CN204145114U - A kind of efficiency utilization dust core material is to reduce the claw-pole motor rotor structure of iron loss - Google Patents
A kind of efficiency utilization dust core material is to reduce the claw-pole motor rotor structure of iron loss Download PDFInfo
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- CN204145114U CN204145114U CN201420663347.XU CN201420663347U CN204145114U CN 204145114 U CN204145114 U CN 204145114U CN 201420663347 U CN201420663347 U CN 201420663347U CN 204145114 U CN204145114 U CN 204145114U
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- rotor
- dust core
- pole
- alternating current
- current generator
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Abstract
The utility model discloses a kind of rotor for alternating current generator, it is characterized in that, this rotor comprises pawl pole and rotating shaft, and this pawl pole comprises some poles tooth, this pawl pole and this rotating shaft are fixed, the surface portion of at least one pole tooth of this pawl pole or whole covering one dust core layer.
Description
Technical field
The utility model relates to a kind of rotor, particularly relates to a kind of rotor for claw-pole structure motor.
Background technology
The motor of claw-pole structure is because it is firm in structure, production cost is low and can regulation output power thus be widely applied in automotive field easily.Along with in recent years more and more higher to the requirement of production efficiency and environmental protection, require also to improve for the efficiency of electric motor of automobile and volume etc. accordingly thereupon.
Due to the restriction of claw-pole motor structure and intensity, its rotor portion can not adopt the structure of silicon steel sheet stacked as stator, and can only adopt solid construction, and is completed by casting and turnning and milling processes.Cause claw-pole structure motor particularly outstanding compared to the iron loss of its rotor of motor of other types.Iron loss is the magnetic hysteresis loss of magnetic material and the general name of eddy current loss and residual loss.Wherein, magnetic hysteresis loss refers to that ferromagnetic material is as magnetizing mediums, the inherent loss (loss produced in electric energy conversion magnetic energy process) produced under certain excitation field; When eddy current loss refers to magnetic flux generation alternation, iron core produces induced electromotive force and then produces induced current, and induced current is swirl shape, is referred to as eddy current; The loss that induced current produces on iron core resistance is exactly eddy current loss; Residual loss refers to the loss except magnetic hysteresis loss and eddy current loss, because proportion is less, also can ignore.Rotor structure as shown in Figure 1, ellipse shade 10 points shows normal conditions lower rotor part iron loss region the most serious.
In order to reduce iron loss, in prior art, there is several solution.The technical scheme of the pole tooth surface fluting in pawl pole is provided in United States Patent (USP) U7525233.Reduce magnetic flux density by the mode of slotting at pole tooth surface, and reduce iron loss.The shortcoming of this technical scheme exists, although iron loss declines to some extent, therefore the performance of motor also can weaken.On the other hand, fluting causes the reduced stiffness of rotor, due to the deformation risk that centrifugal force causes when adding High Rotation Speed, and adds windage loss.
European patent EP 2157679 is by fluting on the tooth of pole and the mode embedding magnet steel or loop construction in groove reduces iron loss, sees Fig. 2-4.The shortcoming of this technical scheme is: in fluting, the first, add magnet steel the magnetic field of rotor then can be caused uncontrolled, its reason is in generator application, even if wish that motor idle running does not generate electricity, the magnet of rotor still can be done manual work, and therefore produces unnecessary loss.The second, arrange that coil then obviously considerably increases difficulty of processing in fluting.Three, coil can produce serious eddy current loss too as metal material simultaneously, causes fluting effect to be weakened and even offsets.
European patent EP 1770846 discloses a kind of pawl pole stator magneto, in order to reduce stator loss and special winding mode, have employed the claw-pole structure of dust core casting.Although dust core can ensure rigidity, in intensity or can not meet the huge centrifugal force needing to exist in the rotor of High Rotation Speed.
Utility model content
In order to overcome the defect existed in prior art, the purpose of this utility model is to provide one effectively to alleviate iron loss, process facility and cost-effective claw-pole motor rotor.
