JP6883833B2 - Rotary cutting blade for brush cutter - Google Patents

Rotary cutting blade for brush cutter Download PDF

Info

Publication number
JP6883833B2
JP6883833B2 JP2016136558A JP2016136558A JP6883833B2 JP 6883833 B2 JP6883833 B2 JP 6883833B2 JP 2016136558 A JP2016136558 A JP 2016136558A JP 2016136558 A JP2016136558 A JP 2016136558A JP 6883833 B2 JP6883833 B2 JP 6883833B2
Authority
JP
Japan
Prior art keywords
cutting blade
cord
rotary cutting
outer peripheral
main body
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
JP2016136558A
Other languages
Japanese (ja)
Other versions
JP2018007568A (en
Inventor
雄一郎 眞鍋
雄一郎 眞鍋
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.)
MARUNAKA,LTD.
Original Assignee
MARUNAKA,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 MARUNAKA,LTD. filed Critical MARUNAKA,LTD.
Priority to JP2016136558A priority Critical patent/JP6883833B2/en
Publication of JP2018007568A publication Critical patent/JP2018007568A/en
Application granted granted Critical
Publication of JP6883833B2 publication Critical patent/JP6883833B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Harvester Elements (AREA)

Description

本発明は、刈払機用の回転刈刃に関する。 The present invention relates to a rotary cutting blade for a brush cutter.

動力源たるエンジンまたはモータが出力する回転駆動力を回転刈刃に伝達してこれを回転させ、その回転刈刃により雑草等を薙ぎ払う手作業用の刈払機が公知である（例えば、下記特許文献を参照）。 A manual brush cutter is known in which a rotary driving force output from an engine or a motor as a power source is transmitted to a rotary cutting blade to rotate the rotary cutting blade, and the rotary cutting blade is used to remove weeds and the like (for example, the following patent documents). See).

一般に、刈払機に用いられる回転刈刃は、平らな円板状をなしており、その外周縁に沿って刃が形成されている。雑草等を刈る際には、回転刈刃を傾斜させ、刃先を斜め下方に向けた状態で雑草等の中に侵入させる。ある一定の領域の雑草等を刈るためには、作業者が刈払機のハンドルを把持し、主管を左右に振ってその先端に装着された回転刈刃を左右に往復移動させるが、回転刈刃が左方に移動するときと右方に移動するときとでは、回転刈刃の傾斜方向を変える必要が生じる。つまり、作業者は、主管を左右に振りながら、なおかつ刈払機の姿勢を揺動させる操作を行うことを強制され、老人その他の体力の乏しい者にとって負担が大きいと言えた。 Generally, the rotary cutting blade used in a brush cutter has a flat disk shape, and the blade is formed along the outer peripheral edge thereof. When cutting weeds, etc., the rotary cutting blade is tilted and the cutting edge is directed diagonally downward to invade the weeds, etc. In order to mow weeds in a certain area, the operator grasps the handle of the brush cutter and shakes the main pipe left and right to move the rotary cutting blade attached to the tip to the left and right. It becomes necessary to change the tilting direction of the rotary cutting blade depending on whether the blade moves to the left or to the right. In other words, it can be said that the worker is forced to perform an operation of swinging the posture of the brush cutter while swinging the main pipe to the left and right, which is a heavy burden for the elderly and other people with poor physical strength.

特開２０１４−１１７２３４号公報Japanese Unexamined Patent Publication No. 2014-117234

本発明は、刈払機を使用して雑草等を刈る作業者の負担の軽減を図ることを所期の目的としている。 An object of the present invention is to reduce the burden on workers who mow weeds and the like using a brush cutter.

