JP3489808B2 - Operation lever device for work equipment - Google Patents
Operation lever device for work equipmentInfo
- Publication number
- JP3489808B2 JP3489808B2 JP18123398A JP18123398A JP3489808B2 JP 3489808 B2 JP3489808 B2 JP 3489808B2 JP 18123398 A JP18123398 A JP 18123398A JP 18123398 A JP18123398 A JP 18123398A JP 3489808 B2 JP3489808 B2 JP 3489808B2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- cam
- throttle lever
- throttle
- lock
- 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 - Fee Related
Links
Landscapes
- Harvester Elements (AREA)
- Catching Or Destruction (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、例えば、刈り払い
機や薬液散布機、集塵機等のように、作業器具を原動機
で駆動する形式の作業機において、原動機の制御操作を
行う操作レバー装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating lever device for controlling a prime mover in a working machine of a type in which a working implement is driven by a prime mover such as a brush cutter, a chemical sprayer, and a dust collector. .
【0002】[0002]
【従来の技術】原動機を背負ったりして携行し、作業器
具を原動機で駆動する形式の作業機、例えば、刈り払い
機は、従来実公昭63−14035号公報他で知られて
いる。この種の刈り払い機は、原動機で回転、駆動され
る刈り刃を先端部に備える操作杆に設けたハンドルを手
で把持し、操作杆を左右、上下に移動させて刈り払い作
業を行うものである。操作ハンドルには原動機の制御を
行う操作部を備え、操作部に設けたスロットルレバーの
操作で、原動機の出力を制御し、刈り刃の回転数を制御
する。ところで、操作ハンドルを手で把持しながらスロ
ットルレバーを併せて操作し、スロットルレバーを手で
握った状態で、作業、刈り払い機では雑草等の刈り払い
作業を行うように構成されるのが一般的であり、作業
中、作業者は指でスロットルレバーを握り続ける必要が
あり、作業者の負担が大きい。2. Description of the Related Art A working machine of a type in which a driving machine is carried on a back and a work implement is driven by the driving machine, for example, a brush cutter, is conventionally known from Japanese Utility Model Publication No. 63-14035. This type of mowing machine is one in which a handle provided on an operating rod equipped with a cutting blade that is rotated and driven by a prime mover is gripped by hand, and the operating rod is moved left and right and up and down to perform mowing work. Is. The operating handle is provided with an operating section for controlling the prime mover, and the output of the prime mover is controlled by controlling a throttle lever provided on the operating section, thereby controlling the rotation speed of the cutting blade. By the way, it is generally configured to operate the throttle lever together while holding the operation handle with the hand, and work with the throttle lever held by the hand, and the weeding machine is used for cutting off the weeds. Since the worker needs to continue to hold the throttle lever with his finger during the work, the burden on the worker is large.
【0003】このため、作業中におけるスロットルレバ
ーを握り続ける負担を軽減するため、スロットルレバー
を所定位置にセットした状態でロックし、この状態を継
続するようにしたロック機構、及びこれの開放機構をハ
ンドル、或いは操作部に付設することが試みられる。ス
ロットルレバーとロックレバーを並設した操作レバー装
置としては、実公昭55−21536号公報、実開
昭60−41539号公報、実公昭53−42661
号公報、特開平8−303263号公報の技術が開示
されている。For this reason, in order to reduce the burden of continuing to grip the throttle lever during work, a locking mechanism that locks the throttle lever in a predetermined position and keeps this state, and a releasing mechanism thereof are provided. An attempt is made to attach it to the handle or the operation part. As an operation lever device in which a throttle lever and a lock lever are arranged in parallel, Japanese Utility Model Publication No. 55-21536, Japanese Utility Model Publication No. 60-41539, and Japanese Utility Model Publication No. 53-42661 are available.
The techniques of Japanese Patent Laid-Open No. 8-303263 are disclosed.
【0004】[0004]
【発明が解決しようとする課題】以上の従来技術は、何
れもスロットルレバーを所定位置にセットし、この状態
でロック機構を介してスロットルレバーを当該位置に保
持すべくロックし、必要に応じてロックを解除するよう
に構成されている。上記したの技術は、スロットルレ
バーと解除レバーとをハンドルグリップ部分に別々に設
けているので、各レバーは近接する配置されてはいる
が、操作性に劣り、又構造が複雑化し、部品点数も多く
なる。の技術は、スロットルレバー、ロックレバーが
同軸に配置されてはいるが、各レバーの軸支部に強いバ
ネの弾性力が直接作用し、各レバーの回動操作に際し、
大きな力を必要とし、操作性に劣ること、バネを弱くす
れば、ロックレバーのスロットルレバー規制力が低下す
る。の技術は、スロットルレバー、ロックレバーが別
々に配置され、且つこの間に各レバーを繋ぐ転動爪子を
備えるので、構造が複雑であり、又部品点数も多い。
の技術は、スロットルレバー、ロックレバーを同軸的に
設けてはいるが、ロックレバーの回動をバネのみに依存
して規制しているので、上記の技術と同様の課題があ
る。In any of the above-mentioned prior arts, the throttle lever is set at a predetermined position, and in this state, the throttle lever is locked to hold it at that position via a lock mechanism. It is configured to unlock. In the above technique, the throttle lever and the release lever are separately provided in the handle grip portion, so that the levers are arranged close to each other, but the operability is poor, the structure is complicated, and the number of parts is also large. Will increase. Although the throttle lever and the lock lever are coaxially arranged, the strong elastic force of the spring directly acts on the pivotal support of each lever to rotate each lever.
A large force is required, the operability is poor, and if the spring is weakened, the throttle lever regulation force of the lock lever is reduced. Since the throttle lever and the lock lever are separately arranged and the rolling pawl which connects each lever between them is provided, the technology of (3) has a complicated structure and a large number of parts.
In the technology of (1), the throttle lever and the lock lever are coaxially provided, but since the rotation of the lock lever is restricted only by the spring, there is a problem similar to the above technology.
【0005】本発明は、以上の従来技術の上記した課題
を解決するためになされたものである。本発明の目的と
する処は、スロットルレバーとロックレバーとを備え、
スロットルレバーのロック機構の構造の簡素化、部品点
数の減少を図ることができる作業機の操作レバー装置を
提供することにある。又本発明の他の目的とする処は、
スロットルレバーの原動機制御操作における当該操作位
置でのロック作動が確実であり、ロックレバーのロック
操作がし易く、スロットルレバー、ロックレバーを近接
配置することが可能で、スロットルレバー、ロックレバ
ーの操作系の外形のコンパクト化、及び操作性の向上を
図ることができる作業機の操作レバー装置を提供するこ
とにある。The present invention has been made to solve the above-mentioned problems of the prior art. The object of the present invention comprises a throttle lever and a lock lever,
It is an object of the present invention to provide an operating lever device for a working machine that can simplify the structure of the lock mechanism of the throttle lever and reduce the number of parts. Another object of the present invention is to
The locking operation of the throttle lever at the operation position in the motor control operation is reliable, the lock lever can be easily locked, and the throttle lever and the lock lever can be arranged close to each other. It is an object of the present invention to provide an operating lever device for a working machine, which is capable of achieving a more compact outer shape and improved operability.
【0006】[0006]
【課題を解決するための手段】上記課題を解決するため
に請求項1は、原動機で駆動される作業器具と、原動機
を制御する操作部を有する操作ハンドルを備えた作業機
において、操作ハンドルに設けた操作部は、スロットル
レバーと、該スロットルレバーの操作位置を押圧機構を
介して規制するロックレバーとを備え、押圧機構は、ロ
ックレバーの支軸と同軸上で前記操作ハンドルの本体に
一体に形成された第1のカムと、該第1のカムと係合す
るロックレバーに設けられた第2のカムと、第2のカム
の反対側の面の側に配置された押圧付勢手段とで構成
し、前記第2のカムが、前記押圧付勢手段を介して前記
スロットルレバーを押圧するようにしたことを特徴とす
る。 In order to solve the above-mentioned problems, the first aspect of the present invention is to provide a working machine equipped with a working tool driven by a prime mover and an operating handle having an operating portion for controlling the prime mover. The operation unit provided includes a throttle lever and a lock lever that regulates the operation position of the throttle lever via a pressing mechanism, and the pressing mechanism is integrated with the main body of the operation handle coaxially with the support shaft of the lock lever. A first cam formed on the first cam, a second cam provided on a lock lever engaged with the first cam, and a pressure urging means arranged on the opposite side of the second cam. And the second cam is configured so that the second cam is
Characterized by pressing the throttle lever
It
【0007】請求項1では、ロックレバーによるスロッ
トルレバーの当該操作位置におけるロックを、押圧機構
で確実に行うことが可能であり、押圧機構を構成する2
個のカムの一方を操作ハンドル本体に一体に形成したの
で、押圧機構の構造の簡素化、部品点数の減少を図るこ
とができる。According to the first aspect of the present invention, it is possible to reliably lock the throttle lever at the operation position with the lock lever by the pressing mechanism, which constitutes the pressing mechanism.
Since one of the individual cams is formed integrally with the operation handle body, the structure of the pressing mechanism can be simplified and the number of parts can be reduced.
