JPS61119866A - Toroidal type continuously variable transmission - Google Patents
Toroidal type continuously variable transmissionInfo
- Publication number
- JPS61119866A JPS61119866A JP24198584A JP24198584A JPS61119866A JP S61119866 A JPS61119866 A JP S61119866A JP 24198584 A JP24198584 A JP 24198584A JP 24198584 A JP24198584 A JP 24198584A JP S61119866 A JPS61119866 A JP S61119866A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- spool
- continuously variable
- support
- control valve
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
- F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
- F16H15/04—Gearings providing a continuous range of gear ratios
- F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
- F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
- F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
- F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
Abstract
Description
【発明の詳細な説明】
発明の分野
本発明は入出力ディスク間にパワーローラを圧接状態で
配置し、このパワーローラの傾きを変えることによって
無段変速を行うことができるトロイダル形無段変速機に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention provides a toroidal continuously variable transmission in which a power roller is placed in pressure contact between input and output disks, and by changing the inclination of the power roller, continuously variable speed can be achieved. It is related to.
従来技術とその問題点
従来、特開昭５８−５４２６２号公報に記載のように、
パワーコーラを回転自在に支持する支持体をそれ自身の
軸方向（パワーローラ軸と直交する方向）に作動させる
ことにより、パワーローラに作用する接線方向の力の方
向を変化させ、この接線方向の力の分力によってパワー
ローラの傾きを変えるようにしたトロイダル形無段変速
機が知られている。Prior art and its problems As described in Japanese Patent Application Laid-Open No. 58-54262,
By operating the support that rotatably supports the power cola in its own axial direction (direction perpendicular to the power roller axis), the direction of the tangential force acting on the power roller is changed, and this tangential force is A toroidal continuously variable transmission is known that changes the inclination of a power roller depending on a force component.
この場合には、支持体の両端部にシリンダ室を設けると
ともに、シリンダ室と油圧供給源との間に制御弁を設け
、この制御弁により各シリンダ室への油路を切り換える
ことによって、シリンダ室に作用するライン圧をＯＮ、
ＯＦＦ制御し、支持体を軸方向に作動させるのである。In this case, cylinder chambers are provided at both ends of the support, a control valve is provided between the cylinder chamber and the hydraulic pressure supply source, and the control valve switches the oil path to each cylinder chamber. Turn on the line pressure that acts on the
The OFF control is used to operate the support body in the axial direction.
ところで、上記制御弁はハウジングに立設された支持柱
に挿通され、下面がばねで弾性的に支持されるとともに
、支持柱の先端部に螺合した制御ノブによって上下方向
に作動されるようになっている。したがって、変速比を
変える場合には制御弁自体が上下に動作することになる
が、これでは制御弁を収容するスペースが非常に大きく
なるとともに、撮動や衝撃が加わったとき、制御弁が慣
性によって上下に動き、変速位置に狂いが生じるおそれ
がある。By the way, the above-mentioned control valve is inserted through a support column installed upright in the housing, and the lower surface is elastically supported by a spring, and is operated in the vertical direction by a control knob screwed onto the tip of the support column. It has become. Therefore, when changing the gear ratio, the control valve itself has to move up and down, but this requires a very large space to accommodate the control valve, and also causes the control valve to become inertial when photographed or subjected to impact. This may cause the gear to move up and down, causing the shift position to become incorrect.
発明の目的
本発明はかかる従来の問題点に鑑みてなされたもので、
その目的は、上記制御弁と同様の機能を存するコントロ
ールバルブを小さなスペースに効率良く収容できるとと
もに、撮動や衝撃が加わっても変速位置に狂いを生じる
心配がないトロイダル形無段変速機を提供することにあ
る。Purpose of the Invention The present invention has been made in view of such conventional problems.
The purpose is to provide a toroidal continuously variable transmission that can efficiently accommodate a control valve that has the same function as the control valve described above in a small space, and that does not have to worry about shift position shifting even when photographed or subjected to impact. It's about doing.
発明の構成
上記目的を達成するために、本発明は、コントロールバ
ルブを、バルブボデーと、該バルブボデー内に摺動自在
に挿入されたスリーブと、該スリーブ内に摺動自在に挿
入されたスプールとの３層構造とし、上記スリーブまた
はスプールの一方を変速比制御装置により作動させると
ともに、他方を上記支持体と一体に回動するプリシスカ
ムに従動せしめたものである。Structure of the Invention In order to achieve the above object, the present invention provides a control valve including a valve body, a sleeve slidably inserted into the valve body, and a spool slidably inserted into the sleeve. It has a three-layer structure, with one of the sleeve or spool being operated by a gear ratio control device, and the other being driven by a precise cam that rotates together with the support.