上述した課題を解決するべく、本発明では、外周縁に沿って刃が形成されている刈刃本体の内周部が、基体の固定部に固定され、前記刈刃本体の外周部が、径方向の外方に向かうにつれて一貫して下方に偏倚するように傾斜しており、前記基体の固定部の上面から上方に突き出すようにコード取付部が設けられ、そのコード取付部に先端部が前記刃よりも径方向の外方に突出するコードが取り付けられるものであり、前記固定部の上面が前記刈刃本体の上面よりも上方に離間して浮いた位置にある刈払機用の回転刈刃を構成した。 In order to solve the above-mentioned problems, in the present invention, the inner peripheral portion of the cutting blade main body in which the blade is formed along the outer peripheral edge is fixed to the fixing portion of the substrate, and the outer peripheral portion of the cutting blade main body has a diameter. It is inclined so as to be consistently biased downward as it goes outward in the direction, and a cord attachment portion is provided so as to protrude upward from the upper surface of the fixed portion of the substrate, and the tip portion is provided on the cord attachment portion. A cord that protrudes outward in the radial direction from the blade is attached, and the rotary cutting blade for a brush cutter is in a position where the upper surface of the fixed portion floats above the upper surface of the cutting blade main body. Was configured.

前記刈刃本体における外周部よりも内方の部位の下面側に位置する前記基体の下面に、周方向に沿って拡張し前記外周部よりも下方に突出する接地部が設けられていれば、刈刃の刃先が地面に接するよりも先に接地部が地面に接することとなるため、刃先が地面に衝突して損耗することを防止できる。 If a ground contact portion that expands along the circumferential direction and projects downward from the outer peripheral portion is provided on the lower surface of the substrate located on the lower surface side of the portion inside the outer peripheral portion of the cutting blade main body. Since the ground contact portion comes into contact with the ground before the cutting edge of the cutting blade comes into contact with the ground, it is possible to prevent the cutting edge from colliding with the ground and being worn.

前記刈刃本体の上面側に、先端部が前記刃よりも径方向の外方に突出するコードを取り付けるためのコード取付部が設けられていれば、刈払機を使用して雑草等を刈る作業時に、刈刃とコードとを併用することが可能となり、刈刃の刃先がブロック塀やフェンス、建築構造物の壁等に衝突するおそれが低減する。 If a cord attachment portion for attaching a cord whose tip portion protrudes outward in the radial direction from the blade is provided on the upper surface side of the cutting blade body, a work of cutting weeds or the like using a brush cutter. Occasionally, the cutting blade and cord can be used together, reducing the risk of the cutting blade tip colliding with a block wall, fence, wall of a building structure, or the like.

その上で、前記コード取付部に貫通孔が穿たれる一方、当該コード取付部に取り付けられるコードの基端部に前記貫通孔の内径よりも拡張した抜け止めが設けられていれば、当該コードの先端部をコード取付部の貫通孔に径方向の内方から外方に向けて挿通することで、簡便にコードを回転刈刃に対して取り付けることができる。 On top of that, if a through hole is formed in the cord mounting portion, and a retaining hole is provided at the base end portion of the cord attached to the cord mounting portion, which is wider than the inner diameter of the through hole, the cord is provided. The cord can be easily attached to the rotary cutting blade by inserting the tip portion of the cord into the through hole of the cord attachment portion from the inside to the outside in the radial direction.

本発明によれば、刈払機を使用して雑草等を刈る作業者の負担の軽減を図り得る。 According to the present invention, it is possible to reduce the burden on the operator who cuts weeds and the like by using a brush cutter.

本発明の一実施形態の回転刈刃の適用対象となる刈払機の一例を示す斜視図。The perspective view which shows an example of the brush cutter to which the rotary cutting blade of one Embodiment of this invention is applied. 同実施形態の回転刈刃を上面側から見た斜視図。A perspective view of the rotary cutting blade of the same embodiment as viewed from the upper surface side. 同実施形態の回転刈刃の平面図。The plan view of the rotary cutting blade of the same embodiment. 同実施形態の回転刈刃を下面側から見た斜視図。A perspective view of the rotary cutting blade of the same embodiment as viewed from the lower surface side. 同実施形態の回転刈刃の底面図。Bottom view of the rotary cutting blade of the same embodiment. 同実施形態の回転刈刃のVI−VI線縦断面図。VI-VI line vertical cross-sectional view of the rotary cutting blade of the same embodiment.

