JP7019196B2 - Rotary blade for brush cutter - Google Patents
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特許法第３０条第２項適用 日 時 ：平成２８年１０月１２日 展示会名：第６回 国際道工具・作業用品ＥＸＰＯ 場 所 ：幕張メッセ国際展示場（千葉県千葉市美浜区）Date of application of Article 30,
本発明は、刈払機に装着する金属製の回転刃に関する。 The present invention relates to a metal rotary blade mounted on a brush cutter.
一般的な刈払機は、作業者が刈払機本体に取り付けられたベルトを肩にかけて、竿状のハンドル付操作軸の先端に装着された回転刃が地面に沿って左右に移動するようにハンドルを動かすことで、草等が刈り取られる仕組みになっている。
このような作業形態から、刈払機先端の回転刃の重量は、作業時の身体にかかる負荷に影響を及ぼす。
In a general brush cutter, the operator puts the belt attached to the brush cutter on his shoulder, and the handle is moved so that the rotary blade attached to the tip of the operation shaft with a rod-shaped handle moves left and right along the ground. By moving it, grass etc. are cut.
From such a work mode, the weight of the rotary blade at the tip of the brush cutter affects the load applied to the body during work.
そこで、回転刃の軽量化のために実用新案登録第３１２４２２０号広報（以下「特許文献１」という。）に円板状の本体に孔を設けたものが提案されている。
しかし、特許文献１のような円形の孔では、孔と孔とを近接させることができず、軽量化には限界があった。
また、残った部分が傘の骨のような形状になるように孔を設けることもできるが、回転刃の強度が使用に耐えず実用的ではない。
Therefore, in order to reduce the weight of the rotary blade, a utility model registration No. 3124220 public relations (hereinafter referred to as "
However, in the case of a circular hole as in
Further, although it is possible to provide a hole so that the remaining portion has a shape like the bone of an umbrella, the strength of the rotary blade is not practical because it cannot withstand use.
そこで、本発明は、使用に耐える強度を確保しながら、より軽量化された刈払機用の回転刃を提供することを課題とする。 Therefore, it is an object of the present invention to provide a lighter rotary blade for a brush cutter while ensuring strength to withstand use.
この課題を解決するための本発明は、回転刃の取付孔から刃部の間に強度を確保できる形態で連続する複数の軽量孔を設けたことを特徴とする。 The present invention for solving this problem is characterized in that a plurality of continuous lightweight holes are provided between the mounting holes of the rotary blade and the blade portion in a form capable of ensuring strength.
すなわち、第一の本発明に係る刈払機用の回転刃は、金属板で形成された円板状の台金と、台金の中心に形成された刈払機の回転軸への取付孔を有する中心部と、台金の外周縁に連続して形成された刃部と、中心部から刃部の間に形成された複数の軽量孔を有する孔部とを備え、複数の軽量孔の形状が平面充填可能な多角形であり、複数の軽量孔が、複数の軽量孔の外周の台金のみを網目状に残す形態で隙間なく連続して孔部に設けられていることを特徴とする刈払機用回転刃である。 That is, the rotary blade for the mowing machine according to the first invention has a disk-shaped base metal formed of a metal plate and a mounting hole for the rotating shaft of the mowing machine formed in the center of the base metal. It has a central portion, a blade portion continuously formed on the outer peripheral edge of the base metal, and a hole portion having a plurality of lightweight holes formed between the central portion and the blade portion, and the shape of the plurality of lightweight holes can be formed. It is a polygon that can be filled in a plane, and is characterized in that a plurality of lightweight holes are continuously provided in the holes without gaps in a form in which only the base metal on the outer periphery of the plurality of lightweight holes is left in a mesh shape. It is a rotary blade for a payer.
平面充填とは、平面を隙間なく敷き詰めることをいい、全て同じ形状で平面充填が可能な多角形は三角形、四角形、六角形の３つである。
この３つの多角形の軽量孔であれば、軽量孔の外周のみを網目状に残す形態で連続して複数の軽量孔を設けることができる。
この中でも軽量孔の形状としては三角形と六角形が好ましい。三角形と六角形は外力に対しての強度があるからである。
Tessellation means that planes are spread without gaps, and there are three polygons that can be tessellated with the same shape: triangle, quadrangle, and hexagon.
