CN104578604A - Brushless motor and manufacturing method thereof - Google Patents
Brushless motor and manufacturing method thereof Download PDFInfo
- Publication number
- CN104578604A CN104578604A CN201510013267.9A CN201510013267A CN104578604A CN 104578604 A CN104578604 A CN 104578604A CN 201510013267 A CN201510013267 A CN 201510013267A CN 104578604 A CN104578604 A CN 104578604A
- Authority
- CN
- China
- Prior art keywords
- inductance
- bearing shell
- drive circuit
- containing bearing
- skeleton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Windings For Motors And Generators (AREA)
- Motor Or Generator Frames (AREA)
- Brushless Motors (AREA)
Abstract
The invention discloses a brushless motor which comprises a PCB, stators, a rotor, an oil bearing bush and a drive circuit. Both the drive circuit and the oil bearing bush are arranged on the PCB. A center shaft of the rotor is matched with a center hole of the oil bearing bush. The stators are composed of at least two inductors. The inductors are distributed on the periphery of the oil bearing bush. All the inductors are driven by the current output by the drive circuit to generate magnetic fields respectively and jointly form a rotating magnetic field surrounding the axis of the oil bearing bush so as to drive the rotor to rotate. Each inductor comprises a framework and a coil winding. The coil windings are formed by winding metal wires with insulating layers on the frameworks. The frameworks are arranged on the PCB and are made of nonmagnetic materials. The brushless motor is small in size, simple in structure, low in cost and high in automated production efficiency, and has greater advantages in the field of super-flat motors and miniature motors.
Description
Technical field
The present invention relates to motor, particularly relate to a kind of brushless electric machine and manufacture method thereof.
Background technology
At brushless electric machine mainly hollow-cup motor in the market, Common Shape is long tubular, and this brushless electric machine coil windings is complicated, small size developing direction is limited by coil windings realize, and the arrangement of coil windings, and the automated production efficiency of this motor is low, cost is high.
Summary of the invention
In order to make up above-mentioned the deficiencies in the prior art, the present invention proposes a kind of brushless electric machine and manufacture method thereof, has the advantage that the high and low cost of automated production efficiency is produced.
Technical problem of the present invention is solved by following technical scheme:
A kind of brushless electric machine, comprise PCB, stator, rotor, oil-containing bearing shell and drive circuit, described drive circuit and oil-containing bearing shell are all arranged in described PCB, the central shaft of described rotor coordinates with the centre bore of described oil-containing bearing shell, described stator is made up of at least two inductance, described inductance is distributed in around described oil-containing bearing shell, under the driving of the electric current that each described inductance exports at described drive circuit, produce magnetic field respectively and a common formation rotating magnetic field around described oil-containing bearing shell axle center, thus drive described rotor turns, each described inductance comprises skeleton and coil windings, described coil windings is wound on described skeleton by the metal wire containing insulating barrier and is formed, described skeleton is arranged in described PCB, the material of described skeleton is nonmagnetic substance.
Preferably, described inductance circumferentially to distribute outside described oil-containing bearing shell, at synchronization, described in each there is phase difference in the magnetic direction of inductance.
Preferably, the bottom of each described skeleton also has electrode, and described metal wire is wound on after on described skeleton, and the two ends of described metal wire are all fixing on the electrodes.
Preferably, described oil-containing bearing shell is processed by copper alloy powder, and described centre bore is through hole or half through hole.
Preferably, described coil windings is also provided with protective sleeve outward, and described protective sleeve is nonmagnetic substance.
Preferably, described PCB is provided with through-flow circuit, installs the pad of inductance described in each, installs the pad of described drive circuit and installs described pad or the described hole containing bearing shell of installation of containing bearing shell, described inductance, oil-containing bearing shell and drive circuit are all mounted in described PCB by surface mount process, and each inductance described is electrically connected with described drive circuit by through-flow circuit.
Preferably, described drive circuit is the integrated circuit of DC/AC or AC/AC circuit conversion.
