Transmission System For Tire State Quantities

A transmission device for a motor vehicle for transmitting signals about tire condition variables from a wheel to an electronic unit arranged in the vehicle body, wherein the tire condition variables can be detected especially by one or a plurality of sensor subassemblies (14) which are arranged in a wheel rotatably mounted at the body above the wheel hub (3), the device comprising:

• a coupling device is integrated into a wheel hub, which is composed of a rotor (6a) and a non-rotating stator (6b) to generate a field coupling, and whose one or more field coupling elements (20, 22, 34a, 34b, 39a, 39b) are opposite each other, separated by a narrow air slot (24), and a signal coupling takes place by at least one of electric fields, magnetic fields, and electromagnetic fields, and least one of the rotor (6a) and the stator (6b) is subdivided in a circumferential direction into two or more sectors, with the sectors including a differing magnetic coupling for a rotational-speed-responsive field coupling of rotor (6a) and stator (6b).

A vehicle wheel equipped with sensors, the vehicle wheel comprising:

• a wheel rim (1);
• a tire (2);
• one or more sensor subassemblies (13) rotating with the wheel, a coupling device is integrated into a wheel hub, which is composed of a rotor (6a) and a non-rotating stator (6b) to generate a field coupling, and whose one or more field coupling elements (20, 22, 34a, 34b, 39a, 39b) are opposite each other, separated by a narrow air slot (24), and a signal coupling takes place by at least one of electric fields, magnetic fields, and electromagnetic fields, and least one of the rotor (6a) and the stator (6b) is subdivided in a circumferential direction into two or more sectors, with the sectors including a differing magnetic coupling for a rotational-speed-responsive field coupling of rotor (6a) and stator (6b).