JP2003130161A5

JP2003130161A5 -

Info

Publication number: JP2003130161A5
Application number: JP2001329088A
Authority: JP
Filing date: 2001-10-26
Publication date: 2005-06-09
Anticipated expiration: 2021-10-26

Description

出力側ディスク３Ａ，３Ｂは、入力軸１との間に介在されたニードル軸受５，５によって、入力軸１の軸線Ｏを中心に回転自在に支持されている。また、入力側ディスク２Ａ，２Ｂは、入力軸１と共に回転するように、その入力軸１の両端部にボールスプライン６，６を介して支持されている。また、入力側ディスク２Ａ，２Ｂの内面（凹面）２ａ，２ａと出力側ディスク３Ａ，３Ｂの内面（凹面）３ａ，３ａとの間には、パワーローラ１１が回転自在に挟持されている。 The output side disks 3A, 3B are rotatably supported around the axis O of the input shaft 1 by needle bearings 5, 5 interposed between the output side disks 3A, 3B. Further, the input side disks 2A and 2B are supported at both ends of the input shaft 1 via ball splines 6 and 6 so as to rotate together with the input shaft 1. The power roller 11 is rotatably held between the inner surfaces (concave surfaces) 2a and 2a of the input side disks 2A and 2B and the inner surface (concave surfaces) 3a and 3a of the output side disks 3A and 3B.

【００１６】
【課題を解決するための手段】
前記課題を解決するために、請求項１に記載された発明は、回転力が入力される入力軸と、前記入力軸に結合されて入力軸と一体で回転する入力側ディスクと、前記入力側ディスクの回転力がパワーローラを介して伝達される出力側ディスクと、各入出力側ディスクとパワーローラとの当接部に押圧力を付与する押圧装置と、押圧装置の押圧力を補う予圧付与装置とを備えたトロイダル型無段変速機において、前記予圧付与装置は、入力軸に締結されたナット部材と、予圧を付与する弾性部材とを有し、前記ナット部材は、前記入力軸に設けられた第１の段差部に当接されて軸方向に位置決めされ、前記ナット部材および前記入力側ディスクの少なくとも一方には第２の段差部が設けられ、前記予圧付与装置の前記弾性部材、または、前記弾性部材の隙間を調整するシムは、前記第２の段差部によって支持されつつ、前記入力側ディスクと前記ナット部材との間に介挿されていることを特徴とする。
[0016]
[Means for Solving the Problems]
In order to solve the above problems, the invention described in claim 1 is an input shaft to which a rotational force is input, an input side disk which is coupled to the input shaft and rotates integrally with the input shaft, and the input side. An output side disc to which the rotational force of the disc is transmitted through the power roller, a pressing device for applying a pressing force to the contact portion between each input / output side disk and the power roller, and a preloading force supplementing the pressing force of the pressing device In the toroidal type continuously variable transmission provided with a device, the preload applying device has a nut member fastened to an input shaft and an elastic member for applying a preload, and the nut member is provided on the input shaft A second stepped portion is provided on at least one of the nut member and the input-side disc, and the elastic member of the preload applying device, or , Said bullet Shims to adjust the gap between the members, while being supported by said second step, characterized in that it is interposed between the nut member and the input side disk.

Claims

An input shaft to which a rotational force is input, an input side disk coupled to the input shaft and integrally rotating with the input shaft, and an output side disk to which the rotational force of the input side disk is transmitted through a power roller. A toroidal continuously variable transmission comprising a pressing device for applying a pressing force to a contact portion between each input / output side disk and a power roller, and a preload applying device for compensating the pressing force of the pressing device .
The preload applying device includes a nut member fastened to the input shaft and an elastic member that applies a preload.
The nut member is axially positioned while being in contact with a first stepped portion provided on the input shaft.
A second stepped portion is provided on at least one of the nut member and the input side disc,
The elastic member of the preload application device or a shim for adjusting a gap of the elastic member is interposed between the input-side disc and the nut member while being supported by the second step portion. A toroidal type continuously variable transmission characterized by

When the nut member is positioned at the first step portion of the input shaft, a predetermined gap is formed between the input-side disc and the nut member. The toroidal type continuously variable transmission according to claim 1.

The toroidal continuously variable transmission according to claim 2, wherein the gap is set smaller than an initial gap of the elastic member.