JPH035707Y2 - - Google Patents

Info

Publication number
JPH035707Y2
JPH035707Y2 JP1985018937U JP1893785U JPH035707Y2 JP H035707 Y2 JPH035707 Y2 JP H035707Y2 JP 1985018937 U JP1985018937 U JP 1985018937U JP 1893785 U JP1893785 U JP 1893785U JP H035707 Y2 JPH035707 Y2 JP H035707Y2
Authority
JP
Japan
Prior art keywords
operating
path
lever
operating lever
main clutch
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
Application number
JP1985018937U
Other languages
Japanese (ja)
Other versions
JPS61138025U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1985018937U priority Critical patent/JPH035707Y2/ja
Priority to KR2019860001355U priority patent/KR920003662Y1/en
Publication of JPS61138025U publication Critical patent/JPS61138025U/ja
Application granted granted Critical
Publication of JPH035707Y2 publication Critical patent/JPH035707Y2/ja
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
    • B60K20/02—Arrangement or mounting of change-speed gearing control devices in vehicles of initiating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/08—Range selector apparatus
    • F16H59/10—Range selector apparatus comprising levers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/08—Multiple final output mechanisms being moved by a single common final actuating mechanism
    • F16H63/16—Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism
    • F16H63/18—Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism the final actuating mechanism comprising cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H2059/0256—Levers for forward-reverse selection only, e.g. for working machines having a separate lever for switching between forward and reverse mode

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Control Of Transmission Device (AREA)
  • Mechanical Control Devices (AREA)

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、歩行型作業機の前後進切換え操作構
造に関し、詳しくは、１つの操作レバーで機体の
前後進切換えを可能に構成したものに関する。[Detailed description of the invention] [Field of industrial application] The present invention relates to an operating structure for switching forward and backward movement of a walk-behind work machine, and more specifically, relates to an operation structure that allows switching of the machine body forward and backward with a single operating lever. .

〔従来の技術〕[Conventional technology]

従来、１つの操作レバーで機体の前後進の切換
えを行える構成のものとしては、例えば、実開昭
56−156119号公報に示すように、操作レバーの操
作経路を段違いに形成し、この段違い部を中立位
置に設定し、かつ、段違い部の前後の操作経路端
を夫々、機体を前後進させる操作位置に設定した
ものがある。 Conventionally, examples of configurations that allow switching between forward and backward movement of the aircraft with a single operating lever include the
As shown in Publication No. 56-156119, the operating path of the operating lever is formed at different levels, the uneven area is set to the neutral position, and the operation path ends before and after the uneven area are used to move the aircraft forward or backward, respectively. There is something set in the position.

そして、このように操作レバーの操作位置を設
定したものでは、通常、前記中立位置に操作レバ
ーを設定するには作業者の人為操作で行うよう構
成することが多い。因みに操作レバーをこの中立
位置に保持するため、操作レバーに対し、前後進
操作位置の方向から夫々略等しく、比較的弱い付
勢力を加える構成ものもある（参考文献記載せ
ず）。 In the case where the operating position of the operating lever is set in this way, the operating lever is usually set to the neutral position by manual operation by the operator. Incidentally, in order to maintain the operating lever in this neutral position, there is also a structure in which a relatively weak biasing force is applied to the operating lever from the directions of the forward and backward operating positions, respectively, which are approximately equal and relatively weak (references not listed).

（考案が解決しようとする問題点） 一般に、バインダー、管理機等の歩行型作業機
では、機体の後方に作業者が位置するため、作業
中に於て、知らずに作業者の手や衣服の袖が操作
レバーに触れる等、作業者の意志に反した原因
で、操作レバーが機体後進位置に操作されると危
険な場合がある。(Problem that the invention aims to solve) Generally, with walk-behind work machines such as binders and management machines, the worker is located at the rear of the machine. It may be dangerous if the control lever is moved to the reverse position due to reasons such as touching the control lever with the operator's sleeve, etc. against the operator's will.

