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Self-punching fastening element

A technology for fastening components and workpieces, which is applied in the field of sheet metal parts, and can solve problems such as structural damage to workpieces, reduced tool life, and difficulties in manufacturing fastening components

Pending Publication Date: 2022-04-12
PROFIL VERBINDUNGSTECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result can be reduced tool life and structural damage to the workpiece
Additionally, it may be necessary to use fastening elements with special properties; for example, it may be necessary to use high-strength materials for the fastening elements, making their manufacture more difficult and more expensive

Method used

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  • Self-punching fastening element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] Figure 1A A self-punching fastening element 10 composed of metal is shown for joining a first workpiece 12 (see figure 2 ) and the second workpiece 14 (see Figure 5 ). The fastening element comprises an annular segment 16 and a shaft segment 18 arranged coaxially along the longitudinal axis L of the fastening element 10 .

[0063] The ring segment 16 has a circular outer contour in the form of a ring and surrounds a circular axial opening 20 in the circumferential direction (see Figure 1B ). On its side facing the shaft section 18, the ring section 16 has a first mounting device 44 (see figure 2 ) The radially extending annular joint surface 22 ( Figure 1A ). The annular workpiece contact surface 24 is arranged on the side of the ring segment 16 facing away from the shaft segment 18 and the joint face 22 and is at least partially aligned parallel to the joint face 22 .

[0064] The workpiece contact surface 24 is delimited on the radially outer side by a punc...

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Abstract

The invention relates to a self-punching fastening element for connecting a first workpiece to a second workpiece, in particular wherein the workpiece is a sheet metal part. The fastening element comprises: an annular section circumferentially surrounding an opening of the fastening element and having a workpiece contact surface delimited at a radially outer side by a stamped edge; and a shaft section connected to the annular section by means of a coupling section, arranged coaxially with the opening, extending from a side of the annular section remote from the workpiece contact surface, and having an outer contour designed to be complementary to an inner contour of the opening, such that the shaft section can be at least partially guided through the opening after the connection to the annular section is separated. Furthermore, the invention relates to a component assembly comprising a self-stamping fastening element and a first workpiece and possibly a second workpiece, and to a method for producing a component assembly.

Description

technical field [0001] The invention relates to a self-piercing fastening element for connecting a first workpiece to a second workpiece, in particular wherein the workpieces are sheet metal parts. However, the first material and / or the second material can generally also be a plastic part. Background technique [0002] Such fastening elements are generally known and are widely used, for example, in automotive engineering. However, the technical effort is high, especially in the connection of high-strength sheet metal parts to each other or to the connection of high-strength sheet metal parts to lower-strength sheet metal parts. In particular, high machining forces must be applied to produce such connections, which leads to high loads on the tools used and on the workpieces to be connected. The result can be reduced tool life and structural damage to the workpiece. In addition, it may be necessary to use fastening elements with special properties; for example, it may be ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/14B21D37/10B21D43/00
CPCF16B5/04F16B19/06F16B19/1027B21J15/025F16B31/00B21K25/00F16B19/086F16B19/10
Inventor 托比亚斯·耶内阿默·马尔梅
Owner PROFIL VERBINDUNGSTECHN