本发明提供了一种内自锁铆钉、铆钉复合连接装置以及连接方法，其中铆钉包括铆钉体(103)、内自锁凸台(104)、钉体端部(105)以及钉体头部组件；所述铆钉体(103)内部设置有铆钉腔体；所述铆钉腔体一端与钉体头部组件相连接，另一端与钉体端部(105)相连接；所述内自锁凸台(104)设置在铆钉腔体临近钉体端部(105)一侧；所述钉体端部(105)包括配合内自锁凸台(104)的楔形结构；所述铆钉体(103)内壁和/或外壁设置有表面结构，所述表面结构包括光滑结构、螺纹结构以及凹槽结构中的任一种或任多种组合。

The invention provides an inner self-locking rivet, a rivet composite connecting device and a connecting method, wherein the rivet comprises a rivet body (103), an inner self-locking boss (104), a nail body end (105) and a nail body head assembly; A rivet cavity is arranged inside the rivet body (103); One end of the rivet cavity is connected with the nail body head assembly, and the other end is connected with the nail body end (105); The inner self-locking boss (104) is arranged on one side of the rivet cavity adjacent to the end (105) of the rivet body; The nail body end (105) comprises a wedge-shaped structure matched with an inner self-locking boss (104); The inner and / or outer walls of the rivet body (103) are provided with a surface structure, which includes any one or any combination of smooth structure, thread structure and groove structure.