しかし、従来の操作構造では、作業者の意志に
反して操作レバーが機体後進位置に操作される
と、作業者が、迅速な操作で操作レバーを中立位
置まで確実に操作しなければならず改善の余地が
あつた。 However, with the conventional operating structure, if the operating lever is moved to the reverse position of the aircraft against the operator's will, the operator must quickly and reliably move the operating lever to the neutral position. There was room for.

本考案の目的は、歩行型作業機に於て、上記不
都合を解消する点にある。 An object of the present invention is to eliminate the above-mentioned disadvantages in a walk-behind work machine.

〔問題点を解決するための手段〕[Means for solving problems]

本考案の特徴は、操作レバーの操作経路を、前
後中間操作位置より前方へ向かう第１操作経路
と、中間操作位置より後方へ向かう第２操作経路
と、中間操作位置において両経路をつなぐ横向き
経路とからなる段違状に形成し、前記横向き経路
での第１操作経路側への操作で前進状態が、第２
操作経路側への操作で後進状態が夫々もたらされ
るように操作レバーと前後進切換え機構とを連動
連結するとともに、操作レバーの中間操作位置で
主クラツチが切り操作され、中間操作位置から前
方及び後方へのいづれの操作によつても主クラツ
チが入り操作されるように、操作レバーと切り付
勢された主クラツチとをカム機構を介して連動連
結し、かつ、カム機構を介して操作レバーに与え
られる主クラツチ操作反力が第１操作経路より第
２操作経路で大きく働くよう前記カム機構を構成
してある点にあり、その作用、及び効果は次の通
りである。 The feature of the present invention is that the operation path of the control lever is divided into a first operation path that goes forward from the front-rear intermediate operation position, a second operation path that goes rearward from the intermediate operation position, and a lateral path that connects both paths at the intermediate operation position. It is formed in a stepped shape consisting of
The operating lever and the forward/reverse switching mechanism are interlocked and connected so that operation toward the operating path brings about the reverse state, and the main clutch is disengaged at the intermediate operating position of the operating lever, and from the intermediate operating position forward and backward The operating lever and the biased main clutch are interlocked and connected via a cam mechanism so that the main clutch is engaged and operated by either operation of the main clutch. The cam mechanism is configured so that the applied main clutch operation reaction force acts more on the second operation path than on the first operation path, and its actions and effects are as follows.

〔作 用〕[Effect]

つまり、上記の如く、操作レバーに与えられる
主クラツチ操作反力を、第１操作経路より第２操
作経路で大きく設定してあるため、機体後進位置
に設定する際に操作レバーに加わる操作抵抗が、
機体前進状態に設定する際に操作レバーに加わる
操作抵抗より大きくなり、しかも、この操作抵抗
は操作レバーを中間操作位置に復元させる力とし
て作用する。 In other words, as mentioned above, the main clutch operation reaction force applied to the operating lever is set to be larger in the second operating path than in the first operating path, so the operating resistance applied to the operating lever when setting the aircraft to the reverse position is reduced. ,
This is greater than the operating resistance applied to the operating lever when setting the aircraft forward state, and moreover, this operating resistance acts as a force to restore the operating lever to the intermediate operating position.

〔考案の効果〕[Effect of idea]

従つて、操作系に必要なカム機構を有効に利用
することによつて、知らずに作業者の手や衣服の
袖が操作レバーに触れた場合でも、操作レバーが
機体後進方向に操作され難く、又、操作レバーが
機体後進方向に操作されても、操作レバーを操作
経路の前後中間操作位置まで迅速に復帰できて安
全な操作構造が得られた。 Therefore, by effectively utilizing the cam mechanism necessary for the operating system, even if the operator's hand or sleeve of clothing touches the operating lever without realizing it, the operating lever is less likely to be operated in the backward direction of the aircraft. Moreover, even if the operating lever is operated in the backward direction of the aircraft, the operating lever can be quickly returned to the intermediate operating position between the front and rear of the operating path, resulting in a safe operating structure.

