９がモータ軸３ａに対して直角（図２の紙面垂直方向）に配されており、この回転軸９には大径のベベルギヤ１０と不図示の偏心カムが結着されており、ベベルギヤ１０はモータ軸３ａの先端に結着された前記ベベルギヤ８に噛合している。尚、ベベルギヤ８，１０によって前記減速機構が構成されている。   As shown in FIG. 2, a small-diameter bevel gear 8 is attached to the tip of an output shaft (motor shaft) 3a extending forward from the motor 3. A rotating shaft 9 is arranged at a right angle (perpendicular to the paper surface in FIG. 2) with respect to the motor shaft 3a at the front of the housing 2. The rotating shaft 9 has a large-diameter bevel gear 10 and an eccentricity (not shown). A cam is attached, and the bevel gear 10 meshes with the bevel gear 8 attached to the tip of the motor shaft 3a. The bevel gears 8 and 10 constitute the speed reduction mechanism.

更に、ハウジング２内の前部には、その上端部が前記偏心カムに係合する切断刃取付ロッド１１が設けられており、この切断刃取付ロッド１１の下部は不図示の揺動支点を中心として前後に揺動及び上下に移動可能であって、その下端部には保持具１２及びこれに挿通する２本のボルト１３によって前記切断刃４が取り付けられている。ここで、図７に示すように、前記案内定盤５には前後方向に長いスリット状の刃口５ａが貫設されており、切断刃４は刃口５ａを貫通してその一部が案内定盤５の下方へ突出している。尚、偏心カムとこれに係合する切断刃取付ロッド１１によって前記クランク機構が構成されている。   Further, a cutting blade mounting rod 11 whose upper end engages with the eccentric cam is provided at the front portion in the housing 2, and the lower portion of the cutting blade mounting rod 11 is centered on a rocking fulcrum (not shown). The cutting blade 4 is attached to the lower end portion thereof by a holder 12 and two bolts 13 inserted therethrough. Here, as shown in FIG. 7, the guide platen 5 is provided with a slit-like blade edge 5a extending in the front-rear direction, and the cutting blade 4 penetrates the blade edge 5a and a part thereof is guided. It protrudes downward from the surface plate 5. The eccentric mechanism and the cutting blade mounting rod 11 engaged with the eccentric cam constitute the crank mechanism.

又、ハウジング２の前部には、粉塵の飛散を防ぐための箱状のダストカバー１４が図５に示すボルト１５によって取り付けられており、このダストカバー１４によって切断刃４の周囲が覆われている。ここで、ダストカバー１４は、ポリカーボネイト（ＰＣ）等の透明又は半透明等の透光性を有する樹脂で構成されており、図３に示すように、ハウジング２の分割面と同じ面で左右に２分割され、該ダストカバー１４の左右の分割片１４Ａ，１４Ｂは、図５に示す２本の固定ねじ１６によって結合一体化されている。   Further, a box-shaped dust cover 14 for preventing dust scattering is attached to the front portion of the housing 2 by bolts 15 shown in FIG. 5, and the periphery of the cutting blade 4 is covered by the dust cover 14. Yes. Here, the dust cover 14 is made of a transparent or translucent resin such as polycarbonate (PC), and is left and right on the same surface as the dividing surface of the housing 2 as shown in FIG. The left and right divided pieces 14A and 14B of the dust cover 14 are joined and integrated by two fixing screws 16 shown in FIG.

