CN107154692A - A kind of permanent-magnet ferrite rotor - Google Patents
A kind of permanent-magnet ferrite rotor Download PDFInfo
- Publication number
- CN107154692A CN107154692A CN201710483173.7A CN201710483173A CN107154692A CN 107154692 A CN107154692 A CN 107154692A CN 201710483173 A CN201710483173 A CN 201710483173A CN 107154692 A CN107154692 A CN 107154692A
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- CN
- China
- Prior art keywords
- permanent
- magnet ferrite
- rotor
- rotor core
- magnet
- 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.)
- Pending
Links
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 78
- 238000000465 moulding Methods 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 235000008429 bread Nutrition 0.000 claims abstract description 6
- 210000003205 muscle Anatomy 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a kind of permanent-magnet ferrite rotor, belong to permanent magnet machine rotor technical field.Including a rotor core, multi-disc permanent-magnet ferrite, rotor core is in open up multiple axially extending bores evenly and at intervals on regular prism shape, rotor core；Permanent-magnet ferrite is in bread shape；The inner plane of each permanent-magnet ferrite is affixed in rotor core respective side, and the side plane of adjacent permanent magnet ferrite mutually fits, and the eccentric extrados that permanent-magnet ferrite two or two is abutted is collectively forming dented space；Rotor core is shaped to a unitary rotor jointly with permanent-magnet ferrite by cage type moulding, the end cap portions and filling molding that the cage type moulding takes shape in the bottom surface of the flank of each dented space, the transverse plane for being overmolded in permanent-magnet ferrite and rotor core by filling up are constituted in the muscle portion of axially extending bore, and the eccentric extrados of its outer peripheral edge profile of rotor and each permanent-magnet ferrite is misaligned.Present invention fixation is not fallen off persistently reliably, it is ensured that permanent-magnet ferrite rotor exterior magnetic field is sinusoidal waveform.
Description
【Technical field】
The invention belongs to permanent magnet machine rotor technical field, a kind of permanent-magnet ferrite rotor is specifically related to.
【Background technology】
Permanent magnet assembles mostly by way of upper and lower end cap and upper and lower protecting cover and solid by rivet together with rotor core
Surely PM rotor is turned into, PM rotor has baroque deficiency using end cap, protecting cover and by riveting molding.
Wherein, permanent magnet is typically inefficiently fixed to by permanent magnet and being connected for rotor core using adhesive surface-mount type piecewise
On the side of rotor core, this surface bonded structure is unfavorable for the maintenance of p-m rotor, and rotor core splits tired with permanent magnet
Difficulty or ease are damaged.When need change rotor core when, permanent magnet peel off rotor core during easily undermine it is original-pack can normal work
Permanent magnet；And when needing to peel off the permanent magnet of certain piece corrupted, easily injure rotor core, rotor core will be caused when serious
Scrap.Furthermore, come off in rotor rotation process because centrifugal force easily causes the permanent magnet being bonded by jelly.
【The content of the invention】
It is an object of the invention to provide a kind of reliable, the simple for structure permanent-magnet ferrite rotor of fixed permanent, its permanent magnet
Oxysome can bear the big centrifugal force produced under rotation operating mode at a high speed and not fall off, and ensure that rotor exterior magnetic field is sine wave
Shape.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of permanent-magnet ferrite rotor, including rotor core, a multi-disc permanent-magnet ferrite, have at rotor core center
Axis hole, its improvement is：The rotor core is in open up multiple axial directions on regular prism shape, rotor core evenly and at intervals to lead to
Hole；The multi-disc permanent-magnet ferrite is in bread shape, each permanent-magnet ferrite be respectively provided with an inner plane, eccentric extrados,
Symmetrical two side planes and symmetrical two transverse planes, the piece number of permanent-magnet ferrite and the number phase of its side of rotor core
Deng；The inner plane of each permanent-magnet ferrite is affixed on the corresponding side of rotor core, and the side plane of adjacent permanent magnet ferrite is mutually affixed
Close, and the eccentric extrados of two or two adjoinings is collectively forming dented space；Rotor core and the permanent-magnet ferrite for being arranged in its periphery
One unitary rotor is shaped to by cage type moulding jointly, wherein, the cage type moulding takes shape in each depression sky by filling up
Between flank, be overmolded in the end cap portions and filling molding of the transverse plane of the permanent-magnet ferrite and the bottom surface of rotor core
In the muscle portion composition of its axially extending bore of rotor core, two end cap portions are located at the two ends of each flank respectively, and position is distinguished at each flank two ends
In the periphery of correspondence end cap portions, the eccentric extrados of its outer peripheral edge profile of rotor and each permanent-magnet ferrite is misaligned.
