US 11,986,929 B2
Handheld machine tool, in particular impact driver
Benjamin Straub, Kuchen (DE); and Alexander Lautenschläger, Esslingen (DE)
Assigned to Festool GmbH, Wendlingen (DE)
Appl. No. 17/262,120
Filed by Festool GmbH, Wendlingen (DE)
PCT Filed Jun. 12, 2019, PCT No. PCT/EP2019/065405
§ 371(c)(1), (2) Date Jan. 21, 2021,
PCT Pub. No. WO2020/020531, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 102018118196.5 (DE), filed on Jul. 27, 2018.
Prior Publication US 2021/0291329 A1, Sep. 23, 2021
Int. Cl. B25B 21/02 (2006.01)
CPC B25B 21/02 (2013.01) 29 Claims
OG exemplary drawing
 
1. A handheld machine tool, having a drive train for driving a tool receptacle, provided for receiving a tool about a rotation axis, wherein the drive train comprises a drive motor, an output shaft element, on which the tool receptacle is arranged, and a drive shaft, which is drivable by the drive motor, for driving the output shaft element, wherein the output shaft element is rotatably mounted by means of an output pivot bearing and the drive shaft is rotatably mounted by means of a drive pivot bearing about the rotation axis in respect of a machine housing, and wherein the output shaft element is rotatably mounted with respect to the drive shaft by means of a shaft bearing arrangement provided between the output shaft element and the drive shaft about the rotation axis and wherein the shaft bearing arrangement has at least two shaft bearings, which are arranged adjacent to each other in relation to the rotation axis and differ by at least one mechanical property, wherein the at least one mechanical property includes different bearing diameters of at least two of the shaft bearings, and
wherein the at least two shaft bearings of the shaft bearing arrangement are radial bearings.