Adjustment options
silent, light and small

Silent movement and adjustment of ventilation openings in confined spaces is a technical challenge, whether dealing with grilles, louvers, or flaps. Examples range from small slit vents to larger round ventilation grilles. The mechanisms demonstrate what energy-efficient solutions look like, where it is possible to maintain a position without energy consumption—without a continuous power supply—using a Curve actuator. This requires two Curve actuators, one for the "open" movement direction and one for the "close" direction. To adjust positions, only one of the actuators needs to be briefly activated, and only as far as the position adjustment requires. This allows for silent active functions with minimal energy consumption. Multi-stable concepts can hold any position between open and closed after an actuator has moved the lid to the desired position. Alternatively, there are concepts with a self-locking effect that rely on dedicated locking positions. A unique advantage with the Curve bending actuator is that the actuator can be placed directly in the air duct, as the air flow is not obstructed by the flat design of the actuators. The high robustness of the actuator is also advantageous for applications like this, as dirt and moisture are not critical for the actuator. Ultimately, the key benefit for the user is comfort, as noise and vibrations are eliminated. This is particularly relevant for many passenger-related functions, such as in modern and especially quiet electric vehicles, where traditional ventilation actuators suddenly "buzz" somewhere. This is also the key to electrifying the overhead air vents in overhead compartments of commercial aircrafts, making them pleasantly usable for every passenger.