【0008】請求項2は、請求項1において、操作部の
本体に一体に設けた第1のカム外周、又は前記ロックレ
バーに設けた第2のカム外周の一方に筒状部を設け、他
方のカムを該筒状部内に嵌合した。請求項2では、第1
のカム、第2のカムとは、内外の嵌合関係にあるので、
双方のカム間に塵埃等が侵入するのを防止することがで
きて防塵性に優れ、カム作動の確実、円滑な作動を保障
することができる。特に、塵埃が多い屋外で作業する刈
り払い機、薬液散布機、集塵機等では、操作部に塵埃が
侵入する虞が多く、防塵性を高度に確保し、スロットル
レバーのロック機構の作動の確実、円滑を図る上で、好
ましい。According to a second aspect of the present invention, in the first aspect, the tubular portion is provided on one of the outer periphery of the first cam integrally provided on the main body of the operating portion or the outer periphery of the second cam provided on the lock lever, and the other is provided. The cam was fitted in the tubular portion. In claim 2, the first
Since the cam and the second cam have an internal and external fitting relationship,
It is possible to prevent dust and the like from entering between both cams, which is excellent in dustproofness, and it is possible to ensure a reliable and smooth operation of the cams. In particular, with a brush cutter, chemical sprayer, dust collector, etc. that work outdoors with a large amount of dust, there is a risk that dust will enter the operating section, ensuring a high degree of dust resistance and ensuring the operation of the throttle lever lock mechanism. It is preferable for smoothness.
【0009】請求項3は、請求項1において、押圧付勢
手段を、第1、第2のカム相互を係合し、スロットルレ
バーの一部を押圧するように構成した。請求項3では、
スロットルレバーの操作に際し、スロットルレバーのコ
ントロールケーブルの引張力の他に、押圧機構の押圧付
勢手段により適度の摩擦力が得られる。According to a third aspect of the present invention, in the first aspect, the pressing biasing means is configured to engage the first and second cams with each other and press a part of the throttle lever. In claim 3,
When the throttle lever is operated, in addition to the pulling force of the throttle lever control cable, an appropriate frictional force is obtained by the pressing biasing means of the pressing mechanism.
【0010】[0010]
【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。図1は作業機1による作業の一例を示す説
明図で、実施例では背負い式の刈り払い機による雑草の
刈り払い作業を示す。作業機1は、フレーム2に搭載さ
れたガソリンエンジンの如き原動機3、原動機3の出力
部に連結されたフレキシブルチューブ4、該フレキシブ
ルチューブ4を通る図示しないフレキシブル伝動シャフ
ト、剛体で構成された長尺の操作杆5、操作杆5の先端
部に設けられた刈り刃6を備え、原動機3の出力で操作
杆5内を通した伝動シャフトを介して刈り刃6を回転、
駆動する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of the reference numerals. FIG. 1 is an explanatory view showing an example of work by the working machine 1, and in the embodiment, weeding work of weeds by a backpack-type mower is shown. The working machine 1 includes a prime mover 3 such as a gasoline engine mounted on a frame 2, a flexible tube 4 connected to an output portion of the prime mover 3, a flexible transmission shaft (not shown) passing through the flexible tube 4, and a long body composed of a rigid body. Of the operating rod 5, a cutting blade 6 provided at the tip of the operating rod 5, and the cutting blade 6 is rotated by the output of the prime mover 3 via a transmission shaft passing through the operating rod 5.
To drive.
【0011】操作杆5の後半部には、前後に把持ハンド
ル7、及び操作ハンドル10を設け、各ハンドル7,1
0は、操作杆5の上方に起立するように設ける。作業者
Mは、背負い式ベルト8で背当てパッド9を介して原動
機3を搭載したフレーム2を背負い、操作杆5を身体の
右側に臨ませ、左右の手、例えば左手LHで把持ハンド
ル握り、右手RHで操作ハンドル10をガングリップの
ように握り、操作杆5を上下、左右に振り、雑草の刈り
払い作業を行う。左手LHは把持ハンドル7の把持が主
であり、操作杆5の上下、左右の操作機能を負担し、一
方、操作ハンドル10を右手RHで把持し、右手RHで
は、操作ハンドル10の把持と、原動機3の出力を制御
するスロットル調整を行う。A grip handle 7 and an operation handle 10 are provided on the rear half of the operation rod 5, and the respective handles 7, 1 are provided.
0 is provided so as to stand above the operating rod 5. The worker M carries the frame 2 carrying the prime mover 3 via the backrest pad 9 via the backrest belt 8, exposes the operating rod 5 to the right side of the body, and holds the grip handle with the left and right hands, for example, the left hand LH. The operation handle 10 is gripped like a gun grip with the right hand RH, and the operation rod 5 is swung up and down, left and right, and the weeding work is performed. The left hand LH mainly grips the grip handle 7, and bears the up / down and left / right operation functions of the operating rod 5. On the other hand, the right handle RH grips the manipulation handle 10, and the right hand RH grips the manipulation handle 10. The throttle is adjusted to control the output of the prime mover 3.
【0012】図2は操作ハンドル10の外観を示す斜視
図である。図の矢印Fが前方で、RRが後方である。操
作ハンドル10は、ガングリップ状の外形で、手で握る
グリップ状の把持部11と、この上に操作部を構成する
操作ハンドルの本体12を設ける。本体12は左右の部
材13,14の接合体からなる二つ割の最中構造であ
る。本体12の前面には、スロットルレバー30を前方
に、前下傾して突出するように配置し、又後面には、ロ
ックレバー40が後方に後下傾して突出するように配置
されている。又本体12の後部上半部の後下傾した部分
には、原動機3の始動スイッチ80を配置し、更に本体
12の左側面には、スロットルレバーをロックした状態
で調節操作を行い2次調節レバー60を配置した。FIG. 2 is a perspective view showing the appearance of the operation handle 10. Arrow F in the figure is the front and RR is the rear. The operation handle 10 has a gun-grip-shaped outer shape, and is provided with a grip-shaped grip portion 11 to be gripped by a hand, and a main body 12 of the operation handle constituting the operation portion. The main body 12 has a split middle structure including a joined body of left and right members 13 and 14. A throttle lever 30 is arranged on the front surface of the main body 12 so as to project forward and tilt downward, and a lock lever 40 is arranged on the rear surface so as to project backward and tilt downward. . Further, the start switch 80 of the prime mover 3 is arranged on the rear upper half of the main body 12 in a rearwardly inclined portion. Further, on the left side surface of the main body 12, the throttle lever is locked and the adjustment operation is performed to perform the secondary adjustment. The lever 60 was placed.
【0013】図3は、操作ハンドル10の操作部本体1
2を分解して示した斜視図で、個々の構成部品を分解し
て示す。本体12を構成する左右の部材13,14は、
基板部13a,14aの各周縁部に、対称的に内側に突
出する周片部13b,14bを一体に備え、各周片部1
3b,14bの前部の下半部、上部後半部、後部の下半
部には、欠部13c,13d,14d,13e,14e
を対称的に備える(部材14の部材13の欠部13bに
対応する欠部は、図2では隠れて表されていない)。こ
れらの欠部は、部材13,14を組付、一体化した状態
で、スロットルレバー30、ロックレバー40、始動ス
イッチ80が本体12の外に導出する開口部を構成す
る。FIG. 3 shows the operation section body 1 of the operation handle 10.
FIG. 2 is an exploded perspective view of the component 2, showing the individual components in an exploded manner. The left and right members 13, 14 that form the main body 12 are
Peripheral piece portions 13b and 14b symmetrically projecting inward are integrally provided at respective peripheral edge portions of the base plate portions 13a and 14a.
Notches 13c, 13d, 14d, 13e, and 14e are provided in the lower half portion, the upper half portion, and the rear lower portion of the front portions 3b and 14b.
Symmetrically (the cutout corresponding to the cutout 13b of the member 13 of the member 14 is not shown hidden in FIG. 2). These cutouts form an opening through which the throttle lever 30, the lock lever 40, and the starting switch 80 are led out of the main body 12 in a state where the members 13 and 14 are assembled and integrated.
【0014】左右の部材13,14の各内側面で、前部
には、同軸的に筒軸部15,16を対称的に対向するよ
うに突設し、一方、15は筒孔状で、他方16は端部を
部材14の基板部で閉塞し、内周部をネジ穴とする。又
同じ内側面の後部には、上下の面を面取りした筒軸部1
7,18を対称的に対向するように突設する。図2の右
側の部材13の内側面の上部には、ネジ穴を備える軸部
19を突設する。左右の部材13,14の下端部には、
対称的に半円状の保持部13f,14f(14fは図2
では隠れて表れていない。図7参照)を備える。左右の
部材13,14を組付、一体化する際、該保持部13
f,14fに金属製等のパイプ20の上端部を嵌合し、
ビス止めして本体12をパイプ20の上端部に取り付
け、支持し、パイプ20の周囲に、前記した把持部11
を取り付ける。On the inner side surface of each of the left and right members 13 and 14, cylindrical shaft parts 15 and 16 are coaxially and projectingly provided in the front part so as to be symmetrically opposed to each other, and 15 is a cylindrical hole shape. On the other hand, the end portion 16 is closed by the substrate portion of the member 14, and the inner peripheral portion is a screw hole. In addition, at the rear part of the same inner surface, a cylindrical shaft part 1 with chamfered upper and lower surfaces
7 and 18 are provided so as to be symmetrically opposed to each other. At the upper part of the inner side surface of the member 13 on the right side of FIG. 2, a shaft portion 19 provided with a screw hole is provided so as to project. At the lower ends of the left and right members 13 and 14,
Symmetrically semicircular holding portions 13f and 14f (14f is shown in FIG.
Then it does not appear hidden. (See FIG. 7). When the left and right members 13 and 14 are assembled and integrated, the holding portion 13
Fit the upper end of the pipe 20 made of metal or the like to f and 14f,
Attach the main body 12 to the upper end portion of the pipe 20 by screwing and support the main body 12 around the pipe 20, and hold the above-mentioned gripping portion 11 around the pipe 20.
Attach.
