CN201797386U - Permanent magnet motor rotor - Google Patents
Permanent magnet motor rotor Download PDFInfo
- Publication number
- CN201797386U CN201797386U CN201020301207XU CN201020301207U CN201797386U CN 201797386 U CN201797386 U CN 201797386U CN 201020301207X U CN201020301207X U CN 201020301207XU CN 201020301207 U CN201020301207 U CN 201020301207U CN 201797386 U CN201797386 U CN 201797386U
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- China
- Prior art keywords
- permanent magnet
- boss
- magnetic yoke
- yoke
- hook
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- 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.)
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a permanent magnet motor rotor, which comprises a rotor body (1), and is characterized in that: the rotor body (1) is connected with more than two magnetic yoke bodies (3) by bolts (2), and the magnetic yoke bodies (3) are spliced into an annular or cylindrical shape; each magnetic yoke body (3) is formed by stacking arc-shaped magnetic yoke pieces processed by a magnetic conductive material, and permanent magnets (4) are arranged along the inner side or the outer side of the magnetic yoke body (3) and are tile-shaped; and lug bosses (5) are arranged at the two sides of the permanent magnets (4), and hooks (6) are arranged along the inner ring or the outer circle of the magnetic yoke body (3) and are connected with the lug bosses (5). The utility model adopts the matching of the hooks and the lug bosses to solve the difficulty that the permanent bodies fall off due to the aging of an adhesive. The permanent magnet motor rotor is easy to process, and is simple in assembly and manufacture, without tooling indexing, and the length of the magnetic yoke body can be arbitrarily adjusted. The processing technology can be simplified, the manufacture cost can be reduced, and the magnetic filed in a magnetic yoke can be prevented from generating distortion. The length of the permanent magnet is not limited, the permanent magnet can be used for manufacturing large motors or motors with longer rotors, and the magnetic field distribution in the magnetic yoke is uniform.
Description
Technical field
The utility model relates to a kind of rotor, particularly a kind of permanent magnet machine rotor.
Background technology
Because popularizing of rare earth permanent-magnetic material and greatly developing of cost reduction and power electronic technology, rare-earth permanent-magnet electric machine more and more is applied in every field.In the manufacture process of magneto, need and to be fixed on the yoke with the permanent magnet that rare earth is made.The present common employing of fixing means be mounting method; mounting method convenient processing and manufacture, simple in structure; but maximum problem is because the powder metallurgy characteristic of rare earth material makes very firm that permanent magnet can't paste, and motor in use the problem that comes off because of the ageing of binders permanent magnet occurs through regular meeting.In order to solve this difficult problem, the permanent magnet both sides occur and be processed into dovetail shaped, the press strip made from non-magnet material between two permanent magnets, press strip are screwed on yoke, utilize the press strip both sides that permanent magnet is compressed.Though this fixed structure has solved the caducous problem of ageing of binders permanent magnet, need on yoke, process a lot of screws, there are processing technology complexity, problem that manufacturing expense is high.In view of the foregoing, there is the people to propose a kind of end plate way that the permanent magnet two ends are fixing that non-magnet material is made that increases at the yoke two ends again.Though this scheme has been avoided the problem of processing screw hole on yoke, can only adopt whole permanent magnet, the permanent magnet that inapplicable employing multistage magnetic patch constitutes, like this, the length of permanent magnet just has been subjected to certain restriction, so this kind structure can only be applied in small machine or the motor of rotor than weak point.Also having a kind of is to slot on yoke, owing to reduce in the cross section of fluting place yoke, can influence the even distribution of yoke internal magnetic field.
The utility model content
The purpose of this utility model is, a kind of permanent magnet machine rotor is provided.Improve the connection reliability of permanent magnet and yoke, prevent the problem that causes permanent magnet to come off because of ageing of binders.Have the characteristics that processing technology is simple, manufacturing expense is low simultaneously.Be applicable to the motor that big motor or rotor are long, and the Distribution of Magnetic Field in the yoke is even.
The technical solution of the utility model: a kind of permanent magnet machine rotor, comprise rotor block, it is characterized in that: rotor block be spliced into circular or columned yoke body more than two and be connected stacked the forming of circular-arc yoke sheet that the yoke body is processed into by permeability magnetic material; Be provided with permanent magnet along the yoke body inboard or the outside; The permanent magnet both sides are provided with boss; Be provided with hook along ring or cylindrical in the yoke body; Hook is connected with boss.
In the above-mentioned permanent magnet machine rotor, the length of described permanent magnet is equal to or less than the axial length of yoke body, and permanent magnet is made of magnetic patch.
In the aforesaid permanent magnet machine rotor, being shaped as of described boss is stepped, tenon shape, overhead kick shape, dovetail shaped or arbitrary shape that permanent magnet can't be deviate from from hook.
In the aforesaid permanent magnet machine rotor, describedly constitute, or constitute, but the length of every section boss should be not less than the thickness of monolithic yoke sheet by the boss that is provided with at interval more than two sections by one section boss.
In the aforesaid permanent magnet machine rotor, it is corresponding that described hook and boss connect the shape of the shape of a side and boss.