すなわち、パルプボデーを固定部に固定し、スリーブと
スプールとを相互に作動させることにより、従来の制御
弁と同様の機能を実現でき、かつ構成部品をバルブボデ
ー内にコンパクトに収容できるので、スペースを取らず
、かつ振動や衝撃によって変速位置が狂うことがない。In other words, by fixing the pulp body to a fixed part and mutually operating the sleeve and spool, it is possible to achieve the same function as a conventional control valve, and the components can be housed compactly within the valve body, saving space. The gear shift position will not shift due to vibration or impact.
実施例の説明
図面は本発明にかかるトロイダル形無段変速機の一例を
示し、１はトロイダル変速部、２０はコントロールバル
ブである。DESCRIPTION OF THE EMBODIMENTS The drawings show an example of a toroidal continuously variable transmission according to the present invention, where 1 is a toroidal transmission section and 20 is a control valve.
トロイダル変速部１の対向する入力ディスク２と出力デ
ィスク（図示せず）とは箱型のハウジング３内に回動自
在に支持されており、両ディスクの間には２個のパワー
ローラ４が圧接状態で配置され、それぞれのパワーロー
ラ４は軸５を介して支持体６によって回転自在に支持さ
れている。支持体６の両端部には、ハウジング３に形成
したシリンダ室７，８，９．１０内を摺動自在なピスト
ン１１，１２，１３．１’４が連接されており、上記支
持体６はピストンとともに軸方向（図中、上下方向）に
移動可能であり、かつ自身の軸の回りに回動可能である
。An input disk 2 and an output disk (not shown) facing each other in the toroidal transmission section 1 are rotatably supported in a box-shaped housing 3, and two power rollers 4 are pressed between the two disks. Each power roller 4 is rotatably supported by a support 6 via a shaft 5. Pistons 11, 12, 13.1'4, which are slidable in cylinder chambers 7, 8, 9.10 formed in the housing 3, are connected to both ends of the support 6. It can move along with the piston in the axial direction (vertical direction in the figure) and can rotate around its own axis.
コントロールバルブ２０は、ハウジング３の下側面に固
定されたパルプボデー２１と、バルブボデー２１内に摺
動自在に挿入されたスリーブ２２と、スリーブ２２内に
摺動自在に挿入されたスプール２３との３層構造となっ
ている。上記スリーブ２２の左端部には軸２４が直径方
向に架は渡してあり、この軸２４に当接する変速比制御
装置のアクチュエータ２５によってスリーブ２２は軸方
向に作動され、一方スプール２３は、その右端面に当接
する揺動自在なベルクランク２６を介してプリシスカム
２７により従動せしめられる。上記軸２４をアクチュエ
ータ２５と常時当接させ、かつスプール２３の右端面を
ベルクランク２６を介してプリシスカム２７と常時当接
させるために、スプール２３の左端面と軸２４との間に
スプリング２８が介装されている。上記プリシスカム２
７は右側の支持体６の下端部とロフト２９によって連結
されており、これによりプリシスカム２７は支持体６と
一体に回転してスプール２３を進退させる。The control valve 20 includes a pulp body 21 fixed to the lower surface of the housing 3, a sleeve 22 slidably inserted into the valve body 21, and a spool 23 slidably inserted into the sleeve 22. It has a layered structure. A shaft 24 extends diametrically across the left end of the sleeve 22, and the sleeve 22 is actuated in the axial direction by an actuator 25 of a gear ratio control device that comes into contact with the shaft 24, while a spool 23 is connected to the right end of the sleeve 22. It is driven by a precise cam 27 via a swingable bell crank 26 that comes into contact with a surface. A spring 28 is installed between the left end surface of the spool 23 and the shaft 24 in order to keep the shaft 24 in constant contact with the actuator 25 and the right end surface of the spool 23 in constant contact with the precise cam 27 via the bell crank 26. It has been intervened. Presiscum 2 above
7 is connected to the lower end of the right support 6 by a loft 29, whereby the precise cam 27 rotates together with the support 6 to move the spool 23 forward and backward.
コントロールバルブ２０の中央部に形成したポート３０
には油圧源からライン圧が供給されており、左側のポー
ト３１には右上部および左下部のシリンダ室９，８と連
通する配管３２が接続され、右側のポート３３には左上
部および右下部のシリンダ室’７．１０と連通ずる配管
３４が接続されている。Port 30 formed in the center of control valve 20
is supplied with line pressure from a hydraulic source, a port 31 on the left side is connected to a pipe 32 that communicates with the upper right and lower left cylinder chambers 9, 8, and a port 33 on the right side is connected to the upper left and lower right cylinder chambers. A pipe 34 communicating with the cylinder chamber '7.10 is connected.