ところで、本実施の形態では、図６及び図７に示すように、ハウジング２の前面上部には、該ハウジング２の左右の分割面に沿って側面視円弧状の凸部２ａが突設されており、この凸部２ａの下面はダストカバー１４の左右の分割面１４Ａ，１４Ｂに向かって開口している。そして、ハウジング２の凸部２ａ内には、図７に示すように、ＬＥＤ等のライト１７が収容されており、このライト１７から延びる不図示のリード線は、ハウジング２の凸部２ａ内及びハウジング２内を通って前記バッテリ６に接続されている。   By the way, in the present embodiment, as shown in FIGS. 6 and 7, a convex portion 2 a having an arc shape in a side view is projected from the front upper portion of the housing 2 along the left and right divided surfaces of the housing 2. The lower surface of the convex portion 2a opens toward the left and right divided surfaces 14A and 14B of the dust cover 14. A light 17 such as an LED is accommodated in the convex portion 2a of the housing 2 as shown in FIG. 7, and lead wires (not shown) extending from the light 17 are formed in the convex portion 2a of the housing 2 and The battery 6 is connected through the housing 2.

他方、透光性を有する樹脂によって構成されたダストカバー１４は、前述のように左右の分割片１４Ａ，１４Ｂが２本の固定ねじ１６によって結合一体化されているが、図７に示すように、該ダストカバー１４の分割面上に前記ライト１７が配置されている。又、図７に示すように、ダストカバー１４のライト１４の下方の部位には、ライト１４から照射された光を当該ダストカバー１４の樹脂内に取り込むための幅の狭いリブ１４ａが光の照射方向（上下方向）に沿って形成されている。即ち、ダストカバー１４の左右の分割片１４Ａ，１４Ｂのライト１７の下方に部位に凹部（窪み）１４ｂがそれぞれ形成されることによって、その分割面に沿うリブ１４ａが形成されており、このリブ１４ａから下方において左右の分割片１４Ａ，１４Ｂには水平部１４ｃと各水平部１４ｃから垂直下方に延びる垂直部１４ｄがそれぞれ形成されている。   On the other hand, the dust cover 14 made of light-transmitting resin has the left and right divided pieces 14A and 14B joined and integrated by two fixing screws 16 as described above, but as shown in FIG. The light 17 is disposed on the divided surface of the dust cover 14. Further, as shown in FIG. 7, a narrow rib 14a for taking the light irradiated from the light 14 into the resin of the dust cover 14 is irradiated with light at a portion below the light 14 of the dust cover 14. It is formed along the direction (vertical direction). That is, a recess 14b is formed in a portion below the light 17 of the left and right divided pieces 14A and 14B of the dust cover 14, thereby forming a rib 14a along the divided surface. A horizontal portion 14c and a vertical portion 14d extending vertically downward from each horizontal portion 14c are formed on the left and right divided pieces 14A and 14B, respectively.

そして、ダストカバー１４の左右の分割片１４Ａ，１４Ｂのリブ１４ａよりも下方の部位においては、図７に示すように、リブ１４ａと水平部１４ｃとの接続部である直角の屈曲部１４ｅはＲ形状に成形され、又、水平部１４ｃと垂直部１４ｄとの接続部である直角の屈曲部１４ｆもＲ形状に成形されている。   And in the site | part below the rib 14a of the left and right division | segmentation pieces 14A and 14B of the dust cover 14, as shown in FIG. 7, the right-angled bending part 14e which is a connection part of the rib 14a and the horizontal part 14c is R. Further, a right-angled bent portion 14f which is a connecting portion between the horizontal portion 14c and the vertical portion 14d is also formed in an R shape.

次に、以上のように構成された携帯用切断工具１の動作について説明する。   Next, operation | movement of the portable cutting tool 1 comprised as mentioned above is demonstrated.

作業者がハウジング２のハンドル部２Ａを把持して指でトリガスイッチ７を引いてこれをＯＮすると、バッテリ６からモータ３に通電されて該モータ３が起動され、このモータ３の出力軸（モータ軸）３ａが回転駆動される。そして、このモータ軸３ａの回転は、ベベルギヤ８，１０によって減速及び回転方向が直角に切り換えられて回転軸９に伝達され、該回転軸９とこれに結着された不図示の偏心カムが所定の速度で回転駆動される。   When the operator holds the handle portion 2A of the housing 2 and pulls the trigger switch 7 with a finger to turn it on, the motor 3 is energized from the battery 6 to start the motor 3, and the motor 3 output shaft (motor The shaft 3a is driven to rotate. The rotation of the motor shaft 3a is transmitted to the rotating shaft 9 with the bevel gears 8 and 10 decelerated and rotated in a right angle, and is transmitted to the rotating shaft 9, and an eccentric cam (not shown) connected to the rotating shaft 9 is predetermined. It is rotationally driven at a speed of

