JP2543841Y2 - Cover structure of circular saw blade in electric circular saw - Google Patents
Cover structure of circular saw blade in electric circular sawInfo
- Publication number
- JP2543841Y2 JP2543841Y2 JP1991053789U JP5378991U JP2543841Y2 JP 2543841 Y2 JP2543841 Y2 JP 2543841Y2 JP 1991053789 U JP1991053789 U JP 1991053789U JP 5378991 U JP5378991 U JP 5378991U JP 2543841 Y2 JP2543841 Y2 JP 2543841Y2
- Authority
- JP
- Japan
- Prior art keywords
- circular saw
- cover
- saw blade
- safety cover
- lower guard
- Prior art date
- 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.)
- Expired - Lifetime
Links
Landscapes
- Sawing (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、電気丸鋸における丸鋸
刃のカバー構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover structure for a circular saw blade in an electric circular saw.
【０００２】[0002]
【従来の技術】電気丸鋸における従来の丸鋸刃のカバー
は、図５に示されるような構造となっている。2. Description of the Related Art A conventional circular saw blade cover in an electric circular saw has a structure as shown in FIG.
【０００３】すなわち、丸鋸刃１の上部を覆う安全カバ
ー２と、丸鋸刃１による被削材Ａの切断の進行と共に安
全カバー２内へと回動するロアガード３と、丸鋸刃１の
前部の切屑発生部を覆う横断面略コ字形のフロントカバ
ー４とを備えている。That is, a safety cover 2 that covers the upper part of the circular saw blade 1, a lower guard 3 that rotates into the safety cover 2 as the cutting of the workpiece A by the circular saw blade 1 proceeds, and a circular saw blade 1 And a front cover 4 having a substantially U-shaped cross section for covering the front chip generating portion.
【０００４】このようなカバー構造により、丸鋸刃１で
被削材Ａを切削することにより発生する切屑を安全カバ
ー２の排出孔５へと導き、切屑が周囲に飛散するのを防
止している。With such a cover structure, chips generated by cutting the work material A with the circular saw blade 1 are guided to the discharge hole 5 of the safety cover 2 to prevent the chips from scattering around. I have.
【０００５】[0005]
【考案が解決しようとする課題】しかしながら、上記従
来のカバー構造であると、図５に示されるように、フロ
ントカバー４と定盤６又は被削材Ａとの間に隙間７が存
在することから、切屑の一部が外部へと矢印の方向に飛
散するという問題を生ずる。However, in the above-mentioned conventional cover structure, a gap 7 exists between the front cover 4 and the surface plate 6 or the work material A as shown in FIG. This causes a problem that a part of the chips is scattered to the outside in the direction of the arrow.
【０００６】また、切断の進行と共に安全カバー２内を
フロントカバー４側に進出してきたロアガード３の内方
へも切屑の一部が侵入する。この切屑はロアガード３の
図５の状態における後部を経て外部に飛散してしまう。[0006] Further, as the cutting proceeds, some of the chips enter the inside of the lower guard 3 which has advanced into the safety cover 2 toward the front cover 4. The chips are scattered outside via the rear part of the lower guard 3 in the state shown in FIG.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するた
め、本第１の考案は、電気丸鋸における丸鋸刃の上部を
覆う安全カバーと、前記丸鋸刃による被削材の切断の進
行と共に安全カバー内へと回動するロアガードと、前記
丸鋸刃の前部の切屑発生部を覆う横断面略コ字形のフロ
ントカバーと、前記安全カバーに位置調節可能に連結さ
れた定盤とを有する丸鋸刃のカバー構造において、前記
フロントカバー本体は前記定盤の位置調節の際、前記安
全カバーに対してその上下方向に動く部位に連結されて
おり、前記フロントカバー本体の下部には前記定盤又は
前記被削材に接して前記切屑発生部を覆うスカート部が
設けられ、前記フロントカバー本体の後部には前記丸鋸
刃を挟んで切屑の後方への飛散を防ぐ遮蔽部が設けられ
た構成を採用し、本第２の考案は、前記ロアガードの前
記安全カバー内への完全収容時における先端位置と前記
遮蔽部の上部との間に介在して切屑を前記安全カバーと
前記ロアガードとの間に向ける整流板が設けられた構成
を採用している。Means for Solving the Problems In order to solve the above-mentioned problems, a first invention is to provide a safety cover for covering an upper portion of a circular saw blade in an electric circular saw, and the progress of cutting of a work material by the circular saw blade. A lower guard that pivots into the safety cover together with the front cover, a front cover having a substantially U-shaped cross section that covers the chip generation portion at the front of the circular saw blade, and a surface plate that is connected to the safety cover so that the position can be adjusted. In the circular saw blade cover structure, the front cover main body is connected to a portion that moves in the vertical direction with respect to the safety cover when adjusting the position of the surface plate, and the lower portion of the front cover main body is A skirt portion is provided to cover the chip generation portion in contact with the surface plate or the work material, and a shielding portion is provided at a rear portion of the front cover main body to prevent chips from scattering behind the circular saw blade. The book adopts the configuration The device of the second aspect is provided with a rectifying plate interposed between a tip position of the lower guard when the lower guard is completely housed in the safety cover and an upper part of the shielding portion to direct chips between the safety cover and the lower guard. The adopted configuration is adopted.
