JP2000198364A - Shift operating device for traveling vehicle - Google Patents
Shift operating device for traveling vehicleInfo
- Publication number
- JP2000198364A JP2000198364A JP11001465A JP146599A JP2000198364A JP 2000198364 A JP2000198364 A JP 2000198364A JP 11001465 A JP11001465 A JP 11001465A JP 146599 A JP146599 A JP 146599A JP 2000198364 A JP2000198364 A JP 2000198364A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- lever
- operating
- shift
- unit
- 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.)
- Granted
Links
Landscapes
- Gear-Shifting Mechanisms (AREA)
- Control Of Transmission Device (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、トラクタ等の走行
車両における走行系の変速操作装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift operation device for a traveling system in a traveling vehicle such as a tractor.
【０００２】[0002]
【従来の技術】トラクタ等の走行車両においては、走行
駆動系のトランスミッションとして主変速装置、副変速
装置、クリープ変速装置等を備えており、これら各変速
装置は、機械式又は油圧式の変速操作装置を介して変速
操作されるものであった。また、変速操作装置として操
作レバーにより変速操作するものにあっては、副変速装
置とクリープ変速装置とを同一の操作レバーで兼用して
操作する場合があり、例えば、操作レバーを前後及び左
右に揺動自在に設け、操作レバーを左右一方に揺動した
状態で前後に揺動することで副変速装置を変速操作し、
左右他方に揺動した状態で前後に揺動することでクリー
プ変速装置を変速操作するものであった。2. Description of the Related Art A traveling vehicle such as a tractor is provided with a main transmission, a sub transmission, a creep transmission, and the like as transmissions of a traveling drive system. Each of these transmissions is a mechanical or hydraulic transmission. The shift operation was performed via the device. Further, in the case of a shift operation device that performs a shift operation by an operation lever, the auxiliary transmission device and the creep transmission may be operated by using the same operation lever, for example, the operation lever may be moved forward and backward and left and right. The sub-transmission is shifted by operating the operation lever to the left or right while swinging back and forth.
The creep transmission is shifted by swinging back and forth while swinging left and right.
【０００３】[0003]
【発明が解決しようとする課題】上記のように、２種の
変速装置を同一の操作レバーにて変速操作を行うことに
より、変速操作の簡易化、部品点数減に伴うコストダウ
ン等が図れるものの、操作レバーを左右に揺動して各変
速装置の切り替えを行っていることから操作レバーの配
置スペース（揺動空間）を左右方向に広く設ける必要が
あった。As described above, by performing the speed change operation of the two types of transmissions with the same operation lever, the speed change operation can be simplified and the cost can be reduced due to the reduction in the number of parts. In addition, since the operation lever is swung to the left and right to switch between the transmissions, it is necessary to provide a wider space (swing space) for the operation lever in the left-right direction.
【０００４】特に、トラクタにおいては、副変速装置や
クリープ変速装置の操作レバーを運転席とその側方のフ
ェンダとの間の狭いスペースに設けることがあり、各変
速装置の切り換えを操作レバーの左右揺動で行ったので
は、レバー操作のためのスペースを確保するのが困難と
なっていた。本発明は上記問題点に鑑みてなされたもの
であり、兼用の操作レバーによる２つの変速装置に対す
る操作切換を省スペースで行い得る走行車両の変速操作
装置を提供することを目的とする。In particular, in a tractor, the operation levers of the auxiliary transmission and the creep transmission may be provided in a narrow space between the driver's seat and the fender on the side thereof. It was difficult to secure the space for lever operation by swinging. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a shift operation device for a traveling vehicle that can perform operation switching between two transmission devices by a dual-purpose operation lever in a space-saving manner.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記目的を達
成するために以下の技術的手段を講じている。すなわ
ち、本発明に係る変速操作装置は、走行系動力を変速す
る第１変速部と第２変速部とを、兼用の操作レバーによ
って変速操作する操作手段を備えている走行車両の変速
操作装置において、前記操作手段は、前記操作レバーを
その長手方向の２位置に移動することで、前記操作レバ
ーによって前記第１変速部を変速操作可能な状態と、前
記第２変速部を変速操作可能な状態とに切り換える切換
部を備えていることを特徴とするものである。The present invention employs the following technical means to achieve the above object. That is, the speed change operation device according to the present invention is a speed change operation device for a traveling vehicle including an operation unit that performs a speed change operation of a first speed change unit and a second speed change unit for shifting the power of the traveling system by a common operation lever. The operating means moves the operating lever to two positions in the longitudinal direction thereof, whereby the operating lever allows the first transmission section to perform a shift operation, and the operating section allows the second transmission section to perform a shift operation. And a switching unit for switching between (1) and (2).
【０００６】これによれば、第１又は第２変速部に対す
る操作レバーの切換が、操作レバーの揺動ではなく長手
方向への移動でなされ、これにより切換操作のためのス
ペースを小さくすることができるようになる。そのた
め、トラクタのように運転席側方の狭いスペースに操作
レバーを備えた場合であっても、変速部の切り替え操作
が好適に行えるのである。According to this, switching of the operating lever with respect to the first or second transmission portion is performed not by swinging of the operating lever but by movement in the longitudinal direction, thereby reducing the space for the switching operation. become able to. Therefore, even when the operation lever is provided in a narrow space beside the driver's seat like a tractor, the switching operation of the transmission unit can be suitably performed.
