GAS SUPPLY DEVICE FOR TIRE INTERNAL PRESSURE FILLING, WHEEL RIM FOR TIRE, VEHICULAR HUB, VEHICLE, AND GAS FILLING METHOD FOR PNEUMATIC TIRE

摘要

PROBLEM TO BE SOLVED: To provide a gas supply device for tire internal pressure filling that requires no communicating holes for air passage in a vehicle axle and impairs no appearance quality.;SOLUTION: Air from the vehicle side is supplied into a tire via piping 74, a rotary joint 10, air piping 42 and an air valve 40. A ringlike case 24 of the rotary joint 10 interposed between a hub 16 and a wheel rim 20 is rotatable relative to a body part 22 fixed to the hub 16, and can be thus kept nonrotating even while the body part 22 is rotated along with the hub 16 and the wheel rim 20, so that air can be supplied into the tire even upon tire rotation.;COPYRIGHT: (C)2002,JPO