【０００８】[0008]
【作用】本第１の考案において、切屑発生部の上方の回
りは被削材等に接するスカート部が覆うので、被削材の
切断に伴って発生する切屑は周囲に飛散することなく上
昇する。従って、安全カバーと被削材等との間から外部
に飛散しない。In the first aspect of the present invention, since the skirt portion in contact with the work material or the like is covered above the chip generation portion, the chip generated due to the cutting of the work material rises without scattering around. . Therefore, it does not scatter outside from between the safety cover and the work material.
【０００９】また、フロントカバー本体の後部にある遮
蔽部がフロントカバー本体と共にスカート部の上方を筒
状に囲むので、スカート部内を上昇した切屑はロアガー
ドの外壁面と安全カバーの内壁面との間に向い、排出孔
から排出される。従って、切屑はロアガードの内壁面側
に入り込んで外部に飛散しなくなる。Further, since the shielding portion at the rear portion of the front cover body surrounds the upper portion of the skirt portion in a tubular shape together with the front cover body, chips rising inside the skirt portion are located between the outer wall surface of the lower guard and the inner wall surface of the safety cover. And is discharged from the discharge hole. Therefore, the chips do not enter the inner wall surface of the lower guard and scatter outside.
【００１０】本第２の考案において、フロントカバー本
体の上方に飛び出る切屑は整流板に衝突し、安全カバー
の内壁面に向う。このため、ロアガードの安全カバー内
への完全収容時における先端位置と遮蔽部の上部との間
から、切屑がロアガード内に侵入しなくなる。In the second aspect of the present invention, chips flying upward from the front cover main body collide with the current plate and face the inner wall surface of the safety cover. For this reason, chips do not enter the lower guard from between the position of the distal end when the lower guard is completely accommodated in the safety cover and the upper part of the shielding portion.
【００１１】[0011]
【実施例】以下、図１乃至図４に基づき、本考案に係る
電気丸鋸における丸鋸刃のカバー構造の実施例について
説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electric circular saw according to the present invention; FIG.
【００１２】本考案に係る丸鋸刃のカバー構造を有する
電気丸鋸は、図３及び図４に示されるように、定盤９の
上面に立設された回動用ブラケット１０と、この回動用
ブラケット１０に対して取り付けられた昇降用ブラケッ
ト１１とを有しており、昇降用ブラケット１１に対して
丸鋸本体１２が取り付けられている。An electric circular saw having a circular saw blade cover structure according to the present invention, as shown in FIGS. 3 and 4, a rotating bracket 10 erected on an upper surface of a surface plate 9 and a rotating bracket 10 for rotating the circular saw. A lifting / lowering bracket 11 attached to the bracket 10, and a circular saw main body 12 is attached to the lifting / lowering bracket 11.
