JP2009091908A - Portable type engine power working machine - Google Patents

Portable type engine power working machine Download PDF

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Publication number
JP2009091908A
JP2009091908A JP2007260473A JP2007260473A JP2009091908A JP 2009091908 A JP2009091908 A JP 2009091908A JP 2007260473 A JP2007260473 A JP 2007260473A JP 2007260473 A JP2007260473 A JP 2007260473A JP 2009091908 A JP2009091908 A JP 2009091908A
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Japan
Prior art keywords
throttle
trigger
operation lever
lever
engine power
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JP2007260473A
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Japanese (ja)
Inventor
Jinichi Yokoyama
仁一 横山
Takahiro Hirai
貴大 平井
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Koki Holdings Co Ltd
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Hitachi Koki Co Ltd
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Priority to JP2007260473A priority Critical patent/JP2009091908A/en
Priority to PCT/JP2008/068402 priority patent/WO2009044934A1/en
Publication of JP2009091908A publication Critical patent/JP2009091908A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/02—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by hand, foot, or like operator controlled initiation means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • F02B63/044—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators the engine-generator unit being placed on a frame or in an housing
    • F02B2063/046—Handles adapted therefor, e.g. handles or grips for movable units

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable type engine power working machine that enables an operator to operate an operation lever with one hand in the full range of throttle opening degrees. <P>SOLUTION: A portable type engine power working machine includes an engine serving as a drive source, a throttle device for controlling rotational speeds of the engine, a trigger 9 for operating a throttle wire extending from the throttle device, an operation lever 11 provided with an engagement unit for engaging with the trigger 9 and an operation unit to be rotary operated with fingers, and a grip 7 for rotatably holding the operation lever 11 and the trigger 9. On the operation lever 11, there are provided an operation unit 11B to be used when rotating towards a throttle full open and an operation unit 11B to be used when rotating towards a throttle full closed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、エンジンによって駆動されて所要の作業を行うための携帯型エンジン動力作業機に関するものである。   The present invention relates to a portable engine power work machine that is driven by an engine to perform a required work.

エンジンを駆動源として所要の作業を行う携帯型エンジン動力作業機においては、トリガを操作するとスロットルワイヤーを介してスロットル装置のスロットルバルブが開閉されてエンジンの回転速度が制御される。   In a portable engine power working machine that performs a required work using an engine as a drive source, when a trigger is operated, a throttle valve of a throttle device is opened and closed via a throttle wire to control the rotational speed of the engine.

ここで、従来の携帯型エンジン動力作業機のスロットル調整装置の一例を図５〜図７に基づいて説明する。   Here, an example of a conventional throttle adjustment device for a portable engine power working machine will be described with reference to FIGS.

図５は従来のスロットル調整装置を示すグリップ部の側面図、図６は同スロットル調整装置のスロットル全開状態を示す部分側断面図、図７は同スロットル調整装置のスロットル全閉状態を示す部分側断面図である。   5 is a side view of a grip portion showing a conventional throttle adjusting device, FIG. 6 is a partial side sectional view showing a throttle fully opened state of the throttle adjusting device, and FIG. 7 is a partial side view showing a throttle fully closed state of the throttle adjusting device. It is sectional drawing.

図６及び図７に示すように、手で保持可能なグリップ１０７の内部には、軸１０８を中心として回動可能なトリガ１０９が設けられており、該トリガ１０９の操作部１０９ａはスロットル全閉時には図５及び図６に示すようにグリップ１０７から露出している。又、トリガ１０９のグリップ１０７の内部に臨むアーム部１０９ｂの先端部にはスロットルワイヤー１１０の一端が取り付けられており、スロットルワイヤー１１０の他端は不図示のスロットル装置に接続されている。更に、トリガ１０９の軸１０８の近傍には爪１０９ｃが突設されている。   As shown in FIGS. 6 and 7, a trigger 109 that can be rotated around a shaft 108 is provided inside a grip 107 that can be held by hand, and an operation portion 109a of the trigger 109 is fully closed. Sometimes it is exposed from the grip 107 as shown in FIGS. One end of a throttle wire 110 is attached to the tip of the arm portion 109b facing the inside of the grip 107 of the trigger 109, and the other end of the throttle wire 110 is connected to a throttle device (not shown). Further, a claw 109 c is provided in the vicinity of the shaft 108 of the trigger 109.

