Patent ID: 8079929

Claim:
A differential for a model car, comprising: a housing having a chamber, and four notches recessed in a periphery of said chamber and arranged in a crisscross manner, each said notch having a trapezoid section to define a top side and a bottom side that is longer than said top side; four blocks each received in one of said notches of said housing; a spider having four ends connected with said blocks respectively; four first bevel gears respectively sleeved on said four ends of said spider; two second bevel gears received in said chamber of said housing and engaged with said first bevel gears respectively; a main gear sleeved on said housing; and two output shafts, one of said output shafts passing through said main gear and being connected with one of said second bevel gears, and the other one of said output shafts passing through said housing and being connected with the other one of said second bevel gears; and wherein each of said blocks has a trapezoid section mating with the trapezoid section of a respective one of said notches.