| 摘要 |
<p>The invention relates to a rivet for joining of surface treated objects which is designed for decreasing the stress and damage that may occur on the surface treated frame during the riveting process. The rivet includes a substantially cylindrical shaft (1) and a head (2) having a larger diameter than the shaft, wherein the head comprises an upper limit surface (14) and a lower limit surface (3), where the transition from the upper limiting surface to the contact surface is situated within an area (15) where the head has its maximum radial extension and at the points (16) within this area which are closest to the shaft (1), where the lower limit surface includes an inner limit surface (4) extending substantially perpendicularly from the axis of symmetry of the shaft (7) and which is substantially symmetrical with respect to said axis of symmetry (7) and an outer partial surface (5) adjoining the inner partial surface (4) and there every inner point of the outer partial surface is situated at a greater distance, in the axial direction of the shaft, from the end of the shaft which faces away from the head, than every point on the inner partial surface.</p> |
