CN104454586B - Magnetic suspension fan used for notebook computer - Google Patents
Magnetic suspension fan used for notebook computer Download PDFInfo
- Publication number
- CN104454586B CN104454586B CN201410610514.9A CN201410610514A CN104454586B CN 104454586 B CN104454586 B CN 104454586B CN 201410610514 A CN201410610514 A CN 201410610514A CN 104454586 B CN104454586 B CN 104454586B
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- Prior art keywords
- magnetic suspension
- rotor assembly
- magnet
- sleeve
- centering
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/203—Cooling means for portable computers, e.g. for laptops
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Computer Hardware Design (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a magnetic suspension fan used for a notebook computer. The magnetic suspension fan used for the notebook computer comprises a lower shell, a stator assembly, a rotor assembly and an upper shell, and further comprises a first magnetic suspension magnet, a second magnetic suspension magnet and a centering and limiting device. The first magnetic suspension magnet is installed on the rotor assembly and used for realizing magnetic suspension of the rotor assembly. The second magnetic suspension magnet is fixed to the bottom of the lower shell and is opposite to the first magnetic suspension magnet. The centering and limiting device is installed on the upper shell and used for centering and limiting the rotator assembly in the magnetic suspension state. Through the same repellence of the first magnetic suspension magnet and the second magnetic suspension magnet, the rotor assembly is made to suspend and rotate relative to the stator assembly in a magnetic mode. The centering and limiting device centers and limits the rotor assembly in the magnetic suspension state, so that the rotor assembly in the magnetic suspension state is prevented from interfering with the stator assembly. The magnetic suspension fan used for the notebook computer is simple in structure, the manufacturing cost is reduced, the manufacturing difficulty is lowered, noise generated in the rotation process of the fan is reduced, the working stability and reliability of the product are improved, and maintenance or replacement is facilitated.
Description
Technical field
The present invention relates to notebook computer technical field, more particularly, to a kind of maglev fan for notebook computer.
Background technology
In notebook computer industry, generally based on centrifugal fan, it is realized the fan of use by central rotating shaft
The rotation of fan, and should be exactly a tiny rotating shaft (diameter occuping its center from one of core technology of wind formula fan
For 0.8mm-1.0mm), the pact in three direction degree of freedom of x, y, z and x, y rotary freedom for the electric fan is realized by rotating shaft
Bundle.
Because above-mentioned rotating shaft has following requirement in terms of manufacture and assembly: 1, the surface roughness of rotating shaft is low, at least
Reach ra0.2；2nd, the circularity of rotating shaft is high；3rd, the surface abrasion resistance of rotating shaft is high；4th, the assembly precision installed during rotating shaft is high, therefore,
Once rotating shaft have above some do not reach requirement, will result in fan and abnormal sound, flabellum rotation occur in the course of the work partially
The problems such as heart, wind make an uproar big, and the cost of each fan producer manufacture rotating shaft is very high with respect to whole fan cost proportion, greatly
About 10%.
Secondly, in notebook computer industry, back pressure at the central rotating shaft of fan, is had to test, but due to notebook computer
The design feature of industry, centrifugal fan needs to empty in rotating shaft position to make fresh air inlet, and this results in fan bulk strength and subtracts
Weak, often arise that when back pressure is tested that extruding rotating shaft produces the problem of abnormal sound.
As can be seen here, the fan of said structure exist that rotating shaft manufacture difficulty is big, assembly precision has high demands, non-modularity not
Easily do over again, rotating shaft is easy to wear, manufacturing cost is high shortcoming.
And prior art is worn and torn to solve the problems, such as rotating shaft, also frequently with shaftless fan, as shown in figure 21, this shaftless wind
Fan couples, with stator 30, the rotation to realize fan by rotor 50 in fan outer ring, but it can only realize the air intake in z direction
And air-out, it is not suitable for the structure of current notebook computer.
Content of the invention
The purpose of the present invention is exactly to solve the above problems, and provides a kind of maglev fan for notebook computer,
Its structure is simple, the rotating shaft in conventional fan structure is become the cylindrical central sleeve of easily fabricated processing and size management and control, reduces system
Cause this and difficulty, using magnetic levitation technology, make rotor assembly relative stator assembly be in suspended state, reduce fan and rotate through
The noise occurring in journey, the abrasion of the rotating shaft in traditional structure is converted into the abrasion of bearing, improves the job stability of product
With reliability, and be easy to keep in repair or change.
