| 摘要 |
<p>A structure for safely and automatically folding and unfolding an umbrella comprises an umbrella rib (90), a middle rod (50), an upper nest (80), a lower nest (70), an umbrella handle (10), and a button (11). The button (11) is disposed on the surface of the umbrella handle (10). A large pulley (20) is arranged in the umbrella handle (10), and is connected with a torque spring (25) or an elastic sheet. One end of a pull wire is wound around the large pulley (20), and the other end passes through the middle rod (50) and is fixed to the upper nest (80) or the lower nest (70). A clamping component (30) is also disposed in the umbrella handle (10). One end of the clamping component (30) corresponding to the button (11) can be pushed by the button (11), and the other end is clamped by the large pulley (20), thereby controlling the large pulley (20) to release or collect the wire.</p> |
