Handheld power tool having a reduction gear unit

US9109670B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Heiko Roehm · Stuttgart, DE
• Ralf Windsheimer · Stuttgart, DE

Key dates

• Filing date: Feb 1, 2012
• Grant date: Aug 18, 2015
• Expiry date: Mar 24, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D7/00
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a handheld power tool having a reduction gear unit, drivable by a motor, for driving a drive shaft, the reduction gear unit being situated in a gear housing and being shiftable via a gearshift at least between a first gear having a comparatively high torque and a second gear having a comparatively low torque, the reduction gear unit is assigned a mechanical overload protection device which is designed to limit the reduction gear unit during operation of the handheld power tool, if a torque, transferred from the drive shaft to the reduction gear unit, exceeds a machine-specific limiting value.