Screwed assembly

Patent metadata

Field	Value
Publication number	US-9670946-B2
Application number	US-201514734550-A
Country	US
Kind code	B2
Filing date	Jun 9, 2015
Priority date	Dec 10, 2012
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A screwed assembly consists of at least one pre-punched, upper and an unpunched, lower component, an intermediate layer arranged in between, and a plurality of self-drilling fastening screws which are introduced via a pre-punch hole in the upper component and screwed to the unpunched component with the interposition of the intermediate layer. In order to effectively prevent in a simple manner any still uncured intermediate layer material from flowing out of the upper component surface when the fastening screws are screwed in, the pre-punches in the upper component are designed as blind holes which are closed by a thin-walled web.

First claim

What is claimed is:

1. A screwed assembly, comprising:
a pre-punched upper component, the pre-punched upper component including pre-punches in the form of blind holes;
an unpunched lower component;
an intermediate layer arranged between the upper component and the lower component; and
multiple self-tapping fastening screws,
wherein
each of the blind hole pre-punches formed in the upper component are closed by a web spaced away from a side of the upper component that faces the lower component when the upper and lower components are adjacent in a pre-assembled state, and
the assembled state is a state resulting from insertion of the multiple self-tapping fastening screws into respective ones of the pre-punches of the upper component and into the intermediate layer and the unpunched lower component while the intermediate layer is in an uncured state.

2. The screwed assembly according to claim 1 , wherein the web closing each blind hole is a thin-walled web relative to a thickness of the pre-punched component.

3. The screwed assembly according to claim 1 , wherein the pre-punched component is a cast aluminum part.

4. The screwed assembly according to claim 1 , wherein the intermediate layer is an adhesive layer connecting the upper and lower components in a corrosion-resistant and load-resistant manner.

5. The screwed assembly according to claim 1 , wherein the web is arranged at a location of the pre-punch inwardly with respect to outer surfaces of the pre-punched component.

6. The screwed assembly according to claim 1 , wherein the web is arranged at a location of the pre-punch near a surface of the component on the intermediate layer.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Duenisch Robert
• Koch Benjamin
• Wendland Norbert
• Hirsch Peter
• Gottmann Helmut
• Rapp Dieter
• Klawunn Thomas

Classifications

• F16B25/106

  by means of a self-piercing screw-point, i.e. without removing material · CPC title

• F16B11/006

  by gluing (gluing of plastics material B29C65/48) · CPC title

• F16B5/02 Primary

  by means of fastening members using screw-thread ({F16B5/0004 takes precedence}; construction of screw-threaded connections F16B25/00 - F16B39/00) · CPC title

• B62D27/065 Primary

  using screwthread (connection of crossbeam to A- pillars B62D25/147; mounting load bearing surfaces B62D21/09; securing mudguards B62D25/163; connections for synthetic parts B62D29/048) · CPC title

• F16B25/0021

  the material being metal, e.g. sheet-metal or aluminium (F16B25/0031 takes precedence) · CPC title