Tire pressure control system having rotary feedthrough

A tire pressure control system for a motor vehicle, comprising:

• a rotary feed through having a stator and a rotor for transferring compressed air from a compressed air source on a vehicle side to the rotor, said rotor designed to support a wheel;
• the rotary feed through further comprising an annular chamber located between the rotor and the stator, the annular chamber can be sealed off by activatable seals into which both a stator side and a rotor side air channel open;
• the activatable seals can be activated for the purpose of compressed air transfer and are disposed spaced apart in an axial arrangement having approximately the same radial spacing from the rotary axis of the rotor;
• the activatable seals are designed to operate facing away from each other, and are disposed on a stator flange engaging in an annular groove of the rotor and when activated for the purpose of sealing the annular chamber, act against groove walls of the rotor side annular groove which are situated opposite one another;
• and
• the part of the annular groove is sealed off from the activated seals forms the annular chamber.

A tire pressure control system for a motor vehicle, comprising:

• a rotary feed through having a stator and a rotor for transferring compressed air from a compressed air source on a vehicle side to the rotor, said rotor designed to support a wheel;
• the rotary feed through further comprising an annular chamber located between the rotor and the stator, the annular chamber can be sealed off by activatable seals into which both a stator side and a rotor side air channel open;
• the activatable seals can be activated for the purpose of compressed air transfer and are disposed spaced apart in an axial arrangement having approximately the same radial spacing from the rotary axis of the rotor;
• the rotary feed through having two channels, a first channel for transferring compressed air for tire inflation and a second channel for transferring control air for actuating an actuator associated with the rotor;
• said first channel having an annular groove present between the activatable seals and open to the rotor in the radial direction which engages a rotor flange, said annular groove having opposite outer sides;
• wherein the activatable seals operate facing each other and act against the opposite outer sides of the annular groove for the purpose of sealing off the annular chamber;
• said second chamber having the activatable seals designed to operate facing away from each other, and are disposed on a stator flange engaging in an annular groove of the rotor and when activated for the purpose of sealing the annular chamber, act against groove walls of the rotor side annular groove which are situated opposite one another;
• the part of the annular groove is sealed off from the activated seals forms the annular chamber;
• and
• wherein the rotary feed through comprises, two exterior seals and one interior seal in an axial arrangement, the interior seal separates the annular chamber of the first channel and the second channel from each other when activated.