JP3197368U - Brush cutter for brush cutter - Google Patents
Brush cutter for brush cutter Download PDFInfo
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- JP3197368U JP3197368U JP2015000791U JP2015000791U JP3197368U JP 3197368 U JP3197368 U JP 3197368U JP 2015000791 U JP2015000791 U JP 2015000791U JP 2015000791 U JP2015000791 U JP 2015000791U JP 3197368 U JP3197368 U JP 3197368U
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Abstract
【課題】円板状切刃において刈刃の切れ味を長寿命にすることができるとともに、安全な刈払機用刈刃を提供する。【解決手段】刈払機用の円板状刈刃１において、前記円板状刈刃１の基板２より放射状に突設した少なくとも１個の切刃３の側面に鋸歯５を形成するとともに、前記切刃３の先端両側に面取り部６を形成することで前記切刃３の先端を台形形状にした。【選択図】図１[PROBLEMS] To provide a cutting blade for a brush cutter that can make a cutting blade sharp in a disc-shaped cutting blade with a long service life and is safe. In a disk-shaped cutting blade 1 for a brush cutter, saw blades 5 are formed on the side surfaces of at least one cutting blade 3 projecting radially from a substrate 2 of the disk-shaped cutting blade 1, and By forming chamfers 6 on both sides of the tip of the cutting blade 3, the tip of the cutting blade 3 was trapezoidal. [Selection] Figure 1
Description
本考案は、雑草や蔦や笹や芝刈り等を行なう刈払機に用いる刈払機用刈刃に関するものである。 The present invention relates to a cutting blade for a brush cutter used in a brush cutter that performs weeding, weeding, bushing, lawn mowing, or the like.
従来より刈払機に用いる円板状の刈刃は、種々提案されており、チップ状 の切刃が溶接されているものが一般的であった。 Conventionally, various disc-shaped cutting blades used for brush cutters have been proposed, and a tip-shaped cutting blade is generally welded.
特許文献１には刈払機用チップソーが示されているが、この刈払機用直線状のチップソーは、使用を開始して１時間程度で切れ味が低下してしまい、刈払機のエンジンの回転数を上げることで対応していたが、エンジンの音が大きくなって騒音になるとともに、刈刃が高速で回転するために衝撃でチップが欠損してバランスが崩れて危険であるという課題があった。 Patent Document 1 discloses a brush cutter tip saw. However, this linear tip saw for a brush cutter has a reduced sharpness in about one hour after the start of use, and the engine speed of the brush cutter is reduced. However, there was a problem that the noise of the engine became louder and the blade was rotated at a high speed, and the tip was lost due to impact and the balance was lost.
本考案は、上記従来の課題を解決するためになされたものであり、刈刃の切れ味を長寿命にすることができるとともに、安全な刈払機用刈刃を提供することにある。 The present invention has been made to solve the above-described conventional problems, and it is an object of the present invention to provide a cutting blade for a brush cutter that can make the cutting blade sharp and have a long service life.
上記課題を解決するため、本考案の刈払機用刈刃は、刈払機用の円板状刈刃において、前記円板状刈刃の基板より放射状に突設した少なくとも１個の切刃の先端両側に面取り部を形成することで台形状態にするとともに、前記切刃の側面に鋸歯を形成することを特徴とする。
又、本考案にあっては、前記面取り部は上面を研磨して切刃を形成していることが望ましい。
又、本考案にあっては、前記鋸歯は、基板より放射状に突設した切刃に対して正面視表裏対象の位置に鋸歯を形成していることが望ましい。
又、本考案にあっては、図２、前記鋸歯は、先端から内側に向かうにしたがって、両側に拡がるように傾斜して三角形に形成していることが望ましい。
又、本考案にあっては、前記鋸歯は、先端から内側に向かうにしたがって、略同一の幅に形成していることが望ましい。
In order to solve the above-mentioned problems, a cutting blade for a brush cutter according to the present invention is a disc-shaped cutting blade for a brush cutter, the tip of at least one cutting blade projecting radially from a substrate of the disc-shaped cutting blade. A chamfered portion is formed on both sides to form a trapezoidal state, and a saw tooth is formed on the side surface of the cutting blade.
