JP4683489B2

JP4683489B2 - Hedge trimmer

Info

Publication number: JP4683489B2
Application number: JP2006121981A
Authority: JP
Inventors: 晃宜久保田
Original assignee: 株式会社マキタ沼津
Priority date: 2006-04-26
Filing date: 2006-04-26
Publication date: 2011-05-18
Anticipated expiration: 2026-04-26
Also published as: JP2007289092A

Description

本発明は、長手方向に相互に重なり合うようにして延びる上刃及び下刃を往復運可能に支持するガイドバーを備えたヘッジトリマに関する。 The present invention relates to a hedge trimmer including a guide bar that reciprocally supports an upper blade and a lower blade extending so as to overlap each other in the longitudinal direction.

このようなガイドバーは、長尺な上刃及び下刃を支持するために、ガイドバーの一端部がヘッジトリマのケースに取り付けられており、また上刃及び下刃の撓みが小さくなるように、一般的に剛性の高い鉄系材料で形成されている。この鉄製ガイドバーは、重量が重いので、作業者に対して労力を増大させて疲労を強いる原因となっていた。 In order to support the long upper blade and the lower blade, such a guide bar has one end of the guide bar attached to the case of the hedge trimmer, and the upper blade and the lower blade are less bent. Generally, it is made of a highly rigid iron-based material. Since this iron guide bar is heavy, it has been a cause of increasing labor and forcing fatigue to the operator.

そこで、特許文献１及び特許文献２に記載されているように、ガイドバーを軽量金属で形成したものが提案されている。特許文献１に記載のガイドバーは、断面がＨ型に形成されて曲げ剛性を強化し、上刃とガイドバーとの間に長尺状のアッパープレートを介装して上刃とガイドバーとの摩耗を抑制している。 Therefore, as described in Patent Document 1 and Patent Document 2, a guide bar formed of a lightweight metal has been proposed. The guide bar described in Patent Document 1 has an H-shaped cross section to enhance bending rigidity, and a long upper plate is interposed between the upper blade and the guide bar. Suppress wear.

一方、特許文献２に記載のガイドバーは、断面が台形状であり、内部に長手方向に延びる空間部を形成して重量をより軽減している。上刃とガイドバーとの間には摩擦ブロックが介装され、この摩擦ブロックはガイドバーの長手方向に所定間隔を有してガイドバーに装着されて、上刃とガイドバーとが直接に接触する事態を防止して、ガイドバーの寿命の低下を防止している。 On the other hand, the guide bar described in Patent Document 2 has a trapezoidal cross section, and further reduces the weight by forming a space portion extending in the longitudinal direction inside. A friction block is interposed between the upper blade and the guide bar. The friction block is attached to the guide bar with a predetermined interval in the longitudinal direction of the guide bar, and the upper blade and the guide bar are in direct contact with each other. This prevents the life of the guide bar from being reduced.

このように、特許文献１及び２に記載のガイドバーにより、ヘッジトリマの軽量化が図られ、作業時における刈取部の変形が抑制されて、作業者の安全性や作業性を向上することができるようになっている。 As described above, the guide bar described in Patent Documents 1 and 2 can reduce the weight of the hedge trimmer, suppress the deformation of the cutting portion at the time of work, and improve the safety and workability of the operator. It is like that.

特開２００５−６５３４号公報JP 2005-6534 A 実用新案登録第３１０４３１４号公報Utility Model Registration No. 3104314

これら従来のヘッジトリマは、ガイドバーが軽金属材料で形成されているので、ガイドバーの軽量化を実現している一方、アッパープレートや摩擦ブロック等の新たな別部品が追加されて、ガイドバーの摩耗対策を図っている。この別部品の新たな追加は、ガイドバーの軽量化を無駄にし、ヘッジトリマ全体の重量軽減化を困難にするとともに、メンテナンス性を悪化する原因となる。このように従来のヘッジトリマの軽量化については、未だ解決されていないのが現状であり、軽量化したヘッジトリマの提供が望まれている。 In these conventional hedge trimmers, the guide bar is made of light metal material, so the weight of the guide bar is reduced, but new parts such as the upper plate and friction block are added to reduce the wear on the guide bar. Measures are being taken. The addition of this separate part wastes weight reduction of the guide bar, makes it difficult to reduce the weight of the entire hedge trimmer, and deteriorates maintainability. As described above, the current weight reduction of the conventional hedge trimmer has not been solved yet, and it is desired to provide a weighted hedge trimmer.

本発明は、このような要望に応えるものであり、ガイドバーの摩耗が抑制され且つメンテナンス性が良好であるとともに、軽量化が図られたヘッジトリマを提供することを目的とする。 The present invention meets such a demand, and an object of the present invention is to provide a hedge trimmer in which wear of a guide bar is suppressed, maintenance is good, and weight is reduced.

このような課題を解決するため、本発明は、長手方向に相互に重なり合うようにして延びる上刃及び下刃と、これら上刃及び下刃の基端側に配置された動力源（例えば、実施形態におけるエンジン５）と、動力源に接続されて該動力源の回転運動を直線運動に変換して上刃及び下刃の少なくともいずれかを往復駆動する運動変換機構と、該運動変換機構を収容するケース（例えば、実施形態におけるギアケース１０）に一端側が支持されて他端側が上刃の上方に位置して該上刃の長手方向に沿って延びて上刃及び下刃を支持するガイドバーとを備えるヘッジトリマにおいて、ガイドバーは、アルミニウム等の軽金属によって形成され、ガイドバーの少なくとも下面がメッキ処理されて上刃の上面に当接し、ガイドバーの下面及び上刃の上面の少なくともいずれかに凹凸を設け、ガイドバーの下面の刃部側の端部に面取り部を設け、凹凸を面取り部に連通して設け、ケースに収容された潤滑剤を、面取り部を介してガイドバーの下面及び上刃の上面に供給して、該ガイドバーの下面及び該上刃の上面を潤滑することを特徴とする In order to solve such a problem, the present invention relates to an upper blade and a lower blade extending so as to overlap each other in the longitudinal direction, and a power source (for example, an implementation) disposed on the base end side of the upper blade and the lower blade. An engine 5) in the form, a motion conversion mechanism connected to a power source and converting the rotational motion of the power source into a linear motion to reciprocally drive at least one of the upper blade and the lower blade, and the motion conversion mechanism A guide bar that is supported by a case (for example, the gear case 10 in the embodiment) and has the other end positioned above the upper blade and extending along the longitudinal direction of the upper blade to support the upper blade and the lower blade. in hedge trimmer with bets, guide bar is formed by a light metal such as aluminum, at least the lower surface of the guide bar is plating to contact with the upper surface of the upper blade, the guide bars of the upper surface of the lower surface and the upper blade At least one is provided with unevenness, a chamfered portion is provided at the edge of the lower surface of the guide bar on the blade portion side, the unevenness is provided in communication with the chamfered portion, and the lubricant contained in the case is passed through the chamfered portion. Supplying the lower surface of the guide bar and the upper surface of the upper blade to lubricate the lower surface of the guide bar and the upper surface of the upper blade