又、グリップ１０７には操作レバー１１１が軸１１２によって回動可能に支持されており、図５に示すように、操作レバー１１１には径方向外方に延びる操作部１１１ａが一体に形成されている。そして、この操作レバー１１１のグリップ１０７内に臨む部位の外周の一部には、トリガ１０９の前記爪１０９ｃに選択的に係合する係合部１１１ｂが突設されている。   An operation lever 111 is rotatably supported on the grip 107 by a shaft 112. As shown in FIG. 5, the operation lever 111 is integrally formed with an operation portion 111a extending radially outward. . An engaging portion 111 b that selectively engages with the claw 109 c of the trigger 109 protrudes from a part of the outer periphery of the portion of the operation lever 111 that faces the grip 107.

而して、図６に示すようにトリガ１０９を操作していない状態では、スロットル装置のスロットルバルブは全閉状態にあって、エンジンは低速のアイドル回転数で回転しているが、トリガ１０９の操作部１０９ａを引いてトリガ１０９を軸１０８を中心として図７の矢印ａ方向（反時計方向）に回動させると、該トリガ１０９のアーム部１０９ｂに取り付けられたスロットルワイヤー１１０が図７の矢印ｂ方向に引かれてスロットル装置のスロットルバルブが開けられ、エンジンの回転速度が高められる。そして、トリガ１０９が図７に示すように最大限引かれてスロットルワイヤー１１０も矢印ｂ方向に最大限引かれると、スロットル装置のスロットルバルブが全開されてエンジンの回転速度が最高回転速度に達する。尚、スロットルワイヤー１１０は、スロットル全閉方向（図６の矢印ｂ’方向）に付勢されており、従って、図６に示すスロットル全閉状態においては、トリガ１０９の操作部１０９ａはグリップ１０７から最大限突出している。   Thus, as shown in FIG. 6, when the trigger 109 is not operated, the throttle valve of the throttle device is in a fully closed state, and the engine is rotating at a low idle speed. When the operation unit 109a is pulled and the trigger 109 is rotated about the shaft 108 in the direction of arrow a in FIG. 7 (counterclockwise direction), the throttle wire 110 attached to the arm 109b of the trigger 109 is moved to the arrow in FIG. The throttle valve of the throttle device is opened by being pulled in the direction b, and the rotational speed of the engine is increased. When the trigger 109 is pulled to the maximum as shown in FIG. 7 and the throttle wire 110 is also pulled to the maximum in the direction of the arrow b, the throttle valve of the throttle device is fully opened and the engine speed reaches the maximum speed. The throttle wire 110 is urged in the throttle fully closed direction (the direction of the arrow b ′ in FIG. 6). Therefore, in the throttle fully closed state shown in FIG. It protrudes as much as possible.

ところで、前記操作レバー１１１は、回転方向に摩擦力が付与された状態でトリガ１０９の近傍に回動可能に配設されているが、これに付与される摩擦力は、スロットル全閉方向に戻るように付勢されているトリガ１０９から爪１０９ｃ及び操作レバー１１１の係合部１１１ｂを介してスロットル閉方向に付加される力を保持することができる大きさに設定されている。   By the way, the operating lever 111 is rotatably disposed in the vicinity of the trigger 109 in a state in which a frictional force is applied in the rotation direction. The frictional force applied to the operation lever 111 returns to the throttle fully closed direction. The trigger 109 is biased in such a manner that the force applied in the throttle closing direction can be maintained through the claw 109c and the engaging portion 111b of the operation lever 111.