It has 4+2n bars side to above-mentioned rotor core in each bottom surface of regular polygon, wherein, n=0~4.
Above-mentioned cage type moulding is non-magnetic.
Compared with prior art, the invention has the advantages that and beneficial effect：
1st, permanent-magnet ferrite is set in bread shape, and bread shape permanent-magnet ferrite is engaged with the rotor core of regular prism shape, and
So that its outer peripheral edge profile of the eccentric extrados and rotor of permanent-magnet ferrite is misaligned, permanent-magnet ferrite structure and rotor core knot
Structure can ensure that rotor exterior magnetic field of the present invention is sinusoidal waveform.
2nd, by cage type moulding and multi-disc permanent-magnet ferrite, rotor core are fixed-type is integral, the monoblock type turns
Minor structure is succinct, fixed permanent is reliable.Wherein, flank plays a part of circumferentially fixed whole permanent-magnet ferrites, and end cap portions are played
The effect of the radially fixed bottom surface of rotor core two and permanent-magnet ferrite both ends of the surface, muscle portion ensure end cap portions axially and securely with rotor
Iron core is fixed, it is seen that cage type moulding realizes the fixation fastness of unitary rotor from inside to outside, therefore rotor rotates what is produced
Centrifugal force still ensures that permanent-magnet ferrite continues to be fixed without coming off by reliable, and having abandoned existing riveting molding rotor, it is complicated
The deficiency of structure, and permanent magnet need to be adhered to the outer surface of rotor core piecewise with adhesive, can avoid in full rotor
Indivedual permanent magnets bonding defect that may be present.
3rd, permanent-magnet ferrite rotor of the present invention advantageously can come real from its external damage cage type moulding with low cost
Show disassembling for rotor.When because rotor core damage need to be repaired when, the replacing of rotor core do not undermine can normal work forever
Magnetic ferrites；And when that need to be repaired because of the damage of certain piece permanent-magnet ferrite, it is only necessary to that piece permanent-magnet ferrite of damage is replaced,
Rotor core good for use will not be undermined, the permanent magnetism of intact rotor core and intact number can be utilized during injection molding again
Ferrite, is not to scrap whole rotor.
【Brief description of the drawings】
Fig. 1 is the stereogram of the rotor core of the present invention；
Fig. 2 is Fig. 1 top view；
Fig. 3 is the stereogram of the permanent-magnet ferrite of the present invention；
Fig. 4 is the schematic diagram that permanent-magnet ferrite is attached on each side of rotor core；
Fig. 5 is schematically shown outside outer peripheral edge profile (part) line and wherein a piece of its bias of permanent-magnet ferrite of rotor
The schematic diagram of circle (part) where cambered surface；
Fig. 6 schematically shows the schematic diagram of rotor core and permanent-magnet ferrite injection；
Fig. 7 is the stereogram of cage type moulding；
Fig. 8 is the schematic diagram that cage type moulding and rotor core, permanent-magnet ferrite are shaped to unitary rotor jointly；
Fig. 9 is the schematic diagram (sinusoidal waveform) of the external magnetic field waveform of hexapole permanent magnet ferrite rotor.