〔実施例〕〔Example〕

以下、本考案の実施例を図面に基づいて説明す
る。 Hereinafter, embodiments of the present invention will be described based on the drawings.

第７図に示すように、機体前部に、植立穀稈を
引起す装置１、バリカン型の刈取装置２、刈取つ
た穀稈を機体右側に送る搬送装置３、搬送装置３
からの刈取穀稈を結束して機体外に放出する装置
４で成る作業部Ａを設け、機体後部にエンジン５
を設けると共に、機体の中央部に、その下端に左
右一対の推進車輪６を軸架したミツシヨンケース
７を設け、更に、ミツシヨンケース７とエンジン
５とをベルトテンシヨン式の主クラツチ８で連動
連結し、又、ミツシヨンケース７の上部から後方
に向けてハンドル杆９を延設し、もつて、歩行型
作業機の一例としてバインダーを構成する。 As shown in Fig. 7, at the front of the machine, there is a device 1 for pulling up planted grain culms, a clipper-type reaping device 2, a transport device 3 for sending the harvested grain culms to the right side of the machine, and a transport device 3.
A working section A consisting of a device 4 for tying together the harvested grain culms and discharging them outside the aircraft is provided, and an engine 5 is installed at the rear of the aircraft.
In addition, a transmission case 7 with a pair of left and right propulsion wheels 6 mounted on its lower end is provided in the center of the fuselage, and the transmission case 7 and engine 5 are connected by a belt tension type main clutch 8. The handle rods 9 are interlocked and connected, and a handle rod 9 is extended rearward from the upper part of the transmission case 7, thereby forming a binder as an example of a walk-behind working machine.

第８図に示すように、前記ミツシヨンケース７
の後部に、前記作業部Ａへの駆動力を断続する刈
取クラツチレバー１０及び、機体に前進速度を４
段に変更設定する主変速レバー１１を設ける。 As shown in FIG. 8, the mission case 7
At the rear of the machine, there is a reaping clutch lever 10 that intermittents the driving force to the working section A, and a mower that controls the forward speed of the machine.
A main shift lever 11 is provided for changing gears.

又、前記ハンドル杆９の左右に操向クラツチレ
バー１２，１２を設け、ハンドル杆９の右側に、
前記主クラツチ８の断続と、機体の前後進の切換
を同時に行う操作レバー１３を設ける。 Further, steering clutch levers 12, 12 are provided on the left and right sides of the handle bar 9, and on the right side of the handle bar 9,
An operating lever 13 is provided for simultaneously disengaging and disengaging the main clutch 8 and switching the machine forward and backward.

第２図に示すように、前記操作レバー１３の操
作経路Ｓは、その中間操作位置Ｎより前方に向う
第１操作経路S1、後方に向う第２操作経路S2、及
び中間操作位置Ｎに於て両経路S1，S2をつなぐ横
向き経路S3で段違い状に形成してあり、この中間
操作位置Ｎに操作レバー１３を設定すると、主ク
ラツチ８を切り操作し、又、この中間操作位置Ｎ
より前方および、後方のいづれかに操作レバー１
３を操作すると主クラツチ８を入り操作できるよ
う構成してあるる。 As shown in FIG. 2, the operating path S of the operating lever 13 includes a first operating path S 1 going forward from the intermediate operating position N, a second operating path S 2 going backward, and an intermediate operating position N. A horizontal path S 3 connecting both paths S 1 and S 2 is formed in a stepped manner, and when the operating lever 13 is set to this intermediate operation position N, the main clutch 8 is disengaged and operated. Position N
Operation lever 1 on either the front or rear side
3, the main clutch 8 can be engaged and operated.

又、操作レバー１３を前記第１，第２操作経路
S1，S2夫々の外端部Ｆ，Ｒに操作することで、機
体が前進、後進するようにも構成してある。 Further, the operating lever 13 is connected to the first and second operating paths.
The aircraft is also configured to move forward or backward by operating the outer ends F and R of S 1 and S 2 , respectively.

