JP6435450B1 - Mowing tip saw - Google Patents

Mowing tip saw Download PDF

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JP6435450B1
JP6435450B1 JP2018101123A JP2018101123A JP6435450B1 JP 6435450 B1 JP6435450 B1 JP 6435450B1 JP 2018101123 A JP2018101123 A JP 2018101123A JP 2018101123 A JP2018101123 A JP 2018101123A JP 6435450 B1 JP6435450 B1 JP 6435450B1
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tip
saw
blade
tilt
mowing
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JP2019205356A (en
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勝幸 井上
勝幸 井上
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勝幸 井上
勝幸 井上
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Abstract

【課題】草刈り時の雑草等の絡みつき防止と切れ味に優れ、刈払い機のエンジンへの負荷を軽減させるとともに、経済的な草刈り用チップソーを提供すること。【解決手段】複数の山型のチップ取付け部を有し、台金への脱着が可能な替え刃を備えたチップソーであって、前記チップ取付け部の各稜線にはチップと鋸歯が形成され、隣接する前記チップ取付け部の間には、V型の刃室を有する草刈り用チップソーである。【選択図】図1An object of the present invention is to provide an economical mowing tip saw which is excellent in prevention of entanglement of weeds and the like during mowing and is excellent in sharpness, reduces the load on the engine of a brush cutter, and is economical. A tip saw having a plurality of chevron-shaped tip mounting portions and having a replacement blade that can be attached to and detached from a base metal, and a tip and a saw tooth are formed on each ridge line of the tip mounting portion, A mowing tip saw having a V-shaped blade chamber between adjacent tip attaching portions. [Selection] Figure 1

Description

本発明は、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 cutting saw for use in cutting grass such as weeds, weeds, and small bamboos.

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、所定間隔で複数のチップ取付け部が形成され、その先端部にチップ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 cutting saws, a plurality of chip attachment portions are formed at predetermined intervals on the outer peripheral edge of a disk-shaped base metal, and the tips are attached to the tip portions thereof. The tip saw is attached to a brush cutter and rotated to mow weeds and the like.

特開2005−151954JP 2005-151954 A

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、多数のチップ取付部にそれぞれ固着されたチップは、草刈り時にチップ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、一部のチップが破損した場合でも、新規のチップソーとまるごと交換するしかなかった。また、草刈りを続けると、隣り合うチップ取付部間の刃室に、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。 However, according to the conventional mowing tip saw described in Patent Document 1, the tips fixed to a large number of tip mounting portions each come into contact with hard plants, stones, metal, or the like when cutting, and the blades are worn or damaged. The effect of mowing was gradually lost, and even when some chips were damaged, the entire chip saw had to be replaced. Further, if the mowing is continued, there is a problem that the mowing vegetation is caught in the blade chamber between the adjacent chip mounting portions, and smooth mowing cannot be performed.

上記課題を解決するために、本発明のチップソーは、刈払機への取付け穴が穿設された円板状の台金と、該台金の外周縁側に脱着可能に取り付けられる複数のチップ取付け部を有する円環状の替え刃とを備えたチップソーにおいて、前記チップ取付け部は直線状の前傾と直線状の後傾を稜線とする山型に形成され、前記前傾と前記後傾が交わる前記チップ取付け部の前記前傾側には、前記前傾の長さの1/2以上にチップが固着され、前記後傾側には、前記後傾の長さの1/2以上に鋸歯状の複数の歯が形成され、隣接する前記チップ取付け部の間には、直線状の前記後傾と直線状の前記前傾により形成される刃室を有することを特徴とする。 In order to solve the above-described problems, a tip saw of the present invention includes a disc-shaped base metal in which a mounting hole for a brush cutter is drilled, and a plurality of chip mounting portions that are detachably attached to the outer peripheral side of the base metal. The tip mounting portion is formed in a mountain shape having a ridge line with a linear forward inclination and a linear backward inclination, and the forward inclination and the backward inclination intersect with each other. A tip is fixed to ½ or more of the forward tilt length on the forward tilt side of the tip mounting portion, and a plurality of sawtooth-shaped multiples of ½ or more of the rear tilt length is attached to the rear tilt side. A tooth chamber is formed, and a blade chamber is formed between the adjacent tip mounting portions by the linear rearward inclination and the linear forward inclination.

