JPS58102856A - V-pulley for belt type stepless change gear - Google Patents

V-pulley for belt type stepless change gear

Info

Publication number
JPS58102856A
JPS58102856A JP12105782A JP12105782A JPS58102856A JP S58102856 A JPS58102856 A JP S58102856A JP 12105782 A JP12105782 A JP 12105782A JP 12105782 A JP12105782 A JP 12105782A JP S58102856 A JPS58102856 A JP S58102856A
Authority
JP
Japan
Prior art keywords
pulley
oil
hydraulic
driven
hydraulic cylinder
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
JP12105782A
Other languages
Japanese (ja)
Inventor
Torao Hattori
服部 虎男
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP12105782A priority Critical patent/JPS58102856A/en
Publication of JPS58102856A publication Critical patent/JPS58102856A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32Friction members
    • F16H55/52Pulleys or friction discs of adjustable construction
    • F16H55/56Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

PURPOSE:To increase the durability of a bearing by a method wherein a thrust load, acting between the half body of a fixed pulley and a hydraulic cylinder, is transmitted to and supported by a pulley shaft. CONSTITUTION:The hydraulic cylinder 50 for operating the half body 47 of a movable pulley is connected by the aft wall plate 50a thereof to a driving pulley 45 through a retaining ring 52 and is connected integally to the half body 44 of the fixed pulley also. According to this connection, the thrust load, acting between the half body 44 of the fixed pulley and the hydraulic cylinder 50 in accompanied with the hydraulic operation of a piston 49, may be transmitted to and supported by the driving pulley shaft 45. As a result, the load of a bearing 51, supporting the hydraulic cylinder 50 rotatably, is reduced and the durability of the bearing may be increased.

Description

【発明の詳細な説明】 ト式無段変速機、特にケーシングにベアリングを介して
支承されるプーリ軸を固設された固定プーリ半体と、プ
ーリ軸上に設けられた可動プーリ半休と、可動プーリ半
体を固定プーリ半体に対して進退させて有効半径を調節
すべく、プーリ軸上に設けられた油圧式作動装置とを備
え、その油圧式作動装置を可動プーリ半体に固着された
ピストンと、ピストンを収容する油圧シリンダとより構
成したものに関する。
[Detailed description of the invention] A continuously variable transmission, in particular, a fixed pulley half having a pulley shaft fixedly supported by a casing via a bearing, a movable pulley half provided on the pulley shaft, and a movable pulley half. A hydraulic actuator is provided on the pulley shaft to move the pulley half forward and backward relative to the fixed pulley half to adjust the effective radius, and the hydraulic actuator is fixed to the movable pulley half. It relates to a piston and a hydraulic cylinder that accommodates the piston.

上記Vプーリにおいては、油圧式作動装置の油圧作動に
伴い固定プーリ半体と油圧シリンダ間にスラスト荷重が
作用し、そのスラスト荷重がベアリングに負荷として伝
達されるためその耐久性が損われるおそれがある。
In the above V-pulley, a thrust load acts between the fixed pulley half and the hydraulic cylinder due to the hydraulic operation of the hydraulic actuator, and the thrust load is transmitted to the bearing as a load, which may reduce its durability. be.

本発明は上記に鑑み、固定プーリ半体と油圧シリンダ間
に作用するスラスト荷重をプーリ軸に伝達、支承させる
ようにして、ベアリングの耐久性を向上させるようにし
た前記Vプーリを提供することを目的とする。
In view of the above, the present invention provides the above-mentioned V-pulley, which transmits and supports the thrust load acting between the stationary pulley half and the hydraulic cylinder to the pulley shaft, thereby improving the durability of the bearing. purpose.

以下、図面により本発明を自動二輪車に採用しだ一実施
例について説明すると、先ず第1図において、自動二輪
車のパワーユニツ)Puは、エンジンE1発進りラッチ
Sc,ベルト式無段変速機Tm及び歯車式補助変速機T
aよりなり、これらは図示しない車体に支持されるケー
シングC内に構成される。
Hereinafter, an embodiment in which the present invention is applied to a motorcycle will be explained with reference to the drawings. First, in FIG. Type auxiliary transmission T
a, which are constructed within a casing C supported by a vehicle body (not shown).

ケーシングCは第2図に示すように、エンジンEのクラ
ンク軸1のクランク部及び補助変速機Taを収容する主
ケースC1と、無段変速機Tmを収容する補助ケースC
2と、その補助ケースC2の外側面を閉鎖するカバーC
,とに分割されている。
As shown in FIG. 2, the casing C includes a main case C1 that accommodates the crank part of the crankshaft 1 of the engine E and the auxiliary transmission Ta, and an auxiliary case C that accommodates the continuously variable transmission Tm.
2, and a cover C that closes the outer surface of the auxiliary case C2.
It is divided into , and.

また、クランク軸1その他、パヮー゛ユニットPu中の
各種回転軸は、パワーユニットPuの後方で図示しない
車体に軸支される後輪Wrの軸線とすべて平行に配置さ
れ、パワーユニツ)Puの出力軸、即ち補助変速機Ta
の出力軸141がチェン伝動装置Mを介して後輪Wrを
1動するようになっている。
In addition, the crankshaft 1 and other various rotating shafts in the power unit Pu are all arranged parallel to the axis of the rear wheel Wr that is supported by the vehicle body (not shown) behind the power unit Pu, and the output shaft of the power unit Pu, That is, the auxiliary transmission Ta
The output shaft 141 of the rear wheel Wr is configured to move the rear wheel Wr by one movement via a chain transmission device M.

発進クラッチSC及び無段変速機Tmはいずれも油圧作
動式に構成される。それらに作動油を供給するだめに、
クラッチ弁Vcより延出した制御油路Lcが発進クラッ
チScに、また工/ジ/Eに駆動される油圧ポンプPか
ら延出した第1,第2給油路L,、L2が無段変速機T
mの駆動、従動部にそれぞれ接続される。
The starting clutch SC and the continuously variable transmission Tm are both configured to be hydraulically operated. In order to supply hydraulic oil to them,
A control oil passage Lc extending from the clutch valve Vc is connected to the starting clutch Sc, and first and second oil supply passages L, L2 extending from the hydraulic pump P driven by the engine/engine/E are connected to the continuously variable transmission. T
are connected to the driving and driven parts of m.

同、第1図中、vrは油圧ポンプPのリリーフ弁、Rは
ケーシングCの底部に形成される油溜である。
In FIG. 1, vr is a relief valve of the hydraulic pump P, and R is an oil reservoir formed at the bottom of the casing C.

パワーユニツ)Puの各部の構成を第2.3図により順
次説明する。
The configuration of each part of the power unit (Pu) will be explained in sequence with reference to Fig. 2.3.

先ず、発進クラッチSCであるが、それはクランク軸1
を支承する最古側の軸受2の外側に隣接してクランク軸
1上に設けられる。この発進クラッチScはクランク軸
1にスプライン結合3されたクラッチアウタ4と、後述
する駆動Vプーリ40の固定プーリ半体44と一体に形
成されたクラッチインナ5とを有し、これらクラッチア
ウタ及びインナ4,5間には、クラッチアウタ4に摺動
自在にスプライン嵌合される複数枚の駆動摩擦板6と、
クラッチインナ5に摺動自在にスプライン嵌合される複
数枚の被動摩擦板7とが各枚交互に重合して介装される
と共に、最外側位置の駆動摩擦板6の外方移動を拘束す
る受圧環8がクラッチアウタ4に係止される。この受圧
環8と反対側でクラッチアウタ4には油圧シリンダ9が
形成されておシ、このシリンダ9には最内側位置の駆動
摩擦板6に皿状の緩衝ばね10を挾んで対向するピスト
ン11が摺合されている。このピストン11は、クラッ
チインナ5の内側に配置された戻しばね12により後退
方向、即ち摩擦板6,7群から離れる方向に弾圧される
。油圧シリンダ9の油圧室13には前記制御油路Lcか
らクランク軸1に形成した油路14を通して作動油が供
給されるようになっている。
First, there is the starting clutch SC, which is connected to the crankshaft 1.
It is provided on the crankshaft 1 adjacent to the outside of the oldest bearing 2 that supports the crankshaft. This starting clutch Sc has a clutch outer 4 spline-coupled to the crankshaft 1, and a clutch inner 5 integrally formed with a fixed pulley half 44 of a drive V pulley 40, which will be described later. Between 4 and 5 are a plurality of drive friction plates 6 which are slidably spline fitted to the clutch outer 4;
A plurality of driven friction plates 7 are slidably spline-fitted to the clutch inner 5 and are interposed by alternately overlapping each other, and restrain the outward movement of the driving friction plate 6 at the outermost position. The pressure receiving ring 8 is locked to the clutch outer 4. A hydraulic cylinder 9 is formed in the clutch outer 4 on the opposite side from the pressure receiving ring 8, and the cylinder 9 has a piston 11 facing the drive friction plate 6 located at the innermost position with a disc-shaped buffer spring 10 sandwiched therebetween. are rubbed together. This piston 11 is biased by a return spring 12 arranged inside the clutch inner 5 in a backward direction, that is, in a direction away from the friction plates 6 and 7 group. Hydraulic oil is supplied to the hydraulic chamber 13 of the hydraulic cylinder 9 from the control oil passage Lc through an oil passage 14 formed in the crankshaft 1.

