| 摘要 |
PROBLEM TO BE SOLVED: To provide a planetary roller type transmission suitable for an electric automobile having low level of vibration and noise, and capable of obtaining appropriate normal force of a contact part in a wide range from low load torque to high load torque. SOLUTION: An outer ring 41 and sun rollers A (43A), B (43B) are provided on a sun shaft 42, and a plurality of planetary rollers 44 are rotatably and revolvably mounted by a carrier 47 in the peripheral direction at equal intervals in between the outer ring 41 and the sun roller A (43A), B (43B). The sun rollers A (43A), B (43B) and the planetary rollers 44 are pressure welded by contact corners, a plate spring 58 is provided in between the sun roller B (43B) and a spacer B (57), a movement regulating means for movement of the sun roller B (57) in the axial direction, and axial pressurizing force of the plate spring 58 is added to axial pressurizing force of a torque cam 52. COPYRIGHT: (C)2004,JPO
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