| 摘要 |
A door including a door frame unit, a door leaf, a door closer system and hinges is provided. A sliding groove is opening formed on a top surface or a bottom surface of the door leaf. The door closer system is assembled to the door leaf and the door beam of the door frame (or embedded in the ground). The door closer has a sliding arm, and the sliding arm has a front end pivoted to the sliding groove of the door leaf, and a rear end connected to the door closer. Through the combination of the door closer with the door frame and the door leaf, the door leaf may rotate outward completely or inward with respect to the door columns. Therefore, the elastic stroke and oil pressure efficacy of the door closer is effectively used, to ensure that the door leaf to return to the close state. |