【００１３】丸鋸本体１２は、丸鋸刃１３の駆動用モー
タ１４を含んでおり、定盤９との間で相対的に位置調節
が可能となっている。すなわち、丸鋸本体１２は、回動
用ブラケット１０に対して昇降用ブラケット１１を回動
させることにより定盤９に対する傾きを加減することが
でき、これにより丸鋸刃１３を定盤９に対して傾斜させ
て切断角度を調整することができる。また、昇降用ブラ
ケット１１に対して昇降させることにより定盤９に対す
る高さを加減することができ、これにより切込み深さを
調整することができる。The circular saw main body 12 includes a driving motor 14 for driving the circular saw blade 13, and the position of the circular saw main body 12 can be adjusted relative to the surface plate 9. That is, the circular saw main body 12 can adjust the inclination of the circular saw blade 13 with respect to the surface plate 9 by rotating the raising and lowering bracket 11 with respect to the rotation bracket 10. The cutting angle can be adjusted by tilting. Further, by raising and lowering with respect to the raising and lowering bracket 11, the height with respect to the surface plate 9 can be adjusted, whereby the cutting depth can be adjusted.
【００１４】また、丸鋸本体１２は、丸鋸刃１３の上部
を覆う安全カバー１５と、丸鋸刃１３による被削材Ａの
切断の進行と共に安全カバー１５内へと回動するロアガ
ード１６と、丸鋸刃１３の前部の切屑発生部１７（図１
参照）を覆う横断面略コ字形のフロントカバー１８とを
有している。The circular saw main body 12 includes a safety cover 15 that covers the upper part of the circular saw blade 13, and a lower guard 16 that rotates into the safety cover 15 as the circular saw blade 13 cuts the workpiece A. , A chip generating portion 17 in front of the circular saw blade 13 (FIG. 1)
And a front cover 18 having a substantially U-shaped cross section.
【００１５】しかして、この電気丸鋸で被削材Ａを切断
するには、図３に示されるように、電気丸鋸をそのハン
ドルを持って静止した被削材Ａに対して矢印方向に送
り、その回転する丸鋸刃１３を被削材Ａに当てる。切断
の進行と共にロアガード１６は被削材Ａの先端に押され
つつ上方に回動し安全カバー１５内に入り込む。また、
切断に伴い発生する切屑は、後で詳細に述べるように、
安全カバー１５内に沿って流れ、安全カバー１５の排出
口から所定の場所に向って排出される。In order to cut the work material A with the electric circular saw, as shown in FIG. 3, the electric circular saw is moved in the direction of the arrow with respect to the work material A which is stationary with its handle. Then, the rotating circular saw blade 13 is applied to the work material A. As the cutting proceeds, the lower guard 16 rotates upward while being pushed by the tip of the work material A, and enters the safety cover 15. Also,
Chips generated by cutting, as described in detail later,
It flows along the inside of the safety cover 15 and is discharged from a discharge port of the safety cover 15 toward a predetermined place.
【００１６】図１及び図２に示されるように、前記フロ
ントカバー１８におけるフロントカバー本体２１は、前
記定盤９の位置調節の際、安全カバー１５に対してその
上下方向に動く部位に連結されている。[0016] As shown in FIGS. 1 and 2, the front cover main body 21 in the front cover 18, the front
When the position of the table 9 is adjusted, it is connected to a portion that moves up and down with respect to the safety cover 15.
【００１７】すなわち、フロントカバー本体２１は、ア
ーム２２を介して昇降用ブラケット１１に連結固定され
ている。このため、丸鋸本体１２を昇降用ブラケット１
１に対して昇降させてもフロントカバー１８は定盤９上
の一定位置に保持されることとなる。That is, the front cover body 21 is connected and fixed to the lifting bracket 11 via the arm 22. For this reason, the circular saw body 12 is moved up and down the bracket 1
1, the front cover 18 is held at a fixed position on the surface plate 9.
【００１８】フロントカバー本体２１は、横断面略コ字
型の起立した屈曲板であり、その上部は安全カバー１５
内に入り込み、下部は安全カバー１５の下端と定盤９と
の間に介在している。The front cover body 21 is an upright bent plate having a substantially U-shaped cross section.
The lower part is interposed between the lower end of the safety cover 15 and the surface plate 9.
