| 摘要 |
PURPOSE:To improve reliability and durability with free use of parts on the market by winding an electric supply coil and a receiving coil on the positions, opposing each other, of inner and outer cylinders in a coaxial arrangement, and attaching one of the cylinders to the rotary shaft of a tire and the other to the stationary part of a car body in the tire inner pressure indication and/or alarm of a shaft fixing type vehicle having no suspension device such as a spring, etc. CONSTITUTION:A transmission coil means is constituted by an inner cylinder 11 and an outer cylinder 12 in a coaxial arrangement. The primary coil CM1 for supplying electric power of a magnetic connection device and the secondary coils CSa2, CSb2 of a magnetic connection device for the pneumatic pressure signal of dual tires are wound on the outer circumference of the inner cylinder 11. The secondary coil CM2 for receiving of the magnetic connection device and primary coils CSb1, SCa1 for a pneumatic signal and for magnetic connection are wound on the inner surface of the outer cylinder 12. A magnetic core CMc is installed on the inside of a palce on which the magnetic connection device of the inner cylinder is wound so that efficiency of magnetic connection is improved. The inner cylinder 11 is attached to a car body side and the outer cylinder 12 to a wheel coaxially. According to this constitution, use of parts on the market is allowed so that reliability and durability can be im proved. |