【０００７】また、上記操作手段として、前記切換部
と、前記操作レバーを長手方向移動自在で且つ揺動自在
に支持するホルダーと、前記操作レバーの揺動操作に連
動して動作することで第１変速部を変速操作する第１操
作部材と、前記操作レバーの揺動操作に連動して動作す
ることで第２変速部を変速操作する第２操作部材とを備
え、前記切換部として、前記操作レバーを長手方向移動
することで、該操作レバーを前記第１又は第２操作部材
のいずれかに係合して前記操作レバーに連動させる係合
手段とを備えて構成するのが好ましい。[0007] Further, as the operating means, the switching portion, a holder for supporting the operating lever so as to be movable in the longitudinal direction and swingable, and operating in conjunction with the swinging operation of the operating lever, are provided. A first operating member for performing a shift operation of the first transmission portion; and a second operating member for performing a shift operation of the second transmission portion by operating in conjunction with a swing operation of the operation lever. It is preferable that the operating lever is configured to include an engaging means for engaging the operating lever with one of the first and second operating members by moving the operating lever in the longitudinal direction and interlocking with the operating lever.
【０００８】これによって、簡素な構造によって機械的
に確実な切換操作が行えるようになる。また、前記切換
部に、第１，第２変速部の中立状態において操作レバー
の長手方向移動を許容し且ついずれかの変速部の変速状
態において操作レバーの長手方向移動を規制する規制手
段を備えるのが好ましく、これによって操作レバーの切
換操作にかかる誤操作が防止できる。[0008] Thus, a mechanically reliable switching operation can be performed with a simple structure. Further, the switching section includes a restricting means for permitting the longitudinal movement of the operation lever in the neutral state of the first and second transmission sections and restricting the longitudinal movement of the operation lever in the transmission state of any of the transmission sections. It is preferable to prevent erroneous operation related to the switching operation of the operation lever.
【０００９】そして、前記切換部に、第１，第２変速部
のうち使用頻度の高い変速部を変速操作可能とする前記
２位置の一方に、前記操作レバーを移動するように付勢
する付勢部材を備えるのが好ましく、これによって、操
作性が向上される。The switching section is urged to move the operation lever to one of the two positions where the most frequently used transmission section of the first and second transmission sections can be shifted. Preferably, a biasing member is provided, whereby the operability is improved.
【００１０】[0010]
【発明の実施の形態】以下本発明の実施の形態を図面を
参照して説明する。本実施形態では、発明に係る変速操
作装置１を、トラクタのトランスミッションを構成する
副変速装置（本発明に係る第１変速部）２、クリープ変
速装置（同第２変速部）３を変速操作するものとして用
いた状態を示しており、図６には、その副変速装置２及
びクリープ変速装置３を例示している。Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, the speed change operation device 1 according to the invention is operated to change the speed of a subtransmission device (first transmission portion according to the invention) 2 and a creep transmission device (second transmission portion) 3 that constitute a transmission of a tractor. FIG. 6 illustrates the auxiliary transmission 2 and the creep transmission 3.
【００１１】同図において、エンジンからの動力は主変
速装置等を介して多数段に変速された状態で主軸４に伝
達されるようになっており、該主軸４と同心状に伝達軸
５が備えられ、該伝達軸５と平行状に筒軸形の副軸６が
備えられ、伝達軸５の後端部は、軸カップリング７を介
して後輪デフ装置のデフ駆動軸８に接続されている。な
お、図中９は副軸６に内嵌されるＰＴＯ推進軸であり、
１０はシフタ１０ａを介して伝達軸５に断接される前輪
伝動軸である。In FIG. 1, power from an engine is transmitted to a main shaft 4 in a state of being shifted to a large number of stages via a main transmission or the like, and a transmission shaft 5 is concentric with the main shaft 4. A sub shaft 6 having a cylindrical shape is provided in parallel with the transmission shaft 5, and a rear end of the transmission shaft 5 is connected to a differential drive shaft 8 of a rear wheel differential device via a shaft coupling 7. ing. In the figure, reference numeral 9 denotes a PTO propulsion shaft which is fitted inside the sub shaft 6,
Reference numeral 10 denotes a front wheel transmission shaft which is connected to and disconnected from the transmission shaft 5 via the shifter 10a.
【００１２】前記副変速装置２は、主軸４の後端部に形
成された副変速第１ギヤ１１及び咬合部１１ａと、副軸
６上にニードル軸受等を介して回転自在に支持されてい
て副変速第１ギヤ１１と咬合する減速用第２ギヤ１２
と、該第２ギヤ１２と一体に形成した小径の第３ギヤ１
３と、伝達軸５上にニードル軸受等を介して回転自在に
支持されていて前記第３ギヤ１３に咬合する副変速低側
の第４ギヤ１４と、該第４ギヤ１４の咬合部１４ａとを
有する。The sub-transmission 2 is rotatably supported on the sub-shaft 6 via a needle bearing or the like and a sub-transmission first gear 11 and an engaging portion 11a formed at the rear end of the main shaft 4. Second reduction gear 12 meshing with the first auxiliary gear 11
And a small-diameter third gear 1 formed integrally with the second gear 12.
