| 摘要 |
<p>An iron rolling door including a rolling door board structure (1) and guide rails (2). The rolling door board structure (1) is composed of multiple support rods (11), metal plates (12), connecting plates (13) and stopper plates (15). Two ends of each metal plate (12) are wound to define two circular holes (121) through which the support rods (11) extend. Each two adjacent metal plates (12) are pivotally connected by the connecting plate (13), whereby the metal plates (12) are able to rotate through a certain angle into an opened or closed state. The stopper plates are fitted with the support rods for preventing the metal plates (12) from slipping away from the support rods (11). Each guide rail (2) has a guiding wall (211) defining a guiding groove (21) for receiving a slide plate (22). Two link members (23) are disposed between the slide plate (22) and the guiding wall (21) and an extension spring (25) is disposed between the link member (23) and guiding wall (211). The slide plate (22), link member (23) and guiding wall (211) together form a four-link structure, whereby the rolling door board structure (1) is slidably disposed in the guiding grooves (21) of the guide rails (2) to be restricted by the slide plates (22), and the rolling door board structure (1) is able to rotate through a certain angle into an opened or closed state. <IMAGE></p> |
