Detachable magnet device

A device for detachable attachment to a ferromagnetic object or surface, the device comprising:

• a magnet that generates a magnetic field, the magnetic field producing a magnetic attraction force between the magnet and the ferromagnetic object, the magnet comprising a cup magnet or a channel magnet or a magnetic sheet having a plurality of island portions with interstitial portions of the magnetic sheet disposed about each island portion, each island portion having a north pole and a south pole, the north pole and the south pole of each island portion being positioned so that each island portion has a first magnetic polarity, and the interstitial portions of the magnetic sheet having a second magnetic polarity that is opposite the first magnetic polarity;
• a baseplate fixed to the magnet, the baseplate including a tab portion extending beyond a periphery of the magnet;
• an annular body defining an aperture, the annular body being disposed about the magnet such that the magnet is located inside the aperture, the annular body being rotatable about a rotational axis relative to the magnet, and the annular body including a camming rib that extends inwardly into the aperture;
• a core housing defining a pocket that receives the magnet, the pocket having a corresponding polygon shape, polygon shape of the magnet and the corresponding polygon shape of the pocket being dimensioned and configured so that relative rotation between the magnet and the core housing is precluded;
• a pivot portion of the baseplate engaging a corresponding portion of the core housing to form a hinge joint, the baseplate and the magnet selectively pivoting about a pivot axis of the hinge joint relative to the core housing, the pivot axis being orthogonal to the rotational axis;
• wherein the camming rib applies a camming force to the baseplate upon rotation of the annular body relative to the magnet, the camming force urging the magnet and the baseplate to pivot about the pivot axis.

A device for detachable attachment to a ferromagnetic surface, the device comprising:

• a core housing defining a pocket;
• a magnet disposed in the pocket defined by the core housing, the magnet comprising a cup magnet or a channel magnet or a magnetic sheet having a plurality of island portions with interstitial portions of the magnetic sheet disposed about each island portion, each island portion having a north pole and a south pole, the north pole and the south pole of each island portion being positioned so that each island portion has a first magnetic polarity, and the interstitial portions of the magnetic sheet having a second magnetic polarity that is opposite the first magnetic polarity;
• a baseplate fixed to the magnet, the baseplate including a tab portion extending beyond a periphery of the magnet, a pivot portion of the baseplate engaging a corresponding portion of the core housing to form a hinge joint, the baseplate and the magnet selectively pivoting about a pivot axis of the hinge joint relative to the core housing;
• an annular body disposed about the core housing, the annular body being rotatable about a rotational axis relative to the core housing, the annular body defining an aperture, and the annular body including a camming rib that extends inwardly into the aperture;
• wherein the camming rib applies a camming force to the tab portion of the baseplate upon rotation of the annular body relative to the core housing, the camming force urging the magnet and the baseplate to pivot about the pivot axis;
• and
• wherein the pivot axis is orthogonal to the rotational axis.