Rear view device for a vehicle
A rear view device for a vehicle for optimizing airflow includes a spoiler, the spoiler including a flexible surface layer (which is reversibly deformable and which is arranged to cover an opening in a surface of the rear view mirror. The spoiler may include at least one stamp having active material for deforming the flexible surface layer where the at least one stamp is adapted to translate between a retracted and a deployed position.
1. A rear view device for a vehicle comprising a spoiler for optimizing airflow, the spoiler comprising:
a flexible surface layer which is reversibly deformable and which is arranged to cover an opening in a surface of the rear view device; and
at least one stamp comprising active material for deforming the flexible surface layer, wherein the at least one stamp is adapted to translate between a retracted and a deployed position.
2. The rear view device of claim 1 , wherein the at least one stamp comprises only active material.
3. The rear view device of claim 2 , wherein the flexible surface layer comprises the at least one stamp with the active material being arranged throughout the entire surface of the flexible surface layer.
4. The rear view device of claim 2 or 3 , wherein the flexible surface layer is a membrane which is made of active material.
5. The rear view device of claim 1 , wherein the spoiler comprises at least two stamps.
6. The rear view device of claim 1 , wherein at least one of the at least one stamp is orientated substantially parallel to the flexible surface layer in the retracted position.
7. The rear view device of claim 1 , wherein at least part of at least one of the at least one stamp moves substantially along a curved line between the retracted and the deployed position.
8. The rear view device of claim 1 , wherein at least part of at least one of the at least one stamp moves substantially along a straight line between the retracted and the deployed position.
9. The rear view device of claim 1 , wherein at least one of
the active material is an electroactive polymer (EAP) material comprising at least one of an interpenetrating polymer network (IPN), a conducting polymer (CP), a dielectric polymer, carbon nanotubes (CNTs), a carbide derived carbon (CDC), Graphene, Nafion, and combinations thereof;
the active material based on EAP material is ionic or electric in nature; and
the active material comprises at least one of a shape memory alloy (SMA), a ferromagnetic shape memory alloy (FSMA), a shape memory polymer (SMP), a bi-metal actuator, an ionic polymer composite (IPMC), a piezoelectric ceramic, a piezoelectric polymer, an electrostrictor, a magnetorestrictor comprising Terfenol-D, and combinations thereof.
10. The rear view device of claim 1 , wherein the rear view device comprises at least two spoilers, and the flexible surface layer is arranged in one single piece on at least two openings for the at least two spoilers in the surface of the rear view device.
11. A system for a vehicle, comprising
the rear view device according to claim 1 ; and
an activation unit for activating the at least one stamp of the at least one spoiler for deforming the flexible surface layer.