而して、油圧室13に高圧の作動油を供給すれば、ピス
トン11はその油圧を受けて戻しばね12を圧縮しなが
ら前進し、駆動及び被動摩擦板6゜7群を受圧環8に対
して押圧することにより両摩擦板6.7間を半クラツチ
状態を経て摩擦連結することができる。このクラッチ接
続状態では、クランク軸1からクラッチアウタ4に伝達
される動力は両摩擦板6.7群を介してクラッチインナ
5に伝達し、そして次段の無段変速機Tmへと伝達れば
、ピストン11は戻しばね12の弾圧力により後退する
ので、両摩擦板6.7間の摩擦連結は解かれ(クラッチ
遮断状態)、上記の動力伝達は休止する。
When high-pressure hydraulic oil is supplied to the hydraulic chamber 13, the piston 11 receives the hydraulic pressure and moves forward while compressing the return spring 12, causing the driving and driven friction plates 6.7 group to move against the pressure receiving ring 8. By pressing the friction plates 6 and 7 together, the friction plates 6 and 7 can be frictionally connected through a half-clutch state. In this clutch connected state, the power transmitted from the crankshaft 1 to the clutch outer 4 is transmitted to the clutch inner 5 via both friction plates 6 and 7, and then to the next continuously variable transmission Tm. Since the piston 11 is moved backward by the elastic force of the return spring 12, the frictional connection between the two friction plates 6, 7 is released (clutch disengaged state), and the above-mentioned power transmission is stopped.

発進クラッチScは両摩擦板6,7を作動油により冷却
する湿式を採用している。ところで、両摩擦板6.7に
供給する冷却油が過多であれば、クラッチ遮断時には冷
却油の粘性に起因した両摩擦板6.7間の引摺り現象を
起こし、またクラッチ接続時には両摩擦板6,1間に滑
りが生じ易くなる。反対に冷却油が過少であれば、摩擦
熱を多量に発する半クラツチ時に各摩擦板6,7が過熱
する嫌いがある。したがって、冷却油の供給量は、クラ
ッチ遮断時及θ接続時には零若しくは僅少に、また半ク
ラツチ時には多量にそれぞれ制御することが要求され、
そのような制御のために流量調節弁15が設けられる。
The starting clutch Sc employs a wet type in which both friction plates 6 and 7 are cooled by hydraulic oil. By the way, if too much cooling oil is supplied to both friction plates 6.7, a dragging phenomenon will occur between both friction plates 6.7 due to the viscosity of the cooling oil when the clutch is disengaged, and when the clutch is connected, both friction plates 6.7 6. Slippage is likely to occur between 1 and 6. On the other hand, if there is too little cooling oil, each friction plate 6, 7 tends to overheat when the clutch is half-engaged, which generates a large amount of frictional heat. Therefore, it is necessary to control the amount of cooling oil supplied to zero or a small amount when the clutch is disengaged and θ is engaged, and to a large amount when the clutch is half-engaged.
A flow control valve 15 is provided for such control.

流量調節弁15は円筒形をなしていて、クランク軸1の
前記油路14内に摺合され、該弁15の左端面には油路
14の油圧が、また右端面には大気圧と戻しばね16の
弾発力とがそれぞれ作用するようになっている。流量調
節弁15は油路14と連通する弁孔17を有し、該弁1
5が所定の右動位置に移動したとき上記弁孔17と連通
ずる、オリフィス18付油孔19がクランク軸1に穿設
され、またその油孔19をスプライン結合部3を介して
クラッチインナ5の内側に常時連通させる油孔20がク
ラッチアウタ4に穿設される。
The flow rate regulating valve 15 has a cylindrical shape and is slid into the oil passage 14 of the crankshaft 1. The left end face of the valve 15 receives the oil pressure of the oil passage 14, and the right end face receives atmospheric pressure and a return spring. 16 elastic forces act on each of them. The flow control valve 15 has a valve hole 17 that communicates with the oil passage 14, and the valve 1
An oil hole 19 with an orifice 18 is drilled in the crankshaft 1 and communicates with the valve hole 17 when the clutch inner 5 moves to a predetermined rightward movement position. An oil hole 20 is drilled in the clutch outer 4 so that the oil hole 20 is always in communication with the inside of the clutch outer 4.

而して、油路14内が低圧のクラッチ遮断時には調節弁
15は戻しばね16の力で左動限に保持されるので、弁
孔17と油孔19とは図示のように連通を断たれ、若し
くはその連通を適当に絞られ、これにより油路14から
発進クラッチscへの冷却油の供給量は零若しくは僅少
に調節される。
When the clutch is disconnected due to low pressure in the oil passage 14, the control valve 15 is held at the leftmost limit of movement by the force of the return spring 16, so that the valve hole 17 and the oil hole 19 are disconnected from each other as shown in the figure. , or the communication thereof is appropriately throttled, whereby the amount of cooling oil supplied from the oil passage 14 to the starting clutch sc is adjusted to zero or a small amount.

油路14内の油圧が半クラツチ状態をもたらすまでに上
昇すると、その油圧を受けて調節弁15は戻しばね16
を圧縮しながら右動し、弁孔17を油孔19に連通させ
、これにより油路14から弁孔17、油孔19,20を
通して発進クラッチScに冷却油が充分に供給される。
When the oil pressure in the oil passage 14 rises to the point where it brings about a half-clutch state, the control valve 15 receives the oil pressure and releases the return spring 16.
is moved to the right while being compressed, and the valve hole 17 is communicated with the oil hole 19, whereby cooling oil is sufficiently supplied from the oil passage 14 to the starting clutch Sc through the valve hole 17 and the oil holes 19, 20.

このときの冷却油の最大流量はオリフィス18により規
制される。
The maximum flow rate of the cooling oil at this time is regulated by the orifice 18.

さらに、油路14内の油圧がクラッチ接続状態をもたら
すまでに上昇して調節弁15が更に右動すると、弁孔1
7と油孔19とは再び連通を断たれ、若しくはその連通
を適当に絞られ、これにより冷却油の供給量は再び零若
しくは僅少に調節される。
Furthermore, when the oil pressure in the oil passage 14 rises to the point where the clutch is engaged and the control valve 15 moves further to the right, the valve hole 1
7 and the oil hole 19 are again cut off, or their communication is appropriately throttled, whereby the supply amount of cooling oil is again adjusted to zero or a small amount.

第1図において、上記発進クラッチScを操作するため
のクラッチ弁Vcについて説明すると、一端が閉塞され
たシリンダ状の弁面25には戻しばね26、スプール弁
27、調圧ばね28及び押圧板29が順次挿入され、最
外側の抑圧板29には、固定の支軸30に中央部を支持
させた作動レバー31の一端が連接され、その他端には
操向ハンドルHに付設されたクラッチレバ−32に連な
る操作ワイヤ33と作動ばね34とが接続される。
In FIG. 1, to explain the clutch valve Vc for operating the starting clutch Sc, a cylindrical valve surface 25 with one end closed includes a return spring 26, a spool valve 27, a pressure regulating spring 28, and a pressing plate 29. are inserted one after another, and one end of an operating lever 31 whose central portion is supported by a fixed support shaft 30 is connected to the outermost suppression plate 29, and a clutch lever attached to the steering handle H is connected to the other end. An operating wire 33 connected to the operating wire 32 and an operating spring 34 are connected.

その作動ばね34は前記調圧ばね28よりばね力が強く
、クラッチレバ−32の解放に従い作動レバー31及び
押圧板29を介して調圧ばね2Bを押圧し、そのセット
荷重を増加させることができる。
The operating spring 34 has a stronger spring force than the pressure regulating spring 28, and as the clutch lever 32 is released, it can press the pressure regulating spring 2B via the operating lever 31 and the pressing plate 29, thereby increasing its set load. .