3, a fourth gear 14 on the auxiliary transmission low side rotatably supported on the transmission shaft 5 via a needle bearing or the like and meshing with the third gear 13, and an engaging portion 14a of the fourth gear 14. Having.
【００１３】前記第４ギヤ１４の咬合部１４ａと第１ギ
ヤ１１の咬合部１１ａとは軸方向に相対し、両咬合部１
１ａ、１４ａに係脱可能な第１シフタ１５が伝達軸５上
に摺動自在として備えられており、該第１シフタ１５を
第１ギヤ１１の咬合部１１ａに係合することにより主軸
４と伝達軸５とを直結して副変速高とし、第１シフタ１
５を第４ギヤ１４の咬合部１４ａに係合することで副変
速低とするのであり、ここに副変速装置２は、第１シフ
タ１５の摺動で中立を含めて高低速２段に変速可能とさ
れている。The biting portion 14a of the fourth gear 14 and the biting portion 11a of the first gear 11 are axially opposed to each other.
A first shifter 15 which can be disengaged from the main shaft 4 is provided on the transmission shaft 5 such that the first shifter 15 is slidable on the transmission shaft 5. The first shifter 1 is directly connected to the transmission shaft 5 to make the sub-shift height.
5 is engaged with the engaging portion 14a of the fourth gear 14 to reduce the sub-transmission, and the sub-transmission 2 shifts to two high and low speeds including neutral by sliding the first shifter 15. It is possible.
【００１４】前記第４ギヤ１４には、これと一体として
クリープ入力ギヤ１６が形成されて伝達軸５に回転自在
に外嵌され、副軸６には、前記入力ギヤ１６と咬合する
減速ギヤ１７とこのギヤ１７より小径のクリープ出力ギ
ヤ１８とを軸方向に並設して備え、更に、伝達軸５上に
はクリープ出力ギヤ１８と噛合する大径のクリープギヤ
１９を備え、伝達軸５上には、クリープギヤ１９の咬合
部１９ａに対して係脱自在なクリープ用シフタ（第２シ
フタ）２０を備えている。A creep input gear 16 is formed integrally with the fourth gear 14 so as to be rotatably fitted on the transmission shaft 5. And a creep output gear 18 having a diameter smaller than that of the gear 17 are provided side by side in the axial direction. Is provided with a creep shifter (second shifter) 20 which can be disengaged from the engaging portion 19a of the creep gear 19.
【００１５】そして、第２シフタ２０を摺動してクリー
プギヤ１９の咬合部１９に係合することで超低速なクリ
ープ変速を得るのであり、ここにクリープ変速装置３
は、副変速装置２の中立状態において、クリープ変速オ
フ状態（クリープ中立状態）からオン状態に変速可能と
している。なお、第１、第２シフタ１５，２０には、ホ
ーク軸を介して前後移動可能なシフトホーク２１が係合
し、該シフトホーク２１は、図３に示すようにミッショ
ンケース側壁に左右軸芯回りに回動自在に支持された第
１，第２レバー軸２２，２３の回動によって前後移動
し、これにより第１，第２シフタ１５，２０が摺動され
るようになっている。Then, by sliding the second shifter 20 and engaging the engaging portion 19 of the creep gear 19, an extremely low speed creep shift is obtained.
In the neutral state of the auxiliary transmission 2, the gear can be shifted from the creep shift off state (creep neutral state) to the on state. The first and second shifters 15 and 20 are engaged with a shift fork 21 which can be moved back and forth via a fork shaft. The first and second shifters 15 and 20 are slidably moved back and forth by the rotation of the first and second lever shafts 22 and 23 rotatably supported around the first and second levers.
【００１６】本発明に係る変速操作装置１は上記第１，
第２シフタ１５，２０の両方の摺動操作を可能とする操
作手段２９を備えたものであり、該操作手段２９は、図
１〜図５に示すように、操作レバー２８と、該操作レバ
ー２８の操作に連動して第１，第２シフタ１５，２０を
摺動操作する第１，第２操作部材３０，３１と、操作レ
バー２８の操作が第１、第２シフタ１５，２０のいずれ
か一方に対して有効となるように選択切換する切換部３
２とをを有している。The speed change operation device 1 according to the present invention comprises
An operating means 29 for enabling the sliding operation of both the second shifters 15 and 20 is provided. The operating means 29 includes an operating lever 28 and an operating lever 28, as shown in FIGS. The first and second operation members 30 and 31 that slide the first and second shifters 15 and 20 in conjunction with the operation of the operation lever 28, and the operation of the operation lever 28 is performed by any of the first and second shifters 15 and 20 A switching unit 3 for selecting and switching so as to be effective for one of them.
And 2.
