| 摘要 |
A first attachment structure of a first attachment element includes apertures and first attachment structure magnetic elements. A second magnetic structure of a second attachable element includes inner and outer magnetic elements. The second attachment structure is moveable between a first and a second position. Movement between the positions may rotate the inner and outer magnetic elements. In the first position, the first attachment structure magnetic element may not attract the outer magnetic element and magnetic force from the inner magnetic element may pull the outer magnetic element toward the inner magnetic element and out of the aperture. In the second position, the first magnetic structure magnetic element may exert magnetic force on the outer magnetic element to overcome the magnetic bond between the inner magnetic element and the outer magnetic element and pull the outer magnetic element toward the first magnetic structure magnetic element and into the aperture. |