【0015】左側の部材14の基板部14aの前半部の
中間上部には、後述する支軸61のの頭部と遊合する通
し孔21を設ける。通し孔21の外周部には、外側に突
出する環状フランジ部21aを備える。又基板部14a
の通し孔21の外側部には、筒軸部16を中心とする円
弧状のガイド長孔22を備える。右側の部材13の基板
部13aの内面には、左側の通し孔21と同軸上にある
第1のカム23を設け、該第1のカム23は、本体と一
体、従って、本体を構成する片側の部材である部材13
の基板部13aの内面に、これと一体に、内側面方向に
突出するように形成する。具体的なカム形状は、後述す
る。カム23の中心部には、前記通し孔21と同軸の支
軸孔23aを幅方向に貫通するように備える。A through hole 21 is provided in the upper middle portion of the front half of the base plate portion 14a of the left member 14 so as to be loosely engaged with the head portion of a support shaft 61 which will be described later. An annular flange portion 21 a protruding outward is provided on the outer peripheral portion of the through hole 21. Also, the substrate portion 14a
An arc-shaped guide elongated hole 22 centered on the cylindrical shaft portion 16 is provided on the outer side of the through hole 21. A first cam 23, which is coaxial with the left through hole 21, is provided on the inner surface of the base plate portion 13a of the right member 13, and the first cam 23 is integrated with the main body, and thus one side that constitutes the main body. Member 13 which is a member of
It is formed on the inner surface of the base plate portion 13a so as to integrally project therewith so as to protrude in the inner side surface direction. The specific cam shape will be described later. At the center of the cam 23, a support shaft hole 23a coaxial with the through hole 21 is provided so as to penetrate in the width direction.
【0016】以上の左右の部材13,14間に、スロッ
トルレバー30、ロックレバー40、及び押圧機構を構
成する部品を介装する。スロットルレバー30は、レバ
ー部31、これの上端部に設けた筒軸部32、筒軸部3
2を支点とする扇状片33、扇状片33に設けられ、筒
軸部32を中心とする円弧状のガイド長孔34を備え
る。又スロットルレバー30は、扇状片33の一側面
で、上記筒軸部32の半体側の端部で、左側の部材14
の方向にノブ35を突設し、ノブ35は、上下を面取り
した。スロットルレバー30の扇状片33のノブ35と
は反対側の面で、上部には、スロットルレバー30と、
原動機3のスロットル弁の作動軸とを連結するコントロ
ールケーブル37の駒38を回動可能に保持する保持部
36を突設する(この部分の構造は図6参照)。Between the left and right members 13 and 14 described above, the throttle lever 30, the lock lever 40, and the parts constituting the pressing mechanism are interposed. The throttle lever 30 includes a lever portion 31, a cylinder shaft portion 32 provided at an upper end portion thereof, and a cylinder shaft portion 3.
A fan-shaped piece 33 having 2 as a fulcrum, and an arc-shaped guide elongated hole 34 provided in the fan-shaped piece 33 and having the cylindrical shaft portion 32 as a center are provided. The throttle lever 30 is provided on one side surface of the fan-shaped piece 33, at an end portion on the half body side of the cylindrical shaft portion 32, and on the left side member 14.
The knob 35 was projected in the direction of and the top and bottom of the knob 35 were chamfered. On the surface of the throttle lever 30 on the side opposite to the knob 35 of the fan-shaped piece 33, the throttle lever 30 and
A holding portion 36 that rotatably holds a piece 38 of a control cable 37 that connects the operation shaft of the throttle valve of the prime mover 3 is provided in a protruding manner (see FIG. 6 for the structure of this portion).
【0017】ロックレバー40は、長さのあるレバー部
41、レバー部41の上部に一体に設けられ、レバー部
41に対して直角方向に屈曲した基片部42、基片部4
2のレバー部41側の下端部に設けたフック部43を備
える。基片部42の先端部には、内筒部45、外筒部4
6の内外二重の筒部を一体に備える筒部44を一体に設
ける。筒部44の内筒部45は、軸方向の略々1/2程
度の長さにわたり設け、筒部の内筒部45を備えない内
端面には、図4で後述する第2のカム45を備える。こ
れ等のスロットルレバー30、ロックレバー40のを軸
支する際に、ロックレバー40の筒部44とスロットル
レバー30の扇状片33との間、及び扇状片33の部材
14の基板14a側との間に、押圧機構の押圧付勢手段
である一対の皿バネ52,52、3枚のワッシャ53,
53、一対のディスク状ゴム板54,54を介装する。The lock lever 40 is provided with a long lever portion 41, an upper portion of the lever portion 41, and a base piece portion 42 and a base piece portion 4 which are bent in a direction perpendicular to the lever portion 41.
The hook portion 43 is provided at the lower end portion of the second lever portion 41 side. The inner tubular portion 45 and the outer tubular portion 4 are provided at the tip of the base piece portion 42.
The tubular portion 44 integrally including the inner and outer double tubular portions 6 is integrally provided. The inner cylinder portion 45 of the cylinder portion 44 is provided over a length of about ½ in the axial direction, and a second cam 45 described later with reference to FIG. 4 is provided on the inner end surface of the cylinder portion that does not include the inner cylinder portion 45. Equipped with. When the throttle lever 30 and the lock lever 40 are pivotally supported, the space between the cylinder portion 44 of the lock lever 40 and the fan-shaped piece 33 of the throttle lever 30 and between the fan-shaped piece 33 and the member 14 of the member 14 side of the board 14a. In between, a pair of disc springs 52, 52, which are the pressing biasing means of the pressing mechanism, three washers 53,
53, a pair of disc-shaped rubber plates 54, 54 are interposed.
【0018】尚、図3中において、60は曲玉状の2次
調節レバー60を、61はボルトで構成した支軸を、6
2はナットを、63,63は首下が長いビスを、64は
パイプ20の結合用ビスを、65はナットを、66は2
次調節レバー60の止め用ビスを、67は捩りバネで構
成したスロットルレバー30の復帰バネを、68はコイ
ルバネで構成したロックレバー40の復帰バネを、69
は復帰バネ68の一端部を支持するビスを示す。In FIG. 3, reference numeral 60 designates a curved ball-shaped secondary adjusting lever 60, 61 designates a support shaft constituted by bolts, 6
2 is a nut, 63 and 63 are long-necked screws, 64 is a connecting screw for the pipe 20, 65 is a nut, and 66 is a 2
The fixing screw of the next adjusting lever 60, 67 is a return spring of the throttle lever 30 composed of a torsion spring, 68 is a return spring of the lock lever 40 composed of a coil spring, 69
Indicates a screw that supports one end of the return spring 68.
【0019】図4は本体12の右の部材13に一体設け
た第1のカムと、ロックレバー40に設けた第2のカム
を説明するカム部分の説明的な拡大斜視図である。第1
のカム23は、部材13と一体に、これの基板部13a
の内側面に突設されており、円筒状をなし、中心部に支
持孔23aを貫通して備える。外周部23bは真円で、
軸方向の突出端面に放射状に設けた複数の谷部24a…
(…は複数を表す。以下同じ)、複数の山部24b…か
らなるカム部24を備える。各谷部24a…と各山部2
4b…は、回転方向に設けた斜面24c…で連続し、反
対側は直角の壁で連続する。FIG. 4 is an explanatory enlarged perspective view of a cam portion for explaining the first cam integrally provided on the right member 13 of the main body 12 and the second cam provided on the lock lever 40. First
The cam 23 is integrally formed with the member 13,
Is formed in a cylindrical shape and has a support hole 23a penetrating through the center thereof. The outer peripheral portion 23b is a perfect circle,
A plurality of valleys 24a radially provided on the projecting end face in the axial direction.
(Representing a plurality, the same applies hereinafter), and a cam portion 24 including a plurality of mountain portions 24b. Each valley 24a ... and each mountain 2
4b ... Are continuous by slopes 24c provided in the rotational direction, and the opposite side is continuous by a right-angled wall.
【0020】ロックレバー40の筒部44の内筒部4
5、外筒部46は同軸状に形成されており、内筒部45
は、外筒部46の軸方向の長さの略々1/2程度の長さ
に設けられている。外筒部46の内筒部45から反対側
の軸方向への延長筒部46aの内径は、第1のカム23
の外周部23bと嵌合する径に設定する。延長筒部46
aの軸方向内端部で、内筒部45の軸方向内端部との間
に隔壁44aを設け、この隔壁44aに第1のカム23
と係合する第2のカム47を設ける。第2のカム47
は、そのカム部48が第1のカム部24の山、谷部と対
称的な山部、谷部を有し、相互に係合し、回転すること
で、カム作用により筒部44を軸方向に移動させる。Inner cylinder 4 of cylinder 44 of lock lever 40
5, the outer cylinder portion 46 is formed coaxially, and the inner cylinder portion 45
Is provided to have a length of about ½ of the axial length of the outer tubular portion 46. The inner diameter of the extension cylinder portion 46a of the outer cylinder portion 46 in the axial direction on the opposite side from the inner cylinder portion 45 is equal to that of the first cam 23.
The diameter is set so as to fit with the outer peripheral portion 23b. Extension tube part 46
A partition wall 44a is provided between the axial inner end portion of a and the axial inner end portion of the inner cylindrical portion 45, and the first cam 23 is provided on the partition wall 44a.
A second cam 47 is provided that engages with. Second cam 47
Has a ridge portion and a valley portion that are symmetrical to the ridge portion and the valley portion of the first cam portion 24, and they engage with each other and rotate, so that the tubular portion 44 is axially moved by the cam action. Move in the direction.
【0021】図5は操作ハンドルの縦断側面図である。
把持部11上の操作ハンドル本体12は、前記した左右
の部材13,14を接合、一体化して構成する。図のよ
うに左右の部材13,14の接合により、前部には前下
傾した開口部12aを前記した欠部13cで形成し、又
頂部の後下傾した後半部の開口部12bを前記した欠部
13d,14dで形成し、更に後部の下半部に設けた開
口部12cを前記した欠部13e,14eで形成する。
前記したパイプ20は操作杆5の上に起立、保持され、
周りにグリップ状把持部11で囲み、パイプ20は把持
部11内を縦通する。把持部11の後部の上半部には前
方に潜った縦長の凹部11aを設け、ロックレバー40
を把持した際、レバー部41が凹部40内に収納する。FIG. 5 is a vertical sectional side view of the operation handle.
