JP4849185B1 - Brush cutter - Google Patents

Brush cutter Download PDF

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JP4849185B1
JP4849185B1 JP2010201922A JP2010201922A JP4849185B1 JP 4849185 B1 JP4849185 B1 JP 4849185B1 JP 2010201922 A JP2010201922 A JP 2010201922A JP 2010201922 A JP2010201922 A JP 2010201922A JP 4849185 B1 JP4849185 B1 JP 4849185B1
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cutting blade
support rod
brush cutter
grass
attached
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JP2012055237A (en
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憲雄 和波
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憲雄 和波
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Abstract

【課題】解決しようとする問題点は、刈刃を地面と平行に左右に移動させるだけでは刈刃の上面に刈草が残ることと、その刈草が原因して刈刃の上面中心部に刈草が巻き付くことにある。
【解決手段】刈払機の駆動源に基端部が取り付けられた支持ロッドの先端に刈刃が取り付けられ、支持ロッド内を挿通した動力伝達手段を介して前記駆動源の動力が前記刈刃に伝達される刈払機であって、支持ロッドの延長線上における刈刃の刈刃切欠の近傍に達する鶏冠状の突起を刈刃表面と小許の隙間を介して支持ロッドに設けることにより、刈刃を地面と平行に左右に移動させるだけで刈草を振るい落とすことができ、刈刃の上面中心部に刈草が巻き付くことを防止できる。
【選択図】図１The problem to be solved is that the mowing grass remains on the upper surface of the cutting blade only by moving the cutting blade to the left and right in parallel with the ground, and the mowing grass is caused by the mowing grass at the center of the upper surface of the cutting blade. There is to wrap.
A cutting blade is attached to a distal end of a support rod having a base end attached to a driving source of a brush cutter, and the power of the driving source is applied to the cutting blade through a power transmission means inserted through the support rod. A brush cutter to be transmitted, and by providing the support rod with a crown-shaped projection reaching the vicinity of the cutting blade notch of the cutting blade on the extension line of the supporting rod through the clearance between the cutting blade surface and the allowance, The grass can be shaken off simply by moving the blade to the left and right in parallel with the ground, and the grass can be prevented from being wrapped around the center of the upper surface of the blade.
[Selection] Figure 1

Description

本発明は、刈払機に関するものである。   The present invention relates to a brush cutter.

刈払機は、草等の上を左右に振りながら草等を刈り取る農具である。刈払機は、刈刃を地面と平行に左右に移動させるだけでは刈草が刈刃上面に残り、刈刃が回転するために刈刃の上面中心部に刈草が巻き付き、その都度エンジンを停止して巻き付いた刈草を除去しなければならず、作業効率が悪いという問題点があった。   A brush cutter is a farming tool that cuts grass while swinging left and right on the grass. In the brush cutter, just by moving the cutting blade to the left and right in parallel with the ground, the mowing grass remains on the upper surface of the cutting blade. There was a problem that the mowing grass had to be removed and the work efficiency was poor.

この対策として、刈刃上面に残った刈草を刈刃をやや傾斜させて刈刃の上面で押し払うように左右に移動させる必要があったが、刈払機を左右に振る度に手に持ったハンドルを左右上下させる必要があり、肩こりの一因となっていた。   As a countermeasure, it was necessary to move the mowing grass left on the upper surface of the cutting blade to the left and right so that the cutting blade was slightly tilted and pushed away from the upper surface of the cutting blade. It was necessary to move the handle left and right and up and down, which contributed to stiff shoulders.

特開２００８−１４２０７２号公報JP 2008-142072 A

本発明が解決しようとする問題点は、刈刃を地面と平行に左右に移動させるだけでは刈刃の上面に刈草が残ることと、その刈草が原因して刈刃の上面中心部に刈草が巻き付くことにある。   The problem to be solved by the present invention is that the mowing grass remains on the upper surface of the cutting blade only by moving the cutting blade to the left and right in parallel with the ground, and the mowing grass is caused by the mowing grass at the center of the upper surface of the cutting blade. There is to wrap.

本発明は、駆動源に基端部が取り付けられた支持ロッドの先端に刈刃が取り付けられ、支持ロッド内を挿通した動力伝達手段を介して前記駆動源の動力が前記刈刃に伝達される刈払機であって、支持ロッドの延長線上における刈刃の刈刃切欠の近傍に達する突起を刈刃表面と隙間を介して支持ロッドに設けた刈払機であって、前記突起は垂直部のみの板状に形成されていて、突起の下面は刈払機の形状に対応した形状になっており、上面は先端から後端に向かって滑らかに上り傾斜になっていて、一部に平坦部が形成されているものであり、前記突起は、刈刃表面と刈刃が回転可能な隙間を介して支持ロッドに設けたことを特徴とする。 According to the present invention, a cutting blade is attached to the tip of a support rod having a base end attached to the drive source, and the power of the drive source is transmitted to the cutting blade via power transmission means inserted through the support rod. a brush cutter, a brush cutter provided with a projection that reaches the vicinity of the cutting blade notch of the cutting blade to the support rod through the cutting blade surface and the gap in the extension of the support rod, only the projecting vertical portion The lower surface of the protrusion is shaped to correspond to the shape of the brush cutter, the upper surface is smoothly inclined upward from the front end to the rear end, and a flat portion is partly formed The protrusion is formed on the support rod through a gap that allows the cutting blade surface and the cutting blade to rotate.