With these three polygonal lightweight holes, a plurality of lightweight holes can be continuously provided in a form in which only the outer periphery of the lightweight holes is left in a mesh pattern.
Of these, triangles and hexagons are preferable as the shapes of the lightweight holes. This is because triangles and hexagons are strong against external forces.
そして第二の本発明に係る刈払機用の回転刃は、第一の本発明における平面充填可能な多角形の形状が正六角形であることを特徴とする。 The rotary blade for a brush cutter according to the second invention is characterized in that the shape of the polygon that can be tessellated in the first invention is a regular hexagon.
板状である刈払機用の回転刃の台金に、平面充填可能な多角形の形状をした軽量孔を開ければ、強度を大きく損なわずに軽量化を実現することができる。そして軽量孔の数を増やしていけば最終的には軽量孔の周囲を形成するだけの台金による枠構造が残る。
このとき軽量孔を小さくすれば強度は増すが、単位面積当たりの台金の量は増える。そこで軽量孔の面積を一定にして最も台金の量が少なくなる軽量孔の開け方、つまり同じ面積の図形による平面充填で軽量孔の周位の長さが最も短くなる図形は何かを考えると、その図形は正六角形になる。
If a lightweight hole having a polygonal shape that can be tessellated is formed in the base metal of the rotary blade for a plate-shaped brush cutter, the weight can be reduced without significantly impairing the strength. If the number of lightweight holes is increased, a frame structure with a base metal that only forms the periphery of the lightweight holes will eventually remain.
At this time, if the lightweight holes are made smaller, the strength is increased, but the amount of the base metal per unit area is increased. Therefore, consider how to make a lightweight hole that minimizes the amount of base metal by keeping the area of the lightweight hole constant, that is, what is the figure that makes the circumference of the lightweight hole the shortest by tessellation with a figure of the same area. And the figure becomes a regular hexagon.
このように、同じ面積の軽量孔を回転刃の台金に連続して設ける場合には、その軽量孔の形状を正六角形とすることで最も軽量化できることが分かる。
さらに正六角形は平面充填が可能であることに加えて、ある方向から力が加わった際には、その衝撃が他の５辺に分散して伝わるという特質を持っている。
この特質により回転刃の強度を確保しながら、軽量化と衝撃吸収力の向上が可能となる。
As described above, when lightweight holes having the same area are continuously provided on the base metal of the rotary blade, it can be seen that the weight can be reduced most by making the shape of the lightweight holes a regular hexagon.
Furthermore, in addition to being able to tessellate, the regular hexagon has the characteristic that when a force is applied from one direction, the impact is dispersed and transmitted to the other five sides.
This characteristic makes it possible to reduce the weight and improve the shock absorption capacity while ensuring the strength of the rotary blade.
さらに第三の本発明に係る刈払機用の回転刃は、第一又は第二の本発明に係る回転刃において、回転刃の外接円の面積に対する複数の軽量孔の総面積の割合が２０％～３５％であることを特徴する。 Further, in the rotary blade for the mowing machine according to the third invention, in the rotary blade according to the first or second invention, the ratio of the total area of the plurality of lightweight holes to the area of the circumscribed circle of the rotary blade is 20%. It is characterized by being ~ 35%.
軽量孔とそれに隣接する軽量孔との間の台金が形成する枠構造の幅を同一にすれば、軽量孔を小さくすればするほど回転刃の強度は増すが、残った台金による枠構造の総重量は増える。
逆に軽量孔を大きくすればするほど残った台金による枠構造の総重量は減少するが、回転刃の強度は減少する。
すなわち、平面充填可能な形状の軽量孔を連続して設ける本発明においては、軽量孔の総面積が回転刃の総重量と強度に影響を与えることになる。
If the width of the frame structure formed by the base metal between the lightweight hole and the adjacent lightweight hole is the same, the strength of the rotary blade increases as the lightweight hole becomes smaller, but the frame structure due to the remaining base metal. Total weight increases.
