CN104426262A - Motor rotor and motor with same - Google Patents
Motor rotor and motor with same Download PDFInfo
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- CN104426262A CN104426262A CN201310374513.4A CN201310374513A CN104426262A CN 104426262 A CN104426262 A CN 104426262A CN 201310374513 A CN201310374513 A CN 201310374513A CN 104426262 A CN104426262 A CN 104426262A
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- rotor
- clips
- motor
- end edge
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Abstract
The invention provides a motor rotor and a motor with the same. The motor rotor comprises a rotating shaft, a rotor iron core and a plurality of magnets arranged on the rotor iron core. The motor rotor further comprises a fixing hoop; front end edges are formed on the plurality of magnets along an axial direction; and the fixing hoop is arranged at the front end edges so as to fix the plurality of magnets. Compared with the prior art, and according to the motor rotor, the fixing hoop of a closed ring structure can effectively ensure the fixation effect of the magnets. The motor rotor has the advantages of simple structure, convenient installation and high reliability of the operation of the motor.
Description
Technical field
The present invention relates to motor.
Background technology
Motor can be widely used in industry, the fields such as agricultural, household electrical appliance and Aero-Space.Rotor structure for permanent magnet motor can comprise two types: a kind of is external rotor electric machine, and one is inner rotor motor.The permanent magnet of external rotor electric machine is the inner peripheral surface being bonded in outer rotor iron core, thus can prevent the generation that permanent magnet disperses because of High Rotation Speed centrifugal force.But for inner rotor motor, a kind of permanent magnet fixed form is the external peripheral surface that permanent magnet is fixed on internal rotor iron core.In order to prevent permanent magnet and other materials is unlikely disperses when motor High Rotation Speed, usually need to take mechanical consolidation measure to permanent magnet.
No. CN2638325Yth, Chinese utility model patent discloses a kind of internal rotor permanent-magnetic brshless DC motor.The rotor magnetic steel of this motor is fixed on motor shaft cylindrical, and for preventing magnet steel from flying out, rotor magnetic steel cylindrical is wound with without latitude band.But in application process, be wound around the stability that can not ensure magnet steel without the mode of latitude band, meanwhile, too increasing the production time causes efficiency lower.No. CN201478978Uth, Chinese utility model patent then provides a kind of utilization and outside magnet steel, sets up bonding jumper in the mode of fixing magnet steel, and on rotor core, offers perforate with fixing metal bar.But this bonding jumper is split ring, therefore, from technique, add the complexity of electromechanics structure; From reliability, due to rotor perforate, thus add the unbalancing value of rotor.When motor High Rotation Speed (such as: 20000 revs/min), motor will produce huge vibrations and noise, causes greatly reduce the useful life of motor.From properties of product, perforate on rotor core, due to its asymmetric core structure, will change the Distribution of Magnetic Field of motor, then affect electric efficiency and heat balance.
Therefore, be necessary to provide a kind of permanent magnet machine rotor of improvement to overcome the problems referred to above.
Summary of the invention
The object of the present invention is to provide a kind of structure simple, convenient, that reliability is high rotor is installed.
For achieving the above object, the invention provides a kind of rotor, comprise rotating shaft, rotor core and be arranged at some magnet steel of rotor core, also comprise clips, described some magnet steel are in axial direction formed with front-end edge, and described clips is arranged on described front-end edge and sentences fixing described some magnet steel.
As a further improvement on the present invention, on described magnet steel, in axial direction relatively described front-end edge is also formed with end edge, and described clips comprises a pair, and it is separately positioned on front-end edge and end edge place.
As a further improvement on the present invention, described clips is ring of remaining silent.
As a further improvement on the present invention, described front-end edge and end edge are formed with depression respectively to interior, for holding described clips.
As a further improvement on the present invention, the cross section of described clips is flattened rectangular.
As a further improvement on the present invention, the cross section of described clips is rounded.
As a further improvement on the present invention, the cross section of described clips is L-type.
As a further improvement on the present invention, the accumulated width of described clips is less than or equal to the half of rotor core length.
As a further improvement on the present invention, described clips is that non-magnet material is made.
Another object of the present invention is to provide a kind of and there is the motor that structure is simple, install convenient, that reliability is high rotor.
