CN1301371C - Pivot joint for fan wheel of super-thin small heat-dissipating fan - Google Patents
Pivot joint for fan wheel of super-thin small heat-dissipating fan Download PDFInfo
- Publication number
- CN1301371C CN1301371C CNB991219503A CN99121950A CN1301371C CN 1301371 C CN1301371 C CN 1301371C CN B991219503 A CNB991219503 A CN B991219503A CN 99121950 A CN99121950 A CN 99121950A CN 1301371 C CN1301371 C CN 1301371C
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- China
- Prior art keywords
- stationary axle
- impeller
- support
- shell block
- supporting
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Abstract
The present invention relates to a fan wheel for a heat radiation fan, which is provided with a circuit board, a stator coil and an axis cylinder in a casing seat, wherein an axis is arranged on the axis cylinder, the terminal of the axis forms a conical support part, and a balanced piece is also arranged in the casing seat; the central position of the fan wheel is provided with a support seat fixedly connected with a support piece, the support piece forms a top connection with the support part of the axis of the casing seat, and the fan wheel provided with a ring magnet is corresponding to the stator coil and the balanced piece of the casing seat. Therefore, the present invention has the advantages of low noise, prolonged service life and reduced production cost.
Description
Technical field
The present invention relates to a kind of impeller of heat-dissipating fan.
Background technique
At present, the TaiWan, China patent gazette is announced " improvement of brushless DC fan bearing lubrication structure " patent case No. 355037, be provided with pivoted hole by containing the lubricant oil bearing, make the axle center rotation, bearing is provided with an oil storage tank in the centre of pivoted hole, to form the Bao You district, the pin joint seat mesopore of blower-casting is provided with several grooves, to form the storage area of oil supply system.Between this bearing and axle center bigger pivot joint face is arranged,, after long-term the use, easily form noise and it makes trouble, bigger cost is arranged so the rubbing surface of the two also just increases.
In 97211032.1 patent of invention, a kind of axial flow fan bearing device is disclosed, this bearing device comprises substrate, impeller and housing, also be provided with control piece on the base plate of substrate, make the impeller can be by coil-induced rotation, coil is installed in the housing, and with its in the magnet ring induction of all impeller blade edges, the impeller central shaft forms the apical grafting end that symmetry is convexly equipped with vertically, two apical grafting ends are shored mutually for taper shape and with housing center arc recess, have less friction area in the time of can making the impeller rotation like this, can reduce number of bearings, reduce frictional heat.
Summary of the invention
The purpose of this invention is to provide a kind of super-thin small heat-dissipating fan with supporting structure, it is between supporting with axle and supporting axis minimum area of contact to be arranged so that the Rotation Noise of impeller reduces and increase working life, and impeller assemble also easy.
The object of the present invention is achieved like this: a kind of super-thin small heat-dissipating fan with supporting structure, include a shell block and an impeller, be provided with circuit board in the shell block, a stator coil seat and a jack-post, convex with stationary axle on this jack-post, this stationary axle terminal forms coniform support, also be provided with a balancing patch of making by permeability magnetic material in the shell block, the central position of the cavity at impeller middle part is provided with a stacker, this stacker is connected with supporting, this supporting is shored mutually with the stationary axle support in the shell block, the impeller middle pocket be provided with stator coil seat and shell block in the corresponding ring magnet of balancing patch, described supporting inside is provided with the holding space that supplies stationary axle and support thereof to stretch into, the inwall of described holding space is provided with a circular groove of ccontaining packing ring, the inner ring surface of this packing ring protrudes from inwall, and the diameter of bore of this packing ring is greater than the diameter that passes its stationary axle.
Super-thin small heat-dissipating fan with supporting structure provided by the present invention, described packing ring is nested with at interval with the reduced diameter section that passes the stationary axle of its endoporus, and the terminal of stationary axle is provided with enlarged diameter section and support greater than the packing ring diameter of bore.
Description of drawings
Fig. 1 first embodiment of the invention sectional drawing.
2 partial enlarged drawings of Fig. 2 first embodiment of the invention Fig. 1.
The partial schematic diagram of Fig. 3 second embodiment of the invention.
The partial schematic diagram of Fig. 4 third embodiment of the invention.
The partial schematic diagram of Fig. 5 fourth embodiment of the invention.
The partial schematic diagram of Fig. 6 fifth embodiment of the invention.
