Thin fan structure
First Claim
Patent Images
1. A thin fan structure comprising:
- a driving unit having a base, a coil circuit board disposed on the base and a fixed shaft; and
a rotating unit having a bearing, a fan blade, a magnet and an iron-containing metal sheet, wherein the bearing has an outer ring and an inner ring, the fan blade, the magnet and the iron-containing metal sheet are fixed at the outer ring of the bearing, the inner ring of the bearing is fixed at the shaft of the driving unit and the coil circuit board of the driving unit may drive the rotating unit to turn around, the fan blade having a cavity containing the iron-containing metal sheet and the magnet so as to be effectively integrated and reducing an axial thickness;
the fan blade, the magnet and the iron-containing metal sheet each having a surface simultaneously engaging and being in direct contact with the outer ring of the bearing to increase contact area with the bearing and raise mechanical strength.
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Accused Products
Abstract
A thin fan structure is composed of a driving unit and a rotating unit. The driving unit has a base, a coil circuit board and a shaft, in which the coil circuit board is disposed at the base. The rotating unit has a bearing, a fan blade, an iron-containing metal sheet and a magnet, in which the bearing has an outer ring and an inner ring. The fan blade, the iron-containing metal sheet and the magnet are fixed at the outer ring of the bearing, the inner ring of the bearing is fixed at the shaft of the driving unit and the coil circuit board of the driving unit is able to drive the rotating unit turning around.
25 Citations
20 Claims
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1. A thin fan structure comprising:
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a driving unit having a base, a coil circuit board disposed on the base and a fixed shaft; and a rotating unit having a bearing, a fan blade, a magnet and an iron-containing metal sheet, wherein the bearing has an outer ring and an inner ring, the fan blade, the magnet and the iron-containing metal sheet are fixed at the outer ring of the bearing, the inner ring of the bearing is fixed at the shaft of the driving unit and the coil circuit board of the driving unit may drive the rotating unit to turn around, the fan blade having a cavity containing the iron-containing metal sheet and the magnet so as to be effectively integrated and reducing an axial thickness; the fan blade, the magnet and the iron-containing metal sheet each having a surface simultaneously engaging and being in direct contact with the outer ring of the bearing to increase contact area with the bearing and raise mechanical strength. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A thin fan structure comprising:
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a driving unit having a coil circuit board and a fixed shaft; and a rotating unit having a bearing and a rotor, wherein the bearing has an outer ring and an inner ring, the rotor at least has a fan blade and a magnet, the rotor is fixed at the outer ring of the bearing, the inner ring of the bearing is fixed at the shaft of the driving unit and the coil circuit board of the driving unit may drive the rotating unit to turn around, the fan blade having a cavity containing the magnet so as to be effectively integrated and reducing an axial thickness; the fan blade and the magnet each having a surface simultaneously engaging and being in direct contact with the outer ring of the bearing to increase contact area with the bearing and raise mechanical strength. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification