CONTINUOUSLY VARIABLE TRANSMISSION

• Main Authors: NINOMIYA HIROSUKE, INASE YU
• Format: Patent
• Language: English; Japanese
• Published: 02.08.2021
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a continuously variable transmission which allows for reduction of a transmission loss of power at a minimum transmission gear ratio.SOLUTION: A continuously variable transmission is provided, comprising; a first pulley having a first fixed sheave fixed to a first rotating shaft, and a first movable sheave integrally rotating with the first rotating shaft, and movable along the first rotating shaft; a second pulley having a second fixed sheave fixed to a second rotating shaft, and a second movable sheave integrally rotating with the second rotating shaft, and movable along the second rotating shaft; and a transmission belt wound around a belt-winding groove which is formed of opposing tapered surfaces of the first fixed sheave and the first movable sheave of the first pulley, and a belt-winding groove which is formed of opposing tapered surfaces of the second fixed sheave and the second movable sheave of the second pulley. A friction coefficient with respect to the transmission belt of the first pulley at a contact surface contacting with the transmission belt in a belt track at a minimum transmission gear ratio is smaller than a friction coefficient with respect to the transmission belt at a contact surface contacting with the transmission belt of the second pulley at the minimum transmission gear ratio.SELECTED DRAWING: Figure 1 【課題】最小変速比のときに、動力の伝達損失を低減することができる無段変速機を提供すること。【解決手段】第１回転軸に固定された第１固定シーブ、及び、第１回転軸と一体回転するとともに第１回転軸に沿って移動可能な第１可動シーブ、を有する第１プーリと、第２回転軸に固定された第２固定シーブ、及び、第２回転軸と一体回転するとともに第２回転軸に沿って移動可能な第２可動シーブ、を有する第２プーリと、第１プーリの互いに対向するテーパ面によって形成されたベルト巻き掛け溝、及び、第２プーリの互いに対向するテーパ面によって形成されたベルト巻き掛け溝、に巻き掛けられた伝動ベルトと、を備えた無段変速機であって、最小変速比でのベルト軌道における、第１プーリの伝動ベルトとの接触面での伝動ベルトに対する摩擦係数が、第２プーリの伝動ベルトとの接触面での伝動ベルトに対する摩擦係数よりも小さい。【選択図】図１