JP5097969B1 - Mowing blade and mower - Google Patents

Mowing blade and mower Download PDF

Info

Publication number
JP5097969B1
JP5097969B1 JP2011254941A JP2011254941A JP5097969B1 JP 5097969 B1 JP5097969 B1 JP 5097969B1 JP 2011254941 A JP2011254941 A JP 2011254941A JP 2011254941 A JP2011254941 A JP 2011254941A JP 5097969 B1 JP5097969 B1 JP 5097969B1
Authority
JP
Japan
Prior art keywords
blade
grass
mowing
cutting blade
grass cutting
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.)
Active
Application number
JP2011254941A
Other languages
Japanese (ja)
Other versions
JP2013106576A (en
Inventor
猛志郎 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITO Racing Service Co Ltd
Original Assignee
ITO Racing Service Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ITO Racing Service Co Ltd filed Critical ITO Racing Service Co Ltd
Priority to JP2011254941A priority Critical patent/JP5097969B1/en
Priority to PCT/JP2012/080338 priority patent/WO2013077413A1/en
Priority to EP12852295.0A priority patent/EP2783562A4/en
Priority to US14/237,157 priority patent/US20140290073A1/en
Application granted granted Critical
Publication of JP5097969B1 publication Critical patent/JP5097969B1/en
Publication of JP2013106576A publication Critical patent/JP2013106576A/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Harvester Elements (AREA)

Abstract

【課題】 草の絡まりを抑制できる草刈刃、および草刈刃に取り付ける取付部材を提供する。
【解決手段】 草刈刃1は、草刈機3に取り付けて用いられるものであって、略円形の板状の本体部11と、複数の刃部13と、を有する。草刈刃1は、貫通孔21の周辺は比較的平坦であるが、外周側に向かうに連れて湾曲し、外周に向けて下側へ傾斜した傾斜面となっている。より具体的には、本体部11では比較的なだらかに湾曲し、本体部11と刃部13との連結箇所近傍で比較的急角度で湾曲する。
【選択図】図4
PROBLEM TO BE SOLVED: To provide a mowing blade capable of suppressing tangling of grass and an attachment member attached to the mowing blade.
A mowing blade (1) is used by being attached to a mowing machine (3), and has a substantially circular plate-shaped main body portion (11) and a plurality of blade portions (13). The grass cutting blade 1 has a relatively flat periphery around the through-hole 21, but is curved as it goes toward the outer periphery, and has an inclined surface that is inclined downward toward the outer periphery. More specifically, the main body portion 11 is relatively gently curved, and is curved at a relatively steep angle in the vicinity of the connection portion between the main body portion 11 and the blade portion 13.
[Selection] Figure 4

Description

本発明は、雑草を刈り取る草刈機に関するものであり、特に、外周に複数の刃部を有する草刈刃に関する。   The present invention relates to a mower that cuts weeds, and more particularly, to a mowing blade having a plurality of blade portions on the outer periphery.

手持ち式の草刈機として、操作用のハンドルとエンジンなどの原動機を有し、先端部には原動機によって駆動される草刈刃を有するものが用いられている。
従来この草刈刃は、全体として平面板状であって外周に複数の刃が形成してなるものが多く用いられていたが、刃や草刈刃全体が上方に湾曲するように構成された草刈刃も提案されている(特許文献1,2参照)。
2. Description of the Related Art As a hand-held mower, there is used a handle having an operation handle and a prime mover such as an engine, and a tip portion having a mowing blade driven by the prime mover.
Conventionally, this grass cutting blade has been generally used as a flat plate as a whole and has a plurality of blades formed on the outer periphery. However, the grass cutting blade is configured so that the blade and the entire grass cutting blade are curved upward. Has also been proposed (see Patent Documents 1 and 2).

また、刃の破損を抑制するために、刃の先端に非刃部を形成した草刈刃も提案されている(特許文献3参照)。   In order to suppress the breakage of the blade, a grass cutting blade in which a non-blade portion is formed at the tip of the blade has also been proposed (see Patent Document 3).

特開平5−91814号公報JP-A-5-91814 特開平6−284809号公報JP-A-6-284809 特開2001−45833号公報JP 2001-45833 A

従来の草刈刃では、刈り取った草が草刈刃の上に乗りやすく、その結果、草が噛み込んで絡まり易くなるという問題があった。これは、上記特許文献1〜3によっても解消されるものではなかった。   The conventional grass cutting blade has a problem that the cut grass is easy to ride on the grass cutting blade, and as a result, the grass is easily bitten and entangled. This was not solved by the above Patent Documents 1 to 3.

本発明の目的は、草の絡まりを抑制できる草刈刃を提供することである。 An object of the present invention is to provide a mowing blade that can suppress tangling of grass.