上述のように偏心カムが回転すると、この偏心カムにその上部が係合する切断刃取付ロッド１１が下部の不図示の支点を中心として揺動しつつ上下運動をするため、その下端に取り付けられたナイフ状の切断刃４も同様の運動を行い、この切断刃４によって石膏ボード等の不図示の被切断材が切断される。そして、この切断によって粉塵が発生するが、前述のように切断刃４の周囲はダストカバー１４によって覆われているため、粉塵の周囲への飛散はダストカバー１４によって防がれる。   When the eccentric cam rotates as described above, the cutting blade mounting rod 11 whose upper portion engages with the eccentric cam moves up and down around a lower fulcrum (not shown), and is therefore attached to the lower end thereof. The knife-like cutting blade 4 also performs the same movement, and a cutting material (not shown) such as a gypsum board is cut by the cutting blade 4. Dust is generated by this cutting, but since the periphery of the cutting blade 4 is covered with the dust cover 14 as described above, the dust cover 14 prevents the dust from being scattered.

而して、上述のように切断によって粉塵が発生すると、この粉塵はダストカバー１４の内面に付着して切断箇所の視認性が低下するが、このような場合には不図示のスイッチをＯＮしてバッテリ６からライト１７に給電することによって該ライト１７を点灯させれば、このライト１７から照射される光がダストカバー１４の透明な樹脂内に取り込まれ、この取り込まれた光は樹脂内を透過して切断刃４の周辺を照明するため、切断箇所の視認性が粉塵の付着によって低下することがなく、切断作業を正確且つ能率良く行うことができる。   Thus, when dust is generated by cutting as described above, the dust adheres to the inner surface of the dust cover 14 and the visibility of the cut portion is reduced. In such a case, a switch (not shown) is turned on. When the light 17 is turned on by supplying power to the light 17 from the battery 6, the light irradiated from the light 17 is taken into the transparent resin of the dust cover 14, and the taken light passes through the resin. Since it permeate | transmits and illuminates the periphery of the cutting blade 4, the visibility of a cutting location does not fall by adhesion of dust, and a cutting operation can be performed correctly and efficiently.

即ち、図７に矢印にて示すように、ライト１７から垂直下方に出射される光は、その下部に形成されたダストカバー１４のリブ１４ａによって該ダストカバー１４の透明な樹脂の内部に取り込まれ、その一部は照射光Ｌ１として切断刃４を上方から照らし、残りの光はダストカバー１４のＲ形状を成す屈曲部１４ｅに沿って直角に屈曲してダストカバー１４の左右の分割片１４Ａ，１４Ｂの各水平部１４ｃの内部を水平に透過した後、Ｒ形状を成す屈曲部１４ｆに沿って直角に屈曲してダストカバー１４の左右の分割片１４Ａ，１４Ｂの各垂直部１４ｄの内部を垂直下方に透過し、最後に各垂直部１４ｄの下端面から照射光Ｌ２，Ｌ３として大気中に出射して切断刃４の周辺を照らす。尚、本実施の形態では、ダストカバー１４の左右の分割片１４Ａ，１４Ｂの各屈曲部１４ｅ，１４ｆをＲ形状としたが、斜面形状とすることによって樹脂内を透過する光を反射させ、その光の透過方向を直角に曲げるようにしても良い。   That is, as indicated by arrows in FIG. 7, light emitted vertically downward from the light 17 is taken into the transparent resin of the dust cover 14 by the ribs 14a of the dust cover 14 formed in the lower part. , A part thereof illuminates the cutting blade 4 from above as irradiation light L1, and the remaining light is bent at right angles along the bent portion 14e forming the R shape of the dust cover 14 to be divided into left and right divided pieces 14A, After passing horizontally through the inside of each horizontal portion 14c of 14B, it is bent at a right angle along a bent portion 14f forming an R shape, and the inside of each vertical portion 14d of the left and right divided pieces 14A, 14B of the dust cover 14 is vertically The light is transmitted downward, and finally emitted from the lower end surface of each vertical portion 14d to the atmosphere as irradiation light L2 and L3 to illuminate the periphery of the cutting blade 4. In the present embodiment, the bent portions 14e and 14f of the left and right divided pieces 14A and 14B of the dust cover 14 have an R shape. However, by making the inclined shape, the light transmitted through the resin is reflected, The light transmission direction may be bent at a right angle.