In the present invention, it is desirable that the chamfered portion is formed by cutting the upper surface to form a cutting edge.
In the present invention, it is preferable that the saw blades are formed at positions that are front and back objects with respect to the cutting blades projecting radially from the substrate.
Further, in the present invention, it is desirable that the saw blade in FIG. 2 is formed into a triangular shape that is inclined so as to expand to both sides from the tip toward the inside.
In the present invention, it is desirable that the saw teeth are formed to have substantially the same width from the tip toward the inside.
本考案の刈払機用刈刃は、刈払機用の円板状刈刃において、前記円板状刈刃の基板より放射状に突設した少なくとも１個の切刃の先端両側に面取り部を形成することで前記切刃の先端を台形形状にするとともに、側面に鋸歯を形成したことを特徴とするものであるから、切刃の先端が石などに衝突しても面取り部で逃げるので切刃に大きな衝撃が加わることが無く、その結果、切刃の先端が変形することが無いとともに台形形状部は摩耗しても形状を保つので、長時間使用できるという効果がある。
又、請求項２のように、前記面取り部は上面を研磨して切刃を形成したものは、面取り部でも雑草や蔦や笹や芝刈りができるという効果と面取り部が摩耗しても摩耗後も形状を保つので、長時間使用できるという効果がある。
又、請求項３のように、前記鋸歯は、基板より放射状に突設した切刃に対して正面視表裏対象の位置に鋸歯を形成したものは、表裏ひっくり返すだけで両面の鋸刃を使用することができ、２倍の寿命があるという効果がある。
又、請求項４のように、前記鋸歯を、先端から内側に向かうにしたがって、両側に拡がるように傾斜して台形形状に形成した刈刃は、雑草や蔦や笹等を効率よく刈込むことが出来ると共に長時間の使用が可能である。
又、請求項５のように、前記鋸歯は、先端から内側に向かって略同一の幅に形成した刈刃は、芝等が綺麗に刈込めると共に長時間の使用が可能である。
The cutting blade for a brush cutter according to the present invention is a disc-shaped cutting blade for a brush cutter, in which chamfered portions are formed on both sides of the tip of at least one cutting blade projecting radially from the substrate of the disk-shaped cutting blade. Since the tip of the cutting blade is trapezoidal and the saw blade is formed on the side surface, even if the tip of the cutting blade collides with stone etc. As a result, a large impact is not applied, and as a result, the tip of the cutting edge is not deformed, and the trapezoidal shape portion maintains its shape even if it is worn.
Further, as in claim 2, the chamfered portion having the upper surface polished to form a cutting blade has the effect of being able to cut weeds, reeds, bushes and lawn even in the chamfered portion and wear even if the chamfered portion is worn. Since the shape is maintained afterwards, there is an effect that it can be used for a long time.
Further, as in claim 3, when the saw blades are formed so that the saw blades are formed at the positions of the front and back objects with respect to the cutting blades projecting radially from the substrate, the double-side saw blades are used simply by turning the front and back. And has the effect of having twice the life.
In addition, the cutting blade formed in a trapezoidal shape by tilting the saw blade so as to expand to both sides as it goes inward from the tip, as in claim 4, efficiently cuts weeds, reeds, reeds, etc. Can be used for a long time.
Further, according to the fifth aspect of the present invention, the saw blade having the substantially same width from the tip to the inside can be used for a long time while the turf or the like can be cleanly cut.
以下、本考案の実施の形態を図１乃至図３に基づいて詳述すると、刈払機用刈刃１は、刈払機用の円板状刈刃１において、円板状刈刃１の基板２より放射状に突設した切刃３の側面４に鋸歯５を形成するとともに、切刃３の先端両側に面取り部６を形成することで切刃３の先端を台形形状に形成している。 Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. A cutting blade 1 for a brush cutter is a substrate 2 of a disk-shaped cutting blade 1 in a disc-shaped cutting blade 1 for a brush cutter. The saw blade 5 is formed on the side surface 4 of the cutting blade 3 projecting more radially, and the chamfered portions 6 are formed on both sides of the tip of the cutting blade 3 so that the tip of the cutting blade 3 is formed in a trapezoidal shape.