この発明によれば、アルミニウム等の軽金属によってガイドバーを形成するので、ガイドバーの軽量化を図ることができ、またガイドバーの少なくとも下面をメッキ処理して上刃の上面に当接することにより、別部品を介在することなくガイドバーの摩耗対策を図ることが可能となり、その結果、軽量化を実現するとともにメンテナンス性の良好なヘッジトリマを提供することができる。また、この発明によれば、ガイドバーの下面及び上刃の上面の少なくともいずれかに凹凸を設け、ケースに収容された潤滑剤をガイドバーの下面及び上刃の上面に供給することにより、ガイドバー下面及び上刃上面が潤滑されるので、部品点数を増やすことなく、さらにガイドバーの摩耗対策を図ることができる。また仮にガイドバーの摩耗が多少生じたとしても、摩耗箇所が潤滑剤の受容部分となるので、摩耗箇所のそれ以上の摩耗がし難くなる。そして、ガイドバー下面及び上刃上面の刃部側からケースに収容された潤滑剤が供給されるので、特に摩耗し易いガイドバー下面の刃部側の潤滑剤密度を高めることができ、摩耗を防止することができる。さらに、この発明によれば、ガイドバーの下面の刃部側の端部に面取り部を設け、凹凸を面取り部に連通して設け、ケースに収容された潤滑剤によりガイドバー下面及び上刃上面を潤滑することにより、面取り部を介してガイドバー下面及び上刃上面が潤滑されるので、簡単に摩耗対策の施されたガイドバーを得ることができ、低コストで軽量、耐久性の高いヘッジトリマを提供することができる。 According to the present invention, since the guide bar is formed of a light metal such as aluminum, the weight of the guide bar can be reduced, and at least the lower surface of the guide bar is plated to come into contact with the upper surface of the upper blade. It is possible to take measures against the wear of the guide bar without interposing another part, and as a result, it is possible to provide a hedge trimmer that achieves weight reduction and good maintainability. According to the present invention, the guide bar is provided with irregularities on at least one of the lower surface of the guide bar and the upper surface of the upper blade, and the lubricant contained in the case is supplied to the lower surface of the guide bar and the upper surface of the upper blade. Since the lower surface of the bar and the upper surface of the upper blade are lubricated, it is possible to further take measures against wear of the guide bar without increasing the number of parts. Further, even if the guide bar is somewhat worn, the worn portion becomes a lubricant receiving portion, so that it is difficult to further wear the worn portion. Since the lubricant contained in the case is supplied from the blade part side of the lower surface of the guide bar and the upper surface of the upper blade, the lubricant density on the blade part side of the lower surface of the guide bar that is particularly likely to be worn can be increased. Can be prevented. Further, according to the present invention, the chamfered portion is provided at the edge of the lower surface of the guide bar on the blade portion side, the unevenness is provided in communication with the chamfered portion, and the guide bar lower surface and the upper blade upper surface are provided by the lubricant contained in the case. By lubricating the guide bar, the lower surface of the guide bar and the upper surface of the upper blade are lubricated through the chamfered portion, so that it is possible to easily obtain a guide bar with wear countermeasures, which is a low-cost, lightweight and highly durable hedge trimmer. Can be provided.

また本発明は、長手方向に相互に重なり合うようにして延びる上刃及び下刃と、これら上刃及び下刃の基端側に配置された動力源と、動力源に接続されて該動力源の回転運動を直線運動に変換して上刃及び下刃の少なくともいずれかを往復駆動する運動変換機構と、該運動変換機構を収容するケースに一端側が支持されて他端側が上刃の上方に位置して該上刃の長手方向に沿って延びて上刃及び下刃を支持するガイドバーとを備えるヘッジトリマにおいて、ガイドバーは、アルミニウム等の軽金属によって形成され、ガイドバーの少なくとも下面がメッキ処理されて上刃の上面に当接し、ガイドバーの下面及び上刃の上面の少なくともいずれかに凹凸を設け、ガイドバーの下面にガイドバー長手方向に延びる溝部を設け、該溝部は、ガイドバーと上刃と下刃を貫くボルトを挿通する貫通孔を避け且つ上刃の刃部側に設けられ、凹凸を溝部に連通して設け、溝部の断面形状は、上刃の上面側を底辺とするクサビ形であり、ケースに、クサビ形をした溝部の頂角部分を塞ぎ底辺部分を開口するスリット部を設け、スリット部によってケースから溝部への潤滑剤の流出を調整し、ケースに収容された潤滑剤を、溝部を介してガイドバーの下面及び上刃の上面に供給して、該ガイドバーの下面及び該上刃の上面を潤滑することを特徴とする。 The present invention also includes an upper blade and a lower blade extending so as to overlap each other in the longitudinal direction, a power source disposed on the base end side of the upper blade and the lower blade, and a power source connected to the power source. A motion conversion mechanism that reciprocally drives at least one of the upper blade and the lower blade by converting the rotational motion into a linear motion, and one end side is supported by the case housing the motion conversion mechanism, and the other end side is positioned above the upper blade In the hedge trimmer including the guide bar that extends along the longitudinal direction of the upper blade and supports the upper blade and the lower blade, the guide bar is formed of a light metal such as aluminum, and at least the lower surface of the guide bar is plated. The upper surface of the upper blade, and at least one of the lower surface of the guide bar and the upper surface of the upper blade is provided with irregularities, and a groove portion extending in the longitudinal direction of the guide bar is provided on the lower surface of the guide bar. A through hole for inserting a bolt that penetrates the upper blade and the lower blade is avoided and provided on the blade portion side of the upper blade, and an unevenness is provided in communication with the groove portion. The cross-sectional shape of the groove portion is such that the upper surface side of the upper blade is the bottom side. The case has a wedge shape, and the case is provided with a slit portion that closes the apex portion of the wedge-shaped groove portion and opens the bottom side portion. The lubricant is supplied to the lower surface of the guide bar and the upper surface of the upper blade through the groove, and the lower surface of the guide bar and the upper surface of the upper blade are lubricated.