【００１９】前記フロントカバー本体２１の下部には、
基台８側の定盤９又は被削材Ａに接して切屑発生部１７
を覆うスカート部２３が設けられている。スカート部２
３は、弾性材であるゴムで出来ており、その上部はフロ
ントカバー本体２１の下縁に固着され、その下部の裾２
３ａは弾性変形を伴って定盤９の表面に密着している。
なお、定盤９の形によっては、スカート部２３の裾２３
ａは被削材Ａの表面に接触することもある。また、スカ
ート部２３がゴムで出来ていることから、傾斜して切断
する際にもスカート部の裾が定盤又は被削材Ａの表面に
接触することになる。At the lower part of the front cover body 21,
The chip generating portion 17 is in contact with the surface plate 9 or the work material A on the base 8 side.
Is provided. Skirt 2
Numeral 3 is made of rubber, which is an elastic material, and its upper part is fixed to the lower edge of the front cover body 21 and its lower hem 2
3a is in close contact with the surface of the surface plate 9 with elastic deformation.
In addition, depending on the shape of the surface plate 9, the skirt 23 of the skirt portion 23 may be used.
a may come into contact with the surface of the work material A. Further, since the skirt portion 23 is made of rubber, the skirt of the skirt portion comes into contact with the surface plate or the surface of the work material A even when cutting at an angle.
【００２０】これにより、切屑発生部１７の回りは完全
に覆われてしまい、切屑が安全カバー１５の前部と定盤
９との隙間から外部に飛散しなくなる。切屑はスカート
部２３内を上昇し、フロントカバー１８内に入り込む。
また、上述のようにフロントカバー本体２１は基台８側
に連結されていることから、切込量を最小にした場合で
あっても切屑発生部１７をカバーすることができる。As a result, the area around the chip generating portion 17 is completely covered, and the chip does not scatter outside from the gap between the front portion of the safety cover 15 and the surface plate 9. The chips rise inside the skirt portion 23 and enter the front cover 18.
Further, since the front cover main body 21 is connected to the base 8 side as described above, the chip generating portion 17 can be covered even when the cut amount is minimized.
【００２１】前記フロントカバー本体２１の後部は丸鋸
刃１３を挟むように上下に伸びており、その後縁は上に
行くに連れて安全カバー１５の前部内壁面側に傾斜して
いる。そして、そこには丸鋸刃１３を挟むことにより切
屑の後方への飛散を防ぐ遮蔽部２４が設けられている。The rear portion of the front cover body 21 extends vertically so as to sandwich the circular saw blade 13, and its rear edge is inclined toward the front inner wall surface of the safety cover 15 as going upward. Further, there is provided a shielding portion 24 for preventing the chips from scattering backward by sandwiching the circular saw blade 13.
【００２２】遮蔽部２４は、前記フロントカバー本体２
１の２つの平行な後縁に沿って接着されたスポンジ等か
らなる弾性部材であり、その内側面は丸鋸刃１３の鋸身
に接触している。The shielding portion 24 is provided on the front cover main body 2.
An elastic member made of sponge or the like which is bonded along two edges after parallel one, the inner surface thereof is in contact with the saw body <br/> of the circular saw blade 13.
【００２３】このため、前記スカート部２３内を上方に
通過した切屑は、フロントカバー本体２１及び遮蔽部２
４の内面に衝突しながら、或いは衝突しないでそのまま
安全カバー１５の内壁面に向かい、ロアガード１６の内
面の方へは向わないことになる。For this reason, the chips that have passed upward in the skirt portion 23 are removed by the front cover body 21 and the shielding portion 2.
4 collides with or does not collide with the inner surface of the lower guard 16 and does not face the inner surface of the lower guard 16.
【００２４】前記安全カバー１５における前記フロント
カバー１８の上部に対向する箇所から丸鋸刃１３の中心
軸の真上の箇所に至る部分には、丸鋸刃１３の歯に沿っ
た円弧から外側に向って湾曲状に膨出した膨出部２５が
設けられている。A portion of the safety cover 15 extending from a position facing the upper portion of the front cover 18 to a position directly above the center axis of the circular saw blade 13 extends outward from an arc along the teeth of the circular saw blade 13. A bulging portion 25 bulging in a curved shape is provided.