In order to realize above-mentioned utility model object, the utility model discloses a kind of rotor for alternating current generator, it is characterized in that, this rotor comprises pawl pole and rotating shaft, this pawl pole comprises some poles tooth, this pawl pole and this rotating shaft are fixed, the surface portion of at least one pole tooth of this pawl pole or whole covering one dust core layer.
Further, this dust core layer is fixed on the surface of this pole tooth by glue.
Further, this dust core layer forms a housing, and the surface of this pole tooth comprises at least one guide-track groove, and one end of this housing is installed in this guide-track groove.
Further, the surface of this pole tooth comprises two guide-track grooves, and the two ends of this housing are installed in this guide-track groove respectively.
Further, the shape of this housing is consistent with the surface configuration of this pole tooth.
Further, this guide-track groove is positioned at two sides of this pole tooth.
Further, the outer surface of this dust core layer and the surface of this pole tooth are positioned at same plane.
Compared with prior art, rotor arrangement utilization provided by the utility model is slotted at rotor surface and adds a cover the intimate lid of press-powder, utilize the soft magnetic material characteristic of dust core, it has good magnetic conductivity, but has relatively low eddy current loss and magnetic hysteresis loss.Like this, both can reduce rotor iron loss, ensure again the magnetic flux density of rotor surface, and therefore ensure that the performance of motor.The mounting means of dust core lid, the rotor strength that can also to a certain degree make up slots causes weakens, and level and smooth rotor surface decreases windage loss.Namely this patent make use of the speciality of dust core, reduces again the use amount of dust core material to greatest extent.On the basis that traditional moulds retains, only need do little change, certain improvement effect can be reached.Therefore product up-gradation cost also can reduce.
Accompanying drawing explanation
Can to be described in detail by following utility model and institute's accompanying drawings is further understood about advantage of the present utility model and spirit.
Fig. 1 is claw-pole motor and the easy schematic diagram that iron loss region occurs in prior art;
Fig. 2 is a kind of fluting schematic diagram at rotor surface in prior art;
Fig. 3 is the schematic diagram embedding magnet steel in the fluting shown in Fig. 2;
Fig. 4 is the schematic diagram embedding coil in the fluting shown in Fig. 2;
Fig. 5 is the part dust core assembling schematic diagram of a kind of embodiment of the utility model;
Fig. 6 is the part rotor schematic diagram of a kind of embodiment of the utility model.
Embodiment
The rotor for alternating current generator of a kind of specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.But, the utility model should be understood as and be not limited to this execution mode described below, and technical concept of the present utility model can combine with other known technologies or function other technologies identical with those known technologies and implements.
In the following description, in order to clear displaying structure of the present utility model and working method, to be described by many Directional words, but should by "front", "rear", "left", "right", " outward ", " interior ", " outwards ", " inwardly ", " on ", the Word Understanding such as D score for convenience of term, and not should be understood to word of limitation.
The purpose of this utility model is to provide one effectively to alleviate iron loss, process facility and cost-effective claw-pole motor rotor.
Fig. 5 and Fig. 6 shows a kind of embodiment of the utility model rotor, and there is a fluting 3 on pole tooth 1 surface of rotor claw pole, and dust core lid 2 is a lid-like, and the intimate lid 2 of press-powder buckles into from fluting 3 and is fixed together with pole tooth 1.Fig. 6 illustrates the state of dust core lid 2 installation, and itself and whole rotor structure combine together.Better assemble to make rotor and dust core structure, contact-making surface in the fluting of intimate at press-powder to rotor adds glue, make assembling more simultaneously, elastic property based on glue reduces stress (as rotated the centrifugal force etc. the produced) effect to dust core, and reduces the noise vibrating and cause.Certainly, the fluting of dust core lid and rotor assembling can be single, also can be and corresponds to the opposite side symmetric position of slotting position shown in Fig. 5 thus form a cross-notching.
In the present embodiment, whole pole tooth 1 does not wrap up by dust core lid 2, but is covered by the outer surface of pole tooth 1 by the mode being similar to U-shaped.The benefit done like this is, namely pawl extremely original steel body materials and structures is not changed, do not reduce original magnetic saturation and intensity, to meet power output and High Rotation Speed, the ferromagnetic loss of pawl pole on High Rotation Speed rotor surface can also be eliminated by the mode of dust core lid.