In the aforesaid permanent magnet machine rotor, described boss is connected with hook through adhesive.
Compared with prior art, the utility model has solved a difficult problem that causes permanent magnet to come off because of ageing of binders owing to adopted the cooperating firm being fixed on the yoke body of permanent magnet of hook and boss.Because the yoke body is stacked the forming of yoke sheet by slices, the length of yoke body can be regulated arbitrarily by the quantity that changes the yoke sheet, because the hook calibration on the yoke body is even, does not need the frock calibration when mounting permanent magnet, and assembling is made simple.And the yoke sheet is circular-arc, add and save cost more than the yoke sheet (can be laminated into the yoke body of cylinder or annular) of full circle ring-type man-hour, and difficulty of processing is also relatively low.When a lot of yoke lamella poststacks, the hook on the yoke sheet has just formed one and has colluded groove, and the boss of permanent magnet both sides inserts on the yoke body by colluding in the groove that paired symmetrically arranged hook forms, and cements with adhesive, thus fix very firm.Tangential and axial displacement can't take place in permanent magnet at all in colluding groove.The utility model has been owing to avoided opening radially screwed hole on the yoke body, thus both can simplified processing process, reduce manufacturing cost, can prevent that also the magnetic field in the yoke from distorting.Because permanent magnet is that full groove or segmentation are fixed, segmentation can be adjusted by the permanent magnet blocks number, not to resemble only fixing two ends of present certain structures, so can adopt the permanent magnet that constitutes by the multistage magnetic patch, like this, the length of permanent magnet is unrestricted, can be used to make big motor or the long motor of rotor.Because the utility model can adopt the segmentation boss, can reduce permanent magnet side end face leakage field, improve the permanent magnet effective rate of utilization, guarantee the intensity and the uniformity in magnetic field, improve electric efficiency, reduce electric machine temperature rise.Because the utility model need not slotted on yoke, can guarantee that the Distribution of Magnetic Field in the yoke is even, reduce magnetic resistance.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an assembling schematic diagram of the present utility model;
Fig. 3 is the partial enlarged drawing at A place among Fig. 2;
Fig. 4 is the schematic appearance after assembling is finished;
Fig. 5 is the local enlarged diagram of multistage hook;
Fig. 6 is a kind of prior art constructions schematic diagram;
Fig. 7 is another prior art constructions schematic diagram.
Being labeled as in the accompanying drawing: 1-rotor block, 2-bolt, 3-yoke body, 4-permanent magnet, 5-boss, 6-hook, 7-press strip, 8-sunk screw, 9-end plate.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Embodiment of the present utility model: a kind of permanent magnet machine rotor, permanent magnet machine rotor can be integral rotors, also can be the split rotors.The rotor of motor has plenty of columned, has plenty of circularly, and what this routine rotor adopted is circular.Its outward appearance as shown in Figure 4.Assembly structure as shown in Figure 2.In order clearly to see the fixed structure of permanent magnet clearly, the A place among Fig. 2 has been made partial enlarged drawing, as shown in Figure 3.Fig. 1 is a structure principle chart.Permanent magnet machine rotor comprises rotor block 1 as can be seen from Figure 2, and rotor block 1 can be a cast member, also can be that machine adds part.Rotor block 1 is connected with the yoke body 3 that the yoke sheet that is processed into permeability magnetic material is laminated into through bolt 2, relies on bolt 2 that many yoke lamella poststacks are compressed, and by adjusting the quantity of yoke sheet, can make the rotor of different length.Be spliced into circularly or cylindric by two yoke bodies 3, be provided with permanent magnet 4, determine according to the number of poles of motor along ring or cylindrical in the yoke body 3; Its characteristics as shown in figures 1 and 3, permanent magnet 4 can be tile, the radian of the radian of tile permanent magnet 4 and yoke body 3 inner arcs (when rotor is cylindric, with yoke body 3 outer arcs) is corresponding.Permanent magnet 4 both sides are provided with boss 5; Being shaped as of boss 5 is stepped, tenon shape, overhead kick shape, dovetail shaped or arbitrary shape that permanent magnet 4 can't be deviate from from hook 6.The overall length of boss 5 is identical with the length of rotor, can be made of one section boss; Also can adopt the mode that is provided with at interval to constitute, but the length of every section boss should be not less than the thickness of monolithic yoke sheet by the boss more than two sections or two sections; Shown in Figure 5 is the position of the hook of corresponding setting with boss, the boss of forming by three sections boss 5 of reflection, and boss 5 overall length are still identical with rotor length, but are made of the boss of three spacer segment settings; Hook 6 on yoke body 3 as shown in Figure 5, hook 6 is also corresponding with boss 5, is made of multistage hook 6.Boss 5 can shape with yoke sheet one, assemblies after also can processing with the split of yoke sheet.Ring is gone up (when rotor is cylindric, on cylindrical) and is provided with the paired symmetrically arranged hook 6 identical with permanent magnet 4 quantity in yoke body 3; Hook 6 is connected with boss 5 through adhesive.Because yoke body 3 is stacked the forming of yoke sheet by slices, the length of yoke body 3 can be regulated arbitrarily by the quantity that changes the yoke sheet, because hook 6 calibration on the yoke body are even, does not need the frock calibration when mounting permanent magnet 4, and assembling is made simple.When a lot of yoke lamella poststacks, hook on the yoke sheet 6 just forms and colludes groove, and the boss of permanent magnet both sides inserts on the yoke body by colluding in the groove that paired symmetrically arranged hook forms, and cements with adhesive, thus fix quite firm.The length of permanent magnet 4 is equal to or less than the axial length of yoke body 3, and permanent magnet 4 can be one whole, also can be a longer permanent magnet that is made of two or more than two magnetic patch.It is corresponding that hook 6 and boss 5 connects the shape of the shape of a side and boss 5, and permanent magnet 4 is inserted easily by colluding in the groove that hook forms.It can be continuous colluding groove, also can be segmentation setting, and the groove of being made up of hook that colludes of segmentation setting leaves the space as shown in Figure 5 between the hook between two permanent magnets 46, is beneficial to and intercepts magnetic circuit between two permanent magnets 4, prevents leakage field.
