JP2012170450A - Pruning saw - Google Patents

Pruning saw Download PDF

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JP2012170450A
JP2012170450A JP2011038871A JP2011038871A JP2012170450A JP 2012170450 A JP2012170450 A JP 2012170450A JP 2011038871 A JP2011038871 A JP 2011038871A JP 2011038871 A JP2011038871 A JP 2011038871A JP 2012170450 A JP2012170450 A JP 2012170450A
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saw
branch
saw body
plate
spring member
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Yoshitaka Akamatsu
義隆 赤松
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Chugoku Electric Power Co Inc
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Chugoku Electric Power Co Inc
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Abstract

PROBLEM TO BE SOLVED: To provide a pruning saw reducing labor of a worker.SOLUTION: This pruning saw 10 includes a single-edged saw body 2 fixed to the edge of a long operation stick 1. Furthermore, the pruning saw 10 includes a swing plate 3, a clasp plate 4, a first spring member 5, and a second spring member 6. The swing plate 3 is rotatably connected to the edge of the operation stick 1. The clasp plate 4 is rotatably connected to the edge of the swing plate 3, and has an edge intersecting the saw body 2 and extending. The clasp plate 4 has on one side edge, a plurality of thrusting blades 4a to thrust into a branch Br, and cuts the branch Br by reciprocating the saw body 2 in a condition that the thrusting blade 4a holds the branch Br. Since the resultant force of the spring force of the first spring member 5 and the second spring member 6 energizes a blade 2a of the saw body 2 toward the branch Br, the saw body 2 hardly comes off from a cut face of the branch Br.

Description

本発明は、枝切り用鋸に関する。特に、樹木に生えた高所の枝を切り落とすために用いられる鋸の構造に関する。   The present invention relates to a branch cutting saw. In particular, the present invention relates to a saw structure that is used to cut off high-altitude branches that grow on trees.

山間部などに生立する樹木が成長すると、架空線又は送電線に接触する心配がある。したがって、電力事業者は、架空線又は送電線の障害となる樹木を伐採することがある。この場合、伐採の対象となる樹木に生えた高所の枝を伐採する、いわゆる「枝切り」が実施されている。   When trees that grow in mountainous areas grow, there is a concern of contact with overhead lines or power transmission lines. Therefore, an electric power company may cut down a tree which becomes an obstacle of an overhead line or a transmission line. In this case, so-called “branching” is carried out in which a high-level branch growing on a tree to be cut is cut.

例えば、高所作業車が立ち入り困難な山間部では、作業者が樹木に登り、高所の枝を切り落としていた。又、ホットスティックと呼ばれる絶縁棒の先端部に枝切り用鋸を装着し、地上からの操作で高所の枝を切り落としていた。   For example, in mountainous areas where it is difficult for high-altitude work vehicles to enter, workers climbed trees and cut off high-altitude branches. In addition, a branch cutting saw was attached to the tip of an insulating rod called a hot stick, and branches at high places were cut off from the ground.

前者の枝切り作業は、作業員が高所に登るので、作業員の安全を確保することが容易でないことから、現在では、後者の長柄の枝切り用鋸による枝切り作業が実施されている。しかし、長柄の枝切り用鋸を用いて、目的の高所の枝を切り落とすことは、相当の熟練した伐採技能を必要としていた。又、後者の枝切り作業は、上方を仰ぎ見る姿勢を持続することが多く、作業者の労力を大きいものとしていた。   Since the former pruning work is not easy to ensure the safety of the worker because the worker climbs to a high place, the pruning work by the latter long-pruning saw is currently being implemented. . However, using a long-handled saw for cutting off the desired high branch required considerable skill in logging. Further, the latter branching work often maintains the posture of looking up, and the labor of the operator is increased.

このような不具合を解消するため、枝に鋸刃を押し付ける力を大きくでき、かつ、作業者の労力を軽減可能な枝切断具が開示されている(例えば、特許文献1参照)。   In order to solve such problems, a branch cutting tool that can increase the force for pressing a saw blade against a branch and can reduce the labor of an operator is disclosed (for example, see Patent Document 1).

特許文献1による枝切断具は、支持筒の内部に往復動可能に収容された作動軸と、作動軸の先端部に固定され、作動軸と一体に往復動して枝を切断する鋸刃と、支持筒の先端部に固定され、作動軸の往復動を案内するロッドガイドと、ロッドガイドに回動可能に取り付けられ、枝を係止可能な爪を有するフックと、フックの爪を鋸刃から離す方向へ常時回動付勢するばね部材と、フックの回動量を規制するストッパと、を備えて構成している。   The branch cutting tool according to Patent Document 1 includes an operating shaft that is accommodated in a support cylinder so as to be reciprocally movable, a saw blade that is fixed to a distal end portion of the operating shaft, and reciprocates integrally with the operating shaft to cut a branch. A rod guide that is fixed to the tip of the support cylinder and guides the reciprocating movement of the operating shaft, a hook that is pivotally attached to the rod guide and has a pawl that can lock the branch, and a hook blade with a saw blade A spring member that constantly urges rotation in a direction away from the hook, and a stopper that restricts the amount of rotation of the hook.

更に、特許文献1による枝切断具は、フックの回動支点が作動軸の軸中心に対して偏心した位置に配置され、爪が作動軸の軸中心に対して回動支点の偏心方向と反対の方向へ突出している。又、鋸刃から遠ざかる方向へ延びるように、フックがロッドガイドに取り付けられると共に、爪が鋸刃に対して回動支点側へ出っ張らないように、フックがストッパで回動規制されている。   Furthermore, the branch cutting tool according to Patent Document 1 is arranged at a position where the rotation fulcrum of the hook is eccentric with respect to the axis center of the operating shaft, and the claw is opposite to the eccentric direction of the rotation fulcrum with respect to the axis center of the operating shaft. Protrudes in the direction of. Further, the hook is attached to the rod guide so as to extend away from the saw blade, and the hook is restricted by a stopper so that the claw does not protrude toward the rotation fulcrum side with respect to the saw blade.

