Patent ID: 8700107
Filing Date: 2014-04-15
Classification: H04M

Abstract:
1. A sound-amplifying case for a mobile device with a front face, a rear face, a top edge, a bottom edge, two side edges, and a speaker, the mobile device case comprising: a body for covering the rear face of the mobile device and comprising a plurality of fastening portions configured to fasten the mobile device, a plurality of utility holes for exposing portions of the mobile device, and a base groove; a sound guide groove provided under a portion of a body edge of the body and opened over the speaker of the mobile device for guiding sound from the speaker toward the pop-up plate; a sound guide hole provided through a portion of the base groove of the body exposing the speaker of the mobile device to the sound guide groove; a pop-up plate with a plate edge hinged to a portion of the body substantially along the body edge so as to cover the base groove of the body; a wedge-shape bellow sound amplifier with first and second foldable pan-shaped plates, each of which being installed between corresponding side edge of the base groove of the body and corresponding inner edge of the pop-up plate, wherein each of the first and second foldable pan-shaped plates engages the body through a first hinge and the pop-up plate through a second hinge, wherein each of the first and second foldable pan-shaped plates comprises two sub-plates connected to each other through a third hinge; a plurality of first magnets provided in the pop-up plate for attracting and holding the pop-up plate to the body; and a spring device provided between the pop-up plate and the body, configured for opening the wedge-shaped bellow sound amplifier along with the pop-up plate, wherein the plurality of first magnets and the spring device are configured such that the pop-up plate is kept closed when the pop-up plate is forced to be closed and is flipped open when the pop-up plate is detached and opened by a predetermined angle with respect to the hinging edge.