つまり、第１図乃至第５図に示すように、前記
ハンドル杆９に取付けたケーシング１４に設けた
左右向き軸１５に対し、筒軸１６を回動可能に外
嵌すると共に、この筒軸１６に設けたピン１７に
対し、更に揺動可能に、前記操作レバー１の下端
部を取付け、操作レバー１３を前記操作経路Ｓに
沿せて揺動操作できる構造に設ける。 That is, as shown in FIGS. 1 to 5, a cylindrical shaft 16 is rotatably fitted onto the left-right shaft 15 provided in the casing 14 attached to the handle rod 9, and this cylindrical shaft 16 The lower end of the operating lever 1 is attached to a pin 17 provided in the holder so as to be swingable, and the operating lever 13 is provided in a structure that allows the operating lever 13 to swing along the operating path S.

前記主クラツチ８はバネ（図示せず）で切り付
勢されると共に、操作レバー１３の基端部に設け
たカム機構Ｂとワイヤ１８を介して連結してあ
る。説明すると、カム機構Ｂは、その前後両端部
夫々にローラ１９ａ，１９ｂを支承すると共に、
前記筒軸１６に取付けたプレート２０、前記ロー
ラ１９ａ，１９ｂが接当するカム面２１ｓを、そ
の上面に形成すると共に、前記ケーシング１４に
対し左右向き軸心Ｐで枢着したカム２１、カム２
１と共に揺動可能なアーム２２で構成され、この
アーム２２に対し、主クラツチ８を操作する前記
ワイヤ１８の端部を取付けてある。 The main clutch 8 is biased by a spring (not shown) and is connected to a cam mechanism B provided at the base end of the operating lever 13 via a wire 18. To explain, the cam mechanism B supports rollers 19a and 19b at both its front and rear ends, respectively, and
A plate 20 attached to the cylinder shaft 16 and a cam surface 21s on which the rollers 19a and 19b come into contact are formed on the upper surface thereof, and a cam 21 and a cam 2 are pivotally connected to the casing 14 with a left-right axis P.
1 and a swingable arm 22 to which the end of the wire 18 for operating the main clutch 8 is attached.

又、前記カム面２１ｓには、操作レバー１３を
前記操作位置Ｆ，Ｒ夫々に操作した場合に、操作
レバー１３の操作位置を保持するため、前記ロー
ラ１９ａ，１９ｂが夫々係入できる２つの凹部２
１ａ，２１ｂを形成してあり、又、操作レバー１
３を中間操作位置Ｎから前後夫々に揺動させる
際、つまり、第１操作経路S1、第２操作経路S2に
向けて操作する際に後方への揺動時の操作反力が
前方への揺動時の操作反力より大きくなるよう、
ローラ１９ａ，１９ｂとカム面２１ｓとの接当位
置をカム２１の揺動中心Ｐに対し比較的大きな差
を持たせてある。 Further, the cam surface 21s has two recesses into which the rollers 19a and 19b can engage, respectively, in order to maintain the operating position of the operating lever 13 when the operating lever 13 is operated to the operating positions F and R, respectively. 2
1a and 21b, and the operating lever 1
3 from the intermediate operating position N to the front and back, that is, when operating toward the first operating path S 1 and the second operating path S 2 , the operating reaction force when swinging backward is directed forward. so that it is larger than the operational reaction force during rocking.
The contact positions of the rollers 19a, 19b and the cam surface 21s are made to have a relatively large difference with respect to the swing center P of the cam 21.

尚、操作レバー１３に与えられる操作反力は、
主クラツチ８を入り操作する際の操作抵抗に起因
している。 Note that the operation reaction force applied to the operation lever 13 is
This is due to the operational resistance when the main clutch 8 is engaged.