The operation handle body 12 on the grip portion 11 is configured by joining and integrating the left and right members 13 and 14 described above. As shown in the figure, by joining the left and right members 13 and 14, a front downwardly inclined opening 12a is formed by the above-mentioned notch 13c, and a top rearwardly downwardly inclined rearward opening 12b is formed. The cutouts 13d and 14d are formed, and the opening 12c formed in the lower half of the rear part is formed by the cutouts 13e and 14e.
The pipe 20 described above stands and is held on the operating rod 5,
The grip 20 is surrounded by the grip-shaped grip portion 11, and the pipe 20 extends vertically through the grip portion 11. In the upper half of the rear part of the grip portion 11, a vertically elongated concave portion 11a is provided so as to dip forward.
When gripped, the lever portion 41 is housed in the recess 40.
【0022】パイプ20の下部には通し孔20aを設
け、該通し孔20aからコントロールケーブル37の最
外側の部材37cを導出し、コントルールケーブル37
は把持部11の底部の開口11bから前記した原動機3
の気化器に連結する。パイプ20の下部も、開口部11
bから下方に導出され、前記した操作杆5上に支持され
る。コントルールケーブル37のアウター37bの上端
部には口金37dを備え、口金37dは部材13の保持
部13fの上部に設けた係止部13hで保持され、コン
トロールケーブル37のインナー37aは、スロトルレ
バー30の保持部36に先端部の駒38が係合して保持
されている。パイプ20の上端部は、左右の部材13,
14の下部間に設けた保持部13f,14f間で保持し
(図7参照)、ビス64を部材13,14の下部に設け
た通し孔13g,14gに通し(図7参照)、ナット6
5で部材13,14の下部を結合しつつ、パイプ20と
操作ハンドル本体12とを結合する。A through hole 20a is provided in the lower portion of the pipe 20, and the outermost member 37c of the control cable 37 is led out from the through hole 20a to control the rule cable 37.
Is from the opening 11b at the bottom of the grip 11 to the prime mover 3 described above.
Connect to the vaporizer. The lower part of the pipe 20 also has the opening 11
It is led out downward from b and is supported on the above-mentioned operating rod 5. The upper end of the outer 37b of the control cable 37 is provided with a mouthpiece 37d, the mouthpiece 37d is held by a locking portion 13h provided on an upper portion of the holding portion 13f of the member 13, and the inner 37a of the control cable 37 is attached to the slotter lever 30. A piece 38 at the tip end is engaged with and held by the holding portion 36. The upper end of the pipe 20 has the left and right members 13,
It is held between the holding portions 13f and 14f provided between the lower portions of 14 (see FIG. 7), the screw 64 is passed through the through holes 13g and 14g provided in the lower portions of the members 13 and 14 (see FIG. 7), and the nut 6
The pipe 20 and the operation handle body 12 are connected while connecting the lower parts of the members 13 and 14 at 5.
【0023】本体12の後部上半部の開口部12bに
は、原動機3の始動スイッチ80を嵌装し、本体12内
の前部の上部の部材13,14の筒軸部15,16に
は、ビス63を通して結合し、筒軸部15,16にスロ
ットルレバー30の筒軸部32を外側から嵌合し、レバ
ー部31を本体12の前部に設けた開口部12aから前
下傾するように突出する。復帰バネ67のコイル部67
aを筒軸部32周に巻き付け、一端部67bを本体12
の天井部の一部に係止し、他端部67cをレバー部31
の基部に係止し、スロットルレバー30を筒軸部32を
支点として図5中時計方向に回動付勢する。この状態
で、レバー部31は図5のようの持上がり、前下傾する
ように前方に突出している。この状態が、中立位置であ
る。The starting switch 80 of the prime mover 3 is fitted in the opening 12b in the upper rear half of the main body 12, and the cylinder shafts 15, 16 of the upper members 13, 14 in the front of the main body 12 are fitted. , Through the screw 63, the cylinder shaft portion 32 of the throttle lever 30 is fitted to the cylinder shaft portions 15 and 16 from the outside, and the lever portion 31 is tilted forward and downward from the opening 12a provided in the front portion of the main body 12. Project to. Coil portion 67 of return spring 67
a is wound around the cylinder shaft 32, and one end 67b is attached to the main body 12
The other end 67c of the lever portion 31
5, and the throttle lever 30 is urged to rotate in the clockwise direction in FIG. 5 about the cylinder shaft portion 32 as a fulcrum. In this state, the lever portion 31 is lifted as shown in FIG. 5, and is projected forward so as to be inclined forward and downward. This state is the neutral position.
【0024】本体12内の中間部で、前記ビス63の後
下方には、前記した支軸61が幅方向に配設され、該支
軸61はスロットルレバー30の扇状片33に設けた弧
状のガイド長孔34を貫通する。支軸61周に、筒部4
4の内筒部45を介して回動可能に嵌合、支持されたロ
ックレバー40のレバー部41は、本体12の後部下半
部の開口部12cから後下傾するように後方に延出され
る。復帰バネ68は、一端部68aをフック部43に係
止し、部材13の頂部内面に突設した軸部19に止着し
たビス69に他端部68bを係止し、ロックレバー40
を支軸61を支点として図5中反時計方向に回動付勢す
る。ロックレバー40のレバー部41の上面の一部が、
半体13,14をビス63で接合することで形成される
筒軸部17,18の面とり部下面に当接し、ストッパー
を構成する。図5のように後方の斜め下方にレバー部4
1が突出した状態を中立位置とする。The support shaft 61 is disposed in the width direction in the middle of the main body 12 below the screw 63, and the support shaft 61 has an arc shape provided on the fan-shaped piece 33 of the throttle lever 30. The guide long hole 34 is penetrated. Around the support shaft 61, the cylindrical portion 4
The lever portion 41 of the lock lever 40, which is rotatably fitted and supported via the inner cylinder portion 45 of the No. 4, extends rearward from the opening 12c in the rear lower half of the main body 12 so as to incline rearward. Be done. The return spring 68 has one end portion 68 a locked to the hook portion 43, the other end portion 68 b locked to the screw 69 fixed to the shaft portion 19 projecting from the inner surface of the top of the member 13, and the lock lever 40.
Is urged to rotate counterclockwise in FIG. 5 with the support shaft 61 as a fulcrum. Part of the upper surface of the lever portion 41 of the lock lever 40
The half bodies 13 and 14 are brought into contact with the lower surfaces of the chamfered portions of the cylindrical shaft portions 17 and 18 formed by joining the half bodies 13 and 14 with screws 63 to form a stopper. As shown in FIG. 5, the lever portion 4 is slanted backward and downward.
The state in which 1 is projected is the neutral position.
【0025】図6は図5の6−6線断面図である。左右
の部材13,14の周片部13b,14bを突合せ、ビ
ス63を部材13,14の内側面上部の前部に設けた筒
軸部15,16に通し、螺合し、双方の前部上部を結合
し、又筒軸部15,16外周にスロットルレバー30の
筒軸部32が嵌合し、その外側に復帰バネ67のコイル
部67aが巻き付けられている構造が理解できる。又部
材13,14の後部下部の筒軸部17,18にビス63
を通し、双方の後部中間部を結合している構造が理解で
きる。又レバー部41が、筒軸部17,18の面とりし
た下面で構成されたストッパー部に当接して中立位置を
保持するのは前述の通りである。又コントロールケーブ
ル37のインナー37aの端部の保持する駒が、スロッ
トルレバー30の保持部36に嵌合され、保持されてい
る状態を理解することができる。FIG. 6 is a sectional view taken along line 6-6 of FIG. The peripheral piece portions 13b and 14b of the left and right members 13 and 14 are butted, and the screw 63 is passed through the cylindrical shaft portions 15 and 16 provided in the front portion of the inner side surface upper portion of the members 13 and 14 and screwed together to form both front portions. It can be understood that the upper part is coupled, the cylinder shaft part 32 of the throttle lever 30 is fitted around the cylinder shaft parts 15 and 16, and the coil part 67a of the return spring 67 is wound around the outside thereof. Also, screws 63 are attached to the cylindrical shaft portions 17 and 18 at the lower rear portions of the members 13 and 14.
It is possible to understand the structure in which the rear and middle parts of both are joined together through. As described above, the lever portion 41 contacts the stopper portion formed by the chamfered lower surfaces of the cylindrical shaft portions 17 and 18 to hold the neutral position. The Control B Lumpur cable 37 frames for holding the ends of the inner 37a of, fitted to the holding portion 36 of the throttle lever 30, it is possible to understand the state held.
【0026】図7は図5の7−7線断面図である。前記
したパイプ20の上端部を部材13,14の下部の保持
部13f,14fで抱持し、通し孔13f,14fにビ
ス64を通し、ナット65で締め付け、部材13,14
の下端部相互と、パイプ20とを共締めして結合してい
る。前記したスロットルレバー30の扇状片33で、部
材14側の面の先端部に突設したノブ35を、左側の部
材14の基板部14aに設けた弧状のガイド長孔22に
嵌合し、その端部を結合状態にある本体12の当該外側
面から突出する。ノブ35の先端部の小径部35aを2
次調節レバー60の裏面に設けた凹部60aに嵌合し、
端面からビス66を挿入して該レバー60とを結合す
る。2次調節レバー60は、本体12の左側の側面外に
配置されることとなる。FIG. 7 is a sectional view taken along line 7-7 of FIG. The upper end of the pipe 20 is held by the holding portions 13f and 14f below the members 13 and 14, the screws 64 are passed through the through holes 13f and 14f, and the nuts 65 are tightened.
The lower ends of the pipe 20 and the pipe 20 are fastened together and connected. With the fan-shaped piece 33 of the throttle lever 30, the knob 35 protruding from the tip of the surface on the member 14 side is fitted into the arc-shaped guide elongated hole 22 provided in the base plate portion 14a of the left member 14, and The ends project from the outer surface of the body 12 in the joined state. Set the small diameter portion 35a at the tip of the knob 35 to 2
Fit into the recess 60a provided on the back surface of the next adjustment lever 60,
A screw 66 is inserted from the end face to connect with the lever 60. The secondary adjustment lever 60 is arranged outside the left side surface of the main body 12.
【0027】図8は支軸部の拡大図で、スロットルレバ
ーの押圧機構を示す図である。支軸61は、実施例では
大径の円形の頭部61aと、これより小径の長い軸部6
1bと、軸部の先部に設けた雄ネジ部61cを備え、ボ
ルト状である。頭部61aは、部材14の基板部14a
に設けた前記の通し孔21に遊合し、例えば、頭部端面
に形成した六角穴61dにレンチを挿入し、回動させ
る。これに代え、六角の外形を有する頭部でも良く、こ
の場合にも、通し孔21に対して遊合し、回動可能とす
る。支軸61の軸部61bをスロットルレバー30の扇
状片33に設けた弧状のガイド長孔34に通し、更に軸
部61bをロックレバー40の筒部44の内筒部45の
筒孔45a内を通す。雄ネジ部61cは右側の部材13
の基板部13aの内側面に一体に設けた前記第1のカム
23の支持孔23aを通してその先端部を基板部13a
の外側面に突出させる。この際、支持孔23a内にはカ
ラー70を介装し、又第1のカム23を有する部分の外
側面には環状凹部13iを設け、ナット62の半部を収
容した。尚、カラーの代りに、支軸61のハンドル本体
12への固定を確実にするため、インサートナットとし
ても良く、この場合には、ナット62はロックナットを
構成する。FIG. 8 is an enlarged view of the support shaft portion, showing the pressing mechanism of the throttle lever. In the embodiment, the support shaft 61 includes a circular head portion 61a having a large diameter and a shaft portion 6 having a smaller diameter than this.
1b and a male screw portion 61c provided at the tip of the shaft portion, and has a bolt shape. The head portion 61a is the substrate portion 14a of the member 14.
The wrench is loosely fitted in the through hole 21 provided in the, and, for example, a wrench is inserted into the hexagonal hole 61d formed in the end face of the head and rotated. Instead of this, a head having a hexagonal outer shape may be used, and in this case also, the head is loosely engaged with the through hole 21 and is rotatable. The shaft portion 61b of the support shaft 61 is passed through the arc-shaped guide elongated hole 34 provided in the fan-shaped piece 33 of the throttle lever 30, and the shaft portion 61b is further inserted into the cylinder hole 45a of the inner cylinder portion 45 of the cylinder portion 44 of the lock lever 40. Pass through. The male screw part 61c is the member 13 on the right side.
Through the support hole 23a of the first cam 23 that is integrally provided on the inner surface of the base plate portion 13a.
To the outer surface of. At this time, a collar 70 was provided in the support hole 23a, and an annular recess 13i was provided on the outer surface of the portion having the first cam 23 to accommodate the half of the nut 62. Incidentally, instead of the collar, an insert nut may be used in order to ensure the fixing of the support shaft 61 to the handle body 12, and in this case, the nut 62 constitutes a lock nut.
【0028】ロックレバー40の筒部44の外筒部46
に設けた延長筒部46aの内周部46b内に、前記した
第1のカム23が回転可能に嵌合し、第1のカム23の
軸方向端面に設けたカム部24と、延長筒部46aの軸
方向の底に設けた第2のカム47のカム部48とを係合
させる。カム23,47の係合に際し、延長筒部46a
の内周部46b内に第1のカム23を嵌合したので、カ
ム部24,48間へのゴミや塵埃の侵入を防止し、カム
部24,48のゴミ等をゴミ等から保護し、押圧機構の
作動の安定と確実を保障することができる。支軸61の
軸部61b周で、スロットルレバー30の扇状片33の
部材14側の面と支軸61の頭部61aの端面61dと
の間に、外側から弾圧、付勢手段である皿バネ52、こ
の内側にワッシャ53、更に扇状片33の側面と接する
ようにゴム板54を介装する。扇状片33の半体側の面
には、内側からゴム板54、ワッシャ53、皿バネ52
を軸部61b周に嵌合するように介装し、皿バネ52と
ロックレバー40の筒部44の端面との間には、更にワ
ッシャ53を介装する。The outer cylinder portion 46 of the cylinder portion 44 of the lock lever 40.
The above-mentioned first cam 23 is rotatably fitted in the inner peripheral portion 46b of the extension cylinder portion 46a provided in the above, and the cam portion 24 provided on the axial end surface of the first cam 23 and the extension cylinder portion The cam portion 48 of the second cam 47 provided on the axial bottom of 46a is engaged. When engaging the cams 23 and 47, the extension cylinder portion 46a
Since the first cam 23 is fitted in the inner peripheral portion 46b of the, the intrusion of dust and dirt between the cam portions 24 and 48 is prevented, and the dust and the like of the cam portions 24 and 48 are protected from dust and the like. It is possible to ensure the stability and reliability of the operation of the pressing mechanism. A disc spring, which is a means for elastically urging and biasing from the outside, between the surface of the fan-shaped piece 33 of the throttle lever 30 on the member 14 side and the end surface 61d of the head 61a of the support shaft 61 around the shaft portion 61b of the support shaft 61. 52, a washer 53 inside this, and a rubber plate 54 in contact with the side surface of the fan-shaped piece 33. On the half-side surface of the fan-shaped piece 33, a rubber plate 54, a washer 53, a disc spring 52 are arranged from the inside.
Is fitted so as to fit around the shaft portion 61b, and a washer 53 is further interposed between the disc spring 52 and the end surface of the cylindrical portion 44 of the lock lever 40.
【0029】以上により、スロットルレバー30の押圧
機構50を構成する。スロットルレバー30は、扇状片
33の部分が、両側から皿バネ52,52で軸方向に適
度の押圧力で挟圧されている。尚、スロットルレバー3
0への押圧機構による弾圧付勢力は、支軸61がボルト
なので、頭部61aを介して回動させることにより、右
側の部材13を基準として、図8の軸方向左右に移動
し、スロットルレバー30への押圧力を調整することが
可能である。The pressing mechanism 50 for the throttle lever 30 is constructed as described above. In the throttle lever 30, the fan-shaped piece 33 is pressed from both sides by the disc springs 52, 52 with an appropriate pressing force in the axial direction. The throttle lever 3
Since the support shaft 61 is a bolt, the elastic force urging force by the pressing mechanism to 0 moves to the left and right in the axial direction of FIG. It is possible to adjust the pressing force on 30.
【0030】図9はスロットルレバー操作、及びロック
レバー操作状態を示す外観側面図である。次に操作ハン
ドル10のスロットルレバーの操作、及びロックレバー
操作を説明すると、操作ハンドル10を、例えば右手R
Hで把持する。掌で把持部11の上半部、及び本体12
の下半部を握り、人差し指F2で本体12の前方に突出
したスロットルレバー30のレバー部31を手前に引い
て押圧する。これによりスロットルレバー30は後方に
回動し、スロットルレバー30の所定の角度で、親指F
1下方の掌の部分によりロックレバー40のレバー部4
1を前方に押圧し、親指F1は2次調節レバー60の後
面に押し当てる。FIG. 9 is an external side view showing the throttle levers operation, and the lock lever operation state. Next, the operation of the throttle lever of the operation handle 10 and the operation of the lock lever will be described.
Hold with H. The upper half of the grip portion 11 and the body 12 with the palm
The lower half part is grasped, and the lever part 31 of the throttle lever 30 protruding forward of the main body 12 is pulled and pressed by the index finger F2. As a result, the throttle lever 30 is rotated rearward, and the thumb F is rotated at a predetermined angle of the throttle lever 30.
1 The lever portion 4 of the lock lever 40 by the lower palm portion
1 is pressed forward, and the thumb F1 is pressed against the rear surface of the secondary adjustment lever 60.
【0031】図10は、図9の状態における内部機構の
関係位置を示す縦断側面図である。スロットルレバー3
0のレバー部31を後方に人差し指F2で引くことで、
スロットルレバー30は、筒軸部15,16を支点とし
て復帰バネ67に抗して反時計方向に回動する。この結
果、コントロールケーブル37のインナー37aは上方
に引張され、原動機3の気化器のスロットル弁を開く方
向に作用し、原動機3の出力を上げる方向に調整する。
図10は原動機3の出力調整の上限状態(フルスロット
ル状態)を示す。爾後、或いはスロットルレバー30の
調整操作と併せてロックレバー40のレバー部41を掌
で前方に押圧する。ロックレバー40は復帰バネ68に
抗して支軸61を支点として図10の時計方向に回動す
る。これにより、筒部44内に設けた前記の第2のカム
47は回転し、第2のカム47は固定の第1のカム23
とカム部48,24相互が係合していることから、カム
作用で第2のカム47、従って、筒部44を含むロック
レバー40は、軸方向においてスロットルレバー30の
方向に移動する。FIG. 10 is a vertical cross-sectional side view showing the relative positions of the internal mechanism in the state of FIG. Throttle lever 3
By pulling the lever part 31 of 0 backward with the index finger F2,
The throttle lever 30 rotates counterclockwise against the return spring 67 with the cylinder shafts 15 and 16 as fulcrums. As a result, the inner 37a of the control cable 37 is pulled upward and acts in the direction of opening the throttle valve of the carburetor of the prime mover 3, thereby adjusting the output of the prime mover 3 in the direction of increasing it.
