CN204906033U - Permanent -magnet machine's rotor structure - Google Patents
Permanent -magnet machine's rotor structure Download PDFInfo
- Publication number
- CN204906033U CN204906033U CN201520437247.XU CN201520437247U CN204906033U CN 204906033 U CN204906033 U CN 204906033U CN 201520437247 U CN201520437247 U CN 201520437247U CN 204906033 U CN204906033 U CN 204906033U
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- China
- Prior art keywords
- arc surface
- center
- circle
- rotor
- radial groove
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- Expired - Fee Related
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- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a permanent -magnet machine's rotor structure, including rotor core and a plurality of permanent magnet, rotor core forms radial groove including the annular ring that is provided with center bore with from the convex a plurality of magnetic conduction pieces in the annular ring outside between two adjacent magnetic conduction pieces, and the permanent magnet is installed in the radial groove the inside, salient left stop hook and right stop hook respectively on the both sides magnetic conduction piece of radial groove's opening, and the outside arc surface of each magnetic conduction piece comprises the three -section arc surface one section arc surface in the middle of lieing in no. 1, lie in the arc surface no. 2 and the arc surface no. 3 of arc surface both sides respectively, make it under the requirement of satisfying torque ripple and tooth's socket torque, increase the output torque of motor to rotor core's magnetic field distribution is even, and the rotation of rotor is steady, and the noise is little.
Description
Technical field
The utility model relates to a kind of rotor structure of magneto, belongs to technical field of motors.
Background technology
At present, the rotor be used in magneto comprises rotor core and some permanent magnets, rotor core comprises the annular ring being provided with central shaft hole and the some magnetic inductive blocks protruded outside annular ring, radial groove is formed between adjacent two magnetic inductive blocks, permanent magnet is arranged on inside radial groove, the both sides magnetic inductive block of the peristome of radial groove protrudes stop hook respectively, and stop hook is pressed abd fixed on permanent magnet inside radial groove.
But the current following Railway Project of permanent magnet machine rotor ubiquity:
1) existing permanent magnet machine rotor is in order to torque ripple reduction and cogging torque, and the Driving Torque usually by sacrificing motor obtains, and both are difficult to get both.
2) due to rotor core design unreasonable, cause the Distribution of Magnetic Field of rotor core uneven, the operational efficiency of rotor is low.
3) in running, the back electromotive force fluctuation produced due to rotor core is large, and cause rotor turns not steady, noise is large.
Therefore, be necessary to be further improved.
Utility model content
Main purpose of the present utility model is the rotor structure providing a kind of magneto, makes it under the requirement meeting torque pulsation and cogging torque, increases the Driving Torque of motor, and the Distribution of Magnetic Field of rotor core is even, and the stability of rotation of rotor, noise is little.
Above-mentioned purpose is achieved by the following technical solution:
The rotor structure of magneto, comprise rotor core and some permanent magnets, rotor core comprises the annular ring being provided with central shaft hole and the some magnetic inductive blocks protruded outside annular ring, radial groove is formed between adjacent two magnetic inductive blocks, permanent magnet is arranged on inside radial groove, the both sides magnetic inductive block of the peristome of radial groove protrudes left stop hook and right stop hook respectively, the outer arc face of each magnetic inductive block is made up of three sections of arc surfaces, comprises and is positioned at one section of middle arc surface one, the arc surface two laying respectively at arc surface one both sides and arc surface three.
Above-mentioned its center of circle of arc surface one is consistent with the center of circle of rotor core.
Above-mentioned its center of circle of arc surface two is consistent with the center of circle of arc surface three.
Above-mentioned arc surface two is all the center of circle one segment distance radially departing from rotor core with the center of circle of arc surface three.
Above-mentioned arc surface two is symmetrical along the radial center of extension line of corresponding magnetic inductive block to arc surface three.
Above-mentioned arc surface two and arc surface one, arc surface three are inscribed circle relation or circumcircle relation with arc surface one.
Be provided with boss in the middle of the above-mentioned bottom at radial groove, the medial surface of permanent magnet is bearing on the end face of boss.
The utility model compared with prior art tool has the following advantages:
1) the outer arc face of each magnetic inductive block is made up of three sections of arc surfaces, comprise and be positioned at one section of middle arc surface one, the arc surface two laying respectively at arc surface one both sides and arc surface three, its center of circle of arc surface one is consistent with the center of circle of rotor core, arc surface two is all the center of circle one segment distance radially departing from rotor core with the center of circle of arc surface three, make it under the requirement meeting torque pulsation and cogging torque, increase the Driving Torque of motor, and the Distribution of Magnetic Field of rotor core is even, the stability of rotation of rotor, noise is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of permanent magnet machine rotor in embodiment.
Fig. 2 is the structural representation of single magnetic inductive block in embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, the present embodiment is a kind of rotor structure of magneto, comprise rotor core 1 and some permanent magnets 2, rotor core 1 comprises the annular ring 11 being provided with central shaft hole 100 and the some magnetic inductive blocks 12 protruded outside annular ring 11, central shaft hole 100 is for forming interference fit with armature spindle, and armature spindle is with rotor core 1 synchronous axial system and outputting power outward.Radial groove 13 is formed between adjacent two magnetic inductive blocks 12, permanent magnet 2 is arranged on inside radial groove 13, the both sides magnetic inductive block 12 of the peristome 130 of radial groove 13 protrudes left stop hook 121 and right stop hook 122 respectively, in the middle of the bottom of radial groove 13, be provided with boss 14, the medial surface of permanent magnet 2 is bearing on the end face of boss 14.By the side of left stop hook 121, right stop hook 122, boss 14 and magnetic inductive block 12, permanent magnet 2 is fixed on inside radial groove 13, even if in the process of rotor high-speed running, permanent magnet 2 also can not loosen easily, and structure is simple, reliability is high.The radial center of extension line of described radial groove 13 is through its peristome 130.
