| 主权项 |
1. A blind rivet adapted to be connected to, and for fastening together, a plurality of members to be fastened having fastening holes by using a rivet-setting tool, comprising:
a rivet body having a hollow sleeve and a sleeve-side end, a rivet head integrally formed on one end of the sleeve and being squeezable by the rivet-setting tool, and a through-hole formed so as to pass through the rivet body from the sleeve-side end to the rivet head-side end, the hollow sleeve having an axial length, a mandrel having an elongated stem whose outer diameter is smaller than the inner diameter of the sleeve and whose length is greater than the rivet body, and a head whose outer diameter is greater than the inner diameter of the sleeve, the mandrel stem defining a gripping portion adapted to be gripped by the rivet-setting tool, a non-plastically deformable washer whose inner diameter is smaller than the outer diameter of the rivet head and greater than the outer diameter of the sleeve in the rivet body, and whose outer diameter is greater than the outer diameter of the rivet head, wherein the head of the mandrel is arranged adjacent to the sleeve-side end of the rivet body, the stem of the mandrel being disposed through the through-hole in the rivet body and extends from the rivet head-side end, and the washer is arranged around the outer circumferential surface of the sleeve in the rivet body and adjacent to the rivet head, and wherein the blind rivet is inserted into the fastening holes in the members to be fastened from the head of the mandrel, and a surface of the washer engages a portion of the member to be fastened nearest the rivet head such that the washer surrounds the fastening holes such that the washer prevents the rivet head and the washer itself from entering the fastening hole of the member to be fastened nearest the rivet head, wherein the axial length of the rivet body hollow sleeve being long enough to axially extend from the rivet head through the washer, through both members to be fastened, and to extend sufficiently axially outwardly of the members to be fastened as to allow a portion of the extended sleeve to be deformed between the mandrel head and the members to be fastened, while permitting the rivet head to be squeezed onto the gripping portion of the mandrel stem, when the rivet-setting tool pulls the mandrel stem and engages the rivet head, so that the rivet can be fastened to the members to be fastened, such that the rivet is not removable from the members to be fastened except by destroying the rivet. |
