JP4471437B2 - Electric cutter - Google Patents

Electric cutter Download PDF

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Publication number
JP4471437B2
JP4471437B2 JP2000011497A JP2000011497A JP4471437B2 JP 4471437 B2 JP4471437 B2 JP 4471437B2 JP 2000011497 A JP2000011497 A JP 2000011497A JP 2000011497 A JP2000011497 A JP 2000011497A JP 4471437 B2 JP4471437 B2 JP 4471437B2
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JP
Japan
Prior art keywords
blade
movable blade
drive gear
base
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2000011497A
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Japanese (ja)
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JP2001204251A (en
Inventor
清 嘉本
守夫 手銭
優生 山田
信次 森脇
良水 藤岡
正郎 中島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chugoku Electric Power Co Inc
Sanwa Tekki Corp
Original Assignee
Chugoku Electric Power Co Inc
Sanwa Tekki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chugoku Electric Power Co Inc, Sanwa Tekki Corp filed Critical Chugoku Electric Power Co Inc
Priority to JP2000011497A priority Critical patent/JP4471437B2/en
Publication of JP2001204251A publication Critical patent/JP2001204251A/en
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Publication of JP4471437B2 publication Critical patent/JP4471437B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
この発明は、竹や立ち木を地上5〜6mの位置で切断して芯止めする作業等に使用するのに適した電動カッタに関するものである。
【0002】
【従来の技術】
従来、電動ケーブルカッタとして、例えば特開平6−335820号の公報に記載されたものが知られている。この電動ケーブルカッタは、電動モータに結合され出力軸に駆動ギアを有する減速機構と、この減速機構の固定部に固定される固定刃と、この固定刃に回動自在に枢着され外周縁に扇形歯車を有する回転刃とを具備し、回転刃の扇形歯車が減速機構の駆動ギアに噛み合っている。そして、固定刃と回転刃との間にケーブルを挟み、回転刃を電動モータ駆動で固定刃と交差させるように回動させてケーブルを切断するものである。回転刃の扇形歯車が歯列の端を超えて駆動ギアから離脱した状態で固定刃と回転刃との間が開放されるので、両者間に側方からケーブルを挿入できるようになっている。そして、固定刃と回転刃との間にケーブルを挿入してから、扇形歯車の端を駆動ギアに噛み合わせるように回転刃をセットし、切断動作を行う。
【0003】
【発明が解決しようとする課題】
上記従来の電動カッタは、扇形歯車の端を駆動ギアに噛み合わせるために、手元で回転刃のセットを行う必要があるから、手元から離れた高所にある切断対象を地上から切断するような作業には使用できないし、手元での切断作業でも回転刃のセット操作が面倒であるという難点がある。
従って、本発明は、切断動作前に回転刃のセットを手元で行う必要がなく、手元から離れた位置にある切断対象を切断する場合でも、いちいち手元へ戻さずに切断作業を継続することができる電動カッタを提供することを課題としている。
【0004】
【課題を解決するための手段】
本発明においては、上記課題を解決するため、ベース1に電動モータ2につながる減速機3と固定刃4とを固定し、減速機3の出力軸には駆動ギア5を固定する。固定刃4には可動刃6の中間部を枢着し、可動刃6の基端側の半月ギア8を駆動ギア5に噛み合わせる。そして、可動刃6とベース1との間にばね9を介設し、可動刃6の最大開放位置又は最大交差位置において電動モータ2が回転を継続するときに、半月ギア8の端部の歯と駆動ギア5の歯とを接触を保ちながら滑らせて、駆動ギア5の逆転時に半月ギア8を継続噛合させるようにして電動カッタを構成した。
【0005】
【発明の実施の形態】
図面を参照して本発明の一実施形態を説明する。図1はカッタの刃を開放した状態の正面図、図2はカッタの刃の中立状態の正面図、図3はカッタの刃を交差させた状態の正面図、図4はカッタの使用状態の説明図である。
【0006】
図において、1は機体ベースで、このベース1に、モータ2、減速機3、固定刃4が固定されている。減速機3はモータ2に連結され、出力軸には駆動ギア5が固着されている。
【0007】
固定刃4は、中間部を境に先端側に円弧状の刃部4aを、また基端側に柄部4bを有し、柄部4bの基端においてベース1に固定されている。
【0008】
