US Patent 11980311 Detachable supporting device

A detachable supporting device includes a base and a magnetic force providing module. The base has a body portion and a stretching portion. The magnetic force providing module has a first magnetic component, a first magnetic assembly and a second magnetic assembly. The first magnetic component is disposed on the stretching portion. The first magnetic assembly includes a second magnetic component and a third magnetic component. Two poles of the second magnetic component respectively face an upper surface and a lower surface of the body portion. A pole of the third magnetic component faces the second magnetic component. The second magnetic assembly includes a fourth magnetic component and a fifth magnetic component. Two poles of the fourth magnetic component respectively face the upper surface and the lower surface. A pole of the fifth magnetic component faces the fourth magnetic component.