本発明の刈払機は、駆動源に基端部が取り付けられた支持ロッドの先端に刈刃が取り付けられ、支持ロッド内を挿通した動力伝達手段を介して前記駆動源の動力が前記刈刃に伝達される刈払機であって、支持ロッドの延長線上における刈刃の刈刃切欠の近傍に達する突起を刈刃表面と隙間を介して支持ロッドに設けた刈払機であって、前記突起は垂直部のみの板状に形成されていて、突起の下面は刈払機の形状に対応した形状になっており、上面は先端から後端に向かって滑らかに上り傾斜になっていて、一部に平坦部が形成されているものであり、前記突起は、刈刃表面と刈刃が回転可能な隙間を介して支持ロッドに設けたことを特徴とするものであるから、刈られた刈草は鶏冠状の突起に保持されるが、刈刃を地面と平行に左右に移動させるだけでその刈草を振るい落とすことができるという効果がある。 In the brush cutter according to the present invention, a cutting blade is attached to the tip of a support rod having a base end attached to a drive source, and the power of the drive source is applied to the cutting blade through power transmission means inserted through the support rod. a brush cutter that is transmitted, a brush cutter provided with a projection that reaches the vicinity of the cutting blade notch of the cutting blade to the support rod through the cutting blade surface and the gap in the extension of the support rod, said projections It is formed in a plate shape with only the vertical part, the lower surface of the projection is shaped to correspond to the shape of the brush cutter, the upper surface is smoothly inclined upward from the front end to the rear end, and partly A flat portion is formed, and the protrusion is provided on the support rod through a gap where the cutting blade surface and the cutting blade can rotate. Although it is held by the coronal protrusion, the cutting blade is moved to the left and right parallel to the ground. There is an effect that it is possible to shake off only in the mowed grass that.

図１は本発明の刈込機の要部平面図である。FIG. 1 is a plan view of an essential part of a trimming machine according to the present invention. 図２は同上の刈込機の要部断面図である。FIG. 2 is a cross-sectional view of the main part of the above-described trimming machine. 図３は同上の刈込機に取り付ける鶏冠状の突起の平面図である。FIG. 3 is a plan view of a chicken-crown-shaped protrusion attached to the above-described trimming machine. 図４は同上の刈込機に取り付ける鶏冠状の突起の正面図である。FIG. 4 is a front view of a chicken crown-shaped protrusion attached to the above-described trimming machine.

以下、本発明について、実施例の図示例とともに説明する。 Hereinafter, the present invention will be described together with illustrated examples of embodiments.

刈払機Kは、駆動源（図示せず）に基端部が取り付けられた支持ロッド１の先端に刈刃２が取り付けられ、支持ロッド１内を挿通した動力伝達手段（図示せず）を介して前記駆動源の動力が前記刈刃２に伝達されるものであって、支持ロッド１の延長線上における刈刃２の刈刃切欠３の近傍に達する鶏冠状の突起４が刈刃２表面と小許の隙間を介して支持ロッド１に設けられている。   In the brush cutter K, a cutting blade 2 is attached to the distal end of a support rod 1 having a base end attached to a drive source (not shown), and power transmission means (not shown) is inserted through the support rod 1. The power of the drive source is transmitted to the cutting blade 2, and a crown-shaped projection 4 reaching the vicinity of the cutting blade notch 3 of the cutting blade 2 on the extension line of the support rod 1 is formed on the cutting blade 2 surface. The support rod 1 is provided through a clearance.

刈刃２は、外周縁部に刈刃切欠３が形成され、チップ５を溶着したチップ刈刃６が形成されている。 The cutting blade 2 has a cutting blade notch 3 formed on the outer peripheral edge portion, and a chip cutting blade 6 to which a chip 5 is welded.

鶏冠状の突起４は、合成樹脂材で板状に形成されていて、下面は刈払機Kの形状に対応した形状になっており、上面は先端から後端に向かって滑らかに上り傾斜になっていて一部に平坦部７が形成されている。   The chicken-crown-shaped protrusion 4 is formed in a plate shape with a synthetic resin material, the lower surface has a shape corresponding to the shape of the brush cutter K, and the upper surface is smoothly inclined upward from the front end toward the rear end. The flat part 7 is formed in part.

