JPH09163848A - Blade for bush slasher - Google Patents
Blade for bush slasherInfo
- Publication number
- JPH09163848A JPH09163848A JP34782495A JP34782495A JPH09163848A JP H09163848 A JPH09163848 A JP H09163848A JP 34782495 A JP34782495 A JP 34782495A JP 34782495 A JP34782495 A JP 34782495A JP H09163848 A JPH09163848 A JP H09163848A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- tip
- blade plate
- cemented carbide
- slasher
- 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.)
- Pending
Links
Landscapes
- Harvester Elements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、動力式の刈払い機に
使用する刃の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a blade used in a power type brush cutter.
【０００２】[0002]
【従来の技術】草刈作業等に使用される動力式の刈り払
い機は、図１に示すとおり、動力機８の回転出力を棒体
９の内部に配置させたシャフトを介して先端のフランジ
部に伝える構成となっており、刈り払い機用刃の取り付
けは、該フランジ部の下方面部に刃の中心部を圧接させ
た状態となるようにネジ止めすることによって行われる
構成となっているのであるが、このような刈払い機に使
用される刃は、円形状の金属刃板の外周部に多数の超硬
チップを植え付けた、いわゆるチップソーが使用される
場合が多く、このようなチップソーは、図２に示すとお
り、円形状の刃板の外周部に鋸歯を連続的に形成すると
ともに、各歯の機能部に、先尖り状に形成した超硬チッ
プ１２をロウ付け固定した構成となっており、刃の回転
方向における超硬チップ１２の前面部に間口の大きな凹
欠部１１を形成した構成となっているのが普通である。2. Description of the Related Art As shown in FIG. 1, a power type mower used for mowing work, etc., uses a rotary output of a power generator 8 inside a rod 9 and a shaft arranged at the tip of a flange portion. Since the blade is attached to the lower part of the flange so that the center of the blade is pressed against the lower surface of the flange, the blade for the brush cutter is attached by screwing. However, the blade used in such a brush cutter is often a so-called tip saw in which a large number of cemented carbide tips are planted on the outer peripheral portion of a circular metal blade plate, and such a tip saw is As shown in FIG. 2, a saw blade is continuously formed on the outer peripheral portion of a circular blade plate, and a sharpened carbide tip 12 is brazed and fixed to the functional portion of each tooth. And carbide in the blade rotation direction Is usually Tsu has a configuration in which the formation of the large concave portion 11 of the frontage in the front face of the flop 12.
【０００３】[0003]
【発明が解決しようとする課題】刈払い機を使用して草
刈作業をする場合にあっては、作業中に回転刃が散らば
っている石に頻繁に接触し、また、石垣の縁に生えた草
刈作業を行なうような場合には、刃の先端部が石垣に絶
えず接触することになるのであるが、刃板における超硬
チップの前面側の間口が大きく開いた形となっていた場
合、作業中に石が超硬チップの前面に激しく当たり、超
硬チップを損傷したり、接触時の衝撃により超硬チップ
自体が飛んでしまうことになり、このことが、チップソ
ーの最大の難点とされているのである。特に、小石を敷
き詰めた広場等での草削り作業や、地中に刃の先端を入
り込ませた状態で草の根切り作業を行なおうとすると、
極めて短時間の内に全ての超硬チップが飛んでしまい、
刃としての機能を失わせてしまうことになるのである。In the case of mowing work using a brush cutter, rotary blades frequently come into contact with stones scattered during the work and also grow on the edges of stone walls. When performing mowing work, the tip of the blade will constantly contact the stone wall, but if the front side of the carbide tip on the blade plate is wide open, Stones hit the front of the carbide tip violently inside, damaging the carbide tip and causing the carbide tip itself to fly due to the impact at the time of contact, which is the biggest difficulty of the tip saw Is there. In particular, when you try to cut grass in an open space with pebbles, or when cutting grass with the tip of the blade in the ground,
In a very short time, all the carbide chips flew away,
The function as a blade will be lost.