又、高所にある比較的径の大きい枝を安全かつ能率的に切り落とすことができる枝切り用鋸が開示されている(例えば、特許文献2参照)。   Further, a branch cutting saw that can safely and efficiently cut off a branch having a relatively large diameter at a high place is disclosed (for example, see Patent Document 2).

特許文献2による枝切り用鋸は、鋸刃と挟持杆を所定長さの柄体の先端部に備えている。鋸刃は、柄体の基部に設けられた操作部からの遠隔操作によって、進退自在な状態に配置されている。挟持杆は、鋸刃の刃面と略対面する状態に配置されると共に、その基端部を柄体の先端部に開閉自在に連結している。   The saw for cutting according to Patent Document 2 includes a saw blade and a clamping rod at the tip of a handle having a predetermined length. The saw blade is disposed in a state of being able to advance and retract by remote operation from an operation unit provided at the base of the handle. The sandwiching rod is disposed so as to substantially face the blade surface of the saw blade, and its base end portion is connected to the distal end portion of the handle body so as to be freely opened and closed.

更に、挟持杆は、ばね部材の反発力によって常に鋸刃の刃面に向けて回動するように付勢されている。又、挟持杆の中間部には、鋸刃に向けてストッパ片が突出形成され、挟持杆の先端部には、後退した鋸刃の先端部より長く突出した湾曲操作部を有している。そして、湾曲操作部を枝に当接して、鋸刃に対して挟持杆を開くことができる。   Furthermore, the clamping rod is biased so as to always rotate toward the blade surface of the saw blade by the repulsive force of the spring member. Further, a stopper piece is formed to project toward the saw blade at an intermediate portion of the sandwiching rod, and a distal end portion of the sandwiching rod has a bending operation portion that projects longer than the distal end portion of the retracted saw blade. The bending operation portion can be brought into contact with the branch to open the clamping rod with respect to the saw blade.

特開2000−236747号公報JP 2000-236747 A 実開昭62−83441号公報Japanese Utility Model Publication No. 62-83441

特許文献1による枝切断具は、作動軸と連結する動力伝達機構とエンジンを支持筒の基端部に備えている。エンジンを駆動すると、エンジンの出力軸の回転運動が動力伝達機構で直線往復運動に変換されて、作動軸を介して鋸刃を往復動できる。つまり、鋸刃で枝を切断できる。そして、特許文献1による枝切断具は、フックで枝を係止しながら、鋸刃で高所の枝を切断できるので、作業者の労力を軽減できるという利点がある。   The branch cutting tool according to Patent Document 1 includes a power transmission mechanism connected to an operating shaft and an engine at a base end portion of a support cylinder. When the engine is driven, the rotational motion of the output shaft of the engine is converted into linear reciprocating motion by the power transmission mechanism, and the saw blade can be reciprocated through the operating shaft. That is, the branch can be cut with a saw blade. And since the branch cutting tool by patent document 1 can cut | disconnect a branch of a high place with a saw blade, latching a branch with a hook, there exists an advantage that an operator's labor can be reduced.

しかしながら、特許文献1による枝切断具は、実態として電動鋸であり、重量物であるエンジンの携帯を必要としている。特許文献1によるエンジン付きの枝切断具は、例えば、傾斜の多い山間部を作業員が持ち運ぶには不便であるという問題がある。傾斜の多い山間部などでも持ち運びが容易な手動操作式の枝切断具が求められている。   However, the branch cutting tool according to Patent Document 1 is actually an electric saw, and requires a heavy engine to be carried. For example, the branch cutting tool with an engine according to Patent Document 1 has a problem that it is inconvenient for an operator to carry a mountainous area with many slopes. There is a need for a manually operated branch cutting tool that is easy to carry even in mountainous areas with many slopes.

一方、特許文献2による枝切り用鋸は、柄体の基部に設けた操作部(ハンドル)を往復動して、枝を切断する手動操作式の枝切断具であるが、挟持杆の中間部に設けたストッパ片を枝の下方から押し付けながら、操作部(ハンドル)を操作するので、作業者の労力を大きいものとしていた。   On the other hand, the branch cutting saw according to Patent Document 2 is a manually operated branch cutting tool that reciprocates an operation portion (handle) provided at the base of the handle body to cut a branch, but is an intermediate portion of a clamping rod. Since the operation portion (handle) is operated while pressing the stopper piece provided on the lower side of the branch, the labor of the operator is increased.

このように、特許文献2による枝切り用鋸は、持ち運びには便利であるが、作業者の労力を軽減することが困難であるという問題がある。持ち運びに便利であると共に、作業者の労力を軽減できる枝切り用鋸が求められている。そして、以上のことが本発明による課題といってよい。   As described above, the saw for cutting according to Patent Document 2 is convenient to carry, but there is a problem that it is difficult to reduce the labor of the operator. There is a need for a branching saw that is convenient to carry and can reduce the labor of the operator. The above can be said to be a problem according to the present invention.

本発明は、このような課題に鑑みてなされたものであり、持ち運びに便利であると共に、作業者の労力を軽減できる枝切り用鋸を提供することを目的とする。   The present invention has been made in view of such problems, and an object thereof is to provide a branch cutting saw that is convenient to carry and can reduce the labor of an operator.

本発明者は、鋸を下方に引くときは、高所の枝を切断することは容易であるが、鋸を上方に押し上げたときに、鋸が切り口から外れ、高所の切り口に鋸を再び戻す作業が作業者の負担になっていることに着目し、鋸が切り口から外れ難いリンク装置を手動操作式の枝切り用鋸に設けることにより、この課題が解決可能であると考え、これに基づいて、以下のような新たな枝切り用鋸を発明するに至った。   When the inventor pulls the saw downward, it is easy to cut the branches at the high place, but when the saw is pushed up, the saw comes off the cut and the saw is cut again at the high cut. Focusing on the fact that returning work is a burden on the operator, it is considered that this problem can be solved by providing a manually operated branch cutting saw with a link device that prevents the saw from coming off the cut end. Based on this, the inventors have invented the following new branch cutting saw.

