Reducing mechanism for car

The utility model discloses a reducing mechanism for a car. The reducing mechanism comprises a base and a transmission unit. The transmission unit is connected with the base, and a transmission wheel comprises a driving mechanism and a driven mechanism. The driving mechanism comprises a driving wheel, and the driven mechanism comprises a driven wheel. The diameter of the driving wheel is smaller than that of the driven wheel. A transmission part wound on the driving wheel and the driven wheel is arranged on the transmission unit. The reducing mechanism has the advantages that the transmission part wound on the driving wheel and the driven wheel is used for achieving reducing transmission, and accordingly, a complex gear structure is omitted, the structure is simplified, and the production cost is reduced; by the cross winding of the transmission part, the driving wheel and driven wheel contacting length is increased, and accordingly, friction between the transmission part and the driving wheel and driven wheel is increased, the reducing effect is good, and the operation condition is stable.