【０００４】[0004]
【課題を解決するための手段】この発明は、円形状の刃
板に複数の超硬チップを植設した構成の刈払い機用刃に
おいて、超硬チップの先端部を、２辺をもって形成した
２辺形状とする一方、刃板の外周部に、顎部を有する凹
欠部を形成し、超硬チップを刃板に取り付けるに際し、
超硬チップの先端頂点部が、凹欠部に形成された顎部の
近傍位置で、かつ、刃板の外周部よりやや外側に突出し
た状態となるようにして固着させた構成とすることによ
って、草刈作業中に刃が石等に接触した場合でも超硬チ
ップへの負担を軽減し、超硬チップが損傷したり、刃板
から超硬チップから飛んでしまうのを防止するととも
に、従来不可能であった、チップソーを使用しての草削
り作業や、草の根切り作業をも可能にしようとするもの
である。According to the present invention, in a blade for a brush cutter having a structure in which a plurality of cemented carbide tips are planted on a circular blade plate, the tip end of the cemented carbide tip has two sides. While forming a two-sided shape, on the outer peripheral portion of the blade plate, when forming a recessed portion having a jaw portion, when attaching the cemented carbide tip to the blade plate,
The tip apex of the cemented carbide tip is fixed in the vicinity of the jaw formed in the recessed portion and in a state of protruding slightly outward from the outer peripheral portion of the blade plate. Even if the blade comes into contact with stones during mowing, the burden on the cemented carbide tip is reduced, damage to the cemented carbide tip and flying from the blade plate to the cemented carbide tip are prevented. It is intended to enable grass shaving work using a tip saw and grass root cutting work that were possible.
【０００５】[0005]
【実施例】図面にもとづいて、この発明の一実施例を説
明すると、刈払い機用刃１は、図４乃至図７に示すとお
り、円形状の刃板２に、段差状の切り欠を形成すること
によって、顎部４を有する凹欠部５を形成するととも
に、超硬チップ３を刃板２に取り付けるに際し、超硬チ
ップ３の先端頂点部Ｃが、凹欠部５に形成された顎部４
の近傍位置で、かつ、刃板２の外周部６よりやや外側に
突出した状態となるようにしてロウ付け固着させた概略
構成となっているのである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In a brush cutter blade 1, a step-shaped cutout is formed on a circular blade plate 2 as shown in FIGS. By forming it, the concave portion 5 having the jaw portion 4 is formed, and when the cemented carbide tip 3 is attached to the blade plate 2, the tip apex portion C of the cemented carbide tip 3 is formed in the concave portion 5. Jaw 4
It has a schematic configuration in which it is brazed and fixed so as to be in a state of protruding at a position in the vicinity of and slightly outward of the outer peripheral portion 6 of the blade plate 2.
【０００６】すなわち、刃板２は、金属製の円形板をも
って形成されており、その外周部には、段差状の凹欠部
５を形成することにより、円板２の外周部６と凹欠部５
との始まり位置に顎部４が形成された構成となってお
り、また、凹欠部５における顎部４の形成位置の反対側
には、超硬チップ３の基部を差し入れ得る形の凹部が形
成されており、しかも、刃板の中心部に、刈払い機に取
り付けるための孔７が形成された構成となっているので
ある。That is, the blade plate 2 is formed of a metal circular plate, and a stepped recess 5 is formed on the outer peripheral portion thereof so that the outer peripheral portion 6 of the disc 2 and the recessed portion 5 are recessed. Part 5
The jaw portion 4 is formed at the starting position of, and on the side opposite to the formation position of the jaw portion 4 in the recessed portion 5, there is a concave portion into which the base portion of the cemented carbide tip 3 can be inserted. In addition, the hole 7 is formed in the center of the blade plate for attachment to the brush cutter.
【０００７】刃板２に取り付けられる超硬チップ３は、
刃板２に形成した凹部内に差し入れ得る巾に形成されて
おり、その先端部は、辺Ａと辺Ｂとを有する２辺形状と
することによって、鈍角状の頂点Ｃを形成した構成とな
っており、刃板２への取り付けに際しては、超硬チップ
３の基部を刃板２に形成した凹部内に差し入れた後、ロ
ウ付け加工を施すことによって行なわれるのであるが、
その際、チップ３の先端頂点部Ｃが、凹欠部５における
顎部４と向かい合い、かつ、刃板２の外周部６よりやや
外側に突出した状態となるようにして行なわれるのであ
る。The carbide tip 3 attached to the blade plate 2 is
The blade plate 2 is formed to have a width that allows it to be inserted into a recess formed in the blade plate 2, and its tip has a two-sided shape having a side A and a side B to form an obtuse-angled vertex C. When mounting on the blade plate 2, the base of the cemented carbide tip 3 is inserted into the recess formed in the blade plate 2 and then brazing is performed.
