| 摘要 |
PROBLEM TO BE SOLVED: To provide a steering device capable of setting the turning center for the two-wheel steering and for four-wheel steering and of achieving smooth running irrespective of the steering mode. SOLUTION: The symbolsα,β, L, W represent the inner wheel turning angle, the outer wheel turning angle, the inter-axle distance of the front and rear wheels, and the distance between a left and a right king pin, respectively, and the outer wheel driving side pitch curve of wheel steering gears (7fR, 7fL) and (7rR, 7rL) is made a circular arc having a constant ratio while the inner wheel driving side pitch curve of the wheel steering gears (7fR, 7fL) and (7rR, 7rL) is set to meet the Ackermann Jeantaud formula W/L=cotβ-cotαwhen the inner wheel turning angleαis below the prescribed turning angleα<SB>0</SB>for the outer wheel turning angleβdecided by the outer wheel driving side pitch curve, and whenαis equal to or more thanα<SB>0</SB>, meet the formula 2W/L=cotβ-cotα. COPYRIGHT: (C)2007,JPO&INPIT |
