CN205489866U - Permanent -magnet machine rotor punching - Google Patents
Permanent -magnet machine rotor punching Download PDFInfo
- Publication number
- CN205489866U CN205489866U CN201620243870.6U CN201620243870U CN205489866U CN 205489866 U CN205489866 U CN 205489866U CN 201620243870 U CN201620243870 U CN 201620243870U CN 205489866 U CN205489866 U CN 205489866U
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- CN
- China
- Prior art keywords
- permanent magnet
- groove
- magnet motor
- circular arc
- rotor sheet
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- 238000004080 punching Methods 0.000 title claims abstract description 45
- 238000009423 ventilation Methods 0.000 claims description 8
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 210000002421 Cell Wall Anatomy 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Abstract
The utility model discloses a permanent -magnet machine rotor punching, its technical scheme main points are: the stator punching sheet comprises a punching sheet body, centre towards the piece body is equipped with the shaft hole, outer fringe towards the piece body is formed by connecting on a plurality of sections circular arcs, the center in the skew shaft hole in the centre of a circle of circular arc, locate still to be equipped with a plurality of mounting grooves that are used for installing the permanent magnet near the outer fringe on the piece body, be equipped with heat dissipation groove on the lateral wall of mounting groove.
Description
Technical field
This utility model relates to motor stamping, particularly to a kind of rotor sheet of permanent magnet motor.
Background technology
Magneto has low, the efficiency advantages of higher of loss, is employed widely at new energy field.
At present, notification number is that the Chinese patent of CN204858787U discloses a kind of rotor punching, the outer rim of its punching is to be formed by some sections of circular sliding slopes, the center of the center of circle deviation axis hole of described circular arc, break traditions the design of upper employing full circle in this way, make the non-homogeneous air gap of the generation between rotor and stator, thus improve back emf waveform, improve motor performance.
Although above-mentioned rotor punching reduces the negative effect of counter electromotive force by the design of non-full circle, but, its heat dispersion is poor, its permanent magnet is inserted in mounting groove, permanent magnet and mounting groove closely cooperate, during motor rotation, permanent magnet can generate heat, and heat is collected in mounting groove and is difficult to distribute.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide the rotor sheet of permanent magnet motor of a kind of perfect heat-dissipating.
Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of rotor sheet of permanent magnet motor, including punching body, the centre of described punching body is provided with axis hole, some sections of circular sliding slopes of the outer cause of described punching body form, the center of the center of circle deviation axis hole of described circular arc, being additionally provided with some mounting grooves for installing permanent magnet at outer rim on described punching body, the sidewall of described mounting groove is provided with heat radiation groove.
Pass through technique scheme, axis hole is used for installing machine shaft, the center of its center of circle of the circular arc in the outer rim of punching body deviation axis hole so that form non-homogeneous air gap between rotor and stator, thus effectively improve back emf waveform, the torque of teeth groove can be reduced again simultaneously；Permanent magnet is plugged in mounting groove, when rotor high-speed rotation, permanent magnet can produce substantial amounts of heat, herein, the heat radiation groove increased on the sidewall of mounting groove can increase the mobility of air, and the air of flowing is taken away the heat of permanent magnet, played good radiating effect, improve the performance of motor, extend motor service life.
Preferably, described heat radiation groove is distributed in the two ends of the longer sidewall of mounting groove length.
Pass through technique scheme, owing to permanent magnet is strip, the side that permanent magnet length is longer is bigger in the contact area of mounting groove cell wall, therefore radiating groove is located at and is conducive to increasing heat radiation function herein, simultaneously, being located at the two ends of sidewall, the heat radiation that can make permanent magnet is more uniform, advantageously reduces permanent magnet bulk temperature.
Preferably, being positioned on punching body and be provided with two mounting grooves inside described every section of circular arc, described mounting groove is symmetrical along the radial centre lines of circular arc.
By technique scheme, the circular arc radial centre lines both sides that are distributed in that mounting groove is symmetrical be can ensure that rotor punching weight everywhere is equally distributed, it is ensured that will not lay particular stress on side during electric machine rotation, thus ensure the stationarity of motor rotation.
Preferably, the radius of described circular arc is r, with the center of axis hole as the center of circle and the radius of the circle tangent with circular arc is as R, described 0.7R≤r≤0.9R.
