The invention relates to a bracket structure used for a self-locking orthotic device, which comprises a locking piece, a bracket body and a two lock core tube.The lock recess is provided with an adjustment groove, and the bracket body includes an accommodation groove which can accommodate a straightening main line, a sliding groove which can accommodate the sliding of the lock and a groove which can mount a hook. The bracket body is further dug with two holes, and respectively is provided with a lock core tube.The adjusting groove includes a clamping part and an internal shrinking part. According to the different sliding position of the lock piece, the two lock core tubes can selectively clamp on the clamping part or extrude to the internal shrinking part, so as to keep the lock piece and the bracket body firm, tightly clamping and not easy to loosen, and the two lock core tubes are selected to use the hollow lock core tubes which can enhance the elasticity to extend the service life of the bracket structure.本創作係有關於一種用於自鎖式矯正器之托槽結構，包括有一鎖片、一托槽體以及二鎖心管。鎖片凹設有一調整凹槽，托槽體包括一可容置一矯正線之容置槽、一可供鎖片滑移之滑槽以及一可掛載一掛鈎之溝槽，托槽體更挖設有二開孔，分別對應穿設有一鎖心管。其中，調整凹槽包括一卡合部及一內縮部，根據鎖片滑移位置的不同，二鎖心管可選擇式地卡合於卡合部或擠壓至內縮部，使鎖片與托槽體保持其牢固性，緊密卡合而不易鬆動，且二鎖心管係選用可增強彈性之空心鎖心管，用以延長托槽結構之使用年限。
