Pulley of toy is assembled to children

The utility model discloses a pulley of toy is assembled to children, a serial communication port, including protecgulum, pulley main part and hou gai, the integrative injection moulding of pulley main part, the protecgulum includes preceding lid, the back lid is including the back lid, preceding lid, pulley main part and back lid middle part respectively coaxial have a perfect understanding set up corresponding in the middle of first in the middle of through -hole, the second in the middle of through -hole and third through -hole, center on first middle through -hole and the middle through -hole of third equidistant a plurality of corresponding first through -holes and the third through -hole of being provided with of circumference respectively on preceding lid and the back lid, be equipped with respectively in the pulley main part with before the second of first through -hole butt joint the hole and with the second metapore of third through -hole butt joint, the pulley main part is provided with a plurality