For realizing the above-mentioned purpose of the present invention, the maglev fan for notebook computer of the present invention, comprising: lower casing
Body, the stator module being arranged in lower casing body and stator module coordinate and have the rotor assembly of flabellum and lower house top connects
The upper shell connecing, additionally, also include: be arranged on being used on described rotor assembly and realize maglev first magnetcisuspension of rotor assembly
Floating Magnet；It is fixed on lower house bottom the second magnetic suspension Magnet relative with described first magnetic suspension Magnet；It is arranged on described
The centering stopping means for centering and the spacing rotor assembly being in magnetic suspension state on upper shell；Wherein, by described
The same sex of the first magnetic suspension Magnet and the second magnetic suspension Magnet is repelled each other, and makes described rotor assembly with respect to stator module magnetic suspension,
And rotate under described stator module magneticaction；Wherein, described centering stopping means are by fixed to maglev rotor assembly
The heart and spacing, makes the rotor assembly being in magnetic suspension state avoid interfering with stator module.
Wherein, described rotor assembly includes: the columnar flabellum skeleton in bottom end opening；It is fixedly connected with flabellum skeleton
And it is fed through the sleeve at its center；Wherein, described first magnetic suspension Magnet is arranged on the bottom of described sleeve；Wherein, described fan
Leaf joint is located at the outer wall of described flabellum skeleton.
Wherein, described centering stopping means include: be arranged on described upper shell center for limiting described rotor assembly
The bearing base of axial location；It is arranged on the bearing in bearing base；It is arranged in described bearing base and pass through the axle of bearing
The centering member of bearing bore；Wherein, the top of described sleeve is connected with described centering member.
Preferably, described sleeve is the cylinder of its both ends open；Described centering member is to be arranged on described bearing base center
And the centration axis extending downwardly；Wherein, the top of described sleeve is placed between described bearing and described centration axis, will pass through
The same sex of described first magnetic suspension Magnet and the second magnetic suspension Magnet is repelled each other, and makes described sleeve top be against described bearing base
Above, the outer wall of sleeve and described bearing touch.
Or, described sleeve includes: the cylinder of its bottom end opening, is arranged on the molding fastening teeth of cylinder top, is arranged on
Molding fastens the cone cylinder of tooth tip, the stopper slot being evenly distributed on the barrel being opened in cone cylinder；Described centering member is fixed for sleeve
Position card, comprising: the spacing barricade that the tapered cylinder of inwall is connected with cylinder inner wall；Wherein, described in described cone cylinder is inserted in
In cylinder, and described stopper slot and described spacing barricade clamping.
Further, described rotor assembly also includes: is arranged on the Magnet on described flabellum inboard wall of skeleton；Wherein, described
Magnet is ferro-gum, and ferro-gum is cylindrical.
Wherein, described first magnetic suspension Magnet and the second magnetic suspension Magnet are permanent magnet or electric magnet.
Wherein, described lower house includes: shell holder, including base plate be centered around bottom edge and the side vertical with base plate
Plate；The housing being arranged on the side plate outer rim of shell holder moulds bone；It is arranged on the base plate of shell holder and has and base plate insertion
Through hole stop collar；It is arranged on the rib for limiting described stator module position of stop collar outer wall.
Wherein, described lower house bottom centre is provided with the columnar end cap in top end opening, described second magnetic suspension
Magnet is arranged in described end cap, and extend in the cavity that described lower house stop collar surrounds.
The present invention also provides one kind to realize the maglev method of notebook computer fan, described notebook computer fan bag
Include: lower house, the stator module being arranged in lower casing body and stator module coordinate and have rotor assembly and the lower casing of flabellum
The upper shell that body top connects, wherein, methods described includes:
Described rotor assembly is installed and is used for realizing the maglev first magnetic suspension Magnet of rotor assembly；
The second relative magnetic suspension Magnet of described first magnetic suspension Magnet is fixed on lower house bottom；
The spacing dress of centering for centering and the spacing rotor assembly being in magnetic suspension state is installed on described upper shell
Put；
Wherein, repelled each other by the same sex of described first magnetic suspension Magnet and the second magnetic suspension Magnet, make described rotor assembly
With respect to stator module magnetic suspension, and rotate under described stator module magneticaction；
Wherein, described centering stopping means, by feeling relieved and spacing to maglev rotor assembly, make to be in magnetic suspension shape
The rotor assembly of state avoids interfering with stator module.
Compared with prior art, the maglev fan for notebook computer of the present invention has the advantage that
1) maglev fan of the present invention has the first magnetic suspension Magnet and the second magnetic suspension Magnet, in a pair of magnet same sex
In the presence of repelling each other, rotor assembly relative stator assembly is made to be in magnetic suspension state, such that it is able to avoid rotor assembly and stator
Produce friction because of interference between assembly, make that maglev fan is operationally easy to wear, heating less, noise is little, vibration is little, make
Increased with the life-span；
2) maglev fan of the present invention has centering stopping means so that relative stator assembly is in magnetic suspension state
When rotated, the sleeve of rotor assembly will not arbitrarily contact stop collar inwall to rotor assembly, and the sky that only can surround in stop collar
Intracavity rotates, thus reducing friction between the two, reduces abnormal sound；
3) each component of the maglev fan of the present invention is all using modularized design, easy to assembly, is easy to keep in repair or changes；
4) the centering limit device structure of the present invention is simple, facilitates implementation, and the rotor set being connected with centering stopping means
The sleeve of part is easy to process, and manufacture difficulty is little, low production cost；
5) metalwork of the present invention and plastic parts are all connected as one by the way of insert injection molding, therefore, pass through
Guarantee that the precision of injection forming mold ensures that the precision of the component that metalwork and plastic parts are connected to one, thus really
Protect the overall assembly precision of fan, improve fan work reliability and stationarity, greatly reduce the manufacturing cost of fan.
