JP2000257685A5

JP2000257685A5 -

Info

Publication number: JP2000257685A5
Application number: JP1999059971A
Authority: JP
Filing date: 1999-03-08
Publication date: 2005-08-18
Anticipated expiration: 2019-03-08

Description

【００２２】
【課題を解決するための手段】
前記課題を解決し目的を達成するために、請求項１に記載の本発明のトロイダル形無段変速装置は、駆動源により回転駆動される入力軸と、前記入力軸に連動して回転する入力ディスクと、前記入力ディスクに相対して配された出力ディスクと、前記入力ディスクと出力ディスクとの間に揺動自在に設けられたパワーローラと、前記入力ディスクと出力ディスクとを互いに近づける方向に前記入力ディスクと出力ディスクとのうち少なくとも一方を押圧する押圧機構と、を備え、前記押圧機構は、加圧油が供給されるシリンダ部と、前記加圧油によって前記入力ディスクと出力ディスクとのうち少なくとも一方を押圧するピストン部とを備えたトロイダル形無段変速装置において、前記駆動源と入力軸との間に設けられ、前記駆動源からの回転駆動力を入力軸に伝達する動力伝達部を備え、前記動力伝達部は、前記駆動源により回転駆動される第１の噛み合わせ部と、前記入力軸と連動して回転するとともに前記第１の噛み合わせ部と互いに噛み合う第２の噛み合わせ部と、を備え、かつ前記第２の噛み合わせ部が入力軸からその径方向に離れた位置に配されたことを特徴としている。 0022.
[Means for solving problems]
In order to solve the above problems and achieve the object, the toroidal type stepless transmission according to claim 1 has an input shaft that is rotationally driven by a drive source and an input that rotates in conjunction with the input shaft. The disc, the output disc arranged relative to the input disc, the power roller oscillatingly provided between the input disc and the output disc, and the input disc and the output disc in the direction of bringing them closer to each other. A pressing mechanism for pressing at least one of the input disc and the output disc is provided, and the pressing mechanism includes a cylinder portion to which the pressurized oil is supplied and the input disc and the output disc by the pressurized oil. In a toroidal stepless speed changer including a piston portion that presses at least one of them, a power transmission unit provided between the drive source and an input shaft and transmitting a rotational driving force from the drive source to the input shaft. wherein the power transmission unit, said a first engagement portion which is rotated by a driving source, said input shaft rotates in conjunction with the biting both of the second meshing with each other and said first engagement portion It is characterized in that it is provided with a mating portion, and the second meshing portion is arranged at a position separated from the input shaft in the radial direction thereof.

トラニオン８とパワーローラ１０との間に、パワーローラ軸受として機能するスラスト玉軸受１１が設けられている。スラスト玉軸受１１は入力ディスク２ａ，２ｂ及び出力ディスク３ａ，３ｂからパワーローラ１０に加わるスラスト方向の荷重を支承し、かつパワーローラ１０の回転を許容する。スラスト玉軸受１１を構成する複数個の玉１２は、円環状の保持器１４によって保持されている。保持器１４は、トラニオン８側に設けた円環状の外輪１３と、回転部としてのパワーローラ１０との間に設けられている。 A thrust ball bearing 11 that functions as a power roller bearing is provided between the trunnion 8 and the power roller 10. The thrust ball bearing 11 bears the load applied to the power roller 10 from the input disks 2a and 2b and the output disks 3a and 3b in the thrust direction, and allows the power roller 10 to rotate. The plurality of balls 12 constituting the thrust ball bearing 11 are held by an annular cage 14. The cage 14 is provided between the annular outer ring 13 provided on the trunnion 8 side and the power roller 10 as a rotating portion.

Claims

An input shaft that is rotationally driven by a drive source;
An input disk that rotates in conjunction with the input shaft;
An output disk disposed relative to the input disk;
A power roller swingably provided between the input disk and the output disk;
A pressing mechanism that presses at least one of the input disk and the output disk in a direction in which the input disk and the output disk are brought close to each other;
In the toroidal continuously variable transmission, the pressing mechanism includes a cylinder portion to which pressurized oil is supplied, and a piston portion that presses at least one of the input disk and the output disk by the pressurized oil.
A power transmission unit that is provided between the drive source and the input shaft and transmits a rotational driving force from the drive source to the input shaft;
The power transmission unit includes a first engagement portion which is rotated by the driving source, rotates in association with the input shaft and the second engagement portion together intermesh with the first engagement portion , And the second meshing portion is disposed at a position away from the input shaft in the radial direction thereof.