Linear motion device comprising projection-free return passage

US8282283B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

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

Key dates

• Filing date: Jan 28, 2010
• Grant date: Oct 9, 2012
• Expiry date: Jan 20, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2361/00
• 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, in which at least one, and preferably at least two, first rolling surface(s) which extend(s) in a longitudinal direction is/are provided on the first assembly, each first rolling surface being located opposite a second rolling surface provided on the second assembly, and in which a row of rolling elements is located between the first and second rolling surfaces, and in which the first assembly includes a single-pieced, first body and at least one return assembly, at least one return passage being provided in the first body, and furthermore in which at least one curved deflection passage is located entirely within the deflection assembly and connects the first rolling surface to the return passage in a manner such that the rolling elements may circulate endlessly, and in which at least one projection that engages in the return passage is provided on the deflection assembly. The projection is formed by a flexible tube that limits a flexible passage for the rolling elements, the flexible passage connecting the deflection passage to the return passage.