Bearing structure and fan thereof
AssigneeAsia Vital Components Co., Ltd.
InventorsFeng Liu, Changli Tang
Life of this patent
Estimating the term…
Abstract
A bearing structure and a fan thereof. The fan has a fan impeller and a rotary shaft connected with the fan impeller. The rotary shaft has a free end inserted in the bearing structure. The bearing structure includes a bearing cup. A bearing member and a first magnetic member are received in the bearing cup. The first magnetic member has a first magnetic face radially facing the rotary shaft. By means of the bearing member and the first magnetic member, the fan impeller can keep stably operating.
Claims18
A bearing structure in which a rotary shaft is inserted, the rotary shaft having a free end, the bearing structure comprising:
- a bearing cup having a first receiving space and a second receiving space and an inner flange section positioned between the first and second receiving spaces, the first and second receiving spaces being vertically formed in the bearing cup, the inner flange section horizontally protruding from an inner wall of the bearing cup toward a center thereof;
- a bearing member disposed in the first receiving space of the bearing cup, the bearing member having a shaft hole, the free end of the rotary shaft passing through the shaft hole;
- and
- a first magnetic member annularly disposed in the second receiving space of the bearing cup, the first magnetic member having a first perforation, the free end of the rotary shaft passing through the first perforation, inner circumference of the first perforation being defined as a first magnetic face radially facing the rotary shaft, the first magnetic member having a bottom side, the bottom side being defined as a second magnetic face.
A fan comprising:
- a base seat;
- a fan impeller having a hub and multiple blades formed on outer circumference of the hub, a rotor assembly being annularly disposed on inner circumference of the hub, a rotary shaft having a fixed end and a free end, the fixed end being connected with a top section of the hub;
- a bearing structure including a bearing cup, a bearing member and a first magnetic member, the bearing cup being formed on the base seat, the bearing cup having a first receiving space and a second receiving space and an inner flange section positioned between the first and second receiving spaces, the first and second receiving spaces being vertically formed in the bearing cup, the inner flange section horizontally protruding from an inner wall of the bearing cup toward a center thereof, the bearing member being disposed in the first receiving space of the bearing cup, the bearing member having a shaft hole, the free end of the rotary shaft passing through the shaft hole, the first magnetic member being annularly disposed in the second receiving space of the bearing cup, the first magnetic member having a first perforation, the free end of the rotary shaft passing through the first perforation, inner circumference of the first perforation being defined as a first magnetic face radially facing the rotary shaft, the first magnetic member having a bottom side, the bottom side being defined as a second magnetic face;
- and
- a stator assembly disposed on the base seat and fitted around the bearing cup corresponding to the rotor assembly for driving the fan impeller to rotate.
Dependencies are inferred from the claim text.