US 12,296,446 B2
Method for operating a hand-held power tool
Simon Erbele, Nufringen (DE); Wolfgang Herberger, Stuttgart (DE); and Tobias Herr, Stuttgart (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 18/256,615
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Nov. 25, 2021, PCT No. PCT/EP2021/082981
§ 371(c)(1), (2) Date Jun. 8, 2023,
PCT Pub. No. WO2022/128388, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 10 2020 215 988.2 (DE), filed on Dec. 16, 2020.
Prior Publication US 2024/0033884 A1, Feb. 1, 2024
Int. Cl. B25B 23/14 (2006.01); B25B 23/147 (2006.01)
CPC B25B 23/1475 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method for operating a hand-held power tool, the hand-held power tool having an electric motor, the method comprising:
carrying out a screw connection of a connecting device in a support;
providing at least one signal of an operating variable of the electric motor during the screw connection;
evaluating the at least one signal of the operating variable of the electric motor; and
deciding whether the screw connection has been properly carried out, the decision being at least partially based on the evaluation of the at least one signal of the operating variable of the electric motor,
wherein the evaluating of the at least one signal of the electric motor comprises:
providing at least one condition-typical model signal form, wherein the condition-typical model signal form is assignable to a work progress of the hand-held power tool;
comparing the signal of the operating variable to the condition-typical model signal form and ascertaining an agreement evaluation from the comparison; and
detecting the work progress at least partly using the ascertained agreement evaluation.