JP3238367U

JP3238367U - Tipped saw for mowing

Info

Publication number: JP3238367U
Application number: JP2022001652U
Authority: JP
Inventors: 勝幸井上
Original assignee: 勝幸井上
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-07-20
Anticipated expiration: 2032-05-20

Abstract

【課題】草刈り時の切刃取付け部間への刈り草等の詰まりを防止するとともに切れ味に優れ、草刈りの作業効率を向上させ、刈払い機のエンジンへの負荷を軽減させて、経済的な草刈り用チップソーを提供すること。【解決手段】刈払機への取付け穴が穿設された円板状の台金の外周縁部に、所定間隔で形成された複数の切刃取付け部を有するチップソーにおいて、前記切刃取り付け部は、鋭角の２つの突起が連接し、その外周縁部が略Ｍ字形状を有し、前記突起の稜線である２辺の両側に切刃を備えたことを特徴とする。【選択図】図２[PROBLEMS] To prevent clogging of cut grass or the like between cutting blade mounting portions during mowing, to provide excellent sharpness, to improve work efficiency of mowing, to reduce the load on the engine of the mower, and to be economical. To provide a tipped saw for mowing grass. Kind Code: A1 A chip saw having a plurality of cutting blade mounting portions formed at predetermined intervals on the outer peripheral edge of a disk-shaped base metal having mounting holes for a bush cutter, wherein the cutting blade mounting portions are , two protrusions with an acute angle are connected to each other, the outer peripheral edge thereof has a substantially M-shape, and cutting edges are provided on both sides of the two sides that are the ridge lines of the protrusions. [Selection drawing] Fig. 2

Description

本考案は、雑草、雑木、小竹等の植物を刈り払いする際に使用する草刈り用チップソーに関する。 The present invention relates to a mowing tip saw used when cutting plants such as weeds, weeds, and small bamboo.

これまでの草刈り用チップソーは、円板状の台金の外周縁部に、所定間隔で形成された複数の切刃取付け部が形成され、その先端部に切刃が取り付けられている。このチップソーを刈払い機に取り付けて回転させることにより、雑草等の草刈りを行っている。 In conventional mowing tip saws, a plurality of cutting edge attachment portions formed at predetermined intervals are formed on the outer peripheral edge portion of a disk-shaped base metal, and the cutting edge is attached to the tip portion thereof. Weeds and the like are mowed by attaching this tipped saw to a brush cutter and rotating it.

特開２００５－１５１９５４JP-A-2005-151954 特許第６３４３７３９号Patent No. 6343739

しかしながら、前記特許文献１に記載の従来の草刈り用チップソーによると、多数の切刃取付部にそれぞれ固着された切刃は、草刈り時に切刃が硬い草木や石や金属等に接触して刃の摩耗や損傷が起こり、徐々に草刈りの効果が失われるものであり、切刃が破損した場合には、新規のチップソーと交換するしかなかった。また、草刈りを続けると、隣り合う切刃取付部間の刃室に、刈り取られた草木が挟まって絡み、スムーズな草刈りができなくなる問題があった。さらに、前記特許文献２に記載された草刈り用チップソーによると、切刃取付け部の前傾に固着された切刃と、後傾に形成された鋸刃状の複数の切刃により、草木の絡みを軽減でき、特許文献１に記載の草刈り用チップソーに比べれば、よりスムーズな草刈りを行うことができるのであるが、経時的に鋸刃状の複数の刃の間に切り草が詰まり、両刃切刃の意味を果たさなくなるという問題があった。 However, according to the conventional mowing tip saw described in Patent Document 1, the cutting edge fixed to each of a large number of cutting edge attachment portions comes into contact with hard plants, stones, metals, etc. during mowing. The effect of mowing was gradually lost due to wear and damage, and when the cutting edge was damaged, there was no choice but to replace it with a new tipped saw. Further, when mowing is continued, there is a problem that the mowed vegetation is caught and entangled in the blade chamber between the adjacent cutting blade mounting portions, and smooth mowing cannot be performed. Further, according to the mowing tip saw described in Patent Document 2, the cutting edge fixed to the forward tilt of the cutting edge mounting portion and a plurality of saw blade-shaped cutting blades formed to be tilted backward are entangled with plants. It is possible to mow the grass more smoothly than the tipped saw for mowing described in Patent Document 1, but the cutting grass is clogged between a plurality of saw blades over time, and double-edged cutting is possible. There was a problem that the blade did not serve its meaning.

