STEPLESS GEAR CHANGE MECHANISM

To press a pair of rollers to a conical drive wheel and a conical driven wheel by a simple constitution.SOLUTION: A stepless gear change mechanism comprises: a conical drive wheel 12 arranged at a drive shaft; a conical driven wheel 14 arranged at a driven shaft, and oppositely arranged while separating from the conical drive wheel 12 in a radial direction; a pair of rollers 26 sandwiched between the conical drive wheel 12 and the conical driven wheel 14; and a plate 16c for holding a pair of the rollers 26, and imparting a load to a direction in which the pair of rollers 26 approximate each other. It is unnecessary to install a hydraulic mechanism at the stepless gear change mechanism in order to press the pair of rollers 26 to the conical drive wheel 12 and the conical driven wheel 14. Therefore, the stepless gear change mechanism can press the pair of rollers 26 to the conical drive wheel 12 and the conical driven wheel 14 by a simple constitution.SELECTED DRAWING: Figure 4 【課題】簡易な構成で一対のローラを円錐駆動車および円錐従動車に押圧する。【解決手段】無段変速機構は、駆動軸に設けられた円錐駆動車１２と、従動軸に設けられ、円錐駆動車１２と径方向に離隔して対向配置される円錐従動車１４と、円錐駆動車１２と円錐従動車１４との間に挟持される一対のローラ２６と、一対のローラ２６を保持し、一対のローラ２６が互いに近接する方向に荷重を付加するプレート１６ｃと、を備える。無段変速機構は、一対のローラ２６を円錐駆動車１２および円錐従動車１４に押圧するために油圧機構を設ける必要がない。そのため、無段変速機構は、簡易な構成で一対のローラ２６を円錐駆動車１２および円錐従動車１４に押圧することができる。【選択図】図４