Pivoting tonneau cover system for truck

1. A tonneau cover system for a cargo box of a truck, the tonneau cover system comprising:

a cover including a plurality of panels hingedly coupled together, the plurality of panels including a forward panel mountable adjacent a forward end of the cargo box, the forward panel comprising a forward edge, a rear edge, and a first side edge extending between the forward edge and the rear edge, wherein the cover is foldable between an extended configuration in which the cover extends along a first plane to overlie the cargo box and a folded configuration in which the plurality of panels are arranged in a stack on the forward panel; and

a pivot mechanism for attaching the cover to the cargo box, wherein the pivot mechanism includes:

a first link bar having an upper end pivotally connected to the forward panel adjacent the first side edge intermediate the forward edge and the rear edge at a first point located a first distance from the forward edge, and the first link bar having a lower end connectable to a sidewall of the cargo box and a first length, and

a second link bar having an upper end pivotally connected to the forward panel adjacent the first side edge intermediate the forward edge and the rear edge at a second point located a second distance from the forward edge greater than the first distance, and the second link bar having a lower end connectable to the sidewall of the cargo box and a second length greater than the first length,

wherein, with the cover in the folded configuration, the pivot mechanism is designed to move the stack from an initial stack configuration in which the forward panel is in the first plane to a storage stack configuration in which the forward panel of the cover extends upright along a second plane at an angle that is substantially perpendicular to the first plane, and to simultaneously move the forward edge of the forward panel rearwardly and above the first plane.

2. The tonneau cover system of claim 1 further comprising:

a cover linkage connected to the forward panel of the cover, and the upper ends of the first and second link bars pivotably connect to the cover linkage.

3. The tonneau cover system of claim 1 further comprising:

a sidewall linkage connectable to the sidewall of the cargo box and the lower ends of the first and second link bars pivotally connect to the sidewall of the cargo box.

4. The tonneau cover system of claim 1 , wherein the cover includes a first panel, a second panel, and a third panel, and the cover is foldable such that the first panel folds onto the second panel and combination folds onto the third panel, and the forward panel corresponds to the third panel and is the lowermost panel in the stack.

5. The tonneau cover system according to claim 1 , wherein the pivot mechanism further comprises a tilt assist that is connected to the forward panel and is connectable to the cargo box, wherein the tilt assist provides a biasing force against the stack when the stack moves between the initial stack configuration and the storage stack configuration.

6. The tonneau cover system according to claim 5 , wherein the tilt assist is a gas strut.

7. The tonneau cover system according to claim 1 , wherein with the stack in the storage stack configuration, the forward panel of the cover extends upright at an angle between 80 and 110 degrees to the first plane.

8. A tonneau cover system for a cargo box of a truck, the tonneau cover system comprising:

a cover including a plurality of panels hingedly coupled together, the plurality of panels including a forward panel mountable adjacent a forward end of the cargo box, the forward panel comprising a forward edge, a rear edge, and a first side edge extending between the forward edge and the rear edge, wherein the cover is foldable between an extended configuration in which the cover extends along a first plane to overlie the cargo box and a folded configuration in which the plurality of panels are arranged in a stack on the forward panel; and

a pivot mechanism for attaching the cover to the cargo box, wherein the pivot mechanism includes:

a cargo linkage connectable to a sidewall of the cargo box that is adjacent to the forward panel of the cover,

a cover linkage connected to the forward panel of the cover,

a pivot linkage that includes a first link bar and a second link bar, and

a tilt assist has an upper end connected to the cover linkage and through which the upper end is connected to the cover and has a lower end connected to the cargo linkage and through which the lower end is connectable to the sidewall to provide a biasing force against the stack when the stack moves between the initial stack configuration and the storage stack configuration, wherein:

the first link bar has an upper end pivotally connected to the cover linkage and through which the upper end of the first link bar is connected to the forward panel adjacent the first side edge intermediate the forward edge and the rear edge at a first point located a first distance from the forward edge, and the first link bar has a lower end connected to the cargo linkage and through which the lower end of the first link bar is connectable to the sidewall, and the first link bar has a first length,

the second link bar has an upper end pivotally connected to the cover linkage and through which the upper end of the second link bar is connected to the forward panel adjacent the first side edge intermediate the forward edge and the rear edge at a second point located a second distance from the forward edge greater than the first distance, and the second link bar has a lower end connected to the cargo linkage and through which the lower end of the second link bar is connectable to the sidewall, and the second link bar has a second length greater than the first length, and

further wherein, with the cover in the folded configuration, the pivot mechanism is designed to move the stack from an initial stack configuration in which the forward panel is in the first plane to a storage stack configuration in which the forward panel of the cover extends upright along a second plane, and to simultaneously move the forward edge of the forward panel rearwardly and above the first plane.

9. The tonneau cover system according to claim 8 , further comprises:

a lock mechanism disposed along the forward panel of the cover and operable to fasten the cover to the pivot mechanism, wherein

the cargo linkage of the pivot mechanism includes a lock interface that engages with the lock mechanism to fasten the cover to the pivot mechanism.

10. The tonneau cover system according to claim 8 , wherein the tilt assist is a gas strut.

11. The tonneau cover system according to claim 8 , wherein the cargo linkage of the pivot mechanism is positioned along an interior of the cargo box.

12. The tonneau cover system according to claim 8 , wherein the forward panel is lowermost panel in the stack when the stack is in the initial stack configuration.

13. The tonneau cover system of claim 8 , wherein the cover includes a first panel, a second panel, and a third panel, and the cover is foldable such that the first panel folds onto the second panel and combination folds onto the third panel, and the forward panel corresponds to the third panel and is the lowermost panel in the stack.

14. The tonneau cover system according to claim 8 , wherein with the stack in the storage stack configuration, the forward panel of the cover extends upright at an angle that is substantially perpendicular to the first plane.

15. The tonneau cover system according to claim 8 , wherein with the stack in the storage stack configuration, the forward panel of the cover extends upright at an angle between 80 and 110 degrees to the first plane.