さらに本発明のチップソーは、前記替え刃が、前記台金の外周縁部で円弧状に複数に分割され、分割された各替え刃が接合して円環状に形成されるとともに、分割された各替え刃は複数のチップ取付け部を有することを特徴とする。 Furthermore, in the tip saw of the present invention, the replacement blade is divided into a plurality of arcs at the outer peripheral edge of the base metal, and each of the divided replacement blades is joined to form an annular shape, and each divided blade The replacement blade has a plurality of chip mounting portions.

本発明のチップソーによれば、チップ取付け部の前傾に固着されたチップと、後傾に形成された鋸刃状の複数の刃により、草木の絡みを軽減でき、常にスムーズな草刈りを行うことができるとともに、一部の刃が破損した場合には、その部分の替え刃のみを交換すればよいので、従来のチップソーに比べ経済的であり、草刈りの作業効率も格段に向上する。 According to the tip saw of the present invention, entanglement of plants can be reduced by a tip fixed to the tip attaching portion forwardly and a plurality of saw blade-like blades formed backwardly, and smooth mowing is always performed. In addition, when a part of the blade is damaged, it is only necessary to replace the replacement blade of the part, so that it is more economical than a conventional tip saw and the working efficiency of mowing is greatly improved.

本発明の草刈り用チップソーの平面図である。1 is a plan view of a mowing tip saw of the present invention. 本発明の草刈り用チップソーのチップ取付け部の拡大図である。It is an enlarged view of the chip | tip attachment part of the chip saw for mowing of this invention. 本発明の草刈り用チップソーの替え刃の平面図である。It is a top view of the spare blade of the cutting saw for mowing of the present invention. 本発明の草刈り用チップソーの替え刃を覆うカバーの平面図である。It is a top view of the cover which covers the replacement blade of the cutting saw of the present invention.

図1は本発明の草刈り用チップソーの平面図である。図1において、刈払機への取付け穴4aが穿設された円板状の台金4の外周部3には、等間隔に複数の山型のチップ取付け部10が設けられ、該チップ取付け部10の二つの稜線部には異なる刃が形成された円環状の替え刃11がボルト12により取り付けられている。また、替え刃11の上側には、円環状のカバー13が前記ボルト12で一緒に固定されている。円環状の替え刃11は4つの円弧状の替え刃に分割されており、円環状のカバー13も4つの円弧状のカバーに分割されている。 FIG. 1 is a plan view of the cutting saw of the present invention. In FIG. 1, a plurality of chevron-shaped chip mounting portions 10 are provided at equal intervals on the outer peripheral portion 3 of a disk-shaped base metal 4 in which a mounting hole 4 a to a brush cutter is drilled. An annular replacement blade 11 in which different blades are formed is attached to the two ridge lines 10 by bolts 12. An annular cover 13 is fixed together with the bolts 12 on the upper side of the replacement blade 11. The annular replacement blade 11 is divided into four arc-shaped replacement blades, and the annular cover 13 is also divided into four arc-shaped covers.

図2は本発明の草刈り用チップソーのチップ取付け部の拡大図である。図2において、台金4の外周縁部3に設けられたチップ取付け部10の2つの稜線のうちの前傾、つまり、外周縁部3と稜線とが鋭角をなす側には、その先端部に超合金のチップ2が固着されている。また、チップ取付け部10の2つの稜線のうちの後傾、つまり、外周縁部3と稜線とが鈍角をなす側には、鋸刃1が形成されている。 FIG. 2 is an enlarged view of the tip mounting portion of the mowing tip saw of the present invention. In FIG. 2, the tip of the tip of the tip mounting portion 10 provided on the outer peripheral edge 3 of the base metal 4 is inclined forward, that is, on the side where the outer peripheral edge 3 and the ridge line form an acute angle. A superalloy chip 2 is fixed to the surface. In addition, the saw blade 1 is formed on the rearward inclination of the two ridge lines of the chip mounting portion 10, that is, on the side where the outer peripheral edge 3 and the ridge line form an obtuse angle.