上述した問題を解決するためになされた請求項1に記載の発明は、外周に複数の刃部を有する草刈機用の草刈刃であって、当該草刈刃は上面視で略円形形状であり、かつ、外周に向かい下側に湾曲する湾曲形状であって、前記刃部の先端と、少なくとも3つの前記刃部の外周方向先端を通過する面と、がなす角度は30°〜60°の範囲であることを特徴とする。 The invention according to claim 1, which has been made to solve the above-described problem, is a mowing blade for a mower having a plurality of blades on the outer periphery, and the mowing blade has a substantially circular shape in a top view. In addition, the angle between the tip of the blade part and the surface passing through the tip in the outer peripheral direction of at least three blade parts is 30 ° to 60 °. It is a range .

このように構成された草刈刃であれば、刃部により刈り取られた草や薙ぎ倒された草が、回転する草刈刃の傾斜面に接触した際に草刈刃の外側(半径方向の外側)方向に弾かれて飛ばされる。そのため草刈刃の上に草が乗りにくくなる結果、草同士が絡んだり、草刈機が草を巻き込んでしまうことを抑制できる。   In the case of the grass cutting blade configured in this way, when the grass cut by the blade portion or the rowed grass comes into contact with the inclined surface of the rotating grass cutting blade, the direction of the outside (radially outward) direction of the grass cutting blade It will be blown by you. As a result, it becomes difficult for the grass to ride on the grass cutting blade, and as a result, the grass can be prevented from getting entangled and the grass mower can get the grass involved.

上述した刃部は、草刈刃の外周方向の端部に刃の形成されていない保護部が設けられていてもよい。 As for the blade part mentioned above, the protection part in which the blade is not formed may be provided in the edge part of the outer peripheral direction of a mowing blade.

このように構成された草刈刃であれば、刃が草以外の石やコンクリート壁などに接触しにくくなるため、刃こぼれや刃の磨耗を抑制できる。
上述した保護部を設ける場合には、保護部が刃よりも前方に突出するように構成してもよい。
With the grass cutting blade configured in this way, the blade is less likely to come into contact with stones or concrete walls other than grass, so that blade spillage and blade wear can be suppressed.
When providing the protection part mentioned above, you may comprise so that a protection part may protrude ahead rather than a blade.

このように構成することで、刃が石などに接触することをより効果的に抑制することができる。また保護部によって草を刃側に案内して、効果的に草を刈り取ることができる。
なお、保護部が刃より前方に突出している構成の場合、上述したように保護部が草を刃側に案内するため、刈り取った草が草刈刃の中心側に集まりやすくなるが、本発明の草刈刃は傾斜面が形成されているため、草が中心側に集まることが抑制でき、刃の保護、草の効果的な刈り取り、および草の絡みつきの抑制を同時に達成することができる。
By comprising in this way, it can suppress more effectively that a blade contacts a stone. Further, the grass can be effectively cut off by guiding the grass to the blade side by the protection unit.
In the case of a configuration in which the protective part protrudes forward from the blade, the protective part guides the grass to the blade side as described above, so that the cut grass tends to gather on the center side of the grass cutting blade. Since the grass cutting blade has an inclined surface, it is possible to suppress the grass from gathering to the center side, and it is possible to simultaneously achieve protection of the blade, effective cutting of the grass, and suppression of tangling of the grass.

なお、刃の前方とは、換言すると草刈刃の回転方向である。
上述した保護部は、外周が曲面状に形成されていてもよい。このように構成することで、石などに接触したときの衝撃を小さくできるため、保護部が破損する危険の低減、回転する草刈刃に石などが強く弾かれることの抑制、およびコンクリート等の壁を破損させてしまうことの抑制などが達成できる。
In addition, the front of the blade is, in other words, the rotational direction of the mowing blade.
As for the protection part mentioned above, the perimeter may be formed in the shape of a curved surface. By configuring in this way, the impact when contacting a stone or the like can be reduced, so the risk of damage to the protection part is reduced, the stone is not strongly repelled by the rotating grass cutting blade, and the wall of concrete or the like And the like can be prevented from being damaged.

なお、上述した傾斜面は、上述した刃部に形成されてい。このように構成された草刈刃であれば、草を刈る刃の部分を用いて草を外側に飛ばすことができるため、草が絡むことを効果的に抑制できる。 Incidentally, the inclined surfaces described above, that are also formed in blade units described above. If it is the grass cutting blade comprised in this way, since the grass can be blown outside using the part of the blade which cuts grass, it can control effectively that a grass gets entangled.

なお、刃部が傾斜面となっている場合、刃部が平面状である場合よりも地面に接近しやすくなる。よって、先端に保護部が形成されている場合には、草刈刃が地面に埋もれたり、地面にある石などに接触しても刃が破損してしまうことなどが抑制でき都合がよい。   In addition, when the blade part is an inclined surface, it becomes easier to approach the ground than when the blade part is planar. Therefore, when the protection part is formed at the tip, it is possible to suppress the mowing blade from being buried in the ground or from being damaged even if it contacts a stone or the like on the ground.

