CN201290033Y - Permanent magnet type motor rotor - Google Patents
Permanent magnet type motor rotor Download PDFInfo
- Publication number
- CN201290033Y CN201290033Y CNU2008201393309U CN200820139330U CN201290033Y CN 201290033 Y CN201290033 Y CN 201290033Y CN U2008201393309 U CNU2008201393309 U CN U2008201393309U CN 200820139330 U CN200820139330 U CN 200820139330U CN 201290033 Y CN201290033 Y CN 201290033Y
- Authority
- CN
- China
- Prior art keywords
- magnetite
- motor rotor
- holder
- described holder
- fixing seat
- 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.)
- Expired - Fee Related
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a permanent magnet motor rotor, which comprises a fixing seat, a shaft center, two or more magnets, and two or more magnet spacers; wherein an axial central hole is formed on the fixing seat; the shaft center penetrates through the central hole of the fixing seat and can rotate through magnetic induction to drive other external devices; the two or more magnets are radially arranged at the periphery of the fixing seat in an encircling manner, so as to generate magnetic induction with a motor stator; and the two or more magnet spacers are arranged on the fixing seat and positioned between adjacent two magnets. Therefore, the magnetic circuit is changed by virtue of the magnet spacers, so as to reduce the reluctance force between the magnets and the stator due to the revolving magnetic field, thereby improving the operational efficiency of the motor.
Description
Technical field
The utility model relates to a kind of permanent-magnet motor rotor, refers to especially a kind ofly utilize the configuration space between magnetite and the magnetite to change magnetic circuit, makes the rotating magnetic field between magnetite and stator change and reduce reluctance force, and then promotes the structural design of motor running usefulness.
Background technology
Now in the industry, often need provide power drive machinery to be rotated or the motion of other form, wherein again usually with the source of motor as power; Because motor can be converted into mechanical energy with electric energy or magnetic energy, so be widely used in the devices such as various industry, electrical equipment, transportation system.Generally speaking, the structure of motor is made of rotor and stator, by the magnetic flux distribution between rotor and the stator, impels rotor sensed and produce and to rotatablely move, and after this conduction that rotatablely moves is come out, just can provide required mechanical energy; Wherein, rotor and stator utilize magnet (or magnetite) itself to have the characteristics of magnetic, and are used to provide magnetic flux, be permanent-magnet motor, because permanent-magnet motor can form bigger torque in limited volume, usefulness and accuracy are also high, therefore are subjected to certain attracting attention on market.
In the prior art, permanent-magnet motor rotor 1 as shown in Figure 1, this N utmost point magnetite 10 is arranged in the mode that links to each other with S utmost point magnetite 11, when rotor 1 sensed rotation, because of the magnetic circuit relation can be at N utmost point magnetite 10 and S utmost point magnetite 11 joints, with produce very big magnetic resistance between the corresponding stator, the efficient of motor running is reduced.
The utility model content
In view of this, main purpose of the present utility model is to provide a kind of permanent-magnet motor rotor, utilize that configuration space changes magnetic circuit between the magnetite of motor rotor and the magnetite, make the rotating magnetic field of magnetite and stator change and reduce reluctance force, and then promote the usefulness of motor running.
For realizing described purpose, the technical solution adopted in the utility model is: a kind of permanent-magnet motor rotor comprises:
Holder has axial centre bore;
Rotate to drive the axle center of other external device (ED) via magnetic induction, described axle center is set in the centre bore of described holder and fixes with described holder;
With the periphery that is arranged radially in described holder around mode, in order to produce two or more magnetites of magnetic induction with the magnetic pole of motor stator; And
Be installed on the described holder and be disposed at two or more magnetite spacers between two adjacent described magnetites.
The utility model adopts the beneficial effect that technique scheme obtained to comprise:
1, changes magnetic circuit with the magnetite spacer, make the rotating magnetic field of magnetite and stator change and reduce reluctance force, with the usefulness of lifting motor running.
