JP2007320258A - Portable circular saw - Google Patents

Portable circular saw Download PDF

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Publication number
JP2007320258A
JP2007320258A JP2006155085A JP2006155085A JP2007320258A JP 2007320258 A JP2007320258 A JP 2007320258A JP 2006155085 A JP2006155085 A JP 2006155085A JP 2006155085 A JP2006155085 A JP 2006155085A JP 2007320258 A JP2007320258 A JP 2007320258A
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saw
cover
chip
saw cover
chip discharge
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JP2006155085A
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JP4715640B2 (en
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Hiroyuki Saito
博幸 斉藤
Hideaki Terajima
秀晃 寺島
Shinji Takano
晋二 高野
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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 circular saw capable of selecting the outflow path of a chip and is excellent in workability. <P>SOLUTION: The portable circular saw having a dust cover 4 which is attached to a saw cover 1 and forms a chip discharge flow path communicating with the inside of the saw cover 1 above the saw cover 1 in front of a cutting direction comprises a chip discharge path change means 6 capable of selectively suppressing the outflow of the chip into a chip outflow path above the saw cover 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、のこ刃の回転駆動により切削時に切粉が発生する構成をした携帯用丸のこに関するものである。   The present invention relates to a portable circular saw having a configuration in which chips are generated during cutting by rotational driving of a saw blade.

従来の携帯用丸のこの一例を図４を用いて説明する。   One example of a conventional portable circle will be described with reference to FIG.

従来の携帯用丸のこは、図示しないモータと、モータにより回転駆動されるのこ刃２と、のこ刃２を覆うソーカバー１と、ソーカバー１に取付けられ、切断時に被削材上を摺動するベース７とを有する構成をしている。   A conventional portable circular saw includes a motor (not shown), a saw blade 2 that is rotationally driven by the motor, a saw cover 1 that covers the saw blade 2, and a saw cover 1 that is attached to the saw cover 1 and slides on the work material when cutting. It has the structure which has the base 7 which moves.

ソーカバー１には、ベース７下方ののこ刃２を覆う安全カバー３が回動可能に保持されている。   A safety cover 3 that covers the saw blade 2 below the base 7 is rotatably held on the saw cover 1.

また、ソーカバー１には、ソーカバー１上壁を覆う形状をし、ソーカバー１の上方に空間である切粉排出流路を形成するダストカバー４が取付けられると共に、ソーカバー１の切断方向前方（図示右側）にはソーカバー１内部とダストカバー４内部とを連通するための穴部からなる切粉入口部１ａが形成されている。更に、ダストカバー４の切断方向後方には、ソーカバー１上方の切粉排出流路と連通する穴部からなる切粉排出部４ａが形成されており、これによって、切断時にソーカバー１内で発生した切粉が切粉入口部１ａを介してダストカバー４とソーカバー１との間の切粉排出流路を通り、切断方向後方の切粉排出部４ａから排出される構成をした携帯用丸のこがあった。
実開平５−５３３２号公報 In addition, a dust cover 4 is attached to the saw cover 1 so as to cover the upper wall of the saw cover 1 and forms a chip discharge channel that is a space above the saw cover 1, and the saw cover 1 is cut forward (right side in the figure). ) Is formed with a chip inlet 1a composed of a hole for communicating the inside of the saw cover 1 and the inside of the dust cover 4. Further, a chip discharge portion 4a composed of a hole communicating with the chip discharge flow path above the saw cover 1 is formed behind the dust cover 4 in the cutting direction, and is generated in the saw cover 1 at the time of cutting. A portable circular saw having a configuration in which chips pass through the chip discharge passage between the dust cover 4 and the saw cover 1 through the chip inlet 1a and are discharged from the chip discharge section 4a at the rear in the cutting direction. was there.
Japanese Utility Model Publication No. 5-5332

上記した従来の携帯用丸のこは、ダストカバー４を設けた構成とすることで、切粉を携帯用丸のこ本体から離間した位置に切粉を排出することができるという利点があるものであるが、反面、例えば、湿った被削材の切断などの場合には、ダストカバー４内の切粉排出流路内に切粉が堆積し、詰まってしまうなどの問題が発生する場合があった。   The conventional portable circular saw described above has an advantage that the chips can be discharged to a position separated from the portable circular saw body by providing the dust cover 4. However, on the other hand, in the case of, for example, cutting a wet work material, there is a case where problems such as clogging and clogging occur in the chip discharge flow path in the dust cover 4. there were.