On the contrary, as the lightweight hole is made larger, the total weight of the frame structure due to the remaining base metal decreases, but the strength of the rotary blade decreases.
That is, in the present invention in which lightweight holes having a shape that can be tessellated are continuously provided, the total area of the lightweight holes affects the total weight and strength of the rotary blade.
ところで本発明においては、軽量孔の形状が平面充填可能な多角形であるから、軽量孔の大きさを変えることで容易に軽量孔の総面積を設定することができる。
そこで種々実験の結果、複数の軽量孔の総面積が回転刃の外接円の面積の２０％～３５％になるように設定すれば 使用に耐える強度を維持しながら、軽量孔のない回転刃に比べて最大３０％の軽量化を実現できることが分かった。
By the way, in the present invention, since the shape of the lightweight hole is a polygon that can be tessellated, the total area of the lightweight hole can be easily set by changing the size of the lightweight hole.
Therefore, as a result of various experiments, if the total area of multiple lightweight holes is set to be 20% to 35% of the area of the circumscribed circle of the rotary blade, the rotary blade without lightweight holes can be used while maintaining the strength to withstand use. It was found that the weight can be reduced by up to 30%.
本発明の回転刃は、台金に平面充填可能な形状の軽量孔を平面充填する態様にて連続して設けられているため、強度を維持しながら、軽量化を図ることができる。 Since the rotary blade of the present invention is continuously provided in the base metal in a manner of tessellating lightweight holes having a shape that allows tessellation, it is possible to reduce the weight while maintaining the strength.
また、軽量孔の形状を正六角形とすることで、衝撃吸収力が増し、作業中に回転刃を石やコンクリート、金属に当ててしまった時の甲高い嫌な衝撃音が低減されると共に刃先の長寿命化が可能となる。 In addition, by making the shape of the lightweight hole a regular hexagon, the impact absorption capacity is increased, and the high-pitched and unpleasant impact noise when the rotary blade is hit against stone, concrete, or metal during work is reduced and the cutting edge It is possible to extend the service life.
本発明の回転刃は、一般的な刈払機用回転刃の中心部と刃部の間に平面充填する形態で複数の軽量孔を連続して設けたものである。軽量孔が平面充填する形態で連続して設けられるため、軽量孔の周囲には網目状の台金が残る。 In the rotary blade of the present invention, a plurality of lightweight holes are continuously provided in a form of tessellating between the central portion and the blade portion of a general rotary blade for a brush cutter. Since the lightweight holes are continuously provided in a form of tessellation, a mesh-like base metal remains around the lightweight holes.
以下に本発明の実施例を説明する。 Examples of the present invention will be described below.
本発明の第一の実施例（以下「実施例１」という。）を説明する。図１および図２は実施例１の平面図と側面図である。 The first embodiment of the present invention (hereinafter referred to as "Example 1") will be described. 1 and 2 are a plan view and a side view of the first embodiment.
図1に示すように、回転刃２は金属板で形成された円板状の形状を有し、中心部１０とその外側の孔部１２と、さらにその外側の刃部１４とで構成されている。刃部１４にはチップ８が装着されている。回転刃２の直径は２５５ｍｍである。
中心部１０は所定の厚さ（１．２５ｍｍ）で平坦に形成され中心に刈払機の回転軸に装着するための直径２５．４ｍｍの取付孔６を有する。
As shown in FIG. 1, the
The
そして取付孔６の周囲には複数の正六角形の軽量孔１６が設けられた蜂の巣状の形態を有する孔部１２が形成されている。軽量孔１６は対向する辺の間隔が７ｍｍの正六角形の形状をしており、平面充填をする形態で３７８個設けられ、全て台金４を貫通している。
A honeycomb-shaped hole portion 12 having a plurality of regular
図３は既存の回転刃（以下「比較例１」という。）の平面図である。実施例1との違いは軽量孔の有無のみである。
そして図４は他の既存の回転刃（以下「比較例２」という。）の平面図である。
比較例２には、中心から外縁に向かって順番に直径５ｍｍが３０個、直径５．５ｍｍが３０個、直径６．０ｍｍが３０個、直径６．５ｍｍが３０個、直径７．０ｍｍが３０個、直径７．５ｍｍが３０個、直径８．０ｍｍが６０個、直径８．５ｍｍが３０個の合計２７０個の軽量孔が設けられている。
FIG. 3 is a plan view of an existing rotary blade (hereinafter referred to as “Comparative Example 1”). The only difference from Example 1 is the presence or absence of lightweight holes.