Fig. 6 is prior art constructions figure.Dovetail shaped is processed in permanent magnet 4 both sides, the press strip of between two permanent magnets 4, making 7 with non-magnet material, and press strip 7 usefulness sunk screws 8 are fixed on the yoke 3, utilize press strip 7 both sides that permanent magnet 4 is compressed.Though this fixed structure has solved the caducous problem of ageing of binders permanent magnet, need on yoke 3, process a lot of screws, there are processing technology complexity, problem that manufacturing expense is high.
Fig. 7 is the another kind of structure chart of prior art.Increase end plate 9 way that permanent magnet 4 two ends are fixing that non-magnet material is made at yoke 3 two ends.Though this scheme has been avoided the problem of processing screw hole on yoke 3, but can only adopt whole permanent magnet 4, the permanent magnet 4 that inapplicable employing multistage magnetic patch constitutes, like this, the length of permanent magnet 4 just has been subjected to certain restriction, so this kind structure can only be applied in small machine or the motor of rotor than weak point.
Claims (6)
1. a permanent magnet machine rotor comprises rotor block (1), it is characterized in that: rotor block (1) be spliced into circular or columned yoke body (3) more than two and be connected stacked the forming of circular-arc yoke sheet that yoke body (3) is processed into by permeability magnetic material; Along yoke body (3) inboard or the outside be provided with permanent magnet (4); Permanent magnet (4) both sides are provided with boss (5); Be provided with hook (6) along ring or cylindrical in the yoke body (3); Hook (6) is connected with boss (5).
2. permanent magnet machine rotor according to claim 1 is characterized in that: the length of described two above permanent magnets (4) is equal to or less than the axial length of yoke body (3), and permanent magnet (4) is made of the magnetic patch more than two.
3. permanent magnet machine rotor according to claim 1 is characterized in that: being shaped as of described boss (5) is stepped, tenon shape, overhead kick shape or dovetail shaped.
4. permanent magnet machine rotor according to claim 3 is characterized in that: described boss (5) is made of one section boss, or is made of the boss that is provided with at interval more than two sections, but the length of every section boss should be not less than the thickness of monolithic yoke sheet.
5. permanent magnet machine rotor according to claim 4 is characterized in that: it is corresponding that described hook (6) and boss (5) connect the shape of the shape of a side and boss (5).
6. permanent magnet machine rotor according to claim 5 is characterized in that: described boss (5) is connected with hook (6) through adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020301207XU CN201797386U (en) | 2010-01-22 | 2010-01-22 | Permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020301207XU CN201797386U (en) | 2010-01-22 | 2010-01-22 | Permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201797386U true CN201797386U (en) | 2011-04-13 |
Family
ID=43852283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020301207XU Expired - Fee Related CN201797386U (en) | 2010-01-22 | 2010-01-22 | Permanent magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201797386U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355070A (en) * | 2011-09-14 | 2012-02-15 | 管洪安 | Ferrite rotor of brushless motor |
| CN103001341A (en) * | 2012-11-19 | 2013-03-27 | 腾达电动科技镇江有限公司 | Iron core fixing structure of disc type motor |
| CN109149799A (en) * | 2012-08-31 | 2019-01-04 | 拉彭兰塔理工大学 | Motor |
| CN109565196A (en) * | 2016-08-03 | 2019-04-02 | Lg伊诺特有限公司 | Motor for unmanned plane and the unmanned plane including the motor |
-
2010
- 2010-01-22 CN CN201020301207XU patent/CN201797386U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355070A (en) * | 2011-09-14 | 2012-02-15 | 管洪安 | Ferrite rotor of brushless motor |
| CN109149799A (en) * | 2012-08-31 | 2019-01-04 | 拉彭兰塔理工大学 | Motor |
| CN103001341A (en) * | 2012-11-19 | 2013-03-27 | 腾达电动科技镇江有限公司 | Iron core fixing structure of disc type motor |
| CN109565196A (en) * | 2016-08-03 | 2019-04-02 | Lg伊诺特有限公司 | Motor for unmanned plane and the unmanned plane including the motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20180122 |