CN203774912U - Embedded permanent magnet motor rotor - Google Patents
Embedded permanent magnet motor rotor Download PDFInfo
- Publication number
- CN203774912U CN203774912U CN201420005452.4U CN201420005452U CN203774912U CN 203774912 U CN203774912 U CN 203774912U CN 201420005452 U CN201420005452 U CN 201420005452U CN 203774912 U CN203774912 U CN 203774912U
- Authority
- CN
- China
- Prior art keywords
- rotor core
- permanent magnet
- rotor
- embedded permanent
- magnetic bridge
- 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 - Lifetime
Links
- 230000004907 flux Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 6
- 238000004458 analytical method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides an embedded permanent magnet motor rotor, which comprises a rotary shaft, a rotor iron core and a plurality of magnets, wherein the rotor iron core is arranged on the rotary shaft; the plurality of magnets are uniformly arranged on the rotor iron core; a plurality of mounting grooves, corresponding to the magnets, are arranged on the rotor iron core; the magnets are arranged in the mounting grooves; two ends of each mounting groove are provided with empty grooves; a groove part is arranged between adjacent two mounting grooves; a first magnetic bridge is formed between the empty groove and the edge of the rotor iron core; two sides of the groove part respectively form second magnetic bridges; and the second magnetic bridge is connected with the first magnetic bridge. According to the embedded permanent magnet motor rotor,, as groove parts are arranged between the mounting grooves and second magnetic bridges are formed at two sides of the groove parts, the length of the first magnetic bridge can be effectively narrowed and the width is increased, the phenomenon that the magnetic bridge is designed to be narrow and long so as to reduce magnetic flux leakage in the prior art can be avoided, the rotor iron core is easy to manufacture, and the structure is stable.
Description
Technical field
The utility model relates to a kind of permanent magnet machine rotor, relates in particular to a kind of embedded permanent magnet machine rotor.
Background technology
Permanent magnet machine rotor is a kind of equipment that electric power is converted into the output of power, is mainly used in the equipment such as motor, pump.
Existing a kind of embedded Magnmet rotor structure as shown in Figure 1, it comprises: rotating shaft 100, be installed on the rotor core 300 in rotating shaft and be installed on the several permanent magnets 500 on rotor core 300, described rotor core 300 is provided with several mounting grooves 302, described magnet 500 is installed in those mounting grooves 302, between every two mounting grooves 302, be provided with a magnetic bridge 304, in order to reduce the leakage flux at magnetic bridge 304 places, magnetic bridge 304 needs very narrow with the width at rotor core 300 edges, its width is traditionally arranged to be 0.5mm, for the 0.8-5 of rotor core laminations thickness doubly, and length is traditionally arranged to be 2.3mm, cause it narrow and grow, be not easy to produce, and easily distortion.
Utility model content
The purpose of this utility model is to provide a kind of embedded permanent magnet machine rotor, and it is simple in structure, easily make, and Stability Analysis of Structures, and can effectively reduce the magnetic circuit of leakage flux.
For achieving the above object, the utility model provides a kind of embedded permanent magnet machine rotor, comprise: rotating shaft, be installed on rotor core and the uniform several magnet that are installed on rotor core in rotating shaft, on described rotor core, corresponding magnet is provided with several mounting grooves, described magnet is installed in those mounting grooves, the two ends of each mounting groove are equipped with dead slot, and be provided with slot part between adjacent two mounting grooves, between described dead slot and rotor core edge, form the first magnetic bridge, described slot part both sides form respectively the second magnetic bridge, and the second magnetic bridge is connected with the first magnetic bridge.
The cross section of described dead slot is triangle, and it comprises the second empty portion away from rotor core edge near the first empty portion at rotor core edge and relative the first empty portion, is less than the width of the second empty portion along the width of the first empty portion described in the length direction of mounting groove.
Described the first empty portion is 0.55～0.65mm apart from the distance at rotor core edge, and the length of this first empty portion is 0.2～0.3mm, and the distance between adjacent two first empty portions is greater than 1mm.
Described slot part is slotted hole groove, and its length direction is rotor core radial direction.
The length of described slotted hole groove is 1mm, and the distance between the second empty portion of its both sides of Edge Distance of this slotted hole groove is 0.55～0.65mm.
Described slot part is two circular recesss along rotor core arranged radially.
Described slot part is a circular recess.
Described mounting groove is four, array arrangement on described rotor core, and the length direction of each mounting groove and the radial direction of described rotor core vertical, described magnet corresponds to four, and the polarity of adjacent two magnet is contrary.
