Abstract: A rim accessory for wheel positioning angle detection is illustrated, which can be detachably installed in a rim of a wheel of a vehicle. The rim accessory has a housing body and a sensor module. The housing body can be detachably installed in the rim, and the sensor module is installed in the housing body, and the sensor module used to generate multiple measurement data. The multiple measurement data are used to calculate multiple inclined angle data of the wheel in respect to at least a reference axis. A warning system and method for the wheel positioning angle detection are also illustrated, the warning system or method is used to compare the inclined angle data with a standard value, and when the inclined angle data deviates from a specific range of the standard value, the warning system or method sends out a warning message.

Abstract: A power supply device used for a wheel rim is mounted on a wheel rim of a vehicle. The power supply device includes a magnetism assembly, an axle member, a magnet, a weight block, a seat, a coil module, and a control module. The seat is disposed on the wheel rim. One side of the seat is provided with an axle seat for connection of the axle member. The seat is driven by the wheel rim to turn relative to the magnetism assembly. When the seat is turned to generate power through the magnet and the coil module, the control module selectively transmits the power to a light-emitting device provided on the wheel rim.

Abstract: A washer for fitting a pitch center diameter of vehicle elements comprises a washer body being a round short cylinder; one side of the washer body having an expansion portion and another side thereof being an inserting portion; a diameter of the inserting portion being smaller than that of the expansion portion; The washer body having an eccentric assembly hole passing through the washer body and having a central shaft shifted from an central shaft of the washer body; and a ring assembled to an outer side of the inserting portion. It is preferably that the ring is a C ring.