The present invention is described in detail below in conjunction with the accompanying drawings.
Brief description
Fig. 1 is the installation diagram of the maglev fan that the present invention is used for notebook computer；
Fig. 2 is the assembling schematic diagram of the first embodiment of the maglev fan that the present invention is used for notebook computer；
Fig. 3 is the perspective view of the rotor assembly of first embodiment of the invention；
Fig. 4 is the sectional view of the rotor assembly of first embodiment of the invention；
Fig. 5 is the perspective view of the stator module of the present invention；
Fig. 6 is the sectional view of stator module of the present invention；
Fig. 7 is the perspective view of lower house of the present invention；
Fig. 8 is a magnified partial view shown in Fig. 7；
Fig. 9 is the sectional view of lower house of the present invention；
Figure 10 is the sectional view of end cap of the present invention；
Figure 11 is the structural representation of the upper shell of first embodiment of the invention；
Figure 12 is b magnified partial view shown in Figure 11；
Figure 13 is the assembling schematic diagram of the second embodiment of the maglev fan of the present invention；
Figure 14 is the perspective view of the rotor assembly of second embodiment of the invention；
Figure 15 is the sectional view of the rotor assembly of second embodiment of the invention；
Figure 16 is the structural representation of the sleeve of second embodiment of the invention；
Figure 17 is the perspective view of the upper shell of second embodiment of the invention；
Figure 18 is the sectional view of the upper shell of second embodiment of the invention；
Figure 19 is c magnified partial view shown in Figure 18；
Figure 20 is the structural representation of the centering member of second embodiment of the invention；
Figure 21 is the structural representation of the shaftless fan of prior art.
Specific embodiment
As shown in Figure 1, Figure 2, shown in Figure 13, respectively the maglev fan for notebook computer of the present invention the first knot
Structure and the structural representation of second structure, as seen from the figure, the maglev fan of the present invention includes: includes: lower house 2, installation
Stator module 3 in lower casing body and stator module coordinate and have the rotor assembly 4 of flabellum and lower house top is connected
Upper shell 5, additionally, also include: be arranged on being used on rotor assembly 4 and realize the maglev first magnetic suspension Magnet of rotor assembly
44；Be fixed on lower house bottom the second magnetic suspension Magnet 11 relative with the first magnetic suspension Magnet, the first magnetic suspension Magnet and
The magnetic pole of the second magnetic suspension Magnet opposite end is identical；Be arranged on upper shell 5 for centering and spacing be in magnetic suspension shape
The centering stopping means of the rotor assembly of state；Wherein, repelled each other by the same sex of the first magnetic suspension Magnet and the second magnetic suspension Magnet,
Make rotor assembly 4 with respect to stator module 3 magnetic suspension, and rotate under stator module 3 magneticaction；Wherein, the spacing dress of centering
Put by feeling relieved and spacing to maglev rotor assembly 4, so that the rotor assembly 4 being in magnetic suspension state is avoided and stator module
Interfere, so that the flabellum of rotor assembly can rotate smoothly.
The maglev fan of the present invention, the repulsion repelling each other in the same sex of the first magnetic suspension Magnet and the second magnetic suspension Magnet is made
Under firmly, make rotor assembly 4 with respect to stator module 3 be in magnetic suspension state (i.e. rotor assembly with respect to stator module in z side
To being in vacant state), and, the centering in centering stopping means and spacing in the presence of, make the flabellum of rotor assembly 4 permissible
When rotating in the space that lower house is constituted with upper shell, and rotating, rotor assembly will not interfere with stator module, with true
Protect flabellum smoothly to rotate.Therefore, the maglev fan of the present invention, for the centrifugal fan of prior art, decreases and turns
Friction between sub-component and stator module, so that maglev fan is not easy to wear, generate heat less, noise is little, vibration is little, use
Life-span increases.
Specifically, as shown in Figure 3, Figure 4, the rotor assembly 4 of the present invention includes: the columnar flabellum bone in bottom end opening
Frame 41；It is fixedly connected and is fed through the sleeve 42 at its center with flabellum skeleton；Wherein, the first magnetic suspension Magnet 44 is arranged on sleeve
Bottom, and relative with the second magnetic suspension Magnet, by the effect of the first magnetic suspension Magnet and the second magnetic suspension Magnet repulsive force,
Whole rotor assembly is made to be in maglev state with respect to stator module；Wherein, flabellum 43 ring being made up of multiple blades sets
Be connected to one in the outer wall of flabellum skeleton 41 and with flabellum skeleton.During fabrication, flabellum and flabellum skeleton can adopt
Integrally formed mode connects as one it is preferred that flabellum and flabellum skeleton adopt integrally formed plastic parts, and sleeve adopts
Iron material is made, and sleeve and flabellum skeleton are connected to one by way of insert injection molding, the first magnetic suspension Magnet
44 press in the inwall of sleeve bottom end.