この発明によれば、アルミニウム等の軽金属によってガイドバーを形成するので、軽量化を実現するとともにメンテナンス性の良好なヘッジトリマを提供することができる。また、この発明によれば、ガイドバーの下面及び上刃の上面の少なくともいずれかに凹凸を設け、ケースに収容された潤滑剤をガイドバーの下面及び上刃の上面に供給することにより、ガイドバー下面及び上刃上面が潤滑されるので、部品点数を増やすことなく、さらにガイドバーの摩耗対策を図ることができる。また、この発明によれば、ガイドバーの下面にガイドバー長手方向に延びる溝部を設け、溝部は上刃の刃部側に設けられ、凹凸を溝部に連通して設け、ケースに収容された潤滑剤によってガイドバー下面及び上刃上面を潤滑することにより、簡単に摩耗対策の施されたガイドバーを得ることができ、低コストで軽量、耐久性の高いヘッジトリマを提供することができる。また溝部としたので、潤滑剤の流出量の制御を可能にすることができる。さらに溝部はガイドバーと上刃と下刃の貫通孔を避けた位置に設けられているので、潤滑剤の貫通孔からの消耗を防止することができ、潤滑剤の早期消耗を防止することができる。さらに、この発明によれば、溝部の断面形状は、上刃の上面側を底辺とするクサビ形であり、ケースに、クサビ形をした溝部の頂角部分を塞ぎ底辺部分を開口するスリット部を設け、スリット部によってケースから溝部への潤滑剤の流出を調整することにより、ケースから溝部への潤滑剤の流出量の制御をより容易にすることができる。またスリット部はクサビ形をした溝部の頂角部分を塞ぎ底辺部分を開口するので、少なくともスリット部の高さに多少の誤差があっても潤滑剤の流出量の誤差を少なくすることができ、またスリット部の巾に多少の誤差があっても潤滑剤の流出量の誤差をなくすことができる。 According to this invention, since the guide bar is formed of a light metal such as aluminum, it is possible to provide a hedge trimmer that achieves weight reduction and good maintainability. According to the present invention, the guide bar is provided with irregularities on at least one of the lower surface of the guide bar and the upper surface of the upper blade, and the lubricant contained in the case is supplied to the lower surface of the guide bar and the upper surface of the upper blade. Since the lower surface of the bar and the upper surface of the upper blade are lubricated, it is possible to further take measures against wear of the guide bar without increasing the number of parts. Further, according to the present invention, a groove portion extending in the longitudinal direction of the guide bar is provided on the lower surface of the guide bar, the groove portion is provided on the blade portion side of the upper blade, the unevenness is provided in communication with the groove portion, and lubrication accommodated in the case By lubricating the lower surface of the guide bar and the upper surface of the upper blade with the agent, it is possible to easily obtain a guide bar with anti-wear measures, and to provide a low-cost, lightweight, and highly durable hedge trimmer. Further, since the groove portion is used, it is possible to control the outflow amount of the lubricant. Furthermore, since the groove is provided at a position avoiding the through holes of the guide bar, the upper blade, and the lower blade, it is possible to prevent the lubricant from being consumed from the through holes and to prevent the lubricant from being consumed at an early stage. it can. Further, according to the present invention, the cross-sectional shape of the groove portion is a wedge shape with the upper surface side of the upper blade as the base, and the case is provided with a slit portion that closes the apex portion of the groove portion having the wedge shape and opens the bottom portion. By providing and adjusting the outflow of the lubricant from the case to the groove by the slit portion, it is possible to more easily control the outflow amount of the lubricant from the case to the groove. In addition, since the slit portion closes the apex portion of the wedge-shaped groove portion and opens the bottom portion, even if there is at least some error in the height of the slit portion, it is possible to reduce the error of the outflow amount of the lubricant, Even if there is a slight error in the width of the slit portion, the error in the amount of lubricant flowing out can be eliminated.

また本発明の凹凸は、刃部側を先端側とし刃部と反対側を基端側として延びて上刃若しくはガイドバーの延びる方向に対して傾斜することを特徴とする。 Moreover, the unevenness | corrugation of this invention is characterized by extending with respect to the direction where an upper blade or a guide bar is extended by extending the blade part side as a front end side and the side opposite to the blade part as a base end side.

この発明によれば、凹凸は、刃部側を先端側とし刃部と反対側が基端側となって上刃若しくはガイドバーの延びる方向に対して傾斜するので、上刃が往復運動すると凹凸が溝のように機能して、潤滑剤はガイドバーの下面と上刃の上面の刃部側を介して、これらの面の基端側に拡散し、ガイドバー下面と上刃上面の先端側への潤滑剤の早期流出を抑えることができ、ガイドバー下面と上刃上面における潤滑剤の保持能力を向上することができ、潤滑剤の早期消耗を防止することができる。 According to this invention, the unevenness is inclined with respect to the extending direction of the upper blade or the guide bar with the blade portion side as the distal end side and the side opposite to the blade portion as the proximal end side. Acting like a groove, the lubricant diffuses to the base end side of these surfaces through the lower surface of the guide bar and the upper edge of the upper blade, and to the tip side of the lower surface of the guide bar and the upper surface of the upper blade. The lubricant can be prevented from flowing out at an early stage, the holding ability of the lubricant on the lower surface of the guide bar and the upper surface of the upper blade can be improved, and the early consumption of the lubricant can be prevented.

さらに本発明は、長手方向に相互に重なり合うようにして延びる上刃及び下刃と、これら上刃及び下刃の基端側に配置された動力源と、動力源に接続されて該動力源の回転運動を直線運動に変換して上刃及び下刃の少なくともいずれかを往復駆動する運動変換機構と、該運動変換機構を収容するケースに一端側が支持されて他端側が上刃の上方に位置して該上刃の長手方向に沿って延びて上刃及び下刃を支持するガイドバーとを備えるヘッジトリマにおいて、ガイドバーは、アルミニウム等の軽金属によって形成され、ガイドバーの少なくとも下面がメッキ処理されて上刃の上面に当接し、ガイドバーの下面及び上刃の上面の少なくともいずれかに凹凸を設け、凹凸は、刃部側を先端側とし刃部と反対側を基端側として延びて上刃若しくはガイドバーの延びる方向に対して傾斜し、ケースに収容された潤滑剤を、上刃の刃部側からガイドバーの下面及び上刃の上面に供給して、該ガイドバーの下面及び該上刃の上面を潤滑することを特徴とする。 Further, the present invention provides an upper blade and a lower blade extending so as to overlap each other in the longitudinal direction, a power source disposed on the base end side of the upper blade and the lower blade, and a power source connected to the power source. A motion conversion mechanism that reciprocally drives at least one of the upper blade and the lower blade by converting the rotational motion into a linear motion, and one end side is supported by the case housing the motion conversion mechanism, and the other end side is positioned above the upper blade In the hedge trimmer including the guide bar that extends along the longitudinal direction of the upper blade and supports the upper blade and the lower blade, the guide bar is formed of a light metal such as aluminum, and at least the lower surface of the guide bar is plated. The upper surface of the upper blade is in contact with the upper surface of the upper blade, and at least one of the lower surface of the guide bar and the upper surface of the upper blade is provided with an uneven surface. Blade or gas Inclined with respect to the direction of extension of Doba, the lubricant accommodated in the case, the blade portion side of the upper blade is supplied to the upper surface of the lower surface and the upper edge of the guide bar, the lower surface and the upper edge of the guide bar The upper surface is lubricated.