従って、トリガ１０９はスロットルワイヤー１１０によってスロットル全閉方向に戻るように付勢されており、作業者が人差し指によってトリガ１０９の操作部１０９ａを引く力を開放すれば、トリガ１０９が図７の矢印ａ’方向（時計方向）に回動して自動的に図６に示すスロットル全閉位置Ａに戻る。   Therefore, the trigger 109 is biased by the throttle wire 110 so as to return to the fully closed direction of the throttle, and when the operator releases the force to pull the operation portion 109a of the trigger 109 with the index finger, the trigger 109 is moved to the arrow a in FIG. It rotates in the 'direction (clockwise) and automatically returns to the throttle fully closed position A shown in FIG.

又、作業者は操作レバー１１１の操作部１１１ａを親指によって操作して該操作レバー１１１を軸１１２を中心として図５に示すスロットル全閉位置Ａからスロットル全開位置Ｂの角度範囲で回動させることによっても、該操作レバー１１１の係合部１１１ｂをトリガ１０９の爪１０９ｃに係合させてトリガ１０９を軸１０８を中心として従動回転させてスロットル開度を調整してエンジンの回転速度を調整することができる。このとき、前述のように操作レバー１１１に付与されている摩擦力は、スロットル全閉方向に戻るように付勢されているトリガ１０９から爪１０９ｃ及び操作レバー１１１の係合部１１１ｂを介してスロットル閉方向に付加される力を保持することができる大きさに設定されているため、作業者が人差し指によってトリガ１０９を引いていた操作力を開放しても、回転方向の摩擦力によって操作レバー１１１を任意の位置に保持することができ、エンジンの回転速度を所望の値に保持することができる。   Further, the operator operates the operating portion 111a of the operating lever 111 with the thumb to rotate the operating lever 111 around the shaft 112 in the angular range from the throttle fully closed position A to the throttle fully open position B shown in FIG. Also, the engaging portion 111b of the operation lever 111 is engaged with the claw 109c of the trigger 109, the trigger 109 is driven to rotate around the shaft 108, and the throttle opening is adjusted to adjust the engine speed. Can do. At this time, as described above, the frictional force applied to the operation lever 111 is throttled from the trigger 109 urged so as to return to the throttle fully closed direction via the claw 109c and the engaging portion 111b of the operation lever 111. Since the force applied in the closing direction is set to be large enough, even if the operator releases the operation force that was pulling the trigger 109 with the index finger, the operation lever 111 is applied by the frictional force in the rotation direction. Can be held at any position, and the rotational speed of the engine can be held at a desired value.

従って、スロットル開度、即ちエンジン回転数を断続的に変化させるような作業を行う場合には、作業者はトリガ１０９の操作部１０９ａを人差し指で操作することが可能であり、スロットル開度、即ちエンジン回転数を任意の値に固定した状態で作業を行う場合は操作レバー１１１の操作部１１１ａを親指で任意の位置へ操作して固定し、操作部１１１ａから親指を離した状態で楽に作業を行うことができる。   Therefore, when performing an operation of intermittently changing the throttle opening, that is, the engine speed, the operator can operate the operation unit 109a of the trigger 109 with the index finger, When working with the engine speed fixed to an arbitrary value, operate the operating part 111a of the operating lever 111 to an arbitrary position with the thumb and fix it, and work easily with the thumb away from the operating part 111a. It can be carried out.

図５〜図７に示した従来の携帯型エンジン動力作業機のスロットル調整装置においては、前述のようにスロットル開度、即ちエンジン回転数を任意の値に固定して作業を行う場合、操作レバー１１１の操作部１１１ａから親指を離した状態で楽に作業ができる反面、次のような問題があった。   In the conventional portable engine power working machine throttle adjusting device shown in FIGS. 5 to 7, when the operation is performed with the throttle opening, that is, the engine speed fixed to an arbitrary value as described above, the operation lever While it is possible to work easily with the thumb away from the operation unit 111a, there are the following problems.

