CN204906033U - Permanent -magnet machine's rotor structure - Google Patents

Permanent -magnet machine's rotor structure Download PDF

Info

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
Authority
CN
China
Prior art keywords
arc surface
center
circle
rotor
radial groove
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 - Fee Related
Application number
CN201520437247.XU
Other languages
Chinese (zh)
Inventor
周子欣
潘旺
唐炜琳
廖怡璇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201520437247.XU priority Critical patent/CN204906033U/en
Application granted granted Critical
Publication of CN204906033U publication Critical patent/CN204906033U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (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

The rotor structure of magneto
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).
CN201520437247.XU 2015-06-24 2015-06-24 Permanent -magnet machine's rotor structure Expired - Fee Related CN204906033U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN104882978B (en) A kind of low torque ripple high efficiency permanent magnet motor stator and rotor structure
CN103730997B (en) A kind of excitation integrated form brushless synchronous machine
CN204156618U (en) Brushless electric machine
CN104702002A (en) Rotating electric machine
CN204168098U (en) Permanent-magnetic synchronous motor rotor
CN102355108B (en) High-quality three-phase alternating current permanent magnet servo synchronous motor
CN103929033A (en) Permanent magnet synchronous motor rotor structure with arched permanent magnet
CN203632387U (en) Motor rotor
CN202145610U (en) Permanent Magnet Synchronous Motor
CN104753213A (en) Permanent-magnet DC brushless motor
CN204906033U (en) Permanent -magnet machine's rotor structure
CN202395540U (en) High-quality three-phase AC permanent magnetic servo synchronous motor
CN204465161U (en) A kind of single-phase transverse flux machine
CN204886462U (en) Permanent -magnet machine's rotor
CN102790502B (en) Permanent magnet synchronous motor
CN104184284A (en) Double-magnetic-circuit asynchronous-starting permanent magnet synchronous motor rotor
CN102244446A (en) Permanent magnet synchronism motor (PMSM)
CN105071570A (en) V-shaped rotor structure and built-in permanent-magnetism motor with V-shaped rotor structure
CN102522835B (en) Brushless direct current permanent magnet motor having characteristics of low noise, low vibration and low temperature rise and assembly technology thereof
CN102664475A (en) Low-fluctuation built-in permanent magnet rotor for brushless motor
CN203660842U (en) AC generator exciter
CN204794423U (en) Permanent magnet motor rotor
US20190140494A1 (en) Electric motor with low cogging torque
CN203872019U (en) Efficient DC permanent magnet motor
CN104600937B (en) Synchronous magnetic resistance motor

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