(1)本発明による枝切り用鋸は、長尺の操作棒の先端部に固定された枝切り用鋸であって、前記操作棒が伸長する方向に延びる片刃の鋸本体と、基端部が前記操作棒の先端部と回動可能に連結し、先端部が前記鋸本体の刃が形成される方向と反対側に延びる帯状の揺動板と、基端部が前記揺動板の先端部と回動可能に連結し、先端部が前記鋸本体と交差するように、当該鋸本体を越えて延びる鉤状の留め金板と、前記揺動板の先端部が前記鋸本体から遠ざかるように、当該揺動板を回動させる力を付勢する第1ばね部材と、前記揺動板と前記留め金板が折り重なるように、前記揺動板と前記留め金板が閉じる力を付勢する第2ばね部材と、を備え、前記鋸本体は、当該鋸本体の刃が形成される方向と同じ方向に突出し、枝を受け入れて支持可能な突出片を基端部に有し、前記留め金板は、前記突出片と対向し、当該突出片に支持された枝に突き刺し可能な複数の突き刺し刃を一方の側縁に有し、これらの突き刺し刃の一部が枝を保持した状態で、前記鋸本体を往復動して当該枝を切断する。   (1) A branch cutting saw according to the present invention is a branch cutting saw fixed to a distal end portion of a long operation rod, and a single-edged saw body extending in a direction in which the operation rod extends, and a proximal end portion Is connected to the distal end portion of the operating rod so as to be rotatable, the distal end portion extends in a direction opposite to the direction in which the blade of the saw body is formed, and the base end portion is the distal end of the swing plate. A hook-shaped clasp plate extending beyond the saw body and the tip of the swinging plate away from the saw body so that the tip part intersects with the saw body. And a biasing force for closing the swing plate and the clasp plate so that the swing plate and the clasp plate overlap each other. A second spring member, wherein the saw body projects in the same direction as a direction in which the blade of the saw body is formed, and receives and supports the branches. And a clasp plate that has a plurality of piercing blades on one side edge facing the protruding piece and capable of being pierced into a branch supported by the protruding piece, With a part of these piercing blades holding a branch, the saw body is reciprocated to cut the branch.

(2)本発明による枝切り用鋸は、前記鋸本体を間にして、前記揺動板、前記留め金板、前記第1ばね部材、及び前記第2ばね部材を前記鋸本体の両側に一対に配置してもよい。   (2) The branch cutting saw according to the present invention has a pair of the swing plate, the clasp plate, the first spring member, and the second spring member on both sides of the saw body with the saw body in between. You may arrange in.

(3)前記留め金板は、枝を前記突出片に引き込むように、内側に湾曲した湾曲部を先端部側に有することが好ましい。   (3) It is preferable that the said clasp board has a curved part curved inward on the front-end | tip part side so that a branch may be drawn in to the said protrusion piece.

(4)前記留め金板は、前記鋸本体の刃と干渉しないように、当該鋸本体と反対側に屈曲した屈曲片を他方の側縁に有することが好ましい。   (4) It is preferable that the said clasp plate has the bending piece bent in the other side edge so that it may not interfere with the blade of the said saw main body.

(5)前記留め金板は、前記鋸本体の刃と干渉しないように、複数の前記突き刺し刃が当該鋸本体と反対側に屈曲していることが好ましい。   (5) It is preferable that a plurality of the stab blades bend to the opposite side to the saw body so that the clasp plate does not interfere with the blades of the saw body.

(6)前記第1ばね部材及び前記第2ばね部材は、ねじりコイルばねからなり、前記第1ばね部材及び前記第2ばね部材は、それらのばね圧を調整可能に配置されていることが好ましい。   (6) It is preferable that the first spring member and the second spring member are torsion coil springs, and the first spring member and the second spring member are arranged so that their spring pressures can be adjusted. .

本発明による枝切り用鋸は、揺動板と留め金板で構成されたリンク装置を操作棒の先端部に備え、留め金板に設けた突き刺し刃が枝を保持した状態で、鋸本体を往復動すると、鋸本体が枝から離間しないように、留め金板が枝に追従して前記リンク装置を変形させるので、鋸本体が枝の切り口から外れ難くなる。したがって、作業者の労力を軽減できる。   The branch cutting saw according to the present invention comprises a link device composed of a swing plate and a clasp plate at the tip of the operating rod, and the stab blade provided on the clasp plate holds the branch in the state where the branch is held. When reciprocating, the clasp plate follows the branch and deforms the link device so that the saw body does not separate from the branch, so that the saw body does not easily come off from the cut end of the branch. Therefore, the labor of the operator can be reduced.

又、本発明による枝切り用鋸は、エンジンなどを設けない、簡易な構成の手動操作式の枝切り用鋸であるので、持ち運びに便利である。   The branch cutting saw according to the present invention is a hand-operated branch cutting saw having a simple configuration without an engine or the like, and is therefore convenient to carry.

本発明の第1実施形態による枝切り用鋸の構成を示す図であり、図1(A)は、第1実施形態による枝切り用鋸の正面図、図1(B)は、図1(A)の右側面図である。It is a figure which shows the structure of the saw for cutting by 1st Embodiment of this invention, FIG. 1 (A) is a front view of the saw for cutting by 1st Embodiment, FIG.1 (B) is FIG. It is a right view of A). 第1実施形態による枝切り用鋸の正面図であり、第1実施形態による枝切り用鋸に備わる鋸本体を引いて、枝が鋸本体の先端部側に相対的に移動した状態図である。FIG. 3 is a front view of the branch cutting saw according to the first embodiment, and is a state diagram in which the branch is moved relatively to the tip side of the saw body by pulling the saw body included in the branch cutting saw according to the first embodiment. . 第1実施形態による枝切り用鋸の部分図であり、図3(A)は、第1実施形態による枝切り用鋸の要部を拡大した正面図、図3(B)は、図3(A)のA−A矢視断面図である。FIG. 3A is a partial view of a pruning saw according to the first embodiment, FIG. 3A is an enlarged front view of a main part of the pruning saw according to the first embodiment, and FIG. It is AA arrow sectional drawing of A). 第1実施形態による枝切り用鋸の正面図であり、第1実施形態による枝切り用鋸に備わる鋸本体を下方に引いたときの状態変化を想像線で示している。It is a front view of the saw for branching by 1st Embodiment, and the state change when the saw main body with which the saw for branching by 1st Embodiment is equipped is pulled down is shown with the imaginary line. 第1実施形態による枝切り用鋸の正面図であり、第1実施形態による枝切り用鋸に備わる鋸本体を上方に押し上げたときの状態変化を想像線で示している。It is a front view of the saw for cutting by 1st Embodiment, and the state change when the saw main body with which the saw for branch cutting by 1st Embodiment is pushed up is shown by the imaginary line. 本発明の第2実施形態による枝切り用鋸の構成を示す右側面図である。It is a right view which shows the structure of the saw for branch cutting by 2nd Embodiment of this invention.