【Embodiment】
Refer to shown in Fig. 1,2,3,4,5,6,7,8, a kind of permanent-magnet ferrite rotor, including rotor core 1, a multi-disc
Permanent-magnet ferrite 2, has axis hole 10, its improvement is at the center of rotor core 1：Rotor core 1 is in regular prism shape, rotor iron
Multiple axially extending bores 100 are opened up on core 1 evenly and at intervals；The multi-disc permanent-magnet ferrite 2 is in bread shape, each permanent-magnet ferrite
2 are respectively provided with an inner plane 21, eccentric extrados 23, symmetrical two side planes 24 and symmetrical two transverse planes 22,
The number of its side 11 of the piece number with rotor core 1 of permanent-magnet ferrite 2 is equal；The inner plane 21 of each permanent-magnet ferrite 2, which is affixed on, to be turned
On the corresponding side of sub- iron core 1, the side plane 24 of adjacent permanent magnet ferrite 2 mutually fits, and the eccentric extrados of two or two adjoinings
It is collectively forming dented space 231；Rotor core 1 and be arranged in the permanent-magnet ferrite 2 of its periphery by cage type moulding 3 it is common into
Type is unitary rotor, wherein, the cage type moulding 3 by end cap portions 32, fill up and take shape in the flank of each dented space 231
31 and filling molding constituted in the muscle portion 30 of rotor core 1 its axially extending bore 100, two end cap portions 32 are located at each flank 31 respectively
Two ends, each two ends of flank 31 are located at the periphery of correspondence end cap portions 32, its outer peripheral edge profile of rotor and each permanent-magnet ferrite 2 respectively
Eccentric extrados 23 it is misaligned.
Wherein, end cap portions 32 are overmolded in the transverse plane 22 of permanent-magnet ferrite 2 and the bottom surface 12 of rotor core 1.
See Fig. 1,2, the rotor core 1 in the present embodiment is positive six prismsby shape, and the rotor core 1 of the positive six prismsby shape has
There are two bottom surfaces 12 and six sides 11, axially extending bore 100 is evenly distributed with six.
Rotor core 1 can be processed using prior art, such as by the rotor punching of multi-disc regular hexagon after stack
Formed in corner welding, the present embodiment rotor core 1 is preferentially obtained using the rotor punching of multi-disc regular hexagon through folded riveting.
Such as Fig. 3,4, the rotor core 1 of a positive six prismsby shape needs the permanent-magnet ferrite 2 of six quantity supporting, permanent magnet
Oxysome 2 can be transferred to the processing of magnetic material factory to obtain by the design requirement.
In the present embodiment, its eccentric place diameter of a circle of extrados 23 of permanent-magnet ferrite 2 is 31.06mm.
Its cage type moulding 3 of the present embodiment hexapole permanent magnet ferrite rotor is by two end cap portions 32, six flanks 31, the six roots of sensation
Muscle portion 30 is constituted.
As seen from Figure 5, the circular path C2 (not drawing all) and rotor of circle where its eccentric extrados of permanent-magnet ferrite
Outer peripheral edge contour line C1 (only drawing half) do not overlap.
The present embodiment permanent-magnet ferrite rotor a diameter of 54mm in its outer peripheral edge.
It has 4+ (2 × n) bars side to rotor core 1 in each bottom surface 12 of regular polygon, wherein, n=0~4, n is certainly
So count.
In the present embodiment, rotor core 1 is in positive six prismsby shape, and two bottom surfaces 12 of rotor core 1 are regular hexagon,
Now n=1.
As n=0, rotor core is in four-prism shape；As n=2, rotor core is prismatic in positive eight；As n=3,
Rotor core is prismatic in positive ten；As n=4, rotor core is prismatic in positive 12.
During the specific processing and forming of permanent-magnet ferrite rotor of the present invention：See Fig. 4, first six permanent-magnet ferrites 2 are pasted piecewise
Onto six sides 11 of rotor core 1, make the side 11 corresponding with rotor core 1 of inner plane 21 of every permanent-magnet ferrite 2
Laminating, and the side plane 24 of adjacent permanent magnet ferrite 2 mutually fit, then by this six permanent-magnet ferrites 2 and a rotor
Iron core 1 is put into the mould of injection machine (not shown) for one, and the internal diameter of its die cavity of mould is matched with the external diameter of rotor to be formed, so
Injection machine makes molten plastic fill six dented spaces 231, six axially extending bores respectively toward pressure injection molten plastic in mould afterwards
100 (six axially extending bores 100 in Fig. 4, six dented spaces 231 are visible in figure 6 filled molten plastic), and make
Two transverse planes 22 of molten plastic cladding permanent-magnet ferrite 2 and two bottom surfaces 12 (Fig. 6 is not shown) of rotor core 1, note
Modeling is finished is formed as a cage type moulding 3 (see Fig. 7), the cage type moulding 3 after the molten plastic in die cavity is cooled and solidified
Unitary rotor is shaped to jointly with rotor core 1, permanent-magnet ferrite 2, as shown in Figure 8.
When the internal diameter of its die cavity of mould is matched with the external diameter of rotor to be formed, the madial wall of die cavity with every permanent magnet oxygen
The center (most convex) of its eccentric extrados 23 of body 2 is contradicted.
Cage type moulding 3 is non-magnetic, and the present embodiment cage type moulding 3 uses commercially available PBT for raw material.
As seen from Figure 9, the external magnetic field waveform of hexapole permanent magnet of embodiment of the present invention ferrite rotor is sinusoidal waveform.
Claims (3)
1. a kind of permanent-magnet ferrite rotor, including rotor core, a multi-disc permanent-magnet ferrite, have axle at rotor core center
Hole, it is characterised in that：The rotor core is in open up multiple axially extending bores evenly and at intervals on regular prism shape, rotor core；Institute
It is in bread shape to state multi-disc permanent-magnet ferrite, and each permanent-magnet ferrite is respectively provided with an inner plane, eccentric extrados, symmetrical
Two side planes and symmetrical two transverse planes, the piece number of permanent-magnet ferrite are equal with the number of its side of rotor core；Respectively forever
The inner plane of magnetic ferrites is affixed on the corresponding side of rotor core, and the side plane of adjacent permanent magnet ferrite mutually fits, and two
The eccentric extrados of two adjoinings is collectively forming dented space；Rotor core passes through cage type with being arranged in the permanent-magnet ferrite of its periphery
Moulding is shaped to a unitary rotor jointly, wherein, the cage type moulding taken shape in by filling up each dented space flank,
The end cap portions and filling molding of the transverse plane of the permanent-magnet ferrite and the bottom surface of rotor core are overmolded in rotor iron
The muscle portion composition of its axially extending bore of core, two end cap portions are located at the two ends of each flank respectively, and each flank two ends are located at corresponding end respectively
The periphery of cap, the eccentric extrados of its outer peripheral edge profile of rotor and each permanent-magnet ferrite is misaligned.
2. permanent-magnet ferrite rotor according to claim 1, it is characterised in that：The rotor core its in regular polygon
Each bottom surface has 4+2n bars side, wherein, n=0~4.
