Screw securing device and method for securing the screw

The invention relates to a screw securing device and a method for securing the screw. The invention discloses a securing device (1) which includes a component (3) having at least one screw opening (4). The screw opening (4) has a first bore (5) and a second bore (6) in which the first bore (5) has a smaller bore diameter and a larger bore depth than the second bore (6). The securing device (1) also has an annular expansion element (7) that can be fitted into the second bore (6) and is designed to expand radially and to press its outer circumference against an inner circumference of the secondbore (6) when the screw (2) is introduced into an annular opening of the expansion element (7). 本发明涉及用于螺钉的固定装置和用于固定螺钉的方法，该固定装置包括具有至少一个螺钉开口(4)的构件(3)，其中，螺钉开口(4)具有第一孔(5)和第二孔(6)，其中，第一孔(5)具有比第二孔(6)更小的孔径和更大的孔深。根据本发明的固定装置的特征在于，固定装置(1)此外还包括呈环形的撑开体(7)，该撑开体能布置在第二孔(6)之内并且被构造成用于，在所述螺钉(2)被导入到撑开体(7)的环形开口(7')内时径向膨胀并以其外圆周(7")对着第二孔(6)的内圆周顶靠。