JPH04314625A - Speed change operation structure of working vehicle - Google Patents

Speed change operation structure of working vehicle

Info

Publication number
JPH04314625A
JPH04314625A JP7877391A JP7877391A JPH04314625A JP H04314625 A JPH04314625 A JP H04314625A JP 7877391 A JP7877391 A JP 7877391A JP 7877391 A JP7877391 A JP 7877391A JP H04314625 A JPH04314625 A JP H04314625A
Authority
JP
Japan
Prior art keywords
speed change
shift lever
lever
shift
reverse
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.)
Pending
Application number
JP7877391A
Other languages
Japanese (ja)
Inventor
Tokuzo Saida
最田 徳三
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP7877391A priority Critical patent/JPH04314625A/en
Publication of JPH04314625A publication Critical patent/JPH04314625A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

PURPOSE:To simplify the structure of a linkage system near a speed change lever and the linking structure between the speed change lever and a continuously variable transmission in a speed change operation structure for working vehicle having such a constitution as operating the running continuously variable transmission and a forward/reverse switching device by one longitudinally and laterally operable lever. CONSTITUTION:A switching member 3 which laterally oscillates interlockingly, when a speed change lever 1 is operated laterally, and switches a forward/reverse switching device 5 on forward side or reverse side is provided, and the switching member 3 has a flexible part 3a allowing the switching member 3 to conduct the forward operation on the forward side of the speed change lever 1 and the backward operation on the reverse side. The speed change lever 1 has a first operation part 18 situated in the rear of the support point P1 of the speed change lever 1 and a second operation part 19 situated in the front, so that, when the speed change lever 1 is fallen forward on the forward side, a speed change operation member 13 for a continuously variable transmission 11 can be pushed on high speed side by one of the first and second operation parts 18, 19, and when the speed change lever 1 is fallen backward on the reverse side, the speed change operation member 13 can be pushed on high speed side by the other of the first and second operation members 18, 19.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、走行用の無段変速装置
と前後進切換装置とを備えた作業車の変速操作構造に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift operation structure for a working vehicle equipped with a continuously variable transmission for traveling and a forward/reverse switching device.

【0002】0002

【従来の技術】農用トラクタや歩行型のバインダー等の
作業車においては、1本の変速レバーにて走行用の無段
変速装置と前後進切換装置とを同時に操作できるように
構成しているものがあり、その構造として次のようなも
のがある。つまり、左右一対の第1操作アームと第2操
作アームとを変速レバーを間に挟んで対向配置し、変速
レバーを左右に操作すると、この変速レバーが第1又は
第2操作アームに係合可能、且つ、前後進切換装置が前
進側又は後進側に切り換え操作されるように連係する。 そして、無段変速装置と第1操作アームとを第1連係機
構により連動連結すると共に、この無段変速装置と第2
操作アームとを別の第2連係機構により連動連結した構
造である。以上の構造により、変速レバーを左右に操作
して例えば第1操作アームに係合させると前後進切換装
置が前進側に操作されるのであり、この状態で例えば変
速レバーを前方に操作していくと、第1操作アームが一
緒に操作されて無段変速装置が高速側に操作されて行く
のである。
[Prior Art] Work vehicles such as agricultural tractors and walk-behind binders are constructed so that a continuously variable transmission for traveling and a forward/reverse switching device can be operated simultaneously with a single gear shift lever. There is a structure as follows. In other words, a pair of left and right first operating arms and a second operating arm are arranged facing each other with a gear shift lever in between, and when the gear shift lever is operated left or right, this gear shift lever can engage with the first or second operating arm. , and the forward/reverse switching device is linked to be switched to the forward or reverse side. Then, the continuously variable transmission and the first operating arm are interlocked and connected by the first linking mechanism, and the continuously variable transmission and the second operating arm are interlocked.
It has a structure in which the operation arm is interlocked and connected by a separate second linkage mechanism. With the above structure, when the gear shift lever is operated left or right and engaged with the first operating arm, for example, the forward/reverse switching device is operated in the forward direction, and in this state, for example, the gear shift lever is operated forward. Then, the first operating arm is operated together, and the continuously variable transmission is operated to the high speed side.