又、第６図に示すように、前記ミツシヨンケー
ス７の走行駆動系は、その外端にプーリ２３を取
付けた入力軸２４、この入力軸２４に遊嵌するギ
ヤ群２５、同様に入力軸２４に遊嵌するギヤ２
６、入力軸２４にスプラインを介して外嵌すると
共に、前記ギヤ群２５及びギヤ２６の側部に夫々
択一的に咬合することで、駆動力を伝える咬合ク
ラツチ２７、前記入力軸２４と並設した伝動軸２
８、この伝動軸２８に対してスプラインを介して
シフト可能に外嵌した２つのギヤ群２９，３０、
伝動軸２８の端部に設けた出力ギヤ３１、伝動軸
２８と並設すると共にスプロケツト３２ａを一体
形成した軸３２、この軸３２の端部に設けると共
に、前記出力ギヤ３１及び、ギヤ２６と咬合する
入力ギヤ３３、及びスプロケツト３２ａに巻回し
た無端チエーン３４と連動連結する操向クラツチ
（図外）で構成してあり、前記２つのギヤ群２９，
３０を第８図に示す主変速レバー１３で操作する
ことで前進走行速度を４速に設定できる。因みに
操向クラツチは前記操向クラツチレバー１２，１
２で操作できるよう連係されている。 As shown in FIG. 6, the traveling drive system of the transmission case 7 includes an input shaft 24 having a pulley 23 attached to its outer end, a gear group 25 loosely fitted to the input shaft 24, and a gear group 25 that is loosely fitted to the input shaft 24. Gear 2 that loosely fits into 24
6. An engagement clutch 27 that is externally fitted onto the input shaft 24 via a spline and selectively engages the sides of the gear group 25 and the gear 26 to transmit driving force, which is parallel to the input shaft 24. installed transmission shaft 2
8. Two gear groups 29 and 30 fitted externally to the transmission shaft 28 via splines so as to be shiftable;
An output gear 31 provided at the end of the transmission shaft 28, a shaft 32 arranged in parallel with the transmission shaft 28 and integrally formed with a sprocket 32a, and an output gear 31 provided at the end of the shaft 32 and interlocked with the output gear 31 and the gear 26. The input gear 33 and the steering clutch (not shown) are connected in conjunction with an endless chain 34 wound around a sprocket 32a, and the two gear groups 29,
By operating 30 with the main shift lever 13 shown in FIG. 8, the forward traveling speed can be set to 4th speed. Incidentally, the steering clutch is connected to the steering clutch lever 12,1.
It is linked so that it can be operated with 2.

第２図に示すように、前記操作レバー１３が前
記中間操作位置Ｎからら第２操作経路S2側に移行
するとき、接当移動される可動部材３５を、前記
ケーシング１４に対し上下方向に設けた軸３６に
遊転支承する筒軸３７に取付け、更にこの筒軸３
７に揺動アーム３８を取付けてある。 As shown in FIG. 2, when the operating lever 13 moves from the intermediate operating position N to the second operating path S2 , the movable member 35 that is moved into contact with the casing 14 is moved vertically relative to the casing 14. It is attached to a cylindrical shaft 37 which is rotatably supported by the provided shaft 36, and further this cylindrical shaft 3
A swing arm 38 is attached to 7.

又、前記咬合クラツチ２７をシフタ３９でシフ
ト操作可能に構成すると共に、このシフタ３９に
操作軸４０のケース外端部に設けたアーム４０ａ
に対し、咬合クラツチ２７を前記ギヤ群２５に咬
合させるバネ４１を設け、かつ、このアーム４０
ａと前記揺動アーム３８とをワイヤ４２及びバネ
４３を介して連結し、操作レバー１３を第３図に
示す機体後進位置Ｒに操作することで咬合クラツ
チ２７がギヤ２６と咬合する位置R′に操作され、
操作レバー１３を位置Ｒ以外に操作することで咬
合クラツチ２７がギヤ群２６と咬合する位置Ｆに
操作されるように構成する。そして、前記可動部
材３５と連動連結する、これらワイヤ４２から咬
合クラツチ２７までの操作系を前後進切換え機構
Ｃと称する。 Further, the occlusal clutch 27 is configured to be shiftable by a shifter 39, and the shifter 39 has an arm 40a provided at the outer end of the case of the operation shaft 40.
A spring 41 is provided for causing the occlusal clutch 27 to engage the gear group 25, and this arm 40
a and the swinging arm 38 are connected via a wire 42 and a spring 43, and the operating lever 13 is operated to the aircraft backward movement position R shown in FIG. operated by,
The configuration is such that by operating the operating lever 13 to a position other than position R, the engagement clutch 27 is operated to a position F where it engages with the gear group 26. The operating system from the wire 42 to the occlusal clutch 27, which is interlocked with the movable member 35, is referred to as a forward/reverse switching mechanism C.