【００１７】前記操作レバー２８は、棒状のロッドの先
端にグリップを設けており、図７に示すように、トラク
タ２４の運転席２５と該運転席２５の左側方にあるフェ
ンダー２６との間でフロアシート２７を貫通して上下方
向に配置されている。操作レバー２８の下端部は、ホル
ダ３３及び支軸３４を介してフロアシート２７側に支持
されており、前記支軸３４は、フロアシート２７の裏面
側に設けた正面視コ字状の保持部材３５に左右方向の軸
心回りに回動自在に支持され、前記ホルダ３３は、上下
方向の筒形とされた第１部材３３ａと、該第１部材３３
ａの前上部に固着されていて左右方向の筒形とされた第
２部材３３ｂとを備え、該第２部材３３ｂが保持部材３
５の左側で前記支軸３４に回動自在に外嵌され、第１部
材３３ａに操作レバー２８の基端部を挿通している。The operation lever 28 is provided with a grip at the tip of a rod-like rod. As shown in FIG. 7, the operation lever 28 is provided between a driver's seat 25 of a tractor 24 and a fender 26 on the left side of the driver's seat 25. It is arranged vertically through the floor sheet 27. The lower end of the operation lever 28 is supported on the floor sheet 27 side via a holder 33 and a support shaft 34, and the support shaft 34 is a U-shaped holding member provided on the back surface side of the floor sheet 27. The holder 33 is supported by a first member 33a, which is rotatable about an axis in the left-right direction, and has a cylindrical shape in the up-down direction.
and a second member 33b fixed to the front upper portion and having a tubular shape in the left-right direction, wherein the second member 33b is
5 is rotatably fitted to the support shaft 34 on the left side, and the base end of the operation lever 28 is inserted through the first member 33a.
【００１８】したがって、操作レバー２８は、支軸３４
を支点として前後に揺動可能であり、且つ第１部材３３
ａを介して上下に摺動自在となっている。また、前記保
持部材３５の左右側壁間には、左右方向の筒形に形成さ
れた支持体３６が支軸３４に対して回動自在に外嵌して
いる。前記切換部３２は、図１に示すように操作レバー
２８をその長手方向（軸方向、上下方向）の２位置Ｐ
１，Ｐ２に移動することにより、副変速装置２の第１シ
フタ１５を操作可能な状態と、クリープ変速装置３の第
２シフタ２０を操作可能な状態とに切り換えるように構
成されている。Therefore, the operating lever 28 is supported by the support shaft 34.
Can be swung back and forth around the fulcrum, and the first member 33
It is slidable up and down via a. Further, between the left and right side walls of the holding member 35, a support body 36 formed in a left-right direction cylindrical shape is rotatably fitted to the support shaft 34. As shown in FIG. 1, the switching unit 32 moves the operation lever 28 to two positions P in the longitudinal direction (axial direction, vertical direction).
1 and P2, the state is switched between a state in which the first shifter 15 of the auxiliary transmission 2 can be operated and a state in which the second shifter 20 of the creep transmission 3 can be operated.
【００１９】前記切換部３２は、操作レバー２８の下端
に設けた係合部３８と第１，第２操作部材３０，３１側
に設けた被係合部３９とからなる係合手段を有してお
り、前記係合部３８は、前記操作レバー２８の下端部に
正面視コ字状のブラケット４１を設け、該ブラケット４
１に、左右両端部が突出するように貫通する係合ピン４
２を設けて構成している。The switching section 32 has an engaging means comprising an engaging section 38 provided at the lower end of the operating lever 28 and an engaged section 39 provided on the first and second operating members 30, 31. The engaging portion 38 is provided with a bracket 41 having a U-shape in a front view at the lower end of the operation lever 28.
1, an engaging pin 4 penetrating so that both right and left ends protrude.
2 is provided.
【００２０】また、前記被係合部３９は、前記支軸３４
の左端部に固定された板状の第１切換部材４３と、前記
支持体３６の左端部に固定された第２切換部材４４とを
有し、第１，第２切換部材４３，４４は、前記ブラケッ
ト４１を挟んで左右に対向して配置されている。図４及
び図５に示すように、前記第１，第２切換部材４３，４
４には、それぞれ前記係合ピン４２の両端が挿通する第
１，第２係合孔４５，４６を備え、第１係合孔４５は、
上下方向の長孔状に形成された第１上下孔部４５ａと、
該第１上下孔部４５ａの下端から後方へ延び且つ支軸３
４を中心とする円弧状に形成された第１前後孔部４５ｂ
とを有して側面視略Ｌ字状に形成されている。The engaged portion 39 is connected to the support shaft 34.
And a second switching member 44 fixed to the left end of the support 36. The first and second switching members 43, 44 The bracket 41 is disposed to face left and right with the bracket 41 interposed therebetween. As shown in FIGS. 4 and 5, the first and second switching members 43, 4
4 includes first and second engagement holes 45 and 46 through which both ends of the engagement pin 42 are inserted, respectively.
A first upper and lower hole portion 45a formed in a vertically long slot shape;
The support shaft 3 extends rearward from the lower end of the first upper and lower holes 45a.
The first front and rear hole portions 45b formed in an arc shape with the center at 4
And is formed in a substantially L-shape in side view.