FIG. 10 shows the upper limit state (full throttle state) of the output adjustment of the prime mover 3. Subsequent, or together with the adjusting operation of the throttle levers 3 0 to press forward the lever portion 41 of the lock lever 40 with the palm. The lock lever 40 rotates in the clockwise direction in FIG. 10 about the support shaft 61 as a fulcrum against the return spring 68. As a result, the second cam 47 provided inside the tubular portion 44 rotates, and the second cam 47 is fixed to the first cam 23.
Since the cam portions 48 and 24 are engaged with each other, the cam action causes the second cam 47, and thus the lock lever 40 including the tubular portion 44, to move toward the throttle lever 30 in the axial direction.
【0032】これにより、スロットルレバー30の扇状
片33を挟む一対の皿バネ52,52は閉じる方向に押
圧され、扇状片33への押圧力が高くなる。従って、ス
ロットルレバー30への押圧機構50のスロットルレバ
ー30への押圧力が強くなり、スロットルレバー30を
当該位置で押圧保持することとなる。この状態が図10
である。スロットルレバー30のガイド長孔34は、支
軸である筒上部15,16を中心とする円弧なので、支
軸61とガイド長孔34とが係合関係にあっても、その
回動は支承無くなされる。As a result, the pair of disc springs 52, 52 sandwiching the fan-shaped piece 33 of the throttle lever 30 are pressed in the closing direction, and the pressing force on the fan-shaped piece 33 is increased. Therefore, the pressing force of the pressing mechanism 50 to the throttle lever 30 to the throttle lever 30 becomes strong, and the throttle lever 30 is pressed and held at that position. This state is shown in Figure 10.
Is. Since the guide elongated hole 34 of the throttle lever 30 is an arc centered on the cylinder upper portions 15 and 16 which are the support shafts, even if the support shaft 61 and the guide elongated hole 34 are in an engaging relationship, the rotation thereof is not supported. Done.
【0033】2次調節レバーについて述べる。2次調節
レバー60は、ガイド長孔22から突出したスロットル
レバー30のノブ35に前述のように固着されている。
図9のように、親指F1を2次調節レバー60の後面に
当てがい、図9のように、スロットルレバー31のレバ
ー部31を人差し指F2で引いた状態で親指F1を介し
て2次調節レバー60を前方に押圧する。これにより、
ロックレバー40でロック状態にあるスロットルレバー
30は、ノブ35を介して筒軸部32を支点として、前
記した押圧機構50による押圧力に抗し、図10中の時
計方向にスリップして回動する。この回動は、部材14
の基板部14aに設けた弧状のガイド長孔22で許容さ
れる。The secondary adjusting lever will be described. The secondary adjustment lever 60 is fixed to the knob 35 of the throttle lever 30 protruding from the elongated guide hole 22 as described above.
As shown in FIG. 9, the thumb F1 is applied to the rear surface of the secondary adjustment lever 60, and the lever portion 31 of the throttle lever 31 is pulled by the index finger F2 as shown in FIG. Press 60 forward. This allows
The throttle lever 30, which is locked by the lock lever 40, rotates around the cylinder shaft portion 32 as a fulcrum via the knob 35 against the pressing force of the pressing mechanism 50 and slips clockwise in FIG. To do. This rotation is performed by the member 14
This is allowed by the arc-shaped guide elongated hole 22 provided in the base plate portion 14a.
【0034】従って、スロットルレバー30をフルスロ
ットル位置まで押圧し、爾後、原動機3の出力(回転
数)を下げる(低回転数)に変更したい場合には、ロッ
クレバー40によるロック状態を維持したまま、2次調
節レバー60を前方に押圧することでスロットルレバー
30は出力を下げる方向に回動し、スロットルレバー3
0のロック状態を維持したまま、原動機3の出力(回転
数)を調節することができる。この際、2次調節レバー
60は、親指F1による押し勝手方向の操作なので、指
に力が入り易く、操作性良好に2次調節レバー60によ
るスロットルレバー30の2次調整を、スロットルレバ
ー30を、ロックレバー40によるロック操作状態下に
おいて容易に行うことができる。Therefore, when it is desired to press the throttle lever 30 to the full throttle position and then decrease the output (rotation speed) of the prime mover 3 (low rotation speed), the lock state of the lock lever 40 is maintained. By pressing the secondary adjustment lever 60 forward, the throttle lever 30 rotates in the direction of decreasing the output, and the throttle lever 3
The output (rotation speed) of the prime mover 3 can be adjusted while maintaining the locked state of 0. At this time, since the secondary adjustment lever 60 is operated by the thumb F1 in the push-hand direction, it is easy to apply force to the finger, and the secondary adjustment of the throttle lever 30 by the secondary adjustment lever 60 is performed with good operability. It can be easily performed under the lock operation state by the lock lever 40.
【0035】図11は、押圧機構の他の例を示す図で、
ロックレバーのロック作動前の状態を示す図である。他
の例の説明に際し、図中上記した本発明の実施例と同一
部分には同一符号を付し、詳細な説明は省略する。ロッ
クレバー40の基部に設けた筒部144は、軸方向の両
側に環状の凹部144a,144bを備える。部材13
側の凹部144aの軸方向の底には第2のカム47を設
ける。又部材14側、従って、スロットルレバー30を
有する側の凹部144b内には、皿バネ152を止め輪
171で支軸61の軸部61a上において係止する。皿
バネ152は、筒部144を図の右方向、従ってカム2
3,47が相互に係合する方向に弾圧付勢するように設
置する。一方、スロットルレバー30の扇状片33の支
軸61周りの両側には、内側にゴム板154,154
を、又これの外側にワッシャ153,153を、軸部6
1bに嵌合して介装する。尚、図11中において172
は、筒部144の軸方向中間部に設けた環状凹部144
c内に充填したシーリング用のグリースで、これに代
え、Oリングを用いても良い。以上により、押圧機構1
50を構成する。FIG. 11 is a view showing another example of the pressing mechanism,
It is a figure which shows the state before lock operation of a lock lever. other
In the description of the above example, the same parts as those in the above-described embodiment of the present invention are denoted by the same reference numerals and detailed description thereof will be omitted. The cylindrical portion 144 provided at the base of the lock lever 40 includes annular recesses 144a and 144b on both sides in the axial direction. Member 13
A second cam 47 is provided on the axial bottom of the side recess 144a. Further, in the recessed portion 144b on the side of the member 14, that is, on the side having the throttle lever 30, the disc spring 152 is locked by the retaining ring 171 on the shaft portion 61a of the support shaft 61. The disc spring 152 moves the tubular portion 144 to the right in the drawing, and thus the cam 2
3 and 47 are installed so that they are elastically biased in a direction in which they engage with each other. On the other hand, on both sides around the support shaft 61 of the fan-shaped piece 33 of the throttle lever 30, rubber plates 154 and 154 are provided inside.
And washers 153, 153 on the outside of the shaft portion 6
1b is fitted and inserted. 172 in FIG.
Is an annular recess 144 provided at an axially intermediate portion of the tubular portion 144.
The sealing grease filled in c may be replaced by an O-ring. As described above, the pressing mechanism 1
Make up 50.
【0036】図11に示したように、スロットルレバー
30は、扇状片33のロックレバー40の側にあるワッ
シャ153と、筒部144の対向する端部間に隙間があ
る。従って、ロックレバー40に設けた押圧機構150
による押圧力がスロットルレバー30には全く作用せ
ず、前述の復帰バネ67のみの弾性力で、図5の状態に
保持される。As shown in FIG. 11, in the throttle lever 30, there is a gap between the washer 153 on the lock lever 40 side of the fan-shaped piece 33 and the opposite end of the cylindrical portion 144. Therefore, the pressing mechanism 150 provided on the lock lever 40
The pressing force due to does not act on the throttle lever 30 at all, and is held in the state of FIG. 5 by the elastic force of only the return spring 67 described above.
【0037】図12は図11における他の例において、
ロックレバーをロック操作した状態を示す図である。ロ
ックレバー40を図9のように押圧することで、筒部1
44は支軸61の軸部61b周において回転する。この
結果、カム部24,48相互の係合で筒部144は、皿
バネ152に抗して図中左方向に移動する。筒部144
の左方向への移動で、これのこの側の端縁部が対向する
ワッシャ153に当たり、ゴム板153を介してスロッ
トルレバー30の扇状片33を、ゴム板154、ワッシ
ャ153を介して支軸61の頭部61aの内端面61e
に押し付ける。この状態を図12で示し、これにより、
スロットルレバー30は当該調整位置でロックされ、保
持されることとなる。FIG. 12 shows another example of FIG.
It is a figure which shows the state which carried out the lock operation of the lock lever. By pushing the lock lever 40 as shown in FIG.
The reference numeral 44 rotates around the shaft portion 61b of the support shaft 61. As a result, the tubular portion 144 moves leftward in the drawing against the disc spring 152 due to the mutual engagement of the cam portions 24 and 48. Tubular part 144
Of the throttle lever 30 through the rubber plate 153 to the supporting shaft 61 through the rubber plate 154 and the washer 153. Inner end face 61e of the head 61a of the
Press on. This state is shown in FIG.
The throttle lever 30 is locked and held at the adjustment position.
【0038】以上の他の例においては、スロットルレバ
ー30の操作力が前記した本発明の実施例に比較して軽
い。スロットルレバー30の操作力は、復帰バネ67、
及びコントロールケーブル37の引張力の合力に対する
抵抗力のみでなされる。そして、スロットルレバー30
の調整操作後に、ロックレバー40を前記したようにロ
ック操作することで、初めてロック力が作用することと
なる。In the other examples described above, the operation force of the throttle lever 30 is lighter than that of the above- described embodiment of the present invention . The operation force of the throttle lever 30 is the return spring 67,
And the resistance force to the resultant force of the pulling force of the control cable 37. And the throttle lever 30
After the adjusting operation of (1), the lock force is applied for the first time by locking the lock lever 40 as described above.