【0003】0003

【発明が解決しようとする課題】前述の構造では第1操
作アームが前進時の変速用に用いられており、第2操作
アームが後進時の変速用に用いられる。従って、第1操
作アームと無段変速装置との間に設けられている第1連
係機構と同様の第2連係機構が、第2操作アームと無段
変速装置との間にも設けられることになる。このように
、前進用及び後進用の2組の第1及び第2連係機構が備
えられている為に、構造の簡素化と言う面で改良の余地
があった。本発明は、以上のような走行用の無段変速装
置と前後進切換装置とを1本の変速レバーにて操作する
構造の簡素化を図ることを目的としている。
In the above-described structure, the first operating arm is used for shifting gears when moving forward, and the second operating arm is used for shifting gears when moving backwards. Therefore, a second linking mechanism similar to the first linking mechanism provided between the first operating arm and the continuously variable transmission is also provided between the second operating arm and the continuously variable transmission. Become. As described above, since two sets of first and second linking mechanisms are provided, one for forward movement and one for reverse movement, there is room for improvement in terms of structural simplification. An object of the present invention is to simplify the structure in which the continuously variable transmission for traveling and the forward/reverse switching device as described above are operated by a single shift lever.

【0004】0004

【課題を解決するための手段】本発明の特徴は以上のよ
うな作業車の変速操作構造において、次のように構成す
ることにある。つまり、 〔1〕機体の前後方向及び左右方向に揺動操作自在な変
速レバーを備えて、走行用の無段変速装置の中立位置に
て変速レバーを左右に操作するとこの変速レバーに係合
して左右に揺動し前後進切換装置を前進側又は後進側に
切換操作する切換部材を設け、この切換部材に変速レバ
ーの前進側の前方への操作及び後進側の後方への操作を
許す融通部を設けると共に、変速レバーの支点より後方
に位置する第1操作部及び支点より前方に位置する第2
操作部を変速レバーに設け、無段変速装置と連係機構を
介して連動連結された変速操作部材を変速レバーの横側
近傍に上下揺動自在に支持して、変速レバーを前進側の
前方に倒し操作すると第1及び第2操作部のうちの一方
にて変速操作部材を高速側に押し操作可能に、且つ、変
速レバーを後進側の後方に倒し操作すると第1及び第2
操作部のうちの他方にて変速操作部材を高速側に押し操
作可能に構成している。
[Means for Solving the Problems] The feature of the present invention is that the shift operation structure for a work vehicle as described above is configured as follows. In other words, [1] The aircraft is equipped with a gear shift lever that can be freely swung in the longitudinal and lateral directions of the aircraft, and when the gear lever is operated from side to side when the continuously variable transmission for traveling is in the neutral position, the gear lever is engaged. A switching member is provided that swings from side to side to operate the forward/reverse switching device to the forward or reverse side, and this switching member has flexibility to allow forward operation of the gear shift lever on the forward side and backward operation on the reverse side. a first operation part located behind the fulcrum of the gear shift lever and a second operation part located in front of the fulcrum of the shift lever.
An operation part is provided on the gear shift lever, and a gear shift operating member that is interlocked and connected to the continuously variable transmission via a linkage mechanism is supported near the side of the gear lever so as to be able to swing up and down, so that the gear lever is moved forward in the forward direction. When the shift lever is tilted down, one of the first and second operating sections can be operated to push the shift operating member toward the high speed side, and when the shift lever is tilted backward toward the reverse side, the first and second operating sections can be operated.
The other of the operating parts is configured to be operable to push the speed change operating member toward the high speed side.

【0005】〔2〕前項〔1〕の構成において、変速操
作部材の揺動支点を変速レバーの支点よりも前方に位置
させ、この変速操作部材を後方に延出させて、変速レバ
ーの第1操作部にて変速操作部材における揺動支点から
遠い部分を高速側に押し操作するように、且つ、変速レ
バーの第2操作部にて変速操作部材における揺動支点に
近い部分を高速側に押し操作するように構成している。
[2] In the configuration of the previous item [1], the swinging fulcrum of the shift operating member is located in front of the fulcrum of the shift lever, and this shift operating member is extended rearward, so that the first shift lever The operation part pushes the part of the shift operation member far from the swing fulcrum toward the high speed side, and the second operation part of the shift lever pushes the part of the shift operation member close to the swing fulcrum toward the high speed side. configured to operate.

【0006】[0006]