この発明によれば、アルミニウム等の軽金属によってガイドバーを形成するので、軽量化を実現するとともにメンテナンス性の良好なヘッジトリマを提供することができる。また、この発明によれば、ガイドバーの下面及び上刃の上面の少なくともいずれかに凹凸を設け、ケースに収容された潤滑剤をガイドバーの下面及び上刃の上面に供給することにより、ガイドバー下面及び上刃上面が潤滑されるので、部品点数を増やすことなく、さらにガイドバーの摩耗対策を図ることができる。またこの発明によれば、凹凸は、刃部側を先端側とし刃部と反対側が基端側となって上刃若しくはガイドバーの延びる方向に対して傾斜するので、ガイドバー下面と上刃上面における潤滑剤の保持能力を向上することができ、潤滑剤の早期消耗を防止することができる。 According to this invention, since the guide bar is formed of a light metal such as aluminum, it is possible to provide a hedge trimmer that achieves weight reduction and good maintainability. According to the present invention, the guide bar is provided with irregularities on at least one of the lower surface of the guide bar and the upper surface of the upper blade, and the lubricant contained in the case is supplied to the lower surface of the guide bar and the upper surface of the upper blade. Since the lower surface of the bar and the upper surface of the upper blade are lubricated, it is possible to further take measures against wear of the guide bar without increasing the number of parts. Further, according to the present invention, the unevenness is inclined with respect to the extending direction of the upper blade or the guide bar, with the blade portion side as the distal end side and the side opposite to the blade portion as the proximal end side. It is possible to improve the retention capability of the lubricant and prevent early consumption of the lubricant.

また本発明は、長手方向に相互に重なり合うようにして延びる上刃及び下刃と、これら上刃及び下刃の基端側に配置された動力源と、動力源に接続されて該動力源の回転運動を直線運動に変換して上刃及び下刃の少なくともいずれかを往復駆動する運動変換機構と、該運動変換機構を収容するケースに一端側が支持されて他端側が上刃の上方に位置して該上刃の長手方向に沿って延びて上刃及び下刃を支持するガイドバーとを備えるヘッジトリマにおいて、ガイドバーは、アルミニウム等の軽金属によって形成され、ガイドバーの少なくとも下面がメッキ処理されて上刃の上面に当接し、ガイドバーの下面及び上刃の上面の少なくともいずれかに凹凸を設け、ガイドバーの下面にガイドバー長手方向に延びる溝部を設け、該溝部は、ガイドバーと上刃と下刃を貫くボルトを挿通する貫通孔を避け且つ上刃の刃部側に設けられ、凹凸を溝部に連通して設け、凹凸は、刃部側を先端側とし刃部と反対側を基端側として延びて上刃若しくはガイドバーの延びる方向に対して傾斜し、ケースに収容された潤滑剤を、溝部を介してガイドバーの下面及び上刃の上面に供給して、該ガイドバーの下面及び該上刃の上面を潤滑することを特徴とする。 The present invention also includes an upper blade and a lower blade extending so as to overlap each other in the longitudinal direction, a power source disposed on the base end side of the upper blade and the lower blade, and a power source connected to the power source. A motion conversion mechanism that reciprocally drives at least one of the upper blade and the lower blade by converting the rotational motion into a linear motion, and one end side is supported by the case housing the motion conversion mechanism, and the other end side is positioned above the upper blade In the hedge trimmer including the guide bar that extends along the longitudinal direction of the upper blade and supports the upper blade and the lower blade, the guide bar is formed of a light metal such as aluminum, and at least the lower surface of the guide bar is plated. The upper surface of the upper blade, and at least one of the lower surface of the guide bar and the upper surface of the upper blade is provided with irregularities, and a groove portion extending in the longitudinal direction of the guide bar is provided on the lower surface of the guide bar. Avoid the through hole through which the bolt that penetrates the upper blade and the lower blade is inserted, and is provided on the blade part side of the upper blade, and the unevenness is provided in communication with the groove part, and the unevenness is opposite to the blade part with the blade side as the tip side The base side is extended to be inclined with respect to the direction in which the upper blade or the guide bar extends, and the lubricant contained in the case is supplied to the lower surface of the guide bar and the upper surface of the upper blade through the groove, The lower surface of the guide bar and the upper surface of the upper blade are lubricated .

この発明によれば、アルミニウム等の軽金属によってガイドバーを形成するので、軽量化を実現するとともにメンテナンス性の良好なヘッジトリマを提供することができる。また、この発明によれば、ガイドバーの下面及び上刃の上面の少なくともいずれかに凹凸を設け、ケースに収容された潤滑剤をガイドバーの下面及び上刃の上面に供給することにより、ガイドバー下面及び上刃上面が潤滑されるので、部品点数を増やすことなく、さらにガイドバーの摩耗対策を図ることができる。また、この発明によれば、ガイドバーの下面にガイドバー長手方向に延びる溝部を設け、溝部は上刃の刃部側に設けられ、凹凸を溝部に連通して設け、ケースに収容された潤滑剤によってガイドバー下面及び上刃上面を潤滑することにより、簡単に摩耗対策の施されたガイドバーを得ることができ、低コストで軽量、耐久性の高いヘッジトリマを提供することができる。またこの発明によれば、凹凸は、刃部側を先端側とし刃部と反対側が基端側となって上刃若しくはガイドバーの延びる方向に対して傾斜するので、ガイドバー下面と上刃上面における潤滑剤の保持能力を向上することができ、潤滑剤の早期消耗を防止することができる。 According to this invention, since the guide bar is formed of a light metal such as aluminum, it is possible to provide a hedge trimmer that achieves weight reduction and good maintainability. According to the present invention, the guide bar is provided with irregularities on at least one of the lower surface of the guide bar and the upper surface of the upper blade, and the lubricant contained in the case is supplied to the lower surface of the guide bar and the upper surface of the upper blade. Since the lower surface of the bar and the upper surface of the upper blade are lubricated, it is possible to further take measures against wear of the guide bar without increasing the number of parts. Further, according to the present invention, a groove portion extending in the longitudinal direction of the guide bar is provided on the lower surface of the guide bar, the groove portion is provided on the blade portion side of the upper blade, the unevenness is provided in communication with the groove portion, and lubrication accommodated in the case By lubricating the lower surface of the guide bar and the upper surface of the upper blade with the agent, it is possible to easily obtain a guide bar with anti-wear measures, and to provide a low-cost, lightweight, and highly durable hedge trimmer. Further, according to the present invention, the unevenness is inclined with respect to the extending direction of the upper blade or the guide bar, with the blade portion side as the distal end side and the side opposite to the blade portion as the proximal end side. It is possible to improve the retention capability of the lubricant and prevent early consumption of the lubricant.