【００２５】前記フロントカバー１８から上方に飛び出
た切屑は、この膨出部２５の内面に当ってその反射角が
上向きとなり、ロアガード１６の内面方向へ飛散するこ
となく安全カバー１５内面に沿って排出口２０へと向う
こととなる。The chips that have spilled upward from the front cover 18 hit the inner surface of the bulging portion 25 and the reflection angle thereof is directed upward, and is discharged along the inner surface of the safety cover 15 without being scattered in the direction of the inner surface of the lower guard 16. It will go to the exit 20.
【００２６】なお、前記ロアガード１６の安全カバー１
５内への完全収容時における先端１６ａの位置と前記遮
蔽部２４の上部との間には整流板２６を設けてもよい。
この場合、整流板２６は、丸鋸刃１３の歯の周辺箇所を
跨ぐようにして安全カバー１５の内壁面に固着されてい
る。The lower guard 16 has a safety cover 1.
A rectifying plate 26 may be provided between the position of the distal end 16 a and the upper portion of the shielding portion 24 when completely housed in the inside 5.
In this case, the current plate 26 is fixed to the inner wall surface of the safety cover 15 so as to straddle the periphery of the teeth of the circular saw blade 13.
【００２７】前記フロントカバー１８を出た切屑は、こ
の整流板２６に当って安全カバー１５内面側へと反射す
るので、安全カバー１５とロアガード１６との間に向か
うこととなり、従ってロアガード１６内面方向へ飛散す
ることがなくなる。The chips coming out of the front cover 18 hit the straightening plate 26 and are reflected toward the inner surface of the safety cover 15, so that the chips are directed between the safety cover 15 and the lower guard 16, and therefore, toward the inner surface of the lower guard 16. No longer scatter.
【００２８】そして、安全カバー１５内面に沿って流れ
る切屑は安全カバー１５の後部の排出口２０から外部所
定箇所に向って排出されることとなる。次に、上記丸鋸
刃のカバー構造の作用について被削材の切断作業と共に
説明する。The chips flowing along the inner surface of the safety cover 15 are discharged from a discharge port 20 at the rear of the safety cover 15 to a predetermined external location. Next, the operation of the cover structure of the circular saw blade will be described together with the work of cutting the work material.
【００２９】図３及び図４に示されるように、電気丸鋸
を被削材Ａの上からあてがって矢印方向へ送ると、被削
材Ａの先端に押されてロアガード１６が安全カバー１５
内へと回動する。As shown in FIGS. 3 and 4, when the electric circular saw is applied from above the work material A and sent in the direction of the arrow, the lower guard 16 is pushed by the tip of the work material A, and the lower guard 16 is secured.
Swivels in.
【００３０】また、被削材Ａの切断により発生した切屑
は、図１及び図２に示されるように、スカート部２３及
びフロントカバー本体２１の内面に案内されつつ安全カ
バー１５の内面へと向う。As shown in FIGS. 1 and 2, chips generated by cutting the work material A are directed to the inner surface of the safety cover 15 while being guided by the inner surfaces of the skirt portion 23 and the front cover body 21. .
【００３１】ロアガード１６の先端は被削材Ａの切断が
進行するに連れて図１に示されるような位置に来るが、
そのような場合であっても整流板２６が切屑のロアガー
ド１６内面方向への飛散を遮断する。The tip of the lower guard 16 comes to a position as shown in FIG. 1 as the cutting of the work material A proceeds,
Even in such a case, the current plate 26 blocks the chips from scattering toward the inner surface of the lower guard 16.
【００３２】従って、切屑が排出口２０以外の箇所から
外部に飛散しなくなる。なお、この実施例について切屑
回収率の測定を行ったところ次のような結果が得られ
た。Therefore, chips are not scattered outside from places other than the discharge port 20. When the chip recovery rate of this example was measured, the following results were obtained.
