SNOWMOBILE FRAME STRUCTURE Russian patent published in 2019 - IPC B62K19/00 B62D55/07 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, in particular to the snowmobiles. Snowmobile includes frame, front and rear suspension assemblies, ski, endless driving caterpillar, engine. Frame comprises a longitudinally extending tunnel with a rear suspension assembly communicated therewith. Tunnel comprises top wall passing horizontally and having left edge and right edge. Flat left chamfer wall extending downward and to the left of left edge. Left sidewall extending downward from left chamfer wall. Flat right chamfer wall passing downwards and to the right from right edge. Right sidewall extending downward from right chamfer wall. Rear upper support containing left post and right post. Each of the left and right posts has a lower end connected to the corresponding wall from the left chamfered wall and the right chamfered wall, and passes forward, upwards and sideways inside from the lower end to the upper end.

EFFECT: higher strength of frame.

20 cl, 24 dwg