Additionally, rotor assembly also includes the Magnet 45 being arranged on flabellum skeleton 41 inwall (as Fig. 4, Figure 14, Tu15Suo
Show) it is preferred that Magnet is ferro-gum, and ferro-gum is cylindrical, the ferro-gum of the present invention can be by magnetic powder, poly- second
The composition such as alkene and other additive, and be fabricated by by extrusion, calendering, therefore the course of processing is simple, can be by required size
Finishing shape.
For the ease of being arranged on Magnet on the inwall of flabellum skeleton, between Magnet and flabellum skeleton, it is additionally provided with Magnet
Support 46, wherein, magnet holder is the cylinder of both ends open, its outer ring press into flabellum skeleton inwall, and ferro-gum
Press the inwall into magnet holder, when ferro-gum is in respect to stator module in the presence of stator module AC magnetism field force
Magnetic suspension state when rotating, can drive whole rotor assembly rotation, and by the rotor set to rotation for the stopping means of feeling relieved
Part plays centering and position-limiting action.
Wherein, the centering stopping means of the present invention include: be arranged on upper shell 5 case support 51 center for limiting
The bearing base 52 of rotor assembly axial location, this bearing base is plastic parts, and case support 51 is ironware, and the two adopts inserts
The mode of injection mo(u)lding is connected to one；It is arranged on the bearing 53 in bearing base 52；Be arranged in bearing base 52 and
Surround the centering member in space through bearing 53；Wherein, the top of sleeve 42 is connected with centering member, and centering member and bearing are jointly right
Sleeve plays certralizing ability.By stopping means of feeling relieved, can avoid being in the rotor assembly relative stator assembly of magnetic suspension state
During rotation, rotor assembly and stator module be the occurrence of interfere.Preferably, set between bearing base 52 and bearing 53
Put the oil sealing 54 for oil sealing, to avoid the lubricating oil leakage (as shown in Figure 11,12,18,19) for lubricating bearing.
Wherein, the centering member of the present invention can be using different structures, and accordingly, the sleeve being connected with centering member is also adopted by
Different structures, is introduced in detail below.
The sleeve 42 of the present invention can be using the first structure as shown in Figure 3, Figure 4, as seen from the figure, and sleeve is its two ends
The cylinder of opening, the bottom of cylinder is fitted together to the first magnetic suspension Magnet 44, and the top of cylinder is connected with centering member.
In order to be connected with the sleeve shown in Fig. 3, Fig. 4, as shown in Figure 11, Figure 12, the centering member that is connected with cylinder top
For being arranged on bearing base 52 center and the centration axis 55 extending downwardly, this centration axis and bearing base are connected to one,
Preferably, centration axis are made into integration using with bearing base identical material；Wherein, the top of sleeve 42 is set in centration axis
Outward, and be located between bearing and centration axis it is preferred that sleeve and centration axis, bearing inner race are gap cooperation.By the first magnetic
The same sex of suspension magnet and the second magnetic suspension Magnet is repelled each other, and a part for sleeve bottom is suspended in the sky that lower house stop collar surrounds
Intracavity, the top of sleeve is gently against on the inwall of bearing base so that bearing base plays the effect of axial limiting to sleeve；And
The outer wall of sleeve is gently contacted with bearing, and when rotor assembly rotates, sleeve can rotate round centration axis, so that centering
Axle, bearing play the effect to rotor assembly centering.
And in order to prevent from occurring bearing base in the first above-mentioned structure, bearing sleeve is felt relieved spacing unstable, make
The problem rocked in sleeve, and the sleeve 42 of the present invention can also be using the second structure as shown in Figure 15, Figure 16, can by figure
Know, sleeve includes: the cylinder 421 of its bottom end opening；It is arranged on the molding fastening teeth 422 of cylinder top；It is arranged on molding fastening
The cone cylinder 423 of tooth tip；It is evenly distributed the stopper slot 424 on the barrel being opened in cone cylinder；Wherein, the first magnetic suspension Magnet 44
It is pressed together on the bottom of cylinder 421.Because sleeve is made up of metal material, and connected flabellum skeleton is plastic parts, therefore,
Using molding fastening teeth, can increase when connecting as one sleeve by way of insert injection molding with flabellum skeleton
Contact area between plastic parts and ironware and adhesion.
Accordingly, the centering stopping means of the present invention can be using the structure as shown in Figure 18, Figure 19, wherein, with second
The centering member that the sleeve of kind structure is connected is sleeve locator card 56, and as shown in Figure 19,20, this sleeve locator card includes: inwall
The spacing barricade 562 that the rounded cylinder of tapered, outer wall 561 is connected with cylinder inner wall；Wherein, the cone cylinder 423 of sleeve is inserted
In cylinder 561, and the stopper slot 424 of sleeve and the clamping of spacing barricade 562.Preferably, sleeve cone cylinder 423 is in positive taper, that is,
The top end diameter of cone cylinder is less than its bottom diameter, and the taper of sleeve locator card cylinder 561 inwall is matched with the taper of cone cylinder.
Additionally, it is preferred that, the spacing barricade of sleeve locator card is in cross (as shown in figure 20), and being opened in its cone cylinder of sleeve
Stopper slot 424 is also in cross (as shown in figure 16).Wherein, the outer ring of bearing is pressed together in the inwall of bearing base, and sleeve
The cylinder outer wall of locator card is against on the inner ring of bearing.
When the second magnetic suspension Magnet and the first magnetic suspension Magnet opposing polarities repel each other and interact, sleeve can be vertically
Motion makes its cone cylinder be inserted into the cylinder inner wall of sleeve locator card upwards, the stopper slot of sleeve can be connected to the limit of sleeve locator card
On the barricade of position, i.e. the positioning action to sleeve axial direction can be realized it is preferred that boring by the spacing barricade on sleeve locator card
Coordinate for gap between drum outer wall and cylinder inner wall, and also have between both contact surfaces after stopper slot and spacing barricade clamping
Gap.Therefore, when the second magnetic suspension Magnet is removed, because the first magnetic suspension Magnet is no longer influenced by the effect of repulsive force, make
Whole rotor assembly can fall because of action of gravity that (wherein, stopper slot and spacing barricade are assembling upper casing for a bit of displacement
It has been mutually matched and has agreed with a bit of displacement during body), consequently facilitating upper shell and centering member are separated from rotor assembly.
When rotor assembly rotates under stator module magnetic action, sleeve surrounds in bearing inner race with moving sleeve locator card
In space, rotation is so that bearing and sleeve locator card play certralizing ability to the rotation of rotor assembly.
Wherein, as shown in Fig. 2, Figure 13, the present invention is provided with columnar in top end opening in lower house 2 bottom centre
End cap 1, and the second magnetic suspension Magnet 11 is arranged in end cap (as shown in Figure 10), and it extend into the sky that lower house stop collar surrounds
Intracavity.
Wherein, as shown in figs. 7 to 9, the lower house 2 of the present invention includes: shell holder 21, and it includes base plate and is centered around
Bottom edge and the side plate vertical with base plate；The housing being arranged on the side plate outer rim of shell holder moulds bone 23；It is arranged on housing to prop up
On the base plate of frame 21 and there is the stop collar 22 with the through hole of base plate insertion；Be arranged on stop collar 22 outer wall for limiting stator
The rib 24 of module position.Wherein, it is centered around the side plate unclosed (as shown in Figure 7) of bottom edge in shell holder, so that with
Upper shell forms the air outlet vertical with air inlet after connecting.
Wherein, housing is moulded bone 23 and is plastic parts with stop collar 22, and the ironware that shell holder 21 is made for iron material, shell
Body is moulded and is connected as by way of insert injection molding respectively between bone 23 and shell holder 21, stop collar 22 and shell holder 21
Integrally.
Wherein, housing is moulded bone 23 and is included being arranged on the multiple protruding portion of shell holder side plate outer rim, and each protuberance sets
Putting screwed hole, with will pass through bolt, lower house being detachably connected with upper shell.And end cap is inserted in stop collar, and it is placed in
The second magnetic suspension Magnet in end cap and end cap can be connected as one using the method for tool press fit arrangement, it would however also be possible to employ the back of the body
The method of glue bond assembling connects as one.
Wherein, as shown in Figure 5, Figure 6, the stator module 3 of the present invention includes: stator pcb plate 31；It is placed on pcb plate
Bone 32 moulded by stator；It is wrapped in stator and mould three pairs of copper wire windings 33 on bone 32；And it is located at the magnet steel 34 at stator pcb plate center；
Wherein, magnet steel 34 center is provided with through hole, and through hole extends downwardly through pcb plate 31, and the stop collar of lower house is fed through this through hole
Interior it is preferred that the groove 35 (as shown in Figure 5) matching with the rib of stop collar outer wall is provided on the inwall of magnet steel,
So that the stator module position being inserted on lower house stop collar is fixed.Wherein, three pairs of copper wire windings of stator module are uniform
It is arranged on magnet steel periphery, and pcb plate is connected with power supply.