本発明の一実施形態を、図面を参照して説明する。図１に、本実施形態の回転刈刃１の適用対象となる、既知の刈払機の一例を示している。図示例の刈払機は、動力源となるエンジンまたはモータ２と、エンジンまたはモータ２が出力する回転駆動力を回転刈刃１に伝達するための伝達機構を構成するクラッチケース３、主管４及びギヤケース５と、ギヤケース５に連結した回転刈刃１と、主管４に固定したハンドル６とを具備する。 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an example of a known brush cutter to which the rotary cutting blade 1 of the present embodiment is applied. The brush cutter in the illustrated example includes an engine or a motor 2 as a power source, and a clutch case 3, a main pipe 4, and a gear case that constitute a transmission mechanism for transmitting a rotational driving force output by the engine or the motor 2 to the rotary cutting blade 1. A rotary cutting blade 1 connected to a gear case 5 and a handle 6 fixed to a main pipe 4 are provided.

クラッチケース３は、エンジンまたはモータ２から入力される駆動力を伝達するクラッチを内包する。主管４は、エンジンまたはモータ２からクラッチを介して供給される駆動力により軸心回りに回転する駆動軸を内包する。ギヤケース５は、駆動軸に従動して回転刈刃１を回転駆動するギヤを内包する。回転刈刃１は、刈払機のギヤケース５に対して脱着可能である。ハンドル６には、エンジンまたはモータ２が出力する駆動力を増減させるために操作されるスロットルレバー７が付随する。 The clutch case 3 includes a clutch that transmits a driving force input from the engine or the motor 2. The main pipe 4 includes a drive shaft that rotates around an axis by a driving force supplied from the engine or the motor 2 via a clutch. The gear case 5 includes a gear that drives the rotary cutting blade 1 to rotate according to the drive shaft. The rotary cutting blade 1 is removable from the gear case 5 of the brush cutter. The handle 6 is accompanied by a throttle lever 7 that is operated to increase or decrease the driving force output by the engine or the motor 2.

図２ないし図６に、本実施形態の刈払機用の回転刈刃１を示す。この回転刈刃１は、外周縁に沿って多数のチップ付きの刃（チップソー）が形成された刈刃本体１１と、刈刃本体１１の内周側にあってその中心部位に刈払機のギヤケース５と連結するための連結部１２３を有した基体１２とを備える。 2 to 6 show a rotary cutting blade 1 for a brush cutter according to the present embodiment. The rotary cutting blade 1 has a cutting blade main body 11 in which a large number of blades (tip saws) with tips are formed along the outer peripheral edge, and a gear case of a brush cutter on the inner peripheral side of the cutting blade main body 11 at the center thereof. A base 12 having a connecting portion 123 for connecting with 5 is provided.

刈刃本体１１は、内部が中空な平面視略円環状の、例えば金属製の部材である。図６に示しているように、刈刃本体１１の外周部１１１は、切頭円錐面状をなすように、回転刈刃１の径方向の外方に向かって斜め下向きに延びている。換言すれば、刈刃本体１１の外周部１１１は、径方向に沿って外方に向かうにつれて、回転刈刃１の回転中心軸Ａに対して平行な下方に偏倚するように傾斜している。 The cutting blade main body 11 is, for example, a metal member having a hollow inside and a substantially annular shape in a plan view. As shown in FIG. 6, the outer peripheral portion 111 of the cutting blade main body 11 extends obliquely downward in the radial direction of the rotary cutting blade 1 so as to form a conical face. In other words, the outer peripheral portion 111 of the cutting blade main body 11 is inclined downward in parallel with the rotation center axis A of the rotary cutting blade 1 as it goes outward along the radial direction.

