Active air skirt apparatus for mobility
An active air skirt apparatus for a mobility is configured to control an airflow beneath the mobility according to a driving situation of the mobility to ensure optimal aerodynamic performance in the mobility having a flat lower portion for loading a high-voltage battery. That is, improvement of airflow to the front wheel and rear wheel along with improvement of airflow beneath the mobility in each driving situation optimizes the aerodynamic performance of the mobility, thereby ensuring mileage and improving attitude stability of the mobility.
1. An active air skirt apparatus for a mobility, comprising:
a side flap configured to be installed in a mobility body and positioned to the front of a front wheel or stowed depending on actuation to selectively block airflow to the front wheel;
a side drive unit configured to be installed in the mobility body and connected to the side flap to adjust the position of the side flap according to control; and
a control unit configured to control the side drive unit according to a driving state of the mobility,
wherein the side flap includes a first skirt and a second skirt spaced apart from each other in a front/rear direction in front of the front wheel,
wherein the side drive unit is provided with a screw rotating during operation, and
wherein the first skirt and the second skirt are linked to the screw by a link unit so that positions of the first skirt and the second skirt are adjusted together during an operation of the side drive unit.
2. The active air skirt apparatus of claim 1 , wherein the mobility has a flat lower portion.
3. The active air skirt apparatus of claim 1 , wherein the side flap and the side drive unit are disposed on each of a pair of front wheels to allow air to flow between the side flaps.
4. The active air skirt apparatus of claim 1 , wherein the first skirt and the second skirt partially cover a front of the front wheel.
5. The active air skirt apparatus of claim 4 , wherein the first skirt and the second skirt cover both inner and outer sides of the front wheel and extend longer to the inner side.
6. The active air skirt apparatus of claim 4 , wherein the first skirt extends downward longer than the second skirt and has a greater total area than the second skirt.
7. The active air skirt apparatus of claim 1 , wherein the first skirt is installed movably in an up/down direction in the mobility body and provided with a first connecting rod at an upper end.
8. The active air skirt apparatus of claim 1 , wherein the link unit includes a first rod portion extending in the front/rear direction, a first front gear provided at one end of the first rod portion and gear-fastened to the first connecting rod, and a first rear gear provided at the other end of the first rod portion and gear-fastened to the screw.
9. The active air skirt apparatus of claim 1 , wherein the second skirt is spaced apart from the first skirt, installed movably in an up/down direction, and provided with a second connecting rod at an upper end.
10. The active skirt apparatus of claim 9 , wherein the link unit includes a second rod portion extending in the front/rear direction, a second front gear provided at one end of the second rod portion and gear-fastened to the screw, and a second rear gear provided at the other end of the second rod portion and gear-fastened to the second connecting rod.
11. The active air skirt apparatus of claim 1 , further comprising:
a center flap installed between the side flaps in the lower portion of the mobility, pulled out or stowed in the lower portion of the mobility depending on actuation to selectively block the airflow; and
a center drive unit connected to the center flap to adjust the position of the center flap according to a control of the control unit.
12. The active air skirt apparatus of claim 11 , wherein:
the center flap is installed movably in an up/down direction in the mobility body, and
a plurality of center drive units is provided to be respectively connected to either end of the center flap.
13. The active air skirt apparatus of claim 11 , wherein:
the center flap includes a connecting portion extending obliquely and is connected to the center drive unit by a multi-joint link, and
the multi-joint link includes a plate coupled to the mobility body, an actuating link having one end connected to one side of the plate and the other end connected to one side of the connecting portion and extending linearly, and a support link having one end connected to the other side of the plate and the other end connected to the other side of the connecting portion and extend curvilinearly.
14. The active air skirt apparatus of claim 11 , wherein a low-speed driving mode, a fuel economy driving mode, and a high-speed driving mode are preset in the control unit according to driving states of the mobility and the control unit controls positions of the side flaps and center flap in each mode.
15. The active air skirt apparatus of claim 14 , wherein the control unit controls the side drive unit and the center drive unit such that both the side flap and the center flap are stowed in the low-speed driving mode.
16. The active air skirt apparatus of claim 14 , wherein the control unit controls the side drive unit and the center drive unit such that the side flap is pulled out and the center flap is stowed in the fuel economy mode.
17. The active air skirt apparatus of claim 14 , wherein the control unit controls the side drive unit and the center drive unit such that both the side flap and the center flap are pulled out in the high-speed driving mode.
18. A vehicle comprising the active air skirt apparatus of claim 1 .