| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the generation of an unexpected quick brake and an unexpected posture change at the hand operation time by setting the maximum pressure of a brake liquid pressure supplied from a hand brake means to the pressurer smaller than the maximum pressure of the brake liquid pressure supplied from a foot brake means. SOLUTION: At the hand brake time, a hand brake switch 14 provided on a steering wheel 16 is pushed by a push-press force responding to a necessary brake force. When the higher brake force by the hand operation is wished to get, both two hand brake switches 14 are operated symulatneously. As the resultant of the push-press forces against two hand brake switches 14 becomes high, a target liquid pressure value becomes also high and the brake liquid pressure applied to a wheel cylinder WC becomes high. Though a big brake force is generated, as such posture that the steering wheel 19 are grasped by both hands is surely formed at the hand brake operation time, the posture is stabilized, even if a big brake force is generated.</p> |