弁面25は、調圧ばね28側から並んでその内壁に開口
する第1〜第4ポート35、〜354を有し、第1ボー
1−35.は油溜Rと連通し、第2ボート352から制
御油路Lcが延出され、第3ポート353は油圧ポンプ
Pと連通し、また第4ポート354はオリフィス36を
介して制御油路り、cと連通ずると共に、弁面25内の
戻しばね26を収容する反力油圧室38と連通する。他
方、スプール弁27は、前記第2ボート35.と第1ポ
ート35+または第3ポート35.との連通を切換え得
る環状溝a9を有する。
The valve surface 25 has first to fourth ports 35, to 354 that are lined up from the pressure regulating spring 28 side and open to the inner wall thereof, and the first ports 1 to 35. communicates with the oil reservoir R, a control oil passage Lc extends from the second boat 352, a third port 353 communicates with the hydraulic pump P, and a fourth port 354 communicates with the control oil passage through the orifice 36. c and a reaction hydraulic chamber 38 that accommodates the return spring 26 within the valve surface 25. On the other hand, the spool valve 27 is connected to the second boat 35. and the first port 35+ or the third port 35. It has an annular groove a9 that can switch the communication with.

浦して、第1図の状態のように、クラッチレ・;−32
を操向ノ・7ドルH側に引き寄せることによシ、作動ば
ね34の力に抗して作動レバー31を押圧板29から充
分に後退させれば、スプール弁27は戻しばね26によ
り右動されて、第3ボート35.を閉じると共に第1及
び第2ボー)35.。
Then, as in the state shown in Figure 1, the clutch lever is
When the actuating lever 31 is sufficiently retreated from the pressing plate 29 against the force of the actuating spring 34, the spool valve 27 is moved to the right by the return spring 26. and the third boat 35. (1st and 2nd bow) 35. .

35、間を連通させる。その結果、発進クラッチScの
油圧シリンダ9内の圧力は油溜Rに解放されるので、発
進クラッチScは遮断状態となる。
35. Make the spaces communicate. As a result, the pressure in the hydraulic cylinder 9 of the starting clutch Sc is released to the oil reservoir R, so the starting clutch Sc becomes in a disconnected state.

クラッチレバ、−32の操作力を徐々に解放していき、
抑圧板29が“作動ばね34の力により調圧ばね28を
押圧していくと、スプール弁27は左動して第1ポー)
’35.を閉じると共に第2及び第3ボー)352,3
5.間を連通させるので、油圧ポンプPの吐出油が制御
油路Lcに供給される。これに伴い制御油路Lcの油圧
が上昇すると、その油圧はオリフィス36を経て反力油
圧室3Bに導入されるため、その油圧による押圧力と調
圧ばね2Bのセット荷重とが平衡するところまでスプー
ル弁27は右方へ押し戻されるっしたがって、クラッチ
レバ−32の戻し動作に伴う調圧ばね2Bのセット荷重
の増加に応じて制御油路Lcの油圧、即ち発進クラッチ
Scの接続油圧を上昇させることができる。
Gradually release the clutch lever -32 operating force,
When the suppressing plate 29 presses the pressure regulating spring 28 by the force of the operating spring 34, the spool valve 27 moves to the left and reaches the first port.
'35. and close the second and third bows) 352,3
5. Since they communicate with each other, the oil discharged from the hydraulic pump P is supplied to the control oil path Lc. When the oil pressure in the control oil passage Lc rises accordingly, the oil pressure is introduced into the reaction oil pressure chamber 3B through the orifice 36, until the pressing force due to the oil pressure and the set load of the pressure regulating spring 2B are balanced. Since the spool valve 27 is pushed back to the right, the oil pressure of the control oil passage Lc, that is, the connection oil pressure of the starting clutch Sc is increased in accordance with the increase in the set load of the pressure regulating spring 2B due to the return operation of the clutch lever 32. be able to.

このようなりラッチ弁Vcを用いると、クラッチレバ−
32の操作力を軽く設定しても、それに殆ど関係なく発
進クラッチ3cの接続油圧を充分に大きく設定すること
ができ、これにより発進クラッチScの小型化が可能と
なり、また前述のように、発進クラッチSCを、パワー
ユニットPu中、最も回転数が高くてトルクの低いクラ
ンク軸1上に設けることにより、その小型化は更に促進
される。
When using the latch valve Vc like this, the clutch lever
Even if the operating force of 32 is set lightly, the connection hydraulic pressure of the starting clutch 3c can be set sufficiently large regardless of the operating force, and this makes it possible to downsize the starting clutch Sc. By providing the clutch SC on the crankshaft 1, which has the highest rotational speed and the lowest torque in the power unit Pu, its miniaturization is further promoted.

次に無段変速機Tmについて説明する。Next, the continuously variable transmission Tm will be explained.

この変速機Tmは、発進クラッチSCの右側に隣接して
クランク軸1上に設けた駆動Vプーリ40、その後方に
隣接配置した従動Vプーリ41及び両Vプーリ40,4
1間に懸張したVベルト42を主要素としている。
This transmission Tm includes a drive V pulley 40 provided on the crankshaft 1 adjacent to the right side of the starting clutch SC, a driven V pulley 41 and both V pulleys 40 and 4 arranged adjacently behind the drive V pulley 40.
The main element is a V-belt 42 that is stretched between 1 and 2.

駆動Vプーリ40は、クランク軸1の右端部にベアリン
グ43を介して回転自在に支承される固定プーリ半体4
4と、この固定プーリ半体44と一体の筒状駆動プーリ
軸45に2個のボールキー46を介して摺動可能に連結
される可動プーリ半体47とを備えている。この可動プ
ーリ半体47の背面にはねじ48によりピストン49が
固着され、このピストン49を収容する油圧シリンダ5
0の後壁板50aがケーシングCにポールベアリング5
1を介して支承されると共に駆動プーリ軸45に、受圧
部材としての止環52により連結される。
The drive V pulley 40 is a fixed pulley half 4 that is rotatably supported on the right end of the crankshaft 1 via a bearing 43.
4, and a movable pulley half 47 which is slidably connected via two ball keys 46 to a cylindrical drive pulley shaft 45 integral with the fixed pulley half 44. A piston 49 is fixed to the back surface of the movable pulley half 47 with a screw 48, and a hydraulic cylinder 5 that accommodates this piston 49
The rear wall plate 50a of 0 is attached to the casing C with the pole bearing 5.
1 and is connected to the drive pulley shaft 45 by a stop ring 52 as a pressure receiving member.

ピストン49は油圧シリンダ50内をVベルト42側の
第1油圧室50.と、それと反対側の第2油圧室502
とに区画し、ピストン49の受圧面は、第1油圧室50
1側が第2油圧室50□側より狭くなるように形成され
る。かくしてピストン49および油圧シリンダ50は油
圧式作動装置W、を構成する。
The piston 49 moves inside the hydraulic cylinder 50 into a first hydraulic chamber 50 on the V-belt 42 side. and the second hydraulic chamber 502 on the opposite side.
The pressure receiving surface of the piston 49 is divided into a first hydraulic chamber 50.
The first side is formed to be narrower than the second hydraulic chamber 50□ side. Thus, the piston 49 and the hydraulic cylinder 50 constitute a hydraulic actuating device W.

上記構成において、両袖圧室50.,502に同’Lの
油圧を導入すると、ピストン49は左右の受圧面積の差
による差動油圧を受けて左方へ移動して可動プーリ半体
47を固定プーリ半体44に近付け、駆動■プーリ40
の有効半径、即ちVベルト42との接触半径を拡大させ
ることができる。
In the above configuration, both arm pressure chambers 50. , 502, the piston 49 receives the differential oil pressure due to the difference in the pressure receiving areas on the left and right sides, moves to the left, brings the movable pulley half 47 closer to the fixed pulley half 44, and drives the piston 49. Pulley 40
The effective radius of the V-belt 42, that is, the contact radius with the V-belt 42 can be expanded.

また、第1油圧室50.に油圧をかけた状態で萬第2油
圧室502の油圧を解放すれば、ピストン49は第1油
圧室501の油圧により右動して可動プーリ半体47を
固定プーリ半体44より遠ざけ、駆動Vプーリ40の有
効半径を縮小することができる。このようなピストン4
9の油圧作動のために第1制御弁V、が駆動プーリ軸4
5内に設けられるが、その詳細は後述する。
Also, the first hydraulic chamber 50. If the hydraulic pressure in the second hydraulic chamber 502 is released while the hydraulic pressure is applied to the piston 49, the piston 49 moves to the right by the hydraulic pressure in the first hydraulic chamber 501, moving the movable pulley half 47 away from the fixed pulley half 44, and driving. The effective radius of the V-pulley 40 can be reduced. Piston 4 like this
9, the first control valve V is connected to the drive pulley shaft 4.
5, the details of which will be described later.

