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Rivets with reduced head diameter

A rivet and head technology, applied in the field of self-piercing rivets, can solve problems such as high manufacturing costs

Active Publication Date: 2022-04-29
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One way to solve this problem is to reduce the flush tolerance range, but tighter tolerances lead to higher manufacturing costs

Method used

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  • Rivets with reduced head diameter
  • Rivets with reduced head diameter
  • Rivets with reduced head diameter

Examples

Experimental program
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Embodiment Construction

[0052] The following description is merely exemplary in nature and is not intended to limit the invention, application or use. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0053] refer to Figure 3A, shows a rivet constructed in accordance with the teachings of the present invention and is indicated generally by reference numeral 20 . Rivet 20 includes a defined outer diameter H d The head 22 and the shaft portion 24 extending from the head 22, the shaft portion 24 defines the outer diameter S d . The outer diameter H of the head 22 d Less than or equal to the outer diameter S of the shaft portion 24 d . The outer diameter H of the head 22 of the rivet 20 d Smaller in order to reduce any gaps that may exist under or near the head 22 after installation as described in more detail below.

[0054] As further shown, the recess 30 extends into the shaft portion 24 of one form of t...

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PUM

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Abstract

An assembly such as a vehicle assembly is provided that includes an upper workpiece, a lower workpiece, and a rivet extending through the upper workpiece and into the lower workpiece. The rivet, which in one form may be a self-piercing rivet (SPR), includes a head and a shaft extending from the head. The diameter of the head (H d ) is less than or equal to the diameter of the shaft (S d ), and the interface between the head of the rivet and the upper workpiece is flush.

Description

technical field [0001] The present invention relates generally to fasteners and more particularly to self-piercing rivets (SPRs). Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] As the automotive industry continues to focus on lightweight vehicles to meet customer expectations for fuel economy and CAFE (company average fuel economy) requirements, interest in alternative materials including aluminum-intensive vehicle architectures has increased. In "body-in-white" construction (the stage where the structure has been joined together prior to coating / painting), joining methods have traditionally relied on resistance spot welding (eg in steel construction). In aluminum-intensive vehicles and other mixed-metal joining applications, self-piercing rivet (SPR) technology prevails. exist figure 1 The SPR technique is shown in , where a rivet is inserted i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B19/10
CPCF16B19/10F16B5/04F16B19/086F16B19/08
Inventor 大卫·约翰·科德韦尔阿曼达·凯·弗赖斯盖瑞·桑基·赫夫
Owner FORD GLOBAL TECH LLC