JP2005204630A - Double-blade for bush cutter - Google Patents

Double-blade for bush cutter Download PDF

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Publication number
JP2005204630A
JP2005204630A JP2004043642A JP2004043642A JP2005204630A JP 2005204630 A JP2005204630 A JP 2005204630A JP 2004043642 A JP2004043642 A JP 2004043642A JP 2004043642 A JP2004043642 A JP 2004043642A JP 2005204630 A JP2005204630 A JP 2005204630A
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Japan
Prior art keywords
blade
bush cutter
weeds
cut
bush
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JP4035563B2 (en
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Shigekatsu Minagawa
繁勝 皆川
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MINAGAWA NOKI SEIZO KK
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MINAGAWA NOKI SEIZO KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-blade for a bush cutter that can increase the efficiency of bush cutting more than the conventional process by overcoming large drawbacks of the conventional two-blade bush cutter that, even when cut weeds fall down on a disk body of the blade part and come into contact with the blade part formed on its periphery, they cause slippage to twine around a rotary shaft and the cutting operation must be interrupted frequently for removing the entangled weeds, during the cutting work. <P>SOLUTION: In this invention, a plurality of circular arc notches are cut at a proper interval on the straight blade formed on a circumference almost orthogonally crossing the rotation direction of the disk for the two-blade bush cutter. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

発明の詳細な説明Detailed Description of the Invention

本発明は、畑地や土手の雑草を刈払う際に用いる刈払い機用二枚刃に関するものである。  The present invention relates to a two-blade blade for a brush cutter used when weeding a field or a weed on a bank.

従来からある刈払い機用二枚刃で刈払い作業を行うと、該二枚刃盤体の回転方向と略直交する周縁部に設けた直線状刃部のうち、外周縁部の刃により切断され刈払われた雑草は、二枚刃盤体上に倒れ込む。それらは順次切断され倒れ込む雑草により回転軸方向に押され盤体と刈払い機の回転軸ギャケース間に挟まり丈の長い草等は回転軸に絡み巻き付く、回転軸に絡み巻き付いた雑草は回転軸ギャケース上部に抑圧され回転方向と略直交する周縁部に設けた直線状刃部と接触するが引っ掛かりがなく滑ってしまい巻き付いた雑草は振り払われず、しばしば刈払い作業を中断してこれを取り除かなければならなかった。したがって作業効率が著しく損なわれていた。  When cutting with a conventional two-blade blade for a brush cutter, cutting is performed with the blade at the outer peripheral edge of the straight blade provided at the peripheral edge substantially perpendicular to the rotational direction of the two-blade disc body. The weeds that have been pruned fall down on the two-blade body. They are pushed in the direction of the rotation axis by weeds that are sequentially cut and fallen, and are sandwiched between the rotary shaft gear case of the disc body and the brush cutter, and long grass etc. are entangled around the rotation axis, and the weed entangled around the rotation axis is the rotation axis. The weeds that are suppressed in the upper part of the gear case and come into contact with the straight blade provided at the peripheral edge almost perpendicular to the rotation direction, but do not get caught, do not shake off the weeds, often cut off the mowing work and remove it. I had to. Therefore, the work efficiency has been significantly impaired.

発明が解決しようとする課題Problems to be solved by the invention

本発明は、このような従来の二枚刃が持つ欠点を解決することを目的とするものである。  An object of the present invention is to solve the drawbacks of such a conventional two-blade.

課題を解決する為の手段Means to solve the problem

本発明は、二枚刃の盤体において回転方向と略直交する周縁部に形成した直線状の刃部に適当間隔をおいて複数の円弧状切り欠き箇所を設けてなるものである。  According to the present invention, a plurality of arc-shaped cutout portions are provided at appropriate intervals on a linear blade portion formed on a peripheral edge portion substantially orthogonal to the rotation direction in a two-blade disc body.

いま前述した構成の二枚刃を使用して刈払い作業を行うと、二枚刃によって刈払われた雑草は、二枚刃盤体上に倒れこみ順次切断され倒れ込む雑草により回転軸方向におされ盤体と回転軸ギャケース間に挟まり回転軸に絡み巻き付こうとするが、二枚刃盤体に設けた円弧状切り欠き箇所に引っ掛かり、引き回されて切断振り払われることになる。  When cutting with the two blades having the configuration described above, weeds cut by the two blades fall down on the two-blade board body and are sequentially cut and weeded in the direction of the rotation axis. However, it is sandwiched between the disk body and the rotary shaft gear case and entangled with the rotary shaft, but is caught in the arc-shaped cutout portion provided in the two-blade disk body, and is drawn and cut off.

二枚刃盤体１の刃部２ａ・２ｂに円弧状切欠き箇所３ａ・３ｂを設ける。（図１・図２）  Arc-shaped notch portions 3a and 3b are provided in the blade portions 2a and 2b of the two-blade body 1. (Fig. 1 and Fig. 2)

この二枚刃盤体１は、中心部に設けた回転軸を挿入固定する軸孔４を中心として回転する。  The two-blade body 1 rotates around a shaft hole 4 for inserting and fixing a rotation shaft provided at the center.