固定刃4の中間部には、可動刃6の中間部が枢軸7で枢着されている。可動刃6は、中間部を境に先端側に円弧状の刃部6aを、また基端側に柄部6bを有する。刃部6aは、固定刃4の刃部4aと対向し、両者間に竹や立ち木のような切断対象Aを包囲するように配置されている。柄部6bの基端には、半月ギア8が固着されている。半月ギア8は、円弧状の周縁に歯列を備えており、これが駆動ギア5に噛み合っている。従って、可動刃6は、モータ2の正逆回転により、刃部6aを固定刃4の刃部4aに対して相互間を開放し(図1)、又は閉鎖するように交差させる(図3)ことができる。半月ギア8は、図1に示す刃4,6の最大開放位置において一端側の歯が駆動ギア5に接し、図3に示す最大交差位置において他端側の歯が駆動ギア5に接するように構成されている。
【0009】
可動刃6の柄部6bとベース2との間には、ばね9が介設されている。ばね9は、図1に示す可動刃6の最大開放位置においては、これを交差方向(図1において反時計方向)へ回転付勢し、可動刃6の回転中間位置(図2に示す中立位置)において死点を通過し、図3に示す最大交差位置においては、これを開放方向(図3において時計方向)へ回転付勢するように配置されている。従って、可動刃6の最大開放位置又は最大交差位置において、駆動ギア5が可動刃6の開放方向又は交差方向へ回転を継続するときに、半月ギア8の端部の歯と駆動ギア5の歯との相互の接触を保ちつつ、相互に滑り回転させて、可動刃6を停止させることができ、また駆動ギア5の逆転時には、その回転を即座に半月ギア8に伝えてこれを反対方向へ回転させることができる。なお、半月ギア8の歯列の両端には、それの歯形とほぼ同型の外形を有する案内ばね10,11が、端部の歯に連続するように配置されており、逆転開始時の駆動ギア5と半月ギア8との噛み合いを円滑にしている。
【0010】
ベース1は、ジョイント部12を介して支持棒13に連結されている。ジョイント部12は、支持棒13に対するベース1の俯仰角を自在に調整できるようになっている。支持棒12の手元には、モータ2の制御スイッチとバッテリが設けられており、操作者が地上で可動刃6の動作を制御できる。
【0011】
このカッタを用いて、例えば、切断対象Aである直立する竹の芯を地上数メートルの高さ位置で切断する場合には、ベース1に支持棒の先端を接続し、これでカッタの本体を捧げ持ち、手元スイッチを操作してモータ2を始動させ、可動刃6を開放位置へ回動させた状態で、竹の幹の所要高さ位置に当てがう。可動刃6が最大開放位置に達した後もモータ2が回転を継続する場合、ばね9が可動刃6を反時計方向へ引き戻すので、半月ギア8が端部の歯(この場合、案内ばね10)を駆動ギア5に接触させたまま空転し、可動刃6の最大開放位置を維持する。可動刃6が最大開放位置に至ったことを確認したら、手元スイッチの操作でモータ2を停止し、竹の幹を刃4,6間に配置する。そして、手元スイッチを操作してモータ2を逆転させ、可動刃6を交差方向へ回動させる。可動刃6が交差位置に至る間に、竹Aは刃部4a,6aによって切断される。可動刃6が最大交差位置に達した後もモータ2が回転を継続する場合、ばね9が可動刃6を時計方向へ引き戻すので、半月ギア8が端部の歯(この場合、案内ばね11)を駆動ギア5に接触させたまま空転し、可動刃6の最大交差位置を維持する。竹Aの切断を確認したら、手元スイッチを操作してモータ2を停止し、次の切断作業に移る。
なお、本発明の電動カッタは、切断対象を竹や木に限定されることがなく、ケーブル、その他のものであってもよい。
【0012】
【発明の効果】
以上のように、本発明においては、可動刃6とベース1との間にばね9を介設し、可動刃6の最大開放位置又は最大交差位置において電動モータ2が回転を継続するときに、半月ギア8の端部の歯と駆動ギア5の歯とを接触を保ちながら滑らせることで、駆動ギア5の逆転時に、半月ギア8をこれに間断なく噛み合させるようにしたため、可動刃6の最大開放位置又は最大交差位置におけるモータ2の停止を制御する複雑な機構を必要とせず、遠隔操作で可動刃6の開放、交差動作を制御することができる。
【図面の簡単な説明】
【図1】カッタの刃を開放した状態の正面図である。
【図2】カッタの刃の中立状態の正面図である。
【図3】カッタの刃を交差した状態の正面図である。
【図4】カッタの使用状態の説明図である。
【符号の説明】
1 ベース
2 モータ
3 減速機
4 固定刃
5 駆動ギア
6 可動刃
7 枢軸
8 半月ギア
9 ばね
10 案内ばね
11 案内ばね
12 ジョイント部
13 支持棒
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric cutter suitable for use in operations such as cutting bamboo and standing trees at a position of 5 to 6 m above the ground to fix the core.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as an electric cable cutter, for example, one described in Japanese Patent Application Laid-Open No. 6-335820 is known. The electric cable cutter includes a reduction mechanism coupled to an electric motor and having a drive gear on an output shaft, a fixed blade fixed to a fixed portion of the reduction mechanism, a pivot blade pivotally attached to the fixed blade, and an outer peripheral edge. A rotary blade having a sector gear, and the sector gear of the rotary blade meshes with the drive gear of the speed reduction mechanism. And a cable is pinched | interposed between a fixed blade and a rotary blade, a