JPH0113875Y2 - - Google Patents
Info
- Publication number
- JPH0113875Y2 JPH0113875Y2 JP14432983U JP14432983U JPH0113875Y2 JP H0113875 Y2 JPH0113875 Y2 JP H0113875Y2 JP 14432983 U JP14432983 U JP 14432983U JP 14432983 U JP14432983 U JP 14432983U JP H0113875 Y2 JPH0113875 Y2 JP H0113875Y2
- Authority
- JP
- Japan
- Prior art keywords
- pulley piece
- pulley
- sliding
- piece
- spring
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 26
- 230000007423 decrease Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
Landscapes
- Gear-Shifting Mechanisms (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は、コンバイン等の農業用作業機械や農
用運搬車等に広く利用されているベルト式無段変
速装置で、特に、Vベルトを巻き掛けた駆動側V
プーリと従動側Vプーリのベルト巻き掛け有効ピ
ツチ径が変速時に共に変わるベルト式無段変速装
置に関する。[Detailed description of the invention] (Field of industrial application) This invention is a belt-type continuously variable transmission device that is widely used in agricultural working machines such as combines and agricultural transport vehicles. Applied drive side V
This invention relates to a belt-type continuously variable transmission in which the effective pitch diameters of the belt winding of the pulley and the driven side V-pulley change together during gear shifting.
(従来技術)
前記のベルト式無段変速装置は、実公昭58−
10039号公報に記載されている如く、従動側Vプ
ーリの摺動プーリ片がスプリングによつて固定プ
ーリ片側へ押し付けられてVベルトを挟み込み、
駆動側Vプーリの摺動プーリ片をカム等で摺動操
作して従動側Vプーリの摺動プーリ片をVベルト
の張力変更に伴う側圧で摺動させ、駆動側Vプー
リと従動側Vプーリの巻き掛け有効ピツチ径を変
化させて変速するようにしている。(Prior art) The above-mentioned belt type continuously variable transmission was developed in 1983-
As described in Publication No. 10039, the sliding pulley piece of the driven side V-pulley is pressed against one side of the fixed pulley by the spring and pinches the V-belt.
The sliding pulley piece of the driving side V-pulley is slid with a cam, etc., and the sliding pulley piece of the driven side V-pulley is slid by the lateral pressure caused by changing the tension of the V-belt, and the driving side V-pulley and the driven side V-pulley are The gears are changed by changing the effective winding pitch diameter.
(考案が解決しようとする問題点)
前記のベルト式無段変速装置は、従動側Vプー
リの摺動プーリ片を押圧するスプリングの押圧力
によつてVベルトの伝動トルクが決まるため、高
トルクを一定の変速比で伝動する場合には、該ス
プリングの押圧力を強くしなければならない。こ
の場合には、増速させるために従動側Vプーリの
有効ピツチ径を小さくするため該スプリングの押
圧力に打ち勝つて駆動側Vプーリの摺動プーリ片
を摺動させなければならないために、変速操作レ
バーに強い操作力を加えなければならない。(Problem to be solved by the invention) The belt-type continuously variable transmission described above has a high torque transmission because the transmission torque of the V-belt is determined by the pressing force of the spring that presses the sliding pulley piece of the driven side V-pulley. In order to transmit the transmission at a constant gear ratio, the pressing force of the spring must be increased. In this case, in order to increase the speed, the sliding pulley piece of the driving side V-pulley must slide by overcoming the pressing force of the spring in order to reduce the effective pitch diameter of the driven side V-pulley. Strong operating force must be applied to the operating lever.
そこで、駆動側プーリの摺動プーリ片をスプリ
ングで固定プーリ片側へ押圧することが考えら
れ、この駆動側スプリングの押圧力を従動側スプ
リングの押圧力と同等にして変速幅の略中間でバ
ランスするようにした構成がある。 Therefore, it is possible to use a spring to press the sliding pulley piece of the driving pulley toward one side of the fixed pulley, and make the pressing force of the driving side spring equal to the pressing force of the driven side spring and balance it approximately in the middle of the shifting width. There is a configuration like this.