For achieving the above object, the invention provides a kind of motor, this motor comprises the rotor as described in any one of claim 1 to 7.
The invention has the beneficial effects as follows: adopt the clips of ring structure of remaining silent effectively to ensure that the fixed effect of magnet steel, simultaneously structure simple, install convenient, running reliability of motor is high.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of permanent magnet machine rotor of the present invention.
Fig. 2 is the schematic perspective view after the clips of the permanent magnet machine rotor shown in Fig. 1 removes.
Fig. 3 is the part-structure schematic diagram of the permanent magnet machine rotor of the present invention shown in Fig. 1.
Embodiment
Describe the present invention below with reference to each execution mode shown in the drawings.But these execution modes do not limit the present invention, the structure that those of ordinary skill in the art makes according to these execution modes, method or conversion functionally are all included in protection scope of the present invention.
Figure 1 shows that the schematic diagram of the rotor 100 of magneto of the present invention.Described permanent magnet machine rotor 100 comprises rotating shaft 10, rotor core 20, is coated on rotor core 20 some magnet steel 30 circumferentially and is fixed on the clips 40 of described some magnet steel 30.In the present invention, the number of poles of described magnet steel can be the multiple of any 2.Along on the axial direction of rotor 100, described some magnet steel 30 form front-end edge 31 and end edge 32 jointly.From described front-end edge 31 and described end edge 32 towards the direction of described rotating shaft, be namely inwardly formed with depression 33 respectively.In the present embodiment, the bottom of described depression 33 is smooth surface, and its cross section is substantially in L-type.But in other implementations, described depression 33 can also present other section forms, the such as channel-shaped structure such as U-shaped.The design of depression 33, is to be installed, being contained in this by described clips 40 herein.In the present invention, described clips 40 is ring of remaining silent.Be arranged at a pair clips 40 that front-end edge 31 and end edge 32 cave in 33 respectively, all there is identical structure.Both width and the half being less than or equal to rotor core 20 length.In the present embodiment, described clips 30 is that flat is banded, that is the cross section of clips 30 is flattened rectangular.Certainly, in other embodiments, the cross section of described clips 30 also can be other structural forms, such as: circular cross-section, L-type cross section.But no matter take which kind of section form, described clips 30 is all required to be closed annular state.Compared to prior art, split ring is the weak link of mechanical strength at opening part.Due to motor High Rotation Speed, there is the change colded and heat succeed each other in rotor.Split ring there will be at opening part and send the phenomenon that gets loose, and then causes electrical fault, reduces the reliability of motor long-time running.In addition, the mounting process of remain silent ring or closed-loop structure is very simple, and be applicable to large-scale production, working (machining) efficiency is high, result of use good.Understandably, clips 30 of the present invention forms for non-magnet material manufacture.Described non-magnet material includes but not limited to stainless steel, plastics, resin and glass fibre etc.
In sum, with prior art in contrast, the beneficial effect of permanent magnet machine rotor of the present invention is: adopt the clips of ring structure of remaining silent effectively to ensure that the fixed effect of magnet steel, simultaneously structure simple, install convenient, running reliability of motor is high.
What deserves to be explained is; be described although the present invention take permanent magnet machine rotor as preferred embodiment; but; in the rotor of other types; as: DC brush series excited machine, servo motor rotor, brushless electric machine etc. (not exhaustive at this), all present inventors of enforcement then all belong to protection scope of the present invention.
Be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, technical scheme in each execution mode also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for feasibility execution mode of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
Claims (10)
1. a rotor, comprise rotating shaft, rotor core and be arranged at some magnet steel of rotor core, it is characterized in that: also comprise clips, described some magnet steel are in axial direction formed with front-end edge, and described clips is arranged on described front-end edge and sentences fixing described some magnet steel.
2. rotor as claimed in claim 1, it is characterized in that: on described magnet steel, in axial direction relatively described front-end edge is also formed with end edge, and described clips comprises a pair, it is separately positioned on front-end edge and end edge place.
3. rotor as claimed in claim 2, is characterized in that: described clips is ring of remaining silent.
4. rotor as claimed in claim 3, is characterized in that: described front-end edge and end edge are formed with depression respectively to interior, for holding described clips.
5. rotor as claimed in claim 3, is characterized in that: the cross section of described clips is flattened rectangular.