上記構成のトロイダル形無段変速機において、トロイダ
ル変速部１の変速比を変える場合には、まずアクチュエ
ータ２５によりコントロールバルブ２０のスリーブ２２
を例えば図中左側へ作動させる。これによりポート３０
と３３とが連通し、ライン圧は油路３４を介して左上部
と右下部のシリンダ室７．１０とに供給されるとともに
、右上部と左下部のシリンダ室９，８と油路３２を介し
て連通したポート３１は、スプール２３の軸心に設けた
孔２３ａを介してドレーンされる。したがって、左上部
と右下部のシリンダ室７．１０の油圧が高くなり、左側
の支持体６は下方へ、右側の支持体６は上方へそれぞれ
移動する。これに伴ってパワーローラ４に加わる接線方
向の力の向きが変わるので、左側のパワーローラ４と支
持体６とは右回り方向に回動し、右側のパワーローラ４
と支持体６とは左回り方向に回動する。すなわち、トロ
イダル変速部１は増速側へ移行する。そして、上記右側
の支持体６と一体に回動するプリシスカム２７は左回り
方向に回動し、ベルクランク２６を介してスプール２３
をポート３３が閉じられるまで左方へ押す、上記のよう
にしてトロイダル変速部１は所望の変速比まで制御され
、かつこの変速比で維持される。In the toroidal continuously variable transmission having the above configuration, when changing the gear ratio of the toroidal transmission section 1, first the sleeve 22 of the control valve 20 is moved by the actuator 25.
, for example, to the left in the figure. This will cause port 30
and 33 communicate with each other, and line pressure is supplied to the upper left and lower right cylinder chambers 7.10 via the oil passage 34, and the upper right and lower left cylinder chambers 9, 8 and the oil passage 32. The port 31 communicated through the spool 23 is drained through a hole 23a provided in the axial center of the spool 23. Therefore, the oil pressure in the upper left and lower right cylinder chambers 7.10 increases, and the left support 6 moves downward and the right support 6 moves upward. Along with this, the direction of the tangential force applied to the power roller 4 changes, so the left power roller 4 and support body 6 rotate clockwise, and the right power roller 4 rotates clockwise.
and the support body 6 rotate in the counterclockwise direction. That is, the toroidal transmission section 1 shifts to the speed increasing side. The precise cam 27, which rotates together with the right support 6, rotates counterclockwise, and the spool 23 is rotated through the bell crank 26.
is pushed to the left until the port 33 is closed. As described above, the toroidal transmission section 1 is controlled to a desired gear ratio and maintained at this gear ratio.
なお、上記実施例では、コントロールバルブ２０のスリ
ーブ２２を変速比制御装置のアクチュエータ２５によっ
て作動させ、スプール２３をプリシスカム２７に従動さ
せるようにしたが、これとは逆に、スプール２３を変速
比制御装置のアクチュエータ２５によって作動させ、ス
リーブ２２をプリシスカム２７に従動させてもよい。In the above embodiment, the sleeve 22 of the control valve 20 is actuated by the actuator 25 of the gear ratio control device, and the spool 23 is driven by the precise cam 27. However, conversely, the spool 23 is operated by the gear ratio control device. The actuator 25 of the device may actuate the sleeve 22 to follow the precise cam 27.
発明の効果
以上の説明で明らかなように、本発明によればコントロ
ールバルブをバルブボデーとスリーブとスプールとの３
層構造とすることによって、コントロールバルブを小型
化することができるとともに、可動部であるスリーブと
スプールとを軽量化できるので、振動や衝撃を受けても
スリーブとスリーブが慣性によって移動せず、したがっ
て変速位置が狂うことがない。Effects of the Invention As is clear from the above explanation, according to the present invention, the control valve is composed of a valve body, a sleeve, and a spool.
By adopting a layered structure, the control valve can be made smaller and the weight of the moving parts, the sleeve and spool, can be reduced, so even when subjected to vibration or impact, the sleeves do not move due to inertia. The gear shift position will not go out of order.
図面は本発明にかかるトロイダル形無段変速機の断面図
である。
１・・・トロイダル変速部、２・・・入力ディスク、３
・・・ハウジング、４・・・パワーローラ、６・・・支
持体、７〜１０・・・シリンダ室、２０・・・コントロ
ールバルブ、２１・・・バルブボデー、２２・・・スリ
ーブ、２３・・・スプール、２５・・・アクチュエータ
、２６・・・ベルクランク、２７・・・プリシスカム。The drawing is a sectional view of a toroidal continuously variable transmission according to the present invention. 1... Toroidal transmission section, 2... Input disk, 3
...Housing, 4...Power roller, 6...Support, 7-10...Cylinder chamber, 20...Control valve, 21...Valve body, 22...Sleeve, 23... ... Spool, 25... Actuator, 26... Bell crank, 27... Presiscam.