刈払機用刈刃１は、板厚（ｔ）が１．２５ミリメートル、外径（Ｄ１）が２５０ミリメートルのＳＫＳ−５（合金工具鋼鋼材）で形成されているが、その他の材料で、外径（Ｄ１）は刈払機の大きさに合わせる。 The brush cutter blade 1 is made of SKS-5 (alloy tool steel) having a plate thickness (t) of 1.25 millimeters and an outer diameter (D1) of 250 millimeters. The diameter (D1) is adjusted to the size of the brush cutter.
基板２は、径（Ｄ２）が１６０ミリメートルの円板状に形成されており、幅（Ｂ１）が６０ミリメートルの切刃３が突設されるとともに中央に取付穴７が形成されている。基板２の径（Ｄ２）は刈払機の大きさに合わせる。 The substrate 2 is formed in a disk shape having a diameter (D2) of 160 millimeters, a cutting blade 3 having a width (B1) of 60 millimeters is projected, and a mounting hole 7 is formed at the center. The diameter (D2) of the substrate 2 is adjusted to the size of the brush cutter.
切刃３の先端両側に長さ（Ｌ）が２０ミリメートルで幅（Ｂ）が３ミリメートルの面取り部６を形成することで切刃３の先端を台形形状に形成しており、石が切刃３の先端に当たっても面取り部６で石を弾いて鋸歯へ石との衝撃を小さくすることができるのであり、鋸歯５の先端が変形するのを防止することができるという効果があり、多少変形しても欠損させることなく修復ができるのである。 The tip of the cutting blade 3 is formed in a trapezoidal shape by forming a chamfer 6 having a length (L) of 20 millimeters and a width (B) of 3 millimeters on both sides of the tip of the cutting blade 3, and the stone is the cutting blade. Even if it hits the tip of 3, the stone can be repelled by the chamfered portion 6 to reduce the impact of the stone on the saw blade, and the tip of the saw blade 5 can be prevented from being deformed. However, it can be repaired without loss.
面取り部６の端縁８の上面を研磨して第２の切刃９が切刃３の先端に形成されている。第２の切刃９の部分で雑草や蔦や笹や芝の切断を行なうと、第２の切刃９の先端部分及び第２の切刃９の下面部分の摩耗が始まり使用していくに従って第２の切刃９の先端部分と下面部分とで構成される切刃の角度が維持されるのであり、長時間切れ味の良い状態を維持することができるのである。 A second cutting edge 9 is formed at the tip of the cutting edge 3 by polishing the upper surface of the edge 8 of the chamfered portion 6. When weeds, reeds, reeds, and turf are cut at the second cutting edge 9, the wear of the tip of the second cutting edge 9 and the bottom surface of the second cutting edge 9 begins and is used. The angle of the cutting edge constituted by the tip portion and the lower surface portion of the second cutting edge 9 is maintained, and a sharp state can be maintained for a long time.
図２に示すように、切刃３には、正面視表裏対象の位置に長さ（Ｌ１）１４ミリメートルで幅（Ｂ２）９ミリメートルの三角形の鋸刃が形成されている。鋸歯５の部分で雑草や蔦や笹等を刈り取るのであるが、鋸歯５は、回転方向に対し、切刃３との間で傾斜した逃げ角度αが設けられている。 As shown in FIG. 2, the saw blade 3 is formed with a triangular saw blade having a length (L1) of 14 millimeters and a width (B2) of 9 millimeters at the position of the front and back objects. Weeds, reeds, reeds, and the like are cut off at the portion of the saw blade 5. The saw blade 5 is provided with a clearance angle α that is inclined with respect to the cutting edge 3 with respect to the rotation direction.
