| 摘要 |
A spoke wheel having an aerodynamic force improvement structure is provided to secure a space for cooling brake frictional heat when a car stops and close the space to restrain generation of vortex when the car runs. A spoke wheel having an aerodynamic force improvement structure includes a rim(1), a wheel center(2), a plurality of spokes(3), and an empty space(4). The rim and the wheel center are connected through the spokes. The empty space is interposed between neighboring spokes. A wing member(20) having a plurality of shields is rotatably attached to the wheel center. An air inlet(30) is included in a wheel. A resistant film(22) for air flowing through the air inlet is located under the shields. A stopper(23) is arranged apart from the resistant film. The stopper and the resistant film are connected to each other through an elastic member(24). The shields of the wing member selectively open/close the empty space between neighboring spokes according to the speed of a car.
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