The invention relates to an obstacle-crossing device for a motorized vehicle made up of a chassis (2), which is connected to three wheels (3a, 3b, 3c) on each lateral side of the chassis (2), and of motor means (5) designed to rotate the wheels (3a, 3b, 3c), and, on each lateral side of the chassis, there is a mechanism having two arms (7a, 7b) articulated in pairs about a common pivot axis (6), on which two arms (7a, 7b) are distributed the three wheels, respectively a front wheel (3a), an intermediate wheel (3b) and a rear wheel (3c), the mechanism allowing each wheel to pivot with respect to the axis of each adjacent wheel. The device is characterized in that the motor means (5) and the rear wheel (3c) are borne by an arm (10) articulated to the chassis (2) on a longitudinal member (14) via a pivot connection (13), the end (11) of the arm (10) that extends beyond the pivot connection (13) and on the opposite side to where the motor means (5) are secured cooperating with a slide (15) which is movable on the longitudinal member (14), the pivot connection (13) causing the front wheel (3a) to move between two end positions, namely a first position (20) in alignment with the other two wheels (3b, 3c) and a second position (21) which is lowered with respect to the alignment of the other two wheels (3b, 3c), the slide (15) having a wall (16) perpendicular to the sliding axis, whereas the longitudinal member (14) has a fixed wall (17) perpendicular to the sliding axis (22), at least one spring means (18) being interposed between the two walls (16, 17), whereas the arm (10) is dimensioned such that its free end (11) comes into contact with the wall (16) so as to push back the slide (15) while constraining the spring means (18) against the wall (16) when the front wheel (3a) is in its first position (20) aligned with the other two wheels (3b, 3c).
DISPOSITIF DE FRANCHISSEMENT AMELIORE POUR FAUTEUIL ROULANT ELECTRIQUE
IMPROVED OBSTACLE-CROSSING DEVICE FOR AN ELECTRIC WHEELCHAIR
VERBESSERTE HINDERNISQUERUNGSVORRICHTUNG FÜR EINEN ELEKTRISCHEN ROLLSTUHL
2024-11-06
Patent
Electronic Resource
French
DISPOSITIF DE FRANCHISSEMENT AMELIORE POUR FAUTEUIL ROULANT ELECTRIQUE
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