| 主权项 |
1. A blind rivet for joining by a rivet setting process a first workpiece including an accessible side and a second workpiece including a blind side, the blind rivet comprising:
a hollow rivet body made of plastic, the body including:
an elongated shank that defines an axial bore that extends coaxially to a longitudinal center axis of the blind rivet;a head extending radially from a first end of the shank for contact with the accessible side of the first workpiece; anda foot end located at a second end of the shank and passable through an opening formed through the first workpiece and second workpiece, and the blind rivet further comprising: a mandrel slidably located in the bore of the rivet body, the mandrel including:
a mandrel shank with a drawing end projecting out of the head of the rivet body;a mandrel head that stands in operative connection with the foot end of the rivet body in order to transmit a force to the rivet body during the rivet setting process, and: characterized in that the shank of the rivet body, between the head and the foot end, includes
a first region with a first wall thickness reduced as compared to a head section of the shank and the foot end;a second region, located within the first region, and with a second wall thickness reduced as compared to the first wall thickness of the first region; andthe bore of the rivet body further includes: a first conical bore section defining a first diameter that increases towards the foot end, and a second conical bore section opposed to the first conical bore section and defining a second diameter that decreases towards the foot end, and wherein the ends of the first conical bore section and second conical bore sections with greatest diameter a roach a transition point in the shank that is located axially between the second region and the foot end. |