以下、本発明の実施形態について、図面を参照しながら詳細に説明する。
[第1実施形態]
(枝切り用鋸の構成)
最初に、本発明の第1実施形態による枝切り用鋸の構成を説明する。図1は、本発明の第1実施形態による枝切り用鋸の構成を示す図であり、図1(A)は、第1実施形態による枝切り用鋸の正面図、図1(B)は、図1(A)の右側面図である。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
(Structure of branch cutting saw)
First, the configuration of the branch cutting saw according to the first embodiment of the present invention will be described. FIG. 1 is a diagram showing a configuration of a pruning saw according to the first embodiment of the present invention. FIG. 1A is a front view of the pruning saw according to the first embodiment, and FIG. FIG. 2 is a right side view of FIG.

図2は、第1実施形態による枝切り用鋸の正面図であり、第1実施形態による枝切り用鋸に備わる鋸本体を引いて、枝が鋸本体の先端部側に相対的に移動した状態図である。図3は、第1実施形態による枝切り用鋸の部分図であり、図3(A)は、第1実施形態による枝切り用鋸の要部を拡大した正面図、図3(B)は、図3(A)のA−A矢視断面図である。   FIG. 2 is a front view of the pruning saw according to the first embodiment. The main body of the pruning saw according to the first embodiment is pulled to move the branch relatively to the tip side of the saw body. It is a state diagram. FIG. 3 is a partial view of the pruning saw according to the first embodiment. FIG. 3A is an enlarged front view of the main part of the pruning saw according to the first embodiment, and FIG. FIG. 4 is a cross-sectional view taken along the line AA in FIG.

図1又は図2を参照すると、本発明の第1実施形態による枝切り用鋸10は、長尺の操作棒1と片刃の鋸本体2を備えている。操作棒1は、中空のパイプ部材で構成することが好ましく、電気的に絶縁性を有することが好ましい。操作棒1は、複数のパイプ部材を連結して構成してもよく、基端部を確実に把持できることが好ましい。   Referring to FIG. 1 or FIG. 2, a pruning saw 10 according to a first embodiment of the present invention includes a long operation rod 1 and a single-edged saw body 2. The operation rod 1 is preferably composed of a hollow pipe member, and preferably has electrical insulation. The operation rod 1 may be configured by connecting a plurality of pipe members, and it is preferable that the proximal end portion can be reliably gripped.

図1又は図2を参照すると、鋸本体2は、操作棒1の先端部に着脱自在に固定されている。鋸本体2は、多数の刃2aを一方の側縁に形成している。図示された鋸本体2は、多数の刃2aが形成される側縁を内側に緩やかに湾曲して、カーブに沿って枝を切断する、いわゆる高枝鋸であるが、この高枝鋸も本発明が規定する操作棒1が伸長する方向に延びる片刃の鋸本体に含まれる。又、図示された鋸本体2は、引くときに材料を切断する構造を採用している。   Referring to FIG. 1 or FIG. 2, the saw body 2 is detachably fixed to the distal end portion of the operation rod 1. The saw body 2 has a large number of blades 2a formed on one side edge. The illustrated saw body 2 is a so-called high-edged saw in which a side edge where a large number of blades 2a are formed is gently curved inward, and a branch is cut along the curve. The operating rod 1 to be defined is included in a single-edged saw body extending in the extending direction. The illustrated saw body 2 employs a structure that cuts material when pulled.

又、図1又は図2を参照すると、鋸本体2は、突出片2bを基端部に有している。突出片2bは、多数の刃2aが形成される方向と同じ方向に突出している。そして、突出片2bは、枝Brを受け入れて支持することができる。突出片2bは、鋸本体2と一体に形成してもよく、鋸本体2と別体に構成してもよい。   1 or 2, the saw body 2 has a protruding piece 2b at the base end. The protruding piece 2b protrudes in the same direction as the direction in which many blades 2a are formed. The protruding piece 2b can receive and support the branch Br. The protruding piece 2b may be formed integrally with the saw body 2 or may be formed separately from the saw body 2.

図1から図3を参照すると、枝切り用鋸10は、帯状の揺動板3と鉤状の留め金板4を備えている。揺動板3は、その基端部が操作棒1の先端部に設けた支軸31aと回動可能に連結している。又、揺動板3は、その先端部が鋸本体2の刃2aが形成される方向と反対側に延びている。操作棒1の先端部には、ストップピン31pを設けている。揺動板3は、その一辺がストップピン31pに当接して、時計方向の回動が規制されている。   Referring to FIGS. 1 to 3, the branch cutting saw 10 includes a band-shaped swing plate 3 and a hook-shaped clasp plate 4. The swing plate 3 has a base end portion rotatably connected to a support shaft 31 a provided at the tip end portion of the operation rod 1. Further, the tip of the swing plate 3 extends on the opposite side to the direction in which the blade 2a of the saw body 2 is formed. A stop pin 31p is provided at the tip of the operation rod 1. One side of the rocking plate 3 is in contact with the stop pin 31p, and the clockwise rotation is restricted.

図1から図3を参照すると、留め金板4は、その基端部が揺動板3の先端部と連結ピン41aで回動可能に連結している。又、留め金板4は、その先端部が鋸本体2と交差するように、鋸本体2を越えて延びている。留め金板4は、ストップピン41pを基端部側に設けている(図3参照)。ストップピン41pが揺動板3の他辺に当接して、揺動板3と留め金板4の交差角度が規制されている。   Referring to FIGS. 1 to 3, the clasp plate 4 has a base end portion rotatably connected to a distal end portion of the swing plate 3 by a connecting pin 41 a. In addition, the clasp plate 4 extends beyond the saw body 2 so that the front end thereof intersects the saw body 2. The clasp plate 4 is provided with a stop pin 41p on the base end side (see FIG. 3). The stop pin 41p is in contact with the other side of the swing plate 3, and the crossing angle between the swing plate 3 and the clasp plate 4 is regulated.

