Touch-sensitive panel assembly

A touch-sensitive panel assembly, comprising

• a panel module having a touch-sensitive panel and a circuit board behind said touch-sensitive panel where a plurality of through holes are provided along said the circuit board's circumference;
• a back frame having a back piece and two lateral pieces, forming a U-like shape where said back piece has a plurality of bolt holes, and, along an inner surface adjacent to a front end of each lateral piece, at least two first fastening elements and at least a second fastening element, each with a bolt hole, are vertically arranged in this sequence;
• a front piece having a panel opening and a plurality of third fastening elements on a back surface of said front piece, where each said third fastening element is threaded through a said through hole of said panel module, and aligned with a said first fastening element, a plurality of bolts are driven through said back frame's bolt holes and lock said third and fourth fastening elements together, with said touch-sensitive panel exposed from said panel opening;
• and
• a disk module positioned beneath said front piece and said panel module having a plurality of connectors along a back side and a plurality of fourth fastening elements, each corresponding to a said second fastening elements of said back frame, where a plurality of bolts are driven through bolt holes of said back frame to lock said fourth and second fastening elements together.