发明名称 |
Press fit fastener and method of producing it |
摘要 |
A press fit fastener (1) includes a shank (2), a head (3) and a press fit portion (4) being located at the shank (2). The head (3) is located at the first end of the shank (2). The press fit portion (4) includes a multiple helical profile (5). The helical profile (5) has a beginning portion (6) and an inclination portion (8). The outer diameter of the inclination portion (8) is designed to increase in a direction towards the head (3) to reach a maximum outer diameter. The maximum outer diameter of the inclination portion (8) is spaced apart from the head (3). The method of producing the press fit fastener (1) includes the steps of cold forming a press fit portion (4) at the shank (2) of the fastener (1) to produce a cylindrical helical profile (5) including a plurality of pitches, and calibrating the helical profile (5) without producing chips to produce an inclination portion (8) in which the outer diameter of the press fit portion (4) in a direction towards the head (3) increases to reach the maximum outer diameter. The maximum outer diameter of the inclination portion (8) being spaced apart from the head (3).
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申请公布号 |
US2004115026(A1) |
申请公布日期 |
2004.06.17 |
申请号 |
US20030730216 |
申请日期 |
2003.12.08 |
申请人 |
SOMMER WOLFGANG;WAGNER FRANK |
发明人 |
SOMMER WOLFGANG;WAGNER FRANK |
分类号 |
F16B4/00;F16B35/04;(IPC1-7):F16B37/04 |
主分类号 |
F16B4/00 |
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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