即ち、操作レバー１１１の操作部１１１ａの位置が図５に示すスロットル全閉位置Ａ及びスロットル全開位置Ｂにおいて大きく変化してしまうため、スロットル全開位置Ｂからスロットル全閉位置Ａ方向へ操作レバー１１１を操作する際に親指の腹部分で操作部１１１ａを操作することが不可能であり、力の入れ難い親指の爪側で操作するか、他方の手で操作する必要があった。このため、スロットル全開位置Ｂ付近においてスロットル開度を微調整する場合や、作業終了後に操作レバー１１１をスロットル全閉位置Ａに戻す場合等に片手で操作レバー１１１を操作することが困難であり、作業効率の悪化を招くという問題があった。
上記問題に対する対策案として、スロットル全開位置Ｂにおいて操作レバー１１１の操作部１１１ａを親指の腹部分で操作できるように該操作部１１１ａを図５の反時計方向へオフセットさせた位置に配置する構成も考えられるが、このように構成するとスロットル全閉位置Ａにおいて親指が操作部１１１ａに届かなくなってしまうという問題が発生する。 That is, since the position of the operation portion 111a of the operation lever 111 greatly changes at the throttle fully closed position A and the throttle fully open position B shown in FIG. 5, the operation lever 111 is moved from the throttle fully open position B toward the throttle fully closed position A. When the operation is performed, it is impossible to operate the operation unit 111a with the abdomen of the thumb, and it is necessary to operate on the nail side of the thumb, which is difficult to apply force, or with the other hand. For this reason, it is difficult to operate the operation lever 111 with one hand when finely adjusting the throttle opening in the vicinity of the throttle fully open position B or when returning the operation lever 111 to the throttle fully closed position A after the completion of the work. There was a problem that the work efficiency was deteriorated.
As a countermeasure against the above-described problem, there is also a configuration in which the operation portion 111a is arranged at a position offset in the counterclockwise direction in FIG. Though conceivable, this configuration causes a problem that the thumb does not reach the operation unit 111a at the throttle fully closed position A.

本発明は上記問題に鑑みてなされたもので、その目的とする処は、スロットル開度全域において操作レバーを片手で容易に操作することができる携帯型エンジン動力作業機を提供することにある。   The present invention has been made in view of the above problems, and an object thereof is to provide a portable engine power working machine capable of easily operating an operation lever with one hand over the entire throttle opening.

上記目的を達成するため、請求項１記載の発明は、駆動源であるエンジンと、該エンジンの回転速度を制御するスロットル装置と、該スロットル装置から延びるスロットルワイヤーを操作するトリガと、該トリガに係合する係合部と指で回動操作するための操作部とを備えた操作レバーと、該操作レバーと前記トリガを回動可能に保持するグリップを備えた携帯型エンジン動力作業機において、前記操作レバーがスロットル全開位置及びスロットル全閉位置の何れにあっても前記操作部の少なくとも一部が前記グリップの中心軸よりも上方に位置するよう構成したことを特徴とする。   In order to achieve the above object, an invention according to claim 1 is directed to an engine as a drive source, a throttle device for controlling the rotational speed of the engine, a trigger for operating a throttle wire extending from the throttle device, In a portable engine power working machine including an operating lever having an engaging portion to be engaged and an operating portion for rotating with a finger, and a grip for rotatably holding the operating lever and the trigger, It is characterized in that at least a part of the operation portion is positioned above the center axis of the grip regardless of whether the operation lever is in the throttle fully open position or the throttle fully closed position.

請求項２記載の発明は、請求項１記載の発明において、前記操作レバーの操作部に窪み部を形成したことを特徴とする。   According to a second aspect of the present invention, in the first aspect of the present invention, a depression is formed in the operation portion of the operation lever.

請求項３記載の発明は、駆動源であるエンジンと、該エンジンの回転速度を制御するスロットル装置と、該スロットル装置から延びるスロットルワイヤーを操作するトリガと、該トリガに係合する係合部と指で回動操作するための操作部とを備えた操作レバーと、該操作レバーと前記トリガを回動可能に保持するグリップを備えた携帯型エンジン動力作業機において、前記操作レバーに、これをスロットル全開方向に回動させる際に使用する操作部とスロットル全閉方向に回動させる際に使用する操作部を設けたことを特徴とする。   According to a third aspect of the present invention, there is provided an engine that is a drive source, a throttle device that controls the rotational speed of the engine, a trigger that operates a throttle wire extending from the throttle device, and an engaging portion that engages with the trigger. In a portable engine power working machine having an operation lever having an operation part for rotating with a finger, and a grip for rotatably holding the operation lever and the trigger, the operation lever An operation unit used when rotating in the throttle fully open direction and an operation unit used when rotating in the throttle fully closed direction are provided.

