| 摘要 |
A peel type blind rivet (30) for securement in an aperture (9) of one or more workpieces (5,7), the rivet having a tubular shell (4) a flange (6) abutting one side of the workpieces, together with a mandrel (10) with a stem (8) extending through the shell and forming an enlarged head (32) adjacent to the tail end face (20) of the shell, whereby the head (32) has a plurality of axially extending cutting edges (36) for engaging with the body shell (4) the setting process of the rivet whereby when the stem (8) is subjected to a tensile load these edges (36) serve to split the shell into a plurality of segments to engage with a remote side (5) of the workpieces. The head (32) further comprises a deforming means (56) disposed radially between the stem (8) and the cutting edges (36), which deforming means (56) having at least a part thereof disposed radially outwards of the stem (8) so as to engage and deform the shell (4) so as to displace at least part of the shell material into a recess (44) of the stem formed adjacent to the mandrel head (32) when the rivet (30) is set. <IMAGE>
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