JPS6199758A - Toroidal type continuously variable transmission - Google Patents
Toroidal type continuously variable transmissionInfo
- Publication number
- JPS6199758A JPS6199758A JP22027384A JP22027384A JPS6199758A JP S6199758 A JPS6199758 A JP S6199758A JP 22027384 A JP22027384 A JP 22027384A JP 22027384 A JP22027384 A JP 22027384A JP S6199758 A JPS6199758 A JP S6199758A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- toroidal
- gear
- transmission shaft
- output
- 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 continuous variable friction gearing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (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ｖｊｔ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. The vehicle is equipped with a toroidal transmission section having a plurality of rollers arranged therein, and first and second engagement drive devices, and by changing the inclination of the rollers, the transmission ratio can be varied and forward and backward switching can be performed. A toroidal type non-VJT transmission is known.
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、軸寸
法に制約のあるフロントエンジン・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Ｆ
Ｆ式あるいはＲＲ式という）の自動車には通用しにくい
。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 becomes long, and the axial dimension is limited by front engine/front drive type or rear engine/rear drive type (hereinafter simply referred to as F
It is difficult to apply to F-type or RR-type cars.
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、軸方向寸法をできるだけ短縮して、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 suitable for use as an FF or RR type automobile transmission by reducing the axial dimension as much as possible.
発明の構成
上記目的を達成するために、本発明は、トロイダル変速
部の径方向外側に、トロイダル変速部の軸線と平行に伝
動軸を設け、該伝動軸を介して出力するようにしたもの
である。Structure of the Invention In order to achieve the above object, the present invention provides a transmission shaft parallel to the axis of the toroidal transmission section on the outside in the radial direction of the toroidal transmission section, and outputs the power through the transmission shaft. be.
すなわち、トロイダル変速部の径方向外側に形成される
スペースに出力用の伝動軸を配置することにより、トロ
イダル変速部の径方向外側の無駄なスペースを有効利用
して軸方向寸法を短縮し、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 power transmission shaft in the space formed on the radial outside of the toroidal transmission section, the wasted space on the radial outside of the toroidal transmission section is effectively used to shorten the axial dimension, and the FF This is an extremely rational configuration for a continuously variable transmission of type or RR type.
実施例の説明
第１図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式出自動車通用した一例を示し、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 EMBODIMENTS FIG. 1 shows a toroidal continuously variable transmission according to the present invention.
This is an example of a type or RR type that is commonly used in automobiles, and a clutch 3 is provided in the middle of an input shaft 2 connected to an engine 1 for starting and for connecting/disconnecting power when switching forward or backward.
入力軸２の端部にはトロイダル変速部４の入力ディスク
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ｉ１！ｉ５ａ、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のを動径が変化し、変速比を無段階に変化させ
ることができる。上記出力ディスク６は入力ディスク５
に対しエンジン１側に配置されており、この出力ディス
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、こ 。An input disk 5 of a toroidal transmission section 4 is connected to an end of the input shaft 2. As is well known, this toroidal transmission section 4 includes an input disk 5 and an output disk 6 arranged on the same axis, and an annular ring i1 formed on the opposing surfaces of both disks 5.6. It is composed of a plurality of rollers 7 arranged between i5a and 6a, and by rotating the rollers 7 about a support shaft 7a perpendicular to the plane of the paper, the radius vector of the input/output disk 5°6 changes. However, the gear ratio can be changed steplessly. The above output disk 6 is the input disk 5
The output shaft 8, which is disposed on the engine 1 side and connected to the center of the output disk 6, is rotatably inserted through the outer periphery of the input shaft 2.
の出力軸８の端部には出力歯車９が固定されている。An output gear 9 is fixed to the end of the output shaft 8.
