US 11,865,692 B2
Magnetic base
Sergej Denzel, Schwaebisch Gmuend (DE); and Stefan Scherrenbacher, Waldstetten (DE)
Assigned to C. & E. Fein GmbH, Schwaebisch Gmuend-Bargau (DE)
Filed by C. & E. Fein GmbH, Schwaebisch Gmuend-Bargau (DE)
Filed on Apr. 1, 2021, as Appl. No. 17/220,583.
Claims priority of application No. 20 2020 101 776.4 (DE), filed on Apr. 1, 2020.
Prior Publication US 2021/0308858 A1, Oct. 7, 2021
Int. Cl. B23B 45/14 (2006.01); B25H 1/00 (2006.01); B28D 1/14 (2006.01); B23Q 3/15 (2006.01)
CPC B25H 1/0071 (2013.01) [B28D 1/146 (2013.01); B23B 2260/10 (2013.01); B23Q 3/15 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A magnetic base for an electric machine tool, the magnetic base comprising:
a body; and
at least one first magnet coil constituting an electromagnet that is accommodated in a receiving space of the body, a coil winding of the at least one first magnet coil being wound on a bobbin and a magnetic force of which is switchable between a maximum resultant holding force and a minimum resultant holding force,
wherein the coil winding of the at least one first magnet coil has two end sections that are each connected to a respective one of connecting cables that serve to make electrical contact between the at least one first magnet coil and the electric machine tool,
wherein the body has a first side adapted to be coupled to the electric machine tool and has an opposite second side adapted to be placed on a workpiece that is to be processed,
wherein the two end sections of the coil winding are each connected to the respective one of the connecting cables by a mechanical connection aid,
wherein the connecting cables and the two end sections of the coil winding have a common insertion direction in the mechanical connection aid, and
wherein the mechanical connection aid is disposed inside of the body.