PURPOSE: To obtain a suitable device as a power supply for car component parts capable of supplying the stable electrical power to a rotating part side under non-contact condition by a method wherein an AC/DC converter is formed of two cylindrical coils opposed to each other as centering with a rotating axis of a rotating part, while said one coil is fixed to a rotating side and the other coil is fixed to a fixing side.
CONSTITUTION: A steering shaft 4 is fixed to a car body with steering column tube 5, a handle 15 forming a rotor side is fixed at the top of the shaft 4. A rotor core 33, formed in a pot-shape, and made of the magnetic material such as a ferrite and the like is arranged, including a coil 32, centered with the shaft 4 on the handle 15 side, and a fixing side stater core 31 including a coil 30 is arranged opposing to said rotor core 33. A transformer is formed of said two coils, the rotor core 33 is fixed to a mold case 34 made of resin. In such a structure, the alternating electric voltage generated by the coil 32 is converted to the direct electric voltage, then supplied to the necessary parts.
| WO/1997/007047 | COMMUNICATIONS SYSTEM |
HASEGAWA AKIRA
SHIBATA TAKANORI