油圧シリンダ50は、前述のようにその後壁板50aを
駆動プーリ軸45に止環52を介して連結したので、固
定プーリ半体44とも一体的な連結関係に置かれる。こ
のようにすると、ピストン49の油圧作動に伴い固定プ
ーリ半体44と油圧シリンダ50間に作用するスラスト
荷重を駆動プーリ軸45に伝達、支承させることができ
、その結果、油圧シリンダ50を回転自在に支承するポ
ールベアリング51の負荷が軽減され、その耐久性を向
上させることができる。
Since the rear wall plate 50a of the hydraulic cylinder 50 is connected to the drive pulley shaft 45 via the stop ring 52 as described above, the hydraulic cylinder 50 is also placed in an integral connection relationship with the fixed pulley half 44. In this way, the thrust load acting between the stationary pulley half 44 and the hydraulic cylinder 50 due to the hydraulic operation of the piston 49 can be transmitted to and supported by the drive pulley shaft 45, and as a result, the hydraulic cylinder 50 can be freely rotated. The load on the pole bearing 51 supported by the pole bearing 51 is reduced, and its durability can be improved.

従動Vプーリ41は、従動プーリ軸56と一体に形成さ
れた固定プーリ半体57と、従動プーリ軸56に3個の
ボールキー58を介して軸方向摺動可能に連結される可
動プーリ半体59とを備えている。そして固定プーリ半
体57は駆動Vプーリ40の可動プーリ半体47の後方
に、また可動プーリ半体59は固定プーリ半体44の後
方に、それぞれ隣接して配置される。可動プーリ半体5
9の背面にはねじ60によりピストン61が固着され、
このピストン61を収容する油圧シリンダ62の後壁板
62aが従動プーリ軸56に止環63を介して連結され
る。ピストン61は油圧シリンダ62内をVベルト42
側の第1油圧室621と、それと反対側の第2油圧室6
2□とに区画し、ピストン61の受圧面は、第1油圧室
62.側が第2油圧室622側より狭くなるように形成
される。
The driven V-pulley 41 includes a fixed pulley half 57 formed integrally with the driven pulley shaft 56 and a movable pulley half connected to the driven pulley shaft 56 so as to be slidable in the axial direction via three ball keys 58. 59. The fixed pulley half 57 is arranged behind the movable pulley half 47 of the driving V-pulley 40, and the movable pulley half 59 is arranged behind the fixed pulley half 44 adjacent to each other. Movable pulley half 5
A piston 61 is fixed to the back side of 9 with a screw 60.
A rear wall plate 62a of the hydraulic cylinder 62 that accommodates the piston 61 is connected to the driven pulley shaft 56 via a stop ring 63. The piston 61 is connected to the V belt 42 inside the hydraulic cylinder 62.
The first hydraulic chamber 621 on the side and the second hydraulic chamber 6 on the opposite side
The pressure receiving surface of the piston 61 is divided into a first hydraulic chamber 62. The second hydraulic chamber 622 side is narrower than the second hydraulic chamber 622 side.

カくシてピストン61および油圧シリンダ62は油圧式
作動装置W2を構成する。
The piston 61 and the hydraulic cylinder 62 constitute a hydraulic actuating device W2.

上記構成において、両袖圧室62.,622に同圧の油
圧を導入すると、ピストン61は左右の受圧面積の差に
よる差動油圧を受けて右方に移動して可動プーリ半体5
9を固定プーリ半体57に近付け、従動■プーリ41の
有効半径を拡大させることができる。また、第1油圧室
62.に油圧をかけた状態で第2油圧室622の油圧を
解放すれば、ピストン61は第1油圧室62、の油圧に
より左動して可動プーリ半体59を固定プーリ半体57
より遠ざけ、従動Vプーリ41の有効半径を縮小するこ
とができる。このようなピストン61の油圧作動のため
に第2制御弁v2が従動プーリ軸56内に設けられるが
、その、詳細は後述する。
In the above configuration, both arm pressure chambers 62. , 622, the piston 61 receives the differential oil pressure due to the difference in the pressure receiving areas on the left and right sides, moves to the right, and moves the movable pulley half 5.
9 closer to the fixed pulley half 57, the effective radius of the driven pulley 41 can be expanded. Also, the first hydraulic chamber 62. When the hydraulic pressure in the second hydraulic chamber 622 is released with hydraulic pressure applied to
By moving it further away, the effective radius of the driven V-pulley 41 can be reduced. A second control valve v2 is provided in the driven pulley shaft 56 for hydraulically operating the piston 61, and details thereof will be described later.

従動プーリ軸56は左右両端部及び中央部の3個所をベ
アリング64,65.66を介してケーシングCに支承
される。そして、中央のベアリング65と右端部のベア
リング66の間において油圧シリンダ62は、受圧部材
としての止環63及び従動プーリ軸56を介して固定プ
ーリ半体57と一体的な連結関係に置かれる。このよう
にすると、ピストン61の油圧作動に伴い固定ブーり半
体57と油圧シリンダ62間に作用するスラスト荷重を
従動プーリ軸56に伝達、支承させることができ、その
結果、ベアリング65,66の負荷が軽減され、それら
の耐久性を向上させることができる。
The driven pulley shaft 56 is supported by the casing C through bearings 64, 65, and 66 at three locations, at both left and right ends and at the center. Between the center bearing 65 and the right end bearing 66, the hydraulic cylinder 62 is integrally connected to the fixed pulley half 57 via a stop ring 63 as a pressure receiving member and the driven pulley shaft 56. In this way, the thrust load that acts between the stationary boob half 57 and the hydraulic cylinder 62 due to the hydraulic operation of the piston 61 can be transmitted to and supported by the driven pulley shaft 56, and as a result, the bearings 65, 66 The load can be reduced and their durability can be improved.

さて、第1.第2制御弁v1.v2並びにその周囲の油
路に説明を移す。
Well, number one. Second control valve v1. The explanation will now be moved to v2 and the oil passages around it.

第1制御弁v1は中空の駆動プーリ軸45内に摺合され
た筒状の従動スプール弁71と、この従動スプール弁7
1内に摺合された筒状の主動スプール弁TOとよりなり
、主動スプール弁70内に内、外2重に嵌合した内側連
絡管72及び外側連絡管73が挿Δされる。内側連絡管
12は主動スプール弁70を左右に貫通して、ケーシン
グCのカバーC3に設けた前記制御油路Lcと発進クラ
ッチScの油圧室13に連なる油路14との間を連通ず
る。
The first control valve v1 includes a cylindrical driven spool valve 71 that is slid into the hollow drive pulley shaft 45, and this driven spool valve 7.
The main drive spool valve 70 consists of a cylindrical active spool valve TO which is slidably fitted into the main drive spool valve 70, and an inner communication pipe 72 and an outer communication pipe 73 which are fitted into the main drive spool valve 70 doubly fit inside and outside the main drive spool valve 70. The inner communication pipe 12 passes through the drive spool valve 70 from side to side, and provides communication between the control oil passage Lc provided in the cover C3 of the casing C and the oil passage 14 connected to the hydraulic chamber 13 of the starting clutch Sc.

また、内側連絡管72は主動スプール弁70の内側に筒
状油路74を画成し、この油路T4は外側連絡管T3を
介してカバーC3に設けた前記第1給油路り、に連通さ
れる。
Further, the inner communication pipe 72 defines a cylindrical oil passage 74 inside the main drive spool valve 70, and this oil passage T4 communicates with the first oil supply passage provided in the cover C3 via the outer communication pipe T3. be done.

両連絡管72.73は、外側連絡管73の右端を絞って
内側連絡管72の外周面に溶接することにより連結して
おり、また、外側連絡管73の外周には取付フランジ7
5が溶接しである。この取付フランジ75.はカバーC
5の内壁に形成した段付取付凹部76の大°径部に弾性
シールリング77    ′を介して嵌装され、止環7
Bにより抜止めされる。
Both communication pipes 72 and 73 are connected by squeezing the right end of the outer communication pipe 73 and welding it to the outer circumferential surface of the inner communication pipe 72, and a mounting flange 7 is provided on the outer circumference of the outer communication pipe 73.
5 is welded. This mounting flange 75. is cover C
The elastic seal ring 77' is fitted into the large diameter part of the stepped mounting recess 76 formed on the inner wall of the retaining ring 7.
It is prevented from coming off by B.