請求項4に記載の発明は、上述した本発明の草刈刃を備える草刈機である
このような草刈機であれば、上記請求項1に記載の草刈刃を用いる場合と同様の効果を得ることができる。
Invention of Claim 4 is a mower provided with the grass-cutting blade of this invention mentioned above .
If it is such a mower, the same effect as the case where the mowing blade of the said Claim 1 is used can be acquired.

草刈刃の平面図である。It is a top view of a mowing blade. 草刈刃の斜視図である。It is a perspective view of a grass cutting blade. 図1における草刈刃のA−A断面図である。It is AA sectional drawing of the grass cutting blade in FIG. 図4(A)が草刈刃を草刈機に取り付けた状態を示す側面図であり、図4(B)が草刈刃と草刈機との連結部分の拡大図である。FIG. 4A is a side view showing a state in which the mowing blade is attached to the mower, and FIG. 4B is an enlarged view of a connecting portion between the mowing blade and the mower. 図5(A),(B)が本発明の草刈刃を用いた場合の草刈時の草の状態を示す写真であり、図5(C),(D)が従来の草刈刃を用いた場合の草刈時の草の状態を示す写真である。FIGS. 5 (A) and 5 (B) are photographs showing the state of grass when mowing when the mowing blade of the present invention is used, and FIGS. 5 (C) and 5 (D) are cases where a conventional mowing blade is used. It is a photograph which shows the state of the grass at the time of mowing. 草刈機の使用状態を説明する模式的な図である。It is a typical figure explaining the use condition of a mower. 図7(A)が取付部材を示す斜視図であり、図7(B)が平板状の草刈刃を示す斜視図である。FIG. 7A is a perspective view showing an attachment member, and FIG. 7B is a perspective view showing a flat grass cutting blade. 図8(A)が取付部材を草刈刃の上面側に配置した状態を示す斜視図であり、図8(B)が図8(A)のD−D断面図である。FIG. 8A is a perspective view showing a state in which the attachment member is disposed on the upper surface side of the grass cutting blade, and FIG. 8B is a cross-sectional view taken along the line DD in FIG. 8A. 図9(A)が変形例の斜視図であり、図9(B)が図9(A)のE−E断面図である。FIG. 9A is a perspective view of a modified example, and FIG. 9B is a cross-sectional view taken along line EE in FIG. 9A.

以下に本発明の実施形態を図面と共に説明する。
[実施例1]
(1)草刈刃の構成
本実施例の草刈刃1は、図4(A)に示す草刈機3に取り付けて用いられるものであって、図1および図2に示すように、略円形の板状の本体部11と、複数の刃部13と、を有する。
Embodiments of the present invention will be described below with reference to the drawings.
[Example 1]
(1) Configuration of Mowing Blade The mowing blade 1 of this embodiment is used by being attached to the mowing machine 3 shown in FIG. 4 (A). As shown in FIGS. And a plurality of blade parts 13.

本体部11の中央には、草刈機3の後述する駆動軸35に草刈刃1を取り付ける際に用いる貫通孔21が形成されている。
刃部13は本体部11の外周から外側に延びだすように設けられている。本実施例では6個の刃部13が等間隔に配置されている。
In the center of the main body 11, a through hole 21 is formed that is used when the mowing blade 1 is attached to a drive shaft 35 (described later) of the mower 3.
The blade portion 13 is provided so as to extend outward from the outer periphery of the main body portion 11. In this embodiment, six blade portions 13 are arranged at equal intervals.

刃部13は、回転方向(図1に示す矢印方向)側の端部に刃23が設けられており、この刃23にて草などを刈り取ることができる。刃部13の先端、即ち草刈刃1の外周方向の端部には、刃23の形成されていない保護部25が設けられている。この保護部25は、刃23よりも前方側、即ち回転方向側に突出している。また、保護部25はその外周の表面が刃23から連続する滑らかな曲面状に形成されている。   The blade portion 13 is provided with a blade 23 at an end portion on the rotation direction (arrow direction shown in FIG. 1) side, and the blade 23 can cut grass and the like. At the tip of the blade portion 13, that is, the end portion in the outer peripheral direction of the mowing blade 1, a protection portion 25 in which the blade 23 is not formed is provided. The protection part 25 protrudes forward of the blade 23, that is, the rotation direction side. Further, the protective portion 25 is formed in a smooth curved surface whose outer peripheral surface continues from the blade 23.

