This mechanism converts the radial travel of a motor-driven cam into the angular motion needed to raise or lower a spoiler. The blue cam is pushed outward by the actuator, causing the green linkages to pivot in sequence. Their combined action drives the yellow pushrods, which finally tilt the large yellow spoiler panel about its hinge.

Components — Blue sliding cam, purple motor/actuator, green four-bar linkage arms, yellow pushrods, spoiler hinge brackets, and the large yellow spoiler panel.

How it works — When the motor extends the blue cam radially, the cam¡¯s motion pulls the green linkage pair inward, causing them to rotate around their pivots. As the links fold, they drive the yellow pushrods forward, pushing on the hinge brackets and rotating the spoiler upward. Reversing the motor retracts the cam, unfolding the linkage and lowering the spoiler back to its resting angle. The transformation from linear cam travel to controlled wing rotation is achieved entirely through the coordinated geometry of the green link network.

Applications — Automotive active spoilers, aerodynamic control surfaces, deployable flaps, ventilation panels, and mechanisms needing compact motion conversion from linear to angular movement.

Why it matters — This layout places the actuator safely away from the spoiler while still delivering strong, precise motion. The linkage multiplies small cam travel into a large wing rotation, offering smooth operation, compact packaging, and reliable deployment under load.