本発明に係わるヘッジトリマによれば、ガイドバーをアルミニウム等の軽金属によって形成し、ガイドバーの少なくとも下面をメッキ処理して上刃上面に当接し、ガイドバーの下面及び上刃の上面の少なくともいずれかに凹凸を設け、ガイドバーの下面の刃部側の端部に面取り部を設け、凹凸を面取り部に連通して設け、ケースに収容された潤滑剤を、面取り部を介してガイドバーの下面及び上刃の上面に供給して、該ガイドバーの下面及び該上刃の上面を潤滑することで、ガイドバーの摩耗が抑制され且つメンテナンス性が良好であるとともに、軽量化が図られたヘッジトリマを提供することができる。 According to a hedge trimmer according to the present invention, the guide bar is formed by a light metal such as aluminum, to contact the upper blade top at least the lower surface of the guide bar by plating, guide one bar lower surface and the upper surface of the upper blade at least A chamfer is provided, a chamfered portion is provided at the end of the lower surface of the guide bar on the blade side, an unevenness is provided in communication with the chamfered portion, and the lubricant contained in the case is passed through the chamfered portion of the guide bar. By supplying the lower surface and the upper surface of the upper blade and lubricating the lower surface of the guide bar and the upper surface of the upper blade, the wear of the guide bar is suppressed, the maintainability is good, and the weight is reduced. A hedge trimmer can be provided.

以下、本発明に係わるヘッジトリマの好ましい実施の形態を図１から図６に基づいて説明する。ヘッジトリマ１は、図１（斜視図）に示すように、基端側に配設されたエンジン５と、エンジン５の下部に接続されたギアケース１０と、ギアケース１０前方に配置された刈取部２０とを有してなる。 Hereinafter, a preferred embodiment of a hedge trimmer according to the present invention will be described with reference to FIGS. As shown in FIG. 1 (perspective view), the hedge trimmer 1 includes an engine 5 disposed on the base end side, a gear case 10 connected to a lower portion of the engine 5, and a cutting portion disposed in front of the gear case 10. 20.

刈取部２０には横方向に延びるフロントハンドル２１が接続され、エンジン５の後端部には横方向に延びるリアハンドル６が接続されている。エンジン５は、これに設けられたリコイルスタータ７により始動し、ギアケース１０内に収められた後述する運動変換機構によりエンジン５の回転動力を往復動力に変換して、刈取部２０の上刃３０及び下刃４０を往復駆動するようになっている。 A front handle 21 extending in the lateral direction is connected to the mowing unit 20, and a rear handle 6 extending in the lateral direction is connected to the rear end portion of the engine 5. The engine 5 is started by a recoil starter 7 provided on the engine 5, and the rotational power of the engine 5 is converted into reciprocating power by a motion conversion mechanism, which will be described later, housed in the gear case 10. The lower blade 40 is driven to reciprocate.

作業者は、フロントハンドル２１とリアハンドル６を握り、刈取部２０を刈取対称物に接触させて刈取作業を行う。またリアハンドル６に装着されたコントロールレバー８を操作することで、エンジン５の動力が制御されて上刃３０及び下刃４０の往復速度を制御することが可能である。刈取部２０の上部には、刈り取られた枝葉等が周囲に飛散するのを防止する葉受板２３が取り付けられている。 An operator grips the front handle 21 and the rear handle 6, and performs the cutting operation by bringing the cutting unit 20 into contact with the cutting object. Further, by operating the control lever 8 mounted on the rear handle 6, the power of the engine 5 is controlled, and the reciprocating speed of the upper blade 30 and the lower blade 40 can be controlled. A leaf receiving plate 23 is attached to the upper part of the cutting unit 20 to prevent the cut leaves and the like from scattering around.

刈取部２０は、図１及び図２（分解斜視図）に示すように、基端側がギアケース１０に接続されてギアケース１０から外側に延び、長手方向に相互に重なり合うようにして延びる上刃３０及び下刃４０とこれらを支持するガイドバー５０を備える。刈取部２０は、組み立てられた状態で上刃３０の下面と下刃４０の上面とが互いに当接し、また上刃３０の上面３０ａはガイドバー５０の下面５０ａに当接する。刈取部２０は、下刃４０と葉受板２３との間にボルト２５を挿通して上刃３０及び下刃４０を摺動可能にナット２６により締結して構成されている。本実施例では、上刃３０と下刃４０との間にスペーサ２７を介在してボルト２５を挿通しているが、このスペーサ２７をなくした構成でもよい。 As shown in FIGS. 1 and 2 (exploded perspective view), the cutting portion 20 is connected to the gear case 10 and extends outward from the gear case 10 and extends so as to overlap with each other in the longitudinal direction. 30 and a lower blade 40 and a guide bar 50 for supporting them. In the assembled state, the lower surface of the upper blade 30 and the upper surface of the lower blade 40 are in contact with each other, and the upper surface 30 a of the upper blade 30 is in contact with the lower surface 50 a of the guide bar 50. The cutting unit 20 is configured by inserting a bolt 25 between the lower blade 40 and the leaf receiving plate 23 and fastening the upper blade 30 and the lower blade 40 with a nut 26 so as to be slidable. In the present embodiment, the bolts 25 are inserted through the spacers 27 between the upper blades 30 and the lower blades 40, but the spacers 27 may be omitted.

上刃３０及び下刃４０は、鉄等の金属材料で形成され、基端側から先端側に延びる本体部３１，４１と、本体部３１，４１の一方側端部に長手方向に所定間隔を有して形成された複数の刃部３２，４２とを有してなる。ガイドバー５０は、アルミニウムで形成されて軽量化されており、ガイドバー５０の上面には長手方向の一端から他端に延びる凹部５１が形成されている。つまり、ガイドバー５０は断面が凹状に形成されている。このため、ガイドバー５０は、重量を抑えつつ曲げ剛性の強化が図られている。なお、ガイドバー５０は、マグネシウム等の軽金属やアルミニウム，マグネシウムを主成分とする合金を素材として形成されてもよい。 The upper blade 30 and the lower blade 40 are made of a metal material such as iron, and have a main body portions 31 and 41 extending from the proximal end side to the distal end side, and a predetermined interval in the longitudinal direction at one end portion of the main body portions 31 and 41. It has a plurality of blade parts 32 and 42 formed. The guide bar 50 is made of aluminum to reduce the weight, and a concave portion 51 extending from one end to the other end in the longitudinal direction is formed on the upper surface of the guide bar 50. That is, the guide bar 50 has a concave cross section. For this reason, the guide bar 50 is strengthened in bending rigidity while suppressing weight. The guide bar 50 may be made of a light metal such as magnesium, aluminum, or an alloy mainly composed of magnesium.

ガイドバー５０は、図３（断面図）に示すように、その基端側端部がボルト２５を介してギアケース１０の先端部に締結されて固定されている。上刃３０及び下刃４０は、各基端側端部がギアケース１０内に収容された運動変換機構１１に接続されて往復駆動可能になっている。 As shown in FIG. 3 (cross-sectional view), the guide bar 50 has a proximal end portion fastened and fixed to a distal end portion of the gear case 10 via a bolt 25. The upper blade 30 and the lower blade 40 are connected to the motion conversion mechanism 11 whose base end side ends are accommodated in the gear case 10 so as to be reciprocally driven.