段付取付凹部16の小径部には内側連絡管T2の右方突
出部が弾性シールリングア9を介して嵌装される。かく
して、2重連絡管72.73はカバーC8にフローティ
ング支持され、クランク軸1及び駆動プーリ軸45の心
振れにも追従することができる。伺、80はカバーC3
の第1給油路り。
The rightward protrusion of the inner connecting pipe T2 is fitted into the small diameter portion of the stepped mounting recess 16 via the elastic seal ring 9. In this way, the double communication pipes 72 and 73 are floatingly supported by the cover C8, and can follow the eccentricity of the crankshaft 1 and the drive pulley shaft 45. Hi, 80 is cover C3
The first refueling route.

と外側連絡管73の内側とを連通させるために、該連絡
管73の周壁に穿設した透孔である。
This is a through hole bored in the peripheral wall of the connecting pipe 73 in order to communicate the inside of the outside connecting pipe 73 with the outside connecting pipe 73.

主動スプール弁TOは外周に左右一対の環状給油溝81
.82と1条の環状排油溝83とを有し、給油溝81.
82は透孔84,85を介して主動スプール弁70内の
筒状油路74と連通している。
The main spool valve TO has a pair of annular oil supply grooves 81 on the left and right sides on the outer periphery.
.. 82 and one annular oil drain groove 83, and an oil supply groove 81.
82 communicates with the cylindrical oil passage 74 in the main drive spool valve 70 via through holes 84 and 85.

また、従動スプール弁71は外周に左右一対の環状油溝
86,87を有し、その左側油溝86は、透孔88を介
して主動スプール弁TOの左側給油11181と常時連
通する一方、透孔89、環状油路90及び油路91を介
して油圧シリンダ50の第1油圧室501とも常時連通
している。右側油溝87は、透孔92を介して主動スプ
ール弁TOの排油溝83と常時連通する一方、透孔93
を介して油圧シリンダ50の第2油圧室50□とも常時
連通している゛。また、従動スプール弁11には、その
右側油溝87と主動スプール弁70の右側給油溝82と
の間の連通、遮断を制御する透孔94と、主動スプール
弁TOの排油溝83とケージ/グC内部との連通、遮断
を制御する切欠状の排油口95が設けられている。さら
に、従動スプール弁71は、駆動プーリ軸45を半径方
向に貫通する連動ピン96を介して可動プーリ半体47
に連結されて、それと共に左右動するようになっている
。駆動プーリ軸45の連動ピン96に貫通される部分は
、連動ピン96の左右動を妨げないように長孔97にな
っている。
Further, the driven spool valve 71 has a pair of left and right annular oil grooves 86, 87 on the outer periphery, and the left oil groove 86 is always in communication with the left oil supply 11181 of the main driving spool valve TO through the through hole 88, It is also constantly in communication with the first hydraulic chamber 501 of the hydraulic cylinder 50 via the hole 89, the annular oil passage 90, and the oil passage 91. The right oil groove 87 constantly communicates with the drain oil groove 83 of the main drive spool valve TO through the through hole 92, and
It is also in constant communication with the second hydraulic chamber 50□ of the hydraulic cylinder 50 via. The driven spool valve 11 also has a through hole 94 that controls communication and isolation between the right oil groove 87 and the right oil supply groove 82 of the driving spool valve 70, and an oil drain groove 83 of the driving spool valve TO and a cage. A cutout-shaped oil drain port 95 is provided to control communication with and cutoff from the inside of the G/G C. Further, the driven spool valve 71 is connected to the movable pulley half 47 via an interlocking pin 96 passing through the drive pulley shaft 45 in the radial direction.
It is connected to and can move left and right along with it. The portion of the drive pulley shaft 45 that is penetrated by the interlocking pin 96 is formed into a long hole 97 so as not to hinder the left and right movement of the interlocking pin 96.

第2制御弁V、は中空の従動プーリ軸56内に摺合され
た筒状の従動スプール弁101と、この従動スプール弁
101内に摺合された主動スプール弁100とよりなる
。主動スプール弁100の中心部には隔壁102により
互いに隔離される給油路103及び排油路104が形成
されており、給油路103は、それに挿入された連絡管
105を介してカバーC3に形成した前記第2給油路L
2と連通し、排油路104は、ケーシングC内部と連通
する従動ブーり軸56の中空部に開口する。
The second control valve V consists of a cylindrical driven spool valve 101 slidably fitted within the hollow driven pulley shaft 56, and a main driven spool valve 100 slidably fitted within the driven spool valve 101. An oil supply passage 103 and an oil discharge passage 104, which are separated from each other by a partition wall 102, are formed in the center of the active spool valve 100, and the oil supply passage 103 is formed in the cover C3 through a communication pipe 105 inserted therein. Said second oil supply path L
2, and the oil drain passage 104 opens into a hollow portion of the driven booby shaft 56 that communicates with the inside of the casing C.

連絡管105の外周に溶接した取付フランジ106はカ
バーC3の内壁に形成した取付凹部107に弾性シール
リング108を介して嵌装され、止環109により抜止
めされる。かくして、連絡管105はカバーC3にフロ
ーティング支持され、従動プーリ軸56の心振れに追従
することができる。
A mounting flange 106 welded to the outer periphery of the communication pipe 105 is fitted into a mounting recess 107 formed on the inner wall of the cover C3 via an elastic seal ring 108, and is prevented from coming off by a retaining ring 109. In this way, the communication pipe 105 is floatingly supported by the cover C3 and can follow the vibration of the driven pulley shaft 56.

また、主動スプール弁100は外周に左右一対112と
を有し、給油溝110,111は透孔113.114を
介していずれも前記給油路103と連通し、排油溝11
2は透孔115を介して前記排油路104と連通してい
る。まだ、従動スプール弁101は外周に左右一対の環
状油溝116゜117を有し、その右側油溝117は透
孔118を介して主動スプール弁100の右側給油溝1
11と常時連通する一方、透孔119、環状油路120
及び油路121を介して油圧シリンダ62の第1油圧室
62.とも常時連通し、左側油溝116は透孔122を
介して油圧シリンダ62の第2油圧室62□と常時連通
している。また、従動スプール弁101には、その左側
油溝116と、主動スプール弁100の左°側給油溝1
10及び排油溝112との各間の連通、遮断を制御する
透孔123゜124が設けられている。さらに、従動ス
プール弁101は、従動プーリ軸56を半径方向に貫通
する連動ビン125を介して可動プーリ半体59に連結
されて、それと共に左右動するようになっている。従動
プーリ軸56の連動ビン125に貫通される部分は、連
動ビン56の左右動を妨げないように長孔126になっ
ている。
Further, the main drive spool valve 100 has a pair of left and right 112 on the outer periphery, the oil supply grooves 110 and 111 are both in communication with the oil supply passage 103 via through holes 113 and 114, and the oil drain groove 11
2 communicates with the oil drain passage 104 through a through hole 115. The driven spool valve 101 has a pair of left and right annular oil grooves 116 and 117 on its outer periphery, and the right oil groove 117 connects to the right oil supply groove 1 of the main drive spool valve 100 through a through hole 118.
11, while the through hole 119 and the annular oil passage 120
and the first hydraulic chamber 62 . of the hydraulic cylinder 62 via the oil passage 121 . The left oil groove 116 is always in communication with the second hydraulic chamber 62□ of the hydraulic cylinder 62 via the through hole 122. The driven spool valve 101 also has a left side oil groove 116 and a left side oil groove 1 of the main driven spool valve 100.
Through holes 123 and 124 are provided to control communication and isolation between the oil drain groove 10 and the oil drain groove 112. Furthermore, the driven spool valve 101 is connected to the movable pulley half 59 via an interlocking pin 125 that radially passes through the driven pulley shaft 56, and is configured to move laterally together with the movable pulley half body 59. The portion of the driven pulley shaft 56 that is penetrated by the interlocking bin 125 is formed into a long hole 126 so as not to hinder the left and right movement of the interlocking bin 56.

第1.第2両制御弁V、、V2は、駆動側の可動プーリ
半体47と従動側の可動プーリ半体59とを同期作動さ
せるだめに、連動機構130により連結される。連動機
構130は、両制御−v1゜■2の中間でケーシングC
に両制御弁V、、V2と平行に設けた支軸131と、こ
の支軸131に摺動自在に支承されたシフタ132と、
このシフタ132に中間部を固着されると共に両制御弁
v1゜■2の主動スプール弁70,100に両端を連結
した連動棒133とよりなり、前記シフタ132はケー
シングCに軸支したシフトレバ−134の回動により作
動され、またそのシフトレノ(−134は第1図の操向
/%7ドルHの左グリップHgの回動により操作される
ようになっている。
1st. Both second control valves V, V2 are connected by an interlocking mechanism 130 in order to synchronize the movable pulley half 47 on the driving side and the movable pulley half 59 on the driven side. The interlocking mechanism 130 connects the casing C between the two controls -v1゜■2.
a support shaft 131 provided parallel to both control valves V, V2, and a shifter 132 slidably supported on the support shaft 131;
The shifter 132 consists of an interlocking rod 133 whose intermediate portion is fixed to the shifter 132 and whose ends are connected to the drive spool valves 70 and 100 of both control valves v1゜■2, and the shifter 132 is a shift lever 134 which is pivotally supported on the casing C. The shift leno (-134 is operated by the rotation of the left grip Hg of the steering/%7 dollar H in Fig. 1).

