X- SPREAD FRONT-WHEEL-DRIVE X-TYPE FOLDING BIKE

摘要

Spread all-wheel drive X-type folding bikes are disclosed. Spread all-wheel drive X-type folding bike, front wheel; A pedal coupled to the front wheel; A vertical support frame coupled to the rotation axis of the front wheel; A saddle support frame that is coupled to the rotation axis of the front wheel and rotates around the rotation axis so that the distance from the vertical support frame is fluid; A saddle assembly coupled to the distal end of the saddle support frame; On the lower side of the saddle assembly, a variable fastening part engaged with the saddle support frame and a distal end of the vertical support frame coupled to the saddle support frame in a stepwise manner depending on the distance between the front wheel and the rear wheel. A main support frame having an engaging portion and crossing the saddle support frame in an X-shape; A rear wheel coupled to one end of the main support frame; And a handle part coupled to the other end of the main support frame.