Search International and National Patent Collections

1. (WO2018036920) QUICK TENSIONING DEVICE FOR A PORTABLE MACHINE TOOL, IN PARTICULAR FOR AN ANGLE GRINDING MACHINE

Pub. No.:    WO/2018/036920    International Application No.:    PCT/EP2017/070920
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Sat Aug 19 01:59:59 CEST 2017
IPC: B24B 45/00
B27B 5/32
B24B 23/02
Applicants: ROBERT BOSCH GMBH
Inventors: LUESCHER, Bruno
ZURBRUEGG, Andreas
SINZIG, Bruno
SCHULLER, Marcus
Title: QUICK TENSIONING DEVICE FOR A PORTABLE MACHINE TOOL, IN PARTICULAR FOR AN ANGLE GRINDING MACHINE
Abstract:
The invention relates to a quick tensioning device for a portable machine tool, in particular for an angle grinding machine, comprising at least one output shaft (14) which can be rotated in particular, comprising at least one clamping unit (16) that is at least partly arranged in the output shaft (14) and has at least one clamping element (24, 26), which is movably mounted at least about and/or along a movement axis (20, 22) of the clamping unit (16), for fixing an insert tool unit (18) to the output shaft (14) without tools, and comprising at least one torque transmission unit (28) for transmitting a torque to the insert tool unit (18) when the insert tool unit (18) is arranged on the output shaft (14), said torque transmission unit having at least one torque transmission element (30, 32) which is formed separately from the output shaft (14) in particular. The quick tensioning device comprises at least one securing unit (34) at least for securing the torque transmission element (30, 32) to the output shaft (14) in a rotationally fixed manner in particular.