この構成では、速変操作レバーによつて駆動側
摺動プーリ片を摺動させて変速を行う際、第1図
の如く一直線の変速レバーガイド溝の変速域中央
(A位置)で駆動側と従動側のスプリングの押圧
力がバランスして変速操作レバーの操作荷重が零
となり、操縦者は、低速から高速に変速操作を行
う際、この変速操作工程中に変速操作レバーに加
える操作が低速から中速までは該変速操作レバー
が自動的に移動するのを抑制しながら行い中速か
ら高速までは該変速操作レバーに力を加えて行う
という感覚的不具合を経験するものであつた。
又、変速操作レバーで駆動側摺動プーリ片を操作
する連動機構に組付あるいは加工誤差等からくる
「ガタ」が在るときには、変速操作レバーは、前
記駆動側及び従動側のスプリングによる押圧力が
バランスして零となる高・低変速域の中央付近に
おいて「遊び」を生じ、変速途中で変速操作レバ
ーの動きに比例した変速状態を得ることができな
いという欠点を有していた。さらに、不測の事態
で変速操作レバーを「停止」の位置にする場合に
は、スプリングの押圧力に抗して変速操作レバー
を変速域の中央位置から「停止」位置まで多く移
動させねばならず俊敏に「停止」とすることがで
きないばかりか、変速操作レバーの停止状態への
固定が外れた場合には、変速操作レバーが中速域
に向かつて移動して中速での伝動となるため非常
に危険であつた。 With this configuration, when the speed change operation lever slides the drive side sliding pulley piece to change speed, the drive side and The pressing force of the driven side spring is balanced, and the operating load on the gear shift operating lever becomes zero, so that when the operator changes gears from low to high speed, the operation applied to the gear shift operating lever during this gear shifting process changes from low to high speed. The user experienced a sensory inconvenience in that the automatic movement of the shift operating lever was suppressed until medium speeds were reached, and force was applied to the shift operating lever from middle to high speeds.
In addition, if there is play in the interlocking mechanism that operates the drive-side sliding pulley piece with the speed-change operation lever due to assembly or machining errors, the speed-change operation lever will not be able to handle the pressing force caused by the drive-side and driven-side springs. This has the disadvantage that "play" occurs near the center of the high and low gear shift ranges where the balance becomes zero, and it is not possible to obtain a shift state proportional to the movement of the shift control lever during the shift. Furthermore, if the shift control lever is to be moved to the "stop" position in an unexpected situation, the shift control lever must be moved from the center position of the shift range to the "stop" position by a large distance against the pressing force of the spring. Not only is it not possible to quickly stop the transmission, but if the shift control lever is no longer fixed to the stopped state, the shift control lever will move toward the medium speed range and transmission will occur at medium speed. It was extremely dangerous.
(問題点を解決するための手段) そこで、本考案では、次の如く構成した。(Means for solving problems) Therefore, the present invention is constructed as follows.
すなわち、固定プーリ片1と摺動プーリ片2と
からなる駆動側変速用プーリ3と、固定プーリ片
4と該固定プーリ片4に対してスプリング9で押
圧した摺動プーリ片5とからなる従動側変速プー
リ6との間に、Vベルトを巻き掛け、駆動側の摺
動プーリ片2にリンク機構15で連結した変速操
作レバー10で該摺動プーリ片2を摺動操作して
変速するベルト式無段変速装置において、駆動側
の摺動プーリ片2を固定プーリ片1側へ押圧する
補助スプリング8を設け、従動側変速プーリ6が
最大有効ピツチ径となる位置へ前記スプリング9
が摺動プーリ片5を押圧した状態で略バランスす
るように該補助スプリング8の押圧力を設定した
ことを特徴とするベルト式無段変速装置の構成と
する。 That is, a driving-side speed change pulley 3 consisting of a fixed pulley piece 1 and a sliding pulley piece 2, and a driven pulley consisting of a fixed pulley piece 4 and a sliding pulley piece 5 pressed against the fixed pulley piece 4 by a spring 9. A V-belt is wound around the side speed change pulley 6, and the speed is changed by slidingly operating the sliding pulley piece 2 with a speed change operation lever 10 connected to the sliding pulley piece 2 on the drive side by a link mechanism 15. In the continuously variable transmission, an auxiliary spring 8 is provided to press the sliding pulley piece 2 on the driving side toward the fixed pulley piece 1, and the spring 9 is moved to the position where the driven side variable speed pulley 6 has the maximum effective pitch diameter.
