Tonneau Cover Holddown System

A tonneau cover holddown assembly for securing a bulkhead panel of a tonneau cover to a rail positioned on a sidewall of a cargo box of a truck, the tonneau cover holddown assembly comprising:

• a pocket assembly disposed through an underside surface of the bulkhead panel;
• wherein the pocket assembly includes a channel extending therein;
• an end cap attached to the pocket assembly, the end cap having a keyhole in communication with the channel;
• a bolt assembly that includes:
• a bolt with a head;
• wherein the head is sized to fit through the keyhole and slide within the channel;
• wherein the bolt includes a threaded fastener post that extends from the head;
• wherein the head is wider than the threaded fastener post;
• a nut threaded onto the threaded fastener post;
• and
• a clamp attachable to the rail, wherein the clamp includes:
• an arm portion with a bore disposed therethrough for receiving the threaded fastener post, and
• a hook extending from the arm portion for engaging a corresponding hook on the rail.

A tonneau cover holddown assembly for securing a bulkhead panel of a tonneau cover to a rail positioned on a sidewall of a cargo box of a truck, the tonneau cover holddown assembly comprising:

• a slot disposed through an underside surface of the bulkhead panel, the slot including a keyhole in communication with the slot;
• a bolt including a bolthead sized to fit through the keyhole and to slide within the slot;
• wherein the bolthead is wider than the slot;
• a threaded fastener post extending from the bolthead and a nut threaded onto the threaded fastener post;
• a clamp attachable to the rail, the clamp including:
• an arm portion with a bore disposed therethrough for receiving the threaded fastener post,
• a hook extending from the arm portion for engaging a corresponding hook on the rail,
• a first clamp flange positioned above the hook and engageable with a first portion of the rail,
• a second clamp flange extending from the hook transverse to the first clamp flange and engageable with a second portion of the rail,
• wherein, when the hook engages the corresponding hook on the rail, engagement of the first clamp flange with the first portion of the rail and the second clamp flange with the second portion of the rail prevent the clamp from falling off the rail during installation;
• and
• wherein, when the nut is tightened onto the threaded fastener post, the clamp is drawn toward the slot to further tighten the hook onto the corresponding hook on the rail to secure the bulkhead panel to the rail.