本考案のチップソーは上記課題を解決するために、刈払機への取付け穴が穿設された円板上の台金の外周縁部に、所定間隔で形成された複数の切刃取付け部を有するチップソーにおいて、前記切刃取付け部は、鋭角の２つの突起が間隙を有して連設し、その外周縁部が略Ｍ字形状を有し、前記突起の稜線である２辺の両側に切刃を備えており、隣り合う前記切刃取付け部の間隔は、前記切刃取付け部の幅より広いことを特徴とする。 In order to solve the above problems, the tip saw of the present invention has a plurality of cutting edge mounting portions formed at predetermined intervals on the outer peripheral edge of the base metal on the disk in which the mounting holes for the mowing machine are bored. In the tip saw, the cutting edge mounting portion is formed by connecting two sharp-angled protrusions with a gap, and the outer peripheral edge thereof has a substantially M-shape, and the cutting edge is cut on both sides of the two sides which are the ridges of the protrusions. The blade is provided, and the distance between the adjacent cutting edge mounting portions is wider than the width of the cutting edge mounting portion.

本考案のチップソーの切刃取り付け部は、鋭角の２つの突起が間隙を有して連設し、その外周縁部がＭ字形状を有し、前記突起の稜線である２辺の両側に切刃を備えたものであるため、４つの切刃により草刈りを行うことができるとともに、切刃間やチップ取り付け部間への刈り草等の詰まりがなくなり、草刈りの作業効率が格段に向上する。なお、前記突起は刃の幅があるため、切る物に当たると捻れや歪みを生じるが、前記間隙により、前記２つの突起が独立刃となるので、草刈り時に互いの刃の干渉を受けにくく、刃の振れが早く収まり、刃切れが良く切れ味も良くなる。 In the cutting edge mounting portion of the tip saw of the present invention, two sharp-angled protrusions are connected in succession with a gap, and the outer peripheral edge portion thereof has an M-shape and is cut on both sides of the two sides which are the ridges of the protrusions. Since it is equipped with blades, it is possible to mow grass with four cutting blades, and there is no clogging of mowing grass between the cutting blades and between the tip attachment portions, so that the work efficiency of mowing is significantly improved. Since the protrusion has a blade width, twisting and distortion occur when it hits an object to be cut. However, since the two protrusions become independent blades due to the gap, they are less likely to interfere with each other when mowing, and the blades. The runout of the blade is settled quickly, and the blade is sharp and sharp.

本考案の草刈り用チップソーの概略平面図である。It is a schematic plan view of the tip saw for mowing of this invention. 本考案の草刈り用チップソーの切刃取付け部の拡大図である。It is an enlarged view of the cutting edge attachment part of the tip saw for mowing of this invention.

図１は本考案の草刈り用チップソーの概略平面図である。図１において、刈払機への取付け穴１が穿設された円板状の台金２の外周部には、複数の切刃取り付け部３が等間隔で形成されている。この切刃取り付け部の形状は、鋭角の２つの山型の突起４、５が連設した略Ｍ字形状を有している。また、切刃取付け部の幅ａと隣り合う前記切刃取付け部の間隔ｂは、ａ＜ｂの関係を有している。 FIG. 1 is a schematic plan view of the mowing tip saw of the present invention. In FIG. 1, a plurality of cutting edge mounting portions 3 are formed at equal intervals on the outer peripheral portion of the disc-shaped base metal 2 in which the mounting holes 1 for the brush cutter are bored. The shape of the cutting edge mounting portion has a substantially M-shape in which two chevron-shaped protrusions 4 and 5 having an acute angle are connected in succession. Further, the width a of the cutting edge mounting portion and the distance b of the cutting edge mounting portion adjacent to the width a have a relationship of a <b.