FIG. 4 is a plan view of another existing rotary blade (hereinafter referred to as "Comparative Example 2").
In Comparative Example 2, 30 pieces have a diameter of 5 mm, 30 pieces have a diameter of 5.5 mm, 30 pieces have a diameter of 6.0 mm, 30 pieces have a diameter of 6.5 mm, and 30 pieces have a diameter of 7.0 mm in order from the center to the outer edge. There are 30 lightweight holes with a diameter of 7.5 mm, 60 with a diameter of 8.0 mm, and 30 with a diameter of 8.5 mm, for a total of 270 lightweight holes.
「実験１」
ここで、実施例1及び比較例１並びに比較例２の回転刃を用いて衝撃試験を行い、そのときの衝撃音を比較した。
衝撃試験の方法は「刈払機用超硬刈刃の衝撃試験方法（日農工規格：０００４－２００Ｘ）」に準じて所定の速度で回転させた回転刃をコンクリートブロックに当てる方法で行った。回転刃をコンクリートブロックに当てるときの荷重は５Kｇｆである。
３つの回転刃について、同じ試験を５０回実施して測定した衝撃音の平均値は、実施例１が１２４．８ｄＢ、比較例２が１２７．６ｄＢ、比較例１が１２８．９ｄＢであった。
実施例1が比較例1と比べて４．１ｄＢ、比較例２と比べて２．８ｄＢ低い衝撃音になっていることから、六角形の網目状の孔部の構造により、衝撃吸収力に優れていることが証明された。
"
Here, an impact test was performed using the rotary blades of Example 1, Comparative Example 1, and Comparative Example 2, and the impact sounds at that time were compared.
The impact test method was performed by applying a rotary blade rotated at a predetermined speed to a concrete block according to the "impact test method for a carbide cutting blade for a brush cutter (Nippon Agricultural Co., Ltd. standard: 0004-200X)". The load when the rotary blade is applied to the concrete block is 5 kgf.
The average value of the impact sound measured by performing the same test 50 times for the three rotary blades was 124.8 dB in Example 1, 127.6 dB in Comparative Example 2, and 128.9 dB in Comparative Example 1.
Since Example 1 has an impact sound 4.1 dB lower than that of Comparative Example 1 and 2.8 dB lower than that of Comparative Example 2, the hexagonal mesh-like hole structure has excellent impact absorption. It was proved that.
実施例1が衝撃吸収力に優れているという特質は、使用に際して回転刃が石やコンクリートに当たったときのいやな衝撃音を小さくできるばかりでなく、異物への接触による刃先の劣化やチップの脱落も防止できるという効果を発揮する。 The characteristic that Example 1 has excellent impact absorption is that not only can the unpleasant impact noise when the rotary blade hits stone or concrete during use be reduced, but also the deterioration of the cutting edge due to contact with foreign matter and the tip It has the effect of preventing it from falling off.
「実験２」
次に実施例１及び比較例１並びに比較例２を対象に、回転刃の直径方向の荷重試験を行った。
回転刃の直径方向に１０００Ｎの荷重を与えた場合の最大変位量は、実施例1が１５．７４ｍｍ、比較例２が７．６９ｍｍ、比較例１が０．３９ｍｍであった。
そして、どの回転刃もこの実験では座屈せず、荷重を開放すると元の形状に復帰した。
"
Next, a load test in the diameter direction of the rotary blade was performed on Example 1, Comparative Example 1 and Comparative Example 2.
When a load of 1000 N was applied in the diameter direction of the rotary blade, the maximum displacement amount was 15.74 mm in Example 1, 7.69 mm in Comparative Example 2, and 0.39 mm in Comparative Example 1.