請求項１記載の発明によれば、操作レバーがスロットル全開位置及びスロットル全閉位置の何れにあっても該操作レバーの操作部の少なくとも一部がグリップの中心軸よりも上方に位置するよう構成したため、操作レバーがスロットル全開位置及びスロットル全閉位置の何れにあっても、該操作レバーの操作部のグリップの中心軸よりも上方に位置する部分を片手で容易に操作することができ、スロットル開度全域においてエンジンの回転速度を微調整を含めて操作性良く調整することができる。   According to the first aspect of the present invention, at least a part of the operation portion of the operation lever is positioned above the center axis of the grip regardless of whether the operation lever is in the throttle fully open position or the throttle fully closed position. Therefore, regardless of whether the operating lever is in the throttle fully open position or the throttle fully closed position, the portion located above the center axis of the grip of the operating portion of the operating lever can be easily operated with one hand. The engine speed can be adjusted with good operability including fine adjustment over the entire opening.

請求項２記載の発明によれば、操作レバーの操作部に窪み部を形成したため、作業者は窪み部に指を入れて操作レバーを容易に回動操作することができる。   According to the second aspect of the present invention, since the depression is formed in the operation portion of the operation lever, the operator can easily rotate the operation lever by putting a finger in the depression.

請求項３記載の発明によれば、操作レバーに、これをスロットル全開方向に回動させる際に使用する操作部とスロットル全閉方向に回動させる際に使用する操作部を設けたため、操作レバーのスロットル全閉方向に回動させる際に使用する操作部を操作して操作レバーをスロットル全開位置に移動させても、操作レバーのスロットル全開方向に回動させる際に使用する操作部は依然として操作レバーをスロットル全開方向に操作することが容易な位置にあるため、該操作部を操作して操作レバーを容易にスロットル全開位置からスロットル閉方向へ回動させることができ、スロットル開度全域においてエンジンの回転速度を微調整を含めて操作性良く調整することができる。   According to the third aspect of the present invention, the operation lever is provided with the operation portion used when rotating the lever in the throttle fully open direction and the operation portion used when rotating the throttle in the throttle fully closed direction. Even if the operating lever used to rotate the throttle in the fully closed direction is moved to move the throttle to the fully open position, the operating portion used to rotate the operating lever in the fully throttled direction will still operate. Since the lever is in a position where it can be easily operated in the throttle full open direction, the operation lever can be easily rotated from the throttle full open position to the throttle close direction by operating the operating portion. Can be adjusted with good operability including fine adjustment.

以下に本発明の実施の形態を添付図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は本発明に係る携帯型エンジン動力作業機の側面図、図２は同携帯型エンジン動力作業機のスロットル調整装置を示すグリップ部の側面図である。   FIG. 1 is a side view of a portable engine power working machine according to the present invention, and FIG. 2 is a side view of a grip portion showing a throttle adjusting device of the portable engine power working machine.

図１に示す携帯型エンジン動力作業機１は、エンジン２によって不図示のファンを回転駆動することによって吸込又は送風作業を行うブロワであって、吸込口３ｂからエアを吸い込み、吹出口からエアを排出する機能を有している。   A portable engine power working machine 1 shown in FIG. 1 is a blower that performs suction or blowing work by rotationally driving a fan (not shown) by an engine 2, and sucks air from a suction port 3b and blows air from a blower outlet. Has the function of discharging.

又、前記エンジン２の吸気系にはスロットル装置４とエアクリーナ５が接続されており、エンジン２の排気系にはサイレンサ６が接続されている。   A throttle device 4 and an air cleaner 5 are connected to the intake system of the engine 2, and a silencer 6 is connected to the exhaust system of the engine 2.