ここで、・両制御弁v11 vtの作用を説萌すると、
第3図に示すように、シフタ132がカッ(−C3に当
接した右動限に位置する場合は、第1制御弁V、では透
孔94が主動スプール弁70により閉じられて右側給油
溝82と右側油溝87との間が遮断されると共に、排油
溝83と排油口95とが連通し、一方、左側給油溝81
と左側油溝86間は常時連通状態にあるので、第1油圧
室501には筒状油路T4に待機する作動油圧が油溝8
1゜86等を通して導入され、第2油圧室50tは油溝
82,87等を介して排油口95に開放される。
Here, ・Explaining the action of both control valves v11 and vt,
As shown in FIG. 3, when the shifter 132 is located at the right limit of movement in contact with the cup (-C3), the through hole 94 of the first control valve V is closed by the active spool valve 70 and the right oil supply groove is closed. 82 and the right oil groove 87, and the oil drain groove 83 and the oil drain port 95 communicate with each other, while the left oil groove 81
Since there is constant communication between the oil groove 86 and the left oil groove 86, the hydraulic pressure waiting in the cylindrical oil passage T4 is transferred to the oil groove 8 in the first hydraulic chamber 501.
1° 86, etc., and the second hydraulic chamber 50t is opened to the oil drain port 95 via oil grooves 82, 87, etc.

したがって、ピストン11は第1油圧室50.の油圧を
受けて右動して可動プーリ半体47を後退限に保持する
Therefore, the piston 11 is in the first hydraulic chamber 50. The movable pulley half 47 is held at the backward limit by moving to the right in response to the hydraulic pressure.

また、この場合、第2制御弁V、では、左側給油溝11
0が透孔123を介して左側油溝116と連通すると共
に、透孔124が主動スプール弁100に閉じられて排
油溝112と左側油溝116間が遮断される。一方、右
側給油溝111と右側油溝117間は常時連通状態にあ
るので、給油路103に待機する作動油圧が油圧シリン
ダ62の第1.第2両油圧室621,622に導入され
、したがってピストン61は前述のように差動油圧を受
けて右方へ移動して可動プーリ半体59を前進限に保持
する。
In addition, in this case, the second control valve V, the left oil supply groove 11
0 communicates with the left oil groove 116 via the through hole 123, and the through hole 124 is closed by the active spool valve 100, thereby blocking the oil drain groove 112 and the left oil groove 116. On the other hand, since the right oil groove 111 and the right oil groove 117 are always in communication, the hydraulic pressure waiting in the oil supply path 103 is applied to the first hydraulic cylinder 62. The piston 61 is introduced into the second two hydraulic chambers 621 and 622, and therefore moves to the right upon receiving the differential hydraulic pressure as described above, and holds the movable pulley half 59 at its forward limit.

このようにして、駆動Vプーリ40の有効半径は最小に
、また従動Vプーリ41の有効半径は最大に制御される
ので、駆動Vプーリ40は最大の減速比を以て従動Vプ
ーリ41を駆動することができる。
In this way, the effective radius of the driving V-pulley 40 is controlled to the minimum and the effective radius of the driven V-pulley 41 is controlled to the maximum, so that the driving V-pulley 40 drives the driven V-pulley 41 with the maximum reduction ratio. I can do it.

次に、シフタ132を左動すれば、連動棒133によシ
両主動スプール弁70,100は同時に左動される。そ
して、主動スプール弁TOの左動により透孔94が開い
て右側給油溝82と右側油溝87間が連通ずると共に排
油口95が主動スプール弁70により閉じられると、筒
状油路74の作動油圧が第2油圧室502にも導入され
るため、ピストン49は前述のように差動油圧を受けて
左動を開始し、可動プーリ半体4Tを前進させる。
Next, when the shifter 132 is moved to the left, both the active spool valves 70 and 100 are simultaneously moved to the left by the interlocking rod 133. When the main drive spool valve TO moves to the left, the through hole 94 opens and the right oil supply groove 82 and the right oil groove 87 communicate with each other, and when the oil drain port 95 is closed by the main drive spool valve 70, the cylindrical oil passage 74 opens. Since the working hydraulic pressure is also introduced into the second hydraulic chamber 502, the piston 49 receives the differential hydraulic pressure and starts moving to the left as described above, thereby moving the movable pulley half 4T forward.

すると、この可動プーリ半体47の前進は連動ピン96
を介して従動スプール弁71に伝達されるので1.該ス
プール弁71も同時に移動して主動スプール弁70を追
跡し、その追跡により透孔94及び排油口95が主動ス
プール弁70に閉じられて、第2油圧室50tが筒状油
路74及び排油口95のいずれとも遮断されたとき、ピ
ストン49したがって可動プーリ半体47の移動は停止
する。
Then, the movement of the movable pulley half 47 is caused by the interlocking pin 96.
The signal is transmitted to the driven spool valve 71 via 1. The spool valve 71 also moves at the same time to track the main drive spool valve 70, and as a result of this tracking, the through hole 94 and oil drain port 95 are closed by the main drive spool valve 70, and the second hydraulic chamber 50t is closed to the cylindrical oil passage 74 and the oil drain port 95. When both of the oil drain ports 95 are blocked, the movement of the piston 49 and therefore the movable pulley half 47 is stopped.

即ち、可動ブーり半体47は主動スプール弁T0の左動
に応じて前進することができる。
That is, the movable boom half 47 can move forward in response to leftward movement of the main drive spool valve T0.

また、主動スプール弁100の左動によれば、透孔12
3が主動スプール弁100に閉じられると共に、透孔1
24が開かれて排油溝112′2左側油溝116間が連
通ずるので、第2油圧室62□の油圧が排油路104に
解放される。このため、ピストン61は第1油圧室62
.の油圧により左動を開始し、可動プーリ半体59を後
退させる。
Furthermore, according to the leftward movement of the main drive spool valve 100, the through hole 12
3 is closed to the main drive spool valve 100, and the through hole 1
24 is opened and the oil drain groove 112'2 and the left oil groove 116 are communicated with each other, so that the hydraulic pressure in the second hydraulic chamber 62□ is released to the oil drain path 104. Therefore, the piston 61 is moved to the first hydraulic chamber 62.
.. The leftward movement is started by the hydraulic pressure of , and the movable pulley half 59 is moved backward.

すると、この可動プーリ半体59の後退は連動ビ/12
5を介して従動スプール弁101に伝動されるので、該
スプール弁101も同時に移動して主動スプール弁10
0を追跡し、その追跡により両道孔113,114が主
動スプール弁100に閉じられて、第2油圧室62□が
給油路103及び排油路104のいずれとも遮断された
とき、ピストン61しだがって可動プーリ半体59の移
動は停止する。即ち、可動プーリ半体59は主動スプー
ル弁100の左動に応じて後退することができる。
Then, the movement of the movable pulley half 59 is caused by the interlocking bit/12.
5 to the driven spool valve 101, the spool valve 101 also moves at the same time to become the main driven spool valve 10.
0, and as a result of the tracking, when both passage holes 113 and 114 are closed by the active spool valve 100 and the second hydraulic chamber 62□ is cut off from both the oil supply passage 103 and the oil discharge passage 104, the piston 61 The movement of the movable pulley half 59 is then stopped. That is, the movable pulley half 59 can move backward in response to leftward movement of the main drive spool valve 100.

このようにして、駆動Vプーリ40の可動プーリ半体4
7の前進と、従動Vプーリ41の可動プーリ半体59の
後湯とが同期して行われるため、■ベルト42に過度の
張力を与えることなく駆動V7’−IJ40の有効半径
の縮小と、従動VブーIJ41の有効半径の拡大とを同
時に達成し、両Vプーリ40.41間の減速比を的確に
減じることができる。
In this way, the movable pulley half 4 of the drive V pulley 40
Since the forward movement of V7' and the rearward movement of the movable pulley half 59 of the driven V pulley 41 are performed in synchronization, the effective radius of the drive V7'-IJ40 can be reduced without applying excessive tension to the belt 42; The effective radius of the driven V-boot IJ41 can be expanded at the same time, and the reduction ratio between both V-pulleys 40, 41 can be accurately reduced.

