| 摘要 |
A pinwheel comprises a rotating seat, a screw rod passing through the rotating seat, a head disposed on a top end of the screw rod, and a plurality of blades connected to the rotating seat. The screw rod has a tip end. The rotating seat has a center hole, a plurality of periphery recesses, a plurality of enlarged grooves, a round hole, and a plurality of blocking plates. Each of the periphery recesses communicating with each of the corresponding enlarged grooves. A plug has a guide plate. The guide plate has a camber edge. The guide plate is inserted in the round hole. A spring is inserted in the round hole. A screw screws the round hole. Each of the blades has a post. The screw rod has a screw recess to receive the camber edge. Each of the posts is inserted in each of the corresponding enlarged grooves. Each of the blades is inserted in each of the corresponding periphery recesses.
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