図1から図3を参照すると、留め金板4は、内側に湾曲した湾曲部41を先端部側に有している。操作棒1を操作して、湾曲部41で枝Brを係合して突出片2bに引き込むことができる(図1参照)。   Referring to FIGS. 1 to 3, the clasp plate 4 has a curved portion 41 that is curved inward on the distal end side. The operating rod 1 can be operated to engage the branch Br with the bending portion 41 and pull it into the protruding piece 2b (see FIG. 1).

図1又は図3を参照すると、留め金板4は、屈曲片4bを他方の側縁に有している。屈曲片4bは、鋸本体2と反対側に屈曲しており、留め金板4が鋸本体2と交差したときに、留め金板4の他方の側縁が鋸本体2の刃2aと干渉しないようになっている。   Referring to FIG. 1 or FIG. 3, the clasp plate 4 has a bent piece 4b on the other side edge. The bent piece 4b is bent to the opposite side of the saw body 2, and when the clasp plate 4 intersects the saw body 2, the other side edge of the clasp plate 4 does not interfere with the blade 2a of the saw body 2. It is like that.

図1から図3を参照すると、留め金板4は、複数の突き刺し刃4aを一方の側縁に有している。これらの突き刺し刃4aは、突出片2bと対向するように配置されている(図1参照)。そして、操作棒1を操作して、突出片2bに支持された枝Brに突き刺し刃4aを突き刺すことができる。   1 to 3, the clasp plate 4 has a plurality of piercing blades 4a on one side edge. These piercing blades 4a are arranged so as to face the protruding piece 2b (see FIG. 1). Then, by operating the operation rod 1, the piercing blade 4a can be pierced into the branch Br supported by the protruding piece 2b.

図3(B)を参照すると、複数の突き刺し刃4aは、鋸本体2と反対側に屈曲しており、留め金板4が鋸本体2と交差したときに、複数の突き刺し刃4aが鋸本体2の刃2aと干渉しないようになっている(図1又は図2参照)。   Referring to FIG. 3B, the plurality of stab blades 4 a are bent to the opposite side of the saw body 2, and when the clasp plate 4 intersects the saw body 2, the plurality of stab blades 4 a become the saw body. 2 so as not to interfere with the two blades 2a (see FIG. 1 or FIG. 2).

図1から図3を参照すると、枝切り用鋸10は、第1ばね部材5と第2ばね部材6を備えている。実施形態では、第1ばね部材5及び第2ばね部材6は、それぞれねじりコイルばねを用いている。   Referring to FIGS. 1 to 3, the pruning saw 10 includes a first spring member 5 and a second spring member 6. In the embodiment, the first spring member 5 and the second spring member 6 each use a torsion coil spring.

図1又は図2を参照すると、第1ばね部材5は、そのコイル部が支軸31aに係合されている。又、第1ばね部材5は、一方のアームの端部が操作棒1の先端部に係止し、他方のアームの端部が揺動板3の他辺に係止している。そして、第1ばね部材5は、揺動板3の先端部が鋸本体2から遠ざかるように、支軸31aを中心に揺動板3を時計方向に回動させる力を付勢している。   Referring to FIG. 1 or FIG. 2, the coil portion of the first spring member 5 is engaged with the support shaft 31a. In the first spring member 5, the end of one arm is locked to the tip of the operating rod 1, and the end of the other arm is locked to the other side of the swing plate 3. The first spring member 5 urges a force that rotates the swing plate 3 clockwise about the support shaft 31a so that the tip of the swing plate 3 moves away from the saw body 2.

一方、図1又は図2を参照すると、第2ばね部材6は、そのコイル部が連結ピン41aに係合されている。又、第2ばね部材6は、一方のアームの端部が揺動板3の一辺に係止し、他方のアームの端部が留め金板4の他方の側縁に係止している。そして、第2ばね部材6は、揺動板3と留め金板4が折り重なるように、揺動板3と留め金板4が閉じる力を付勢している。   On the other hand, referring to FIG. 1 or FIG. 2, the coil portion of the second spring member 6 is engaged with the connecting pin 41a. Further, the end of one arm of the second spring member 6 is locked to one side of the swing plate 3, and the end of the other arm is locked to the other side edge of the clasp plate 4. The second spring member 6 urges the closing force of the swing plate 3 and the clasp plate 4 so that the swing plate 3 and the clasp plate 4 overlap each other.

図3を参照すると、揺動板3は、複数の穴31hを一端部側に開口している。これらの穴31hの中から一つを選択して、第1ばね部材5の他方のアームの端部を係止することにより、第1ばね部材5のばね圧(ねじりモーメント)を調整できる。例えば、鋸本体2の刃2aが枝Brの切り口に食い込み易くするために、第1ばね部材5のばね圧を強くすることも可能である。   Referring to FIG. 3, the swing plate 3 has a plurality of holes 31 h opened at one end side. By selecting one of these holes 31h and locking the end of the other arm of the first spring member 5, the spring pressure (torsional moment) of the first spring member 5 can be adjusted. For example, the spring pressure of the first spring member 5 can be increased so that the blade 2a of the saw body 2 can easily bite into the cut end of the branch Br.

又、図3を参照すると、揺動板3は、複数の穴32hを他端部側に開口している。これらの穴32hの中から一つを選択して、第2ばね部材6の一方のアームの端部を係止することにより、第2ばね部材6のばね圧(ねじりモーメント)を調整できる。例えば、大きな外形の枝Brを切断するときは、揺動板3と留め金板4が大きく閉角できるように、第2ばね部材6のばね圧を弱くすることも可能である。   Referring to FIG. 3, the swing plate 3 has a plurality of holes 32 h opened to the other end side. By selecting one of these holes 32h and locking the end of one arm of the second spring member 6, the spring pressure (torsional moment) of the second spring member 6 can be adjusted. For example, when cutting a branch Br having a large outer shape, the spring pressure of the second spring member 6 can be weakened so that the swing plate 3 and the clasp plate 4 can be largely closed.

(枝切り用鋸の作用)
次に、第1実施形態による枝切り用鋸10の動作を説明しながら、枝切り用鋸10の作用及び効果を説明する。図4は、第1実施形態による枝切り用鋸の正面図であり、第1実施形態による枝切り用鋸に備わる鋸本体を下方に引いたときの状態変化を想像線で示している。図5は、第1実施形態による枝切り用鋸の正面図であり、第1実施形態による枝切り用鋸に備わる鋸本体を上方に押し上げたときの状態変化を想像線で示している。
(The action of a saw for cutting branches)
Next, the operation and effect of the branch cutting saw 10 will be described while explaining the operation of the branch cutting saw 10 according to the first embodiment. FIG. 4 is a front view of the pruning saw according to the first embodiment, and shows an imaginary change in state when the saw body included in the pruning saw according to the first embodiment is pulled downward. FIG. 5 is a front view of the pruning saw according to the first embodiment, and shows an imaginary line when the saw body included in the pruning saw according to the first embodiment is pushed upward.

最初に、枝切り用鋸10に備わる鋸本体2を下方に引いたときの動作を説明する。図1を参照して、枝切り用鋸10を上方に持ち上げて、湾曲部41で枝Brを係合して突出片2bに引き込み、突出片2bに支持された枝Erに突き刺し刃4aを突き刺して、予め、突き刺し刃4aの一部で枝Brを保持しておく。   First, the operation when the saw body 2 provided in the branch cutting saw 10 is pulled downward will be described. Referring to FIG. 1, the branch cutting saw 10 is lifted upward, the branch Br is engaged with the bending portion 41 and pulled into the protruding piece 2b, and the piercing blade 4a is pierced into the branch Er supported by the protruding piece 2b. The branch Br is previously held by a part of the piercing blade 4a.

次に、図4を参照して、図4の実線で示された状態から、矢印a1の方向に操作棒1を下げると、鋸本体2に対して枝Brが相対的に矢印b1の方向に移動する。この間、留め金板4が枝Brに追従し、揺動板3と留め金板4が開角すると共に、揺動板3が反時計方向に回動する。   Next, referring to FIG. 4, when the operating rod 1 is lowered in the direction of the arrow a1 from the state shown by the solid line in FIG. 4, the branch Br is relatively moved in the direction of the arrow b1 with respect to the saw body 2. Moving. During this time, the clasp plate 4 follows the branch Br, the swing plate 3 and the clasp plate 4 are opened, and the swing plate 3 rotates counterclockwise.

図4を参照して、鋸本体2に対して枝Brが相対的に矢印b1の方向に移動している間は、第1ばね部材5は、揺動板3を時計方向に回転させる力F1を付勢している。又、第2ばね部材6は、揺動板3と留め金板4が閉角する力F2を付勢している。そして、これらの力F1と力F2の合力は、鋸本体2の刃2aが枝Brに向かう力として作用する。したがって、枝Brの切断を容易にすると共に、鋸本体2の刃2aが枝Brの切り口から離れ難く作用する。   Referring to FIG. 4, while the branch Br moves relative to the saw body 2 in the direction of the arrow b1, the first spring member 5 causes the force F1 to rotate the swing plate 3 in the clockwise direction. Is energized. Further, the second spring member 6 biases a force F <b> 2 that closes the swing plate 3 and the clasp plate 4. And the resultant force of these forces F1 and F2 acts as a force of the blade 2a of the saw body 2 toward the branch Br. Therefore, the cutting of the branch Br is facilitated, and the blade 2a of the saw body 2 acts so as not to be separated from the cut end of the branch Br.

図4を参照して、以下、同様に、矢印a2及び矢印a3の方向に操作棒1を下げると、鋸本体2に対して枝Brが相対的に矢印b2及び矢印b3の方向に移動する。この間、留め金板4が枝Brに追従し、揺動板3と留め金板4が開角すると共に、揺動板3が反時計方向に回動する。そして、枝Brの切り口が深くなるのにしたがって、力F1と力F2の合力が強くなっていくので、これに比例して、鋸本体2の刃2aが枝Brの切り口から離れ難く作用する。   Referring to FIG. 4, similarly, when the operating rod 1 is lowered in the directions of arrows a2 and a3, the branch Br moves relative to the saw body 2 in the directions of arrows b2 and b3. During this time, the clasp plate 4 follows the branch Br, the swing plate 3 and the clasp plate 4 are opened, and the swing plate 3 rotates counterclockwise. Then, as the cut end of the branch Br becomes deeper, the resultant force of the force F1 and the force F2 becomes stronger, and in proportion to this, the blade 2a of the saw body 2 acts hard to separate from the cut end of the branch Br.

次に、枝切り用鋸10に備わる鋸本体2を上方に押し上げたときの動作を説明する。図5を参照して、切断途上の枝Brが鋸本体2の先端部側に位置している状態から、矢印c1の方向に操作棒1を上げると、鋸本体2に対して枝Brが相対的に矢印d1の方向に移動する。この間、留め金板4が枝Brに追従し、揺動板3と留め金板4が閉角すると共に、揺動板3が反時計方向に回動する。   Next, the operation when the saw body 2 provided in the branch cutting saw 10 is pushed upward will be described. Referring to FIG. 5, when the operating rod 1 is raised in the direction of the arrow c <b> 1 from the state where the branch Br being cut is located on the tip end side of the saw body 2, the branch Br is relative to the saw body 2. Move in the direction of the arrow d1. During this time, the clasp plate 4 follows the branch Br, the swing plate 3 and the clasp plate 4 are closed, and the swing plate 3 rotates counterclockwise.