Claims (1)
で配置されたパワーローラと、パワーローラを回転自在
に支持し、軸方向に可動でかつ軸回りに回動可能な支持
体と、支持体の両端部に連設され、支持体を軸方向に作
動させるためのシリンダ室と、シリンダ室への油圧を制
御するコントロールバルブとを備えたトロイダル形無段
変速機において、上記コントロールバルブを、バルブボ
デーと、該バルブボデー内に摺動自在に挿入されたスリ
ーブと、該スリーブ内に摺動自在に挿入されたスプール
との３層構造とし、上記スリーブまたはスプールの一方
を変速比制御装置により作動させるとともに、他方を上
記支持体と一体に回動するプリシスカムに従動せしめた
ことを特徴とするトロイダル形無段変速機。(1) An input/output disk, a power roller placed in pressure contact between the input/output disks, a support that rotatably supports the power roller, is movable in the axial direction and rotatable around the axis, and a support In a toroidal continuously variable transmission that is provided with a cylinder chamber that is connected to both ends of the body and that operates the support body in the axial direction, and a control valve that controls hydraulic pressure to the cylinder chamber, the control valve is It has a three-layer structure consisting of a valve body, a sleeve slidably inserted into the valve body, and a spool slidably inserted into the sleeve, and one of the sleeve or spool is controlled by a gear ratio control device. 1. A toroidal continuously variable transmission characterized in that one of the toroidal continuously variable transmissions is operated and the other is driven by a precise cam that rotates integrally with the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24198584A JPS61119866A (en) | 1984-11-15 | 1984-11-15 | Toroidal type continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24198584A JPS61119866A (en) | 1984-11-15 | 1984-11-15 | Toroidal type continuously variable transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61119866A true JPS61119866A (en) | 1986-06-07 |
Family
ID=17082527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24198584A Pending JPS61119866A (en) | 1984-11-15 | 1984-11-15 | Toroidal type continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61119866A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0450495A2 (en) * | 1990-04-04 | 1991-10-09 | Nissan Motor Co., Ltd. | Continuously variable traction roller transmission with a hydraulic control system |
| US5136891A (en) * | 1990-05-22 | 1992-08-11 | Nissan Motor Co., Ltd. | Continuously variable traction roller transmission |
| US5187995A (en) * | 1991-03-26 | 1993-02-23 | Nissan Motor Co., Ltd. | Shift control system for continuously variable traction roller transmission |
| US5212997A (en) * | 1991-06-12 | 1993-05-25 | Nissan Motor Co., Ltd. | Friction roller type continuously variable transmission |
| US20130324355A1 (en) * | 2012-05-29 | 2013-12-05 | GM Global Technology Operations LLC | Containment control for a continuously variable transmission |
| DE102013209090B4 (en) | 2012-05-29 | 2022-03-31 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | Confinement control for a continuously variable transmission |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854262A (en) * | 1981-09-11 | 1983-03-31 | エクセラマテイツク・インコーポレーテツド | Variable speed gear for traction roller non-stage transmission controlled by precess-cam |
| JPS58160663A (en) * | 1982-03-18 | 1983-09-24 | Nippon Seiko Kk | Speed shifting device for toroidal stepless trasmission |
-
1984
- 1984-11-15 JP JP24198584A patent/JPS61119866A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854262A (en) * | 1981-09-11 | 1983-03-31 | エクセラマテイツク・インコーポレーテツド | Variable speed gear for traction roller non-stage transmission controlled by precess-cam |
| JPS58160663A (en) * | 1982-03-18 | 1983-09-24 | Nippon Seiko Kk | Speed shifting device for toroidal stepless trasmission |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0450495A2 (en) * | 1990-04-04 | 1991-10-09 | Nissan Motor Co., Ltd. | Continuously variable traction roller transmission with a hydraulic control system |
| US5136891A (en) * | 1990-05-22 | 1992-08-11 | Nissan Motor Co., Ltd. | Continuously variable traction roller transmission |
| US5187995A (en) * | 1991-03-26 | 1993-02-23 | Nissan Motor Co., Ltd. | Shift control system for continuously variable traction roller transmission |
| US5212997A (en) * | 1991-06-12 | 1993-05-25 | Nissan Motor Co., Ltd. | Friction roller type continuously variable transmission |
| US20130324355A1 (en) * | 2012-05-29 | 2013-12-05 | GM Global Technology Operations LLC | Containment control for a continuously variable transmission |
| CN103453135A (en) * | 2012-05-29 | 2013-12-18 | 通用汽车环球科技运作有限责任公司 | Containment control for a continuously variable transmission |
| US9212743B2 (en) * | 2012-05-29 | 2015-12-15 | Gm Global Technology Operations, Llc | Containment control for a continuously variable transmission |
| US10041589B2 (en) | 2012-05-29 | 2018-08-07 | GM Global Technology Operations LLC | Containment control for a continuously variable transmission |
| DE102013209090B4 (en) | 2012-05-29 | 2022-03-31 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | Confinement control for a continuously variable transmission |
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