JPS6188067A - Toroidal stepless speed change gear - Google Patents
Toroidal stepless speed change gearInfo
- Publication number
- JPS6188067A JPS6188067A JP20939084A JP20939084A JPS6188067A JP S6188067 A JPS6188067 A JP S6188067A JP 20939084 A JP20939084 A JP 20939084A JP 20939084 A JP20939084 A JP 20939084A JP S6188067 A JPS6188067 A JP S6188067A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- toroidal
- engine
- shaft
- spline
- 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
-
- 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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuously variable friction gearing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
Description
【発明の詳細な説明】
発明の分野
本発明はフロントエンジン・フロントドライブ式あるい
はリヤエンジン・リヤドライブ式の自動車用変速機とし
て好適な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 relates to a toroidal continuously variable transmission suitable as a front engine/front drive type or a rear engine/rear drive type automobile transmission.
従来技術とその問題点
従来、例えば特公昭４７−１２４２号公報に記載のよう
に、同一軸線上に配置された入出力ディスクの対向面に
それぞれ円環溝を設け、該円環溝の間に複数のローラを
配置してなるトロイダル変速部と、第１．第２の係合駆
動装置とを備え、上記ローラの傾きを変えることによっ
て変速比を可変とし、かつ前後進の切換を行うようにし
たトロイダル形無段変速機が知られている。Prior art and its problems Conventionally, for example, as described in Japanese Patent Publication No. 47-1242, annular grooves are provided on opposing surfaces of input and output disks arranged on the same axis, and a groove is formed between the annular grooves. a toroidal transmission section including a plurality of rollers; A toroidal continuously variable transmission is known, which is equipped with a second engagement drive device, has a variable gear ratio by changing the inclination of the roller, and can switch between forward and forward motion.
ところが、上記トロイダル形無段変速機はフロントエン
ジン・リヤドライブ式自動車に通用されるものであり、
トロイダル変速部および第１．第２の係合駆動装置が直
列に配置されているため、軸方向寸法が長くなり、フロ
ントエンジン・フロントドライブ式あるいはリヤエンジ
ン・リヤドライブ式（以下、単にＦＦ式あるいはＲＲ式
という）の自動車用変速機としては通さない。また、Ｆ
Ｆ式あるいはＲＲ式自動車の場合には、ディファレンシ
ャル装置がエンジンと変速機とのほぼ中間位置に配置さ
れている関係上、上記のように直列配置とした場合には
、トロイダル変速部の出力軸をカウンタ軸などを介して
トロイダル変速部から迂回させ、かつエンジン側へ逆戻
りさせた構成としなければならず、軸構成ならびに軸配
置が複雑化かつ長大化する欠点がある。However, the toroidal continuously variable transmission described above is commonly used in front-engine, rear-drive automobiles.
The toroidal transmission section and the first. Since the second engagement drive device is arranged in series, the axial dimension is long, and it is suitable for front engine/front drive type or rear engine/rear drive type (hereinafter simply referred to as FF type or RR type) automobiles. It cannot be used as a transmission. Also, F
In the case of F-type or RR-type automobiles, the differential device is located approximately midway between the engine and transmission, so when they are arranged in series as described above, the output shaft of the toroidal transmission section is It must be detoured from the toroidal transmission section via a countershaft or the like and returned to the engine side, which has the drawback of making the shaft configuration and shaft arrangement complicated and long.
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、軸方向寸法を短縮するとともに、ディファ
レンシャル装置への動力伝達経路を短縮化し、ＦＦ式あ
るいはＲＲ式の自動車用変速機として好適なトロイダル
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 which has a shortened axial dimension and a shortened power transmission path to a differential device, and which is suitable as an FF or RR type automobile transmission.
発明の構成
上記目的を達成するために、本発明は、エンジンと連結
された入力ディスクを出力ディスクに対しエンジンとは
反対側に配置し、エンジンとトロイダル変速部との中間
に、上記出力ディスクと接続された前後進切換機構を配
置したものである。Structure of the Invention In order to achieve the above object, the present invention arranges an input disk connected to an engine on the opposite side of the output disk from the engine, and provides an input disk connected to the output disk between the engine and the toroidal transmission section. It is equipped with a connected forward/reverse switching mechanism.
すなわち、トロイダル変速部の出力ディスクをエンジン
側に配置し、この出力ディスクをエンジンとトロイダル
変速部との中間に配置した前後進切換機構に逆戻りして
接続することによって、前後進切換機構をディフルンシ
ャル装置の近傍に配置できるようにし、ＦＦ式あるいは
ＲＲ式の無段変速機として極めて合理的な構成としたも
のである。In other words, by arranging the output disk of the toroidal transmission section on the engine side, and connecting this output disk backwards to the forward/reverse switching mechanism located between the engine and the toroidal transmission section, the forward/reverse switching mechanism can be turned into a diffraction mechanism. It is designed so that it can be placed near the mechanical device, and has an extremely rational configuration as an FF type or RR type continuously variable transmission.
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をＦＦ式
あるいはＲＲ式自動車に適用した一例を示し、エンジン
１と連結された入力軸２の途中には、発進用および前後
進切換時における動力断続用のクラッチ３が設けられて
いる。DESCRIPTION OF THE EMBODIMENTS The drawing shows an example in which the toroidal continuously variable transmission according to the present invention is applied to a FF or RR type automobile. A clutch 3 is provided for power on/off at certain times.
入力軸２の端部にはトロイダル変速部４０入力ディスク
５が連結されている。このトロイダル変速部４は、周知
のとおり、同一軸線上に配置された入力ディスク５およ
び出力ディスク６と、両ディスク５．６の対向面に形成
した円環溝５ａ、６ａの間に配置した複数のローラ７と
で構成されており、上記ローラ７を紙面に垂直な、支軸
７ａを中心に回転させることにより、入出力ディスク５
゜６の有効径が変化し、変速比を無段階に変化させるこ
とかできる。上記入力ディスク５は出力ディスク６に対
しエンジン１とは反対側に配置されており、出力ディス
ク６の中央部に連結された出力軸８は上記入力軸２の外
周に回動自在に挿通されている。An input disk 5 of a toroidal transmission section 40 is connected to an end of the input shaft 2. As is well known, this toroidal transmission section 4 consists of an input disk 5 and an output disk 6 arranged on the same axis, and a plurality of annular grooves 5a and 6a formed on opposing surfaces of both disks 5.6. By rotating the roller 7 about a support shaft 7a perpendicular to the plane of the paper, the input/output disk 5 is rotated.
The effective diameter of 6 degrees changes, and the gear ratio can be changed steplessly. The input disk 5 is placed on the opposite side of the output disk 6 from the engine 1, and the output shaft 8 connected to the center of the output disk 6 is rotatably inserted through the outer periphery of the input shaft 2. There is.
上記トロイダル変速部４とエンジン１との間には減速機
構を兼ねる前後進切換機構９が配置されており、この前
後進切換機構９はトロイダル変速部４の出力軸８と接続
されている。すなわち、出力軸８の端部には前進用歯車
ｌＯと後進用歯車１１とが装着されており、前進用歯車
１０はアイドルギヤ１２を介して減速軸１３に設けた前
進用歯車１４と噛み合っており、一方後進用歯車１１は
減速軸１３に設けた後進用歯車１５と直接噛み合ってい
る。上記前進用歯車１４と後進用歯車１５は減速軸１３
に対し回動自在であり、これら歯車１４．１５には一体
にスプライン歯車１４ａ、１５ａが設けられている。ま
た、前進用歯車１４と後進用歯車１５との中間位置には
、減速軸１３に固定されたスプラインハブ１６が設けら
れており、このスプラインハブ１６と上記スプライン歯
車１４ａ、１５ａとの外周には前後進切換用のスリーブ
１７が摺動自在にスプライン係合している。そして、こ
のスリーブ１７を図中右側に作動させれば、前進用歯車
１４とスプラインハブ１６とが連結され、後進用歯車１
５は回動自在となり、反対にスリーブ１７を図中左側に
作動させれば、後進用歯車１５とスプラインハブ１６と
が連結され、前進用歯車１４が回動自在となる。A forward/reverse switching mechanism 9 that also serves as a speed reduction mechanism is disposed between the toroidal transmission section 4 and the engine 1, and the forward/reverse switching mechanism 9 is connected to the output shaft 8 of the toroidal transmission section 4. That is, a forward gear lO and a reverse gear 11 are attached to the end of the output shaft 8, and the forward gear 10 meshes with a forward gear 14 provided on a reduction shaft 13 via an idle gear 12. On the other hand, the reverse gear 11 directly meshes with a reverse gear 15 provided on the reduction shaft 13. The forward gear 14 and the reverse gear 15 are connected to the reduction shaft 13
These gears 14 and 15 are integrally provided with spline gears 14a and 15a. Further, a spline hub 16 fixed to the reduction shaft 13 is provided at an intermediate position between the forward gear 14 and the reverse gear 15, and the outer periphery of the spline hub 16 and the spline gears 14a and 15a is A sleeve 17 for switching forward and backward movement is slidably engaged with a spline. If this sleeve 17 is operated to the right in the figure, the forward gear 14 and the spline hub 16 are connected, and the reverse gear 1
5 becomes freely rotatable. Conversely, if the sleeve 17 is operated to the left in the figure, the reverse gear 15 and the spline hub 16 are connected, and the forward gear 14 becomes freely rotatable.
上記減速軸１３の端部には歯車１８が装着されており、
この歯車１８は前後進切換機構９の近傍に配置されてい
るディファレンシャル装置１９の歯車２０と噛み合い、
動力をアクスルシャフト２１に伝達している。A gear 18 is attached to the end of the reduction shaft 13,
This gear 18 meshes with a gear 20 of a differential device 19 located near the forward/reverse switching mechanism 9.
Power is transmitted to the axle shaft 21.
上記構成のトロイダル形無段変速機において、車両を前
進させる場合には、スリーブ１７を図中右側に作動させ
ればよい、これによって、入力軸２の動力はトロイダル
変速部４、出力軸８、前進用歯車ｌＯ、アイドルギヤ１
２、前進用歯車１４、減速軸１３および歯車１８を介し
てディファレンシャル装置１９に伝達され、入力軸２と
アクスルシャフト２１とは同方向に回転するので、車両
を前進させることができる。In the toroidal continuously variable transmission having the above configuration, when the vehicle is to be moved forward, the sleeve 17 may be operated to the right in the figure. As a result, the power of the input shaft 2 is transferred to the toroidal transmission section 4, the output shaft 8, Forward gear lO, idle gear 1
2. It is transmitted to the differential device 19 via the forward gear 14, the reduction shaft 13, and the gear 18, and the input shaft 2 and the axle shaft 21 rotate in the same direction, so that the vehicle can be moved forward.
一方、車両を後退させる場合には、スリーブ１７を図中
左側に作動させる。これにより、入力軸２の動力はトロ
イダル変速部４、出力軸８、後進用歯車１１，１５、減
速軸１３および歯車１８を介してディファレンシャル装
置１９に伝達され、入力軸２とアクスルシャフト２１と
は逆方向に回転するので、車両を後退させることができ
る。On the other hand, when moving the vehicle backward, the sleeve 17 is moved to the left in the figure. As a result, the power of the input shaft 2 is transmitted to the differential device 19 via the toroidal transmission section 4, the output shaft 8, the reverse gears 11, 15, the reduction shaft 13, and the gear 18, and the input shaft 2 and the axle shaft 21 are Since it rotates in the opposite direction, the vehicle can be moved backwards.
なお、本発明における前後進切換機構９としては、上記
実施例のものに限らず、いかなる構成としてもよい０例
えば、上記実施例では前進用歯車１０．１４の間にアイ
ドルギヤ１２を設けたが、アイドルギヤ１２に代えてチ
ェーンを用いてもよい。また、前後進の切換をスプライ
ン歯車１４ａ、１５ａとスプラインハブ１６との外周に
スプライン係合するスリーブ１７で行うものに限らず、
油圧クラッチを用いてもよい。Note that the forward/reverse switching mechanism 9 in the present invention is not limited to that of the above embodiment, and may have any configuration. For example, in the above embodiment, the idle gear 12 was provided between the forward gears 10 and 14. , a chain may be used instead of the idle gear 12. Furthermore, the invention is not limited to the one in which forward and backward switching is performed by the sleeve 17 that is spline engaged with the outer periphery of the spline gears 14a, 15a and the spline hub 16.
A hydraulic clutch may also be used.
発明の効果
以上の説明で明らかなように、本発明によればトロイダ
ル変速部の出力をエンジンとトロイダル変速部との中間
に配置した前後進切換機構に伝達するようにしたので、
前後進切換機構をディファレンシャル装置の近傍に配置
することができ、ディファレンシャル装置への動力伝達
経路を短縮化かつ簡素化できる。したがって、軸方向寸
法に制約のあるＦＦ式あるいはＲＲ式の変速機として極
めて合理的な構成とすることができる。Effects of the Invention As is clear from the above explanation, according to the present invention, the output of the toroidal transmission section is transmitted to the forward/reverse switching mechanism disposed between the engine and the toroidal transmission section.
The forward/reverse switching mechanism can be placed near the differential device, and the power transmission path to the differential device can be shortened and simplified. Therefore, it is possible to provide an extremely rational configuration for an FF type or RR type transmission that has restrictions on axial dimensions.
図面は本発明にかかるトロイダル形無段変速機の一例の
概略構成図である。
１・・・エンジン、２・・・入力軸、４・・・トロイダ
ル変速部、５・・・入力ディスク、６・・・出力ディス
ク、５ａ、６ａ・・・円環溝、７・・・ローラ、８・・
・出力軸、９・・・前後進切換ｔａ ｔｉ、１９・・・
ディファレンシャル。The drawing is a schematic diagram of an example of a toroidal continuously variable transmission according to the present invention. DESCRIPTION OF SYMBOLS 1... Engine, 2... Input shaft, 4... Toroidal transmission part, 5... Input disk, 6... Output disk, 5a, 6a... Annular groove, 7... Roller , 8...
・Output shaft, 9... Forward/forward switching ta ti, 19...
differential.
Claims (1)
にそれぞれ円環溝を設け、該円環溝の間に複数のローラ
を配置してなるトロイダル変速部を備えたトロイダル形
無段変速機において、エンジンと連結された上記入力デ
ィスクを出力ディスクに対しエンジンとは反対側に配置
し、エンジンとトロイダル変速部との中間に、上記出力
ディスクと接続された前後進切換機構を配置したことを
特徴とするトロイダル形無段変速機。(1) A toroidal type continuously variable transmission equipped with a toroidal transmission section in which annular grooves are provided on opposing surfaces of input and output disks arranged on the same axis, and a plurality of rollers are arranged between the annular grooves. In the machine, the input disk connected to the engine is arranged on the opposite side of the output disk from the engine, and the forward/reverse switching mechanism connected to the output disk is arranged between the engine and the toroidal transmission section. A toroidal continuously variable transmission featuring
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20939084A JPS6188067A (en) | 1984-10-05 | 1984-10-05 | Toroidal stepless speed change gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20939084A JPS6188067A (en) | 1984-10-05 | 1984-10-05 | Toroidal stepless speed change gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6188067A true JPS6188067A (en) | 1986-05-06 |
Family
ID=16572108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20939084A Pending JPS6188067A (en) | 1984-10-05 | 1984-10-05 | Toroidal stepless speed change gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6188067A (en) |
-
1984
- 1984-10-05 JP JP20939084A patent/JPS6188067A/en active Pending
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