運動変換機構１１を収容するギアケース１０内の収容部１３には潤滑剤が受容されており、この潤滑剤は、運動変換機構１１が駆動すると、上刃３０の下面と下刃４０の上面に滲み出てこれらの面を潤滑する。ギアケース１０の収容部１３の先端部には、ガイドバー５０の凹部５１から潤滑剤が漏れ出るのを防止する目的で、ガイドバー５０の基端側端部に当接して凹部５１を塞ぐリブ１４が形成されている。 A lubricant is received in the accommodating portion 13 in the gear case 10 that accommodates the motion converting mechanism 11, and this lubricant is applied to the lower surface of the upper blade 30 and the upper surface of the lower blade 40 when the motion converting mechanism 11 is driven. It exudes and lubricates these surfaces. A rib that contacts the proximal end of the guide bar 50 and closes the recess 51 at the distal end of the housing portion 13 of the gear case 10 in order to prevent the lubricant from leaking from the recess 51 of the guide bar 50. 14 is formed.

前述したように刈取部２０は、図２に示すように、ガイドバー５０の下面５０ａが上刃３０の上面３０ａに当接するように構成されているので、鉄製の上刃３０が往復駆動すると、上刃３０がアルミニウム製のガイドバー５０の下面５０ａを摺動し、上刃３０より固さの柔らかいガイドバー５０の下面５０ａが簡単に摩耗してしまう。このガイドバー５０の摩耗は、ガイドバー５０の寿命を短くするだけではなく、上刃３０と下刃４０との間隔を広げ、刈取部２０の刈取性能を低下させる要因ともなる。そこで、アルミニウム製のガイドバー５０に硬質アルマイト処理を施して摩耗を抑制している。硬質アルマイト処理は、表面硬度をアルミニウム素地より硬くできるばかりでなく、一般的なメッキ処理と比べても大きな硬度が得られるとともに、通常のメッキ処理に比べてメッキ厚を厚くできる効果が得られる。本実施例では、硬質アルマイトを選択したが、無電解ニッケルメッキ等のメッキ処理を施しても硬質アルマイトと同様の効果を得ることができる。なお、本実施例ではガイドバー５０の全体にメッキ処理をしているが、ガイドバー５０の下面５０ａにのみメッキ処理を施してもよい。 As described above, the cutting unit 20 is configured such that the lower surface 50a of the guide bar 50 contacts the upper surface 30a of the upper blade 30, as shown in FIG. The upper blade 30 slides on the lower surface 50a of the aluminum guide bar 50, and the lower surface 50a of the guide bar 50, which is softer than the upper blade 30, is easily worn. The wear of the guide bar 50 not only shortens the life of the guide bar 50 but also widens the distance between the upper blade 30 and the lower blade 40 and causes the cutting performance of the cutting unit 20 to decrease. Therefore, hard alumite treatment is applied to the aluminum guide bar 50 to suppress wear. The hard alumite treatment can not only make the surface hardness harder than that of the aluminum base, but also provides a greater hardness than the general plating treatment, and the effect of increasing the plating thickness compared to the normal plating treatment. In this embodiment, hard anodized is selected, but the same effect as hard anodized can be obtained even if a plating process such as electroless nickel plating is performed. In this embodiment, the entire guide bar 50 is plated, but the lower surface 50a of the guide bar 50 may be plated.

また上刃３０の上面３０ａに、潤滑剤の濡れ性を高める程度の凹凸３３を長手方向に連続して設けてもよい。この凹凸３３は、上刃３０の刃部３２側を先端側とし刃部３２と反対側を基端側として延びて、上刃３０の延びる方向に対して傾斜する。 Further, the upper and lower surfaces 30a of the upper blade 30 may be provided with unevenness 33 that is continuous enough in the longitudinal direction to increase the wettability of the lubricant. The unevenness 33 extends with the blade portion 32 side of the upper blade 30 as the distal end side and the side opposite to the blade portion 32 as the proximal end side, and is inclined with respect to the direction in which the upper blade 30 extends.

この凹凸３３は、上刃３０が往復駆動すると溝のように機能して、図３に示すギアケース１０から滲み出た潤滑剤を上刃３０の上面３０ａの基端側に拡散する。このため、ガイドバー５０の下面５０ａと上刃３０の上面３０ａを潤滑することができ、ガイドバー５０の摩耗防止効果を得ることができる。また上刃上面の先端側への早期の流動を抑えることができ、上刃上面における潤滑剤の保持機能を向上することができ、潤滑剤の早期消耗を防止することができる。 The unevenness 33 functions like a groove when the upper blade 30 is driven to reciprocate, and diffuses the lubricant exuded from the gear case 10 shown in FIG. 3 to the base end side of the upper surface 30 a of the upper blade 30. For this reason, the lower surface 50a of the guide bar 50 and the upper surface 30a of the upper blade 30 can be lubricated, and the wear preventing effect of the guide bar 50 can be obtained. Moreover, the early flow to the front end side of the upper blade upper surface can be suppressed, the retaining function of the lubricant on the upper blade upper surface can be improved, and the early consumption of the lubricant can be prevented.

但し、凹凸３３の大きさが大きすぎると、上刃上面から潤滑剤が多量に漏れ出してしまい、図３に示すギアケース１０に受容された潤滑剤の早期消耗を招くことになる。このため凹凸３３の大きさは、上刃上面を潤滑剤の表面張力で拡散できる程度にすることで、潤滑剤の供給を、摩耗及び潤滑剤の消耗に対して無駄のない状態にすることができる。本実施例では、上刃上面にフライス加工によって凹凸３３を設けているが、ショットピーニング等の打刻やその他の切削加工で形成してもよい。またガイドバー５０の下面に凹凸を設けてもよい。 However, if the size of the unevenness 33 is too large, a large amount of lubricant leaks from the upper surface of the upper blade, leading to premature consumption of the lubricant received in the gear case 10 shown in FIG. For this reason, the size of the unevenness 33 is set such that the upper surface of the upper blade can be diffused by the surface tension of the lubricant, so that the supply of the lubricant can be made free from wear and wear of the lubricant. it can. In the present embodiment, the unevenness 33 is provided on the upper surface of the upper blade by milling, but it may be formed by stamping such as shot peening or other cutting. Further, unevenness may be provided on the lower surface of the guide bar 50.