Among the figure: 1 shell block, 11 circuit boards, 12 stator coil seats, 13 jack-posts, 14 stationary axle, 141 supports, 15 balancing patches, 16 cover plates, 161 through holes, 17 stationary axle, 171 supports, 172 end edge, 18 stationary axle, 181 shrinkage pools, 182 spheroids, 19 supportings, 191 holding spaces, 2 impellers, 21 ring magnets, 22 blades, 23 stackers, 24 supportings, 25 holding spaces, 26 circular grooves, 27 packing rings, 28 stationary axle, 281 supports.
Embodiment
Below in conjunction with drawings and Examples concrete structure of the present invention is described further.
As shown in Figure 1, 2, first embodiment is made of shell block 1 and impeller 2, wherein:
Shell block 1 is combined with circuit board 11 and line of position ring support 12 with jack-post 13, this jack-post 13 convexes with a stationary axle 14, supporting impeller 2 by this stationary axle 14, for 2 of stationary axle 14 and impellers are had than friction, stationary axle 14 end limits form the support 141 than minor diameter, this support 141 can form shoring mutually with impeller 2 interior supportings 24 of taper, to form less friction area the best; Be provided with a balancing patch 15 in the shell block 1, this balancing patch 15 is made by magnetic conductive material, as shown in Figure 1, 2, balancing patch 15 is above circuit board 11, balancing patch 15 can be made into integration with circuit board 11 in case of necessity, and the rough ring magnet 21 that equals impeller 2 of its diameter, balancing patch 15 are positioned at the below near ring magnet 21, make ring magnet 21 and balancing patch 15 be discontiguous and correspondingly inhale mutually; In addition above shell block 1, fixed with a cover plate 16, this cover plate 16 can be fixed on shell block 1 and this cover plate 16 with various fixation methods and be provided with the circulation of through hole 161 air feed stream, and through hole 161 diameters are less than the maximum diameter of impeller 2, therefore, cover plate 16 can deviating from order to restriction impeller 2.
The ring magnet 21 that impeller 2 is provided with forms with stator coil seat 12 and interacts, this impeller 2 has blade 22 can be as the driving of air-flow, the central position of this impeller middle pocket is provided with a stacker 23, insert a supporting 24 in the stacker 23, this supporting 24 can be made for bearing or antifriction material, and it more can be provided with suitable holding space 25, confession stationary axle 14 stretches into and the support 141 of the axle 14 that is fixed is shored mutually, friction area with the minimum that forms 24 of stationary axle 14 and supportings, as shown in Figure 3, second embodiment, form the inwall of holding space 25 at supporting 24, be provided with a circular groove 26, be equipped with packing ring 27 in this circular groove 26, this packing ring 27 can be made by materials such as rubber, and protrude from the internal face of the holding space that forms 25, packing ring 27 internal diameters are slightly larger than stationary axle 14 diameters, therefore, 2 pairs of stationary axle 14 of impeller have only less deflection, the ring magnet 21 that forms impeller 2 can not touch stator coil seat 12, when impeller 2 stable rotations, 14 of packing ring 27 and stationary axle no longer exist contact friction.
As shown in Figure 4, the 3rd embodiment, holding space 25 positions that form at supporting 24 are provided with circular groove 26, have inserted packing ring 27 in this circular groove 26, and the internal face that the place forms holding space 25 be made and be protruded to this packing ring 27 can by materials such as rubber; In addition, position, stationary axle 17 near-end limit then forms than major diameter, end edge 172 to form a ring, end face at stationary axle 17 forms cone shape support 171 in addition, this support 171 is shored mutually with supporting 24, make the two that preferable minimized friction area be arranged, packing ring 27 slightly larger in diameter are in stationary axle 17 diameters, therefore, 2 pairs of stationary axle 17 of impeller have only less deflection, so that the ring magnet 21 on the impeller 2 can not touch stator coil seat 12, when impeller 2 stable rotations, packing ring 27 has promptly no longer contacted friction with stationary axle 17, and in addition, it is to prevent that impeller 2 from deviating from that this stationary axle 17 is provided with the effect that ends edge 172.
