Patent ID: 8820193
Filing Date: 2014-09-02
Classification: B60K,F16H,Y10T

Abstract:
1. A driving force distribution device configured to set torque distribution between main and auxiliary driving wheels by splitting and outputting to the auxiliary driving wheel a part of torque to the main driving wheel, the driving force distribution device comprising: a first friction roller configured to rotate together with a rotating member constituting a torque-transmitting path to the main driving wheel; a second friction roller configured to rotate together with a rotating member constituting a torque-transmitting path to the auxiliary driving wheel; and an inter-roller radial press section configured to press the first and second friction rollers in radial directions of the first and second friction rollers into pressing contact with one another, to allow torque transmission between the first and second friction rollers, wherein the inter-roller radial press section is configured to set a radial pressing force between the first and second friction rollers such that, when a maximum torque is inputted to the driving force distribution device under a condition that torque distribution to the auxiliary driving wheel is maximized, the inter-roller radial press section limits torque input to the auxiliary driving wheel by allowing slippage between the first and second friction rollers.