At this time, the tip apex portion C of the tip 3 faces the jaw portion 4 of the recessed portion 5 and is projected slightly outward from the outer peripheral portion 6 of the blade plate 2.
【０００８】[0008]
【発明の効果】この発明にかかる刈払い機用刃は、上記
のような構成であって、草刈作業中に刃が石に頻繁に接
触しても、超硬チップが飛ぶようなことはなく、また、
従来のチップソーでは、作業が不可能であった小石の多
い広場での作業や、草の根切り作業を可能にし、さら
に、刃板に取り付ける超硬チップの数も８個程度（従来
のものに比べれば５分の１程度）で十分な機能を発揮し
得、製造コストを大幅におさえ得るという利点があるの
である。EFFECT OF THE INVENTION The blade for a brush cutter according to the present invention is constructed as described above, and even if the blade frequently contacts the stone during the mowing work, the cemented carbide tip does not fly. ,Also,
It is possible to work in open spaces with many pebbles and grass root cutting work that was impossible with conventional tip saws, and the number of cemented carbide tips attached to the blade plate is about 8 (compared to conventional ones) There is an advantage that a sufficient function can be exhibited at about 1/5) and the manufacturing cost can be significantly reduced.
【０００９】すなわち、従来の刈払い機用のチップソー
にあっては、図２に示すとおり、刃板の外周部に、外周
部付近の間口が大きく開いた鋸歯を形成し、その切断機
能を有する箇所に超硬チップをロウ付けした構成となっ
ているのであるが、超硬チップの横に間口が大きく開い
た格好の凹欠部を形成した構成とした場合、作業中に凹
欠部内に石の角部を巻き込み、超硬チップの前面側に激
しく接触して超硬チップを損傷したり、また、超硬チッ
プ自体が飛んでしまうことになるのであるが、この発明
にかかる刈払い機用の刃にあっては、超硬チップ３の横
位置に外周側に顎部４を有する凹欠部５が形成されてお
り、しかも、その顎部４の上端部が超硬チップ３よりや
や低い位置で、超硬チップ３の先端と向かい合った構成
となっている結果、草刈作業中に刃が石等に接触した場
合であっても、超硬チップ３の全面に衝撃を与えるとい
うことは無く（図５参照）、超硬チップ３が刃板２から
飛ぶのを防止し得るし、また、超硬チップ３への負担を
極端に軽減させることができる結果、刃板２に８個程度
の超硬チップ３を配置させれば十分機能させ得、刃の製
造コストを極端に軽減し得るという利点があり、さら
に、従来のもののように刃板の外周部に間口の大きな凹
欠部が存在しない結果、刈った草が飛び散るといったよ
うなことがないという利点があるのである。That is, in the conventional tip saw for a brush cutter, as shown in FIG. 2, a saw tooth having a wide opening is formed on the outer peripheral portion of the blade plate and has a cutting function. It has a structure in which a cemented carbide tip is brazed to the place, but if you have a structure in which a suitable recessed portion with a wide frontage is formed next to the carbide tip, stones will be placed in the recessed portion during work. It is possible to damage the carbide tip by violently making contact with the front side of the carbide tip, or to fly the carbide tip itself, for the brush cutter according to the present invention. In the blade of No. 5, a concave cutout 5 having a jaw 4 on the outer peripheral side is formed at the lateral position of the carbide tip 3, and the upper end of the jaw 4 is slightly lower than the carbide tip 3. As a result, the position is such that it faces the tip of the carbide tip 3. Even if the blade comes into contact with stones or the like during mowing work, it does not give a shock to the entire surface of the carbide tip 3 (see FIG. 5) and prevents the carbide tip 3 from flying from the blade plate 2. Moreover, as a result of being able to extremely reduce the load on the cemented carbide tip 3, if eight cemented carbide tips 3 are arranged on the blade plate 2, they can function sufficiently and the manufacturing cost of the blade can be reduced. There is an advantage that it can be extremely reduced, and further there is an advantage that there is no scattering of cut grass as a result of the absence of a large recess in the outer periphery of the blade plate unlike the conventional one. is there.
