CN2303109Y

CN2303109Y - Heat radiation fan

Info

Publication number: CN2303109Y
Application number: CN 97209774
Authority: CN
Inventors: 陈建荣
Original assignee: Yen Sun Technology Corp
Current assignee: Yen Sun Technology Corp
Priority date: 1997-05-26
Filing date: 1997-05-26
Publication date: 1999-01-06
Anticipated expiration: 2007-05-26

Abstract

The utility model relates to a heat radiation fan. A bottom plate of a base plate is provided with a shaft. A fan wheel is supported by the shaft to be positioned and be rotated. The bottom plate is provided with a control element of a driving circuit. The fan wheel is driven to rotate by the control element of the driving circuit. The base plate is provided with a plurality of electrodes. An insulator is sheathed on the electrode. The outer part of the insulator is wound with a coil. The outer end edge of a blade of the fan wheel is combined with a magnet ring. The magnet ring and the electrode wound with the coil are mutually attracted, repelled and inducted, which leads the fan wheel to rotate.

Description

Heat-dissipating fan

The utility model relates to a kind of heat-dissipating fan.

In the 28206 No. six " the stator combined structure of radiation fan " patent case of the curved bulletin of platform, Fig. 1,2 radiation fans that disclosed utilize the stator coil seat to be bonded to fan base central authorities, establish inductive magnetic ring by impeller (rotor) then, make impeller pivotable drive air flows, has thermolysis, the existing heat-dissipating fan of this kind so cost is comparatively expensive, and can't have thin, less design for fear of stator structure because stator coil comparatively bothers when the winding assembly.

The purpose of this utility model is to provide a kind of heat-dissipating fan, and it can be by manufacturing easily, thus reduce production costs, and can form thin little design.

The purpose of this utility model is achieved in that promptly provides a kind of heat-dissipating fan, and it includes: substrate, establish the axle of supporting the impeller position rotating by base plate, and described base plate is provided with and drives the drive circuit control piece that impeller rotates; Impeller becomes position rotating with bearing hinge joint on the axle of described base plate, described impeller is provided with several blades that drives air flows; The housing of protection impeller, it combines with substrate or is one-body molded; Described substrate internal face is provided with the even number pole, is arranged with insulator on the described pole, and described insulator is wound with coil outward, and the coil of corresponding utmost point position is same wiring, and described wiring is fixed on described substrate inwall; The approach end limit, blade outer end or the outer end side surface of described impeller are provided with magnet ring.

The advantage of the utility model device is, and is simple in structure, compact, convenient processing and manufacture, and cost is low.

Below in conjunction with accompanying drawing, embodiment of the present utility model is described, wherein:

Fig. 1 is an exploded perspective view of the present utility model;

Fig. 2 is a combination top view of the present utility model;

Fig. 3 is the sectional drawing of 3-3 line among Fig. 2.

See also a preferred embodiment of the present utility model shown in Figure 1, it includes substrate 1, impeller 2, housing 3.

This substrate 1 can be made by plastics or metal material, usually make with plastics, lower cost is arranged, it is provided with base plate 11, be provided with several steady arms that is connected 12 between this base plate 11 and periphery, this steady arm 12 can be used as the drawing groove of power line, this base plate 11 is provided with drive circuit control piece 13, these base plate 11 central authorities are provided with one 14, this 14 can be inserted for the bearing 21 of impeller 2, to support 2 one-tenth position rotating of impeller, this substrate 1 is provided with several poles 15, can be silicon steel sheet etc., the number of this pole 15 needs according to number of poles and designs, can be four, six, eight even numbers such as grade, and become the distribution setting at diagonal angle, this pole 15 can be embedded in the one ejection formation when substrate 1 moulding, be provided with four poles 15 in the present embodiment, be dispensed on four interior corner positions of substrate 1, so, the space that can make substrate 1 is by the most effective utilization, and make the blade 22 of impeller 2 can form bigger design, be equipped with insulator 16 on this pole 15, it can be the cover that materials such as plastics are made, winding around 17 outside insulator 16, because coiling is sheathed again separately with coil 17 for insulator 16, thus in manufacturing facility comparatively, and can reduce manufacture cost, the coil 17 of corresponding position forms a wiring 18, for preventing wiring 18 between the coil 17 by blade 22 snarls of impeller 2, wiring 18 can be fixed on the wall of substrate 1, in the present embodiment by various fixation methods, establish several affixed bodies 19 by the internal face of substrate 1, wiring 18 is fixed as hook.

This impeller 2 is limited in 14 one-tenth position rotating of axle of substrate 1 by clasp 24 with an intermediate bearing 21, impeller 2 itself is provided with less hub, and can become several blades 22 that is provided with of radiation-like by hub, the outer end edges of blade 22 can be in conjunction with magnet ring 23, this magnet ring 23 can be ferro-gum etc., make with bonding mode or by the one injection molding method between itself and the blade 22, this magnet ring 23 can be inhaled each other with the pole 15 that is wound with coil 17 and scold induction, and just impeller 2 can be driven in rotation.

This housing 3 can with substrate 1 between combine with various existing methods, in fact, housing 3 also can directly be formed by substrate 1, in order to the impeller 2 of protection rotation.

See also shown in Fig. 2,3, the utility model utilizes the rotating axle 14 that snaps onto substrate 1 of 21 one-tenth on the bearing of impeller 2, and magnet ring 23 is inhaled each other with the pole 15 that is wound with coil 17 scold induction, therefore, after coil 17 is connected with the mains, can rotate by drive circuit control piece 13 control impellers 2.

Inductor coil 17 of the present utility model is set on the substrate 1 with pole 15, and the inductive magnetic ring 23 of impeller 2 is located at blade 22 outer ends, so, it is more convenient that the coiling of coil 17 can become, and impeller thickness can attenuation, especially when coil 17 and pole 15 are arranged on four corner positions of substrate 1, whole base plate 1 can be fully utilized with the space of housing 3, simultaneously, and under the situation of the size constancy of housing 3, the length of the blade 22 of impeller 2 can be increased, so, can obtain more wind dispelling amount, or under the constant situation of wind dispelling amount, can make the size decreases of housing 3, form thin, little design.

Claims

1. heat-dissipating fan, it includes: substrate, establish the axle of supporting the impeller position rotating by base plate, described base plate is provided with and drives the drive circuit control piece that impeller rotates; Impeller becomes position rotating with bearing hinge joint on the axle of described base plate, described impeller is provided with several blades that drives air flows; The housing of protection impeller, it combines with substrate or is one-body molded, it is characterized in that, described substrate internal face is provided with the even number pole, is arranged with insulator on the described pole, and described insulator is wound with coil outward, the coil of corresponding utmost point position is same wiring, and described wiring is fixed on described substrate inwall; The approach end limit, blade outer end or the outer end side surface of described impeller are provided with magnet ring.

2. according to the described heat-dissipating fan of claim 1, it is characterized in that described pole and described substrate are one-body molded, or are together with each other.

3. according to the described heat-dissipating fan of claim 1, it is characterized in that described pole is four, and be arranged on four interior corner positions of described base plate and described housing.

4. according to the described heat-dissipating fan of claim 1, it is characterized in that described base plate is provided with the affixed body that described wiring is affixed.

5. according to the described heat-dissipating fan of claim 4, it is characterized in that described affixed body is a hook.