Auto-locking torque distributing mechanism

An auto-locking torque distributing mechanism comprising:

• a main plate driven by a power source of a vehicle;
• said main plate including a body and a blocking wall recessed into said body, wherein said body having slots and apertures respectively formed at two sides of said body and a limiting unit disposed inside each slot and located relative to each aperture;
• each slot being disposed to extend from a place adjacent to a periphery at one side of said body toward said blocking wall, and each aperture being disposed adjacent to an opposite periphery at the other side of said body and communicated with said slot partially;
• said blocking wall forming two communicated rooms which are connected to said slots and connecting a bottom wall on which two first caves are respectively defined to communicate with said rooms;
• two gear sets disposed in said rooms for meshing with each other;
• a backing plate disposed at one side of said main plate, said backing plate including second caves corresponding to said first caves and allowing said gear sets to penetrate therethrough;
• two respective transmission assemblies connected to said gear sets, said transmission assemblies being connected to two side axles of said vehicle, whereby said transmission assemblies, said axles, and said gear sets are driven mutually;
• and
• a sleeve assembly disposed at the other side of said main plate to cover one of said transmission assemblies, wherein said sleeve assembly including a covering unit enclosed by a first wall and a second wall and a connecting portion extending outward from said covering unit, an opening being enclosed by said first wall of said covering unit, said connecting port ion including an extension section connected to said second wall of said covering unit and inserted into an interior of said covering unit, each aperture being communicated with said opening and located near said first wall.