Abstract: A fan device includes a frame, a stability maintenance assembly, a shaft, an impeller, and a driving assembly. The frame includes a base and a bearing seat protruding from the base and having an accommodation space. The stability maintenance assembly is disposed in the accommodation space and includes a bearing and a magnet arranged coaxially. The bearing is located above the magnet and magnetized by the magnet. The shaft is disposed through the magnet and the bearing. The impeller is fixed to the shaft so as to be rotatable relative to the frame via the shaft and the bearing. The driving assembly includes a stator and a rotor. The stator is sleeved on the bearing seat of the frame, the rotor is mounted on the impeller and surrounds the stator, and the driving assembly is configured to drive the impeller to rotate relative to the frame.

Abstract: A fan device includes a frame, a stability maintenance assembly, a shaft, an impeller, and a driving assembly. The frame includes a base and a bearing seat protruding from the base and having an accommodation space. The stability maintenance assembly is disposed in the accommodation space and includes a bearing and a magnet arranged coaxially. The bearing is located above the magnet and magnetized by the magnet. The shaft is disposed through the magnet and the bearing. The impeller is fixed to the shaft so as to be rotatable relative to the frame via the shaft and the bearing. The driving assembly includes a stator and a rotor. The stator is sleeved on the bearing seat of the frame, the rotor is mounted on the impeller and surrounds the stator, and the driving assembly is configured to drive the impeller to rotate relative to the frame.

Abstract: A fan frame assembly includes a first fan frame and a second fan frame. The first fan frame includes a first annular wall part and a plurality of first engagement parts connected to the first annular wall part. The second fan frame includes a second annular wall part and a plurality of second engagement parts connected to the second annular wall part. Each of the first engagement parts has a positioning structure extending along an axial direction of the first annular wall part, and each of the second engagement parts has a positioning structure extending along the axial direction of the first annular wall part. when the first engagement parts and the second engagement parts are respectively engaged with each other, the positioning structures of the second engagement parts are positioned by the positioning structures of the first engagement parts.

Abstract: A fan frame assembly includes a first fan frame and a second fan frame. The first fan frame includes a first annular wall part and a plurality of first engagement parts connected to the first annular wall part. The second fan frame includes a second annular wall part and a plurality of second engagement parts connected to the second annular wall part. Each of the first engagement parts has a positioning structure extending along an axial direction of the first annular wall part, and each of the second engagement parts has a positioning structure extending along the axial direction of the first annular wall part. when the first engagement parts and the second engagement parts are respectively engaged with each other, the positioning structures of the second engagement parts are positioned by the positioning structures of the first engagement parts.