以上において、駆動Vプーリ40の油圧シリンダ50は
従動VブーIJ41の油圧シリンダ62よりも大径に形
成される。これによれば、同油圧下においても、駆動側
のピストン49が受ける油圧作動力を従動側のピストン
61が受ける油圧作動力よりも常に大きくすることがで
き、変速の応答性を向上させる上に有効である。
In the above, the hydraulic cylinder 50 of the driving V-pulley 40 is formed to have a larger diameter than the hydraulic cylinder 62 of the driven V-boot IJ41. According to this, even under the same hydraulic pressure, the hydraulic actuation force received by the driving side piston 49 can always be made larger than the hydraulic actuation force applied by the driven side piston 61, which not only improves the responsiveness of shifting, but also improves the responsiveness of shifting. It is valid.

また、駆動Vプーリ40のピストン49においては、そ
れの第1油圧室50.側の受圧面積をA7、第2油圧室
502側の受圧面積をA2とすると、A2   Al>
AI 上式が成立し、また従動Vプーリ41のピストン゛61
においては、それの第1油圧室62.側の受圧面積をB
Ir第2油圧室622側の受圧面積をB2 とすると、 B2     Bl>Bl 上式が成立している。したがって、各可動プーリ半体4
7.59の油圧による前進力をそれぞれの後退力よりも
常に大きくすることができ、これによっても変速応答性
の向上がもたらされる。
Also, in the piston 49 of the drive V-pulley 40, its first hydraulic chamber 50. If the pressure receiving area on the side is A7 and the pressure receiving area on the second hydraulic chamber 502 side is A2, then A2 Al>
AI The above formula holds, and the piston 61 of the driven V pulley 41
In the first hydraulic chamber 62. The pressure receiving area on the side is B
If the pressure-receiving area on the Ir second hydraulic chamber 622 side is B2, then the above equation holds: B2 Bl>Bl. Therefore, each movable pulley half 4
The forward force due to the 7.59 hydraulic pressure can always be made larger than the respective reverse force, which also improves the shift response.

更に、油圧シリンダ50.62には可動プーリ半体47
,59をそれぞれ前進方向に弾圧するばね53,67が
縮設される。これらのばね53゜67は各油圧シリンダ
50.62内に未だ油圧が導入されていないとき、■ベ
ルト42に予張力を与えてその弛みを除去するように機
能する。
Furthermore, the hydraulic cylinder 50.62 has a movable pulley half 47.
, 59 are compressed in the forward direction. These springs 53 and 67 function to pretension the belt 42 and eliminate slack when no hydraulic pressure is introduced into each hydraulic cylinder 50, 62 yet.

補助ケースC2において、駆動Vプーリ40の油圧シリ
ンダ50は前方外側に、従動Vプーリ41の油圧シリン
ダ62は後方内側にそれぞれ配置され、したがって従動
Vプーリ41の固定プーリ半体57は後方外側に配置さ
れる。この固定プーリ半体5Tは油圧シリンダ62のよ
うな付属部品を持たないので、固定プーリ半体57の背
面側のケーシングCの右外側面後部に凹所135を形成
することができ、第1図に示すように、との凹所135
を利用してブレーキペダルBpが設置される。このよう
にすると、ブレーキペダルBpの外方突出を無くシ、若
しくはその突出量を小さくすることができる。尚、図中
Stはステップである。
In the auxiliary case C2, the hydraulic cylinder 50 of the driving V pulley 40 is arranged on the front outer side, the hydraulic cylinder 62 of the driven V pulley 41 is arranged on the rear inner side, and therefore the fixed pulley half 57 of the driven V pulley 41 is arranged on the rear outer side. be done. Since this fixed pulley half 5T does not have an attached part such as a hydraulic cylinder 62, a recess 135 can be formed in the rear right outer surface of the casing C on the back side of the fixed pulley half 57, as shown in FIG. As shown in the recess 135 with
The brake pedal Bp is installed using this. In this way, the outward protrusion of the brake pedal Bp can be eliminated or the amount of protrusion can be reduced. In addition, St in the figure is a step.

また、肉池圧シリンダ50.62を両Vプーリ40.4
1の対角線上に配置することは、両■ブーIJ40,4
1の近接配置の場合でも、各油圧シリンダ50.62の
外径を他方の油圧シリンダ62.50に干渉されずに自
由に設定し得るので好都合である。
In addition, the meat pond pressure cylinder 50.62 is connected to both V pulleys 40.4
Placing on the diagonal of 1 means both ■Boo IJ40,4
Even in the case of two adjacent hydraulic cylinders 50.62, the outer diameter of each hydraulic cylinder 50.62 can be freely set without being interfered with by the other hydraulic cylinder 62.50, which is advantageous.

次に、補助変速機Taの説明をする。Next, the auxiliary transmission Ta will be explained.

第1及び第2図に示すように、ベアリング64゜65の
間で従動プーリ軸56上にニードルベアリング137を
介して支承される入力軸138と、その後方で主ケース
CIにニードルベアリング139及びボールベアリング
140を介して両端部を支承される出力軸141とを有
し、入力軸138は減速歯車列142を介して従動プー
リ軸56と連結される一方、低速及び高速歯車列143
゜144を介して出力軸141とも連結される。
As shown in FIGS. 1 and 2, an input shaft 138 is supported between bearings 64 and 65 on the driven pulley shaft 56 via a needle bearing 137, and behind the input shaft 138, a needle bearing 139 and a ball are attached to the main case CI. It has an output shaft 141 supported at both ends via bearings 140, and an input shaft 138 is connected to the driven pulley shaft 56 via a reduction gear train 142, while a low-speed and high-speed gear train 143
It is also connected to the output shaft 141 via 144.

減速歯車列142は、従動ブーり軸56にスプライン結
合した第1小歯車145、この小歯車145より中間歯
車146を介して駆動される第1犬歯車147、この大
歯車141と一体に回転する第2小歯車148及びこの
小歯車148より駆動される第2大歯車149より構成
され、一体の第1大歯車147及び第2小歯車148は
ニードルベアリング150を介して出力軸141上に支
承され、第2大歯車149は入力軸138の一端に一体
に形成される。したがって、従動プーリ軸56の回転は
第1歯車145,147により1段階減速し、まだ第2
歯車148,149によりもう1段階減速して入力軸1
38に伝達することができる。
The reduction gear train 142 rotates together with a first pinion 145 spline-coupled to the driven boolean shaft 56, a first canine gear 147 driven by the pinion 145 via an intermediate gear 146, and a large gear 141. It is composed of a second small gear 148 and a second large gear 149 driven by this small gear 148, and the first large gear 147 and second small gear 148, which are integrated, are supported on the output shaft 141 via a needle bearing 150. , the second large gear 149 is integrally formed with one end of the input shaft 138. Therefore, the rotation of the driven pulley shaft 56 is decelerated by one step by the first gears 145 and 147, and the rotation of the driven pulley shaft 56 is still reduced by one step.
The gears 148 and 149 reduce the speed by one more step, and the input shaft 1
38.

低速歯車列143は入力軸138に一体に形成された駆
動歯車151と、出力軸141に回転自在に支承されて
上記歯車151より駆動される被動歯車152とより・
構成され、また高速歯車列144も同じく入力軸138
に一体に形成された駆動歯車153と、出力軸141に
回転自在に支承されて上記歯車153より駆動される被
動歯車154とより構成され、そして減速比は、低速歯
車列143の方を高速歯車列144の方より当然に大き
く設定される。また、出力軸141には両被動歯車15
2.154に交互にドッグ結合し得るシフタ155が摺
動自在にスプライン嵌合156されており、したがって
、シフタ155は、被動歯車152と結合する低速位置
「LO」と、被動歯車154と結合する高速位置rHi
Jとの2つ切換位置を持つが、その外に両被動歯車15
2゜154のいずれとも結合しない中立位置rNJをも
とり得るものであり、このシフタ155の切換操作はシ
フトフォーク157により行われる。かくして、シフタ
155を「LO」またはrHi Jの位置に切換えれば
、低速歯車列143または高速歯車列144が作動状態
となるので、人、出力軸138,141間に高低二段の
変速比を与えるこの補助変速機Taは、前記無段変速機
Tmの不足する変速比幅を補うものであり、換言すれば
補助変速機Taの併設により、無段変速機Tmの駆動及
び従動VブーIJ40,41の軸間距離を可及的に狭ば
めてこれらをパワーユニツ)Puのケージ/グC内にコ
ンパクトに収めることが可能となり、それに伴う無段変
速機Tmの変速比幅の多少の犠牲が許容される。
The low-speed gear train 143 includes a driving gear 151 integrally formed with the input shaft 138 and a driven gear 152 rotatably supported by the output shaft 141 and driven by the gear 151.
The high speed gear train 144 is also connected to the input shaft 138.
It is composed of a driving gear 153 integrally formed with the output shaft 141, and a driven gear 154 rotatably supported by the output shaft 141 and driven by the gear 153. Naturally, it is set larger than column 144. Further, both driven gears 15 are provided on the output shaft 141.
2. A shifter 155 is slidably splined 156 and can be dog-coupled alternately to the driven gear 154, such that the shifter 155 has a low speed position "LO" that engages the driven gear 152 and a low speed position "LO" that engages the driven gear 154. High speed position rHi
It has two switching positions with J, but in addition to that, both driven gears 15
The shifter 155 can be switched to a neutral position rNJ in which it is not connected to any of the 2° 154, and the shift fork 157 performs the switching operation of the shifter 155. Thus, by switching the shifter 155 to the "LO" or rHi J position, the low-speed gear train 143 or the high-speed gear train 144 is activated, so that a two-speed gear ratio between high and low gears is set between the output shafts 138 and 141. This auxiliary transmission Ta is intended to compensate for the insufficient gear ratio range of the continuously variable transmission Tm.In other words, by providing the auxiliary transmission Ta, the drive and driven V-boot IJ40 of the continuously variable transmission Tm are improved. By narrowing the distance between the shafts of the 41 as much as possible, it is possible to compactly fit them into the cage/gage C of the power unit (Pu), with the result that there is some sacrifice in the gear ratio width of the continuously variable transmission Tm. Permissible.

以上のように本発明によれば、ケーシングにベアリング
を介して支承されるプーリ軸を固設された固定プーリ半
体と、プーリ軸上に設けられた可動プーリ半体と、可動
プーリ半体を固定プーリ半体に対して進退させて有効半
径を調節すべく、プーリ軸上に設けられた油圧式作動装
置とを備え、油圧式作動装置を可動プーリ半体に固着さ
れたピストンと、ピストンを収容する油圧シリンダとよ
り構成したベルト式無段変速機のVプーリにおいて、油
圧シリンダとプーリ軸との間に、油圧式作動装置の作動
に伴い固定プーリ半体と油圧シリンダ内に作用するスラ
スト荷重をプーリ軸に伝達、支承させる受圧部材を設け
たので、プーリ軸をベアリングを介して直接ケーシング
に支承させる場合およびプーリ軸上に油圧シリンダを支
承させ、その油圧シリンダをベアリングを介してケーシ
ングに支承させる場合にも、そのベアリングに作用する
油圧式作動装置の作動に伴うスラスト荷重を軽減してベ
アリングの耐久性を向上させることができる。
As described above, according to the present invention, the fixed pulley half has a fixed pulley shaft that is supported by the casing via a bearing, the movable pulley half that is provided on the pulley shaft, and the movable pulley half. A hydraulic actuating device is provided on the pulley shaft in order to adjust the effective radius by moving the fixed pulley half forward and backward, and the hydraulic actuating device is connected to a piston fixed to the movable pulley half and In a V-pulley of a belt-type continuously variable transmission consisting of a hydraulic cylinder and a housing hydraulic cylinder, between the hydraulic cylinder and the pulley shaft, thrust load acts on the fixed pulley half and the hydraulic cylinder due to the operation of the hydraulic actuator. Since we have provided a pressure receiving member that transmits and supports the pulley shaft, it is possible to support the pulley shaft directly on the casing via a bearing, or to support a hydraulic cylinder on the pulley shaft and the hydraulic cylinder to be supported on the casing via a bearing. In this case, the durability of the bearing can be improved by reducing the thrust load that is applied to the bearing due to the operation of the hydraulic actuator.

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

図面は本発明の一実施例を示すもので、第1図は自動二
輪車の動力伝達系の概略平面図、第2図はその動力伝達
系内のパワーユニットの要部縦断平面図、第3図はその
パワーユニット内のVベルト式無段変速機の拡大縦断平
面図である。
The drawings show one embodiment of the present invention; FIG. 1 is a schematic plan view of a power transmission system of a motorcycle, FIG. It is an enlarged longitudinal sectional plan view of the V-belt type continuously variable transmission in the power unit.

Claims (1)

【特許請求の範囲】[Claims] ケーシングにベアリングを介して支承されるプーリ軸を
固設された固定プーリ半体と、該プーリ軸上に設けられ
た可動プーリ半体と、該可動プーリ半体を前記固定プー
リ半体に対して進退させて有効半径を調節すべく、前記
プーリ軸上に設けられた油圧式作動装置とを備え、該油
圧式作動装置を前記可動プーリ半体に固着されたピスト
ンと、該ピストンを収霞する油圧シリンダとより構成し
たベルト式無段変速機のVプーリにおいて、該油圧シリ
ンダと前記プーリ軸との間に、該油圧式作動装置の作動
に伴い前記固定プーリ半体と油圧シリンダ内に作用する
スラスト荷重を該プーリ軸に伝達、支承させる受圧部材
を設けてなる、ベルト式無段変速機のVプーリ。
A fixed pulley half having a fixed pulley shaft supported by a casing via a bearing, a movable pulley half provided on the pulley shaft, and the movable pulley half relative to the fixed pulley half. A hydraulic actuating device is provided on the pulley shaft to move the movable pulley half forward and backward to adjust the effective radius, and the hydraulic actuating device is connected to a piston fixed to the movable pulley half, and the piston is compressed. In a V-pulley of a belt-type continuously variable transmission configured with a hydraulic cylinder, between the hydraulic cylinder and the pulley shaft, an actuator acts on the fixed pulley half and the hydraulic cylinder as the hydraulic actuating device operates. A V-pulley for a belt-type continuously variable transmission, which is provided with a pressure-receiving member that transmits and supports thrust load to the pulley shaft.
JP12105782A 1982-07-12 1982-07-12 V-pulley for belt type stepless change gear Pending JPS58102856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12105782A JPS58102856A (en) 1982-07-12 1982-07-12 V-pulley for belt type stepless change gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12105782A JPS58102856A (en) 1982-07-12 1982-07-12 V-pulley for belt type stepless change gear

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP56198796A Division JPS5899548A (en) 1981-12-10 1981-12-10 Belt type infinitely variable gear

Publications (1)

Publication Number Publication Date
JPS58102856A true JPS58102856A (en) 1983-06-18

Family

ID=14801766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12105782A Pending JPS58102856A (en) 1982-07-12 1982-07-12 V-pulley for belt type stepless change gear

Country Status (1)

Country Link
JP (1) JPS58102856A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59232134A (en) * 1983-06-16 1984-12-26 Idemitsu Petrochem Co Ltd Ethylene polymer composition

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5455266A (en) * 1977-10-06 1979-05-02 Raimazu Betairugiyungu Gmbh Conical disc belt transmission that can adjust in nonnstage shape

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5455266A (en) * 1977-10-06 1979-05-02 Raimazu Betairugiyungu Gmbh Conical disc belt transmission that can adjust in nonnstage shape

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59232134A (en) * 1983-06-16 1984-12-26 Idemitsu Petrochem Co Ltd Ethylene polymer composition

Similar Documents

Publication Publication Date Title
JPS6329141B2 (en)
US4674359A (en) Vehicular speed change gear having a continuously variable transmission connected in series with a stepped gear transmission
US4881925A (en) Belt type continuously variable transmission for vehicle
CA2578888C (en) Transmission for vehicle
JPS58102827A (en) Device for adjusting amount of cooling oil for hydraulic pressure operating type friction clutch
JP3830129B2 (en) Power transmission device
JPS6211230B2 (en)
JPS58102856A (en) V-pulley for belt type stepless change gear
JPS633191B2 (en)
JPS633189B2 (en)
JPS58101828A (en) Power unit for vehicle
JPS58102828A (en) Operating system for friction clutch for auto-bicycle
JPS58136520A (en) Powr unit for vehicle
JPS633190B2 (en)
JPS58102863A (en) Power unit for vehicle
JPS58102897A (en) Work oil feeding apparatus
JPS58137654A (en) Work oil distributing apparatus for v-belt type stepless transmission
JPS58137658A (en) Power unit for vehicle
JPS58102896A (en) Power unit for car
JP2920033B2 (en) Hydraulic clutch mechanism
JPS6148024B2 (en)
JPS622187B2 (en)
JPS58149457A (en) Vehicular transmission
JPS58156763A (en) Speed change gear for vehicle
JPS58102854A (en) V-belt type stepless change gear