草刈刃1の図1におけるA−A断面図を図3に示す。草刈刃1は、貫通孔21の周辺は比較的平坦であるが、外周側に向かうに連れて湾曲し、外周に向かい下側へ傾斜した傾斜面となっている。より具体的には、本体部11は比較的なだらかに湾曲した傾斜面であり、本体部11と刃部13との連結箇所近傍は比較的急角度で湾曲する傾斜面となっている。傾斜面の角度は先端ほど大きくなるが、刃部13の先端と、複数の刃部13の先端が通過する平面Bと、がなす角度Cは、60°以下の角度となるように形成される。   FIG. 3 is a cross-sectional view of the cutting blade 1 taken along the line AA in FIG. The grass cutting blade 1 has a relatively flat periphery around the through-hole 21 but is curved as it goes toward the outer periphery, and has an inclined surface that is inclined downward toward the outer periphery. More specifically, the main body portion 11 is a relatively gently inclined surface, and the vicinity of the connecting portion between the main body portion 11 and the blade portion 13 is an inclined surface that curves at a relatively steep angle. The angle of the inclined surface increases with the tip, but the angle C formed by the tip of the blade portion 13 and the plane B through which the tips of the plurality of blade portions 13 pass is formed to be an angle of 60 ° or less. .

(2)草刈刃の草刈機への取り付け
草刈機3を図4(A)に示す。なお図4(A),(B)では、草刈刃1を理解を容易にするために断面図で示している。草刈機3は、エンジン31、パイプシャフト33、駆動軸35、パイプシャフト33の内部に配置される図示しない回転軸などを備える。エンジン31は、パイプシャフト33の内部の回転軸を回転させ、その回転力によって駆動軸35が回転する。
(2) Attaching the mowing blade to the mower The mower 3 is shown in FIG. 4A and 4B, the mowing blade 1 is shown in a cross-sectional view for easy understanding. The mower 3 includes an engine 31, a pipe shaft 33, a drive shaft 35, a rotation shaft (not shown) disposed inside the pipe shaft 33, and the like. The engine 31 rotates the rotating shaft inside the pipe shaft 33, and the driving shaft 35 is rotated by the rotating force.

草刈刃1と草刈機3との連結部分の拡大図を図4(B)に示す。草刈刃1は、駆動軸35の先端(下端)を貫通孔21に挿入した状態で、留め金具37を挟み込んでボルト39を駆動軸35に締着することで固定され、駆動軸35と一体に回転するようになる。   FIG. 4B shows an enlarged view of a connecting portion between the grass cutting blade 1 and the grass cutter 3. The grass cutting blade 1 is fixed by inserting a fastener 37 and fastening a bolt 39 to the drive shaft 35 with the tip (lower end) of the drive shaft 35 inserted into the through hole 21, and is integrated with the drive shaft 35. It starts to rotate.

このように草刈刃1を取り付けた状態でエンジン31を駆動させると、パイプシャフト33の内部の回転軸および駆動軸35が回転し、それに伴い草刈刃1が回転して、雑草などを刈り取ることができるようになる。   When the engine 31 is driven with the grass cutting blade 1 attached in this way, the rotation shaft and the drive shaft 35 inside the pipe shaft 33 rotate, and the grass cutting blade 1 rotates accordingly, so that weeds and the like can be cut. become able to.

(3)効果
以上説明した本実施例の草刈刃1であれば、図4(B)に示すように、刃部13により刈り取られた草や薙ぎ倒された草7が、回転する草刈刃1の傾斜面に接触した際に草刈刃1の外側(半径方向の外側)方向に弾き出される。
(3) Effect With the grass cutting blade 1 of the present embodiment described above, the grass cutting blade 1 in which the grass cut by the blade 13 or the grass 7 that has been rowed is rotated as shown in FIG. When it comes into contact with the inclined surface, it is ejected in the direction of the outside (radially outside) of the grass cutting blade 1.

そのため草刈刃1の上に草が乗りにくくなる結果、草同士が絡んだり、草刈機3が草を巻き込んでしまうことを抑制できる。
図5(A)〜(D)に、本発明の草刈刃の一例を用いて草刈を行う場合と、従来の平面的な草刈刃を用いた場合と、を撮影した写真を示す。本発明の草刈刃(図5(A)、(B))では、草が草刈刃の上方に乗りにくいことがわかる。一方、従来の草刈刃(図5(C)、(D))では、草が草刈刃の上に多く乗っている(特に写真下側)。
Therefore, as a result of the grass becoming difficult to get on the grass cutting blade 1, the grass can be prevented from being entangled and the grass cutter 3 can be prevented from getting caught.
FIGS. 5A to 5D show photographs taken when mowing using an example of the mowing blade of the present invention and when using a conventional flat mowing blade. In the grass cutting blade of the present invention (FIGS. 5A and 5B), it can be seen that the grass is difficult to ride above the grass cutting blade. On the other hand, in the conventional grass cutting blade (FIGS. 5C and 5D), a lot of grass is on the grass cutting blade (particularly on the lower side of the photograph).

また、上記実施例の草刈刃は、保護部25によって刃23が草以外の石やコンクリート壁などに接触しにくくなるため、刃こぼれや刃の磨耗を抑制できる。また、保護部25が前方に突出していることから保護部25により草を刃23側に案内して、効果的に草を刈り取ることができる。   Moreover, the grass cutting blade of the said Example can suppress the blade spill and abrasion of the blade since the blade 23 is less likely to come into contact with stones or concrete walls other than the grass by the protection unit 25. Moreover, since the protection part 25 protrudes ahead, the grass can be effectively reaped by guiding the grass to the blade 23 side by the protection part 25.