図２は本考案の草刈り用チップソーの切刃取付け部の拡大図である。図２において、切刃取り付け部の形状は、鋭角の２つの山型の突起４、５が直線状の間隙６を有して連設した略Ｍ字形状を有している。前記各突起の稜線である２辺の両側にそれぞれ切刃を備えている。つまり、前記突起４には、前記突起５側の稜線には切刃４ａが、前記突起５と反対側には切刃４ｂが設けられている。同様に、前記突起５には、前記突起４側の稜線には切刃５ａが、前記突起４と反対側には切刃５ｂが設けられている。そして、切刃４ａが設けられた稜線と、切刃５ａが設けられた稜線とのなす角ｘは約１００°である。また、切刃４ｂ、５ｂが設けられた稜線と台金周縁部とのなす角ｙは約８０°である。 FIG. 2 is an enlarged view of a cutting edge mounting portion of the mowing tip saw of the present invention. In FIG. 2, the shape of the cutting edge mounting portion has a substantially M-shape in which two chevron-shaped protrusions 4 and 5 having an acute angle are connected with a linear gap 6. Cutting edges are provided on both sides of the two sides that are the ridges of the protrusions. That is, the protrusion 4 is provided with a cutting blade 4a on the ridgeline on the side of the protrusion 5 and a cutting blade 4b on the side opposite to the protrusion 5. Similarly, the protrusion 5 is provided with a cutting edge 5a on the ridgeline on the side of the protrusion 4 and a cutting blade 5b on the side opposite to the protrusion 4. The angle x formed by the ridge line provided with the cutting edge 4a and the ridge line provided with the cutting edge 5a is about 100 °. Further, the angle y formed by the ridge line provided with the cutting blades 4b and 5b and the peripheral portion of the base metal is about 80 °.

本考案の草刈り用チップソーは、１つの切刃取付け部に４つの切刃を備えているので、台金の回転方向を随時変えながら使用することにより、スムーズに草を刈ることができるとともに、切刃取付け部間に草が詰まることもなくなり、結果として刈り払い機のエンジンへの負荷も減少する。また、切刃取付け部の幅ａと隣り合う前記切刃取付け部の間隔ｂは、ａ＜ｂの関係を有しているため、隣り合う切刃取付け部間への草の詰まりが低減される。さらに、前記間隙により、前記２つの突起が独立刃となるため、刃の振れが早く収まり、刃切れが良く切れ味も良くなる。 Since the tip saw for mowing of the present invention is provided with four cutting blades in one cutting blade mounting portion, it is possible to mow the grass smoothly and cut the grass by using it while changing the rotation direction of the base metal at any time. There is no grass clogging between the blade mounting parts, and as a result, the load on the engine of the brush cutter is reduced. Further, since the width a of the cutting edge mounting portion and the distance b between the adjacent cutting edge mounting portions have a relationship of a <b, clogging of grass between the adjacent cutting blade mounting portions is reduced. .. Further, since the two protrusions become independent blades due to the gap, the runout of the blades is quickly settled, and the blades are sharp and sharp.

本考案は、台金の切刃取付け部に切刃が固着される実施例に示すようなものに限定されることなく、各種形態のチップソーに適用できる。 The present invention is not limited to the one shown in the embodiment in which the cutting edge is fixed to the cutting edge mounting portion of the base metal, and can be applied to various types of tip saws.

１・・・取付け穴、２・・・台金、３・・・切刃取り付け部、４、５・・・突起、４ａ、４ｂ、５ａ、５ｂ・・・切刃、６・・・間隙
1 ... Mounting hole, 2 ... Base metal, 3 ... Cutting blade mounting part, 4, 5 ... Protrusion, 4a, 4b, 5a, 5b ... Cutting blade, 6 ... Gap

Claims

In a tip saw having a plurality of cutting edge mounting portions formed at predetermined intervals on the outer peripheral edge of a base metal on a disk on which a mounting hole for a brush cutter is bored, the cutting edge mounting portion has a sharp angle of 2. Two protrusions are continuously provided with a gap, the outer peripheral edge portion thereof has a substantially M shape, and cutting blades are provided on both sides of two sides which are the ridgelines of the protrusions, and the cutting edge mounting portions adjacent to each other. A tip saw for mowing, characterized in that the distance between the blades is wider than the width of the cutting edge mounting portion.