【００３３】 測定方法は、従来の電気丸鋸と本考案の電気丸鋸によ
り、木材（厚さ３９ｍｍ、長さ５００ｍｍ）を３回ずつ
切断し、安全カバー２６の排出口３２に取り付けた切屑
回収箱で回収し、切屑の重量（Ａ）と回収されずに周辺
に飛散した切屑の重量（Ｂ）を夫々電子天秤により計測
するものとした。[0033] The measuring method is as follows: a conventional electric circular saw and an electric circular saw according to the present invention cut wood (thickness: 39 mm, length: 500 mm) three times and collect it in a chip collecting box attached to the outlet 32 of the safety cover 26. Then, the weight (A) of the chips and the weight (B) of the chips scattered around without being collected were measured by an electronic balance.
【００３４】なお、切込深さ７５ｍｍ、４５ｍｍは夫々
図６、図７に対応する。また、回収率は次式によった。The cutting depths of 75 mm and 45 mm correspond to FIGS. 6 and 7, respectively. The recovery rate was determined by the following equation.
【００３５】[0035]
【数１】 (Equation 1)
【００３６】[0036]
【考案の効果】本第１の考案は、以上のように構成され
るので、切屑発生部の回りをスカート部で覆い、被削材
の切断に伴って発生する切屑が安全カバーと被削材等と
の間を通って外部に飛散するのを防止することができ
る。[Effects of the Invention] Since the first invention is constructed as described above, the periphery of the chip generation portion is covered with the skirt portion, and the chips generated as the work material is cut are removed by the safety cover and the work material. It can be prevented from scattering to the outside through the space between them.
【００３７】また、フロントカバー本体の後部にある遮
蔽部によりフロントカバー本体と共にスカート部の上方
を筒状に囲むことができるので、スカート部内を上昇し
た切屑をロアガードの外壁面と安全カバーの内壁面との
間に向けることができる。従って、切屑がロアガードの
内壁面側を通って外部に飛散するのを防止することがで
きる。Further, since the upper portion of the skirt portion can be cylindrically surrounded together with the front cover body by the shielding portion provided at the rear portion of the front cover body, chips raised in the skirt portion can be removed from the outer wall surface of the lower guard and the inner wall surface of the safety cover. Can be turned between. Therefore, it is possible to prevent chips from being scattered outside through the inner wall surface side of the lower guard.
【００３８】本第２の考案によれば、フロントカバー本
体の上方に飛び出る切屑を整流板により安全カバーの内
壁面に向けることができる。従って、ロアガードの安全
カバー内への完全収容時における先端位置と遮蔽部の上
部との間から切屑がロアガード内に侵入して外部へ飛散
するのを好適に防止することができる。According to the second aspect of the present invention, chips flying upward from the front cover main body can be directed to the inner wall surface of the safety cover by the current plate. Therefore, it is possible to preferably prevent chips from entering the lower guard from being scattered to the outside from between the tip position and the upper portion of the shielding portion when the lower guard is completely housed in the safety cover.
【図１】本考案に係る丸鋸刃のカバー構造の垂直断面図
である。FIG. 1 is a vertical sectional view of a cover structure of a circular saw blade according to the present invention.
【図２】上記丸鋸刃のカバー構造を電気丸鋸の前から見
た部分切欠断面図である。FIG. 2 is a partially cutaway sectional view of the cover structure of the circular saw blade as viewed from the front of an electric circular saw.
【図３】上記カバー構造を備える電気丸鋸の側面図であ
る。FIG. 3 is a side view of an electric circular saw having the cover structure.
【図４】上記カバー構造を備える電気丸鋸の正面図であ
る。FIG. 4 is a front view of an electric circular saw having the cover structure.
【図５】従来のカバー構造の垂直断面図である。FIG. 5 is a vertical sectional view of a conventional cover structure.