また保護部25は外周が曲面状に形成されているため、石などに接触したときの衝撃を小さくでき、保護部25が破損してしまう危険の低減、回転する草刈刃1に石などが強く弾かれることの抑制、およびコンクリート等の壁を破損させてしまうことの抑制などが達成できる。   Further, since the outer periphery of the protective part 25 is formed in a curved shape, the impact when contacting the stone or the like can be reduced, the risk of the protective part 25 being damaged is reduced, and the rotating mowing blade 1 is strongly stoneed. It is possible to achieve suppression of being bounced and suppression of damage to walls such as concrete.

ところで、コンクリート壁や電柱などの障害物付近に生える雑草を刈り取る際には、刃の方向を障害物に対してなるべく平行に近い方向(刃が鉛直に近い方向)として刃を雑草に当てることが望まれる。その方法の1つとしてパイプシャフト33を立てる方法があるが、上記実施例の草刈刃1であれば、図6の障害物5の右側に示すように、刃23が下方向へ傾斜しているため、その角度分、従来の草刈刃9よりもパイプシャフト33を立てる角度を小さくすることができ、作業性が向上する。   By the way, when weeding weeds near obstacles such as concrete walls and utility poles, it is possible to apply the blade to the weed with the direction of the blade as close to the obstacle as possible (the direction of the blade is close to vertical). desired. As one of the methods, there is a method of raising the pipe shaft 33. In the case of the grass cutting blade 1 of the above embodiment, as shown on the right side of the obstacle 5 in FIG. 6, the blade 23 is inclined downward. Therefore, the angle at which the pipe shaft 33 is set up can be made smaller than the conventional grass cutting blade 9 by the angle, and workability is improved.

従来の草刈刃9を用いると、図6の左側に示すようにパイプシャフト33を大きく立てても刃の方向はあまり鉛直に近づかず、作業性が悪い。
なお、刃を障害物5に対して平行に近い方向として雑草7に刃を当てることで、刃が障害物5に当たって破損してしまうことを抑制でき、また多方向から刃を当てることで雑草7を効率よく刈ることができる。
When the conventional grass cutting blade 9 is used, as shown on the left side of FIG. 6, even if the pipe shaft 33 is stood up largely, the direction of the blade does not approach so much vertical, and workability is poor.
In addition, it can suppress that a blade hits the obstruction 5 by making a blade into the direction close | similar to a parallel with the obstruction 5, and it can suppress that a blade hits the obstruction 5, and weed 7 by hitting a blade from multiple directions. Can be cut efficiently.

ところで、上述したように刃が下方向に傾斜していることで障害物付近での作業性が向上するが、傾斜角度を大きくしすぎると平地での草刈り効率が低くなる。そのため、草刈刃1は、図3に示す刃部13の先端と平面Bとがなす角度Cを、30〜60°の範囲とするとよい。傾斜角度をこのような範囲とすることで、傾斜面で草を弾き飛ばし絡まりを抑制しつつ、草刈りの効率を高く維持し、更に障害物付近での作業性を向上できる。障害物付近での作業性の向上に重点を置く場合には、45〜60°の範囲とするとよい。   By the way, although the workability in the vicinity of the obstacle is improved because the blade is inclined downward as described above, the mowing efficiency on the flat ground is lowered when the inclination angle is too large. Therefore, the grass cutting blade 1 is good to make the angle C which the front-end | tip of the blade part 13 and the plane B shown in FIG. 3 make into the range of 30-60 degrees. By setting the inclination angle in such a range, the grass cutting efficiency can be kept high while the grass is blown off on the inclined surface to suppress tangling, and the workability in the vicinity of the obstacle can be improved. In the case where emphasis is placed on improving workability in the vicinity of an obstacle, the range is preferably 45 to 60 °.

もちろん、傾斜角度が30°以下であっても、傾斜面が形成されていれば草の絡まりを抑制することができる。また、傾斜角度が60°を超える場合であっても、やや草刈りの効率は劣るものの、草の絡まりを抑制しつつ草刈りを実行することができる。   Of course, even if the inclination angle is 30 ° or less, the entanglement of the grass can be suppressed if the inclined surface is formed. Even if the inclination angle exceeds 60 °, the mowing can be performed while suppressing the tangling of the grass, although the efficiency of mowing is slightly inferior.