Preferably, the shape of described skeleton is I shape, drum type or T-shaped.
A manufacture method for described brushless electric machine, comprises the steps:
(1) by described drive circuit be separately positioned in described PCB containing bearing shell;
(2) at least two described inductance are arranged in described containing around bearing shell, at least two described inductor combination form described stator, inductance described in each comprises skeleton and coil windings, described coil windings is wound on described skeleton by metal wire and is formed, described skeleton is arranged in described PCB, and the material of described skeleton is nonmagnetic substance;
(3) central shaft of described rotor is inserted the described centre bore containing bearing shell, after energising, produce magnetic field respectively under the driving of the electric current that inductance described in each exports at described drive circuit and jointly form a rotating magnetic field around described oil-containing bearing shell axle center, thus driving described rotor turns.
Preferably, described inductance circumferentially to distribute outside described oil-containing bearing shell, at synchronization, described in each there is phase difference in the magnetic direction of inductance.
The invention has the beneficial effects as follows: brushless electric machine of the present invention is a kind of miniature brushless electric machine, stator is arranged by least two inductor combination and is formed, in flat on the appearance integral of this brushless electric machine; The thickness of this brushless electric machine and volume are all less, and structure is simple and easy to maintenance, low cost of manufacture, its automated production efficiency are high.The present invention has stronger advantage at super flat electric machine and micromachine field, can be widely used in the fields such as micro electric tool, medical science, consumer electronics product.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the brushless electric machine in the embodiment of the present invention;
Fig. 2 is the electrical schematic diagram of the brushless electric machine in the embodiment of the present invention;
Fig. 3 is the schematic diagram of the inductance 11 in Fig. 1;
Fig. 4 is the schematic diagram that Fig. 3 overturns after 180 °;
Fig. 5 is the schematic diagram of the rotor 4 in Fig. 1;
Fig. 6 is the schematic diagram of the oil-containing bearing shell 3 in Fig. 1;
Fig. 7 is the schematic diagram of the PCB 2 in Fig. 1;
Embodiment
Below contrast accompanying drawing and combine preferred embodiment the invention will be further described.
The invention provides a kind of brushless electric machine, in one embodiment, as shown in Figure 1, comprise PCB 2, stator 1, rotor 4, oil-containing bearing shell 3 and drive circuit 5, described drive circuit 5 and oil-containing bearing shell 3 are all arranged in described PCB 2, the central shaft of described rotor 4 coordinates with the centre bore of described oil-containing bearing shell 3, described stator 1 is made up of at least two inductance 11, be made up of four inductance in this example, four inductance are evenly distributed on a circle outside oil-containing bearing shell 3, under the driving of the electric current that each inductance 11 exports at drive circuit 5, produce magnetic field respectively and a common formation rotating magnetic field around oil-containing bearing shell 3 axle center, thus rotor driven 4 rotates, each inductance 11 comprises skeleton 112 and coil windings 111, in the bottom of skeleton 112, there is electrode 113, described coil windings 111 is wound on described skeleton 112 by the metal wire containing insulating barrier and is formed, the two ends of metal wire are all fixed on electrode 113, described skeleton 112 is arranged in described PCB 2, the material of skeleton 112 is nonmagnetic substance, as being common inorganic material, as aluminium oxide etc., maybe can bear the organic material of more than 260 temperature, as bakelite etc.
The electrical schematic diagram of this brushless electric machine as shown in Figure 2, in this example, four inductance 11 are connected in series, share a drive circuit, the wherein Same Name of Ends of stain each inductance under representing energising situation, PIN1 and PIN2 represents the two ends of single inductance, between PIN1 to PIN2 coil windings around to being clockwise coiling, the coil windings of four inductance around to identical.Like this when alternating current flows through, four inductance just produce a rotating magnetic field around oil-containing bearing shell axle center, thus rotor driven 4 rotates.