【作用】前項〔1〕のように構成すると、例えば図1及
び図2に示すように変速レバー1を中立位置にて左に操
作すると、切換部材3が揺動して前後進切換装置が前進
側に操作されるとする。この状態から変速レバー1を前
進の高速側(図1の紙面上方側)に操作して行くと、図
2に示すように第1操作部18により走行用の無段変速
装置の変速操作部材13が高速側に押し操作されて行く
。逆に、変速レバー1を中立位置にて右に操作すると、
切換部材3が揺動して前後進切換装置が後進側に操作さ
れる。この状態から変速レバー1を後進の高速側(図1
の紙面下方側)に操作して行くと、図2に示すように第
2操作部19により変速操作部材13が高速側に押し操
作されて行くのである。以上のように、前進の操作時で
も後進の操作時でも、変速操作部材に連結されている1
組の連係機構により、走行用の無段変速装置の操作が行
えるのである。そして、前後進切換用として1組の切換
部材を備えているだけであり、且つ、走行変速用として
1組の変速操作部材を備えているだけであると共に、こ
の切換部材及び変速操作部材が支持構造の簡単な揺動式
であるので、変速レバー付近の前後進切換及び走行変速
の連係系をコンパクトにまとめることができる。
[Operation] With the configuration as described in the previous item [1], for example, as shown in FIGS. 1 and 2, when the gear shift lever 1 is operated to the left from the neutral position, the switching member 3 swings and the forward/reverse switching device moves forward. Suppose that it is operated by the side. When the shift lever 1 is operated from this state to the forward high-speed side (upper side of the page in FIG. 1), the first operating section 18 operates the shift operating member 13 of the continuously variable transmission for traveling, as shown in FIG. is pushed to the high speed side. Conversely, if you operate shift lever 1 to the right from the neutral position,
The switching member 3 swings and the forward/reverse switching device is operated to the reverse side. From this state, move the gear shift lever 1 to the reverse high speed side (Figure 1
2), the second operating section 19 pushes the speed change operating member 13 toward the high speed side, as shown in FIG. As mentioned above, whether it is a forward operation or a reverse operation, the one connected to the shift operation member is
A set of linkage mechanisms allows the operation of the continuously variable transmission for driving. It is provided with only one set of switching members for forward/reverse switching, and only one set of shift operating members for travel shifting, and this switching member and shift operating member are not supported. Since it is a swing type with a simple structure, the linkage system for forward/reverse switching and traveling gear change near the gear shift lever can be compactly integrated.

【0007】前項〔2〕のように構成すると、例えば図
1及び図2に示すように変速レバー1を前進の高速側(
図1の紙面上方側)に操作して行くと、第1操作部18
により変速操作部材13における揺動支点P4から遠い
部分が高速側に押し操作されて行く。つまり変速レバー
の操作量の割りには、変速操作部材があまり高速側には
操作されないような状態となる。これにより、前進側に
おいて変速レバーにより微妙な変速操作が可能になる。 逆に、変速レバー1を後進の高速側(図1の紙面下方側
)に操作して行くと、第2操作部19により変速操作部
材13における揺動支点P4に近い部分が高速側に押し
操作されて行く。つまり変速レバーの操作量の割りには
、変速操作部材が大きく高速側に操作されるような状態
となる。作業車においては後進側の変速レバーの操作ス
トロークを僅かなものにしてしまい、後進時には変速レ
バーを後進側のストロークエンドにまで操作してしまっ
て一定速度にて後進するように設定してしまう場合があ
る。このような場合、前項〔2〕のように構成すると後
進側での一定の速度を現出し易くなるのである。
[0007] When configured as in the previous item [2], the shift lever 1 is moved to the forward high-speed side (as shown in FIGS. 1 and 2).
1), the first operation section 18
As a result, the portion of the shift operation member 13 that is far from the swing fulcrum P4 is pushed toward the high speed side. In other words, the shift operating member is not operated to the high speed side much compared to the amount of operation of the shift lever. This allows delicate gear shifting operations using the gear lever on the forward side. Conversely, when the gear shift lever 1 is operated to the high speed side for reverse movement (downward side in the paper plane of FIG. 1), the second operating portion 19 pushes the portion of the gear shift operating member 13 near the rocking fulcrum P4 toward the high speed side. I'm going to be done. In other words, the shift operation member is operated to the high speed side by a large amount in comparison to the amount of operation of the shift lever. In a work vehicle, the operating stroke of the reverse gear lever is small, and when reversing, the gear lever is operated to the end of the reverse stroke and the vehicle is set to move backward at a constant speed. There is. In such a case, the configuration as described in item [2] above makes it easier to achieve a constant speed on the reverse side.

【0008】[0008]

【発明の効果】請求項1のように構成した場合には、1
本の変速レバーにて走行用の無段変速装置及び前後進切
換装置を操作するものにおいて、この無段変速装置用の
連係機構を従来2組であったものを1組でよいように構
成することができ、且つ、変速レバー付近の連係系をコ
ンパクトにまとめることができるので、全体として構造
の簡素化を図ることがでる。請求項2のように構成した
場合には、前進側での微妙な変速操作及び後進側での一
定速度の確実な現出が行えるようになり、走行変速操作
の操作性の向上を図ることができる。
Effect of the invention: When configured as claimed in claim 1, 1
In a device in which a continuously variable transmission for driving and a forward/reverse switching device are operated by a main shift lever, the linkage mechanism for the continuously variable transmission is configured so that only one set is required instead of two sets in the past. In addition, the linkage system near the speed change lever can be made compact, so the structure as a whole can be simplified. When configured as claimed in claim 2, it becomes possible to perform delicate gear shifting operations on the forward side and to ensure a constant speed on the reverse side, thereby improving the operability of the traveling gear shifting operation. can.

