US Patent 7950617 Support device and electronic device having the same

A support device includes a support-receiving member, a sliding block, a support, and an elastic sheet. The support-receiving member defines a groove with one end thereof blocked to form a stop end and the other opened to form an exit end. The sliding block and the support are slidably juxtaposed in the groove from the stop end to the exit end and rotatably coupled. The support includes a contact portion extending away from an end near the sliding block. The elastic sheet is fixed to the support-receiving member at the exit end and extends a free end away from the exit end. The free end maintains contact with the contact portion during rotation of the support and presses the contact portion to pivot the support to be stopped by the support-receiving member, stationing the support at that position.