基体１２は、例えば硬質樹脂成形品であり、刈刃本体１１の内周部１１２が固定される固定部１２１と、固定部１２１の内側で下方に膨出した接地部１２２と、接地部１２２の内側で上方に突出した連結部１２３とを有する。固定部１２１は、平面視幅の細い円環状をなし、刈刃本体１１の内周部１１２に上面側から接する。刈刃本体１１の下面側には、平面視固定部１２１と同等の幅の細い円環状の固定部材１３を配置する。固定部材１３もまた、例えば硬質樹脂成形品である。そして、基体１２の固定部１２１と固定部材１３とで刈刃本体１１の内周部１１２を上下から挟み、その状態で基体１２の固定部１２１、刈刃本体１１の内周部１１２及び固定部材１３を貫通するボルト１４１をナット１４２に螺合させて緊締せしめることで、刈刃本体１１及び固定部材１３を基体１２に固着している。 The base 12 is, for example, a hard resin molded product, and has a fixing portion 121 to which the inner peripheral portion 112 of the cutting blade main body 11 is fixed, a grounding portion 122 that bulges downward inside the fixing portion 121, and a grounding portion 122. It has a connecting portion 123 that protrudes upward on the inside. The fixed portion 121 forms an annular shape having a narrow plan view width, and is in contact with the inner peripheral portion 112 of the cutting blade main body 11 from the upper surface side. On the lower surface side of the cutting blade main body 11, an annular fixing member 13 having a width equivalent to that of the plan view fixing portion 121 is arranged. The fixing member 13 is also, for example, a hard resin molded product. Then, the inner peripheral portion 112 of the cutting blade main body 11 is sandwiched between the fixing portion 121 and the fixing member 13 of the base 12 from above and below, and in that state, the fixing portion 121 of the base 12, the inner peripheral portion 112 of the cutting blade main body 11, and the fixing member The cutting blade main body 11 and the fixing member 13 are fixed to the base 12 by screwing the bolt 141 penetrating the 13 into the nut 142 and tightening the bolt 141.

基体１２の接地部１２２は、刈刃本体１１の刃が地面に衝突することを抑止して刃を損耗から保護する目的で設けられており、図６に示すように、刈刃本体１１の外周部１１１さらには外周縁の刃先よりも下方に突出している。接地部１２２は、回転刈刃１の周方向（回転方向、径方向に対して直交する方向）に沿って拡張している。図５中、接地部１２２の下底面を、網点（トーン）を付して表している。 The ground contact portion 122 of the base 12 is provided for the purpose of preventing the blade of the cutting blade main body 11 from colliding with the ground and protecting the blade from wear. As shown in FIG. 6, the outer periphery of the cutting blade main body 11 is provided. The portion 111 and further protrudes downward from the cutting edge of the outer peripheral edge. The ground contact portion 122 extends along the circumferential direction (direction orthogonal to the rotation direction and the radial direction) of the rotary cutting blade 1. In FIG. 5, the lower bottom surface of the ground contact portion 122 is represented by adding halftone dots (tones).

基体１２の連結部１２３には、これを上下方向に貫通する軸孔１２４を穿ち設けており、この軸孔を利用して回転刈刃１を刈払機のギヤケース５に脱着可能に連結することが可能となっている。 The connecting portion 123 of the base 12 is provided with a shaft hole 124 penetrating the shaft hole 124 in the vertical direction, and the rotary cutting blade 1 can be detachably connected to the gear case 5 of the brush cutter using this shaft hole. It is possible.

基体１２の固定部１２１の上面には、樹脂製の細いコード１５、特にナイロンコードを取り付けるためのコード取付部１２５が存在している。コード１５は、刈刃本体１１の刃とともに雑草等を薙ぎ払う働きをする。本実施形態では、一対のコード取付部１２５を設けており、各コード取付部１２５に一本ずつ、計二本のコード１５を回転刈刃１に取り付けることが可能である。 On the upper surface of the fixing portion 121 of the substrate 12, there is a thin resin cord 15, particularly a cord attaching portion 125 for attaching a nylon cord. The cord 15 works together with the blade of the cutting blade main body 11 to remove weeds and the like. In the present embodiment, a pair of cord attachment portions 125 are provided, and a total of two cords 15 can be attached to the rotary cutting blade 1, one for each cord attachment portion 125.

コード取付部１２５は、固定部１２１から上方に突き出すように基体１２に一体成形してある。そして、コード取付部１２５には、回転刈刃１の径方向に沿ってこれを貫通する貫通孔１２６を穿ち設けている。 The cord attachment portion 125 is integrally molded with the base 12 so as to protrude upward from the fixing portion 121. The cord attachment portion 125 is provided with a through hole 126 that penetrates the rotary cutting blade 1 along the radial direction.

他方、コード１５には、その基端部に、例えば金属製の抜け止め１５１をかしめることで固着している。抜け止め１５１は、コード取付部１２５に形成した貫通孔１２６の内径よりも大きく拡張する鍔を有している。コード１５を基体１２に取り付ける際には、コード１５の先端部をコード取付部１２５の貫通孔１２６に径方向の内方から外方に向かって挿入する。結果、図６に示すように、抜け止め１５１の鍔がコード取付部１２５の貫通孔１２６の周縁に係合する。図３、図５及び図６に示しているように、回転刈刃１に取り付けたコード１５の先端部は、刈刃本体１１の刃先よりも径方向の外方に突出する。回転刈刃１が回転するとき、コード１５には遠心力が作用するが、抜け止め１５１の鍔とコード取付部１２５との係合を通じて、コード１５がコード取付部１２５から脱出することが阻まれる。 On the other hand, the cord 15 is fixed to the base end portion thereof by, for example, crimping a metal retaining member 151. The retaining 151 has a collar that expands larger than the inner diameter of the through hole 126 formed in the cord mounting portion 125. When the cord 15 is attached to the substrate 12, the tip of the cord 15 is inserted into the through hole 126 of the cord attachment portion 125 from the inside to the outside in the radial direction. As a result, as shown in FIG. 6, the collar of the retaining 151 engages with the peripheral edge of the through hole 126 of the cord mounting portion 125. As shown in FIGS. 3, 5 and 6, the tip of the cord 15 attached to the rotary cutting blade 1 projects outward in the radial direction from the cutting edge of the cutting blade main body 11. When the rotary cutting blade 1 rotates, a centrifugal force acts on the cord 15, but the cord 15 is prevented from escaping from the cord attachment portion 125 through the engagement between the collar of the retaining 151 and the cord attachment portion 125. ..

基体１２からコード１５を取り外すには、コード１５を径方向の内方に向かって引っ張り、コード取付部１２５の貫通孔１２６から引き抜けばよい。 To remove the cord 15 from the substrate 12, the cord 15 may be pulled inward in the radial direction and pulled out from the through hole 126 of the cord mounting portion 125.

本実施形態では、外周縁に沿って刃が形成されている刈刃本体１１の外周部１１１が、径方向の外方に向かうにつれて下方に偏倚するように傾斜している刈払機用の回転刈刃１を構成した。 In the present embodiment, the outer peripheral portion 111 of the cutting blade main body 11 in which the blade is formed along the outer peripheral edge is inclined downward so as to be deflected outward in the radial direction. The blade 1 was constructed.

本実施形態によれば、回転刈刃１の刃先が自然と斜め下方を向くこととなる。このため、雑草等を刈る作業時に敢えて回転刈刃１を傾斜させるように刈払機の姿勢を揺動させる必要がなく、刈払機を操作する作業者の負担を軽減することが可能となる。即ち、従来の回転刈刃を装備した刈払機を使用して作業を行う場合には、刈刃を斜めに振るように操作しなければならなかったのに対し、本実施形態の回転刈刃１を装備した刈払機を使用して作業を行う場合には、刈刃１を地面に沿わせるように、いわば地面を撫でるように操作することで、簡便に雑草等を刈ることができる。 According to this embodiment, the cutting edge of the rotary cutting blade 1 naturally faces diagonally downward. Therefore, it is not necessary to swing the posture of the brush cutter so as to intentionally incline the rotary cutting blade 1 during the work of cutting weeds and the like, and it is possible to reduce the burden on the operator who operates the brush cutter. That is, when the work is performed using a brush cutter equipped with a conventional rotary cutting blade, the cutting blade must be operated so as to swing diagonally, whereas the rotary cutting blade 1 of the present embodiment is used. When working with a brush cutter equipped with the above, weeds and the like can be easily cut by operating the cutting blade 1 so as to be along the ground, so to speak, as if stroking the ground.