【図１】刈払い機の全体図である。FIG. 1 is an overall view of a brush cutter.
【図２】従来の刈払い機用の刃を示す斜視図である。FIG. 2 is a perspective view showing a blade for a conventional brush cutter.
【図３】従来の刈払い機用の刃の部分拡大図である。FIG. 3 is a partially enlarged view of a blade for a conventional brush cutter.
【図４】この発明にかかる刃の全体を示す正面図であ
る。FIG. 4 is a front view showing the entire blade according to the present invention.
【図５】刃板への超硬チップの取り付け状態を示す部分
拡大正面図である。FIG. 5 is a partially enlarged front view showing a mounting state of a cemented carbide tip on a blade plate.
【図６】この発明にかかる刃の全体を示す斜視図であ
る。FIG. 6 is a perspective view showing an entire blade according to the present invention.
【図７】この発明にかかる刃の部分拡大斜視図である。FIG. 7 is a partially enlarged perspective view of a blade according to the present invention.
１ 刈払い機用刃 ２ 刃板 ３ 超硬チップ ４ 顎部 ５ 凹欠部 ６ 外周部 1 Blade for brush cutter 2 Blade plate 3 Carbide tip 4 Jaw part 5 Recessed part 6 Peripheral part
Claims (1)
植設した刈払い機用刃において、超硬チップ３の先端部
を、少なくとも、辺Ａと辺Ｂとを有する２辺形状とする
一方、刃板２の外周部に、段差状に入り込んだ切り込み
部を形成することによって顎部４を有する凹欠部５を形
成し、超硬チップ３を該刃板２に固着させるに際し、チ
ップ３の先端頂点部Ｃが、凹欠部５における顎部４に向
かい合い、かつ、刃板２の外周部よりやや外側に突出し
た状態となるようにして配置固定させたことを特徴とす
る刈払い機用刃。1. A blade for a brush cutter, wherein a plurality of cemented carbide tips 3 are planted on a circular blade plate 2, wherein the tip of the cemented carbide tip 3 has at least two sides A and B. On the other hand, while forming the shape, a recessed portion 5 having a jaw 4 is formed by forming a stepped portion on the outer peripheral portion of the blade plate 2 to fix the cemented carbide tip 3 to the blade plate 2. At this time, the tip apex portion C of the tip 3 is arranged and fixed such that the tip apex portion C faces the jaw portion 4 in the recessed portion 5 and projects slightly outward from the outer peripheral portion of the blade plate 2. A blade for a brush cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34782495A JPH09163848A (en) | 1995-12-15 | 1995-12-15 | Blade for bush slasher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34782495A JPH09163848A (en) | 1995-12-15 | 1995-12-15 | Blade for bush slasher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09163848A true JPH09163848A (en) | 1997-06-24 |
Family
ID=18392852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34782495A Pending JPH09163848A (en) | 1995-12-15 | 1995-12-15 | Blade for bush slasher |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09163848A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011000015A (en) * | 2009-06-17 | 2011-01-06 | Fujii Toshiko | Cutting blade |
| JP2015223149A (en) * | 2014-05-29 | 2015-12-14 | 株式会社ハウスビーエム | Rotating plate of cutter for brushcutter |
| JP2020022423A (en) * | 2018-08-08 | 2020-02-13 | 株式会社トリガー | Chip saw for mowing |
-
1995
- 1995-12-15 JP JP34782495A patent/JPH09163848A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011000015A (en) * | 2009-06-17 | 2011-01-06 | Fujii Toshiko | Cutting blade |
| JP2015223149A (en) * | 2014-05-29 | 2015-12-14 | 株式会社ハウスビーエム | Rotating plate of cutter for brushcutter |
| JP2020022423A (en) * | 2018-08-08 | 2020-02-13 | 株式会社トリガー | Chip saw for mowing |
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