なお、チップ2及び鋸刃1の取付け長さは、各々チップ取付け部10の前傾6及び後傾7の1/2以上とする。また、前傾と後傾とが交わる刃先8を頂点とする角度は約35度としている。 The attachment length of the tip 2 and the saw blade 1 is 1/2 or more of the forward tilt 6 and the backward tilt 7 of the tip mounting portion 10, respectively. Further, the angle with the cutting edge 8 where the forward inclination and the backward inclination intersect with each other as a vertex is about 35 degrees.

本発明の草刈り用チップソーは、チップ取付け部10の前傾6及び後傾7の両方に刃が形成されているので、一方の刃が損傷した際には台金4を裏返して使用したり、回転方向5を変えて使用すれば、損傷していない刃を使用することができる。また、後傾7に設けられた鋸刃1で草刈りを行う場合には、草刈り対象物に鋸刃1が鈍角的に当接するため、よりスムーズな切れ味が得られるとともに、V型の刃室9への草溜まりも軽減でき、刈り払い機のエンジンへの負荷も減少する。 The cutting saw of the present invention has blades formed on both the forward tilt 6 and the rear tilt 7 of the tip mounting portion 10, so when one of the blades is damaged, the base metal 4 is turned over and used, If the rotation direction 5 is changed, an undamaged blade can be used. Further, when mowing with the saw blade 1 provided at the rearward inclination 7, the saw blade 1 abuts obtusely on the mowing object, so that a smoother sharpness is obtained and a V-shaped blade chamber 9 is obtained. This reduces the amount of grass that accumulates on the mower and reduces the load on the mower engine.

図3は本発明の草刈り用チップソーの替え刃11の平面図である。本実施例では、4分割された円弧状の替え刃11a、11b、11c及び11dが円環状に連接されて替え刃11を形成している。分割された各替え刃には4つのチップ取付け部10が設けられており、各チップ取付け部10には、図2で説明したようなチップ2と鋸刃1が形成されている。また台金4にボルトで取り付け固定するための取付け穴14が設けられている。上記によれば、一部の歯が損傷した場合には、その歯を有する替え刃のみを交換することができるので、極めて経済的である。 FIG. 3 is a plan view of the replacement blade 11 of the cutting saw of the present invention. In this embodiment, the arcuate spare blades 11a, 11b, 11c and 11d divided into four parts are connected in an annular shape to form the spare blade 11. Each of the divided replacement blades is provided with four tip mounting portions 10, and the tip 2 and the saw blade 1 as described with reference to FIG. 2 are formed in each tip mounting portion 10. An attachment hole 14 is provided in the base metal 4 for fixing with a bolt. According to the above, when some of the teeth are damaged, only the replacement blade having the teeth can be replaced, which is extremely economical.

図4は、替え刃11を覆うように前記ボルト12で台金4に替え刃11と一緒に固定されているカバー13の平面図である。カバー13にはボルト12が貫通する穴15が設けられている。本実施例では、カバー13も替え刃11と同様に円弧状に4分割されているが、分割された各カバーは2つの隣接する替え刃の接合部がカバーの中央部に重なるように取り付けられている。 FIG. 4 is a plan view of the cover 13 fixed to the base metal 4 together with the replacement blade 11 with the bolt 12 so as to cover the replacement blade 11. The cover 13 is provided with a hole 15 through which the bolt 12 passes. In this embodiment, the cover 13 is also divided into four arcs similarly to the replacement blade 11, but each divided cover is attached so that the joint portion of two adjacent replacement blades overlaps the central portion of the cover. ing.

本発明は、台金のチップ取付け部にチップ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 chip is fixed to the chip mounting portion of the base metal, and can be applied to various types of chip saws.

