FAN STRUCTURE
A fan structure mainly comprises a fan wheel, a circuit board and a stator. The fan wheel comprising a hub and a plurality of blades is disposed at a fan wheel-disposing area of the circuit board. The fan wheel-disposing area comprises a first disposition area corresponding to the hub and a second disposition area corresponding to the blades. The fan wheel is smaller than the circuit board in size. The stator is disposed at the fan wheel-disposing area, coupled to the fan wheel and electrically connected with a fan-driving circuit of the circuit board.
The present invention is generally relating to a fan structure, more particularly to a thinned fan structure.
BACKGROUND OF THE INVENTIONReferring to
A primary object of the present invention is to provide a fan structure comprising a fan wheel, a circuit board and a stator. The fan wheel has a hub and a plurality of blades. The circuit board has a fan wheel-disposing area, an electronic component-disposing area located outside the fan wheel-disposing area and a fan-driving circuit. The fan wheel disposed at the fan wheel-disposing area comprises a first disposition area corresponding to the hub and a second disposition area corresponding to the blades and is smaller than the circuit board in size. The stator is disposed at the fan wheel-disposing area, coupled to the fan wheel and electrically connected with the fan-driving circuit of the circuit board. Because the fan wheel and the stator are directly disposed on the circuit board with the fan driving-circuit, the base of fan wheel can be omitted to obtain cost-saving and fan wheel structure-thinning benefits.
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While this invention has been particularly illustrated and described in detail with respect to the preferred embodiments thereof, it will be clearly understood by those skilled in the art that is not limited to the specific features shown and described and various modified and changed in form and details may be made without departing from the spirit and scope of this invention.
Claims
1. A fan structure comprising:
- a fan wheel having a hub and a plurality of blades;
- a circuit board having a fan wheel-disposing area, an electronic component-disposing area located outside the fan wheel-disposing area and a fan-driving circuit, wherein the fan wheel is disposed at the fan wheel-disposing area, the fan wheel-disposing area comprises a first disposition area corresponding to the hub and a second disposition area corresponding to the blades, the fan wheel is smaller than the circuit board in size; and
- a stator disposed at the fan wheel-disposing area, coupled to the fan wheel and electrically connected with the fan-driving circuit of the circuit board.
2. The fan structure in accordance with claim 1, wherein the fan-driving circuit comprises at least one fan-driving chip disposed at the electronic component-disposing area.
3. The fan structure in accordance with claim 1, wherein the fan-driving circuit comprises at least one fan-driving chip disposed at the fan wheel-disposing area.
4. The fan structure in accordance with claim 1, further comprising a casing, the circuit board further having a casing-disposing area located outside the fan wheel-disposing area, the casing being coupled to the casing-disposing area of the circuit board.
5. The fan structure in accordance with claim 4, wherein the casing has an insertion portion and the circuit board has a slot, the insertion portion is coupled to the slot.
6. The fan structure in accordance with claim 4, wherein the casing has a clasp portion and the circuit board has a fastening member, the fastening member is coupled to the clasp portion.
7. The fan structure in accordance with claim 4, wherein the casing has a join bore and the circuit board has a fixing bore, the join bore corresponds to the fixing bore and is coupled to the fixing bore by means of a lock member.
8. The fan structure in accordance with claim 1, wherein the fan wheel-disposing area has at least one aeration space.
9. The fan structure in accordance with claim 8, wherein the aeration space is located at the second disposition area.
10. A fan structure comprising:
- a fan wheel having a hub and a plurality of blades;
- a circuit board having a fan wheel-disposing area, an electronic component-disposing area and a fan-driving circuit, wherein the fan wheel is disposed at the fan wheel-disposing area, the fan wheel-disposing area comprises a first disposition area corresponding to the hub and a second disposition area corresponding to the blades, the fan wheel is smaller than the circuit board in size, a central point of the hub is aligned with a central point of the fan wheel-disposing area, wherein there is an interval between the central point of the fan wheel-disposing area and an external edge of the second disposition area, the interval is larger than a radius of the hub; and
- a stator disposed at the fan wheel-disposing area, coupled to the fan wheel and electrically connected with the fan-driving circuit of the circuit board.
11. The fan structure in accordance with claim 10, wherein the fan-driving circuit comprises at least one fan-driving chip disposed at the electronic component-disposing area.
12. The fan structure in accordance with claim 10, wherein the fan-driving circuit comprises at least one fan-driving chip disposed at the fan wheel-disposing area.
13. The fan structure in accordance with claim 10, further comprising a casing, the circuit board further having a casing-disposing area located outside the fan wheel-disposing area, the casing being coupled to the casing-disposing area of the circuit board.
14. The fan structure in accordance with claim 13, wherein the casing has an insertion portion and the circuit board has a slot, the insertion portion is coupled to the slot.
15. The fan structure in accordance with claim 13, wherein the casing has a clasp portion and the circuit board has a fastening member, the fastening member is coupled to the clasp portion.
16. The fan structure in accordance with claim 13, wherein the casing has a join bore and the circuit board has a fixing bore, the join bore corresponds to the fixing bore and is coupled to the fixing bore by means of a lock member.
17. The fan structure in accordance with claim 10, wherein the fan wheel-disposing area has at least one aeration space.
18. The fan structure in accordance with claim 17, wherein the aeration space is located at the second disposition area.
19. A fan structure comprising:
- a fan wheel having a hub and a plurality of blades;
- a circuit board having a fan wheel-disposing area and a fan-driving circuit, wherein the fan wheel is disposed at the fan wheel-disposing area, the fan wheel-disposing area comprises a first disposition area corresponding to the hub and a second disposition area corresponding to the blades, the fan wheel is smaller than the circuit board in size, a central point of the hub is aligned with a central point of the fan wheel-disposing area, wherein there is an interval between the central point of the fan wheel-disposing area and an external edge of the second disposition area, the interval is larger than a radius of the hub; and
- a stator disposed at the fan wheel-disposing area, coupled to the fan wheel and electrically connected with the fan-driving circuit.
Type: Application
Filed: Feb 6, 2009
Publication Date: Aug 12, 2010
Inventors: Yu-Cheng CHEN (Pingtung City), Cheng-Chun Chou (Fengshan City)
Application Number: 12/366,671
International Classification: F28F 13/12 (20060101);