TH15679Y - Door frame structure with internal metal reinforcement for added strength. - Google Patents

Abstract

Page 1 of 1 page. Summary of the Invention. A door frame structure with an internal metal structure for reinforcement, which is characterized by the outer edges being made of C-shaped (C) (10) rails on the first and second opposite sides, and the third and fourth opposite sides, respectively, to form a rectangular door frame. One of the C-shaped (C) rails (10) has an open area (1 1) for installing several hollow metal boxes (12) so that several hollow metal boxes (12) are fitted into the C-shaped (C) rails (10) on the first and second opposite sides, and the third and fourth opposite sides, respectively, so that the area inside the C-shaped (C) rails (10) is free of gaps for reinforcing the rectangular door frame. Some of the hollow metal boxes (12) have a diameter smaller than the openings of the C-shaped (C) rails (10) to fit together.

Claims (1)

Revised 13/05/2019 Claims 1. The door frame structure has an internal metal structure for reinforcement, with a special feature that the outer edge of the frame is in the form of a C-shaped rail (C) (10) to form a rectangular door frame. The C-shaped rail (C) (10) has an open area (11) on one side for installing a hollow metal box (12) so that the hollow metal box (12) is assembled into the C-shaped rail (C) (10) so that there are no gaps in the area of the C-shaped rail (C) (10) for reinforcing the rectangular door frame. The hollow aluminum metal box (12) has a diameter smaller than the opening of the C-shaped rail (C) (10) to assemble them together. ---------- Page 1 of 1 page Claims 1. The door frame structure has an internal metal structure for reinforcement, with a special feature that the outer edge of the frame is in the form of a C-shaped rail (C) (10) on the first and second opposite sides, the third and fourth sides Opposite sides, in sequence, to form a rectangular door frame, the C-shaped track (C) (10) has an open area (1 1) on one side for installing several hollow metal boxes (12) so that several hollow metal boxes (12) are fitted into the first and second opposite sides of the C-shaped track (C) (10), the third and fourth opposite sides, in sequence, so that there are no gaps in the area of the C-shaped track (C) (10) for reinforcing the rectangular door frame. Several hollow aluminum metal boxes (12) have a diameter smaller than the openings of the C-shaped track (C) (10) to fit together.