参考例1
(1)取付部材の構成
参考例の取付部材51は、図4に示す草刈機3に取り付けて用いられるものであって、図7(A)に示すように、平板状の基部53と、基部53の外周に連接される傾斜部55と、を有する。草刈機3に用いられる草刈刃としては、例えば図7(B)に示す平板状の草刈刃61を用いることができるが、これに限定されることはなく、様々な形状の草刈刃に適用できる。草刈刃61には貫通孔63が形成されており、貫通孔63を用いて草刈機3の回転軸と連結可能となる。
[ Reference Example 1 ]
(1) Configuration of Mounting Member The mounting member 51 of the present reference example is used by being mounted on the mower 3 shown in FIG. 4, and as shown in FIG. And an inclined portion 55 connected to the outer periphery of the base portion 53. As the grass cutting blade used in the grass cutter 3, for example, a flat grass cutting blade 61 shown in FIG. 7B can be used, but the invention is not limited to this, and can be applied to various shapes of grass cutting blades. . A through hole 63 is formed in the grass cutting blade 61 and can be connected to the rotating shaft of the mower 3 using the through hole 63.

取付部材51の基部53は、中央に孔部57が形成されている。この孔部57は、草刈刃61の貫通孔63とほぼ同形状であり、図8(A)に示すように、取付部材51を草刈刃61の上面側に配置する際に、草刈刃61の貫通孔63に沿った位置とできるように、即ち孔部57と貫通孔63とが重なる位置に配置できるように構成されている。   The base 53 of the attachment member 51 has a hole 57 at the center. The hole 57 has substantially the same shape as the through-hole 63 of the grass cutting blade 61. When the mounting member 51 is disposed on the upper surface side of the grass cutting blade 61, as shown in FIG. It is configured so that it can be positioned along the through hole 63, that is, at a position where the hole 57 and the through hole 63 overlap.

傾斜部55は、草刈刃61の外周に向けて下側に傾斜する傾斜面55aを有する。
なお取付部材51は、全体として草刈刃61の直径よりも小さい径となっている。
(2)取付部材の草刈機への取り付け
取付部材51を取り付ける際には、草刈刃61が草刈機3から外された状態、即ち駆動軸35から抜かれた状態で、取付部材51の孔部57に駆動軸35を通し、その後、草刈刃61の貫通孔63に駆動軸35を通して、留め金具37およびボルト39を用いて固定する。このように取り付けた状態を図8(B)に示す。
The inclined portion 55 has an inclined surface 55 a that is inclined downward toward the outer periphery of the grass cutting blade 61.
The attachment member 51 has a diameter smaller than the diameter of the mowing blade 61 as a whole.
(2) Attaching the attachment member to the grass cutter When attaching the attachment member 51, the hole 57 of the attachment member 51 is removed in a state where the grass cutting blade 61 is removed from the grass cutter 3, that is, a state where it is removed from the drive shaft 35. Then, the drive shaft 35 is passed through, and then the drive shaft 35 is passed through the through-hole 63 of the mowing blade 61 and fixed using the fasteners 37 and the bolts 39. The state of attachment in this way is shown in FIG.

取付部材51は、草刈刃61と重ね合わされた状態で留め金具37やボルト39によって挟み込まれて固定される。よって、取付部材51は草刈刃61と連結して一体に回転する。   The attachment member 51 is sandwiched and fixed by the fasteners 37 and the bolts 39 while being superposed on the grass cutting blade 61. Therefore, the attachment member 51 is connected to the grass cutting blade 61 and rotates integrally.

(3)効果
以上説明した取付部材51を草刈機3に取り付けて用いると、上記実施例1に記載の草刈刃1と同様に、刈り取られた草が草刈刃の上部に乗ってしまうことを抑制でき、草同士が絡んだり、草刈機3が草を巻き込んでしまうことを抑制できる。
(3) Effect When the mounting member 51 described above is used by being attached to the mowing machine 3, the mowing grass is prevented from riding on the upper portion of the mowing blade as in the case of the mowing blade 1 described in the first embodiment. It is possible to prevent the grasses from getting entangled and the mower 3 engulfing the grass.

また上記参考例1の取付部材51は、貫通孔63を利用して草刈機3に固定される草刈刃61に対して、取付部材51を草刈刃61に重ねて貫通孔21と孔部57とを重ねることで草刈機3に取り付けることができる。 Further, the attachment member 51 of the reference example 1 has a through-hole 21 and a hole 57 with the attachment member 51 overlapped with the mowing blade 61 with respect to the mowing blade 61 fixed to the mower 3 using the through-hole 63. Can be attached to the mower 3 by overlapping.

つまり、取付部材51を取り付けるための部品などが不要になり、また簡便に取り付けを行うことができる。さらに、従来から使用されている草刈機に対しても、草刈刃が草刈機への固定のための貫通孔を有するものであれば後から取り付けることができる。   That is, a part or the like for attaching the attachment member 51 becomes unnecessary, and attachment can be performed easily. Further, a conventional mower can be attached later if the mowing blade has a through hole for fixing to the mower.