図5を参照して、鋸本体2に対して枝Brが相対的に矢印d1の方向に移動している間は、第1ばね部材5は、揺動板3を時計方向に回転させる力F1を付勢している。又、第2ばね部材6は、揺動板3と留め金板4が閉角する力F2を付勢している。そして、これらの力F1と力F2の合力は、鋸本体2の刃2aが枝Brに向かう力として作用する。したがって鋸本体2の刃2aが枝Brの切り口から離れ難く作用する。   Referring to FIG. 5, while the branch Br moves relative to the saw body 2 in the direction of the arrow d1, the first spring member 5 causes the force F1 to rotate the swing plate 3 in the clockwise direction. Is energized. Further, the second spring member 6 biases a force F <b> 2 that closes the swing plate 3 and the clasp plate 4. And the resultant force of these forces F1 and F2 acts as a force of the blade 2a of the saw body 2 toward the branch Br. Therefore, the blade 2a of the saw body 2 acts so as not to easily leave the cut end of the branch Br.

図5を参照して、以下、同様に、矢印c2及び矢印c3の方向に操作棒1を上げると、鋸本体2に対して枝Brが相対的に矢印d2及び矢印d3の方向に移動する。この間、留め金板4が枝Brに追従し、揺動板3と留め金板4が閉角すると共に、揺動板3が時計方向に回動する。そして、力F1と力F2の合力が鋸本体2の刃2aが枝Brの切り口から離れ難く作用する。   Referring to FIG. 5, similarly, when the operating rod 1 is raised in the directions of arrows c2 and c3, the branch Br moves relative to the saw body 2 in the directions of arrows d2 and d3. During this time, the clasp plate 4 follows the branch Br, the swing plate 3 and the clasp plate 4 are closed, and the swing plate 3 is rotated clockwise. And the resultant force of the force F1 and the force F2 acts so that the blade 2a of the saw body 2 is difficult to separate from the cut end of the branch Br.

このように、第1実施形態による枝切り用鋸10は、図4に示された動作と図5に示された動作を交互に繰り返すことにより、鋸本体2が枝Brの切り口から外れることなく、高所の枝Brを容易に切断できる。   As described above, the branch cutting saw 10 according to the first embodiment repeats the operation shown in FIG. 4 and the operation shown in FIG. 5 alternately so that the saw body 2 does not come off the cut end of the branch Br. The high-branch branch Br can be easily cut.

図1から図5を参照すると、枝切り用鋸10は、揺動板3と留め金板4で構成されたリンク装置を操作棒1の先端部に備え、留め金板4に設けた突き刺し刃4aが枝Brを保持した状態で、鋸本体2を往復動すると、鋸本体2が枝Brから離間しないように、留め金板4が枝Brに追従して前記リンク装置を変形させるので、鋸本体2が枝Brの切り口から外れ難くなる。したがって、作業者の労力を軽減できる。   Referring to FIGS. 1 to 5, a pruning saw 10 is provided with a link device composed of a rocking plate 3 and a clasp plate 4 at the tip of the operating rod 1, and a piercing blade provided on the clasp plate 4. When the saw body 2 is reciprocated with the branch 4 holding the branch Br, the clasp plate 4 follows the branch Br and deforms the link device so that the saw body 2 is not separated from the branch Br. It becomes difficult for the main body 2 to come off from the cut end of the branch Br. Therefore, the labor of the operator can be reduced.

又、図1から図5を参照すると、第1実施形態による枝切り用鋸10は、エンジンなどを設けない、簡易な構成の手動操作式の枝切り用鋸であるので、例えば、傾斜の多い山間部を作業員が持ち運ぶには便利である。   Referring to FIGS. 1 to 5, the pruning saw 10 according to the first embodiment is a hand-operated pruning saw having a simple configuration without an engine or the like. It is convenient for workers to carry mountains.

[第2実施形態]
次に、本発明の第2実施形態による枝切り用鋸の構成及び作用を説明する。図6は、本発明の第2実施形態による枝切り用鋸の構成を示す右側面図である。なお、第1実施形態で用いた符号と同じ符号を有する構成品は、その作用を同一とするので、説明を省略する場合がある。
[Second Embodiment]
Next, the configuration and operation of the branch cutting saw according to the second embodiment of the present invention will be described. FIG. 6 is a right side view showing the configuration of a pruning saw according to the second embodiment of the present invention. Note that components having the same reference numerals as those used in the first embodiment have the same operation, and thus the description thereof may be omitted.

図6を参照すると、本発明の第2実施形態による枝切り用鋸20は、鋸本体2を間にして、揺動板3、留め金板4、第1ばね部材5、及び第2ばね部材6を鋸本体2の両側に一対に配置している。枝切り用鋸20は、一対の留め金板4・4で枝Brを突出片2bに引き込むことができる(図1(A)参照)。枝切り用鋸20は、一対の留め金板4・4で枝Brを保持できる(図4参照)。   Referring to FIG. 6, a pruning saw 20 according to a second embodiment of the present invention includes a swing plate 3, a clasp plate 4, a first spring member 5, and a second spring member with the saw body 2 interposed therebetween. 6 are arranged in a pair on both sides of the saw body 2. The branch cutting saw 20 can draw the branch Br into the protruding piece 2b with a pair of clasp plates 4 and 4 (see FIG. 1A). The branch cutting saw 20 can hold the branch Br by a pair of clasp plates 4 and 4 (see FIG. 4).

第2実施形態による枝切り用鋸20は、第1実施形態による枝切り用鋸10と同様な効果を奏する他に、一対の留め金板4・4で枝Brを確実に保持できるというメリットがある。   The branch cutting saw 20 according to the second embodiment has the advantage that the branch Br can be securely held by the pair of clasp plates 4 and 4 in addition to the same effect as the branch cutting saw 10 according to the first embodiment. is there.

本発明による枝切り用鋸を用いれば、以下の効果が期待できる。
(1)従来の枝切り作業に比べて、作業時間を短縮できる。
(2)枝切り作業に伴う労力を軽減できる。
(3)高度な伐採技能を必要としなくなる。
(4)樹木に登ることなく高所の枝を切断できるので、作業員の安全が確保される。
If the saw for cutting according to the present invention is used, the following effects can be expected.
(1) The working time can be shortened compared to the conventional branch cutting work.
(2) It is possible to reduce the labor involved in the cutting operation.
(3) No need for advanced logging skills.
(4) Since branches at high places can be cut without climbing trees, the safety of workers is ensured.