前記刈刃本体１１における外周部１１１よりも内方の部位の下面側に、周方向に沿って拡張し前記外周部１１１よりも下方に突出する接地部１２２を設けているため、回転刈刃１の刃先が地面に接するよりも先に接地部１２２が地面に接することとなり、刃先が地面に衝突して損耗することを予防できる。 Since a ground contact portion 122 that extends along the circumferential direction and projects downward from the outer peripheral portion 111 is provided on the lower surface side of the portion of the cutting blade main body 11 that is inward from the outer peripheral portion 111, the rotary cutting blade 1 The ground contact portion 122 comes into contact with the ground before the cutting edge of the blade comes into contact with the ground, and it is possible to prevent the cutting edge from colliding with the ground and being worn.

加えて、前記刈刃本体１１の上面側に、先端部が前記刃よりも径方向の外方に突出するコード１５を取り付けるためのコード取付部１２５を設けており、回転刈刃１が刃とコード１５とを両備するため、刃ではなくコード１５によって雑草等を刈ることができ、刃がブロック塀やフェンス、建築構造物の壁等に衝突するおそれも低減する。 In addition, a cord attachment portion 125 for attaching a cord 15 whose tip portion protrudes outward in the radial direction from the blade is provided on the upper surface side of the cutting blade main body 11, and the rotary cutting blade 1 is a blade. Since both cords 15 are provided, weeds and the like can be cut by the cord 15 instead of the blade, and the possibility that the blade collides with a block wall, a fence, a wall of a building structure, or the like is reduced.

その上で、前記コード取付部１２５には貫通孔１２６を穿つ一方、当該コード取付部１２５に取り付けられるコード１５の基端部には前記貫通孔１２６の内径よりも拡張した抜け止め１５１を設けており、コード取付部１２５へのコード１５の取り付けや、コード取付部１２５からのコード１５の取り外しが簡便なものとなる。従って、コード１５の交換が容易であり、不要ならばコード１５を回転刈刃１から撤去することもできる。 On that basis, the cord attachment portion 125 is provided with a through hole 126, while the base end portion of the cord 15 attached to the cord attachment portion 125 is provided with a retaining 151 that is wider than the inner diameter of the through hole 126. Therefore, it is easy to attach the cord 15 to the cord attachment portion 125 and to remove the cord 15 from the cord attachment portion 125. Therefore, the cord 15 can be easily replaced, and the cord 15 can be removed from the rotary cutting blade 1 if unnecessary.

なお、本発明は以上に詳述した実施形態に限られるものではない。各部の具体的構成は、本発明の趣旨を逸脱しない範囲で種々変形が可能である。 The present invention is not limited to the embodiments described in detail above. The specific configuration of each part can be variously modified without departing from the spirit of the present invention.

１…回転刈刃
１１…刈刃本体
１１１…外周部
１２２…接地部
１２５…コード取付部
１２６…貫通孔
１５…コード
１５１…抜け止め 1 ... Rotary cutting blade 11 ... Cutting blade body 111 ... Outer circumference 122 ... Grounding part 125 ... Cord mounting part 126 ... Through hole 15 ... Cord 151 ... Preventing

Claims (3)

外周縁に沿って刃が形成されている刈刃本体の内周部が、基体の固定部に固定され、
前記刈刃本体の外周部が、径方向の外方に向かうにつれて一貫して下方に偏倚するように傾斜しており、
前記基体の固定部の上面から上方に突き出すようにコード取付部が設けられ、そのコード取付部に先端部が前記刃よりも径方向の外方に突出するコードが取り付けられるものであり、
前記固定部の上面が前記刈刃本体の上面よりも上方に離間して浮いた位置にある刈払機用の回転刈刃。 The inner peripheral portion of the cutting blade body in which the blade is formed along the outer peripheral edge is fixed to the fixed portion of the substrate.
The outer peripheral portion of the cutting blade body is inclined so as to be consistently biased downward as it goes outward in the radial direction.
A cord attachment portion is provided so as to protrude upward from the upper surface of the fixed portion of the substrate, and a cord whose tip portion protrudes outward in the radial direction from the blade is attached to the cord attachment portion .
A rotary cutting blade for a brush cutter in a position where the upper surface of the fixed portion floats above the upper surface of the cutting blade main body. 前記刈刃本体における外周部よりも内方の部位の下面側に位置する前記基体の下面に、周方向に沿って拡張し前記外周部よりも下方に突出する接地部が設けられている請求項１記載の回転刈刃。 A claim that a ground contact portion that extends along the circumferential direction and projects downward from the outer peripheral portion is provided on the lower surface of the substrate located on the lower surface side of a portion inner of the outer peripheral portion of the cutting blade main body. The rotary cutting blade according to 1. 前記コード取付部には貫通孔が穿たれる一方、当該コード取付部に取り付けられるコードの基端部には前記貫通孔の内径よりも拡張した抜け止めが設けられている請求項１または２記載の回転刈刃。 The cord attachment portion is provided with a through hole, while the base end portion of the cord attached to the cord attachment portion is provided with a retaining hole that is wider than the inner diameter of the through hole. Rotary cutting blade.
JP2016136558A 2016-07-11 2016-07-11 Rotary cutting blade for brush cutter Active JP6883833B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016136558A JP6883833B2 (en) 2016-07-11 2016-07-11 Rotary cutting blade for brush cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016136558A JP6883833B2 (en) 2016-07-11 2016-07-11 Rotary cutting blade for brush cutter

