Variable spoiler device for rear bumper of vehicle

摘要

A variable spoiler device may include a spoiler panel, which closely contacts a rear bumper in a retracted state, to perform a rear bumper function, and protrudes downwards from the rear bumper in a protruded state, to perform a spoiler function. Link mechanisms, which enable retraction and protrusion operations of the spoiler panel, continuously secure support force withstanding wind pressure in a protruded state of the spoiler panel.

主权项

1. A variable spoiler device for a rear bumper of a vehicle comprising:
a drive motor fixedly mounted to a rear back beam; a spoiler panel to operate by drive power received from the drive motor via drive shaft of a power transmission mechanism, the spoiler panel performing a retraction operation to cause the spoiler panel to closely contact a lower surface of the rear bumper, and performing a protrusion operation to cause the spoiler panel to move downwards from the rear bumper to a protruded position; a pair of link mechanisms to connect the spoiler panel to the power transmission mechanism to enable the retraction and protrusion operations of the spoiler panel; and a pair of support brackets fixedly mounted to the rear back beam while supporting the link mechanisms such that the link mechanisms are pivotable through pivotal coupling thereof to the support brackets, respectively, wherein each of the link mechanisms comprises:
a drive link coupled to the corresponding end of the drive shaft of the power transmission mechanism, to rotate together with the drive shaft;a fixed link mounted to an inner surface of the spoiler panel, to be fixed in forward and rearward directions of the vehicle, to control a protrusion angle of the spoiler panel;a driven link pivotally coupled to the drive link and the fixed link at opposite ends thereof, respectively, to connect the drive link and the fixed link, to transmit rotation force of the drive link to the fixed link; andfirst and second support links each pivotally coupled to the fixed link and a corresponding one of the support brackets at opposite ends thereof, respectively, to connect the fixed link and the corresponding support bracket, to generate support force against wind pressure when the spoiler panel protrudes.