ガイドバー５０は、刈取作業時に刈取対象物の図２に示す刃部３２，４２への挟み込みが原因となって、ガイドバー５０の下面５０ａ、特に刃部側端部５０ｂの近傍で摩耗し易い。これは、上刃３０及び下刃４０の弾性揺動により、ガイドバー５０の下面５０ａの刃部側端部５０ｂの接触面圧が変動し易いためである。このため、図４（斜視図）に示すように、ガイドバー５０の下面５０ａの刃部側端部５０ｂに面取り部５３を設けている。 The guide bar 50 is likely to be worn near the lower surface 50a of the guide bar 50, particularly in the vicinity of the end portion 50b on the blade portion side, due to the pinching of the object to be cut into the blade portions 32 and 42 shown in FIG. . This is because the contact surface pressure of the blade portion side end portion 50b of the lower surface 50a of the guide bar 50 is likely to fluctuate due to the elastic oscillation of the upper blade 30 and the lower blade 40. For this reason, as shown in FIG. 4 (perspective view), a chamfered portion 53 is provided at the blade portion side end portion 50 b of the lower surface 50 a of the guide bar 50.

面取り部５３は、潤滑剤の表面張力により面取り部５３をガイドバー５０の先端側に滲む程度に濡れ性を高めるように形成し、具体的には、図３及び図４に示すように、面取り部５３と上刃３０の上面３０ａとの隙間が狭く且つ深くなるように形成されている。このようにすることで、ギアケース１０から面取り部５３に滲み出た潤滑剤は、上刃３０の往復駆動により面取り部５３の先端側へ伝わっていくことができる。そして、面取り部５３に滲んだ潤滑剤は、上刃３０の上面３０ａに形成された図２に示す凹凸３３によって上刃上面に拡散する。ここで、上刃３０の上面３０ａでは、刃部３２側の潤滑剤の密度が高いので、ガイドバー５０の下面５０ａの刃部側端部５０ｂの近傍の摩耗を防止することができる。但し、面取り部５３と上刃上面との隙間が広すぎると、刈取対象物に潤滑剤が付着して潤滑剤の早期消耗を招くことになる。そこで、前述したように、面取り部５３と上刃３０の上面３０ａとの隙間が狭く且つ深くなるように、面取り部５３を形成する。 The chamfered portion 53 is formed so as to enhance the wettability to such an extent that the chamfered portion 53 spreads toward the tip end side of the guide bar 50 by the surface tension of the lubricant. Specifically, as shown in FIGS. The gap between the portion 53 and the upper surface 30a of the upper blade 30 is formed to be narrow and deep. By doing so, the lubricant that has oozed out of the gear case 10 into the chamfered portion 53 can be transmitted to the tip end side of the chamfered portion 53 by the reciprocating drive of the upper blade 30. The lubricant that has blotted into the chamfered portion 53 is diffused to the upper surface of the upper blade by the unevenness 33 shown in FIG. 2 formed on the upper surface 30 a of the upper blade 30. Here, since the density of the lubricant on the blade portion 32 side is high on the upper surface 30a of the upper blade 30, wear in the vicinity of the blade portion side end portion 50b of the lower surface 50a of the guide bar 50 can be prevented. However, if the gap between the chamfered portion 53 and the upper surface of the upper blade is too wide, the lubricant adheres to the object to be cut and causes early consumption of the lubricant. Therefore, as described above, the chamfered portion 53 is formed so that the gap between the chamfered portion 53 and the upper surface 30a of the upper blade 30 is narrow and deep.

なお、図５（ａ）（斜視図）に示すように、ガイドバー５０の下面５０ａにガイドバー長手方向に延びる溝部５５を設けてもよい。この溝部５５はガイドバー５０と図２及び図３に示す上刃３０と下刃４０を貫くボルト２５を挿通する貫通孔５７を避け且つ上刃３０の刃部側に設けられている。このように溝部５５を形成すると、図３に示すギアケース１０から溝部５５に滲み出した潤滑剤は、溝部５５を流れるとともに、上刃３０の上面３０ａに形成された凹凸３３によって上刃上面に拡散する。このため、簡単に摩耗対策の施されたガイドバー５０を得ることができ、低コストで軽量、耐久性の高いヘッジトリマ１を提供することができる。 In addition, as shown to Fig.5 (a) (perspective view), you may provide the groove part 55 extended in a guide bar longitudinal direction in the lower surface 50a of the guide bar 50. FIG. The groove portion 55 is provided on the blade portion side of the upper blade 30 while avoiding the through hole 57 through which the bolt 25 penetrating the guide bar 50 and the upper blade 30 and the lower blade 40 shown in FIGS. When the groove portion 55 is formed in this way, the lubricant that has oozed out from the gear case 10 shown in FIG. 3 into the groove portion 55 flows through the groove portion 55, and is formed on the upper blade upper surface by the unevenness 33 formed on the upper surface 30 a of the upper blade 30. Spread. For this reason, it is possible to easily obtain the guide bar 50 with anti-wear measures, and it is possible to provide the hedge trimmer 1 that is low-cost, lightweight, and highly durable.

溝部５５は貫通孔５７を避けて形成されているので、潤滑剤の貫通孔５７からの消耗を防ぎ、潤滑剤の早期消耗を防止することができる。また溝部５５を刃部側に寄せて形成することで、前述したようにガイドバー５０の下面５０ａの刃部側端部５０ｂの近傍における摩耗を防止することができる。 Since the groove part 55 is formed avoiding the through hole 57, it is possible to prevent the lubricant from being consumed from the through hole 57 and prevent the lubricant from being consumed at an early stage. Further, by forming the groove portion 55 close to the blade portion side, wear in the vicinity of the blade portion side end portion 50b of the lower surface 50a of the guide bar 50 can be prevented as described above.

なお溝部５５の形状は単なる凹状にするのではなく、形状に特徴をもたせることで、上刃３０の上面３０ａの潤滑性能を向上し、且つ潤滑剤の漏れを防止することが可能である。例えば、図５（ｂ）（側面図）に示すように、溝部５５は、ガイドバー５０の短手方向（巾方向）において非対称のクサビ型に形成する。そして、図６（部分断面斜視図）に示すように、ガイドカバー５０の凹部５１を覆うリブ１４の底部に、クサビ形をした溝部５５の頂角部分を塞ぎ底辺部分を開口するスリット部１５を設ける。このようにすると、スリット部１５を介してギアケース１０から溝部５５への潤滑剤の流出を調整することができる。 In addition, the shape of the groove portion 55 is not simply a concave shape, but it is possible to improve the lubrication performance of the upper surface 30a of the upper blade 30 and prevent the leakage of the lubricant by giving the shape a characteristic. For example, as shown in FIG. 5B (side view), the groove 55 is formed in an asymmetric wedge shape in the short direction (width direction) of the guide bar 50. Then, as shown in FIG. 6 (partial cross-sectional perspective view), the slit portion 15 that closes the apex portion of the wedge-shaped groove portion 55 and opens the bottom portion is formed at the bottom portion of the rib 14 that covers the concave portion 51 of the guide cover 50. Provide. In this way, it is possible to adjust the outflow of the lubricant from the gear case 10 to the groove portion 55 via the slit portion 15.

本発明の一実施の形態に係わるヘッジトリマの斜視図を示す。1 shows a perspective view of a hedge trimmer according to an embodiment of the present invention. ヘッジトリマの刈取部の分解斜視図を示す。The disassembled perspective view of the cutting part of a hedge trimmer is shown. ヘッジトリマのギアヘッドの断面図を示す。FIG. 3 shows a cross-sectional view of a gear head of a hedge trimmer. 刈取部のガイドバーの斜視図を示す。The perspective view of the guide bar of a cutting part is shown. ガイドバーの他の実施の形態を示し、同図（ａ）はガイドバーの斜視図であり、同図（ｂ）はガイドバーの側面図である。Other embodiment of a guide bar is shown, The figure (a) is a perspective view of a guide bar, The figure (b) is a side view of a guide bar. 他の実施の形態に係わるガイドバーの端部周辺の断面斜視図を示す。The cross-sectional perspective view of the edge part periphery of the guide bar concerning other embodiment is shown.

１ヘッジトリマ
５エンジン（動力源）
１０ギアケース（ケース）
１１運転変換機構
１５スリット部
２５ボルト
３０上刃
３０ａ上面
３２刃部
３３凹凸
４０下刃
５０ガイドバー
５０ａ下面
５３面取り部
５５溝部
５７貫通孔 1 Hedge trimmer 5 Engine (power source)
10 Gear case (case)
DESCRIPTION OF SYMBOLS 11 Operation conversion mechanism 15 Slit part 25 Bolt 30 Upper blade 30a Upper surface 32 Blade part 33 Concavity and convexity 40 Lower blade 50 Guide bar 50a Lower surface 53 Chamfered part 55 Groove part 57 Through-hole

Claims

An upper blade and a lower blade extending so as to overlap each other in the longitudinal direction, a power source disposed on the base end side of the upper blade and the lower blade, and a rotational movement of the power source connected to the power source in a straight line A motion conversion mechanism that reciprocally drives at least one of the upper blade and the lower blade by converting into motion, and one end side is supported by a case housing the motion conversion mechanism, and the other end side is positioned above the upper blade. A hedge trimmer comprising a guide bar extending along the longitudinal direction of the upper blade and supporting the upper blade and the lower blade,
The guide bar is formed by a light metal such as aluminum, to contact with the upper surface of the upper blade at least the lower surface of the guide bar is plating,
Providing irregularities on at least one of the lower surface of the guide bar and the upper surface of the upper blade,
A chamfered portion is provided at an end portion of the lower surface of the guide bar on the blade portion side,
Providing the unevenness in communication with the chamfered portion;
The lubricant contained in the case is supplied to the lower surface of the guide bar and the upper surface of the upper blade through the chamfered portion to lubricate the lower surface of the guide bar and the upper surface of the upper blade. Hedge trimmer.

An upper blade and a lower blade extending so as to overlap each other in the longitudinal direction, a power source disposed on the base end side of the upper blade and the lower blade, and a rotational movement of the power source connected to the power source in a straight line A motion conversion mechanism that reciprocally drives at least one of the upper blade and the lower blade by converting into motion, and one end side is supported by a case housing the motion conversion mechanism, and the other end side is positioned above the upper blade. A hedge trimmer comprising a guide bar extending along the longitudinal direction of the upper blade and supporting the upper blade and the lower blade,
The guide bar is formed of a light metal such as aluminum, and at least the lower surface of the guide bar is plated to contact the upper surface of the upper blade,
Providing irregularities on at least one of the lower surface of the guide bar and the upper surface of the upper blade,
A groove extending in the longitudinal direction of the guide bar is provided on the lower surface of the guide bar,
The groove portion is provided on the blade portion side of the upper blade while avoiding a through hole through which a bolt penetrating the guide bar, the upper blade, and the lower blade is inserted,
Providing the unevenness in communication with the groove,
The cross-sectional shape of the groove portion is a wedge shape with the upper surface side of the upper blade as the bottom,
The case is provided with a slit portion that closes the apex portion of the wedge-shaped groove portion and opens the bottom portion,
Adjusting the outflow of the lubricant from the case to the groove by the slit,
The lubricant accommodated in the case is supplied to the lower surface of the guide bar and the upper surface of the upper blade through the groove, thereby lubricating the lower surface of the guide bar and the upper surface of the upper blade. Hedge trimmer.

The irregularities, according to claim 1 or 2, characterized in that inclined with respect to the upper blade or the direction of extension of the guide bars extend opposite to the blade portion and the distal end side of the blade portion side as the proximal side Hedge trimmer described in 1.

An upper blade and a lower blade extending so as to overlap each other in the longitudinal direction, a power source disposed on the base end side of the upper blade and the lower blade, and a rotational movement of the power source connected to the power source in a straight line A motion conversion mechanism that reciprocally drives at least one of the upper blade and the lower blade by converting into motion, and one end side is supported by a case housing the motion conversion mechanism, and the other end side is positioned above the upper blade. A hedge trimmer comprising a guide bar extending along the longitudinal direction of the upper blade and supporting the upper blade and the lower blade,
The guide bar is formed of a light metal such as aluminum, and at least the lower surface of the guide bar is plated to contact the upper surface of the upper blade,
Providing irregularities on at least one of the lower surface of the guide bar and the upper surface of the upper blade,
The unevenness extends with the blade portion side as a distal end side and the side opposite to the blade portion as a proximal end side, and is inclined with respect to the extending direction of the upper blade or the guide bar,
The lubricant contained in the case is supplied from the blade portion side of the upper blade to the lower surface of the guide bar and the upper surface of the upper blade, and the lower surface of the guide bar and the upper surface of the upper blade are lubricated. A featured hedge trimmer.

An upper blade and a lower blade extending so as to overlap each other in the longitudinal direction, a power source disposed on the base end side of the upper blade and the lower blade, and a rotational movement of the power source connected to the power source in a straight line A motion conversion mechanism that reciprocally drives at least one of the upper blade and the lower blade by converting into motion, and one end side is supported by a case housing the motion conversion mechanism, and the other end side is positioned above the upper blade. A hedge trimmer comprising a guide bar extending along the longitudinal direction of the upper blade and supporting the upper blade and the lower blade,
The guide bar is formed of a light metal such as aluminum, and at least the lower surface of the guide bar is plated to contact the upper surface of the upper blade,
Providing irregularities on at least one of the lower surface of the guide bar and the upper surface of the upper blade,
A groove extending in the longitudinal direction of the guide bar is provided on the lower surface of the guide bar,
The groove portion is provided on the blade portion side of the upper blade while avoiding a through hole through which a bolt penetrating the guide bar, the upper blade, and the lower blade is inserted,
Providing the unevenness in communication with the groove,
The unevenness extends with the blade portion side as a distal end side and the side opposite to the blade portion as a proximal end side, and is inclined with respect to the extending direction of the upper blade or the guide bar,
The lubricant accommodated in the case is supplied to the lower surface of the guide bar and the upper surface of the upper blade through the groove, thereby lubricating the lower surface of the guide bar and the upper surface of the upper blade. Hedge trimmer.