6. rotor as claimed in claim 3, is characterized in that: the cross section of described clips is rounded.
7. rotor as claimed in claim 3, is characterized in that: the cross section of described clips is L-type.
8. the rotor as described in any one of claim 5 to 7, is characterized in that: the accumulated width of described clips is less than or equal to the half of rotor core length.
9. rotor as claimed in claim 8, is characterized in that: described clips is that non-magnet material is made.
10. a motor, is characterized in that: comprise the rotor as described in any one of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374513.4A CN104426262A (en) | 2013-08-26 | 2013-08-26 | Motor rotor and motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374513.4A CN104426262A (en) | 2013-08-26 | 2013-08-26 | Motor rotor and motor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104426262A true CN104426262A (en) | 2015-03-18 |
Family
ID=52974498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310374513.4A Pending CN104426262A (en) | 2013-08-26 | 2013-08-26 | Motor rotor and motor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104426262A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11837935B2 (en) | 2021-02-02 | 2023-12-05 | Black & Decker, Inc. | Canned brushless motor |
| US11955863B2 (en) | 2022-02-01 | 2024-04-09 | Black & Decker Inc. | Circuit board assembly for compact brushless motor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4678954A (en) * | 1986-03-05 | 1987-07-07 | Kabushiki Kaisha Toshiba | Rotor with permanent magnets having thermal expansion gaps |
| CN1472873A (en) * | 2002-07-29 | 2004-02-04 | 西北工业大学 | Brushless rareearth persistant magnet DC motor |
| CN2786861Y (en) * | 2005-02-02 | 2006-06-07 | 核工业理化工程研究院华核新技术开发公司 | Rare earth permanent-magnetic brushless direct current motor |
| JP2008295178A (en) * | 2007-05-24 | 2008-12-04 | Meidensha Corp | Rotor structure of permanent magnet rotating electric machine |
| CN101523698A (en) * | 2005-12-21 | 2009-09-02 | 株式会社大宇电子 | Permanent magnet type DC motor assembly |
| CN102522838A (en) * | 2011-11-30 | 2012-06-27 | 西安久和能源科技有限公司 | Tangential magnetic steel permanent magnet motor rotor |
| CN203135610U (en) * | 2013-03-22 | 2013-08-14 | 东昌电机(深圳)有限公司 | Brushless electric machine |
-
2013
- 2013-08-26 CN CN201310374513.4A patent/CN104426262A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4678954A (en) * | 1986-03-05 | 1987-07-07 | Kabushiki Kaisha Toshiba | Rotor with permanent magnets having thermal expansion gaps |
| CN1472873A (en) * | 2002-07-29 | 2004-02-04 | 西北工业大学 | Brushless rareearth persistant magnet DC motor |
| CN2786861Y (en) * | 2005-02-02 | 2006-06-07 | 核工业理化工程研究院华核新技术开发公司 | Rare earth permanent-magnetic brushless direct current motor |
| CN101523698A (en) * | 2005-12-21 | 2009-09-02 | 株式会社大宇电子 | Permanent magnet type DC motor assembly |
| JP2008295178A (en) * | 2007-05-24 | 2008-12-04 | Meidensha Corp | Rotor structure of permanent magnet rotating electric machine |
| CN102522838A (en) * | 2011-11-30 | 2012-06-27 | 西安久和能源科技有限公司 | Tangential magnetic steel permanent magnet motor rotor |
| CN203135610U (en) * | 2013-03-22 | 2013-08-14 | 东昌电机(深圳)有限公司 | Brushless electric machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11837935B2 (en) | 2021-02-02 | 2023-12-05 | Black & Decker, Inc. | Canned brushless motor |
| US11855521B2 (en) | 2021-02-02 | 2023-12-26 | Black & Decker, Inc. | Brushless DC motor for a body-grip power tool |
| US11870316B2 (en) | 2021-02-02 | 2024-01-09 | Black & Decker, Inc. | Brushless motor including a nested bearing bridge |
| US11876424B2 (en) | 2021-02-02 | 2024-01-16 | Black & Decker Inc. | Compact brushless motor including in-line terminals |
| US11955863B2 (en) | 2022-02-01 | 2024-04-09 | Black & Decker Inc. | Circuit board assembly for compact brushless motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150318 |
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| RJ01 | Rejection of invention patent application after publication |