As shown in Figure 5, the 4th embodiment, be provided with a stationary axle 18 at jack-post 13, these stationary axle 18 tops are provided with shrinkage pool 181 and hold to go into the spheroid 182 that a wear-resistant material is made, and are formed stationary axle 18 and are formed the support that contacts with supporting 24 by this spheroid 182, and 24 of supportings are arranged in the stacker 23, this supporting 24 is made by high-abrasive material, and be formed with holding space 25, confession stationary axle 18 stretches into and by spheroid 182 apical graftings, makes the two that preferable minimized friction area be arranged.
As shown in Figure 6, the 5th embodiment, be provided with a supporting 19 at jack-post 13, this supporting 19 can be made etc. for bearing or antifriction material, supporting 19 more can form holding space 191, stretch into and support 281 apical graftings of the axle 28 that is fixed for impeller 2 set stationary axle 28, to form minimum friction area.
As shown in Figure 1, the rotation of 2 pairs of shell blocks 1 of impeller, by stationary axle and supporting contacting with minimized friction, also can say it almost is that mode with a contact supports the impeller rotation, and the balancing patch 15 that the magnetic conductive material that shell block is provided with is made, effect is impeller 2 to be produced with ring magnet 21 and balancing patch 15 correspondingly inhale mutually, so, impeller 2 can form the rotation of location and balance, and therefore, impeller can have minimum friction when rotating, after impeller 2 is combined in shell block 1 again, therefore the top, can not deviate from handling process by a cover plate 16 restrictions yet.
In sum, the impeller of of the present invention some supporting structure can obtain minimum friction, so heat-dissipating fan can prolong working life and Rotation Noise also can reduce.
Claims (2)
1, a kind of super-thin small heat-dissipating fan with supporting structure, include a shell block and an impeller, be provided with circuit board in the shell block, a stator coil seat and a jack-post, convex with stationary axle on this jack-post, this stationary axle terminal forms coniform support, it is characterized in that: also be provided with a balancing patch of making by permeability magnetic material in the shell block, the central position of the cavity at impeller middle part is provided with a stacker, this stacker is connected with supporting, this supporting is shored mutually with the stationary axle support in the shell block, the impeller middle pocket be provided with stator coil seat and shell block in the corresponding ring magnet of balancing patch, described supporting inside is provided with the holding space that supplies stationary axle and support thereof to stretch into, the inwall of described holding space is provided with a circular groove of ccontaining packing ring, the inner ring surface of this packing ring protrudes from inwall, and the diameter of bore of this packing ring is greater than the diameter that passes its stationary axle.
2, by the described super-thin small heat-dissipating fan of claim 1 with supporting structure, it is characterized in that: described packing ring is nested with at interval with the reduced diameter section that passes the stationary axle of its endoporus, and the terminal of stationary axle is provided with enlarged diameter section and support greater than the packing ring diameter of bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991219503A CN1301371C (en) | 1999-10-18 | 1999-10-18 | Pivot joint for fan wheel of super-thin small heat-dissipating fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991219503A CN1301371C (en) | 1999-10-18 | 1999-10-18 | Pivot joint for fan wheel of super-thin small heat-dissipating fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1293309A CN1293309A (en) | 2001-05-02 |
| CN1301371C true CN1301371C (en) | 2007-02-21 |
Family
ID=5282212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991219503A Expired - Fee Related CN1301371C (en) | 1999-10-18 | 1999-10-18 | Pivot joint for fan wheel of super-thin small heat-dissipating fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1301371C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4935051B2 (en) * | 2005-11-01 | 2012-05-23 | 日本電産株式会社 | Centrifugal fan |
| WO2017181421A1 (en) * | 2016-04-22 | 2017-10-26 | 汪普军 | Computer water cooling pump |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2303114Y (en) * | 1997-05-26 | 1999-01-06 | 元山科技工业股份有限公司 | Device for supporting rotator central shaft of heat radiation fan |
| CN2303113Y (en) * | 1997-05-26 | 1999-01-06 | 元山科技工业股份有限公司 | Shaft bearing device of axial fan |
-
1999
- 1999-10-18 CN CNB991219503A patent/CN1301371C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2303114Y (en) * | 1997-05-26 | 1999-01-06 | 元山科技工业股份有限公司 | Device for supporting rotator central shaft of heat radiation fan |
| CN2303113Y (en) * | 1997-05-26 | 1999-01-06 | 元山科技工业股份有限公司 | Shaft bearing device of axial fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1293309A (en) | 2001-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070221 Termination date: 20111018 |