In design, the rotor assembly of the present invention is designed as outer rotor, i.e. stator module is placed in the fan of rotor assembly
The inside of leaf skeleton, thus reduce overall fan (i.e. z to) vertically physical dimension, save space, be easy to notebook computer
Whole Structure Optimation Design.Preferably, the ferro-gum that should make the rotor assembly after assembling is looped around the periphery of stator module,
And with the outward flange of stator module, there is certain interval.
Preferably, the first magnetic suspension Magnet of the present invention and the second magnetic suspension Magnet can all using permanent magnet it is also possible to
All using electric magnet.
If the first magnetic suspension Magnet and the second magnetic suspension Magnet are permanent magnet, then after the completion of fan assembling, turn
The magneticaction low suspension repelling each other in the first magnetic suspension Magnet and the second magnetic suspension Magnet is enclosed by the sleeve of sub-component in stop collar
In the cavity becoming, and the outer wall of the outer wall of sleeve or sleeve locator card will gently withstand on bearing.
If the first magnetic suspension Magnet and the second magnetic suspension Magnet are electric magnet, then after fan energising, rotor set
The magneticaction low suspension repelling each other in the first magnetic suspension Magnet and the second magnetic suspension Magnet is surrounded by the sleeve of part in stop collar
In cavity, and the outer wall of the outer wall of sleeve or sleeve locator card will gently withstand on bearing.
The stator module of maglev fan of the present invention drives the principle of rotor assembly rotation identical with the principle of prior art,
Here no longer repeats.
When rotor assembly of the present invention rotates under stator module magnetic force, sleeve rotates in stop collar, and covers
Cylinder is not in contact with stop collar inwall, i.e. when rotor assembly rotates, and by bearing and bearing base, sleeve is played with centering spacing
Effect is so that the axis of symmetry around its own as gyro for the sleeve rotates.
During design, sleeve outer diameter should be made to be less than stop collar internal diameter, i.e. to exist certain between sleeve outer wall and stop collar inwall
Gap is it is preferred that this gap is 5mm, so that during rotor assembly relative stator assembly magnetic suspension rotation, extending into limit
The outer wall of sleeve part in the set of position will not contact with stop collar inwall, makes will not do between rotor assembly and stator module
Relate to phenomenon.
Because, in the maglev fan of the present invention, rotor assembly does not adopt difficult to manufacture and the rotating shaft of processing, and rotor set
Part relative stator assembly is in maglev state and rotates under magnetic suspension state, and passes through stopping means of feeling relieved when rotating
Rotor assembly is carried out centering and spacing so that the fan of the present invention noise is little in the course of the work, will not be because of rotor assembly
Interfere with stator module and abnormal sound occurs, the flabellum of rotor assembly is not in eccentric situation when rotated；Additionally, rotor
The sleeve one side of assembly plays the effect of the first magnetic suspension Magnet being fixed for making rotor assembly be in magnetic suspension state, separately
On the one hand the stopping means that play and feel relieved connect with to rotor assembly centering and spacing effect, therefore, a set of multiplex, and this set
Cylinder is easy to process, and manufacture difficulty is little, reduces production cost, and sleeve and bearing touch, therefore rub little, heating is few, be difficult to grind
Damage.The structure of whole fan can adopt modular design, beneficial to doing over again, and all of metal parts (preferably ironware)
When being fixedly connected with plastic cement all by the way of embedded injection mo(u)lding, therefore, as long as ensureing the precision of mould it is ensured that whole
Precision after maglev fan assembling is so that manufacturing cost greatly reduces.
Additionally, the present invention also provides one kind to realize the maglev method of notebook computer fan, this notebook computer fan
Including as above with lower member: lower house 2, the stator module 3 being arranged in lower casing body are coordinated with stator module and have
The upper shell 5 that the rotor assembly 4 of flabellum is connected with lower house top, wherein, realizes maglev method and includes:
Rotor assembly 4 is installed and is used for realizing the maglev first magnetic suspension Magnet of rotor assembly；
The second relative magnetic suspension Magnet of first magnetic suspension Magnet is fixed on lower house bottom；
Centering stopping means for centering and the spacing rotor assembly being in magnetic suspension state are installed on upper shell 5；
Wherein, repelled each other by the same sex of the first magnetic suspension Magnet and the second magnetic suspension Magnet, make rotor assembly 4 with respect to fixed
Sub-component 3 magnetic suspension, and rotate under stator module 3 magneticaction；
Wherein, centering stopping means, by feeling relieved and spacing to maglev rotor assembly 4, make to be in magnetic suspension state
Rotor assembly 4 avoids interfering with stator module.
