Patent ID: 7715202

Claim:
A substrate attachment structure comprising: a chassis including an attachment face with an opening, a hook piece with a leg piece and an engagement prong, the leg piece being formed on the attachment face and extending from an edge portion of the opening of the attachment face, the engagement prong extending from a distal end portion of the leg piece outward of the opening of the attachment face relative to the leg piece with the engagement prong facing the attachment face of the chassis in a direction perpendicular to the attachment face, and a single threaded hole that is formed on the attachment face of the chassis; a substrate disposed on the attachment face of the chassis, the substrate including a single screw insertion hole, and a latching hole with a continuous periphery that receives the hook piece of the chassis to sandwich a portion of the substrate between the engagement prong and the attachment face of the chassis in the direction perpendicular to the attachment face, the leg piece of the hook piece restricting an inward movement of the substrate inward of the opening of the attachment face relative to the leg piece with the inward of the opening directing opposite the outward of the opening; and a single attachment screw disposed through the screw insertion hole that is formed in the substrate and threaded into the threaded hole that is formed on the attachment face of the chassis to fasten the substrate to the chassis, distance between the attachment face and the engagement prong of the chassis in the direction perpendicular to the attachment face being at least thickness of the substrate along the latching hole of the substrate.