本発明は、架空線又は送電線の障害となる樹木を伐採するために好適な枝切り用鋸を開示したが、本発明による枝切り用鋸は、高所の枝を剪定又は間伐する高枝鋸として使用することもでき、用途は限定されない。   Although the present invention has disclosed a pruning saw suitable for cutting a tree that becomes an obstacle to an overhead line or a transmission line, the pruning saw according to the present invention is a high-pitch saw that prunes or thins a branch in a high place. Can be used as well, and the application is not limited.

1 操作棒
2 鋸本体
2a 刃(鋸本体の刃)
2b 突出片
3 揺動板
4 留め金板
4a 突き刺し刃
5 第1ばね部材
6 第2ばね部材
10 枝切り用鋸
Br 枝
1 Operation rod 2 Saw body 2a Blade (saw body blade)
2b Protruding piece 3 Oscillating plate 4 Clasp plate 4a Piercing blade 5 First spring member 6 Second spring member 10 Saw for branching Br Branch

Claims (6)

長尺の操作棒の先端部に固定された枝切り用鋸であって、
前記操作棒が伸長する方向に延びる片刃の鋸本体と、
基端部が前記操作棒の先端部と回動可能に連結し、先端部が前記鋸本体の刃が形成される方向と反対側に延びる帯状の揺動板と、
基端部が前記揺動板の先端部と回動可能に連結し、先端部が前記鋸本体と交差するように、当該鋸本体を越えて延びる鉤状の留め金板と、
前記揺動板の先端部が前記鋸本体から遠ざかるように、当該揺動板を回動させる力を付勢する第1ばね部材と、
前記揺動板と前記留め金板が折り重なるように、前記揺動板と前記留め金板が閉じる力を付勢する第2ばね部材と、を備え、
前記鋸本体は、当該鋸本体の刃が形成される方向と同じ方向に突出し、枝を受け入れて支持可能な突出片を基端部に有し、
前記留め金板は、前記突出片と対向し、当該突出片に支持された枝に突き刺し可能な複数の突き刺し刃を一方の側縁に有し、
これらの突き刺し刃の一部が枝を保持した状態で、前記鋸本体を往復動して当該枝を切断する枝切り用鋸。
A saw for branch cutting fixed to the tip of a long operating rod,
A single-edged saw body extending in the direction in which the operating rod extends;
A band-like rocking plate having a base end portion rotatably connected to a tip end portion of the operation rod, and a tip end portion extending on a side opposite to a direction in which a blade of the saw body is formed;
A hook-shaped clasp plate extending beyond the saw body such that the base end portion is rotatably connected to the tip portion of the swing plate, and the tip portion intersects the saw body;
A first spring member that urges a force to rotate the swing plate so that the tip of the swing plate moves away from the saw body;
A second spring member for urging the closing force of the swing plate and the clasp plate so that the swing plate and the clasp plate are folded,
The saw body protrudes in the same direction as a direction in which the blade of the saw body is formed, and has a protruding piece at the base end portion that can receive and support a branch,
The clasp plate has a plurality of piercing blades on one side edge facing the protruding piece and capable of being pierced into a branch supported by the protruding piece,
A branch cutting saw that reciprocates the saw body in a state where a part of these piercing blades holds the branch and cuts the branch.
前記鋸本体を間にして、前記揺動板、前記留め金板、前記第1ばね部材、及び前記第2ばね部材を前記鋸本体の両側に一対に配置している請求項1記載の枝切り用鋸。   2. The branch cutter according to claim 1, wherein a pair of the swing plate, the clasp plate, the first spring member, and the second spring member are disposed on both sides of the saw body with the saw body interposed therebetween. Saw. 前記留め金板は、枝を前記突出片に引き込むように、内側に湾曲した湾曲部を先端部側に有する請求項1又は2記載の枝切り用鋸。   3. The saw for cutting branches according to claim 1, wherein the clasp plate has a curved portion that is curved inward on the tip end side so as to draw the branch into the protruding piece. 前記留め金板は、前記鋸本体の刃と干渉しないように、当該鋸本体と反対側に屈曲した屈曲片を他方の側縁に有する請求項1から3のいずれかに記載の枝切り用鋸。   The branch cutting saw according to any one of claims 1 to 3, wherein the clasp plate has a bent piece bent on the opposite side to the saw body so as not to interfere with a blade of the saw body. . 前記留め金板は、前記鋸本体の刃と干渉しないように、複数の前記突き刺し刃が当該鋸本体と反対側に屈曲している請求項1から3のいずれかに記載の枝切り用鋸。   The branch cutting saw according to any one of claims 1 to 3, wherein the clasp plate has a plurality of piercing blades bent to the opposite side of the saw body so as not to interfere with the blade of the saw body. 前記第1ばね部材及び前記第2ばね部材は、ねじりコイルばねからなり、
前記第1ばね部材及び前記第2ばね部材は、それらのばね圧を調整可能に配置されている請求項1から5のいずれかに記載の枝切り用鋸。
The first spring member and the second spring member are torsion coil springs,
The branch cutting saw according to any one of claims 1 to 5, wherein the first spring member and the second spring member are arranged so that their spring pressures can be adjusted.
JP2011038871A 2011-02-24 2011-02-24 Pruning saw Withdrawn JP2012170450A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112106545A (en) * 2020-08-19 2020-12-22 浙江理工大学 Electric high branch cutting and sawing dual-purpose device capable of hanging cutting and sawing operation and cutting and sawing method thereof
CN115968664A (en) * 2022-12-14 2023-04-18 贵州电网有限责任公司 Insulating rod of obstacle clearing sickle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112106545A (en) * 2020-08-19 2020-12-22 浙江理工大学 Electric high branch cutting and sawing dual-purpose device capable of hanging cutting and sawing operation and cutting and sawing method thereof
CN115968664A (en) * 2022-12-14 2023-04-18 贵州电网有限责任公司 Insulating rod of obstacle clearing sickle
CN115968664B (en) * 2022-12-14 2024-06-04 贵州电网有限责任公司 Obstacle-removing sickle insulating rod

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