The present design is the students by the school to the classroom door on the dragon, by improving the locked structure and handle maintains the robustness and in particular, in the case of a locked structure, but not to the location of the hanging loop to touch a student's hand easily to impossible for hanging loop Tally due to erratic behavior and frequent hand and to prevent easy breakage.; In the present design is fixed to the normal of the hinged door main body 50, the handle 10 includes a fixing bolt 12 passing through the door main body 50 having a handle 10 and locked structure 20 an outer fixing members 11 (11 ') welded to each other corresponds the the "I" type handle (10a), (10b), configured and locked structure 20 is installed, but the upper part of the door main body 50, which intermeshing 'I' shaped hanging loop (20a) is a structure composed of (20b). Thus, the subject innovation is by fixing bolts can be maintained a long period of time the robustness of by a door fixing the handle on the inside and outside side integrally addition, and satisfies serves as a locked-up by that of the 'U-shaped hanging loop elimination is not possible on the upper door body At the same time, by installation where the students out of the reach can be prevented from being damaged due to the erratic behavior of the students.
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