The outer arc face 120 of each magnetic inductive block 12 is made up of three sections of arc surfaces, comprises and is positioned at one section of middle arc surface 1, the arc surface 2 1202 laying respectively at arc surface 1 both sides and arc surface 3 1203.And its center of circle of arc surface 1 is consistent with the center of circle O of rotor core 1, its center of circle of arc surface 2 1202 is consistent with the center of circle of arc surface 3 1203, and arc surface 2 1202 is all center of circle O mono-segment distance radially departing from rotor core 1 with the center of circle A of arc surface 3 1203.Arc surface 2 1202 is symmetrical along the radial center of extension line of corresponding magnetic inductive block 12 to arc surface 3 1203.The dotted line passed from magnetic inductive block 12 in Fig. 1 is expressed as the radial center of extension line of magnetic inductive block 12.Arc surface 2 1202 and arc surface 1, arc surface 3 1203 are inscribed circle relation or circumcircle relation with arc surface 1.
By the structure in appropriate design magnetic inductive block 12 outer arc face 120, guiding magnetic field distributes, and makes it be evenly distributed, and back electromotive force fluctuation is little, thus makes rotor under the requirement meeting torque pulsation and cogging torque, increases the Driving Torque of motor.
And because arc surface 2 1202 and the center of circle A of arc surface 3 1203 are all center of circle O mono-segment distances radially departing from rotor core 1, namely arc surface 2 1202 and the circular arc curvature of arc surface 3 1203 are greater than the curvature of arc surface 1.Adopt in the magneto of this rotor, the circumferencial direction of the peristome of air-gap length from the central part of magnetic inductive block to radial groove between each stator tooth and magnetic inductive block increases gradually, smaller value is become as mean value in the length of its air gap of peristome of radial groove, therefore be lowered by the magnetic resistance difference between adjacent two magnetic inductive blocks of air gap, electromagnetic force is the gesture of change because of the consecutive variations of air gap and the reduction of magnetic resistance difference, thus the effective sudden change reducing electromagnetic force, improve the vibration and noise that bring thus.
Above-described is only execution modes more of the present utility model.For the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (7)
1. the rotor structure of magneto, comprise rotor core (1) and some permanent magnets (2), rotor core (1) comprises the annular ring (11) being provided with central shaft hole (100) and the some magnetic inductive blocks (12) protruded from annular ring (11) outside, radial groove (13) is formed between adjacent two magnetic inductive blocks (12), permanent magnet (2) is arranged on radial groove (13) the inside, the both sides magnetic inductive block (12) of the peristome (130) of radial groove (13) protrudes left stop hook (121) and right stop hook (122) respectively, it is characterized in that: the outer arc face (120) of each magnetic inductive block (12) is made up of three sections of arc surfaces, comprise and be positioned at middle one section of arc surface one (1201), lay respectively at arc surface two (1202) and the arc surface three (1203) of arc surface one (1201) both sides.
2. the rotor structure of magneto according to claim 1, is characterized in that: its center of circle of arc surface one (1201) is consistent with the center of circle of rotor core (1).
3. the rotor structure of magneto according to claim 2, is characterized in that: its center of circle of arc surface two (1202) is consistent with the center of circle of arc surface three (1203).
4. the rotor structure of magneto according to claim 3, is characterized in that: arc surface two (1202) is all the center of circle one segment distance radially departing from rotor core (1) with the center of circle of arc surface three (1203).
5. the rotor structure of the magneto according to claim 1 or 2 or 3 or 4, is characterized in that: arc surface two (1202) is symmetrical along the radial center of extension line of corresponding magnetic inductive block (12) with arc surface three (1203).
6. the rotor structure of magneto according to claim 5, is characterized in that: arc surface two (1202) and arc surface one (1201), arc surface three (1203) are inscribed circle relation or circumcircle relation with arc surface one (1201).
7. the rotor structure of the magneto according to claim 1 or 2 or 3 or 4, is characterized in that: in the middle of the bottom of radial groove (13), be provided with boss (14), the medial surface of permanent magnet (2) is bearing on the end face of boss (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437247.XU CN204906033U (en) | 2015-06-24 | 2015-06-24 | Permanent -magnet machine's rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437247.XU CN204906033U (en) | 2015-06-24 | 2015-06-24 | Permanent -magnet machine's rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906033U true CN204906033U (en) | 2015-12-23 |
Family
ID=54928179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520437247.XU Expired - Fee Related CN204906033U (en) | 2015-06-24 | 2015-06-24 | Permanent -magnet machine's rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204906033U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208587A (en) * | 2016-09-26 | 2016-12-07 | 威灵（芜湖）电机制造有限公司 | Rotor core, rotor and self-starting permanent magnet synchronous motor |
| CN107231074A (en) * | 2016-03-25 | 2017-10-03 | 法雷奥电机设备公司 | Electric rotating machine with the construction for minimizing torque ripple |
-
2015
- 2015-06-24 CN CN201520437247.XU patent/CN204906033U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231074A (en) * | 2016-03-25 | 2017-10-03 | 法雷奥电机设备公司 | Electric rotating machine with the construction for minimizing torque ripple |
| US10574102B2 (en) | 2016-03-25 | 2020-02-25 | Valeo Equipments Electriques Moteur | Rotary electrical machine with configuration minimizing torque undulations |
| CN106208587A (en) * | 2016-09-26 | 2016-12-07 | 威灵（芜湖）电机制造有限公司 | Rotor core, rotor and self-starting permanent magnet synchronous 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 |
Granted publication date: 20151223 Termination date: 20160624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |