| 摘要 |
PURPOSE:To improve the reliability, by connecting a car body fixed section and a steering section with a contactless method, reducing a required space for wirings remarkably by means of arranged jumpers, and preventing the mixing of noise. CONSTITUTION:A rotary transformer 3 is placed in opposition to a shaft of the steering section and the fixed section, magnetic cores 4, 5, and coils 4a, 5a are formed at the inside, allowing to attain stable electromagnetic coupling and transforming performance regardless of the rotation of the steering. The coils 4a, 5a are shielded for electromagnetic waves in an excellent way to external devices and are connection elements of a transmission line hardly invaded with noise. Signals are converted into AC at an inverter 10 and given to a synthesis and separation circuit 11. Further, a transmission signal is given to the circuit 11 and superimposed on a positive half wave of a power transmission wave and transmitted to a synthesis separation circuit 16 of the steering section 1 via the rotary transformer 3, signals are separated from the power transmission waves at the circuit 16 and the signals are given to a reception demodulation circuit 20. The power transmission wave transmitted from the circuit 16 to a rectifying and stabilization circuit 17 is converted into DC and applied to each circuit. |