None of the rotary blades buckled in this experiment and returned to their original shape when the load was released.
「実験３」
次に、同じ回転刃を対象にして、５ｍｍの変位が生じるときの回転刃の直径方向に加えた荷重を測定した。
結果は、実施例1が６５０．５Ｎ、比較例２が７９８．８Ｎ、比較例１が１０００Ｎ以上となった。これより実施例1が小さな力でよくたわむということが分かった。
"Experiment 3"
Next, for the same rotary blade, the load applied in the diameter direction of the rotary blade when a displacement of 5 mm occurs was measured.
The results were 650.5N for Example 1, 798.8N for Comparative Example 2, and 1000N or more for Comparative Example 1. From this, it was found that Example 1 flexes well with a small force.
「回転刃の総重量の比較」
図５～図６は本発明の実施例１と比較例３の総重量計算の説明図である。
最初に図５と図６を参照して総重量を比較する。
図５は実施例1を示すが、実施例1は対辺の間隔が７ｍｍの正六角形の軽量孔が３７８個平面充填された回転刃である。一方図６は直径７ｍｍの円形の軽量孔が３７８個設けられた回転刃（以下「比較例３」という。）である。
図５、６のとおり実施例1は総重量３３９ｇであり、比較例３は総重量３５４ｇである。軽量孔を有さない比較例１の総重量は４９６ｇであるから、実施例1は軽量孔を有さない従来の回転刃に比べて３２％の軽量化が実現されている。
また、正六角形の軽量孔の方が、円形の軽量孔よりも軽量化に優れることが分かる。
"Comparison of total weight of rotary blades"
5 to 6 are explanatory views of total weight calculation of Example 1 and Comparative Example 3 of the present invention.
First, the total weights are compared with reference to FIGS. 5 and 6.
FIG. 5 shows Example 1. Example 1 is a rotary blade in which 378 regular hexagonal lightweight holes having a spacing of 7 mm on opposite sides are tessellated. On the other hand, FIG. 6 is a rotary blade provided with 378 circular lightweight holes having a diameter of 7 mm (hereinafter referred to as “Comparative Example 3”).
As shown in FIGS. 5 and 6, Example 1 has a total weight of 339 g, and Comparative Example 3 has a total weight of 354 g. Since the total weight of Comparative Example 1 having no lightweight hole is 496 g, the weight of Example 1 is reduced by 32% as compared with the conventional rotary blade having no lightweight hole.
Further, it can be seen that the regular hexagonal lightweight hole is superior to the circular lightweight hole in weight reduction.
本発明は、円板状の台金の外周縁にチップが装着された回転刃（チップソー）に限らず、刃先が台金に一体的に形成された回転刃を含む草木等の刈払いに使用される全ての回転刃に利用できる。 The present invention is not limited to a rotary blade (tip saw) in which a tip is mounted on the outer peripheral edge of a disk-shaped base metal, but is used for cutting vegetation and the like including a rotary blade whose cutting edge is integrally formed with the base metal. It can be used for all rotary blades.
２ 回転刃
４ 台金
６ 取付孔
８ チップ
１０ 中心部
１２ 孔部
１４ 刃部
１６ 軽量孔
2 rotary blade 4
8 Tip 10 Center 12
Claims (3)
前記台金の中心に形成された刈払機の回転軸への取付孔を有する中心部と、
前記台金の外周縁に連続して形成された刃部と、
前記中心部から前記刃部の間に形成された複数の軽量孔を有する孔部とを備え、
前記複数の軽量孔の形状が平面充填可能な多角形であり、
前記複数の軽量孔が、前記複数の軽量孔の外周の台金のみを網目状に残す形態
で隙間なく連続して前記孔部に設けられていること
を特徴とする刈払機用回転刃。 A disk-shaped base metal made of a metal plate and
A central portion having a mounting hole for the rotary shaft of the brush cutter formed in the center of the base metal, and a central portion.
A blade portion continuously formed on the outer peripheral edge of the base metal and
It is provided with a hole having a plurality of lightweight holes formed between the center and the blade.
