发明名称 |
Verfahren zum Anbringen eines Verbindungselementes auf eine Platte und Kombination einer Platte und wenigstens eines Verbindungselementes |
摘要 |
A method of permanently attaching a fastening element (150), such as a nut or bolt to panels (30) having a range of panel thicknesses, such as the metal panels used by the automotive and appliance industries. The fastening element (150) includes a tubular barrel portion (154) and preferably an annular bearing face (158) surrounding the barrel portion. The method includes punching a hole (42) in the panel, then plastically deforming and drawing the panel surrounding the hole into a dome or frusto-conically shaped portion (40). The panel hole is thus enlarged to receive the fastener element barrel portion (154) from adjacent the apex of the frusto-conically shaped panel portion (40) and the bearing face (158) is then driven against the panel, deforming the panel (30) to a generally planar shape. The panel surrounding the hole is thereby driven against the tubular barrel portion (154) which, in the preferred embodiment, includes radially projecting ribs (84), forming secure anti-rotation means even in very thin panels. Finally, the free end of the barrel portion is deformed radially outwardly and preferably squeezed to form a secure interlock between the fastening element and the panel. <IMAGE> |
申请公布号 |
DE69216206(T2) |
申请公布日期 |
1997.04.17 |
申请号 |
DE1992616206 |
申请日期 |
1992.10.13 |
申请人 |
PROFIL-VERBINDUNGSTECHNIK GMBH & CO KG, 61381 FRIEDRICHSDORF, DE |
发明人 |
MUELLER, RUDOLF R.M., W-6000 FRANKFURT, DE;BABEJ, JIRI, W-6302 LICH 6, DE |
分类号 |
F16B37/04;B23P19/06;F16B37/06;(IPC1-7):B23P19/06;B21J15/02 |
主分类号 |
F16B37/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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