Toroidal type continuously variable transmission and method for manufacturing trunnion for such a transmission

Transmission continue de vitesse du type torique ainsi qu'un procédé de fabrication d'un tourillon pour une telle transmission

Stufenloses Toroidgetriebe und Herstellungsverfahren für einen Drehzapfen eines solchen Toroidgetriebes

Abstract

A toroidal type continuously variable transmission includes trunnions (4) formed with shoulder portions (40) which oppose an upper link (5) and a lower link (6), and projections (50) on the links (5, 6) which can slide on the shoulder portions (40) when the links (5, 6) perform swinging movement. Along with forming the trunnions (4) in single units by forging, step portions (4B) are arranged between the shoulder portions (40) and sloping portions (45) of the offset portions (4A). Planar portions (40A) are formed in the shoulder portions (40) which can slide on the projections (50) by cutting or grinding so that their radiuses R from the rotation axes (4C) up to the end portions of the step portions (4B) are set in advance.

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Patent Citations (5)

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    JP-H07174201-AJuly 11, 1995Nissan Motor Co Ltd, 日産自動車株式会社摩擦車式無段変速機
    JP-H07229546-AAugust 29, 1995Nippon Seiko Kk, 日本精工株式会社トロイダル型無段変速機
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    JP-H10169742-AJune 26, 1998Nissan Motor Co Ltd, 日産自動車株式会社トロイダル型無段変速機
    US-5951435-ASeptember 14, 1999Nsk Ltd.Trunnion arrangement for a toroidal type continuously variable transmission

NO-Patent Citations (4)

    Title
    PATENT ABSTRACTS OF JAPAN vol. 1995, no. 10 30 November 1995 (1995-11-30)
    PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11 26 December 1995 (1995-12-26)
    PATENT ABSTRACTS OF JAPAN vol. 1996, no. 06 28 June 1996 (1996-06-28)
    PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30)

Cited By (0)

    Publication numberPublication dateAssigneeTitle