Ａ…被削材 ９…定盤 １３…丸鋸刃 １５…安全カバー １６…ロアガード １７…切屑発生部 １８…フロントカバー ２０…排出口 ２１…フロントカバー本体 ２２…アーム ２３…スカート部 ２４…遮蔽部 ２５…膨出部 ２６…整流板 A: Work material 9: Surface plate 13: Circular saw blade 15: Safety cover 16: Lower guard 17: Chip generation part 18: Front cover 20: Discharge port 21: Front cover body 22 ... Arm 23: Skirt part 24: Shield part 25 bulge 26 rectifier plate
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−163802（ＪＰ，Ａ) 実開 平３−93103（ＪＰ，Ｕ) 実開 昭62−139601（ＪＰ，Ｕ) 実開 平３−29221（ＪＰ，Ｕ) 実開 昭57−90802（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-163802 (JP, A) JP-A-3-93103 (JP, U) JP-A-62-139601 (JP, U) JP-A-6-139601 29221 (JP, U) Shokai Sho 57-90802 (JP, U)
Claims (2)
全カバーと、前記丸鋸刃による被削材の切断の進行と共
に安全カバー内へと回動するロアガードと、前記丸鋸刃
の前部の切屑発生部を覆う横断面略コ字形のフロントカ
バーと、前記安全カバーに位置調節可能に連結された定
盤とを有する丸鋸刃のカバー構造において、前記フロン
トカバー本体は前記定盤の位置調節の際、前記安全カバ
ーに対してその上下方向に動く部位に連結されており、
前記フロントカバー本体の下部には前記定盤又は前記被
削材に接して前記切屑発生部を覆うスカート部が設けら
れ、前記フロントカバー本体の後部には前記丸鋸刃を挟
んで切屑の後方への飛散を防ぐ遮蔽部が設けられている
ことを特徴とする電気丸鋸における丸鋸刃のカバー構
造。1. A safety cover for covering an upper portion of a circular saw blade in an electric circular saw, a lower guard pivoting into the safety cover with the progress of cutting of a workpiece by the circular saw blade, and a front guard in front of the circular saw blade. In a circular saw blade cover structure having a substantially U-shaped cross-section front cover that covers the chip generation portion of the portion, and a surface plate that is connected to the safety cover so as to be position-adjustable, the front cover main body is formed of the surface plate. At the time of position adjustment, it is connected to a portion that moves up and down with respect to the safety cover,
A skirt portion is provided at a lower portion of the front cover main body to cover the chip generating portion in contact with the surface plate or the work material, and a rear portion of the front cover main body is located behind the chip with the circular saw blade interposed therebetween. A cover structure for a circular saw blade in an electric circular saw, comprising a shielding portion for preventing scattering of the circular saw.
完全収容時における先端位置と前記遮蔽部の上部との間
に介在して切屑を前記安全カバーと前記ロアガードとの
間に向ける整流板が設けられていることを特徴とする請
求項１の電気丸鋸における丸鋸刃のカバー構造。2. A rectifying plate interposed between a tip position of the lower guard when the lower guard is completely housed in the safety cover and an upper portion of the shielding portion to direct chips between the safety cover and the lower guard. The cover structure of a circular saw blade in the electric circular saw according to claim 1, wherein
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991053789U JP2543841Y2 (en) | 1991-07-11 | 1991-07-11 | Cover structure of circular saw blade in electric circular saw |
| US08/062,989 US5537748A (en) | 1991-07-09 | 1993-05-18 | Cover structure for electric circular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991053789U JP2543841Y2 (en) | 1991-07-11 | 1991-07-11 | Cover structure of circular saw blade in electric circular saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH055333U JPH055333U (en) | 1993-01-26 |
| JP2543841Y2 true JP2543841Y2 (en) | 1997-08-13 |
Family
ID=33156477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991053789U Expired - Lifetime JP2543841Y2 (en) | 1991-07-09 | 1991-07-11 | Cover structure of circular saw blade in electric circular saw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2543841Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4715640B2 (en) * | 2006-06-02 | 2011-07-06 | 日立工機株式会社 | Portable circular saw |
| KR101253764B1 (en) * | 2012-10-17 | 2013-04-12 | (주) 금성풍력 | Safety cover and safety cover manufacture for belt of the blower |
| JP6847651B2 (en) * | 2016-09-01 | 2021-03-24 | 株式会社マキタ | Portable cutting machine |
| JP7035335B2 (en) * | 2017-05-01 | 2022-03-15 | マックス株式会社 | Portable cutting machine |
-
1991
- 1991-07-11 JP JP1991053789U patent/JP2543841Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH055333U (en) | 1993-01-26 |
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