また、下方向に工具本体を進めながら行う切断作業の場合には、切粉に重力が作用することで、切粉が切粉排出部からスムーズに排出されず、切断方向前方の切断箇所付近に切粉が浮遊するなどして作業性が低下してしまう場合があった。   Also, in the case of cutting work performed while the tool body is advanced downward, gravity acts on the chips, so that the chips are not smoothly discharged from the chip discharge part, and near the cutting point in front of the cutting direction. In some cases, workability deteriorates due to floating chips.

本発明の目的は、上記問題点を解消し、作業性の良い携帯用丸のこを提供することである。   An object of the present invention is to solve the above problems and provide a portable circular saw with good workability.

上記目的は、ソーカバーに取付けられ、切断方向前方においてソーカバー内部と連通する切粉排出流路をソーカバー上方に形成するダストカバーとを有する携帯用丸のこであって、ソーカバー上方の切粉流出流路内への切粉の流出を選択的に抑制可能な切粉排出路変更手段を設けることによって達成される。   The above object is a portable circular saw that is attached to a saw cover and has a dust cover that forms a chip discharge channel that communicates with the inside of the saw cover in front of the cutting direction. This is achieved by providing a chip discharge path changing means capable of selectively suppressing the outflow of chips into the road.

本発明によれば、ソーカバー上方の切粉排出流路内への切粉の流出を選択的に抑制可能な切粉排出路変更手段を設けたことによって、切断作業状況などに応じて任意に切粉の排出路を選択可能となり、切粉排出路内への切粉の流出を抑制した場合には、切粉は、ソーカバー内を排出流路として通過し切断方向後方から排出されるようになり、切断作業状況によって切粉がダストカバー内の切粉排出路に詰まるなどして作業性が低下してしまうことを抑制する携帯用丸のこを提供できるようになる。   According to the present invention, by providing the chip discharge path changing means capable of selectively suppressing the outflow of the chips into the chip discharge flow path above the saw cover, it is possible to cut arbitrarily according to the cutting work situation or the like. When the powder discharge path can be selected and the outflow of chips into the chip discharge path is suppressed, the chips pass through the saw cover as a discharge flow path and are discharged from the rear in the cutting direction. According to the cutting work situation, it becomes possible to provide a portable circular saw that suppresses the deterioration of workability due to the clogging of the chips in the chip discharge path in the dust cover.

本発明携帯用丸のこの一実施形態を図１〜図３を用いて説明する。   One embodiment of the portable circle of the present invention will be described with reference to FIGS.

図に示すように、本発明携帯用丸のこは、モータ５と、モータ５により回転駆動されるのこ刃２と、のこ刃２を覆うソーカバー１と、ソーカバー１と相対回動可能に取付けられ、底面からののこ刃２の突出量を調整可能なベース７とを有する構成をしている。９は、ベース７に設けられ、ソーカバー１とベース７とが相対回動し、のこ刃２の突出量を調整した際に回動状態を固定するためのリンクである。   As shown in the drawing, the portable circular saw of the present invention is configured to be capable of rotating relative to the motor 5, the saw blade 2 that is rotationally driven by the motor 5, the saw cover 1 that covers the saw blade 2, and the saw cover 1. The base 7 is attached and can adjust the protruding amount of the saw blade 2 from the bottom surface. Reference numeral 9 denotes a link provided on the base 7 for fixing the rotating state when the saw cover 1 and the base 7 are relatively rotated and the protruding amount of the saw blade 2 is adjusted.

ソーカバー１には、ソーカバー１上壁を覆う形状をし、ソーカバー１の上方に空間である切粉排出流路を形成するダストカバー４が取付けられると共に、ソーカバー１の切断方向前方（図１及び図２の右側）にはソーカバー１内部とダストカバー４内部とを連通するための穴部からなる切粉入口部１ａが形成されている。   The saw cover 1 has a shape that covers the upper wall of the saw cover 1, and a dust cover 4 that forms a chip discharge channel that is a space above the saw cover 1 and is attached to the saw cover 1 in front of the cutting direction (FIGS. 1 and On the right side of 2, a chip inlet portion 1 a including a hole for communicating the inside of the saw cover 1 and the inside of the dust cover 4 is formed.