Publications (2)

Publication Number Publication Date
JP2018007568A JP2018007568A (en) 2018-01-18
JP6883833B2 true JP6883833B2 (en) 2021-06-09

Family

ID=60993327

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016136558A Active JP6883833B2 (en) 2016-07-11 2016-07-11 Rotary cutting blade for brush cutter

Country Status (1)

Country Link
JP (1) JP6883833B2 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000048449A1 (en) * 1999-02-22 2000-08-24 John Charles Castleman Rotary blade for trimmers and brush cutters
JP2000333524A (en) * 1999-05-25 2000-12-05 Ise Noki:Kk Rotating blade
JP3128859U (en) * 2006-11-09 2007-01-25 藤井 逸子 Mowing blade
JP4669488B2 (en) * 2006-11-24 2011-04-13 株式会社北村製作所 Brush cutter grounding body and brush cutter
JP6159558B2 (en) * 2012-07-09 2017-07-05 伊藤レーシングサービス株式会社 Mowing blade and mower
JP6077818B2 (en) * 2012-10-16 2017-02-08 株式会社ハートフル・ジャパン Easy-to-remove rotary blade for brush cutter
KR101535279B1 (en) * 2014-10-22 2015-07-09 주식회사 성진텍 Agricultural cutter blade

Also Published As

Publication number Publication date
JP2018007568A (en) 2018-01-18

Similar Documents

Publication Publication Date Title
CN102655736B (en) Brush saw and protective cover thereof
EP1997364B1 (en) Ground surface slide guide of lawn mower and lawn mower
JP5841891B2 (en) Working machine
JP5525667B1 (en) Rotating body, brush cutter and mowing method
US20170142986A1 (en) Dehiding tool
JP3737674B2 (en) Cutting blade safety cover for brush cutter
JP2013255491A (en) Grass cutting blade for bush cutter
JP6883833B2 (en) Rotary cutting blade for brush cutter
JP4550925B2 (en) Brush cutter grounding body and brush cutter
JP4638174B2 (en) Equipment for portable tools such as brush cutters
JP4573245B2 (en) Tangle prevention structure in mower
KR101864945B1 (en) A lawn mower blade having a blade guide
JP2007222148A (en) Cutter for grass mowing
JP3876287B2 (en) Grounding disk structure of brush cutter
JP6143328B2 (en) Mounting structure of linear cutter and grounding body of brush cutter provided with the same
KR100696177B1 (en) Magic flying cutter
JP2011045266A (en) Joint structure of horticultural tool, and horticultural tool equipped with the same
KR20050099461A (en) Knives for a mowing machine
JP3117704U (en) Blade in mower
JPS6140712A (en) Counteraction preventing apparatus of mower
JP5824562B1 (en) Weeding cutter
KR200253772Y1 (en) Change type rotary knife of a brush cutter
KR200494874Y1 (en) Lawn mower blade
KR20160084893A (en) Bush cutting machine
JP2016140274A (en) Nylon cord cutter and working machine using the same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20190618

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20200225

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20200228

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200420

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20200915

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20201110

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

Effective date: 20210427

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20210428

R150 Certificate of patent or registration of utility model

Ref document number: 6883833

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250