Being produced as follows of above all parts:
One, the making of inductance 11
(1) obtain skeleton 112 with magnesium oxide doped aluminium ceramic powder by operations such as compression molding, sintering, chamferings, obtained skeleton 112 is in I shape.
(2) adopt water plating mode to form metal layer in the one side of skeleton 112, this metal layer is as electrode 113; Electrode 113 can also physical/chemical/process such as plasma sputtering technique or external metal terminals obtain.
(3) adopt enamel covered wire coiling one fixing turn on the center pillar of skeleton 112 to form the coil windings 111 of a helix, the two ends of enamel covered wire are fixed on electrode 113 by the mode such as thermocompression bonding or immersed solder, obtain inductance 11, as shown in Figures 3 and 4.This coil windings 111 produces a magnetic field when being energized, magnetic direction is determined jointly by current direction and coil winding direction, adopt multiple inductor combination to arrange and form stator, the coil windings of each inductance around to can be identical, the flow direction of electric current is changed by the through-flow circuit that PCB is arranged, the magnetic direction of the multiple inductance of synchronization is made to there is phase difference (namely the changes of magnetic field frequency that produces of each inductance is identical), the rotating magnetic field of common generation one centered by oil-containing bearing shell axle center 3, thus rotor driven 4 rotates.
(4) non magnetic glue or nonmagnetic heat-sealing sleeve pipe (meaning not shown in the figures) is adopted to protect coil windings 111.
In other embodiments of the making of inductance, the shape of skeleton 112 can also be drum type or T-shaped, and enamel covered wire wherein can be common round line, flat wire, multi cord etc.
Two, the making of rotor 4
With rare earth permanent-magnetic material, the conventional method such as prior powder metallurgy or temperature and pressure injection mo(u)lding is adopted to obtain the base substrate of rotor 4, obtained the rotor 4 of given shape size by heat treatment and magnetization, as shown in Figure 5, rotor 4 has a disk 42 and is connected to the central shaft 41 of disc centre.
Three, the making of oil-containing bearing shell 3
Use copper alloy paramagnetic material, the conventional method such as prior powder metallurgy method or temperature and pressure injection mo(u)lding is adopted to obtain the base substrate of oil-containing bearing shell 3, the oil-containing bearing shell 3 of given shape size is obtained by heat treatment and reprocessing, as shown in Figure 6, be cylindrical containing bearing shell 3, have a centre bore 31 at columniform center, this centre bore 31 coordinates with the central shaft 41 of rotor 4, central shaft 41 rotor driven rotates in centre bore 31, and centre bore 31 can be through hole also can be half through hole.
Four, the selection of drive circuit 5
According to actual design needs, selected corresponding existing DC/AC or AC/AC circuit conversion IC (integrated circuit, integrated circuit), main performance index: ac frequency, watt level, the ac frequency that the drive circuit selected in this example exports is 300Hz, and power is 0.3W.Drive circuit 5 mainly controls the access way of external power source, and the interchange access outside or direct current obtain the ac-excited of required frequency by conversion and be given to stator 1.By drive circuit 5, cyclic variation is carried out to the electric current flowing through each inductance 11, the magnetic field between each inductance 11 is made to carry out directional-rotation around the geometric center of each inductance 11, and a common generation rotating magnetic field around oil-containing bearing shell axle center, thus rotor 4 is driven to rotate according to certain speed.
Five, the making of PCB 2
As shown in Figure 7, described PCB 2 is provided with through-flow circuit 21, installs the pad 22 of inductance described in each, installs the pad 25 of described drive circuit and installs described half through hole 24 containing bearing shell 3, on described inductance 11, oil-containing bearing shell 3 and the pad of drive circuit 5 all by the relevant position of surface mount process wielding neck in described PCB, each inductance described is electrically connected with described drive circuit 5 by through-flow circuit 21.
Six, the assembling of brushless electric machine
Adopt SMD combine with technique hand assembled, according to a definite sequence by above each assembling parts in PCB 2, after outward appearance and performance test inspection, obtain brushless electric machine.