rotary blade is rotated so that it may cross | intersect a fixed blade by an electric motor drive, and a cable is cut | disconnected. Since the space between the fixed blade and the rotary blade is opened in a state where the fan-shaped gear of the rotary blade is disengaged from the drive gear beyond the end of the tooth row, a cable can be inserted from the side between the two. And after inserting a cable between a fixed blade and a rotary blade, a rotary blade is set so that the end of a sector gear may mesh with a drive gear, and cutting operation is performed.
[0003]
[Problems to be solved by the invention]
In the above conventional electric cutter, since it is necessary to set the rotary blade at hand in order to mesh the end of the sector gear with the drive gear, the cutting object at a high place away from the hand is cut from the ground. It cannot be used for work, and there is a problem that the setting operation of the rotary blade is troublesome even at the cutting work at hand.
Therefore, according to the present invention, it is not necessary to set the rotary blade by hand before the cutting operation, and even when cutting an object to be cut away from the hand, the cutting operation can be continued without returning to the hand. It is an object to provide an electric cutter that can be used.
[0004]
[Means for Solving the Problems]
In the present invention, in order to solve the above problems, the speed reducer 3 and the fixed blade 4 connected to the electric motor 2 are fixed to the base 1, and the drive gear 5 is fixed to the output shaft of the speed reducer 3. An intermediate portion of the movable blade 6 is pivotally attached to the fixed blade 4, and the half-moon gear 8 on the proximal end side of the movable blade 6 is engaged with the drive gear 5. Then, a spring 9 is interposed between the movable blade 6 and the base 1, and when the electric motor 2 continues to rotate at the maximum open position or the maximum intersection position of the movable blade 6, the tooth at the end of the half-moon gear 8 And the teeth of the drive gear 5 were kept in contact with each other so that the half-moon gear 8 was continuously meshed when the drive gear 5 was reversely rotated.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. 1 is a front view of the cutter blade in an open state, FIG. 2 is a front view of the cutter blade in a neutral state, FIG. 3 is a front view of the cutter blade in an intersecting state, and FIG. It is explanatory drawing.
[0006]
In the figure, reference numeral 1 denotes a machine body base, to which a motor 2, a speed reducer 3, and a fixed blade 4 are fixed. The speed reducer 3 is connected to the motor 2 and a drive gear 5 is fixed to the output shaft.