The beneficial effects of the utility model: embedded permanent magnet machine rotor of the present utility model, by slot part is set between mounting groove, form auxiliary magnetic bridge, effectively reduce the magnetic circuit of leakage flux, and then can avoid that the thickness of magnetic bridge is set to very thin situation in order to reduce the magnetic circuit of leakage flux, embedded Magnmet rotor is easily manufactured, and Stability Analysis of Structures.
In order further to understand feature of the present utility model and technology contents, refer to following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and explanation use, be not used for the utility model to be limited.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by embodiment of the present utility model is described in detail, will make the technical solution of the utility model and other beneficial effect apparent.
In accompanying drawing,
Fig. 1 is the structural representation of existing a kind of embedded permanent magnet machine rotor;
Fig. 2 is the structural representation of embedded permanent magnet machine rotor the first embodiment of the present invention;
Fig. 3 is the enlarged diagram of circle part in Fig. 2;
Fig. 4 is the structural representation of embedded permanent magnet machine rotor the second embodiment of the present invention;
Fig. 5 is the structural representation of the embedded permanent magnet machine rotor of the present invention the 3rd embodiment.
Embodiment
Technological means and the effect thereof for further setting forth the utility model, taked, be described in detail below in conjunction with preferred embodiment of the present utility model and accompanying drawing thereof.
Refer to Fig. 2 and Fig. 3, the utility model provides a kind of embedded permanent magnet machine rotor, comprise: rotating shaft 2, be installed in rotating shaft 2 by some laminations along the rotating shaft 2 axial stacking rotor core forming 4 and the uniform several magnet 6 that are installed on rotor core 4, on described rotor core 4, corresponding magnet 6 is provided with several mounting grooves 42, described magnet 6 is installed in those mounting grooves 42, the two ends of each mounting groove 42 are equipped with dead slot 44, and be provided with slot part 46 between adjacent two mounting grooves 42, between described dead slot 44 and rotor core 4 edges, be formed with the first magnetic bridge 48, described slot part 46 both sides are formed with the second magnetic bridge 49, this first magnetic bridge 48 is connected with the second magnetic bridge 49, the present invention by arranging slot part 46 between mounting groove 42, form the second magnetic bridge 49, can effectively reduce the magnetic circuit of leakage flux, and then can avoid existing embedded Magnmet rotor, in order to reduce the magnetic circuit of leakage flux, magnetic bridge is arranged to narrow and long situation, embedded Magnmet rotor is easily manufactured, and Stability Analysis of Structures.
In the present embodiment, described mounting groove 42 is four, and its array arrangement is on described rotor core 4, and the length direction of each mounting groove 42 is vertical with the radial direction of described rotor core 4, described magnet 6 corresponds to four, and the polarity of adjacent two magnet 6 is contrary.
Particularly, described dead slot 44 is triangularity roughly, it comprises near the first empty portion 442 at rotor core 4 edges and relative the first empty portion 442 away from the second empty portion 442 of empty portion 444, the first at rotor core 4 edges and the second empty portion 444 the different width of the first magnetic bridge 48 formation.Particularly, on the length direction of mounting groove 42, the width of described the first empty portion 442 is less than the width of the second empty portion 444, thereby make from the first empty portion 442 toward the second magnetic bridge 49 directions, the width of the first magnetic bridge 48 increases gradually, thereby effectively reduces difficulty of processing, simultaneously, the relative prior art of length of the first magnetic bridge 48 shortens to some extent, thereby has further improved the mechanical strength of the first magnetic bridge 48.
And, due to the setting of the second magnetic bridge 49 of slot part 46 and both sides, can shorten the length of side (meaning the length that shortens the first magnetic bridge 48) of dead slot 44 cross sections, and not increase the magnetic circuit of leakage flux, thereby can further reduce difficulty of processing, promote the mechanical strength of the first magnetic bridge 48.
Further, in the present embodiment, described the first empty portion 442 is 0.55～0.65mm apart from the distance T1 at rotor core edge, be preferably 0.6mm, the length W1 of this first empty portion is 0.2～0.3mm, is preferably 0.2mm, and the distance H 1 between adjacent two first empty portions is greater than 1mm, that is, the length of the first magnetic bridge 48 wider portion is greater than 1mm, has effectively guaranteed the mechanical strength of the first magnetic bridge 48.
Described slot part 46 is slotted hole groove, and its length direction is rotor core 4 radial direction.The length W2 of described slotted hole groove is 1mm, and the distance T2 between the second empty portion 444 of its both sides of Edge Distance of this slotted hole groove is 0.55～0.65mm, is preferably 0.6mm.The difficulty of processing of the embedded Magnmet rotor of this kind of structure is lower with respect to the difficulty of processing of existing embedded Magnmet rotor, can effectively reduce production costs.