【0009】[0009]

【実施例】以下、本発明の実施例を図面に基づいて説明
する。図1及び図2は作業車の一例である歩行型のバイ
ンダーの変速レバー1付近の構造を示しており、機体左
右方向の横軸芯P1周りに支持軸2が回動自在に支持さ
れると共に、この支持軸2におけるブラケット2aの機
体前後方向の横軸芯P2周りに変速レバー1が揺動操作
自在に支持されている。以上の構造により、変速レバー
1が前後左右に操作可能となっている。
Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. Figures 1 and 2 show the structure of a walk-behind binder, which is an example of a working vehicle, near a gear shift lever 1, in which a support shaft 2 is rotatably supported around a horizontal axis P1 in the left-right direction of the machine. A gear shift lever 1 is swingably supported around a transverse axis P2 of a bracket 2a on this support shaft 2 in the longitudinal direction of the machine body. With the above structure, the gear shift lever 1 can be operated forward, backward, left, and right.

【0010】次に、変速レバー1と前後進切換装置5と
の連係構造について説明する。変速レバー1の前方の縦
軸芯P3周りに揺動自在に切換部材3が支持されており
、この切換部材3に開口された長孔3a(融通部に相当
)に変速レバー1が挿入されている。そして、切換部材
3に固定されたアーム4と前後進切換装置5の操作部5
aとが、連係ロッド6、連動軸7、連係ロッド8及び融
通機構9を介して連動連結されている。前後進切換装置
5はシフト部材(図示せず)を操作部5aによりスライ
ド操作し、前進用ギヤ(図示せず)又は後進用ギヤ(図
示せず)に咬合させることで、前後進の切換操作を行う
ように構成されている。
Next, the linkage structure between the gear shift lever 1 and the forward/reverse switching device 5 will be explained. A switching member 3 is swingably supported around a vertical axis P3 in front of the shift lever 1, and the shift lever 1 is inserted into a long hole 3a (corresponding to a flexible portion) opened in the switching member 3. There is. The arm 4 fixed to the switching member 3 and the operating section 5 of the forward/reverse switching device 5
a are interlocked and connected via a linking rod 6, a linking shaft 7, a linking rod 8, and a flexibility mechanism 9. The forward/reverse switching device 5 performs a forward/reverse switching operation by sliding a shift member (not shown) using the operating portion 5a and engaging a forward gear (not shown) or a reverse gear (not shown). is configured to do so.

【0011】以上の構造によって、変速レバー1を図1
に示す位置(後述する走行用の無段変速装置11の中立
位置Nに相当)からレバーガイド10に沿って機体左右
方向に操作すると、この操作に基づき切換部材3が揺動
操作されて前後進切換装置5の操作部5aが前進位置F
又は後進位置Rに操作されるのである。
With the above structure, the gear shift lever 1 can be configured as shown in FIG.
When operated in the left-right direction of the aircraft along the lever guide 10 from the position shown in (corresponding to the neutral position N of the continuously variable transmission 11 for traveling described later), the switching member 3 is swung based on this operation and the switching member 3 is operated to move forward or backward. The operating section 5a of the switching device 5 is in the forward position F.
Or it is operated to the reverse position R.

【0012】又、融通機構9は外側の円筒部9aとバネ
9bとで構成されており、連係ロッド8が前進位置F側
又は後進位置R側に操作された際に、前後進切換装置5
内のシフト部材と前進用ギヤ又は後進用ギヤとの位相が
合わない場合に、バネ9bが収縮して連係ロッド8の動
作を吸収する。そして、前述の位相が合うと収縮してい
たバネ9bの付勢力で操作部5aが前進位置F又は後進
位置Rに操作されるのである。又、前後進切換装置5の
操作部5aにはこれを前進位置F、後進位置R及び中立
位置Nにて保持する揺動式のデテントアーム12が設け
られている。
The flexibility mechanism 9 is composed of an outer cylindrical portion 9a and a spring 9b, and when the linking rod 8 is operated to the forward position F side or the reverse position R side, the forward/reverse switching device 5
When the shift member inside the gear and the forward gear or reverse gear are out of phase, the spring 9b contracts and absorbs the movement of the link rod 8. When the aforementioned phases match, the operating portion 5a is operated to the forward position F or the reverse position R by the biasing force of the spring 9b, which has been contracted. Further, the operating portion 5a of the forward/reverse switching device 5 is provided with a swing type detent arm 12 that holds the operating portion 5a at a forward position F, a reverse position R, and a neutral position N.

【0013】次に、変速レバー1と走行用の無段変速装
置11との連係構造について説明する。図1及び図2に
示すように、変速レバー1の前側の横軸芯P4(揺動支
点に相当)周りに、上下揺動自在に側面視L字状の変速
操作部材13が支持されており、無段変速装置11の操
作部11aと変速操作部材13とが連係ロッド14(連
係機構に相当)、連動軸7に相対回転自在に外嵌された
円筒軸15(連係機構に相当)及び連係ロッド16(連
係機構に相当)を介して連動連結されている。この無段
変速装置11はテーパーコーンを用いた無段変速型式で
あり、中立の停止状態から高速側に滑らかに増速操作す
ることが可能である。
[0013] Next, a linkage structure between the speed change lever 1 and the continuously variable transmission device 11 for traveling will be explained. As shown in FIGS. 1 and 2, a shift operation member 13 having an L-shape in side view is supported around a horizontal axis P4 (corresponding to a swing fulcrum) on the front side of the shift lever 1 so as to be able to swing up and down. , the operation part 11a of the continuously variable transmission 11 and the speed change operation member 13 are connected to a linkage rod 14 (corresponding to a linkage mechanism), a cylindrical shaft 15 (corresponding to a linkage mechanism) externally fitted on the linkage shaft 7 so as to be relatively rotatable, and a linkage rod 14 (corresponding to a linkage mechanism). They are interlocked and connected via a rod 16 (corresponding to a linkage mechanism). This continuously variable transmission 11 is of a continuously variable type using a tapered cone, and is capable of smoothly increasing speed from a neutral stopped state to a high speed side.

【0014】これに対して、変速レバー1の支持軸2に
は横軸芯P1(変速レバー1の支点に相当)から、機体
前方側(図1において紙面上方側)及び機体後方側(図
1において紙面下方側)の両方に延びる操作アーム17
が固定されており、その前後両端に第1ローラー18(
第1操作部に相当)及び第2ローラー19(第2操作部
に相当)が取り付けられている。この場合、横軸芯P1
から第1ローラー18までの長さが横軸芯P1から第2
ローラー19までの長さよりも少し長くなるように設定
されている。そして、変速操作部材13が第1及び第2
ローラー18,19の上側に当て付けられており、変速
操作部材13及び無段変速装置11の操作部11aが中
立位置N側に付勢されている(変速操作部材13におい
ては図2において紙面下方側に付勢されることになる)
On the other hand, the support shaft 2 of the gear shift lever 1 has two directions from the horizontal axis P1 (corresponding to the fulcrum of the gear shift lever 1) to the front side of the fuselage (upper side in FIG. 1) and the rear side of the fuselage (upper side in FIG. 1). The operation arm 17 extends to both sides (downward side in the paper).
is fixed, and the first roller 18 (
A second roller 19 (corresponding to the first operating section) and a second roller 19 (corresponding to the second operating section) are attached. In this case, the horizontal axis P1
The length from the horizontal axis P1 to the first roller 18 is the length from the horizontal axis P1 to the second roller 18.
The length is set to be slightly longer than the length up to the roller 19. Then, the speed change operation member 13 is connected to the first and second
The shift operating member 13 and the operating section 11a of the continuously variable transmission 11 are urged toward the neutral position N (the shift operating member 13 is pressed against the upper side of the rollers 18 and 19 in the lower part of the page in FIG. (will be biased toward the side)
.

【0015】変速レバー1を図1及び図2に示す位置に
操作していると、無段変速装置11の操作部11aは中
立位置Nに位置しており、図1の状態から変速レバー1
を紙面左方に操作すると前述のように前後進切換装置5
が前進位置Fに操作される。この場合レバーガイド10
の前進側(紙面上側)と切換部材3の長孔3aの前進側
とが一致するように設定されている。この状態で変速レ
バー1を前進側(図1の紙面上方側)に操作して行くと
、図2に示すように第1ローラー18により変速操作部
材13における横軸芯P4から遠い部分が上方に押し上
げられて行き、無段変速装置11の操作部11aが高速
側Hに操作されて行く。
When the shift lever 1 is operated to the position shown in FIGS. 1 and 2, the operating portion 11a of the continuously variable transmission 11 is located at the neutral position N, and the shift lever 1 is moved from the state shown in FIG.
When operated to the left in the paper, the forward/reverse switching device 5 is activated as described above.
is operated to the forward position F. In this case, lever guide 10
The forward side of the switching member 3 (upper side in the drawing) is set so that the forward side of the elongated hole 3a of the switching member 3 coincides with the forward side of the elongated hole 3a. In this state, when the shift lever 1 is operated toward the forward side (upward side in the paper plane of FIG. 1), the portion of the shift operating member 13 far from the horizontal axis P4 is moved upward by the first roller 18, as shown in FIG. The vehicle is pushed upward, and the operating portion 11a of the continuously variable transmission 11 is operated to the high speed side H.

