Magnetic base

A magnetic base for an electric machine tool, the magnetic base comprising:

• a body in which is accommodated at least one first permanent magnet, a magnetic force of which combines with a magnetic force of at least one second permanent magnet to form a resultant holding force, wherein the at least one second permanent magnet is supported in the body such that the at least one second permanent magnet rotates about a rotation axis through an angle of rotation between a first position in which the resultant holding force of the magnetic base is maximized and a second position in which the resultant holding force of the magnetic base is minimized;
• a controller for rotating the at least one second permanent magnet between the first position and the second position, the controller being supported so as to pivot about a pivot axis through a pivot angle between a first end position in which the at least one second permanent magnet is located in the first position and a second end position in which the at least one second permanent magnet is located in the second position;
• and
• a transmission configured such that a ratio between the pivot angle of the controller and the angle of rotation of the at least one second permanent magnet is between 1:3.6 and 1:1.5, the transmission being arranged between the controller and the at least one second permanent magnet,
• wherein a switching element for switching a switch that is connected to the magnetic base is associated with the at least one second permanent magnet.

A magnetic base for an electric machine tool, the magnetic base comprising:

• a body in which is accommodated at least one first permanent magnet, a magnetic force of which combines with a magnetic force of at least one second permanent magnet to form a resultant holding force, wherein the at least one second permanent magnet is supported in the body such that the at least one second permanent magnet rotates about a rotation axis through an angle of rotation between a first position in which the resultant holding force of the magnetic base is maximized and a second position in which the resultant holding force of the magnetic base is minimized;
• a controller for rotating the at least one second permanent magnet between the first position and the second position, the controller being supported so as to pivot about a pivot axis through a pivot angle between a first end position in which the at least one second permanent magnet is located in the first position and a second end position in which the at least one second permanent magnet is located in the second position;
• and
• a transmission configured such that a ratio between the pivot angle of the controller and the angle of rotation of the at least one second permanent magnet is between 1:3.6 and 1:1.5, the transmission being arranged between the controller and the at least one second permanent magnet,
• wherein an elastic pressure element, which engages in an opening provided on the transmission in the first end position and/or in the second end position of the controller, is accommodated in the body.