Pass through technique scheme, when the radius of circular arc is too small, two circular arcs contact the breach produced will be excessive, so can affect the intensity of punching body, when the radius r of circular arc is excessive, then breach is the least, lose its effect existed, therefore the radius r of circular arc is the most suitable in the range of being in 0.7R ~ 0.9R here.
Preferably, described punching body is also evenly equipped with some ventilation slots along its circumference.
Pass through technique scheme, owing to the change of team of rotor high-speed rotary produces substantial amounts of heat, therefore good thermal diffusivity is particularly important to punching body, here, numerous punchings are superimposed as rotor, and ventilation slot forms the passage that air-flow passes through, and this passage runs through whole rotor, air-flow can circulate in passage and take away substantial amounts of heat when the rotor is turning, plays good radiating effect；The setting of ventilation slot simultaneously also can alleviate the weight that rotor is overall, saves material.
Preferably, described axis hole is provided with the flange for transmitting torque, described flange and axis hole intersection and is provided with the first groove.
Pass through technique scheme, flange is embedded in the caulking groove of rotating shaft for card and transmits torque, is difficult to distribute owing to also can produce heat between rotating shaft and rotor, therefore is provided with the first groove, first groove distributes use to leaving space heating load between rotating shaft and rotor, is effectively improved the service life of motor.
Preferably, described first groove is symmetrically located in the both sides of flange.
By technique scheme, what the first groove was symmetrical is disposed to allow the weight of rotor both sides keep uniformly, improving motor performance, also can guarantee that simultaneously dispel the heat between rotating shaft and rotor more uniform.
Preferably, described first groove is circular groove.
By technique scheme, owing to flange is to transmit torque, therefore the junction stress of flange and axis hole is more concentrated, and here, the groove of circular arc can reduce the image that stress is concentrated.
Preferably, the side of described axis hole is provided with the second groove.
Pass through technique scheme, owing to punching is stamped to form from mould, although punching seems that circumference is symmetrical, but, after using due to mould, abrasion differs everywhere, therefore punching the most also have difference, more neat in order to allow punching stacks, improve motor performance, therefore carry out fool proof by the second groove, during stacking, each punching is alignd by the second groove, it is ensured that it is more neat that punching stacks.
Preferably, punching body is also evenly equipped with some installing holes.
By technique scheme, it is scattered to allow punching be difficult to when stacking, fixing more stable between punching, can be arranged in installing hole with rivet and realize the fixing of punching.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of embodiment；
Fig. 2 is A portion enlarged drawing in Fig. 1；
Fig. 3 is B portion enlarged drawing in Fig. 1.
Reference: 1, punching body；2, axis hole；3, circular arc；4, mounting groove；5, heat radiation groove；6, ventilation slot；7, flange；8, the first groove；9, the second groove；10, installing hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
Rotor sheet of permanent magnet motor as shown in accompanying drawing 1 ~ 3, including punching body 1, the centre of punching body 1 is provided with axis hole 2, axis hole 2 is provided with the flange 7 for transmitting torque, flange 7 is square and the quantity of flange 7 is two and is symmetrically positioned in the circumference of axis hole 2, flange 7 and axis hole 2 intersection are provided with the first groove 8, and the first groove 8 is distributed in the both sides of flange 7, and the first groove 8 is circular arc 3 connected in star；The side of axis hole 2 is additionally provided with the second groove 9 for fool proof, and the second groove 9 is less than the first groove 8.Some sections of circular arcs 3 of the outer cause of punching body 1 are formed by connecting, the center of the center of circle of circular arc 3 deviation axis hole 2, and the radius of circular arc 3 is r, with the center of axis hole 2 as the center of circle and the radius of the circle tangent with circular arc 3 is as R, described 0.7R≤r≤0.9R.At outer rim, it is additionally provided with some mounting grooves 4 for installing permanent magnet on punching body 1, inside every section of circular arc 3 that mounting groove 4 is positioned on punching body 1, mounting groove 4 is symmetrical along the radial centre lines of circular arc 3, the sidewall of mounting groove 4 is provided with heat radiation groove 5, and heat radiation groove 5 is distributed in the two ends of the longer sidewall of mounting groove 4 length.Some ventilation slots 6 also it are evenly equipped with along its circumference on punching body 1, owing to the change of team of rotor high-speed rotary produces substantial amounts of heat, therefore good thermal diffusivity is particularly important to punching body 1, here, numerous punchings are superimposed as rotor, and ventilation slot 6 forms the passage that air-flow passes through, and this passage runs through whole rotor, air-flow can circulate in passage and take away substantial amounts of heat when the rotor is turning, plays good radiating effect；The setting of ventilation slot 6 simultaneously also can alleviate the weight that rotor is overall, saves material.Also it is evenly equipped with some installing holes 10 on punching body 1, can be arranged in installing hole 10 with rivet and realize the fixing of punching, it is ensured that punching is difficult to be scattered.