【００２１】また、第２係合孔４６は、上下方向の長孔
状に形成されていて操作レバー２８の中立状態Ｎで前記
第１前後孔部４５ａに左右に対向する第２上下孔部４６
ａと、該第２上下孔部４６ａの上端から前後両方に延び
且つ前記支軸３４を中心とする円弧状に形成された前後
孔部４６ｂとを有する。したがって、操作レバー２８を
中立状態として上下に移動することで係合ピン４２が第
１，第２上下孔部４５ａ，４６ａ内を上下に移動し、係
合ピン４２が第１、第２上下孔部４５ａ，４６ａの上側
に配置された状態（操作レバー２８を引き上げて第１位
置Ｐ１とした状態）で操作レバー２８を前後に揺動する
と、係合ピン４２が第１上下孔部４５ａに係合するとと
もに第１切換部材４３が前後に揺動して支軸３４を回動
し、係合ピン４２が第２前後孔部４６ｂ内を移動して第
２切換部材４４は停止状態を維持するようになってい
る。The second engagement hole 46 is formed in the shape of an elongated hole in the up-down direction, and is opposed to the first front-rear hole 45a in the neutral state N of the operation lever 28 from left to right.
a and a front and rear hole portion 46b extending both forward and backward from the upper end of the second upper and lower hole portion 46a and formed in an arc shape centering on the support shaft 34. Therefore, by moving the operation lever 28 up and down with the operation lever 28 in the neutral state, the engagement pin 42 moves up and down in the first and second upper and lower holes 45a and 46a, and the engagement pin 42 moves up and down in the first and second upper and lower holes. When the operation lever 28 is swung back and forth in a state where the operation lever 28 is pulled up to the first position P1 while being disposed above the portions 45a and 46a, the engagement pin 42 is engaged with the first upper and lower hole portions 45a. At the same time, the first switching member 43 swings back and forth to rotate the support shaft 34, the engaging pin 42 moves in the second front and rear hole 46b, and the second switching member 44 maintains the stopped state. It has become.
【００２２】また、操作レバー２８を第１，第２上下孔
部４５ａ，４６ａの下側に配置した状態（操作レバー２
８を押し下げて第２位置Ｐ２とした状態）で操作レバー
２８を前側に揺動することで、係合ピン４２が第２上下
孔部４６ａに係合するとともに第２切換部材４４が後側
に揺動して支持体３６を回動し、係合ピン４２が第１前
後孔部４５ｂ内を移動して第１切換部材４３は停止状態
を維持するようになっている。The operation lever 28 is disposed below the first and second upper and lower holes 45a and 46a (operation lever 2).
8 is pushed down to the second position P2) to swing the operation lever 28 forward, whereby the engagement pin 42 is engaged with the second upper and lower holes 46a and the second switching member 44 is moved rearward. The support member 36 is swung to rotate, the engaging pin 42 moves in the first front-rear hole 45b, and the first switching member 43 maintains the stopped state.
【００２３】前記第１操作部材３０は、図１〜図３に示
すように、支軸３４の右端部に固定された第１操作アー
ム４８と、第１レバー軸２２に固定された第１連動アー
ム４９と、該第１連動アーム４９の下端部と第１操作ア
ーム４８の下端部とを連結する第１ロッド５０とを有
し、第２操作部材３１は、支持体３６の右端部に固定さ
れた第２操作アーム５１と、第２レバー軸２３に固定さ
れた第２連動アーム５２と、該第２連動アーム５２の下
端部と第２操作アーム５１の下端部とを連結する第２ロ
ッド５３とを有している。As shown in FIGS. 1 to 3, the first operation member 30 includes a first operation arm 48 fixed to the right end of the support shaft 34, and a first interlocking member fixed to the first lever shaft 22. An arm 49 and a first rod 50 connecting a lower end of the first interlocking arm 49 and a lower end of the first operating arm 48 are provided. The second operating member 31 is fixed to a right end of the support 36. Second operating arm 51, a second interlocking arm 52 fixed to the second lever shaft 23, and a second rod connecting the lower end of the second interlocking arm 52 and the lower end of the second operation arm 51. 53.
【００２４】上記切換部３２及び第１、第２操作部材３
０，３１の構成において、操作レバー２８を上方の第１
位置Ｐ１に引き上げた状態で前後に揺動すると、第２切
換部材４４が停止した状態で第１切換部材４３が前後に
揺動し、支軸３４を回動するとともに第１操作アーム４
８，第１ロッド５０，第１連動アーム４９を介して第１
レバー軸２２を回動し、第１シフタ１５を摺動して副変
速装置２を中立Ｎから高低Ｈ，Ｌに変速する。また、操
作レバー２８を下方の第２位置Ｐ２に押し下げた状態で
前後に揺動すると、第１切換部材４３が停止した状態で
第２切換部材４４が前後に揺動し、支持体３６を回動す
るとともに第２操作アーム５１，第２ロッド５３，第２
連動アーム５２を介して第２レバー軸２３を回動し、第
２シフタ２０を摺動してクリープ変速装置３をオンオフ
に変速するのである。The switching section 32 and the first and second operating members 3
In the configuration of FIG.
When the first switching member 43 is swung back and forth while being pulled up to the position P1, the first switching member 43 is swung back and forth with the second switching member 44 stopped, and the support shaft 34 is rotated and the first operation arm 4 is rotated.
8, the first rod 50, the first
By rotating the lever shaft 22 and sliding the first shifter 15, the auxiliary transmission 2 is shifted from neutral N to high and low H and L. Further, when the operation lever 28 is pushed back and forth in a state where it is pushed down to the second position P2 below, the second switching member 44 swings back and forth with the first switching member 43 stopped, and the support 36 is turned. The second operation arm 51, the second rod 53, the second
The second lever shaft 23 is rotated via the interlocking arm 52, and the second shifter 20 is slid to shift the creep transmission 3 on and off.
【００２５】また、操作レバー２８を第１位置Ｐ１とし
て前側に揺動することで副変速低Ｌとするとともに、中
立Ｎを挟んで後側に揺動することで副変速高Ｈとし、操
作レバー２８を第２位置Ｐ２として前側に揺動すること
でクリープ変速オンとするとともに、中立Ｎに戻すこと
でクリープ変速オフとするようになっている。以上のよ
うに操作レバー２８を上下方向に移動することにより副
変速装置２とクリープ変速装置３との操作切換を行うこ
とから、運転席２５側方の狭い左右スペースであっても
好適に切換操作が行える。Further, the operation lever 28 is set to the first position P1 to swing forward to lower the auxiliary transmission low L, and to swing rearward across the neutral N to obtain the auxiliary transmission height H. By setting the second position P2 to the second position P2 and swinging forward, the creep shift is turned on, and by returning to the neutral position N, the creep shift is turned off. As described above, since the operation switching between the auxiliary transmission 2 and the creep transmission 3 is performed by moving the operation lever 28 in the vertical direction, the switching operation can be suitably performed even in the narrow left and right space on the driver's seat 25 side. Can be performed.
【００２６】また、従来では、操作レバーを前後だけで
なく左右にも揺動することから前後左右２本の揺動支軸
を必要としていたが、本発明では、揺動方向が前後の１
方向となるため、操作レバー２８の支持構造を簡素化で
きるのである。そして、第１，第２係合孔４５，４６の
形状により、副変速装置２及びクリープ変速装置３が中
立のときのみ操作レバー２８の上下移動を許容し、副変
速装置２又はクリープ変速装置３を変速した状態、すな
わち操作レバー２８を揺動操作して一方の切換部材４
３，４４を揺動した状態では、他方の前後孔部４６ｂ，
４５ｂに係合ピン４２が干渉して操作レバー２８の上下
移動が規制されるようになっており、これによって、操
作レバー２８の誤操作を防止する規制手段を構成してい
るのである。Conventionally, since the operating lever swings not only to the front and rear but also to the left and right, two swing support shafts are required.
Since the direction is the direction, the support structure of the operation lever 28 can be simplified. The shape of the first and second engagement holes 45 and 46 allows the operation lever 28 to move up and down only when the auxiliary transmission 2 and the creep transmission 3 are in the neutral position. Is shifted, that is, the operation lever 28 is rocked to operate one of the switching members 4.
3 and 44, the other front and rear hole portions 46b,
The engagement pin 42 interferes with 45b, so that the vertical movement of the operation lever 28 is restricted, thereby constituting a restriction means for preventing erroneous operation of the operation lever 28.
【００２７】前記操作レバー２８の上下中途部には、バ
ネ受け部５５が設けられており、該バネ受け部５５とホ
ルダ３３の第１部材３３ａとの間には、圧縮コイルバネ
よりなる付勢部材５６を操作レバー２８に外嵌して備
え、該付勢部材５６により操作レバー２８を上方側の第
１位置Ｐ１に移動するように付勢している。したがっ
て、前記操作レバー２８は、中立位置Ｎでは副変速装置
２を変速可能な状態に維持されるようになっており、操
作レバー２８を付勢部材５６に抗して押し下げて第２位
置Ｐ２とするとともに前側に揺動することによりクリー
プ変速可能であり、中立Ｎに戻すことで付勢部材５６に
よって自動的に操作レバー２８を第１位置Ｐ１に上方復
帰するようになっている。A spring receiving portion 55 is provided in the middle of the operation lever 28 in the vertical direction. A biasing member made of a compression coil spring is provided between the spring receiving portion 55 and the first member 33a of the holder 33. The operation lever 28 is biased by the biasing member 56 to move to the first position P1 on the upper side. Accordingly, in the neutral position N, the operation lever 28 is maintained in a state in which the speed of the auxiliary transmission 2 can be changed, and the operation lever 28 is pressed down against the urging member 56 to move to the second position P2. In addition, a creep shift can be performed by swinging forward, and the operating lever 28 is automatically returned to the first position P1 by the urging member 56 by returning to the neutral position N.
【００２８】このように、操作レバー２８の中立状態に
おいて、クリープ変速装置３に比べて使用頻度の高い副
変速装置２を変速可能な状態にすることで該副変速装置
２を即座に変速操作することができ、操作性向上が図れ
るのである。なお、上記実施形態においては、第１，第
２操作部材３０，３１の操作アーム４８，５１を省略
し、切換部材４３，４４にロッドを連結するようにして
もよく、これによって構造の簡素化が図れるようにな
る。さらに、切換部材４３，４４自体を操作部材として
その下端部を直接的にシフトホーク２１に係合し、これ
によってシフタ１５，２０を操作することも可能であ
る。As described above, in the neutral state of the operating lever 28, the sub-transmission 2 which is used more frequently than the creep transmission 3 can be shifted so that the sub-transmission 2 can be shifted immediately. It is possible to improve operability. In the above embodiment, the operation arms 48 and 51 of the first and second operation members 30 and 31 may be omitted, and the rods may be connected to the switching members 43 and 44, thereby simplifying the structure. Can be achieved. Furthermore, it is also possible to use the switching members 43 and 44 themselves as operating members and directly engage the lower ends thereof with the shift forks 21, thereby operating the shifters 15 and 20.
【００２９】図８は、本発明の第２の実施形態を示すも
のであり、本実施形態では、操作レバー２８を付勢部材
５６により下側に移動するように付勢し、下側に移動し
た第１位置Ｐ１で副変速装置２を操作可能な状態とし、
操作レバー２８を上側に移動した第２位置Ｐ２でクリー
プ変速装置３を操作可能としたものである。具体的に
は、操作レバー２８下端のブラケット４１とホルダ３３
の第１部材３３ａとの間の操作レバー２８上に、付勢部
材５６を構成する圧縮コイルバネを嵌挿しており、第１
切換部材４３に形成した第１係合孔４５が、上下孔部４
５ａと該上下孔部４５ａの上端から後方に延びる前後孔
部４５ｂとによって下向きＬ字状を呈し、第２切換部材
４４に形成した第２係合孔４６が、上下孔部４６ａと、
該上下孔部４６ａの下端から前後双方に延びる前後孔部
４６ｂによって下向きＴ字状を呈したものとなってい
る。FIG. 8 shows a second embodiment of the present invention. In this embodiment, the operating lever 28 is urged by an urging member 56 so as to move downward, and moves downward. The auxiliary transmission 2 is made operable at the first position P1 thus set,
The creep transmission 3 can be operated at a second position P2 in which the operation lever 28 has been moved upward. Specifically, the bracket 41 at the lower end of the operation lever 28 and the holder 33
A compression coil spring constituting the urging member 56 is fitted on the operation lever 28 between the first member 33a and the first member 33a.
The first engagement hole 45 formed in the switching member 43 is
5a and a front-rear hole 45b extending rearward from the upper end of the upper and lower holes 45a to form a downward L-shape.
It has a downward T-shape due to front and rear holes 46b extending both forward and backward from the lower ends of the upper and lower holes 46a.
【００３０】本実施形態によれば、上記第１実施形態と
同様の作用効果を奏するものとなるが、クリープ変速装
置２の操作のために操作レバー２８を付勢部材５６に抗
して上方に引き上げなければならず、若干操作が困難と
なり、この点で第１実施形態の方が有利なものとなる。
本発明は、上記実施形態に限ることなく適宜設計変更可
能であり、例えば、第１、第２切換部材４３，４４側に
係合ピンを形成し、操作レバー２８側のブラケット４１
に係合ピンが挿通係合する係合孔を形成してもよい。According to this embodiment, the same operation and effect as those of the first embodiment can be obtained, but the operation lever 28 is moved upward against the urging member 56 to operate the creep transmission 2. The operation has to be lifted up, which makes the operation somewhat difficult. In this regard, the first embodiment is more advantageous.
The present invention is not limited to the above embodiment, and the design can be changed as appropriate. For example, an engagement pin is formed on the first and second switching members 43 and 44 and the bracket 41 on the operation lever 28 side.
An engaging hole through which the engaging pin is inserted and engaged may be formed.
【００３１】また、変速操作装置１の配置についても上
記に限るものではなく、運転席２５の右側や操縦ハンド
ル５８の近傍の配設してもよく、また操作レバー２８を
横向きとして左右又は前後方向に押し引き移動すること
で変速装置の操作切換を行うようにしてもよい。また、
本発明の変速操作装置１は、副変速装置２とクリープ変
速装置３とに用いるに限らず、主変速装置、シャトル変
速装置等にも利用することが可能である。The arrangement of the speed change operation device 1 is not limited to the above, but may be arranged on the right side of the driver's seat 25 or in the vicinity of the control handle 58. The operation of the transmission may be switched by pushing and pulling the transmission. Also,
The speed change operation device 1 of the present invention is not limited to being used for the auxiliary speed change device 2 and the creep speed change device 3, but can also be used for a main speed change device, a shuttle speed change device, and the like.
【００３２】[0032]
【発明の効果】以上詳述したように、本発明によれば、
操作レバーの長手方向の移動によって第１変速部と第２
変速部との操作切換が省スペースで行えるようになる。As described in detail above, according to the present invention,
By moving the operation lever in the longitudinal direction, the first transmission portion and the second transmission portion are moved.
Operation switching with the transmission unit can be performed in a small space.
【図１】本発明の第１の実施形態にかかる変速操作装置
の側面図である。FIG. 1 is a side view of a speed change operation device according to a first embodiment of the present invention.
【図２】同背面図である。FIG. 2 is a rear view of the same.
