Patent ID: 7861616

Claim:
A vehicle transmission adapted to transmit a power output from an engine unit to a wheel, said vehicle transmission comprising: a driving unit including a main box, a first driving mechanism disposed within said main box and adapted to be driven by the engine unit, and an output shaft driven by said first driving mechanism; and a speed-changing unit including an auxiliary box connected removably to said main box and covering an end of said output shaft, a second driving mechanism disposed within said auxiliary box and driven by said output shaft, and an axle parallel to said output shaft and having a first end adapted to be connected fixedly to the wheel, and a second end opposite to said first end and extending into said auxiliary box, said axle being driven by said second driving mechanism, wherein: said main box of said driving unit has a main housing portion and a main cover portion interconnected removably to define a first receiving space allowing for mounting of said first driving mechanism therewithin, said output shaft extending through said main housing portion; and said auxiliary box of said speed-changing unit has an auxiliary housing portion and an auxiliary cover portion interconnected removably to define a second receiving space allowing for mounting of said second driving mechanism therewithin, said auxiliary cover portion being connected removably to said main housing portion and allowing for extension of said output shaft therethrough, said auxiliary housing portion covering said end of said output shaft and allowing for extension of said axle therethrough; and wherein one of said main and auxiliary boxes is formed with a plurality of positioning holes, and the other of said main and auxiliary boxes is formed with a plurality of positioning pins engaging said positioning holes, respectively, to position said main and auxiliary boxes relative to each other.