| 摘要 |
A folding chassis (1) for push-chairs, baby carriages and the like, comprising - a lower frame (2), which has at least one front post (2a) and at least one rear post (2b), which are connected in a lower region to respective wheel assemblies (3a, 3b); - at least one upper post (4), which supports grip means (4a) and can move with a combined rotary and translational motion with respect to the lower frame (2) during the transition of the chassis (1) from an extended open condition to a collapsed closed condition; - at least one interconnection linkage (5), which is articulated rotatably to the upper post (4) and to the rear post (2b) about a first articulation axis (101) and a second articulation axis (102); - means (7) for kinematic interconnection between the upper post (4) and the lower frame (2); - the interconnection linkage (5) and the kinematic interconnection means (7) being adapted to determine the relative motion between the front post or posts, the rear post or posts and the upper post or posts (4) during the transition of the chassis (1) from the extended open condition to the collapsed closed condition and vice versa, - locking means (10) which can be activated, as a consequence of the transition of the chassis (1) from the collapsed closed condition to the extended open condition, and are adapted to keep the chassis (1) in the extended open condition, - a deactivation device (20), which is adapted to deactivate on command the locking means (10) in order to allow the transition of the chassis (1) from the extended open condition to the collapsed closed condition, at least one grip device (30) and at least one actuation device (31) being associated with the lower frame (2), said actuation device (31) being able to be actuated, with the locking means (10) deactivated and the grip device (30) gripped by the user, so as to move, by means of a movement of a linkage (5) and/or of an upper post (4), the first articulation axis (101) away from the rear post or posts (2b), so as to move beyond a position of equilibrium of the chassis (1) beyond which the chassis (1) tends to move towards the collapsed closed condition due to its own weight. |