ダストカバー４の切断方向後方には、ソーカバー１上方の切粉排出流路と連通する穴部からなる切粉排出部４ａが形成されており、これによって、切断時にソーカバー１内で発生した切粉が切粉入口部１ａを介してダストカバー４とソーカバー１との間の切粉排出流路を通り、切断方向後方の切粉排出部４ａから排出される構成となっている。   On the rear side of the dust cover 4 in the cutting direction, a chip discharge portion 4a including a hole communicating with the chip discharge flow path above the saw cover 1 is formed, whereby the chips generated in the saw cover 1 at the time of cutting are formed. Passes through the chip discharge passage between the dust cover 4 and the saw cover 1 through the chip inlet 1a, and is discharged from the chip discharge section 4a behind the cutting direction.

ソーカバー１の切粉入口部１ａ周辺には、回動可能なストッパ部６が設けられており、回動位置に応じて、ダストカバー４内の切粉排出流路とソーカバー１内との連通部である切粉入口部１ａを閉塞可能となっている。   A rotatable stopper portion 6 is provided around the chip inlet 1a of the saw cover 1, and a communication portion between the chip discharge flow path in the dust cover 4 and the saw cover 1 according to the rotation position. It is possible to close the chip inlet 1a.

図１は、切粉入口部１ａを開口し、切粉がダストカバー４内の切粉排出流路内に流出するようにした状態を示し、図２はストッパ部６によって切粉入口部１ａを閉塞し、切粉がダストカバー４内の切粉排出流路内に流出せずにソーカバー１内を排出流路として通過し切断方向後方から排出されるようにした状態を示している。符号１０は、切粉の流れを示す。   FIG. 1 shows a state in which the chip inlet 1a is opened and the chips flow out into the chip discharge passage in the dust cover 4, and FIG. The state is shown in which the plug is closed and the chips pass through the saw cover 1 as a discharge channel without being discharged into the chip discharge channel in the dust cover 4 and are discharged from the rear in the cutting direction. Reference numeral 10 indicates the flow of chips.

本発明の切粉排出路変更手段及び遮蔽部は、ストッパ部６から構成される。   The chip discharge path changing means and the shielding part of the present invention are constituted by a stopper part 6.

図示しないが、ストッパ部６はソーカバー１外部から作業者が任意に操作可能で、図１及び図２の状態で係止可能な構成をしている。   Although not shown, the stopper portion 6 can be arbitrarily operated by an operator from the outside of the saw cover 1 and can be locked in the state shown in FIGS. 1 and 2.

なお、切粉入口部１ａののこ刃２の回転方向後方側端部よりも、ストッパ部６の回動支点を斜め下側に配置したことによって、切粉入口部１ａを閉塞した際のストッパ部６がソーカバー１内壁にほぼ沿うようにし、切粉がスムーズにソーカバー１内で流れるようにしている。   In addition, the stopper when the chip inlet 1a is closed by disposing the rotation fulcrum of the stopper 6 obliquely below the end in the rotational direction of the saw blade 2 of the chip inlet 1a. The portion 6 is substantially along the inner wall of the saw cover 1 so that the chips flow smoothly in the saw cover 1.

上記したような構成とすることによって、切断作業状況などに応じて任意に切粉の排出路を選択可能となり、ダストカバー４内の切粉排出路内への切粉の流出を抑制した場合には、切粉は、ソーカバー１内を排出流路として通過し切断方向後方から排出されるようになり、切断作業状況によって切粉がダストカバー４内の切粉排出流路に詰まるなどして作業性が低下してしまうことを抑制する携帯用丸のこを提供できるようになる。   By adopting the configuration as described above, it becomes possible to arbitrarily select a chip discharge path according to the cutting work situation and the like, and when the outflow of the chip into the chip discharge path in the dust cover 4 is suppressed. The chip passes through the saw cover 1 as a discharge channel and is discharged from the rear in the cutting direction. Depending on the cutting operation situation, the chip is clogged in the chip discharge channel in the dust cover 4 or the like. It becomes possible to provide a portable circular saw that suppresses the deterioration of the performance.