The belt type continuously variable transmission is characterized in that the pressing force of the auxiliary spring 8 is set so that the auxiliary spring 8 is substantially balanced when the sliding pulley piece 5 is pressed.
(考案の作用及び効果)
変速操作レバー10で駆動側変速用プーリ3の
摺動プーリ片2を固定プーリ片1へ近づけて増速
する場合には、補助スプリング8の作用で操作力
が軽減されることになる。(Operations and Effects of the Invention) When increasing the speed by moving the sliding pulley piece 2 of the driving side speed change pulley 3 closer to the fixed pulley piece 1 using the speed change operation lever 10, the operation force is reduced by the action of the auxiliary spring 8. That will happen.
又、操縦者が低速域から高速域に変速操作レバ
ー10の操作を行う際、変速操作レバー10に力
を徐々に加えていくことになり、前記の如き変速
操作レバー10の操作感覚の不具合を解消できる
と共に、低速域から高速域への変速操作レバー1
0の移動時、変速操作レバー10の動きに比例し
た変速比を得ることが可能となる。さらに、変速
操作レバー10の固定が外れたときには、スプリ
ング8,9の摺動プーリ2,5への押圧力が均衡
する従動側変速プーリ6の有効ピツチ径が最大つ
まり最低速位置に向かつて自動的に移動して最低
速で安定することになり、又、変速操作レバー1
0の高速域から低速域への移動操作をほとんど力
を加えることなく俊敏に行えるため、コンバイン
あるいは農用運搬車等の走行装置への動力伝達機
構に本考案のベルト式無段変速装置を利用した場
合には、安全な走行を行える。 Furthermore, when the operator operates the gear shift operating lever 10 from a low speed range to a high speed range, force is gradually applied to the gear shifting operating lever 10, which prevents the above-mentioned problem with the operating sensation of the gear shifting operating lever 10. In addition to being able to eliminate the problem, there is also a shift control lever 1 that changes from low speed range to high speed range.
0, it becomes possible to obtain a speed change ratio proportional to the movement of the speed change operation lever 10. Furthermore, when the speed change operation lever 10 is released, the effective pitch diameter of the driven speed change pulley 6, where the pressing forces of the springs 8 and 9 on the sliding pulleys 2 and 5 are balanced, reaches the maximum, that is, the lowest speed position, and the automatic The shift control lever 1 will be stable at the lowest speed.
The belt-type continuously variable transmission device of this invention is used in the power transmission mechanism to the traveling equipment of combine harvesters or agricultural transport vehicles, in order to be able to move quickly from the high-speed range to the low-speed range without applying much force. In this case, you can drive safely.
(実施例)
次に、本考案の一実施例を図面に基づいて説明
する。3は駆動側変速用プーリで、原動機11の
出力軸12に設けられ、又、6は従動側変速用プ
ーリで、走行部ミツシヨン13の入力軸14に設
けられている。(Example) Next, an example of the present invention will be described based on the drawings. Reference numeral 3 designates a driving side speed change pulley, which is provided on the output shaft 12 of the prime mover 11, and 6 represents a driven side speed change pulley, which is provided on the input shaft 14 of the traveling section transmission 13.