尚、前記主変速レバー１１をどの変速位置に設
定した状態であつても、、操作レバー１３を機体
後進位置Ｒに操作すると機体は一定の速度で後進
し、又、前記主変速レバー１１を中立位置に設定
しておくと、操作レバー１３を機体前進位置Ｆに
操作しても機体は前進せず主クラツチ８のみが入
り状態になる。 Incidentally, no matter which gear shift position the main gear shift lever 11 is set, when the control lever 13 is operated to the aircraft reverse position R, the aircraft moves backward at a constant speed, and the main gear shift lever 11 is set to the neutral position. If this position is set, even if the operating lever 13 is operated to the fuselage forward position F, the fuselage will not move forward and only the main clutch 8 will be in the engaged state.

そして、第３図に示すように、操作レバー１３
を機体後進位置Ｒに操作すると、前記可動部材３
５からら操作レバー１３に加わる前記アーム４０
ａに設けたバネ４１起因する付勢力が第２操作経
路S2に直交する方向から加わり、この付勢力で操
作レバー１３を中間操作位置Ｎに復帰させないよ
うになつている。 Then, as shown in FIG. 3, the operating lever 13
When the movable member 3 is operated to the aircraft reverse position R, the movable member 3
The arm 40 is applied to the operating lever 13 from 5
A biasing force caused by a spring 41 provided at a is applied from a direction perpendicular to the second operating path S2 , and this biasing force prevents the operating lever 13 from returning to the intermediate operating position N.

〔別実施例〕[Another example]