また、図１に示す状態では、切粉を携帯用丸のこ本体から離間した位置に切粉を排出することができるものであるが、このように本体から離間した位置に切粉を排出することを要求しない作業状態に応じて、図２の状態とすることが可能となり、作業性を向上させることができる。   Further, in the state shown in FIG. 1, the chips can be discharged to a position separated from the portable circular saw main body, but the chips are discharged to a position separated from the main body in this way. It is possible to achieve the state shown in FIG. 2 according to the work state that does not require this, and workability can be improved.

なお、上記実施形態では、ソーカバー１に切粉排出路変更手段である回動可能なストッパ部６を設けた構成としたが、ダストカバー４に設けた構成としても良いと共に、ソーカバー１及びダストカバー４から取り外し可能な構成であっても良い。   In the above embodiment, the saw cover 1 is provided with the rotatable stopper portion 6 which is the chip discharge path changing means. However, the saw cover 1 and the dust cover may be provided with the dust cover 4. 4 may be removable.

本発明携帯用丸のこの一実施形態を示す要部断面正面図。The principal part cross-sectional front view which shows this one Embodiment of this invention portable round. 図１の携帯用丸のこの一動作状態を示す要部断面正面図。The principal part cross-sectional front view which shows this one operation state of the portable circle | round | yen of FIG. 図１の携帯用丸のこを示す断面側面図。Sectional side view which shows the portable circular saw of FIG. 従来の携帯用丸のこの一例を示す要部断面正面図。The principal part cross-sectional front view which shows this example of the conventional portable round.

符号の説明Explanation of symbols

１はソーカバー、１ａは切粉入口部、２はのこ刃、３は安全カバー、４はダストカバー、４ａは切粉排出部、６はストッパ部、７はベースである。
1 is a saw cover, 1a is a chip inlet portion, 2 is a saw blade, 3 is a safety cover, 4 is a dust cover, 4a is a chip discharge portion, 6 is a stopper portion, and 7 is a base.

Claims (2)

モータと、該モータにより回転駆動されるのこ刃と、該のこ刃を覆うソーカバーと、前記ソーカバーに取付けられ、切断時に被削材上を摺動するベースと、前記ソーカバーに取付けられ、切断方向前方において前記ソーカバー内部と連通する切粉排出流路を前記ソーカバー上方に形成するダストカバーとを有する携帯用丸のこであって、
前記ソーカバー上方の切粉流出流路内への切粉の流出を選択的に抑制可能な切粉排出路変更手段を設けたことを特徴とする携帯用丸のこ。 A motor, a saw blade that is rotationally driven by the motor, a saw cover that covers the saw blade, a base that is attached to the saw cover and that slides on the work material when cutting, and a saw cover that is attached to the saw cover and cut A portable circular saw having a dust cover that forms a chip discharge channel communicating with the inside of the saw cover in the front direction, above the saw cover;
A portable circular saw provided with a chip discharge path changing means capable of selectively suppressing the outflow of chips into the chip outflow passage above the saw cover. 前記切粉排出路変更手段は、前記ソーカバー内部と前記ダストカバー内部との連通部近傍に設けられ、前記連通部を遮蔽する遮蔽部を有することを特徴とする請求項１記載の携帯用丸のこ。
The portable chip according to claim 1, wherein the chip discharge path changing means includes a shielding portion that is provided in the vicinity of a communicating portion between the inside of the saw cover and the dust cover and shields the communicating portion. This.
JP2006155085A 2006-06-02 2006-06-02 Portable circular saw Expired - Fee Related JP4715640B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010012584A (en) * 2008-07-07 2010-01-21 Panasonic Electric Works Co Ltd Electric circular saw
JP2011079182A (en) * 2009-10-06 2011-04-21 Jia Hsin Cheng Enterprise Co Ltd Rotary sawing machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH055333U (en) * 1991-07-11 1993-01-26 リヨービ株式会社 Cover structure of circular saw blade in electric circular saw
JP2006088559A (en) * 2004-09-24 2006-04-06 Makita Corp Cutting machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH055333U (en) * 1991-07-11 1993-01-26 リヨービ株式会社 Cover structure of circular saw blade in electric circular saw
JP2006088559A (en) * 2004-09-24 2006-04-06 Makita Corp Cutting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010012584A (en) * 2008-07-07 2010-01-21 Panasonic Electric Works Co Ltd Electric circular saw
JP2011079182A (en) * 2009-10-06 2011-04-21 Jia Hsin Cheng Enterprise Co Ltd Rotary sawing machine

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