Linear motion device comprising projection-free return passage

US8403564B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Steffen Pfister · Langen, DE
• Bernhard Keller · Kaisten, DE

Key dates

• Filing date: Feb 11, 2010
• Grant date: Mar 26, 2013
• Expiry date: Feb 19, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2322/39
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A linear motion device has a first assembly and a second assembly which is linearly movable relative to the first assembly. A first rolling surface which extends in a longitudinal direction is provided on the first assembly and is situated opposite a second rolling surface provided on the second assembly. A row of rolling elements is located between the first and second rolling surfaces. The first assembly includes a single-pieced, first body and a return assembly and a return passage being provided in the first body A curved deflection passage is located entirely within the deflection assembly and connects the first rolling surface to the return passage such that the rolling elements circulate endlessly A projection that engages in the return passage is provided on the deflection assembly.