Patent ID: 8366173

Claim:
A locking device of car covers for pick-up trucks, comprising, a swing stem ( 2 ); a lock hook ( 3 ) inserted into and disposed on the swing stem ( 2 ), a first end part of the swing stem ( 2 ) being inserted into a locking swing handle ( 4 ); a hinge block ( 1 ) is disposed on a car cover; at least one groove ( 9 ) cut on the hinge block ( 1 ); a first screw stem ( 7 ) is disposed on the hinge block ( 1 ), a screw part of the first screw stem ( 7 ) piercing through the groove ( 9 ); and an iron ring ( 6 ) secured with a second end part of the swing stem ( 2 ) via a second screw stem ( 5 ), wherein the iron ring ( 6 ) is pivotally coupled with the first screw stem ( 7 ) and thus pivotally coupled with the hinge block ( 1 ).