[変形例]
以上、本発明の実施例について説明したが、本発明は、上記実施例に何ら限定されることはなく、本発明の技術的範囲に属する限り種々の形態をとり得ることはいうまでもない。
[Modification]
As mentioned above, although the Example of this invention was described, it cannot be overemphasized that this invention can take a various form, as long as it belongs to the technical scope of this invention, without being limited to the said Example at all.

例えば、上記実施例1においては、本体部11の外周と刃部13とが傾斜面を形成する構成を例示したが、本体部11および刃部13のいずれか一部において傾斜面が形成されていればよい。なお、上記実施例1のように刃部13が傾斜面を構成している構成であれば、刈った草を即座に外側に飛ばすことができるため、草が絡むことを効果的に抑制できる。   For example, in the first embodiment, the configuration in which the outer periphery of the main body portion 11 and the blade portion 13 form an inclined surface is exemplified, but the inclined surface is formed in any one of the main body portion 11 and the blade portion 13. Just do it. In addition, if the blade part 13 is the structure which comprises the inclined surface like the said Example 1, since the cut grass can be immediately blown outside, it can suppress effectively that a grass gets entangled.

また上記参考例1において示した取付部材51についても同様に、傾斜面の形成される位置は参考例1にて示した位置に限定されない。
また上記参考例1では、孔部57を貫通孔63に重ねてボルト39で留めることで、取付部材51を草刈刃61と一体回転するように固定する構成を例示したが、他の方法によって取付部材51を固定する構成であってもよい。例えば取付部材51を草刈刃61に固定するための固定具(ボルト、ファスナ、クランプ等)を用いて固定する構成であってもよい。また、取付部材51は駆動軸35に固定される構成であってもよい。
Similarly, with respect to the attachment member 51 shown in the reference example 1 , the position where the inclined surface is formed is not limited to the position shown in the reference example 1 .
In the reference example 1 , the hole 57 is overlapped with the through-hole 63 and fastened with the bolt 39 to fix the attachment member 51 so as to rotate integrally with the grass cutting blade 61. The structure which fixes the member 51 may be sufficient. For example, the structure which fixes using the fixing tools (a volt | bolt, a fastener, a clamp, etc.) for fixing the attachment member 51 to the mowing blade 61 may be sufficient. Further, the attachment member 51 may be configured to be fixed to the drive shaft 35.

また、図9(A),(B)に示す草刈刃71のように、刃73は下方向に窪んだ溝部75に設けられる構成であってもよい。このように刃73を周囲より落とし込んで溝状に形成することで、雑草に刃73が当たりやすくなり、雑草を効率よく刈り取ることができるようになる。   Moreover, the structure provided in the groove part 75 dented in the downward direction may be sufficient like the mowing blade 71 shown to FIG. 9 (A), (B). Thus, by dropping the blade 73 from the periphery and forming it into a groove shape, the blade 73 can easily hit the weed, and the weed can be efficiently cut.

1…草刈刃、3…草刈機、5…障害物、7…雑草、9…草刈刃、11…本体部、13…刃部、21…貫通孔、23…刃、25…保護部、31…エンジン、33…パイプシャフト、35…駆動軸、37…留め金具、39…ボルト、51…取付部材、53…基部、55…傾斜部、55a…傾斜面、57…孔部、61…草刈刃、63…貫通孔、71…草刈刃、73…刃、75…溝部 DESCRIPTION OF SYMBOLS 1 ... Mowing blade, 3 ... Mowing machine, 5 ... Obstacle, 7 ... Weed, 9 ... Mowing blade, 11 ... Body part, 13 ... Blade part, 21 ... Through-hole, 23 ... Blade, 25 ... Protection part, 31 ... Engine, 33 ... Pipe shaft, 35 ... Drive shaft, 37 ... Fastener, 39 ... Bolt, 51 ... Mounting member, 53 ... Base, 55 ... Inclined portion, 55a ... Inclined surface, 57 ... Hole, 61 ... Mowing blade, 63 ... Through hole, 71 ... Mowing blade, 73 ... Blade, 75 ... Groove

Claims (4)