In the embodiment above, the coil windings of each inductance around to identical, and each inductance is connected in series and shares a drive circuit, and such mode can make that structure is simpler, cost is lower.Certainly in other embodiments: inductance can be less than 4, also can more than 4, the coil windings of each inductance around to also can not be identical, no matter each inductance coil windings around to whether identical, drive circuit can be multiple, such as, inductance can a corresponding electrical connection drive circuit, or identical around to the corresponding drive circuit of inductance.No matter adopt several drive circuit, no matter adopt several inductance, and no matter inductance coil windings around to whether identical, as long as meet each inductance under the driving of the output current of drive circuit, the changes of magnetic field frequency produced is identical, also namely there is phase difference at the magnetic direction of each inductance of synchronization, each inductance forms a rotating magnetic field around oil-containing bearing shell 3 axle center jointly.
What above embodiment obtained is Miniature brushless motor without brush electrode, in flat on appearance integral, can be widely used in the fields such as micro electric tool, medical science, consumer electronics product.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some equivalent to substitute or obvious modification can also be made, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a brushless electric machine, it is characterized in that: comprise PCB, stator, rotor, oil-containing bearing shell and drive circuit, described drive circuit and oil-containing bearing shell are all arranged in described PCB, the central shaft of described rotor coordinates with the centre bore of described oil-containing bearing shell, described stator is made up of at least two inductance, described inductance is distributed in around described oil-containing bearing shell, under the driving of the electric current that each described inductance exports at described drive circuit, produce magnetic field respectively and a common formation rotating magnetic field around described oil-containing bearing shell axle center, thus drive described rotor turns, each described inductance comprises skeleton and coil windings, described coil windings is wound on described skeleton by the metal wire containing insulating barrier and is formed, described skeleton is arranged in described PCB, the material of described skeleton is nonmagnetic substance.
2. brushless electric machine as claimed in claim 1, is characterized in that: described inductance circumferentially to distribute outside described oil-containing bearing shell, at synchronization, described in each, the magnetic direction of inductance exists phase difference.
3. brushless electric machine as claimed in claim 1 or 2, it is characterized in that: the bottom of each described skeleton also has electrode, described metal wire is wound on after on described skeleton, and the two ends of described metal wire are all fixing on the electrodes.
4. brushless electric machine as claimed in claim 1 or 2, it is characterized in that: described oil-containing bearing shell is processed by copper alloy powder, described centre bore is through hole or half through hole.
5. brushless electric machine as claimed in claim 1 or 2, it is characterized in that: described coil windings is also provided with protective sleeve outward, described protective sleeve is nonmagnetic substance.
6. brushless electric machine as claimed in claim 1 or 2, it is characterized in that: described PCB is provided with through-flow circuit, installs the pad of inductance described in each, installs the pad of described drive circuit and installs described pad or the described hole containing bearing shell of installation of containing bearing shell, described inductance, oil-containing bearing shell and drive circuit are all mounted in described PCB by surface mount process, and each inductance described is electrically connected with described drive circuit by described through-flow circuit.
7. brushless electric machine as claimed in claim 1 or 2, is characterized in that: described drive circuit is the integrated circuit of DC/AC or AC/AC circuit conversion.
8. brushless electric machine as claimed in claim 1 or 2, is characterized in that: the shape of described skeleton is I shape, drum type or T-shaped.
9. a manufacture method for brushless electric machine according to claim 1, is characterized in that, comprises the steps:
(1) by described drive circuit be separately positioned in described PCB containing bearing shell;
(2) at least two described inductance are arranged in described containing around bearing shell, at least two described inductor combination form described stator, inductance described in each comprises skeleton and coil windings, described coil windings is wound on described skeleton by metal wire and is formed, described skeleton is arranged in described PCB, and the material of described skeleton is nonmagnetic substance;
(3) central shaft of described rotor is inserted the described centre bore containing bearing shell, after energising, produce magnetic field respectively under the driving of the electric current that inductance described in each exports at described drive circuit and jointly form a rotating magnetic field around described oil-containing bearing shell axle center, thus driving described rotor turns.
