TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION

• Main Authors: SUZUKI EISAKU, INOUE TOMOHIRO
• Format: Patent
• Language: English; Japanese
• Published: 24.12.2015
• Subjects: BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a toroidal continuously variable transmission capable of sealing a gap between a first disc and a shaft oil-tightly without forming a groove in the first disc or the shaft for fitting the seal member in a case of including a pressure device that includes a hydraulic chamber on a back surface of the first disc.SOLUTION: A seal 201 with lips 201b and 201c is provided on an input-side disc (first disc) 2 and the lips 201b and 201c of the seal 201 slidably contact an outer circumferential surface of an input shaft 1 oil-tightly. With this configuration, it is possible to seal a gap between the input-side disc 2 and the input shaft 1 oil-tightly without forming a groove in the input-side disc 2 or the input shaft 1 for fitting a seal member. Owing to this, there is no need to provide the groove in the input-side disc 2 or the input shaft 1 for fitting a conventional seal member, so that it is possible to prevent the generation of a stress resulting from the groove and to increase the strengths of the input-side disc 2 and the input shaft 1. 【課題】第１ディスクの背面側に油圧室を有する押圧装置を有する場合に、第１ディスクや軸にシール部材を嵌め込むための溝部を形成しなくても、第１ディスクと軸との間を油密にシールできるトロイダル型無段変速機を提供する。【解決手段】入力側ディスク（第１ディスク）２にリップ付きシール２０１が設けられ、このリップ付きシール２０１のリップ２０１ｂ，２０１ｃが入力軸１の外周面に油密に摺接するので、入力側ディスク２や入力軸１にシール部材を嵌め込むための溝部を形成しなくても、入力側ディスク２と入力軸１との間を油密にシールできる。このため、従来のようなシール部材を嵌め込むための溝部を入力側ディスク２や入力軸１に設ける必要がないので、この溝部に起因する応力の発生はなく、入力側ディスク２や入力軸１の強度を高めることができる。【選択図】図１