【図３】変速操作装置を分解して示す斜視図である。FIG. 3 is an exploded perspective view showing the speed change operation device.
【図４】切換部の第１切換部材を示す側面図である。FIG. 4 is a side view showing a first switching member of the switching unit.
【図５】切換部の第２切換部材を示す側面図である。FIG. 5 is a side view showing a second switching member of the switching unit.
【図６】第１、第２変速部の一例を示す側面断面図であ
る。FIG. 6 is a side sectional view showing an example of first and second transmission units.
【図７】走行車両を構成するトラクタの平面図である。FIG. 7 is a plan view of a tractor included in the traveling vehicle.
【図８】本発明の第２の実施形態に係る変速操作装置の
側面図である。FIG. 8 is a side view of a speed change operation device according to a second embodiment of the present invention.
１ 変速操作装置 ２ 副変速装置（第１変速部） ３ クリープ変速装置（第２変速部） ２８ 操作レバー ２９ 操作手段 ３０ 第１操作部材 ３１ 第２操作部材 ３２ 切換部 ３３ ホルダ ３８ 係合部（係合手段） ３９ 被係合部（係合手段） REFERENCE SIGNS LIST 1 speed change operation device 2 auxiliary speed change device (first speed change portion) 3 creep speed change device (second speed change portion) 28 operation lever 29 operation means 30 first operation member 31 second operation member 32 switching portion 33 holder 38 engagement portion ( Engaging means) 39 Engaged part (engaging means)
Claims (4)
変速部とを、兼用の操作レバーによって変速操作する操
作手段を備えている走行車両の変速操作装置において、 前記操作手段は、前記操作レバーをその長手方向の２位
置に移動することで、該操作レバーによって前記第１変
速部を変速操作可能な状態と、前記第２変速部を変速操
作可能な状態とに切り換える切換部を有することを特徴
とする走行車両の変速操作装置。A first transmission unit for shifting the power of the traveling system and a second transmission unit;
A speed change operation device for a traveling vehicle, comprising: an operation means for performing a speed change operation with a transmission unit by a dual-purpose operation lever, wherein the operation means moves the operation lever to two positions in a longitudinal direction thereof to perform the operation. A shift operation device for a traveling vehicle, comprising: a switching unit that switches between a state in which the first transmission unit can perform a shift operation by a lever and a state in which the second transmission unit can perform a shift operation.
作レバーを長手方向移動自在で且つ揺動自在に支持する
ホルダーと、前記操作レバーの揺動操作に連動して第１
変速部を変速操作する第１操作部材と、前記操作レバー
の揺動操作に連動して第２変速部を変速操作する第２操
作部材とを有し、 前記切換部は、前記操作レバーを長手方向の前記２位置
に移動することにより、該操作レバーを第１又は第２操
作部材に係合して前記操作レバーに連動させる係合手段
を備えていることを特徴とする請求項１に記載の走行車
両の変速装置。2. The operating device according to claim 1, wherein the operation unit includes a switching unit, a holder that supports the operation lever so as to be movable in a longitudinal direction and swingably, and a first unit that is interlocked with a swing operation of the operation lever.
A first operating member for shifting the speed of the shifting unit; and a second operating member for shifting the speed of the second shifting unit in conjunction with the swing operation of the operating lever, wherein the switching unit extends the operating lever in a longitudinal direction. 2. An engaging means for moving the operating lever to the first or second operating member by moving the operating lever to the two positions in the direction and interlocking the operating lever with the operating lever. Transmission of a traveling vehicle.
立状態において操作レバーの長手方向移動を許容し且つ
いずれかの変速部の変速状態において操作レバーの長手
方向移動を規制する規制手段を備えていることを特徴と
する請求項２に記載の走行車両の変速操作装置。3. The engaging means permits longitudinal movement of the operating lever in a neutral state of the first and second transmission parts, and regulates longitudinal movement of the operating lever in a shifting state of any of the transmission parts. The shift operation device for a traveling vehicle according to claim 2, further comprising a regulating unit.
使用頻度の高い変速部を変速操作可能とする前記２位置
の一方に、前記操作レバーを移動するように付勢する付
勢部材を備えていることを特徴とする請求項１〜３のい
ずれかに記載の走行車両の変速走査装置。4. The switching unit for urging the operation lever to move to one of the two positions where a frequently used transmission unit of the first and second transmission units is capable of performing a shift operation. The speed change scanning device for a traveling vehicle according to claim 1, further comprising a biasing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00146599A JP3621594B2 (en) | 1999-01-06 | 1999-01-06 | Shifting operation device for traveling vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00146599A JP3621594B2 (en) | 1999-01-06 | 1999-01-06 | Shifting operation device for traveling vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000198364A true JP2000198364A (en) | 2000-07-18 |
| JP3621594B2 JP3621594B2 (en) | 2005-02-16 |
Family
ID=11502225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00146599A Expired - Fee Related JP3621594B2 (en) | 1999-01-06 | 1999-01-06 | Shifting operation device for traveling vehicle |
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| Country | Link |
|---|---|
| JP (1) | JP3621594B2 (en) |
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1999
- 1999-01-06 JP JP00146599A patent/JP3621594B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JP3621594B2 (en) | 2005-02-16 |
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