1 鋸刃
2 チップ
3 外周縁部
4 台金
5 回転方向
6 前傾
7 後傾
8 刃先部
9 刃室
10 チップ取付け部
11、11a、11b、11c、11d 替え刃
12 ボルト
13 カバー
14 取付け穴
15 穴
DESCRIPTION OF SYMBOLS 1 Saw blade 2 Tip 3 Outer peripheral edge part 4 Base metal 5 Rotation direction 6 Forward tilt 7 Back tilt 8 Blade edge part 9 Blade chamber 10 Tip mounting part 11, 11a, 11b, 11c, 11d Replacement blade 12 Bolt 13 Cover 14 Mounting hole 15 hole

Claims (2)

刈払機への取付け穴が穿設された円板状の台金と、該台金の外周縁部に脱着可能に取り付けられる複数のチップ取付け部を有する円環状の替え刃とを備えたチップソーにおいて、前記チップ取付け部は直線状の前傾と直線状の後傾を稜線とする山型に形成され、前記前傾と前記後傾が交わる前記チップ取付け部の前記前傾側には、前記前傾の長さの1/2以上にチップが固着され、前記後傾側には、前記後傾の長さの1/2以上に鋸歯状の複数の歯が形成され、隣接する前記チップ取付け部の間には、直線状の前記後傾と直線状の前記前傾により形成される刃室を有することを特徴とする草刈り用チップソー。 In a tip saw provided with a disk-shaped base metal having a mounting hole for a brush cutter and an annular replacement blade having a plurality of chip mounting parts detachably attached to the outer peripheral edge of the base metal The tip mounting portion is formed in a mountain shape having a ridge line with a straight forward tilt and a straight backward tilt, and the forward tilt side of the tip mounting portion where the forward tilt and the rear tilt intersect is formed with the forward tilt. A chip is fixed to ½ or more of the length of the chip, and a plurality of serrated teeth are formed on the backward tilt side to have ½ or more of the backward tilt length between adjacent chip mounting portions. The blade saw for cutting is characterized by having a blade chamber formed by the linear backward inclination and the linear forward inclination. 前記替え刃は、前記台金の外周縁部で円弧状に複数に分割され、分割された各替え刃が接合して円環状に形成されるとともに、分割された各替え刃は複数のチップ取付け部を有することを特徴とする請求項1に記載の草刈り用チップソー。
The replacement blade is divided into a plurality of arcs at the outer peripheral edge of the base metal, and the divided replacement blades are joined to form an annular shape, and each of the divided replacement blades is attached to a plurality of chips. The cutting saw for mowing according to claim 1, further comprising a portion.
JP2018101123A 2018-05-28 2018-05-28 Mowing tip saw Active JP6435450B1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5464727U (en) * 1977-10-17 1979-05-08
JPS56164710A (en) * 1980-05-21 1981-12-17 Toshio Aono Centrifugal rotary blade
US4527382A (en) * 1983-08-02 1985-07-09 Toshio Aono Mowing rotary sawtoothed cutter
JPH0432894A (en) * 1990-05-29 1992-02-04 Hitachi Ltd Image display device
JP2010142198A (en) * 2008-12-22 2010-07-01 Kinzo Noko Kogyo Kk Circular saw for mowing
JP3217662U (en) * 2018-06-13 2018-08-23 三陽金属株式会社 Rotary blade for weeding

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5464727U (en) * 1977-10-17 1979-05-08
JPS56164710A (en) * 1980-05-21 1981-12-17 Toshio Aono Centrifugal rotary blade
US4527382A (en) * 1983-08-02 1985-07-09 Toshio Aono Mowing rotary sawtoothed cutter
JPH0432894A (en) * 1990-05-29 1992-02-04 Hitachi Ltd Image display device
JP2010142198A (en) * 2008-12-22 2010-07-01 Kinzo Noko Kogyo Kk Circular saw for mowing
JP3217662U (en) * 2018-06-13 2018-08-23 三陽金属株式会社 Rotary blade for weeding

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