Nacelle for a turbofan engine, said nacelle comprising: - a fixed structure, - a fixed cowl mounted fixedly on the fixed structure and a mobile cowl that is able to move in translation with respect to the fixed structure in a direction of translation between a closure position in which it is moved close to the fixed cowl and an opening position in which it is moved away from the fixed cowl to the rear, - motive means that are intended to move the mobile cowl from the closure position to the opening position and vice versa, - a window that is delimited in the upstream direction by the fixed cowl and in the downstream direction by the mobile cowl, said window being open between a duct for a secondary flow and the outside of the nacelle, - a reverser flap mounted so as to be able to move in rotation about an axis of rotation between a stowed position in which it is positioned inside the mobile cowl and an active position in which it is moved across the duct, and - a drive mechanism that is intended to coordinate and defer the movement of the reverser flap from the stowed position to the active position with the movement of the mobile cowl from the closure position to the opening position, and vice versa, said drive mechanism comprising: - two connecting rods, each one comprising a proximal end mounted so as to be able to move in rotation on the fixed structure about a connecting rod axis parallel to the axis of rotation and a distal end bearing a wheel which is mounted so as to be able to move in rotation about a wheel axis that is parallel to the axis of rotation, - for each wheel, a groove that is as one with the mobile cowl and comprises a straight portion and an arcuate portion, the straight portion being parallel to the direction of translation and extending to the rear of the arcuate portion, where the wheel runs in said groove, - a guide is as one with the reverser flap, and - a slider being, on one hand, mounted so as to be able to move in rotation between the two connecting rods about a slider axis parallel to the axis of rotation, and, on the other hand, mounted so as to be able to slide along the guide. - a fixed structure, - a fixed cowl mounted fixedly on the fixed structure and a mobile cowl that is able to move in translation with respect to the fixed structure in a direction of translation between a closure position in which it is moved close to the fixed cowl and an opening position in which it is moved away from the fixed cowl to the rear, - motive means that are intended to move the mobile cowl from the closure position to the opening position and vice versa, - a window that is delimited in the upstream direction by the fixed cowl and in the downstream direction by the mobile cowl, said window being open between a duct for a secondary flow and the outside of the nacelle, - a reverser flap mounted so as to be able to move in rotation about an axis of rotation between a stowed position in which it is positioned inside the mobile cowl and an active position in which it is moved across the duct, and - a drive mechanism that is intended to coordinate and defer the movement of the reverser flap from the stowed position to the active position with the movement of the mobile cowl from the closure position to the opening position, and vice versa, said drive mechanism comprising: - two connecting rods, each one comprising a proximal end mounted so as to be able to move in rotation on the fixed structure about a connecting rod axis parallel to the axis of rotation and a distal end bearing a wheel which is mounted so as to be able to move in rotation about a wheel axis that is parallel to the axis of rotation, - for each wheel, a groove that is as one with the mobile cowl and comprises a straight portion and an arcuate portion, the straight portion being parallel to the direction of translation and extending to the rear of the arcuate portion, where the wheel runs in said groove, - a guide is as one with the reverser flap, and - a slider being, on one hand, mounted so as to be able to move in rotation between the two connecting rods about a slider axis parallel to the axis of rotation, and, on the other hand, mounted so as to be able to slide along the guide. - two connecting rods, each one comprising a proximal end mounted so as to be able to move in rotation on the fixed structure about a connecting rod axis parallel to the axis of rotation and a distal end bearing a wheel which is mounted so as to be able to move in rotation about a wheel axis that is parallel to the axis of rotation, - for each wheel, a groove that is as one with the mobile cowl and comprises a straight portion and an arcuate portion, the straight portion being parallel to the direction of translation and extending to the rear of the arcuate portion, where the wheel runs in said groove, - a guide is as one with the reverser flap, and - a slider being, on one hand, mounted so as to be able to move in rotation between the two connecting rods about a slider axis parallel to the axis of rotation, and, on the other hand, mounted so as to be able to slide along the guide.