更に、携帯型エンジン動力作業機１の上部には、作業者が片手で当該携帯型エンジン動力作業機１を把持するためのグリップ７が水平に形成されており、このグリップ７の一端の内部には、軸８を中心として回動可能なトリガ９が設けられており、該トリガ９の操作部９ａはスロットル全閉時には図１及び図２に示すようにグリップ７から下方に露出している。又、トリガ９のグリップ７の内部に臨むアーム部９ｂの先端部にはスロットルワイヤー１０の一端が取り付けられており、スロットルワイヤー１０の他端は前記スロットル装置４に接続されている。更に、トリガ９の軸８の近傍には爪９ｃが突設されている。   Further, a grip 7 for an operator to hold the portable engine powered work machine 1 with one hand is formed horizontally on the upper part of the portable engine powered work machine 1. Is provided with a trigger 9 that can rotate about a shaft 8, and the operation portion 9 a of the trigger 9 is exposed downward from the grip 7 as shown in FIGS. 1 and 2 when the throttle is fully closed. One end of a throttle wire 10 is attached to the tip of the arm portion 9 b facing the inside of the grip 7 of the trigger 9, and the other end of the throttle wire 10 is connected to the throttle device 4. Further, a claw 9 c is projected in the vicinity of the shaft 8 of the trigger 9.

又、グリップ７のトリガ９の近傍（グリップ７を把持した作業者の手の親指が届く位置）には操作レバー１１が軸１２によって回動可能に支持されており、図２に詳細に示すように、操作レバー１１には径方向外方に延びる２本の操作部１１Ａ，１１Ｂが一体に形成されている。ここで、操作レバー１１の操作部１１Ａ，１１Ｂは軸１２の中心よりも上方に位置しており、一方の操作部１１Ａは操作レバー１１をスロットル全閉方向に回動させる際に使用され、他方の操作部１１Ｂは操作レバー１１をスロットル全開方向に回動させる際に使用されるものである。尚、スロットル調整装置の操作レバー１１を除く構成は図５〜図７に示したものと同じであるため、これについての再度の説明は省略する。   An operation lever 11 is rotatably supported by a shaft 12 in the vicinity of the trigger 9 of the grip 7 (a position where the thumb of the operator's hand holding the grip 7 can reach), as shown in detail in FIG. In addition, the operation lever 11 is integrally formed with two operation portions 11A and 11B extending radially outward. Here, the operation portions 11A and 11B of the operation lever 11 are located above the center of the shaft 12, and one operation portion 11A is used when the operation lever 11 is rotated in the fully closed direction of the throttle, The operation portion 11B is used when the operation lever 11 is rotated in the throttle fully open direction. In addition, since the structure except the operation lever 11 of a throttle adjustment apparatus is the same as what was shown in FIGS. 5-7, description about this again is abbreviate | omitted.

而して、本実施の形態によれば、作業者がグリップ７を把持し、操作レバー１１の操作部１１Ｂを親指で操作して該操作レバー１１を図２に鎖線にて示すスロットル全開位置Ｂへと回動させても、他方の操作部１１Ａが依然として親指の腹部分で操作レバー１１を回動操作することが容易な位置に配置されているため、該操作部１１Ａを親指の腹部分で操作することによって操作レバー１１をスロットル全開位置Ｂ付近からスロットル閉方向（図２の反時計方向）へ容易に回動操作することが可能である。又、このとき、操作レバー１１の操作部１１Ａがスロットル全閉位置Ａに近づき、該操作部１１Ａに親指が届かなくなった場合は、他方の操作部１１Ｂを親指で操作することによって操作レバー１１をスロットル全閉位置Ａまで回動させることができる。そして、スロットル全開位置Ｂ付近においてスロットル開度の微調整を行う場合は、操作レバー１１の操作部１１Ａを親指の腹部分で操作すれば良い。   Thus, according to the present embodiment, the operator grasps the grip 7 and operates the operating portion 11B of the operating lever 11 with the thumb, and the throttle lever fully opened position B indicated by the chain line in FIG. Since the other operation portion 11A is still located at a position where it is easy to rotate the operation lever 11 at the belly portion of the thumb even if the operation portion 11A is rotated to the left, the operation portion 11A is placed at the belly portion of the thumb. By operating, it is possible to easily rotate the operation lever 11 from the vicinity of the throttle fully open position B in the throttle closing direction (counterclockwise in FIG. 2). At this time, when the operating portion 11A of the operating lever 11 approaches the throttle fully closed position A and the thumb does not reach the operating portion 11A, the operating lever 11 is operated by operating the other operating portion 11B with the thumb. It can be rotated to the throttle fully closed position A. When the throttle opening is finely adjusted in the vicinity of the throttle fully open position B, the operation portion 11A of the operation lever 11 may be operated with the belly portion of the thumb.