二枚刃盤体１は、片側の刃部２ａが磨耗して切れ味が低下した時、裏返してもう一方の刃部２ｂを使用する。  When the blade part 2a on one side is worn out and the sharpness is lowered, the two-blade body 1 is turned over and the other blade part 2b is used.

したがって、刃部２ａを使用している場合、雑草の巻き付き防止には円弧状切り欠き箇所３ａが、刃部２ｂを使用する場合は円弧状切り欠き箇所３ｂが作用することになる。  Therefore, when the blade portion 2a is used, the arc-shaped cutout portion 3a acts to prevent weeds from being wound, and when the blade portion 2b is used, the arc-shaped cutout portion 3b acts.

ギャケース６の下部に二枚刃盤体が取り付く回転軸部５がある。７はメインパイプである。（図３）  At the lower part of the gear case 6, there is a rotating shaft part 5 to which the two-blade body is attached. 7 is a main pipe. (Figure 3)

発明の効果The invention's effect

以上の構成からなる本発明の二枚刃は、刈払われた雑草が回転軸に巻き付こうとしても、雑草は円弧状切り欠き箇所に引っ掛かり引き回されて確実に切断振り払われ、従来のように作業を中断する必要が無くなり刈払い作業の能率向上と作業疲労の低減に役立つものとなる。  The two-blade blade of the present invention having the above-described configuration, even if the weeds that have been cut off are about to be wound around the rotating shaft, the weeds are hooked around the arc-shaped cutout portion and reliably cut and swung away. Thus, it is not necessary to interrupt the work, and it is useful for improving the efficiency of the mowing work and reducing the work fatigue.

一実施例の正面図  Front view of one embodiment 図１Ａ−Ａ線の断面図  1A-A sectional view 回転軸部への取り付け状態を示した要部の図  The figure of the principal part which showed the attachment state to a rotating shaft part

符号の説明Explanation of symbols

１ 二枚刃の盤体
２ａ 刃部
２ｂ 刃部
３ａ 円弧状切り欠き箇所
３ｂ 円弧状切り欠き箇所
４ 軸孔
５ 回転軸部
６ ギャケースDESCRIPTION OF SYMBOLS 1 Double blade body 2a Blade part 2b Blade part 3a Arc-shaped notch part 3b Arc-shaped notch part 4 Shaft hole 5 Rotating shaft part 6 Gear case

Claims (1)

刈払い機用二枚刃の盤体において、該盤体中央に回転軸挿入孔を設け、回転方向と略直交する周縁部に形成した直線状刃部に適当間隔を置いて複数の円弧状切り欠き箇所を設けてなることを特徴とする刈払い機用二枚刃。  In a two-blade disc body for a brush cutter, a rotation shaft insertion hole is provided in the center of the disc body, and a plurality of arc-shaped cuttings are provided at appropriate intervals on a linear blade portion formed on the peripheral edge substantially perpendicular to the rotation direction. A two-blade for a brush cutter, characterized by providing a notch.
JP2004043642A 2004-01-20 2004-01-20 Two blades for brush cutter Expired - Fee Related JP4035563B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004043642A JP4035563B2 (en) 2004-01-20 2004-01-20 Two blades for brush cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004043642A JP4035563B2 (en) 2004-01-20 2004-01-20 Two blades for brush cutter

Publications (2)

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JP2005204630A true JP2005204630A (en) 2005-08-04
JP4035563B2 JP4035563B2 (en) 2008-01-23

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Family Applications (1)

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JP2004043642A Expired - Fee Related JP4035563B2 (en) 2004-01-20 2004-01-20 Two blades for brush cutter

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010011844A (en) * 2008-06-06 2010-01-21 Katsunori Oshiro Composite blade for weed cutter
JP2013009612A (en) * 2011-06-28 2013-01-17 Minagawa Noki Seizo Kk Double-blade for bush cutter
KR20180103811A (en) * 2018-09-12 2018-09-19 엘지전자 주식회사 Lawn mower robot
US10716254B2 (en) 2017-01-02 2020-07-21 Lg Electronics Inc. Lawn mower robot
TWI704864B (en) * 2019-09-06 2020-09-21 張啟振 Mower structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010011844A (en) * 2008-06-06 2010-01-21 Katsunori Oshiro Composite blade for weed cutter
JP2013009612A (en) * 2011-06-28 2013-01-17 Minagawa Noki Seizo Kk Double-blade for bush cutter
US10716254B2 (en) 2017-01-02 2020-07-21 Lg Electronics Inc. Lawn mower robot
KR20180103811A (en) * 2018-09-12 2018-09-19 엘지전자 주식회사 Lawn mower robot
KR102072687B1 (en) * 2018-09-12 2020-03-02 엘지전자 주식회사 Lawn mower robot
TWI704864B (en) * 2019-09-06 2020-09-21 張啟振 Mower structure

Also Published As

Publication number Publication date
JP4035563B2 (en) 2008-01-23

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