【0016】逆に、図1の状態から変速レバー1を紙面
右方に操作すると前述のように前後進切換装置5が後進
位置Rに操作される。この場合、レバーガイド10の後
進側(紙面下側)と切換部材3の長孔3aの後進側とが
一致するように設定されている。この状態で変速レバー
1を後進側(図1の紙面下方側)の端部にまで操作する
と、図2に示すように第2ローラー19により変速操作
部材13における横軸芯P4に近い部分が上方に押し上
げられて、無段変速装置11の操作部11aが所定の高
速位置に操作されるのである。後進側においてはレバー
ガイド10の長さを短く設定しており、変速レバー1を
後進側に操作する場合にはレバーガイド10の後進側の
端部にまで操作しないと、実質的には後進しないように
なっている。これにより、後進は常に一定の速度にて行
われるのである。
On the other hand, when the shift lever 1 is operated to the right in the drawing from the state shown in FIG. 1, the forward/reverse switching device 5 is operated to the reverse position R as described above. In this case, the reverse side of the lever guide 10 (bottom side in the drawing) is set so as to match the backward side of the elongated hole 3a of the switching member 3. In this state, when the shift lever 1 is operated to the end on the reverse side (lower side in the paper plane of FIG. 1), the second roller 19 moves the part of the shift operating member 13 near the horizontal axis P4 upward, as shown in FIG. The operating portion 11a of the continuously variable transmission 11 is operated to a predetermined high speed position. On the reverse side, the length of the lever guide 10 is set short, and when operating the gear shift lever 1 to the reverse side, unless the lever guide 10 is operated to the reverse side end, the vehicle will not actually go backwards. It looks like this. This ensures that reversing is always done at a constant speed.

【0017】〔別実施例〕前述の図1及び図2の構造に
おいて、次のように構成してもよい。つまり、操作アー
ム17を支持軸2の下側に固定すると共に、変速操作部
材13の横軸芯P4を変速レバー1の後側(図1におい
て紙面下側)に配置する。そして、変速操作部材13を
前方(図1において紙面上方)に延出して、この変速操
作部材13を操作アーム17の第1及び第2ローラー1
8、19に下側から当て付ける構造である。これ以外の
前後進切換装置5との連係は図1及び図2と同一とする
。この構造により、変速レバー1を前進側に操作すると
第2ローラー19によって、変速操作部材13における
横軸芯P4から遠い部分が下方に押し下げられて行き、
無段変速装置11が高速側Hに操作されて行く。逆に変
速レバー1を後進側に操作すると第1ローラー18によ
って、変速操作部材13における横軸芯P4に近い部分
が下方に押し下げられて行き、無段変速装置11が高速
側Hに操作されて行くのである。この場合、一定の速度
で後進するように設定するのではなく、後進側も変速操
作するように構成してもよい。
[Another Embodiment] The structure shown in FIGS. 1 and 2 described above may be configured as follows. That is, the operation arm 17 is fixed to the lower side of the support shaft 2, and the transverse axis P4 of the speed change operation member 13 is arranged on the rear side of the speed change lever 1 (lower side in FIG. 1). Then, the speed change operation member 13 is extended forward (upwards of the page in FIG. 1), and this speed change operation member 13 is moved to
8 and 19 from below. Other connections with the forward/reverse switching device 5 are the same as those in FIGS. 1 and 2. With this structure, when the shift lever 1 is operated in the forward direction, the second roller 19 pushes down the portion of the shift operating member 13 far from the horizontal axis P4.
The continuously variable transmission 11 is operated to the high speed side H. Conversely, when the shift lever 1 is operated to the reverse side, the first roller 18 pushes down the portion of the shift operating member 13 near the horizontal axis P4, and the continuously variable transmission 11 is operated to the high speed side H. I'm going. In this case, instead of setting the vehicle to reverse at a constant speed, the vehicle may be configured to perform a speed change operation on the reverse side as well.

【0018】又、図1及び図2の構造において、変速操
作部材13の横軸芯P4を変速レバー1の後側(図1に
おいて紙面下側)に配置してもよい。この場合には変速
レバー1を前進側に操作すると第1ローラー18によっ
て、変速操作部材13における横軸芯P4に近い部分が
上方に押し上げられて行き、無段変速装置11が高速側
Hに操作されて行く。逆に変速レバー1を後進側に操作
すると第2ローラー19によって、変速操作部材13に
おける横軸芯P4から遠い部分が上方に押し上げられて
行き、無段変速装置11が高速側Hに操作されて行くの
である。
In the structure shown in FIGS. 1 and 2, the transverse axis P4 of the speed change operation member 13 may be arranged on the rear side of the speed change lever 1 (lower side in FIG. 1). In this case, when the shift lever 1 is operated to the forward side, the first roller 18 pushes up the portion of the shift operating member 13 near the horizontal axis P4, and the continuously variable transmission 11 is operated to the high speed side H. I'm going to be done. Conversely, when the shift lever 1 is operated to the reverse side, the second roller 19 pushes up the portion of the shift operating member 13 far from the horizontal axis P4, and the continuously variable transmission 11 is operated to the high speed side H. I'm going.

【0019】図1及び図2に示す構造では、デテントア
ーム12により前後進切換装置5が前進位置F、後進位
置R及び中立位置Nの3位置にて保持されるように構成
したが、図3に示すように一対のバネ20を切換部材3
に取り付けて、この切換部材3及び前後進切換装置5を
中立位置N側に復帰付勢するように構成してもよい。 又、図3に示すアーム21は前後進切換装置5の操作部
5aに軽く抵抗を与えるものである。
In the structure shown in FIGS. 1 and 2, the forward/reverse switching device 5 is held by the detent arm 12 at three positions: forward position F, reverse position R, and neutral position N. As shown in FIG.
Alternatively, the switching member 3 and the forward/reverse switching device 5 may be biased to return to the neutral position N side. Further, the arm 21 shown in FIG. 3 provides a slight resistance to the operating portion 5a of the forward/reverse switching device 5.

【0020】尚、特許請求の範囲の項に図面との対照を
便利にする為に符号を記すが、該記入により本発明は添
付図面の構成に限定されるものではない。
[0020]Although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

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

【図1】変速レバー付近の平面構造、変速レバーと走行
用の無段変速装置及び前後進切換装置との連係構造を示
す平面図
[Fig. 1] A plan view showing the planar structure near the gear shift lever and the linkage structure between the gear shift lever, the continuously variable transmission for driving, and the forward/reverse switching device.

【図2】変速レバーの基部付近の側面図[Figure 2] Side view of the vicinity of the base of the gear shift lever

【図3】別実施
例における変速レバー付近の平面図
[Fig. 3] Plan view of the vicinity of the gear shift lever in another embodiment

【符号の説明】[Explanation of symbols]

1                変速レバー3  
              切換部材3a     
         切換部材の融通部5       
         前後進切換装置11       
       走行用の無段変速装置13      
        変速操作部材14,15,16  連
係機構
1 Gear shift lever 3
Switching member 3a
Flexible part 5 of switching member
Forward/forward switching device 11
Continuously variable transmission device 13 for driving
Speed change operation members 14, 15, 16 linkage mechanism

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】  走行用の無段変速装置(11)と、前
後進切換装置(5)とを備えた作業車の変速操作構造で
あって、機体の前後方向及び左右方向に揺動操作自在な
変速レバー(1)を備えて、前記無段変速装置(11)
の中立位置(N)にて前記変速レバー(1)を左右に操
作するとこの変速レバー(1)に係合して左右に揺動し
前記前後進切換装置(5)を前進側又は後進側に切換操
作する切換部材(3)を設け、この切換部材(3)に前
記変速レバー(1)の前進側の前方への操作及び後進側
の後方への操作を許す融通部(3a)を設けると共に、
前記変速レバー(1)の支点(P1)より後方に位置す
る第1操作部(18)及び前記支点(P1)より前方に
位置する第2操作部(19)を前記変速レバー(1)に
設け、前記無段変速装置(11)と連係機構(14),
(15),(16)を介して連動連結された変速操作部
材(13)を前記変速レバー(1)の横側近傍に上下揺
動自在に支持して、前記変速レバー(1)を前進側の前
方に倒し操作すると前記第1及び第2操作部(18),
(19)のうちの一方にて前記変速操作部材(13)を
高速側に押し操作可能に、且つ、前記変速レバー(1)
を後進側の後方に倒し操作すると前記第1及び第2操作
部(18),(19)のうちの他方にて前記変速操作部
材(13)を高速側に押し操作可能に構成している作業
車の変速操作構造。
[Claim 1] A speed change operation structure for a working vehicle, which is equipped with a continuously variable transmission device (11) for traveling and a forward/reverse switching device (5), which allows the machine body to be freely swung in the longitudinal direction and the left/right direction. The continuously variable transmission (11) is equipped with a speed change lever (1).
When the shift lever (1) is operated to the left or right in the neutral position (N) of the shift lever (1), the shift lever (1) is engaged and swings left and right, causing the forward/reverse switching device (5) to move forward or backward. A switching member (3) for switching operation is provided, and the switching member (3) is provided with a flexible portion (3a) that allows forward operation on the forward side and rearward operation on the reverse side of the speed change lever (1). ,
The shift lever (1) is provided with a first operating portion (18) located behind the fulcrum (P1) of the shift lever (1) and a second operating portion (19) located forward of the fulcrum (P1). , the continuously variable transmission (11) and the linkage mechanism (14),
A shift operating member (13) interlocked and connected via (15) and (16) is supported near the side of the shift lever (1) so as to be able to swing up and down, and the shift lever (1) is moved to the forward direction. When operated by tilting it forward, the first and second operation parts (18),
(19) is operable to push the speed change operation member (13) to the high speed side, and the speed change lever (1)
When the gear shift operating member (13) is pushed backwards toward the reverse side, the other of the first and second operating sections (18) and (19) is operated to push the shift operating member (13) toward the high speed side. Car gear shift operation structure.
【請求項2】  前記変速操作部材(13)の揺動支点
(P4)を前記変速レバー(1)の支点(P1)よりも
前方に位置させ、この変速操作部材(13)を後方に延
出させて、前記変速レバー(1)の第1操作部(18)
にて前記変速操作部材(13)における揺動支点(P4
)から遠い部分を高速側に押し操作するように、且つ、
前記変速レバー(1)の第2操作部(19)にて前記変
速操作部材(13)における揺動支点(P4)に近い部
分を高速側に押し操作するように構成している請求項1
記載の作業車の変速操作構造。
2. A swinging fulcrum (P4) of the shift operating member (13) is located forward of a fulcrum (P1) of the shift lever (1), and the shift operating member (13) is extended rearward. and the first operating portion (18) of the gear shift lever (1).
At the swing fulcrum (P4) of the speed change operation member (13)
) so as to push the part farthest from the high speed side, and
Claim 1, wherein a second operating portion (19) of the shift lever (1) is configured to push a portion of the shift operating member (13) close to a swing fulcrum (P4) toward a high speed side.
The gear shift operation structure of the described work vehicle.
JP7877391A 1991-04-11 1991-04-11 Speed change operation structure of working vehicle Pending JPH04314625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7877391A JPH04314625A (en) 1991-04-11 1991-04-11 Speed change operation structure of working vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7877391A JPH04314625A (en) 1991-04-11 1991-04-11 Speed change operation structure of working vehicle

Publications (1)

Publication Number Publication Date
JPH04314625A true JPH04314625A (en) 1992-11-05

Family

ID=13671228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7877391A Pending JPH04314625A (en) 1991-04-11 1991-04-11 Speed change operation structure of working vehicle

Country Status (1)

Country Link
JP (1) JPH04314625A (en)

Similar Documents

Publication Publication Date Title
JPH069939B2 (en) Shift lever device for automatic transmission
JPH04368231A (en) Forward/backward movement gear shift operation structure for working vehicle
JPH04314625A (en) Speed change operation structure of working vehicle
JPH0510442A (en) Cultivator with continuously variable transmission
JP3722632B2 (en) Work vehicle turning control device
KR102464878B1 (en) Driving control apparatus of agriculture vehicle
JP4137777B2 (en) Working gear shifting structure
JP2524953B2 (en) Shift lever device
JPH0713105U (en) Gear shift lever guide structure for work vehicles
JP2583667B2 (en) Work vehicle traveling speed change structure
JP2813636B2 (en) Shifting structure of work vehicle
JP3621594B2 (en) Shifting operation device for traveling vehicle
JP3025641B2 (en) Operation unit structure of work vehicle
JPH0619613Y2 (en) Traveling device for snowplow
JP4887586B2 (en) Shift lever device for work vehicle
JPH08118976A (en) Four-wheel drive working vehicle
JPH0756321Y2 (en) Shifting device for compaction machine
JP2002106712A (en) Linear shift type gear shift operating device
JP2006137335A (en) Volume control mechanism for hydraulic transmission
JPH04197109A (en) Reaping harvester
JPH04107557U (en) Gear shift operation structure of work vehicle
JP3685916B2 (en) Steering control device for continuously variable transmission vehicle
JPH0591223U (en) Connection structure of shift lever in work vehicle
JPH048259B2 (en)
JPH04119723U (en) Speed change operation structure of walk-behind work equipment