3. permanent-magnet ferrite rotor according to claim 1, it is characterised in that：The cage type moulding is non-magnetic
's.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710483173.7A CN107154692A (en) | 2017-06-16 | 2017-06-16 | A kind of permanent-magnet ferrite rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710483173.7A CN107154692A (en) | 2017-06-16 | 2017-06-16 | A kind of permanent-magnet ferrite rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107154692A true CN107154692A (en) | 2017-09-12 |
Family
ID=59795743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710483173.7A Pending CN107154692A (en) | 2017-06-16 | 2017-06-16 | A kind of permanent-magnet ferrite rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107154692A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912300A (en) * | 2019-11-07 | 2020-03-24 | 联创汽车电子有限公司 | Rotating shaft and motor rotor unit |
| CN113054817A (en) * | 2019-12-27 | 2021-06-29 | 博世电动工具（中国）有限公司 | Electric tool, brushless motor and rotor |
| CN113196618A (en) * | 2018-12-17 | 2021-07-30 | 日本制铁株式会社 | Laminated iron core and rotating electrical machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11146584A (en) * | 1997-09-08 | 1999-05-28 | Matsushita Electric Ind Co Ltd | Synchronous motor with permanent magnet |
| CN201975870U (en) * | 2011-03-08 | 2011-09-14 | 浙江博望科技发展有限公司 | Ferrite three-phase magnetoelectric machine |
| CN202127311U (en) * | 2011-06-13 | 2012-01-25 | 广东志高空调有限公司 | Permanent magnet rotor of direct-current motor |
| WO2012119301A1 (en) * | 2011-03-07 | 2012-09-13 | 浙江博望科技发展有限公司 | Ferrite three-phase permanent magnet motor |
| WO2012119302A1 (en) * | 2011-03-07 | 2012-09-13 | 浙江博望科技发展有限公司 | Ferrite three-phase permanent magnet motor |
| EP2908407A2 (en) * | 2014-02-12 | 2015-08-19 | BSH Bosch und Siemens Hausgeräte GmbH | Electric drive motor, pump and household appliance comprising such a pump |
| CN105553196A (en) * | 2015-12-24 | 2016-05-04 | 赖家顺 | Method for allowing air-gap field to approach sinusoidal waveform of outer rotor by using multiple pieces of permanent magnets |
| JP2016134931A (en) * | 2015-01-15 | 2016-07-25 | 東芝産業機器システム株式会社 | Rotary electric machine and rotor |
-
2017
- 2017-06-16 CN CN201710483173.7A patent/CN107154692A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11146584A (en) * | 1997-09-08 | 1999-05-28 | Matsushita Electric Ind Co Ltd | Synchronous motor with permanent magnet |
| WO2012119301A1 (en) * | 2011-03-07 | 2012-09-13 | 浙江博望科技发展有限公司 | Ferrite three-phase permanent magnet motor |
| WO2012119302A1 (en) * | 2011-03-07 | 2012-09-13 | 浙江博望科技发展有限公司 | Ferrite three-phase permanent magnet motor |
| CN201975870U (en) * | 2011-03-08 | 2011-09-14 | 浙江博望科技发展有限公司 | Ferrite three-phase magnetoelectric machine |
| CN202127311U (en) * | 2011-06-13 | 2012-01-25 | 广东志高空调有限公司 | Permanent magnet rotor of direct-current motor |
| EP2908407A2 (en) * | 2014-02-12 | 2015-08-19 | BSH Bosch und Siemens Hausgeräte GmbH | Electric drive motor, pump and household appliance comprising such a pump |
| JP2016134931A (en) * | 2015-01-15 | 2016-07-25 | 東芝産業機器システム株式会社 | Rotary electric machine and rotor |
| CN105553196A (en) * | 2015-12-24 | 2016-05-04 | 赖家顺 | Method for allowing air-gap field to approach sinusoidal waveform of outer rotor by using multiple pieces of permanent magnets |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113196618A (en) * | 2018-12-17 | 2021-07-30 | 日本制铁株式会社 | Laminated iron core and rotating electrical machine |
| CN110912300A (en) * | 2019-11-07 | 2020-03-24 | 联创汽车电子有限公司 | Rotating shaft and motor rotor unit |
| CN113054817A (en) * | 2019-12-27 | 2021-06-29 | 博世电动工具（中国）有限公司 | Electric tool, brushless motor and rotor |
| CN113054817B (en) * | 2019-12-27 | 2022-06-14 | 博世电动工具（中国）有限公司 | Electric tool, brushless motor and rotor |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170912 |
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| RJ01 | Rejection of invention patent application after publication |