本考案は、前記実施例以外に、例えば、カム面
を有するカムを操作アームの下端に取付け、か
つ、ローラ等の接当部を有するプレートを揺動可
能に、ケーシングに取付けてカム機構を構成して
も良い。又、主クラツチはベルトテンシヨン式以
外に、摩擦板式あるいは咬合式に構成しても良
い。 In addition to the above-mentioned embodiments, the present invention also provides a cam mechanism in which, for example, a cam having a cam surface is attached to the lower end of the operating arm, and a plate having a contact portion such as a roller is attached to the casing so as to be swingable. You may do so. In addition to the belt tension type, the main clutch may also be configured as a friction plate type or an interlocking type.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案に係る歩行型作業機の前後進切換
え操作構造の実施例を示し、第１図は操作レバ
ー、カム機構等を示す縦断側面図、第２図は操作
レバーの操作経路及び前後進切換え構造等を示す
横断平面図、第３図は操作レバーを機体後進側に
操作した状態での操作レバー等の横断平面図、第
４図は第３図の−線断面図、第５図は第４図
の−線断面図。第６図はミツシヨンケースの
断面、及び前後進切換え構造を示す図、第７図は
バインダーの全体側面図、第８図はバインダーの
後部の平面図である。 ８…主クラツチ、１３…操作レバー、Ｂ…カム
機構、Ｃ…前後進切換え機構、Ｎ…前後中間操作
位置、Ｓ…操作経路、S1…第１操作経路、S2…第
２操作経路、S3…横向き経路。 The drawings show an embodiment of the operating structure for switching forward/backward movement of a walk-behind work machine according to the present invention. Fig. 1 is a longitudinal side view showing the operating lever, cam mechanism, etc., and Fig. 2 is an operating path of the operating lever and the forward/reverse switching operation structure. FIG. 3 is a cross-sectional plan view showing the switching structure, etc., FIG. 3 is a cross-sectional plan view of the operating lever etc. when the operating lever is operated to the reverse side of the aircraft, FIG. 4 is a sectional view taken along the - line in FIG. 3, and FIG. FIG. 4 is a sectional view taken along the - line in FIG. 4. FIG. 6 is a cross-sectional view of the transmission case and a forward/backward switching structure, FIG. 7 is an overall side view of the binder, and FIG. 8 is a plan view of the rear part of the binder. 8... Main clutch, 13... Operating lever, B... Cam mechanism, C... Forward/forward switching mechanism, N... Front/rear intermediate operating position, S... Operating path, S 1 ... First operating path, S 2 ... Second operating path, S 3 ...Sideways path.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 操作レバー１３の操作経路Ｓを、前後中間操作
位置Ｎより前方へ向かう第１操作経路S1と、中間
操作位置Ｎより後方へ向かう第２操作経路S2と、
中間操作位置Ｎにおいて両経路S1，S2をつなぐ横
向き経路S3とからなる段違状に形成し、前記横向
き経路S3での第１操作経路S1側への操作で前進状
態が、第２操作経路S2側への操作で後進状態が
夫々もたらされるように操作レバー１３と前後進
切換え機構Ｃとを連動連結するとともに、操作レ
バー１３の中間操作位置Ｎで主クラツチ８が切り
操作され、中間操作位置Ｎから前方及び後方への
いづれの操作によつても主クラツチ８が入り操作
されるように、操作レバー１３と切り付勢された
主クラツチ８とをカム機構Ｂを介して連動連結
し、かつ、カム機構Ｂを介して操作レバー１３に
与えられる主クラツチ操作反力が第１操作経路S1
より第２操作経路S2で大きく働くよう前記カム機
構Ｂを構成してある歩行型作業機の前後進切換え
操作構造。 The operating path S of the operating lever 13 is a first operating path S1 that goes forward from the front-rear intermediate operating position N, and a second operating path S2 that goes rearward from the intermediate operating position N.
The intermediate operating position N is formed in a step-like shape consisting of a horizontal route S3 connecting both routes S1 and S2 , and the forward state is changed by operating the horizontal route S3 toward the first operating route S1 . The operating lever 13 and the forward/reverse switching mechanism C are interlocked and connected so that an operation toward the second operating path S 2 brings about the reverse state, and the main clutch 8 is operated to disengage at the intermediate operating position N of the operating lever 13. The operating lever 13 and the biased main clutch 8 are connected via a cam mechanism B so that the main clutch 8 is engaged and operated by either forward or backward operation from the intermediate operating position N. The main clutch operation reaction force that is interlocked and applied to the operation lever 13 via the cam mechanism B is the first operation path S 1
A forward/reverse switching operation structure for a walk-behind work machine, in which the cam mechanism B is configured to work more strongly on the second operation path S2 .
JP1985018937U 1985-02-12 1985-02-12 Expired JPH035707Y2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1985018937U JPH035707Y2 (en) 1985-02-12 1985-02-12
KR2019860001355U KR920003662Y1 (en) 1985-02-12 1986-02-07 Forward and backward change operating structure of working vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985018937U JPH035707Y2 (en) 1985-02-12 1985-02-12

Publications (2)

Publication Number Publication Date
JPS61138025U JPS61138025U (en) 1986-08-27
JPH035707Y2 true JPH035707Y2 (en) 1991-02-14

Family

ID=11985555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985018937U Expired JPH035707Y2 (en) 1985-02-12 1985-02-12

Country Status (2)

Country Link
JP (1) JPH035707Y2 (en)
KR (1) KR920003662Y1 (en)

Also Published As

Publication number Publication date
JPS61138025U (en) 1986-08-27
KR920003662Y1 (en) 1992-06-08
KR860010637U (en) 1986-09-08

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