前記駆動側変速用プーリ3は、出力軸12に装
着した固定プーリ片1と軸方向に摺動自在に嵌装
された摺動プーリ片2とから構成されている。こ
の摺動プーリ片2は補助スプリング8により常時
固定プーリー片1側へ押圧付勢されており、摺動
プーリ片2に外嵌したシフタ14をリンク機構1
5を介して変速操作レバー10に連結し、この変
速操作レバー10で操作することにより、摺動プ
ーリ片2が軸方向に摺動するのである。 The drive-side speed change pulley 3 is composed of a fixed pulley piece 1 attached to the output shaft 12 and a sliding pulley piece 2 fitted so as to be slidable in the axial direction. This sliding pulley piece 2 is always pressed toward the fixed pulley piece 1 side by an auxiliary spring 8, and the shifter 14 fitted on the sliding pulley piece 2 is moved to the link mechanism 1.
The sliding pulley piece 2 is connected to a speed change operating lever 10 via a gear shift lever 5, and is operated by the speed change operating lever 10, thereby causing the sliding pulley piece 2 to slide in the axial direction.
16は変速操作レバー10のガイド板であつ
て、変速操作レバー10を高・低変速域内所定の
位置にしたとき、摺動プーリ片2からの反力で変
速操作レバー10が低速側へ戻されないように引
つ掛けるための係止凹部20がガイド溝17に設
けられている。 Reference numeral 16 denotes a guide plate for the speed change operation lever 10, which prevents the speed change operation lever 10 from returning to the low speed side due to the reaction force from the sliding pulley piece 2 when the speed change operation lever 10 is placed at a predetermined position within the high/low speed range. A locking recess 20 for hooking is provided in the guide groove 17.
前記従動側変速プーリ6は、入力軸14に装着
した固定プーリ片4と入力軸14の軸方向に摺動
自在に嵌装された摺動プーリ片5とから構成され
ている。この摺動プーリ片5はスプリング9によ
り常時固定プーリ片4側へ押圧付勢されている。 The driven speed change pulley 6 is composed of a fixed pulley piece 4 attached to the input shaft 14 and a sliding pulley piece 5 fitted so as to be slidable in the axial direction of the input shaft 14. This sliding pulley piece 5 is always urged toward the fixed pulley piece 4 by a spring 9.
この従動側のスプリング9は、原動機11の動
力伝達に応じた弾力を有すべく設定されたもの
で、Vベルト7の巻き掛け伝動時において、必要
伝動トルク時に摺動プーリ片5の摺動が起こらな
い程度に強い弾力を有している。 The spring 9 on the driven side is set to have an elasticity corresponding to the power transmission of the prime mover 11, and when the V-belt 7 is wrapped around and transmitted, the sliding pulley piece 5 will not slide when the required transmission torque is applied. It has strong elasticity to the extent that it does not occur.
そして、前記駆動側の補助スプリング8はこの
従動側のスプリング9よりも適宜弱く設定された
もので、変速操作レバー10が最低速位置つまり
駆動側変速用プーリ3の有効ピツチ径が最小で従
動側変速プーリ6の有効ピツチ径が最大におい
て、両スプリング8,9の摺動プーリ2,5への
それぞれの押圧力が均衡するようにバネ力を設定
している。すなわち、最低速位置(第3図のB位
置)で変速操作レバー10の操作荷重が零とな
る。尚、適宜の変速比に設定した場合には駆動側
摺動プーリ片2の最小有効ピツチ径への摺動は、
変速操作レバー10を前記ガイド溝17の凹部2
0で固定することで阻止される。 The auxiliary spring 8 on the drive side is set to be suitably weaker than the spring 9 on the driven side, so that the shift operation lever 10 is at the lowest speed position, that is, when the effective pitch diameter of the drive side shift pulley 3 is at its minimum, it is on the driven side. The spring force is set so that the respective pressing forces of the springs 8 and 9 on the sliding pulleys 2 and 5 are balanced when the effective pitch diameter of the speed change pulley 6 is at its maximum. That is, at the lowest speed position (position B in FIG. 3), the operating load on the shift operating lever 10 becomes zero. In addition, when setting the appropriate gear ratio, the sliding of the drive side sliding pulley piece 2 to the minimum effective pitch diameter is as follows:
The gear shift operation lever 10 is inserted into the recess 2 of the guide groove 17.
