Multi-component injection-molded part with material-locking sealing

US8435618B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Guenter Krenz · Steinheim, DE
• Gerold Kohlberger · Märkisch Buchholz, DE
• Alexander Ziegler · Wülfrath, DE
• Bjoern Billep · Aalen, DE
• Wolf-Ingo Ratzel · Echterdingen, DE
• Bernd Beiermeister · Steinheim an der Murr, DE
• Zdenek Frcek · Město Albrechtice, CZ
• Vaclav Straus · Lovosice, CZ

Key dates

• Filing date: Nov 11, 2008
• Grant date: May 7, 2013
• Expiry date: Jun 29, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An injection-molded part according to the invention has at least one thermoplastic inlay part and one thermoplastic composite element injection-molded onto the inlay part. The at least one inlay part on its boundary face with the composite element has at least one raised feature for material-locking sealing between the inlay part and the composite element. The raised feature protrudes with a height H1 into the composite element and forms a narrowed cross section in the composite element having a height H2. The at least one raised feature, on its flux leading end, has a first chamfer, and the ratio of the height of the narrowed cross section to the height of the raised feature is in the range between 0.6 and 0.9.