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    • 37. 发明专利
    • VEHICLE
    • JP2000142454A
    • 2000-05-23
    • JP32099798
    • 1998-11-11
    • TOYOTA MOTOR CORP
    • GOTO AKIOTOYAMA SHINJINAKANO TETSUOKURIYAMA SHOICHIWATAHASHI YASUHIKO
    • A63G25/00B62D7/14B62D9/00
    • PROBLEM TO BE SOLVED: To freely change the travel direction of a vehicle by rotating a ring- like driving wheel with its center axis as the rotational center, and steering a pair of free rollers in opposite phases to each other. SOLUTION: This vehicle is provided with a ring-like driving wheel 10 disposed to surround the peripheral lower end of the vehicle, and a pair of free rollers 21, 22. The driving wheel 10 is rotated in the direction of an arrow mark (x) with its center axis as the rotational center and grounded on the ground at a contact point. With the operation of an operating lever 43 serving as an operating means 30 and by a hydraulic cylinder 31, a rack 32 is moved in the direction of an arrow mark 32x and in the reverse direction to the direction of the arrow mark 32x, and a pair of free rollers 21, 22 are steered in opposite phases to each other so as to rotate the free roller 21 in the direction of an arrow mark 21x and to rotate the free roller 22 in the direction of an arrow mark 22x. The travel direction of the vehicle 1 can therefore be freely changed.