2, described magnetite independently is installed on the holder respectively, when wherein any one magnetite is impaired, as long as replace separately, and does not need to scrap totally.
Description of drawings
Fig. 1 is the distribution schematic diagram of prior art rotor magnetite;
Fig. 2 is the distribution schematic diagram of rotor magnetite of the present utility model;
Fig. 3 is the structural representation of permanent-magnet motor rotor of the present utility model.
Description of reference numerals
2 holders
20 centre bores
21 installing holes
22 latch fittings
3 axle center
40,41 magnetites
5 magnetite spacers
1 permanent-magnet motor rotor
10 N utmost point magnetites
11 S utmost point magnetites
Embodiment
According to effect and advantage that structure of the present utility model is formed and can be produced, conjunction with figs. is enumerated preferred embodiment of the present utility model and is described in detail as follows.
Permanent-magnet motor rotor configuration of the present utility model is to utilize a kind of magnetite specific arrangement mode, changes the magnetic circuit between the rotor magnetite and reduces reluctance force, and then reach the effect that reduces motor loss, produces high efficiency output.
As shown in Figures 2 and 3, permanent-magnet motor rotor of the present utility model comprises:
Axle center 3 is set in the centre bore 20 of holder 2 and fixes with described holder, can rotate via magnetic induction, again in order to drive other external device (ED);
Two or more magnetites 40,41 produce magnetic induction to be arranged radially in the periphery of holder 2 around mode with the magnetic pole with motor stator; And
Two or more magnetite spacers 5, these magnetite spacers 5 are installed on the holder 2, and are disposed between adjacent two magnetites 40,41.
By as can be known above-mentioned, isolate N utmost point magnetite 40 and adjacent S utmost point magnetite 41 by magnetite spacer 5, under the magnetic field effect effect, can the magnetic resistance between magnetite 40,41 and stator be diminished because of magnetite spacer 5 produces N, the S utmost point that magnetic is very weak.
Moreover, borrow magnetite spacer 5, the location of magnetite 40,41 is more prone to, easy to assembly, and the size of magnetite 40,41 and precision do not need very accurate and are easy to make; If when having certain magnetite 40,41 impaired, it be replaceable and do not need to scrap only needing the latch fitting on this magnetite 40,41 22 is removed totally, can significantly reduce cost.
The above is preferred embodiment of the present utility model only, is not to be used to limit protection range of the present utility model; Allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of the present utility model.
Claims (3)
1, a kind of permanent-magnet motor rotor is characterized in that it comprises:
Holder has axial centre bore;
Rotate to drive the axle center of other external device (ED) via magnetic induction, described axle center is set in the centre bore of described holder and fixes with described holder;
With the periphery that is arranged radially in described holder around mode, in order to produce two or more magnetites of magnetic induction with the magnetic pole of motor stator; And
Be installed on the described holder and be disposed at two or more magnetite spacers between two adjacent described magnetites.
2, permanent-magnet motor rotor according to claim 1, it is characterized in that, described holder is cylindrical, and the cylindrical surface of described holder cooperates the correspondence position that described magnetite is installed to be provided with most by latch fitting magnetite to be configured in installing hole on the described holder.
3, permanent-magnet motor rotor according to claim 1 is characterized in that, described magnetite spacer independently is installed on the described holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201393309U CN201290033Y (en) | 2008-10-27 | 2008-10-27 | Permanent magnet type motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201393309U CN201290033Y (en) | 2008-10-27 | 2008-10-27 | Permanent magnet type motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201290033Y true CN201290033Y (en) | 2009-08-12 |
Family
ID=40981714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201393309U Expired - Fee Related CN201290033Y (en) | 2008-10-27 | 2008-10-27 | Permanent magnet type motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201290033Y (en) |
-
2008
- 2008-10-27 CN CNU2008201393309U patent/CN201290033Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20121027 |