従って、本実施の形態によれば、スロットル開度によって操作レバー１１の操作部１１Ａと操作部１１Ｂとを使い分けることによって、スロットル全開位置Ｂ付近におけるスロットル開度の微調整、作業終了後に操作レバー１１をスロットル全閉位置Ａに戻す場合等には、片手での操作レバー１１を容易に操作してエンジン２の回転速度を調整することができる。   Therefore, according to the present embodiment, the operation portion 11A of the operation lever 11 and the operation portion 11B of the operation lever 11 are selectively used according to the throttle opening, thereby finely adjusting the throttle opening in the vicinity of the throttle fully opened position B, and after the operation is finished, the operation lever 11 Is returned to the throttle fully closed position A, the operating lever 11 can be easily operated with one hand to adjust the rotational speed of the engine 2.

尚、操作レバーとしては、前記操作レバー１１の操作部１１Ａと操作部１１Ｂを繋げて構成される図３に示すような操作レバー１１’を用いても良く、更に図３に示す操作レバー１１’の外周部に窪み部１１ａ”を形成して成る図４に示すような操作レバー１１”を用いても良い。図４に示す操作レバー１１”を用いる場合、作業者は窪み部１１ａ”に親指を入れて操作レバー１１”を容易に回動操作することができるという利点が得られる。   As the operation lever, an operation lever 11 ′ shown in FIG. 3 configured by connecting the operation unit 11A and the operation unit 11B of the operation lever 11 may be used, and the operation lever 11 ′ shown in FIG. Alternatively, an operation lever 11 ″ as shown in FIG. When the operation lever 11 ″ shown in FIG. 4 is used, there is an advantage that the operator can easily turn the operation lever 11 ″ by putting his / her thumb in the recess 11a ″.

本発明に係る携帯型エンジン動力作業機の側面図である。1 is a side view of a portable engine power working machine according to the present invention. 本発明に係る携帯型エンジン動力作業機のスロットル調整装置を示すグリップ部の側面図である。It is a side view of a grip part showing a throttle adjustment device of a portable engine power working machine according to the present invention. 本発明に係る携帯型エンジン動力作業機に用いられる操作レバーの変形例を示す図である。It is a figure which shows the modification of the operation lever used for the portable engine power working machine which concerns on this invention. 本発明に係る携帯型エンジン動力作業機に用いられる操作レバーの変形例を示す図である。It is a figure which shows the modification of the operation lever used for the portable engine power working machine which concerns on this invention. 従来のスロットル調整装置を示すグリップ部の側面図である。It is a side view of the grip part which shows the conventional throttle adjustment apparatus. 従来のスロットル調整装置のスロットル全開状態を示す部分側断面図である。It is a fragmentary sectional side view which shows the throttle full open state of the conventional throttle adjustment apparatus. 従来のスロットル調整装置のスロットル全閉状態を示す部分側断面図である。It is a fragmentary sectional side view which shows the throttle fully closed state of the conventional throttle adjusting device.