【0039】以上、実施例、他の例では、押圧機構5
0,150の押圧付勢手段として皿バネを用いたが、軸
方向の幅の小さなコイルバネ等を用いてもよい。又実施
例、他の例では、刈り払い機の操作レバー装置の実施例
として説明したが、操作レバー装置の実施の対象は、こ
れに限られない。実施の対象としては、下記の作業機が
ある。As described above, in the embodiment and other examples , the pressing mechanism 5 is used.
Although a disc spring is used as the pressing and urging means for 0 and 150, a coil spring or the like having a small axial width may be used. In the embodiment and other examples , the operation lever device of the brush cutter is described as an embodiment, but the operation lever device is not limited to this. The following work machines are targeted for implementation.
【0040】図13は原動機203で駆動される剪定用
の鋸機201を示す。鋸機201は原動機203を後部
に備え、本体203aの側方に把持ハンドル207を備
え、作業者Mは左手LHで把持ハンドル207を把持
し、操作ハンドル210を右手RHで把持し、操作ハン
ドル210は上記した操作レバー装置を備え、原動機2
03を操作する。本体203aから前方に突出した鋸部
206で樹木の剪定作業を行う。このような剪定用の鋸
201にも、本発明にかかる操作レバー装置を実施する
ことができる。FIG. 13 shows a pruning saw machine 201 driven by a prime mover 203. The saw machine 201 is provided with a prime mover 203 at a rear portion thereof and a grip handle 207 on a side of a main body 203a. Is equipped with the above-mentioned operation lever device, and is a prime mover 2
Operate 03. The pruning work of the tree is performed by the saw portion 206 protruding forward from the main body 203a. The operation lever device according to the present invention can be also applied to the pruning saw 201.
【0041】図14は薬液散布機301に実施した例を
示し、原動機303をフレーム302で作業者Mが背負
い、フレーム302には、原動機303の下方にポンプ
付き薬液タンク390を搭載する。剛性のあるパイプ3
05の先端部に散布ノズル306を備え、パイプ305
の基部には把持用のハンドル307を備え、これを手R
Hで把持し、この部分に前記した操作レバー装置を設け
る。パイプ305とポンプ付き薬液タンク390とをホ
ース304で接続し、原動機303の駆動でポンプを駆
動し、タンク内に貯溜した薬液を散布ノズル306から
散布し、樹木等に薬液を散布する。このような薬液散布
機301にも、本発明にかかる操作レバー装置を実施す
ることができる。FIG. 14 shows an example in which the chemical spraying machine 301 is used. A worker M carries a prime mover 303 on a frame 302, and a chemical solution tank with a pump 390 is mounted below the prime mover 303 on the frame 302. Rigid pipe 3
05 is equipped with a spray nozzle 306 at the tip of the pipe 305
A handle 307 for gripping is provided at the base of the
It is gripped with H, and the above-mentioned operation lever device is provided in this portion. The pipe 305 and the chemical liquid tank 390 with a pump are connected by a hose 304, and the pump is driven by the driving of the prime mover 303, and the chemical liquid stored in the tank is sprayed from the spray nozzle 306 to spray the chemical liquid on trees and the like. The operation lever device according to the present invention can also be applied to such a chemical liquid sprayer 301.
【0042】図15は噴出機401に実施した例を示
し、原動機403を作業者Mはフレーム402を介して
背負い、操作杆に相当する噴出筒405の基部に操作ハ
ンドル410を設け、これに前記した操作レバー装置を
備え、右手RHで操作する。噴出筒405はホース40
4で原動機403で駆動されるコンプレッサー490に
接続され、圧気をパイプ405に供給し、先端部のノズ
ル部405aから圧気を噴出し、路上等の塵埃や落葉等
のゴミを寄せる。このような噴出機401にも、本発明
にかかる操作レバー装置を実施することができる。FIG. 15 shows an example in which the ejector 401 is used. The operator M carries the engine M 403 on his / her back via the frame 402, and an operating handle 410 is provided at the base of an ejecting cylinder 405 corresponding to the operating rod. It is equipped with the operation lever device described above, and is operated by the right hand RH. The spout 405 is the hose 40.
4 is connected to a compressor 490 driven by a prime mover 403, supplies compressed air to a pipe 405, ejects compressed air from a nozzle portion 405a at the tip end, and collects dust such as dust on the road or fallen leaves. The operation lever device according to the present invention can also be applied to the ejector 401.
【0043】図16は集塵機501に実施他例を示し、
フレーム502で背負う原動機503、これで駆動され
る吸引機590を備え、ホース504で吸引機590と
操作杆に相当するパイプ505とを接続し、パイプ50
5の基部には操作ハンドル510を備え、これを手RH
で把持し、操作ハンドル510には前記した操作レバー
装置を備える。パイプ505の先端部には集塵部506
を備え、塵埃や落葉等を集塵する。このような集塵機5
01にも、本発明にかかる操作レバー装置を実施するこ
とができる。以上図13〜図16で作業機の一例を示し
たが、本発明にかかる操作レバー装置の実施の対象は、
上記に限られず任意であり、各種の原動機付作業機の操
作レバー装置として実施することができる。FIG. 16 shows another embodiment of the dust collector 501.
A frame 502 is equipped with a prime mover 503 and a suction machine 590 driven by this, and a hose 504 connects the suction machine 590 and a pipe 505 corresponding to an operating rod.
The base of No. 5 is equipped with an operation handle 510, which can be used as a hand RH.
The operation handle 510 is equipped with the above-described operation lever device. A dust collecting portion 506 is provided at the tip of the pipe 505.
Is equipped to collect dust and fallen leaves. Such a dust collector 5
Also in 01, the operation lever device according to the present invention can be implemented. Although an example of the working machine is shown in FIGS. 13 to 16 above, the target of the operation lever device according to the present invention is as follows.
The present invention is not limited to the above, and can be implemented as an operating lever device for various types of working machines with a prime mover.
【0044】[0044]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項1は、原動機で駆動される作業器具と、原
動機を制御する操作部を有する操作ハンドルを備えた作
業機において、操作ハンドルに設けた操作部は、スロッ
トルレバーと、スロットルレバーの操作位置を押圧機構
を介して規制するロックレバーとを備え、押圧機構は、
ロックレバーの支軸と同軸上で操作ハンドルの本体に一
体に形成された第1のカムと、第1のカムと係合するロ
ックレバーに設けられた第2のカムと、第2のカムの反
対側の面の側に配置された押圧付勢手段とで構成し、前
記第2のカムが、前記押圧付勢手段を介して前記スロッ
トルレバーを押圧するようにしたので、ロックレバーに
よるスロットルレバーの当該操作位置におけるロック
を、ロックレバーに付設した押圧機構で確実に行うこと
が可能である。The present invention has the following effects due to the above configuration. According to a first aspect of the present invention, in a working machine including a working tool driven by a prime mover and an operating handle having an operating section for controlling the prime mover, the operating section provided on the operating handle includes a throttle lever and an operating position of the throttle lever. With a lock lever that regulates via a pressing mechanism, the pressing mechanism is
A first cam integrally formed with the main body of the operation handle coaxially with the support shaft of the lock lever, a second cam provided on the lock lever engaging with the first cam, and a second cam of the second cam. constituted by the pressing biasing means arranged on a side opposite to the surface, before
Note that the second cam is provided with the slot via the pressing biasing means.
Since the torque lever is pressed, it is possible to reliably lock the throttle lever at the operation position by the lock lever by the pressing mechanism attached to the lock lever.
【0045】特に本発明では、スロットルレバーをロッ
ク作動するロックレバーの押圧機構を構成する2個のカ
ムを、その一方を操作ハンドル本体に一体に形成したの
で、部品点数の削減を図ることができ、押圧機構の構造
の簡素化を図ることができる。又第1のカムを予めハン
ドル本体に一体化することで、操作レバー装置の組立
上、カムの組付工数が減少し、組立性の優れた操作レバ
ー装置を得ることができる。更に、カムを操作ハンドル
本体と一体に設けるので、操作ハンドル側の第1のカム
を基準として第2のカムを成形、組み付けるので、精度
良好な押圧機構のカム機構を得ることができる。In particular, according to the present invention, since the two cams forming the lock lever pressing mechanism for locking the throttle lever are formed integrally with the operation handle body, the number of parts can be reduced. The structure of the pressing mechanism can be simplified. Further, by integrating the first cam with the handle body in advance, the number of man-hours for assembling the cam is reduced in assembling the operation lever device, and the operation lever device having excellent assembling property can be obtained. Further, since the cam is provided integrally with the operation handle body, the second cam is formed and assembled with the first cam on the operation handle side as a reference, so that the cam mechanism of the pressing mechanism with good accuracy can be obtained.
