SECONDARY REDUCTION STEER DRIVE HUB ASSEMBLY FOR VEHICLE HAVING CENTRAL TIRE INFLATION SYSTEM

摘要

The present invention relates to a steering drive hub assembly for a vehicle having a tire air pressure control function improving drive stability performance of a vehicle. According to an embodiment of the present invention, the steering drive hub assembly for a vehicle having a tire air pressure control function comprises: a spindle; a sleeve; a hub; and a first sealing member. The spindle is installed in the outside of a drive shaft and has a first flow passage guiding movement of a high pressure air. The sleeve is installed in the outside of the spindle and has a second flow passage connected with the first flow passage. The hub is installed in the outside of the spindle and rotates by connecting with a reduction device coupled with the drive shaft and has a chamber connected with the second flow passage and a third flow passage connected with the chamber. Moreover, a first sealing member is installed in the chamber to be rotated with the hub together and maintains a sealing state to prevent the high pressure air of the chamber from being leaked between the hub and the sleeve.