以上のように、本実施の形態では、ダストカバー１４を透明な樹脂で構成し、該ダストカバー１４のライト１７の下方の部位にリブ１４ａを形成したため、ライト１７から照射される光をリブ１４ａからダストカバー１４の透明な樹脂内に取り込んで透過させることによって切断刃４付近を照明することができる。この結果、切断箇所の視認性が粉塵のダストカバー１４内面への付着によって低下することがなく、切断作業を正確且つ能率良く行うことができる。そして、この効果は光ファイバー等の別部品を追加することなく得られるため、コストアップを招くことがない。   As described above, in the present embodiment, the dust cover 14 is made of a transparent resin, and the rib 14a is formed in the portion of the dust cover 14 below the light 17, so that the light irradiated from the light 17 is irradiated with the rib 14a. Then, the vicinity of the cutting blade 4 can be illuminated by taking it into the transparent resin of the dust cover 14 and transmitting it. As a result, the visibility of the cut portion does not deteriorate due to the dust adhering to the inner surface of the dust cover 14, and the cutting operation can be performed accurately and efficiently. And since this effect is acquired without adding another components, such as an optical fiber, it does not cause a cost increase.

又、本実施の形態では、ダストカバー１４を左右２分割構造とするとともに、その分割面上にライト１７を配置したため、ライト１７から出射される光をダストカバー１４の左右の分割片１４Ａ，１４Ｂに均等に振り分けて該分割片１４Ａ，１４Ｂの透明な樹脂内を透過させることができ、切断刃４の周辺を均一に照明して切断箇所の視認性を高めることができる。又、ダストカバー１４の分割面にライト１７を配置したため、該ライト１７の通路を管単に構成することができる。   In this embodiment, since the dust cover 14 has a left and right divided structure and the light 17 is disposed on the divided surface, the light emitted from the light 17 is divided into left and right divided pieces 14A and 14B of the dust cover 14. Can be distributed evenly and transmitted through the transparent resin of the divided pieces 14A and 14B, and the periphery of the cutting blade 4 can be uniformly illuminated to enhance the visibility of the cut portion. Further, since the light 17 is disposed on the divided surface of the dust cover 14, the passage of the light 17 can be simply configured as a tube.

更に、本実施の形態では、ダストカバー１４の左右の分割片１４Ａ，１４Ｂの屈曲部１４ｅ，１４ｆをＲ形状としたため、左右の分割片１４Ａ，１４Ｂの透明な樹脂内に取り込まれたライト１７の光を屈曲部１４ｅ，１４ｆのＲ形状で反射させて該屈曲部１４ｅ，１４ｆに沿って透過させることができ、透過した光を左右の分割片１４Ａ，１４Ｂの下端面から出射させて切断刃４の周辺を効率良く照明することができる。又、凹部１４ｂを形成することによりライト１７からの光がリブ１４ａに集中するため、ダストカバー１４の上側で光が分散することがなく、切断刃４付近を確実に照射することができる。   Further, in the present embodiment, the bent portions 14e and 14f of the left and right divided pieces 14A and 14B of the dust cover 14 have an R shape, so that the light 17 taken into the transparent resin of the left and right divided pieces 14A and 14B The light can be reflected by the R shape of the bent portions 14e and 14f and transmitted along the bent portions 14e and 14f, and the transmitted light is emitted from the lower end surfaces of the left and right divided pieces 14A and 14B. Can be efficiently illuminated. Moreover, since the light from the light 17 is concentrated on the rib 14a by forming the recess 14b, the light is not dispersed on the upper side of the dust cover 14, and the vicinity of the cutting blade 4 can be reliably irradiated.

尚、以上は本発明をナイフ状の切断刃を揺動及び上下運動させることによって切断を行う携帯用切断工具に適用した形態について説明したが、本発明は、円板状の回転刃を回転させて切断を行うディスクグラインダ等の他の任意の携帯用切断工具に対しても同様に適用可能であることは勿論である。   Although the present invention has been described with respect to a mode in which the present invention is applied to a portable cutting tool that performs cutting by swinging and vertically moving a knife-shaped cutting blade, the present invention rotates a disk-shaped rotating blade. Of course, the present invention can be similarly applied to any other portable cutting tool such as a disc grinder that performs cutting.

本発明に係る携帯用切断工具の左側面図である。It is a left view of the portable cutting tool which concerns on this invention. 本発明に係る携帯用切断工具の破断左側面図である。It is a fracture | rupture left side view of the portable cutting tool which concerns on this invention. 本発明に係る携帯用切断工具の正面図である。It is a front view of the portable cutting tool which concerns on this invention. 本発明に係る携帯用切断工具前部の底面図である。It is a bottom view of the front part of the portable cutting tool which concerns on this invention. 本発明に係る携帯用切断工具前部の右側面図である。It is a right view of the portable cutting tool front part which concerns on this invention. 本発明に係る携帯用切断工具前部の左側面図である。It is a left view of the portable cutting tool front part which concerns on this invention. 図６のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG.

符号の説明Explanation of symbols

１ 携帯用切断工具
２ ハウジング
２Ａ ハウジングのハンドル部
２ａ ハウジングの凸部
３ モータ
３ａ モータの出力軸（モータ軸）
４ 切断刃
５ 案内常盤
５ａ 案内常盤の刃口
６ バッテリ
７ トリガスイッチ
８ ベベルギヤ
９ 回転軸
１０ ベベルギヤ
１１ 切断刃取付ロッド
１２ 保持具
１３ ボルト
１４ ダストカバー
１４Ａ，１４Ｂ ダストカバーの分割片
１４ａ ダストカバーのリブ
１４ｂ ダストカバーの凹部（窪み）
１４ｃ ダストカバーの水平部
１４ｄ ダストカバーの垂直部
１４ｅ，１４ｆ ダストカバーの屈曲部
１５ ボルト
１６ 固定ねじ
１７ ライト
Ｌ１，Ｌ２ 照射光 DESCRIPTION OF SYMBOLS 1 Portable cutting tool 2 Housing 2A Housing handle part 2a Housing convex part 3 Motor 3a Motor output shaft (motor shaft)
4 Cutting Blade 5 Guide Standing Board 5a Guide Standing Board Blade 6 Battery 7 Trigger Switch 8 Bevel Gear 9 Rotating Shaft 10 Bevel Gear 11 Cutting Blade Mounting Rod 12 Holder 13 Bolt 14 Dust Cover 14A, 14B Dust Cover Split Piece 14a Dust Cover Rib 14b Concave part (dent) of dust cover
14c Horizontal portion of dust cover 14d Vertical portion of dust cover 14e, 14f Bending portion of dust cover 15 Bolt 16 Fixing screw 17 Light L1, L2 Irradiation light

Claims (4)

モータを駆動源として切断刃を駆動するとともに、前記切断刃の周囲をダストカバーで覆い、前記切断刃付近に光を照射するライトを設けて成る携帯用切断工具において、
前記ダストカバーを透光性を有する樹脂で構成し、前記ライトから照射される光をダストカバーの樹脂内に取り込んで透過させることによって前記切断刃付近を照明することを特徴とする携帯用切断工具。 In the portable cutting tool which drives the cutting blade using a motor as a driving source, covers the periphery of the cutting blade with a dust cover, and provides a light for irradiating light near the cutting blade,
A portable cutting tool characterized in that the dust cover is made of a light-transmitting resin, and the light irradiated from the light is taken into the resin of the dust cover and transmitted to illuminate the vicinity of the cutting blade. . 前記ダストカバーを左右２分割構造とするとともに、その分割面上に前記ライトを配置したことを特徴とする請求項１記載の携帯用切断工具。   The portable cutting tool according to claim 1, wherein the dust cover has a left and right divided structure, and the light is disposed on the divided surface. 前記ダストカバーの前記ライトの下方の部位に、前記ライトから照射された光をダストカバーの樹脂内に取り込むためのリブを光の照射方向に沿って形成したことを特徴とする請求項１又は２記載の携帯用切断工具。   The rib for taking in the light irradiated from the said light in the resin of a dust cover was formed in the site | part under the said light of the said dust cover along the irradiation direction of light. The portable cutting tool as described. 前記ダストカバーの屈曲部をＲ形状又は斜面形状としたことを特徴とする請求項１〜３の何れかに記載の携帯用切断工具。
The portable cutting tool according to claim 1, wherein the bent portion of the dust cover has an R shape or a slope shape.
JP2008089352A 2008-03-31 2008-03-31 Portable cutting tool Active JP5229538B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012040659A (en) * 2010-08-20 2012-03-01 Makita Corp Electric power tool
DE202016005482U1 (en) 2015-09-18 2016-09-26 Makita Corporation cutting tool
JP2021178509A (en) * 2019-06-27 2021-11-18 株式会社マキタ Board cutter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07328839A (en) * 1994-06-02 1995-12-19 Masayoshi Takahashi Dust removing cover for portable rotary tool
JPH10559A (en) * 1996-04-10 1998-01-06 Katsuyuki Hashimoto Grinding device, dust collector fixture for grinding device, cutting device and dust collector fixture for cutting device
JP2000198021A (en) * 1999-01-08 2000-07-18 Hitachi Koki Co Ltd Protective cover of metal cutter
JP2006507134A (en) * 2002-11-25 2006-03-02 ローベルト　ボツシユ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Handheld power tool
JP2007268635A (en) * 2006-03-30 2007-10-18 Max Co Ltd Power tool with luminaire
JP2008018498A (en) * 2006-07-13 2008-01-31 Makita Corp Cutter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07328839A (en) * 1994-06-02 1995-12-19 Masayoshi Takahashi Dust removing cover for portable rotary tool
JPH10559A (en) * 1996-04-10 1998-01-06 Katsuyuki Hashimoto Grinding device, dust collector fixture for grinding device, cutting device and dust collector fixture for cutting device
JP2000198021A (en) * 1999-01-08 2000-07-18 Hitachi Koki Co Ltd Protective cover of metal cutter
JP2006507134A (en) * 2002-11-25 2006-03-02 ローベルト　ボツシユ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Handheld power tool
JP2007268635A (en) * 2006-03-30 2007-10-18 Max Co Ltd Power tool with luminaire
JP2008018498A (en) * 2006-07-13 2008-01-31 Makita Corp Cutter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012040659A (en) * 2010-08-20 2012-03-01 Makita Corp Electric power tool
DE202016005482U1 (en) 2015-09-18 2016-09-26 Makita Corporation cutting tool
JP2017056689A (en) * 2015-09-18 2017-03-23 株式会社マキタ Cutting tool
JP2021178509A (en) * 2019-06-27 2021-11-18 株式会社マキタ Board cutter
JP7098798B2 (en) 2019-06-27 2022-07-11 株式会社マキタ Board cutter

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