| 摘要 |
A collapsible baby buggy includes, as principal elements, front legs (2) rear legs (3) arm rest members (4), push bars (5) and side bars (6) which are symmetrical in relation to the longitudinal direction of the baby buggy. These side members (6) are folded up longitudinally without a change in their width. A tension spring (12) and a compression spring (13) are arranged in series in the longitudinal direction of a rear leg (3). A slider (7) is hinged to the side bars (6) and is movable up and down in the longitudinal direction of the rear leg (3). A pedal frame (9) is movable up and down in the longitudinal direction of the rear leg. The tension spring (12) is fixed between the slider and the pedal frame, whereas the compression spring (13) is sandwiched between the pedal frame and a bottom member of the rear leg. The slider and the pedal frame are releasable locked at both upper and lower stop positions. The slider is moved up and down by virtue of the restoring forces stored in the tension spring and the compression spring. As a result, the side members are folded up and unfolded. |
