A entrance door for preventing unlawful trespass

摘要

The present invention relates to a security front door, the open end of the door is formed in a waveform along the up and down direction, the door frame to which the door is coupled is also formed in a waveform along the up and down direction, the top and bottom inside the open end of the door While the concave coupling groove is formed, the inner surface of the door frame that meets the front end of the door has a structure in which a protrusion is inserted into the coupling groove in the vertical longitudinal direction. In addition, the soundproof plate may be attached to the coupling groove of the door and the protrusion of the door frame, respectively. Since the security front door of the present invention having such a structure is formed in a wave form along the up and down direction of the door and the door frame, the gap between the door and the door frame is formed so that the intrusion tool is formed through the gap. Cannot be inserted.