符号の説明Explanation of symbols

１ 携帯型エンジン動力作業機
２ エンジン
３ａ 吹出口
３ｂ 吸込口
４ スロットル装置
５ エアクリーナ
６ サイレンサ
７ グリップ
８ 軸
９ トリガ
９ａ トリガの操作部
９ｂ トリガのアーム部
１０ スロットルワイヤー
１１ 操作レバー
１１’ 操作レバー
１１” 操作レバー
１１Ａ 操作レバーのスロットル全閉方向に回動させる際に使用する操作部
１１Ｂ 操作レバーのスロットル全開方向に回動させる際に使用する操作部
１１ａ” 操作レバーの窪み部
１２ 軸
Ａ スロットル全閉位置
Ｂ スロットル全開位置 DESCRIPTION OF SYMBOLS 1 Portable engine power working machine 2 Engine 3a Air outlet 3b Suction port 4 Throttle device 5 Air cleaner 6 Silencer 7 Grip 8 Shaft 9 Trigger 9a Trigger operation part 9b Trigger arm part 10 Throttle wire 11 Operation lever 11 'Operation lever 11 " Operation lever 11A Operation portion 11B used for turning the operation lever in the fully closed direction of the operation lever 11B Operation portion 11B used for turning the operation lever in the fully open direction of the throttle 12A A Throttle fully closed Position B Full throttle position

Claims (3)

駆動源であるエンジンと、該エンジンの回転速度を制御するスロットル装置と、該スロットル装置から延びるスロットルワイヤーを操作するトリガと、該トリガに係合する係合部と指で回動操作するための操作部とを備えた操作レバーと、該操作レバーと前記トリガを回動可能に保持するグリップを備えた携帯型エンジン動力作業機において、
前記操作レバーがスロットル全開位置及びスロットル全閉位置の何れにあっても前記操作部の少なくとも一部が前記グリップの中心軸よりも上方に位置するよう構成したことを特徴とする携帯型エンジン動力作業機。 An engine that is a drive source, a throttle device that controls the rotational speed of the engine, a trigger that operates a throttle wire extending from the throttle device, an engaging portion that engages with the trigger, and a finger for rotating the finger In a portable engine power working machine having an operation lever provided with an operation unit, and a grip that rotatably holds the operation lever and the trigger,
A portable engine power operation characterized in that at least a part of the operation portion is positioned above the center axis of the grip regardless of whether the operation lever is in a throttle fully open position or a throttle fully closed position. Machine. 前記操作レバーの操作部に窪み部を形成したことを特徴とする請求項１記載の携帯型エンジン動力作業機。   2. The portable engine power work machine according to claim 1, wherein a recess is formed in the operation portion of the operation lever. 駆動源であるエンジンと、該エンジンの回転速度を制御するスロットル装置と、該スロットル装置から延びるスロットルワイヤーを操作するトリガと、該トリガに係合する係合部と指で回動操作するための操作部とを備えた操作レバーと、該操作レバーと前記トリガを回動可能に保持するグリップを備えた携帯型エンジン動力作業機において、
前記操作レバーに、これをスロットル全開方向に回動させる際に使用する操作部とスロットル全閉方向に回動させる際に使用する操作部を設けたことを特徴とする携帯型エンジン動力作業機。
An engine that is a drive source, a throttle device that controls the rotational speed of the engine, a trigger that operates a throttle wire extending from the throttle device, an engaging portion that engages with the trigger, and a finger for rotating the finger In a portable engine power working machine having an operation lever provided with an operation unit, and a grip that rotatably holds the operation lever and the trigger,
A portable engine power working machine, wherein the operating lever is provided with an operating portion used for rotating the operating lever in a throttle fully opening direction and an operating portion used for rotating the operating lever in a throttle fully closing direction.
JP2007260473A 2007-10-04 2007-10-04 Portable type engine power working machine Pending JP2009091908A (en)

Priority Applications (2)

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JP2007260473A JP2009091908A (en) 2007-10-04 2007-10-04 Portable type engine power working machine
PCT/JP2008/068402 WO2009044934A1 (en) 2007-10-04 2008-10-03 Portable engine unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007260473A JP2009091908A (en) 2007-10-04 2007-10-04 Portable type engine power working machine

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DE102013108938A1 (en) 2012-08-20 2014-02-20 Hitachi Koki Co., Ltd. Electric working machine
US9473055B2 (en) 2012-08-20 2016-10-18 Hitachi Koki Co., Ltd. Electric working machine

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