10. the manufacture method of brushless electric machine as claimed in claim 9, is characterized in that: described inductance circumferentially to distribute outside described oil-containing bearing shell, at synchronization, described in each, the magnetic direction of inductance exists phase difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013267.9A CN104578604B (en) | 2015-01-09 | 2015-01-09 | A kind of brushless electric machine and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013267.9A CN104578604B (en) | 2015-01-09 | 2015-01-09 | A kind of brushless electric machine and its manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104578604A true CN104578604A (en) | 2015-04-29 |
| CN104578604B CN104578604B (en) | 2017-11-17 |
Family
ID=53094016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510013267.9A Active CN104578604B (en) | 2015-01-09 | 2015-01-09 | A kind of brushless electric machine and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104578604B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123581A (en) * | 2016-11-30 | 2018-06-05 | 深圳市有钢机电设备有限公司 | A kind of coil winding assembles all-in-one machine |
| CN113572322A (en) * | 2021-08-09 | 2021-10-29 | 浙江盘毂动力科技有限公司 | Assembling method of disc type motor |
-
2015
- 2015-01-09 CN CN201510013267.9A patent/CN104578604B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123581A (en) * | 2016-11-30 | 2018-06-05 | 深圳市有钢机电设备有限公司 | A kind of coil winding assembles all-in-one machine |
| CN108123581B (en) * | 2016-11-30 | 2023-12-22 | 东莞市有励电子有限公司 | Coil coiling assembly all-in-one |
| CN113572322A (en) * | 2021-08-09 | 2021-10-29 | 浙江盘毂动力科技有限公司 | Assembling method of disc type motor |
| CN113572322B (en) * | 2021-08-09 | 2022-04-15 | 浙江盘毂动力科技有限公司 | Assembling method of disc type motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104578604B (en) | 2017-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101951106B (en) | Ultrathin high-power direct current magnetoelectric motor | |
| CN204131349U (en) | Axial-gap permanent-magnet synchronous motor | |
| EP3454459B1 (en) | Efficient laminated coreless generator and manufacturing method therefor | |
| CN104578651B (en) | For the system and method for low-temperature heat ferrite magnet motor | |
| CN107210636A (en) | Electric rotating machine, coil and coil device | |
| US20190165634A1 (en) | Stator having housing-integrated bus bars and internal cooling jacket | |
| CN202004614U (en) | Ironless and brushless permanent magnet DC (Direct Current) motor with inner and outer rotors | |
| US20240146170A1 (en) | Electromagnetic Halbach array, devices, and methods | |
| CN101800456B (en) | Method for preparing amorphous alloy stator core by using modular mode | |
| CN104578604B (en) | A kind of brushless electric machine and its manufacture method | |
| US10461597B2 (en) | Winding structure for high power density, axial field motor | |
| CN102361385A (en) | Brushless direct current motor | |
| CN108141120A (en) | Motor | |
| CN106026425B (en) | Switched reluctance machines and preparation method with nanometer crystal alloy iron core | |
| CN102957222B (en) | Polyphase electromechanical machine and stator with the phase winding formed by different conductor material | |
| CN105762999B (en) | A kind of p-m rotor low harmony wave magnetization method and device | |
| JP4556379B2 (en) | Electric motor and manufacturing method thereof | |
| JP2003153472A (en) | Electric rotating machine and electromagnetic apparatus | |
| CN105515319B (en) | The method that non-magnetic conductive material is adsorbed using magnetic suction disc | |
| CN214314773U (en) | Motor rotor assembly | |
| CN105207437B (en) | A kind of alternating current generator | |
| CN201570917U (en) | Permanent magnet generator | |
| CN202068297U (en) | DC (Direct Current) machine | |
| CN206490509U (en) | With the alternating current generator without End winding for returning magnetic circuit stator core | |
| CN105375666A (en) | Novel super power motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |