| 摘要 |
PURPOSE: A door stopper is provided to prevent a safety accident by fixing or releasing a door in a stop position and to improve generality because the stopper can be used for all kinds of doors. CONSTITUTION: A door stopper comprises a gentle slope part(1), a steel slope part(2), and a longitudinal part(3). The gentle slope part has a gentle ascent slope. The steep slope part is connected to the gentle slope part and has a steel descent slope. The longitudinal part is connected to the steep slope part and has an opposite slope with the steep slope part. |