【0046】請求項2は、請求項1において、操作部の
本体に一体に設けた第1のカム外周、又はロックレバー
に設けた第2のカム外周の一方に筒状部を設け、他方の
カムを該筒状部内に嵌合したので、第1のカム、第2の
カムとは、内外の嵌合関係となり、請求項1の効果に加
えるに、双方のカム間に塵埃やゴミ等が侵入するのを防
止することができる。従って、防塵性に優れ、カム間に
塵埃やゴミ等の侵入を防止して、カム作動の確実、円滑
な作動を保障することができる。特に、塵埃が多い屋外
で作業する刈り払い機、薬液散布機、集塵機等では、操
作部に塵埃やゴミ等が侵入する虞が多く、防塵性を高度
に確保し、スロットルレバーのロック機構の作動の確
実、円滑を図る上で、好ましい。又防塵性を確保する構
造として、対向するカムの一方を突部、他方をこれと嵌
合する筒部や凹部とすることで達成することができるの
で、構造も簡素である。According to a second aspect of the present invention, in the first aspect, the tubular portion is provided on one of the outer periphery of the first cam integrally provided on the main body of the operating portion or the outer periphery of the second cam provided on the lock lever, and the other of the two is provided. Since the cam is fitted in the tubular portion, the first cam and the second cam have an inner and outer fitting relationship, and in addition to the effect of claim 1, dust and dirt are present between the two cams. It is possible to prevent intrusion. Therefore, it is excellent in dustproofness, and it is possible to prevent dust and dirt from entering between the cams, and to ensure the reliable and smooth operation of the cams. In particular, with a brush cutter, chemical sprayer, dust collector, etc. that work outdoors where there is a lot of dust, there is a danger that dust and dirt will enter the operating section, ensuring a high degree of dust resistance and operating the throttle lever locking mechanism. This is preferable for ensuring the reliability and smoothness. Further, as a structure for ensuring dustproofness, it can be achieved by forming one of the facing cams as a protrusion and the other as a cylinder or a recess to be fitted therein, so that the structure is simple.
【0047】請求項3は、請求項1において、押圧付勢
手段を、第1、第2のカム相互を係合し、スロットルレ
バーの一部を押圧するように構成したので、請求項1の
効果に加えるに、スロットルレバーの操作に際し、スロ
ットルレバーのコントロールケーブルの引張力の他に、
押圧機構の押圧付勢手段により適度の摩擦力が得られ
る。従って、スロットルレバーの操作上適度な抵抗を得
ることができ、スロットルレバーの操作性が良好なもの
を得ることができる。According to a third aspect of the present invention, in the first aspect, the pressing biasing means is configured to engage the first and second cams with each other to press a part of the throttle lever. In addition to the effect, when operating the throttle lever, in addition to the pulling force of the throttle lever control cable,
An appropriate frictional force can be obtained by the pressing and urging means of the pressing mechanism. Therefore, it is possible to obtain an appropriate resistance in the operation of the throttle lever, and to obtain a throttle lever with good operability.
【図1】作業機による作業の一例を示す説明図FIG. 1 is an explanatory view showing an example of work by a work machine.
【図2】操作ハンドルの外観を示す斜視図FIG. 2 is a perspective view showing the appearance of an operation handle.
【図3】操作ハンドルの操作部本体を分解して示した斜
視図で、個々の構成部品を分解して示した図FIG. 3 is an exploded perspective view of the main body of the operation portion of the operation handle, showing the individual components in an exploded view.
【図4】第1のカムと、第2のカムを説明するカム部分
の説明的な拡大斜視図FIG. 4 is an explanatory enlarged perspective view of a cam portion for explaining a first cam and a second cam.
【図5】操作ハンドルの縦断側面図FIG. 5 is a vertical sectional side view of the operation handle.
【図6】図5の6−6線断面図6 is a sectional view taken along line 6-6 of FIG.
【図7】図5の7−7線断面図7 is a sectional view taken along line 7-7 of FIG.
【図8】支軸部の拡大図で、スロットルレバーの押圧機
構を示す図FIG. 8 is an enlarged view of a support shaft portion showing a pressing mechanism of a throttle lever.
【図9】スロットルレバーレバー操作、及びロックラバ
ー操作状態を示す外観側面図FIG. 9 is an external side view showing the state of operating the throttle lever and the lock rubber.
【図10】図9の状態における内部機構の関係位置を示
す縦断側面図FIG. 10 is a vertical cross-sectional side view showing the relative positions of the internal mechanism in the state of FIG.
【図11】押圧機構の他の例を示す図で、ロックレバー
のロック作動前の状態を示す図FIG. 11 is a view showing another example of the pressing mechanism, showing the state before the lock operation of the lock lever.
【図12】図11における他の例において、ロックレバ
ーをロック操作した状態を示す図FIG. 12 is a diagram showing a state where the lock lever is locked in another example of FIG. 11.
【図13】原動機で駆動される剪定用の鋸に実施他例を
示す説明図FIG. 13 is an explanatory view showing another example implemented in a pruning saw driven by a prime mover.
【図14】薬液散布機に実施した例を示す説明図FIG. 14 is an explanatory diagram showing an example implemented in a chemical sprayer.
【図15】ゴミを圧気で寄せる噴出機に実施した例を示
す説明図FIG. 15 is an explanatory view showing an example implemented in a blower for drawing dust with compressed air.
【図16】集塵機に実施他例を示す説明図FIG. 16 is an explanatory view showing another example implemented in the dust collector.
1,201,301,401,501…作業機、 3,
203,303,403,503…原動機、 6,20
6,306,506…作業器具、 10…操作ハンド
ル、 12…ハンドル本体、 23…第1のカム、 3
0…スロットルレバー、 40…ロックレバー、 46
a…筒状部、 47…第2のカム、 52,152…押
圧付勢手段、 61…支軸、 171…係止手段。1, 201, 301, 401, 501 ... Working machine, 3,
203, 303, 403, 503 ... Motor, 6,20
6, 306, 506 ... Work implement, 10 ... Operation handle, 12 ... Handle body, 23 ... First cam, 3
0 ... Throttle lever, 40 ... Lock lever, 46
a ... Cylindrical part, 47 ... Second cam, 52, 152 ... Press urging means, 61 ... Support shaft, 171 ... Locking means.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 池田 貴志 埼玉県和光市中央1丁目4番1号 株式 会社本田技術研究所内 (56)参考文献 特開 平8−303263(JP,A) 実開 昭60−41539(JP,U) (58)調査した分野(Int.Cl.7,DB名) A01D 34/68,34/76 A01M 7/00 F02D 11/02 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takashi Ikeda, Takashi Ikeda, 1-4-1, Chuo, Wako-shi, Saitama, Ltd. Inside the Honda R & D Co., Ltd. (56) Reference: JP-A-8-303263 (JP, A) 60-41539 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) A01D 34/68, 34/76 A01M 7/00 F02D 11/02
Claims (3)
を制御する操作部を有する操作ハンドルを備えた作業機
において、 前記操作ハンドルに設けた操作部は、スロットルレバー
と、該スロットルレバーの操作位置を押圧機構を介して
規制するロックレバーとを備え、 前記押圧機構は、ロックレバーの支軸と同軸上で前記操
作ハンドルの本体に一体に形成された第1のカムと、該
第1のカムと係合するロックレバーに設けられた第2の
カムと、第2のカムの反対側の面の側に配置された押圧
付勢手段とを備え、 前記第2のカムが、前記押圧付勢手段を介して前記スロ
ットルレバーを押圧するようにした、 こと を特徴とする作業機の操作レバー装置。1. A working machine provided with a work implement driven by a prime mover and an operating handle having an operating section for controlling the prime mover, wherein the operating section provided on the operating handle includes a throttle lever and an operation of the throttle lever. A lock lever for controlling the position of the lock lever via a pressing mechanism, wherein the pressing mechanism includes a first cam integrally formed with the main body of the operation handle coaxially with a support shaft of the lock lever, and the first cam. A second cam provided on a lock lever that engages with the cam, and a pressure urging means disposed on the side of the surface opposite to the second cam are provided, and the second cam is provided with the pressing force . The slot through the force means
And to press the Ttorureba control lever apparatus for a working machine, characterized in that.
カム外周、又は前記ロックレバーに設けた第2のカム外
周の一方に筒状部を設け、他方のカムを該筒状部内に嵌
合したことを特徴とする請求項1記載の作業機の操作レ
バー装置。2. A tubular portion is provided on one of the outer periphery of a first cam provided integrally with the main body of the operation portion or the outer periphery of a second cam provided on the lock lever, and the other cam is provided inside the tubular portion. The operating lever device for a working machine according to claim 1, wherein the operating lever device is fitted to the operating lever device.
カム相互を係合し、前記スロットルレバーの一部を押圧
するように構成したことを特徴とする請求項1記載の作
業機の操作レバー装置。3. The work according to claim 1, wherein the pressing biasing means is configured to engage the first and second cams with each other and press a part of the throttle lever. Machine control lever device.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18123398A JP3489808B2 (en) | 1998-06-26 | 1998-06-26 | Operation lever device for work equipment |
US09/344,229 US6209412B1 (en) | 1998-06-26 | 1999-06-25 | Operation-control lever unit for engine-powered working machine |
DE69915176T DE69915176T2 (en) | 1998-06-26 | 1999-06-25 | Operating handle for a motor-driven device |
EP99112280A EP0967374B1 (en) | 1998-06-26 | 1999-06-25 | Operation-control lever unit for engine-powered working machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18123398A JP3489808B2 (en) | 1998-06-26 | 1998-06-26 | Operation lever device for work equipment |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003109997A Division JP2003343290A (en) | 2003-04-15 | 2003-04-15 | Operation lever unit for working machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000004636A JP2000004636A (en) | 2000-01-11 |
JP3489808B2 true JP3489808B2 (en) | 2004-01-26 |
Family
ID=16097138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18123398A Expired - Fee Related JP3489808B2 (en) | 1998-06-26 | 1998-06-26 | Operation lever device for work equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3489808B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4027043B2 (en) * | 2001-01-15 | 2007-12-26 | 本田技研工業株式会社 | Brush cutter control lever |
FR2907561A1 (en) * | 2006-10-19 | 2008-04-25 | Frederic Vellutini | SLIDING CONTROL DEVICE WITH TORQUE HANDLE WITH HANDLE |
JP5248442B2 (en) * | 2009-08-06 | 2013-07-31 | スターテング工業株式会社 | Engine throttle adjustment device for brush cutter |
WO2011152469A1 (en) * | 2010-06-02 | 2011-12-08 | 株式会社ミクニ | Acceleration device |
-
1998
- 1998-06-26 JP JP18123398A patent/JP3489808B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2000004636A (en) | 2000-01-11 |
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