Specifically, the present invention realizes the maglev method of fan and includes:
By the outer ring of magnet holder press into the flabellum skeleton with flabellum inwall, ferro-gum is pressed into Magnet
The inwall of support；
By the way of pressing, the first magnetic suspension Magnet is arranged on inside sleeve bottom end；
By the way of insert injection molding, the sleeve with the first magnetic suspension Magnet and flabellum skeleton are connected as one,
With shape all-in-one-piece rotor assembly；
Method or gum using tool press fit arrangement are bonded the method assembled and are connected the second magnetic suspension Magnet with end cap
It is integrated；
End cap with the second magnetic suspension Magnet is inserted in the stop collar of lower house, and by the stator pack with magnet steel
Part is set on stop collar so that the bottom of cavity that surrounds positioned at lower house stop collar of the second magnetic suspension Magnet；
The top of stator module will be placed in rotor assembly described in shape all-in-one-piece, so that the first magnetic suspension Magnet is located at down
The top of the cavity that housing stop collar surrounds, now, the first magnetic suspension Magnet is relative with the second magnetic suspension Magnet, in the first magnetcisuspension
In the presence of the mutual expelling force of floating Magnet and the second magnetic suspension Magnet, rotor assembly is made to be suspended in above stator module；
Upper shell with bearing base and bearing is placed on rotor assembly, in the first magnetic suspension Magnet and the second magnetic
Under the active force that the suspension magnet same sex is repelled each other, sleeve can be placed in bearing base, thus by bearing and bearing base to turning
The sleeve of sub-component carries out feeling relieved and spacing；
To stator module energising so that rotor assembly rotates in the magnetic force of stator module, and, in rotary course
In, rotor assembly will not interfere with stator module.
By the breach (i.e. unclosed around the side plate of described base plate) that is opened on lower house so that the fan of the present invention
Air inlet through hollow shaft, radial direction air-out can be realized, thus being applied to current notebook computer.
Although the present invention has been described above with particularity, but the invention is not restricted to this, those skilled in the art can
Modified with the principle according to the present invention, therefore, the various modifications that all principles according to the present invention are carried out all should be understood to
Fall into protection scope of the present invention.
Claims (9)
1. a kind of maglev fan for notebook computer, comprising: lower house (2), the stator module being arranged in lower casing body
(3) coordinate with stator module and there is the upper shell (5) that the rotor assembly (4) of flabellum is connected with lower house top, its feature
It is also to include:
It is arranged on being used on described rotor assembly (4) and realize the maglev first magnetic suspension Magnet (44) of rotor assembly；
It is fixed on lower house bottom the second magnetic suspension Magnet (11) relative with described first magnetic suspension Magnet；
It is arranged on the spacing dress of centering for centering and the spacing rotor assembly being in magnetic suspension state on described upper shell (5)
Put；
Wherein, repelled each other by the same sex of described first magnetic suspension Magnet and the second magnetic suspension Magnet, make described rotor assembly (4) phase
For stator module (3) magnetic suspension, and rotate under described stator module (3) magneticaction；
Wherein, described centering stopping means, by feeling relieved and spacing to maglev rotor assembly (4), make to be in magnetic suspension state
Rotor assembly (4) avoid interfering with stator module；
Wherein, described centering stopping means include:
It is arranged on the bearing base (52) for limiting described rotor assembly axial location at described upper shell center；
It is arranged on the bearing (53) in bearing base (52)；
It is arranged in described bearing base (52) and pass through the centering member of the dead eye of bearing (53)；
Wherein, the center top of described rotor assembly (4) is connected with described centering member.
2. maglev fan according to claim 1 is it is characterised in that described rotor assembly (4) includes:
Columnar flabellum skeleton (41) in bottom end opening；
It is fixedly connected and is fed through the sleeve (42) at its center with flabellum skeleton (41)；
Wherein, described first magnetic suspension Magnet is arranged on the bottom of described sleeve；
Wherein, described flabellum ring is located at the outer wall of described flabellum skeleton (41)；
Wherein, described rotor assembly (4) is connected with described centering member by the top of described sleeve (42).
3. maglev fan according to claim 2 it is characterised in that:
Described sleeve includes: the cylinder (421) of its bottom end opening, is arranged on the molding fastening teeth (422) of cylinder top, is arranged on
Molding fastens the cone cylinder (423) of tooth tip, the stopper slot (424) being evenly distributed on the barrel being opened in cone cylinder；
Described centering member is sleeve locator card (56), comprising: the tapered cylinder of its inwall (561) is connected with cylinder inner wall
Spacing barricade (562)；
Wherein, described cone cylinder (423) is inserted in described cylinder (561), and described stopper slot (424) and described spacing barricade
(562) clamping.
4. maglev fan according to claim 2 it is characterised in that:
Described sleeve (42) is the cylinder of its both ends open；
Described centering member is to be arranged on described bearing base (52) center and the centration axis (55) extending downwardly；
Wherein, the top of described sleeve (42) is placed between described bearing and described centration axis, will pass through described first magnetic
The same sex of suspension magnet and the second magnetic suspension Magnet is repelled each other, so that described sleeve top is against on described bearing base, sleeve outer
Wall and described bearing touch.
5. maglev fan according to claim 2 is it is characterised in that described rotor assembly also includes:
It is arranged on the Magnet on described flabellum skeleton (41) inwall；
Wherein, described Magnet is ferro-gum, and ferro-gum is cylindrical.