Refer to Fig. 4, the second embodiment for the embedded Magnmet rotor of the present invention, in the present embodiment, described slot part 46 ' is two circular recesss along rotor core 4 arranged radiallys, it is arranged between adjacent two dead slots 44, particularly, its can be arranged at the first embodiment in the arc position place at two ends of slotted hole groove, it can realize above-mentioned technique effect equally.
Refer to Fig. 5, the 3rd embodiment for the embedded Magnmet rotor of the present invention, in the present embodiment, described slot part 46 ' ' be a circular recess, it is located at the position at close rotor core 4 edges between adjacent two dead slots 44, particularly, its can be made as with the second embodiment in two round dead slots near the position of rotor core 4 marginal positions circles dead slots, it can realize above-mentioned technique effect equally.
In sum, embedded Magnmet rotor of the present utility model, by slot part is set between mounting groove, form auxiliary magnetic bridge, effectively reduce the magnetic circuit of leakage flux, and then can avoid that the thickness of magnetic bridge is set to very thin situation in order to reduce the magnetic circuit of leakage flux, embedded Magnmet rotor is easily manufactured, and Stability Analysis of Structures.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection range of the utility model claim.
Claims (8)
1. an embedded permanent magnet machine rotor, it is characterized in that, comprise: rotating shaft, be installed on rotor core and the uniform several magnet that are installed on rotor core in rotating shaft, on described rotor core, corresponding magnet is provided with several mounting grooves, described magnet is installed in those mounting grooves, the two ends of each mounting groove are equipped with dead slot, and be provided with slot part between adjacent two mounting grooves, between described dead slot and rotor core edge, form the first magnetic bridge, described slot part both sides form respectively the second magnetic bridge, and the second magnetic bridge is connected with the first magnetic bridge.
2. embedded permanent magnet machine rotor as claimed in claim 1, it is characterized in that, the cross section of described dead slot is triangle, it comprises the second empty portion away from rotor core edge near the first empty portion at rotor core edge and relative the first empty portion, is less than the width of the second empty portion along the width of the first empty portion described in the length direction of mounting groove.
3. embedded permanent magnet machine rotor as claimed in claim 2, it is characterized in that, described the first empty portion is 0.55～0.65mm apart from the distance at rotor core edge, and the length of this first empty portion is 0.2～0.3mm, and the distance between adjacent two first empty portions is greater than 1mm.
4. embedded permanent magnet machine rotor as claimed in claim 3, is characterized in that, described slot part is slotted hole groove, and its length direction is rotor core radial direction.
5. embedded permanent magnet machine rotor as claimed in claim 4, is characterized in that, the length of described slotted hole groove is 1mm, and the distance between the second empty portion of its both sides of Edge Distance of this slotted hole groove is 0.55～0.65mm.
6. embedded permanent magnet machine rotor as claimed in claim 3, is characterized in that, described slot part is two circular recesss along rotor core arranged radially.
7. embedded permanent magnet machine rotor as claimed in claim 3, is characterized in that, described slot part is a circular recess.
8. embedded permanent magnet machine rotor as claimed in claim 1, it is characterized in that, described mounting groove is four, array arrangement is on described rotor core, and the length direction of each mounting groove is vertical with the radial direction of described rotor core, described magnet corresponds to four, and the polarity of adjacent two magnet is contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420005452.4U CN203774912U (en) | 2014-01-03 | 2014-01-03 | Embedded permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420005452.4U CN203774912U (en) | 2014-01-03 | 2014-01-03 | Embedded permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774912U true CN203774912U (en) | 2014-08-13 |
Family
ID=51292061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420005452.4U Expired - Lifetime CN203774912U (en) | 2014-01-03 | 2014-01-03 | Embedded permanent magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767303A (en) * | 2014-01-03 | 2015-07-08 | 广东德昌电机有限公司 | Embedded permanent magnet motor rotor |
| CN106160284A (en) * | 2015-04-10 | 2016-11-23 | 睿能机电有限公司 | A kind of p-m rotor |
-
2014
- 2014-01-03 CN CN201420005452.4U patent/CN203774912U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767303A (en) * | 2014-01-03 | 2015-07-08 | 广东德昌电机有限公司 | Embedded permanent magnet motor rotor |
| CN104767303B (en) * | 2014-01-03 | 2020-08-18 | 广东德昌电机有限公司 | Embedded permanent magnet motor rotor |
| CN106160284A (en) * | 2015-04-10 | 2016-11-23 | 睿能机电有限公司 | A kind of p-m rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
|
| CX01 | Expiry of patent term |