上記トロイダル変速部４の径方向外側には、トロイダル
変速部４の軸線と平行な第１伝動軸ｌＯと第２伝動軸１
７とが配置されており、第１伝動軸ｌＯには減速機構を
兼ねる前後進切換機構１１が設けられている。この前後
進切換機構１０は、第１伝動軸１０に対し回動自在な前
進用歯ｉ１２および後進用歯車１３と、第１伝動軸１０
に固定されたスプラインハブ１４および歯車１５と、上
記前進用歯車１２および後進用歯車１３に一体に設けた
スプライン歯車１２ａ、１３ａと上記スプラインハブ１
４とにスプライン係合する前後進切換用スリーブ１６と
で構成されている。そして、上記スリーブ１６を軸方向
に摺動させることにより、前後進の切り換えを行うこと
ができる。上記出力歯車９は第２伝動軸１７に設けた歯
車１８゜１９を介して前進用歯車１２と噛み合うととも
に、後進用歯車１３とは直接噛み合っている。したがっ
て、トロイダル変速部４の出力は上記第１゜第２伝動軸
１０．１７を介して伝達される。A first transmission shaft lO and a second transmission shaft 1 parallel to the axis of the toroidal transmission section 4 are disposed on the radially outer side of the toroidal transmission section 4.
7 is arranged, and the first transmission shaft lO is provided with a forward/reverse switching mechanism 11 that also serves as a speed reduction mechanism. This forward/reverse switching mechanism 10 includes a forward gear i12 and a reverse gear 13 that are rotatable with respect to the first transmission shaft 10, and
spline hub 14 and gear 15 fixed to spline hub 1, spline gears 12a and 13a integrally provided to forward gear 12 and reverse gear 13, and spline hub 1
4 and a forward/reverse switching sleeve 16 spline-engaged. By sliding the sleeve 16 in the axial direction, it is possible to switch between forward and backward movement. The output gear 9 meshes with the forward gear 12 via gears 18 and 19 provided on the second transmission shaft 17, and directly meshes with the reverse gear 13. Therefore, the output of the toroidal transmission section 4 is transmitted through the first and second transmission shafts 10.17.
第１伝動軸１０の端部に固定した歯車１５は、前後進切
換機構１１の近傍に配置されているディファレンシャル
装置２０の歯車２１と噛み合い、動力をアクスルシャフ
ト２２に伝達している。A gear 15 fixed to the end of the first transmission shaft 10 meshes with a gear 21 of a differential device 20 disposed near the forward/reverse switching mechanism 11 to transmit power to the axle shaft 22.
上記構成のトロイダル形無段変速機において、第１伝動
軸１０および第２伝動軸１７がトロイダル変速部４の径
方向外側に配置されているので、トロイダル変速部４の
出力を軸方向寸法を増大させずにディファレンシャル装
置２０へと伝ｉｌすることができる。したがって、軸方
向寸法に制約のあるＦＦ式あるいはＲＲ式出自動車変速
機として好適な構成とすることができる。特に、上記実
施例では、出力軸８をトロイダル変速部４からエンジン
１側に突設したので、トロイダル変速部４に対しエンジ
ン１とは反対側には何ら動力伝達手段が配置されておら
ず、軸方向寸法を最も短縮できる。In the toroidal continuously variable transmission having the above configuration, the first transmission shaft 10 and the second transmission shaft 17 are arranged radially outward of the toroidal transmission section 4, so that the output of the toroidal transmission section 4 can be increased in axial dimension. It is possible to transmit the information to the differential device 20 without having to do so. Therefore, it is possible to provide a configuration suitable for an FF type or RR type automobile transmission with restrictions on axial dimensions. In particular, in the above embodiment, since the output shaft 8 is provided protruding from the toroidal transmission section 4 toward the engine 1, no power transmission means is disposed on the opposite side of the toroidal transmission section 4 from the engine 1. The axial dimension can be shortened the most.
第２図は本発明の第２実施例を示す、上記第１実施例で
は、出力ディスク６に連結した出力歯車９が前進用歯車
１２と後進用歯車１３との双方に噛み合う場合を示した
が、この第２実施例では、出力歯車９はアイドルギヤ２
３を介して前進用歯車１２とのみ噛み合い、後進用歯車
１３とは噛み合っていない、この後進用歯車１３は、入
力ディスク５に一体に形成した歯車２４と第３伝動軸、
２５に設けた歯車２６．２７を介して噛み合っており、
第３伝動軸２５はトロイダル変速部４の径方向外側でか
つトロイダル変速部４の軸線と平行に配置されている。FIG. 2 shows a second embodiment of the present invention. In the first embodiment, the output gear 9 connected to the output disk 6 meshes with both the forward gear 12 and the reverse gear 13. , in this second embodiment, the output gear 9 is the idle gear 2
This reverse gear 13, which meshes only with the forward gear 12 through the gear 3 and does not mesh with the reverse gear 13, has a gear 24 formed integrally with the input disk 5, a third transmission shaft,
They mesh through gears 26 and 27 provided in 25,
The third transmission shaft 25 is disposed radially outward of the toroidal transmission section 4 and parallel to the axis of the toroidal transmission section 4 .
第２実施例においては、後退時に入力軸２の動力が、入
力ディスク５から第３伝動軸２５を介して後進用歯車１
３に伝達される。すなわち、後退時にトロイダル変速ｓ
４を経由せずに動力伝達されるため、後退時における伝
達効率が向上し、かつローラフの制御が不要となり、制
御を簡素化できるという利点がある。In the second embodiment, when reversing, the power of the input shaft 2 is transmitted from the input disk 5 to the reversing gear 1 through the third transmission shaft 25.
3. In other words, when reversing, the toroidal shift s
Since the power is transmitted without going through 4, the transmission efficiency during reversing is improved, and there is no need to control the roller luff, which has the advantage of simplifying the control.
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
ル変速部の径方向外側のスペースに伝動軸を配置し、こ
の伝動軸を介して出力するようにしたので、それだけ変
速機の軸方向寸法を短縮でき、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 transmission shaft is arranged in the space outside the toroidal transmission section in the radial direction, and the output is transmitted through this transmission shaft, so that the transmission The axial dimension can be shortened, and the structure can be extremely rational as an FF type or RR type transmission that has restrictions on the axial dimension.
第１図、第２図はそれぞれ本発明にかかるトロイダル形
無段変速機の第１実施例および第２実施例の概略構成図
である。
１・・・エンジン、２・・・人力軸、４・・・トロイダ
ル変速部、５・・・入力ディスク、６・・・出力ディス
ク、５ａ、５ａ・・・円環溝、７・・・ローラ、８・・
・出力軸、１０．１７．２５・・・伝動軸、１１・・・
前後進切換機構、２０・・・ディファレンシャル装置。1 and 2 are schematic configuration diagrams of a first embodiment and a second embodiment of a toroidal continuously variable transmission according to the present invention, respectively. DESCRIPTION OF SYMBOLS 1... Engine, 2... Human power shaft, 4... Toroidal transmission part, 5... Input disk, 6... Output disk, 5a, 5a... Annular groove, 7... Roller , 8...
・Output shaft, 10.17.25... Transmission shaft, 11...
Forward/forward switching mechanism, 20...differential device.
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、上記トロイダル変速部の径方向外
側に、トロイダル変速部の軸線と平行に伝動軸を設け、
該伝動軸を介して出力するように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, a transmission shaft is provided radially outward of the toroidal transmission section in parallel with the axis of the toroidal transmission section,
A toroidal continuously variable transmission characterized in that output is output via the transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22027384A JPS6199758A (en) | 1984-10-18 | 1984-10-18 | Toroidal type continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22027384A JPS6199758A (en) | 1984-10-18 | 1984-10-18 | Toroidal type continuously variable transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6199758A true JPS6199758A (en) | 1986-05-17 |
Family
ID=16748588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22027384A Pending JPS6199758A (en) | 1984-10-18 | 1984-10-18 | Toroidal type continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6199758A (en) |
-
1984
- 1984-10-18 JP JP22027384A patent/JPS6199758A/en active Pending
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