鶏冠状の突起４は、支持ロッド１に複数のねじ８により着雑自在に螺着されている。ねじ８の頭をねじ穴９から突出させて着脱性を良くしている。 The chicken crown-shaped protrusion 4 is screwed to the support rod 1 by a plurality of screws 8 so as to be freely assembled. The head of the screw 8 is protruded from the screw hole 9 to improve detachability.

刈払刃１は、先端駆動軸１０にワッシャ１１を介してねじ１２で連結されている。先端駆動軸１０は、駆動軸（図示せず）にベベルギア（図示せず）を介して連結されている。   The brush cutting blade 1 is connected to the tip drive shaft 10 with a screw 12 via a washer 11. The tip drive shaft 10 is connected to a drive shaft (not shown) via a bevel gear (not shown).

鶏冠状の突起４と刈刃２表面との隙間は、なるべく狭い方が望ましく、実施例では１ミリメートルにしている。鶏冠状の突起４は、実施例では支持ロッド１の延長線上における刈刃２の刈刃切欠３から１０ミリメートルの位置に設けられている。   The gap between the chicken crown-shaped protrusion 4 and the surface of the cutting blade 2 is preferably as narrow as possible, and is 1 mm in the embodiment. In the embodiment, the chicken crown-shaped protrusion 4 is provided at a position 10 mm from the cutting blade notch 3 of the cutting blade 2 on the extension line of the support rod 1.

鶏冠状の突起４は、合成樹脂材で板状に形成したが、木質材で形成しても構わないし、刈草を保持し易くするために断面が凹状の円弧に形成しても構わない。   The chicken-crown-shaped protrusions 4 are formed in a plate shape with a synthetic resin material, but may be formed with a wood material, or may be formed with an arc having a concave cross section in order to facilitate holding the cut grass.

１ 支持ロッド
２ 刈刃
３ 刈刃切欠
４ 鶏冠状の突起 1 Support rod 2 Cutting blade 3 Cutting blade notch 4 Chicken crown-shaped protrusion

Claims (1)

駆動源に基端部が取り付けられた支持ロッドの先端に刈刃が取り付けられ、支持ロッド内を挿通した動力伝達手段を介して前記駆動源の動力が前記刈刃に伝達される刈払機であって、支持ロッドの延長線上における刈刃の刈刃切欠の近傍に達する突起を刈刃表面と隙間を介して支持ロッドに設けた刈払機であって、前記突起は垂直部のみの板状に形成されていて、突起の下面は刈払機の形状に対応した形状になっており、上面は先端から後端に向かって滑らかに上り傾斜になっていて、一部に平坦部が形成されているものであり、前記突起は、刈刃表面と刈刃が回転可能な隙間を介して支持ロッドに設けたことを特徴とする刈払機。 A brush cutter in which a cutting blade is attached to the tip of a support rod having a base end attached to a drive source, and the power of the drive source is transmitted to the cutting blade via power transmission means inserted through the support rod. Te, a projection that reaches the vicinity of the cutting blade notch of the cutting blade in the extension of the support rod a brush cutter provided on the support rod through the cutting blade surface and the gap, the projection is a plate-like only the vertical portion The lower surface of the protrusion is shaped to correspond to the shape of the brush cutter, the upper surface is smoothly inclined upward from the front end to the rear end, and a flat portion is formed in part. A brush cutter according to claim 1, wherein the protrusion is provided on the support rod through a gap where the cutting blade surface and the cutting blade can rotate.
JP2010201922A 2010-09-09 2010-09-09 Brush cutter Expired - Fee Related JP4849185B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH034506U (en) * 1989-06-06 1991-01-17
JPH1156062A (en) * 1997-08-25 1999-03-02 Tadakatsu Ogura Mowing device and mowing cover for mowing device
JP2000125637A (en) * 1998-10-27 2000-05-09 Ito Denki Kk Cutting edge sharpener for lawn and/or grass cutting blade
JP2009022200A (en) * 2007-07-19 2009-02-05 Kansui Tomoe Apparatus for preventing foreign matters from being caught in mower

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH034506U (en) * 1989-06-06 1991-01-17
JPH1156062A (en) * 1997-08-25 1999-03-02 Tadakatsu Ogura Mowing device and mowing cover for mowing device
JP2000125637A (en) * 1998-10-27 2000-05-09 Ito Denki Kk Cutting edge sharpener for lawn and/or grass cutting blade
JP2009022200A (en) * 2007-07-19 2009-02-05 Kansui Tomoe Apparatus for preventing foreign matters from being caught in mower

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