Braced frame of burglary -resisting window

The utility model relates to a braced frame of burglary -resisting window, including support bar, strut angle and special screw, the quantity of support bar is 4, and end to end's welding becomes the frame construction of a rectangle, strut angle of each welded fastening of the both ends of every support bar, and special screw fixes on the strut angle, special screw includes screw body, countersunk head and connecting plate, the top at screw body is fixed to the countersunk head, the countersunk head is the cylinder structure, is equipped with round the ring structure's fastening groove and round the ring structure's joint groove on the outer wall of countersunk head, fastening trench in the top in joint groove, the fastening groove sets up for the slope, design benefit, and the practicality is strong, can the wide application, must coordinate the special fastener use just can open, have good theftproof performance, with the theftproof performance that improve the burglary -resisting window greatly.