6. maglev fan according to claim 1 is it is characterised in that described first magnetic suspension Magnet and the second magnetic suspension
Magnet is permanent magnet or electric magnet.
7. maglev fan according to claim 1 is it is characterised in that described lower house (2) includes:
Shell holder (21), including base plate be centered around bottom edge and the side plate vertical with base plate；
The housing being arranged on the side plate outer rim of shell holder moulds bone (23)；
It is arranged on the base plate of shell holder (21) and has the stop collar (22) with the through hole of base plate insertion；
It is arranged on the rib (24) for limiting described stator module position of stop collar (22) outer wall.
8. maglev fan according to claim 1 is it is characterised in that described lower house bottom centre is provided with top
The columnar end cap (1) of opening, described second magnetic suspension Magnet (11) is arranged in described end cap, and extend into described lower casing
In the cavity that body stop collar surrounds.
9. one kind realizes the maglev method of notebook computer fan, and described notebook computer fan includes: lower house (2), peace
The stator module (3) being contained in lower casing body and stator module coordinate and have rotor assembly (4) and the lower house top of flabellum
The upper shell (5) connecting is it is characterised in that methods described includes:
It is used for realizing the maglev first magnetic suspension Magnet of rotor assembly in the upper installation of described rotor assembly (4)；
The second relative magnetic suspension Magnet of described first magnetic suspension Magnet is fixed on lower house bottom；
In the upper spacing dress of centering installed for centering and the spacing rotor assembly being in magnetic suspension state of described upper shell (5)
Put；
Wherein, repelled each other by the same sex of described first magnetic suspension Magnet and the second magnetic suspension Magnet, make described rotor assembly (4) phase
For stator module (3) magnetic suspension, and rotate under described stator module (3) magneticaction；
Wherein, described centering stopping means, by feeling relieved and spacing to maglev rotor assembly (4), make to be in magnetic suspension state
Rotor assembly (4) avoid interfering with stator module；
Wherein, described centering stopping means include:
It is arranged on the bearing base (52) for limiting described rotor assembly axial location at described upper shell center；
It is arranged on the bearing (53) in bearing base (52)；
It is arranged in described bearing base (52) and pass through the centering member of the dead eye of bearing (53)；Wherein, described rotor assembly
(4) center top is connected with described centering member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410610514.9A CN104454586B (en) | 2014-11-02 | 2014-11-02 | Magnetic suspension fan used for notebook computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410610514.9A CN104454586B (en) | 2014-11-02 | 2014-11-02 | Magnetic suspension fan used for notebook computer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104454586A CN104454586A (en) | 2015-03-25 |
| CN104454586B true CN104454586B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410610514.9A Active CN104454586B (en) | 2014-11-02 | 2014-11-02 | Magnetic suspension fan used for notebook computer |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI615087B (en) * | 2015-07-03 | 2018-02-11 | 佳世達科技股份有限公司 | Electronic device equipped with fan |
| CN105041693B (en) * | 2015-07-10 | 2017-11-07 | 苏州佳世达电通有限公司 | Electronic installation with fan |
| CN109667777B (en) * | 2017-06-02 | 2020-11-06 | 东莞市杰伦塑胶灯饰有限公司 | Control part for adjusting and rebalancing rotating speed of magnetic suspension ventilation fan |
| TWI681130B (en) * | 2018-11-26 | 2020-01-01 | 建準電機工業股份有限公司 | Fan shell and fan wheel combination structure and fan shell |
| CN110107532A (en) * | 2019-05-22 | 2019-08-09 | 苏州顺福利智能科技有限公司 | The improved flabellum of structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW457758B (en) * | 1999-08-02 | 2001-10-01 | Delta Electronics Inc | Magnetic bearing motor |
| CN2492695Y (en) * | 2001-07-31 | 2002-05-22 | 孙杜华 | Magnetically suspended brush-less DC fan motor |
| CN2504411Y (en) * | 2001-10-15 | 2002-08-07 | 上海元山电器工业有限公司 | Small brushless d.c. fan |
| CN101532503B (en) * | 2008-03-14 | 2012-06-13 | 富准精密工业(深圳)有限公司 | Cooling fan |
| CN102400926A (en) * | 2010-09-14 | 2012-04-04 | 富泰华工业（深圳）有限公司 | Magnetic suspension-type fan |
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Effective date of registration: 20201209 Address after: 601-g6-1, 6th floor, building 2, No. 6, Shangdi West Road, Haidian District, Beijing 100085 Patentee after: Lenovo Kaitian Technology Co., Ltd Address before: 230601 418, 4 building, Hai Heng mansion 6, Cui Wei Road, Hefei economic and Technological Development Zone, Anhui Patentee before: HEFEI LCFC INFORMATION TECHNOLOGY Co.,Ltd. |