[0007]
The fixed blade 4 has an arcuate blade portion 4a on the distal end side with an intermediate portion as a boundary, and a handle portion 4b on the proximal end side, and is fixed to the base 1 at the proximal end of the handle portion 4b.
[0008]
An intermediate portion of the movable blade 6 is pivotally attached to the intermediate portion of the fixed blade 4 by a pivot 7. The movable blade 6 has an arcuate blade portion 6a on the distal end side with an intermediate portion as a boundary, and a handle portion 6b on the proximal end side. The blade portion 6a is opposed to the blade portion 4a of the fixed blade 4, and is disposed so as to surround the cutting object A such as bamboo or standing tree therebetween. A half moon gear 8 is fixed to the base end of the handle 6b. The half-moon gear 8 is provided with a tooth row on the arc-shaped peripheral edge, and meshes with the drive gear 5. Accordingly, the movable blade 6 crosses the blade portion 6a with respect to the blade portion 4a of the fixed blade 4 so as to be opened (FIG. 1) or closed (FIG. 3) by forward and reverse rotation of the motor 2. be able to. The half-moon gear 8 has a tooth on one end side in contact with the drive gear 5 at the maximum open position of the blades 4 and 6 shown in FIG. 1 and a tooth on the other end side in contact with the drive gear 5 at the maximum crossing position shown in FIG. It is configured.
[0009]
A spring 9 is interposed between the handle 6 b of the movable blade 6 and the base 2. In the maximum open position of the movable blade 6 shown in FIG. 1, the spring 9 rotates and urges the movable blade 6 in the crossing direction (counterclockwise direction in FIG. 1), and the intermediate position (neutral position shown in FIG. 2) of the movable blade 6. ) At the maximum crossing position shown in FIG. 3 so as to be urged to rotate in the opening direction (clockwise in FIG. 3). Accordingly, when the drive gear 5 continues to rotate in the opening direction or the crossing direction of the movable blade 6 at the maximum open position or the maximum crossing position of the movable blade 6, the teeth of the end of the half-moon gear 8 and the teeth of the drive gear 5 are used. The movable blade 6 can be stopped by sliding and rotating with each other while maintaining mutual contact with each other, and when the drive gear 5 is reversely rotated, the rotation is immediately transmitted to the half-moon gear 8 in the opposite direction. Can be rotated. At both ends of the tooth row of the half-moon gear 8, guide springs 10 and 11 having an outer shape substantially the same as the tooth shape thereof are arranged so as to be continuous with the teeth at the end portion, and the drive gear at the start of reverse rotation. 5 and the half-moon gear 8 are meshed smoothly.
[0010]
The base 1 is connected to a support bar 13 via a joint portion 12. The joint portion 12 can freely adjust the elevation angle of the base 1 with respect to the support rod 13. The support rod 12 is provided with a control switch for the motor 2 and a battery, so that the operator can control the operation of the movable blade 6 on the ground.
[0011]
For example, when cutting an upright bamboo core, which is the cutting object A, at a height of several meters above the ground using this cutter, the tip of the support rod is connected to the base 1, and the main body of the cutter is thereby attached. Dedicated, operate the hand switch to start the motor 2 and rotate the movable blade 6 to the open position, and apply it to the required height position of the bamboo trunk. When the motor 2 continues to rotate even after the movable blade 6 reaches the maximum open position, the spring 9 pulls the movable blade 6 counterclockwise, so that the half-moon gear 8 has end teeth (in this case, the guide spring 10). ) Is kept in contact with the drive gear 5 and the maximum open position of the movable blade 6 is maintained. When it is confirmed that the movable blade 6 has reached the maximum open position, the motor 2 is stopped by operating the hand switch, and the bamboo trunk is disposed between the blades 4 and 6. Then, the hand switch is operated to reverse the motor 2 to rotate the movable blade 6 in the crossing direction. While the movable blade 6 reaches the crossing position, the bamboo A is cut by the blade portions 4a and 6a. When the motor 2 continues to rotate even after the movable blade 6 reaches the maximum crossing position, the spring 9 pulls the movable blade 6 clockwise, so that the half-moon gear 8 has end teeth (in this case, the guide spring 11). Is kept in contact with the drive gear 5 and the maximum crossing position of the movable blade 6 is maintained. After confirming the cutting of the bamboo A, the hand switch is operated to stop the motor 2 and proceed to the next cutting operation.
Note that the electric cutter of the present invention is not limited to bamboo or wood, but may be a cable or the like.
[0012]
【The invention's effect】
As described above, in the present invention, when the spring 9 is interposed between the movable blade 6 and the base 1, and the electric motor 2 continues to rotate at the maximum open position or the maximum intersection position of the movable blade 6, Since the teeth of the end of the half-moon gear 8 and the teeth of the drive gear 5 are slid while keeping contact with each other, the half-moon gear 8 is meshed without interruption when the drive gear 5 is reversed. Therefore, a complicated mechanism for controlling the stop of the motor 2 at the maximum opening position or the maximum crossing position is not required, and the opening and crossing operations of the movable blade 6 can be controlled by remote control.
[Brief description of the drawings]
FIG. 1 is a front view of a state in which a cutter blade is opened.
FIG. 2 is a front view of a cutter blade in a neutral state.
FIG. 3 is a front view of a state in which cutter blades are crossed.
FIG. 4 is an explanatory diagram of a usage state of a cutter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 2 Motor 3 Reduction gear 4 Fixed blade 5 Drive gear 6 Movable blade 7 Axis 8 Half moon gear 9 Spring 10 Guide spring 11 Guide spring 12 Joint part 13 Support rod

Claims (3)

機体ベースと、このベースに支持されたモータ駆動の駆動ギアと、刃部を有し基端側において前記ベースに固定される固定刃と、この固定刃の刃部と対向する刃部を有し中間部において前記固定刃の中間部に相互に交差、開放可能に枢着され基端側に前記駆動ギアに噛み合う半月ギアを有する可動刃と、この可動刃と前記ベースとの間に介設され可動刃の最大開放位置においては交差方向へ、また最大交差位置においては開放方向へ可動刃を回転付勢、前記可動刃の最大開放位置又は最大交差位置において前記駆動ギアが可動刃の開放方向又は交差方向へ回転を継続するときに、前記半月ギアの端部の歯と駆動ギアの歯との接触を保ちながら滑らせて駆動ギアの逆転時に半月ギアを継続噛合させるばねとを具備することを特徴とする電動カッタ。An airframe base, a motor-driven drive gear supported by the base, a fixed blade that has a blade portion and is fixed to the base at the base end side, and a blade portion that faces the blade portion of the fixed blade A movable blade having a half-moon gear which is pivotally attached to the middle portion of the fixed blade and is removably pivoted at the middle portion and meshes with the drive gear on the base end side, and is interposed between the movable blade and the base. , the cross direction is at the maximum open position of the movable blade, also rotates urging the movable blade in the opening direction at the maximum intersection, opening the drive gear of the movable blade in the maximum open position or the maximum intersection of said movable blade And a spring for continuously engaging the half-moon gear when the drive gear is reversed by sliding while maintaining contact between the teeth of the end of the half-moon gear and the teeth of the drive gear when the rotation in the direction or the crossing direction is continued. Electricity characterized by Jitter. 前記ベースに対して着脱自在の支持棒をさらに具備することを特徴とする請求項1に記載の電動カッタ。  The electric cutter according to claim 1, further comprising a support rod detachably attached to the base. 前記固定刃と可動刃の刃部が、相対向する円弧状に形成されていることを特徴とする請求項1に記載の電動カッタ。  2. The electric cutter according to claim 1, wherein blade portions of the fixed blade and the movable blade are formed in arc shapes opposed to each other.
JP2000011497A 2000-01-20 2000-01-20 Electric cutter Expired - Lifetime JP4471437B2 (en)

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JP4471437B2 true JP4471437B2 (en) 2010-06-02

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