The shape of the plurality of lightweight holes is a polygon that can be tessellated.
A form in which the plurality of lightweight holes leave only the base metal on the outer circumference of the plurality of lightweight holes in a mesh pattern.
It must be continuously provided in the hole without any gap.
A rotary blade for brush cutters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019153260A JP7019196B2 (en) | 2019-08-23 | 2019-08-23 | Rotary blade for brush cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019153260A JP7019196B2 (en) | 2019-08-23 | 2019-08-23 | Rotary blade for brush cutter |
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| JP2016005271U Continuation JP3208462U (en) | 2016-11-01 | 2016-11-01 | Brush blade for brush cutter |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3124220U (en) | 2006-05-30 | 2006-08-10 | 金蔵鋸工業株式会社 | Brush cutter blade |
| JP2009183241A (en) | 2008-02-08 | 2009-08-20 | Fuji Heavy Ind Ltd | Cutter blade and bush cutter |
| JP2011160693A (en) | 2010-02-08 | 2011-08-25 | Teruyoshi Chikamatsu | Chip saw with replaceable blade |
| JP2012211010A (en) | 2011-03-31 | 2012-11-01 | Japan Vilene Co Ltd | Granular material supply device |
| JP3181616U (en) | 2012-12-04 | 2013-02-14 | 豊 粟野 | Chip saw for brush cutter |
| JP2014147362A (en) | 2013-02-01 | 2014-08-21 | Sunaga Seisakusho:Kk | Grass mower and entanglement preventing tool for grass mower |
| JP2015104408A (en) | 2013-11-28 | 2015-06-08 | 株式会社マキタ | Cleaner |
| US20150181806A1 (en) | 2012-06-07 | 2015-07-02 | Dong Myeong Co., Ltd. | Shock absorption device of safety plate for shrub trimmer |
| JP2016135117A (en) | 2015-01-15 | 2016-07-28 | 有限会社高芝ギムネ製作所 | Rotation blade for bush cutter |
| JP3206079U (en) | 2016-06-06 | 2016-09-01 | 佐藤 功教 | Rotating body for grass root removal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0451814A (en) * | 1990-06-15 | 1992-02-20 | Hasegawa Seisakusho:Kk | Reaping blade plate made of synthetic resin |
| JPH0733602U (en) * | 1993-12-09 | 1995-06-20 | シンゲン工業株式会社 | Rotary cutting blade |
| JPH07276305A (en) * | 1994-04-04 | 1995-10-24 | Miyaden:Kk | Tip saw of circular saw and its manufacture |
-
2019
- 2019-08-23 JP JP2019153260A patent/JP7019196B2/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3124220U (en) | 2006-05-30 | 2006-08-10 | 金蔵鋸工業株式会社 | Brush cutter blade |
| JP2009183241A (en) | 2008-02-08 | 2009-08-20 | Fuji Heavy Ind Ltd | Cutter blade and bush cutter |
| JP2011160693A (en) | 2010-02-08 | 2011-08-25 | Teruyoshi Chikamatsu | Chip saw with replaceable blade |
| JP2012211010A (en) | 2011-03-31 | 2012-11-01 | Japan Vilene Co Ltd | Granular material supply device |
| US20150181806A1 (en) | 2012-06-07 | 2015-07-02 | Dong Myeong Co., Ltd. | Shock absorption device of safety plate for shrub trimmer |
| JP3181616U (en) | 2012-12-04 | 2013-02-14 | 豊 粟野 | Chip saw for brush cutter |
| JP2014147362A (en) | 2013-02-01 | 2014-08-21 | Sunaga Seisakusho:Kk | Grass mower and entanglement preventing tool for grass mower |
| JP2015104408A (en) | 2013-11-28 | 2015-06-08 | 株式会社マキタ | Cleaner |
| JP2016135117A (en) | 2015-01-15 | 2016-07-28 | 有限会社高芝ギムネ製作所 | Rotation blade for bush cutter |
| JP3206079U (en) | 2016-06-06 | 2016-09-01 | 佐藤 功教 | Rotating body for grass root removal |
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| JP2019216740A (en) | 2019-12-26 |
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