Patent ID: 11933311
Assignee: ASIA VITAL COMPONENTS CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A fan brake structure comprising:
a fan having a frame body, a fan impeller and a stator, a bearing cup being vertically disposed in the frame body, the fan impeller having a shaft vertically disposed in the fan impeller and pivotally disposed in the bearing cup, the stator being fitted around the bearing cup corresponding to the fan impeller, one end of the shaft having a first restriction section; and
a brake device disposed under a bottom of the bearing cup and electrically connected with a circuit board, the brake device having a driving member, a brake member and an elastic member, the elastic member abutting against one end of the brake member, the other end of the brake member having a boss body, the driving member having a spiral rail, when the driving member rotates, the boss body moving along the spiral rail, whereby the brake member linearly reciprocally moves upward to engage with the first restriction section of the shaft and lock the shaft to brake the fan impeller or linearly reciprocally moves downward and the elastic member pushes the brake member to disengage from the first restriction section of the shaft so as to release the fan impeller from the braking.