| 摘要 |
A driving force transmission apparatus includes: a front housing and an inner shaft coaxially with each other and rotatable relative to each other; a main clutch transmitting torque between the front housing and the inner shaft; and a cam mechanism having a main cam and a pilot cam and using the main cam to press the main clutch. Where a circumferential gap angle between each spline tooth of the front housing and a corresponding first protrusion of outer clutch plates is theta1, a circumferential gap angle between each spline tooth of the inner shaft and a corresponding protrusion of inner clutch plates is theta2 and a circumferential gap angle between each spline tooth of the inner shaft and a corresponding protrusion of the main cam is theta3, the inequality theta1+theta2-theta3>=1.0° is satisfied. |