The above is only exemplary embodiment of the present utility model, and not for limiting protection domain of the present utility model, protection domain of the present utility model is determined by appended claim.
Claims (10)
1. a rotor sheet of permanent magnet motor, including punching body (1), the centre of described punching body (1) is provided with axis hole (2), some sections of circular arcs (3) of the outer cause of described punching body (1) are formed by connecting, the center in center of circle deviation axis hole (2) of described circular arc (3), described punching body (1) is upper is additionally provided with some mounting grooves (4) for installing permanent magnet at outer rim, it is characterized in that: the sidewall of described mounting groove (4) is provided with heat radiation groove (5).
Rotor sheet of permanent magnet motor the most according to claim 1, is characterized in that: described heat radiation groove (5) is distributed in the two ends of the longer sidewall of mounting groove (4) length.
Rotor sheet of permanent magnet motor the most according to claim 1, it is characterized in that: described every section of circular arc (3) inner side is positioned on punching body (1) and is provided with two mounting grooves (4), and described mounting groove (4) is symmetrical along the radial centre lines of circular arc (3).
Rotor sheet of permanent magnet motor the most according to claim 1, it is characterized in that: the radius of described circular arc (3) is r, with the center of axis hole (2), as the center of circle and the radius of the circle tangent with circular arc (3) is as R, described 0.7R≤r≤0.9R.
Rotor sheet of permanent magnet motor the most according to claim 1, is characterized in that: be also evenly equipped with some ventilation slots (6) along its circumference on described punching body (1).
Rotor sheet of permanent magnet motor the most according to claim 1, it is characterized in that: described axis hole (2) is provided with the flange (7) for transmitting torque, described flange (7) and axis hole (2) intersection and is provided with the first groove (8).
Rotor sheet of permanent magnet motor the most according to claim 6, is characterized in that: described first groove (8) is symmetrically located in the both sides of flange (7).
Rotor sheet of permanent magnet motor the most according to claim 7, is characterized in that: described first groove (8) is circular arc (3) connected in star.
Rotor sheet of permanent magnet motor the most according to claim 1, is characterized in that: the side of described axis hole (2) is provided with the second groove (9).
Rotor sheet of permanent magnet motor the most according to claim 1, is characterized in that: be also evenly equipped with some installing holes (10) on punching body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620243870.6U CN205489866U (en) | 2016-03-25 | 2016-03-25 | Permanent -magnet machine rotor punching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620243870.6U CN205489866U (en) | 2016-03-25 | 2016-03-25 | Permanent -magnet machine rotor punching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205489866U true CN205489866U (en) | 2016-08-17 |
Family
ID=56648459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620243870.6U Active CN205489866U (en) | 2016-03-25 | 2016-03-25 | Permanent -magnet machine rotor punching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205489866U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160280A (en) * | 2016-08-25 | 2016-11-23 | 湖州南浔新龙电机有限公司 | Rotor |
| CN106208466A (en) * | 2016-08-25 | 2016-12-07 | 湖州南浔新龙电机有限公司 | Rotor |
| CN106451849A (en) * | 2016-10-13 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
-
2016
- 2016-03-25 CN CN201620243870.6U patent/CN205489866U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160280A (en) * | 2016-08-25 | 2016-11-23 | 湖州南浔新龙电机有限公司 | Rotor |
| CN106208466A (en) * | 2016-08-25 | 2016-12-07 | 湖州南浔新龙电机有限公司 | Rotor |
| CN106451849A (en) * | 2016-10-13 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
| CN106451849B (en) * | 2016-10-13 | 2018-12-28 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotor structure, motor and compressor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |