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    • 3. 发明公开
    • THREE-DIMENSIONAL FOLDING FRAME, ELECTRIC VEHICLE, BICYCLE, AND MOTORCYCLE
    • EP3950478A1
    • 2022-02-09
    • EP19953137.7
    • 2019-11-29
    • Lin, Feng
    • LIN, ZijieLU, FanLIN, Feng
    • B62K15/00
    • A three-dimensional folding frame includes a first pivot portion (2) for providing a front folding wheel frame (1) with movable folding; a second pivot portion (4) for providing a rear folding wheel frame (3) with movable folding; a third pivot portion (6) for providing a handlebar vertical rod (5) with rotatable folding; and a fourth pivot portion (8) for providing a crossbar (7) with rotatable folding. The crossbar (7) includes a first folding arm (71) and a second folding arm (72); the first folding arm (71) is movably connected to the front folding wheel frame (1) by means of the first pivot portion (2); the front folding wheel frame (1) rotates about the first pivot portion (2) and can move relative to the first folding arm (71) to form a three-dimensional movement freely folded state; the second folding arm (72) is movably connected to the rear folding wheel frame (3) by means of the second pivot portion (4); the rear folding wheel frame (3) rotates about the second pivot portion (4) and can move relative to the second folding arm (72) to form a three-dimensional movement freely folded state; and the first folding arm (71) and the second folding arm (72) switch between a folded state and an unfolded state by means of the rotation of the fourth pivot portion (8).