外周に複数の刃部を有する草刈機用の草刈刃であって、
当該草刈刃は上面視で略円形形状であり、かつ、外周に向かい下側に湾曲する湾曲形状であって、
前記刃部の先端と、少なくとも3つの前記刃部の外周方向先端を通過する面と、がなす角度は30°〜60°の範囲である
ことを特徴とする草刈刃。
A mowing blade for a mower having a plurality of blades on the outer periphery,
The mowing blade has a substantially circular shape in a top view and a curved shape that curves downward toward the outer periphery ,
The grass cutting blade characterized in that an angle formed between the tip of the blade and a surface passing through the tips of the at least three blades in the outer circumferential direction is in a range of 30 ° to 60 ° .
前記刃部は、前記草刈刃の外周方向の端部に刃の形成されていない保護部が設けられている
ことを特徴とする請求項1に記載の草刈刃。
The grass cutting blade according to claim 1, wherein the blade portion is provided with a protection portion on which an edge is not formed at an end portion in an outer peripheral direction of the grass cutting blade.
前記刃部は、前記保護部が前記刃よりも前方に突出するように構成されている
ことを特徴とする請求項2に記載の草刈刃。
The mowing blade according to claim 2, wherein the blade portion is configured such that the protection portion protrudes forward of the blade.
請求項1から請求項3のいずれか1項に記載の草刈刃を備える草刈機。 A mowing machine comprising the mowing blade according to any one of claims 1 to 3 .
JP2011254941A 2011-11-22 2011-11-22 Mowing blade and mower Active JP5097969B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2011254941A JP5097969B1 (en) 2011-11-22 2011-11-22 Mowing blade and mower
PCT/JP2012/080338 WO2013077413A1 (en) 2011-11-22 2012-11-22 Mower blade and mower
EP12852295.0A EP2783562A4 (en) 2011-11-22 2012-11-22 Mower blade and mower
US14/237,157 US20140290073A1 (en) 2011-11-22 2012-11-22 Grass cutter blade and grass cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011254941A JP5097969B1 (en) 2011-11-22 2011-11-22 Mowing blade and mower

Publications (2)

Publication Number Publication Date
JP5097969B1 true JP5097969B1 (en) 2012-12-12
JP2013106576A JP2013106576A (en) 2013-06-06

Family

ID=47469554

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011254941A Active JP5097969B1 (en) 2011-11-22 2011-11-22 Mowing blade and mower

Country Status (1)

Country Link
JP (1) JP5097969B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6076231B2 (en) * 2013-10-22 2017-02-08 伊藤レーシングサービス株式会社 Mowing blade and mower
JP2016140316A (en) * 2015-02-03 2016-08-08 伊藤レーシングサービス株式会社 Grass mower blade and grass mower

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57109725U (en) * 1980-12-26 1982-07-07
JPS618301A (en) * 1984-06-23 1986-01-16 末瀬 三郎 Circular saw
JPS61136836U (en) * 1985-02-14 1986-08-26
JPH084833Y2 (en) * 1987-07-24 1996-02-14 小松ゼノア株式会社 Rotary blade of brush cutter
JPH0452416U (en) * 1990-09-13 1992-05-01
DE29900270U1 (en) * 1999-01-09 1999-03-18 Andreas Stihl AG & Co., 71336 Waiblingen Knife blade for a brush cutter
JP2000333524A (en) * 1999-05-25 2000-12-05 Ise Noki:Kk Rotating blade
JP2001045833A (en) * 1999-08-09 2001-02-20 Takashi Funabiki Rotary blade of mower
JP2002233224A (en) * 2001-12-21 2002-08-20 Natsuo Kubota Turntable for weed root and weed treatment
JP2004033072A (en) * 2002-07-02 2004-02-05 Kiyotaka Endo Rotary blade
JP2005341837A (en) * 2004-06-01 2005-12-15 Sakuzo Naruko Weeding blade and implement provided with weeding blade
JP3124220U (en) * 2006-05-30 2006-08-10 金蔵鋸工業株式会社 Brush cutter blade
JP4405579B1 (en) * 2009-03-29 2010-01-27 有限会社サージアグリーンカンパニー Circular hollow rotary blade parts for tree modeling

Also Published As

Publication number Publication date
JP2013106576A (en) 2013-06-06

Similar Documents

Publication Publication Date Title
EP3597024B1 (en) High-efficiency cutting system
US20130111863A1 (en) Disc Mower Blades
US20170208741A1 (en) Cutter blade and assembly for a rotary cutter
BR102013014306A2 (en) lawn mower blade for a brush cutter
JP5097969B1 (en) Mowing blade and mower
KR101658165B1 (en) Folded blade for lawn mower
KR101718665B1 (en) Repeat using the lawn mower folding blade
JP2013046577A (en) Rotary blade device for brush cutter
JP2009011308A (en) Spare blade for mowing grass for bush-cutting machine
US9661804B1 (en) Vegetation trimmer
EP2783562A1 (en) Mower blade and mower
JP2024519624A (en) Joint blade for grass cutting
KR101864945B1 (en) A lawn mower blade having a blade guide
JP3194939U (en) Rotary blade for weeding
JP3217662U (en) Rotary blade for weeding
KR200440283Y1 (en) Blade assembly for reaper
JP3117704U (en) Blade in mower
JP5718561B2 (en) Mower for brush cutter
KR101369492B1 (en) Blade for lawn mower cutter and cutter thereof
JP3187237U (en) Rotary blade for weeding
KR20160035938A (en) Four-side knife blade of brush cutter
JP5336265B2 (en) Combined blade for brush cutter
JP3131347U (en) Arbitrary grounding stabilizer with integrated blade protection panel for brush cutter
JP5129877B1 (en) Brush cutter
WO2022215148A1 (en) Root cutter attachable to trimmer, and trimmer provided with same

Legal Events

Date Code Title Description
TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151005

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 5097969

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250