Box of miniature gearbox of bicycle

The utility model discloses a box of miniature gearbox of bicycle involves the box of bicycle axis derailleur. A box of miniature gearbox of bicycle which characterized in that: the box connecting hole is passed through with the bolt and the box will be gone up, the nowel body coupling is as an organic whole, it forms the countershaft hole after box and nowel bodily form one -tenth an organic whole to go up, the main shaft hole, be equipped with the shift fork hole on the top of last box, the slider spout, the spring groove, slider apron seat, the upper cover panel seat, central authorities at the front end upper surface of last box are equipped with the groove of acting as go -between, the left and right sides of box be equipped with the bearing frame at last box under with, be equipped with the spring position fixing hole at the spring inslot, the spring pulley locating hole of acting as go -between, be equipped with the cover connection screw hole on slider apron seat. The utility model discloses a box of