図２に示すように、鋸歯５は、複数個の連接した三角形の山の部分５ａと谷の部分５ｂとで構成されており、切刃３の側面に沿って形成されている。鋸歯５の部分で雑草や笹刈りの切断を行なうと、鋸歯５の山の部分５ａから摩耗が始まり使用していくに従って谷の部分５ｂが深くなり、その後、山の部分５ａが徐々に鋭角になっていくのであり、長時間切れ味の良い状態を維持することができるのである。 As shown in FIG. 2, the saw blade 5 is composed of a plurality of connected triangular peak portions 5 a and valley portions 5 b, and is formed along the side surface of the cutting edge 3. When weed cutting or mowing cutting is performed at the sawtooth portion 5, the valley portion 5b becomes deeper as wear starts from the mountain portion 5a of the sawtooth 5, and then the mountain portion 5a gradually becomes sharper. As a result, the sharpness can be maintained for a long time.
図３は、鋸歯の他の実施例を示すものであり、切刃３には、正面視表裏対象の位置に長さ（Ｌ２）が７ミリメートルで幅（Ｂ３）３ミリメートル（Ｂ４）２ミリメートルの略同一幅に鋸歯５０が形成されている。鋸歯５０の部分で芝刈等を行なうのであるが、鋸歯５０は、回転方向に対し、切刃３との間で傾斜した逃げ角度αが設けられている。 FIG. 3 shows another embodiment of the saw blade. The cutting blade 3 has a length (L2) of 7 mm and a width (B3) of 3 mm (B4) of 2 mm at the position of the front and back objects. Saw teeth 50 are formed with substantially the same width. Lawn mowing or the like is performed at the portion of the saw blade 50, and the saw blade 50 is provided with a clearance angle α inclined with respect to the cutting blade 3 with respect to the rotation direction.
図３に示すように、鋸歯５０は、複数個の連接した略同一幅の山の部分５０ａと谷の部分５０ｂとで構成されており、切刃３の側面に沿って形成されている。鋸歯５０の部分で芝等の切断を行なうと、鋸歯５０の山の部分５０ａから摩耗が始まり使用していくに従って谷の部分５０ｂが深くなり、その後、山の部分５０ａが徐々に鋭角になっていくのであり、長時間切れ味の良い状態を維持することができるのである。 As shown in FIG. 3, the saw tooth 50 is composed of a plurality of connected crest portions 50 a and trough portions 50 b having substantially the same width, and is formed along the side surface of the cutting blade 3. When turf or the like is cut at the sawtooth portion 50, wear begins from the crest portion 50a of the sawtooth 50 and the trough portion 50b becomes deeper as it is used, and then the crest portion 50a gradually becomes sharper. It is possible to maintain a sharp state for a long time.
１ 刈払機用刈刃
２ 基板
３ 切刃
４ 切刃の側面
５、５０ 鋸歯
６ 面取り部
７ 取付穴
８ 面取り部の端縁
９ 第２の切刃
DESCRIPTION OF SYMBOLS 1 Cutting blade for brush cutter 2 Substrate 3 Cutting blade 4 Side surface of cutting blade 5, 50 Saw tooth 6 Chamfered portion 7 Mounting hole 8 Edge of chamfered portion 9 Second cutting blade
Claims (5)
The cutting blade for a brush cutter according to claim 1, wherein the saw teeth are formed to have substantially the same width from the tip toward the inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015000791U JP3197368U (en) | 2015-02-20 | 2015-02-20 | Brush cutter for brush cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015000791U JP3197368U (en) | 2015-02-20 | 2015-02-20 | Brush cutter for brush cutter |
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| Publication Number | Publication Date |
|---|---|
| JP3197368U true JP3197368U (en) | 2015-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2015000791U Expired - Fee Related JP3197368U (en) | 2015-02-20 | 2015-02-20 | Brush cutter for brush cutter |
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| JP (1) | JP3197368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111185283A (en) * | 2020-01-20 | 2020-05-22 | 宜宾钢猫科技有限公司 | Three-tooth-edge crushing structure and crushing method for cement crushing |
-
2015
- 2015-02-20 JP JP2015000791U patent/JP3197368U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111185283A (en) * | 2020-01-20 | 2020-05-22 | 宜宾钢猫科技有限公司 | Three-tooth-edge crushing structure and crushing method for cement crushing |
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