In another embodiment, the mode directly bondd by glue between pole tooth 1 and dust core layer is fixed.In this embodiment, dust core layer only can cover the outermost of pole tooth 1.
Compared with prior art, rotor arrangement utilization provided by the utility model is slotted at rotor surface and adds a cover the intimate lid of press-powder, utilize the soft magnetic material characteristic of dust core, it has good magnetic conductivity, but has relatively low eddy current loss and magnetic hysteresis loss.Like this, both can reduce rotor iron loss, ensure again the magnetic flux density of rotor surface, and therefore ensure that the performance of motor.The mounting means of dust core lid, the rotor strength that can also to a certain degree make up slots causes weakens, and level and smooth rotor surface decreases windage loss.Namely this patent make use of the speciality of dust core, reduces again the use amount of dust core material to greatest extent.On the basis that traditional moulds retains, only need do little change, certain improvement effect can be reached.Therefore product up-gradation cost also can reduce.
Just preferred embodiment of the present utility model described in this specification, above embodiment is only in order to illustrate the technical solution of the utility model but not to restriction of the present utility model.All those skilled in the art comply with design of the present utility model by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should within scope of the present utility model.
Claims (7)
1. the rotor for alternating current generator, it is characterized in that, described rotor comprises pawl pole and rotating shaft, and described pawl pole comprises some poles tooth, described pawl pole and described rotating shaft are fixed, the surface portion of at least one pole tooth of described pawl pole or whole covering one dust core layer.
2., as claimed in claim 1 for the rotor of alternating current generator, it is characterized in that, described dust core layer is fixed on the surface of described pole tooth by glue.
3., as claimed in claim 1 for the rotor of alternating current generator, it is characterized in that, described dust core layer forms a housing, and the surface of described pole tooth comprises at least one guide-track groove, and one end of described housing is installed in described guide-track groove.
4., as claimed in claim 3 for the rotor of alternating current generator, it is characterized in that, the surface of described pole tooth comprises two guide-track grooves, and the two ends of described housing are installed in described guide-track groove respectively.
5., as claimed in claim 3 for the rotor of alternating current generator, it is characterized in that, the shape of described housing is consistent with the surface configuration of described pole tooth.
6., as claimed in claim 4 for the rotor of alternating current generator, it is characterized in that, described guide-track groove is positioned at two sides of described pole tooth.
7., as claimed in claim 1 for the rotor of alternating current generator, it is characterized in that, the outer surface of described dust core layer and the surface of described pole tooth are positioned at same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663347.XU CN204145114U (en) | 2014-11-07 | 2014-11-07 | A kind of efficiency utilization dust core material is to reduce the claw-pole motor rotor structure of iron loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663347.XU CN204145114U (en) | 2014-11-07 | 2014-11-07 | A kind of efficiency utilization dust core material is to reduce the claw-pole motor rotor structure of iron loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204145114U true CN204145114U (en) | 2015-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420663347.XU Withdrawn - After Issue CN204145114U (en) | 2014-11-07 | 2014-11-07 | A kind of efficiency utilization dust core material is to reduce the claw-pole motor rotor structure of iron loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204145114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362779A (en) * | 2014-11-07 | 2015-02-18 | 上海法雷奥汽车电器系统有限公司 | Claw pole motor rotor structure efficiently utilizing compressed-powder iron core material to lower iron loss |
-
2014
- 2014-11-07 CN CN201420663347.XU patent/CN204145114U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362779A (en) * | 2014-11-07 | 2015-02-18 | 上海法雷奥汽车电器系统有限公司 | Claw pole motor rotor structure efficiently utilizing compressed-powder iron core material to lower iron loss |
| CN104362779B (en) * | 2014-11-07 | 2017-10-10 | 上海法雷奥汽车电器系统有限公司 | A kind of efficient utilization dust core material is to reduce the claw-pole motor rotor structure of iron loss |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150204 Effective date of abandoning: 20171010 |