This can be prevented by fixing it to 0.
第2図は、変速操作レバー10が最低速位置に
ある状態を示している。今、変速操作レバー10
を高速側〔図中矢印イ方向〕に移動させれば摺動
プーリ片2はリンク機構15を介して駆動側変速
用プーリ3のベルト巻き掛け有効径を増加させる
方向〔図中矢印ロ方向〕へ摺動する。このとき従
動側の摺動プーリ片5はVベルト7の張力による
Vベルトの側圧でスプリング9の押圧力に抗して
矢印ハ方向へ摺動し、従動側変速用プーリ6のベ
ルト巻き掛け有効径が減少するので、走行部ミツ
シヨン13の入力軸14の回転が増大し、機体の
走行が増速する。ここで、補助スプリング8は変
速操作レバー10の高速側への移動時において、
移動操作荷重を軽減する役割を果たすことにな
る。そして、この高速域にある変速操作レバー1
0を低速側に移動させれば、今度は前記とは逆
に、駆動側変速用プーリ3のベルト巻き掛け有効
径が減少し、且つ、従動側変速プーリ6のベルト
巻き掛け有効径が増加して、機体の走行が減速す
ることになる。変速操作レバー10を補助スプリ
ング8の押圧力に抗して低速位置からさらに停止
位置へ移動させて駆動プーリ片2と固定プーリ片
1とが形成する溝幅Wを大きくすれば、Vベルト
7がベアリング18上に乗ることによつてVベル
ト7による動力伝達が不能となる。すなわち、こ
の位置かVベルト7による動力伝動を断つた状態
である。 FIG. 2 shows a state in which the speed change operating lever 10 is at the lowest speed position. Now, shift control lever 10
If the sliding pulley piece 2 is moved to the high-speed side [in the direction of arrow A in the figure], the sliding pulley piece 2 increases the belt-wrapping effective diameter of the drive-side transmission pulley 3 via the link mechanism 15 [in the direction of arrow B in the figure]. Slide to. At this time, the sliding pulley piece 5 on the driven side slides in the direction of arrow C against the pressing force of the spring 9 due to the side pressure of the V belt due to the tension of the V belt 7, and the belt wrapping around the driven side speed change pulley 6 becomes effective. Since the diameter decreases, the rotation of the input shaft 14 of the traveling part transmission 13 increases, and the traveling speed of the aircraft body increases. Here, when the shift operation lever 10 moves to the high speed side, the auxiliary spring 8
This will play a role in reducing the moving operation load. And the gear shift operation lever 1 in this high speed range
0 to the low speed side, the effective belt-wrapping diameter of the drive-side speed change pulley 3 decreases, and the effective belt-wrap diameter of the driven-side speed change pulley 6 increases, contrary to the above. This will cause the aircraft to slow down. By moving the speed change operation lever 10 from the low speed position to the stop position against the pressing force of the auxiliary spring 8 and increasing the groove width W formed by the drive pulley piece 2 and the fixed pulley piece 1, the V-belt 7 can be By riding on the bearing 18, power transmission by the V-belt 7 becomes impossible. That is, at this position, power transmission by the V-belt 7 is cut off.
前記の如く、高速域から低速域への変速操作レ
バー10の移動は、強い弾力を有するスプリング
9の摺動プーリ片5を押圧する力を利用して行わ
れるため、変速操作レバー10の変速操作力を必
要とせず、変速操作レバー10が凹部20から外
れた場合には、直ちに低速状態に変速されるので
安全である。 As described above, the shift operation lever 10 is moved from a high speed range to a low speed range by using the force of the spring 9, which has strong elasticity, pressing the sliding pulley piece 5. When the shift operation lever 10 comes out of the recess 20, the shift is immediately shifted to a low speed state without requiring any force, so it is safe.
第1図は従来の無段変速装置における変速操作
レバーのガイド溝を示す平面図、第2図はこの考
案に係る無段変速装置の一実施例を示す側断面
図、第3図は第2図における拡大P矢視図であ
る。
1……駆動側固定プーリ片、2……駆動側摺動
プーリ片、3……駆動側変速用プーリ、4……従
動側固定プーリ片、5……従動側摺動プーリ片、
6……従動側変速プーリ、7……Vベルト、8…
…補助スプリング、9……スプリング、10……
変速操作レバー、15……リンク機構。
FIG. 1 is a plan view showing a guide groove of a speed change operation lever in a conventional continuously variable transmission, FIG. 2 is a side sectional view showing an embodiment of the continuously variable transmission according to the invention, and FIG. It is an enlarged view in the direction of arrow P in the figure. 1... Drive side fixed pulley piece, 2... Drive side sliding pulley piece, 3... Drive side speed change pulley, 4... Driven side fixed pulley piece, 5... Driven side sliding pulley piece,
6... Driven side speed change pulley, 7... V-belt, 8...
...Auxiliary spring, 9...Spring, 10...
Gear shift operation lever, 15... link mechanism.
Claims (1)
動側変速用プーリ3と、固定プーリ片4と該固定
プーリ片4に対してスプリング9で押圧した摺動
プーリ片5とからなる従動側変速プーリ6との間
に、Vベルトを巻き掛け、駆動側の摺動プーリ片
2にリンク機構15で連結した変速操作レバー1
0で該摺動プーリ片2を摺動操作して変速するベ
ルト式無段変速装置において、駆動側の摺動プー
リ片2を固定プーリ片1側へ押圧する補助スプリ
ング8を設け、従動側変速プーリ6が最大有効ピ
ツチ径となる位置へ前記スプリング9が摺動プー
リ片5を押圧した状態で略バランスするように該
補助スプリング8の押圧力を設定したことを特徴
とするベルト式無段変速装置。 A driving side transmission pulley 3 consisting of a fixed pulley piece 1 and a sliding pulley piece 2, and a driven side transmission consisting of a fixed pulley piece 4 and a sliding pulley piece 5 pressed against the fixed pulley piece 4 by a spring 9. A speed change operation lever 1 has a V-belt wrapped around it and a pulley 6, and is connected to a sliding pulley piece 2 on the driving side by a link mechanism 15.
In a belt type continuously variable transmission device that changes speed by slidingly operating the sliding pulley piece 2 at 0, an auxiliary spring 8 is provided to press the driving side sliding pulley piece 2 toward the fixed pulley piece 1 side, and the driven side speed change is performed. The belt type continuously variable transmission is characterized in that the pressing force of the auxiliary spring 8 is set so that the spring 9 presses the sliding pulley piece 5 to a position where the pulley 6 has a maximum effective pitch diameter and is approximately balanced. Device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14432983U JPS6051345U (en) | 1983-09-17 | 1983-09-17 | Belt type continuously variable transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14432983U JPS6051345U (en) | 1983-09-17 | 1983-09-17 | Belt type continuously variable transmission |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6051345U JPS6051345U (en) | 1985-04-11 |
JPH0113875Y2 true JPH0113875Y2 (en) | 1989-04-24 |
Family
ID=30321883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14432983U Granted JPS6051345U (en) | 1983-09-17 | 1983-09-17 | Belt type continuously variable transmission |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6051345U (en) |
-
1983
- 1983-09-17 JP JP14432983U patent/JPS6051345U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6051345U (en) | 1985-04-11 |
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