CN204886462U - Permanent -magnet machine's rotor - Google Patents
Permanent -magnet machine's rotor Download PDFInfo
- Publication number
- CN204886462U CN204886462U CN201520492637.7U CN201520492637U CN204886462U CN 204886462 U CN204886462 U CN 204886462U CN 201520492637 U CN201520492637 U CN 201520492637U CN 204886462 U CN204886462 U CN 204886462U
- Authority
- CN
- China
- Prior art keywords
- rotor
- stop hook
- radial groove
- medial surface
- magnetic inductive
- 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
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- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a permanent -magnet machine's rotor, which comprises a rotor core and a plurality of permanent magnets, the rotor core comprises the components of: an annular ring which is provided with a central shaft hole, and a plurality of magnet -conductive blocks which project from outside of the annular ring, a radial groove is formed between two adjacent magnet -conductive blocks, the permanent magnets are mounted in the radial grooves, a left stop hook and a right stop hook respectively project from the magnet -conductive blocks at two sides of an opening of each radial groove, the medial surface of left side stop hook and right stop hook is the wave, corrugated medial surface compresses tightly on the lateral surface of permanent magnet, a structure is simple, torque ripple and tooth's socket torque are little, the rotor rotates steadily.
Description
Technical field
The utility model relates to a kind of rotor of magneto, belongs to technical field of motors.
Background technology
Motor is widely used in the various electric equipments of industrial production and life, and existing motor has stator and rotor, and rotating shaft is installed in the rotor and rotate with the rotation of rotor, and outputting power thus.Divide by the position relationship of rotor and stator, existing motor is divided into inner rotor type motor and external rotor electric machine formula motor, and the rotor of inner rotor type motor is arranged in stator, and external rotor electric machine is then that stator is arranged in rotor.
Usually, inner rotor type motor has housing and is positioned at the end cap at housing two ends, and housing and end cap surround a cavity, and stator and rotor are arranged in cavity, and stator has stator core and is wrapped in the stator winding on stator core.The middle part of stator has rotor installing hole, and rotor is arranged in rotor installing hole, and can rotate relative to stator.Rotating shaft is arranged in rotor, and with rotor interference fit.
Magneto belongs to the one in inner rotor type motor, but the current following Railway Project of permanent magnet machine rotor ubiquity:
1) torque pulsation of existing permanent magnet machine rotor and cogging torque large, rotor turns is not steady.
2) Distribution of Magnetic Field of rotor core is uneven, and the operational efficiency of rotor is low.
3) the back electromotive force fluctuation that produces of rotor core is large, cause rotor turns not steadily, noise is large.
Utility model content
Main purpose of the present utility model is the rotor providing a kind of magneto, and its structure is simple, torque pulsation and cogging torque little, rotor turns is steady.
Above-mentioned purpose is achieved by the following technical solution:
A kind of rotor 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, and the medial surface of left stop hook and right stop hook is waveform, and corrugated medial surface is pressed on the lateral surface of permanent magnet.
The medial surface of above-mentioned left stop hook and right stop hook is the waveform of crest and the change of wavelength rule.
The peristome width of above-mentioned radial groove is between 1.8mm to 2.8mm.
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 quantity of above-mentioned magnetic inductive block is 10, and 10 magnetic inductive blocks are circumferentially uniformly distributed at interval.
The radial center of extension line of above-mentioned radial groove is through its peristome.
The utility model compared with prior art tool has the following advantages:
1) medial surface of left stop hook and right stop hook is waveform, corrugated medial surface is pressed on the lateral surface of permanent magnet, the magnetic field line distribution of permanent magnet lateral surface is guided by corrugated medial surface, the magnetic field line passed from the peristome of radial groove is uniformly distributed, and then the magnetic resistance difference between adjacent two magnetic inductive blocks is lowered, electromagnetic force is the gesture of change because of the reduction of magnetic resistance difference, thus effectively reduces torque pulsation and cogging torque, improves the vibration and noise that bring thus.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment rotor;
Fig. 2 is the enlarged drawing of part A in Fig. 1.
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 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 110 and 10 magnetic inductive blocks 12 protruded outside annular ring 11, 10 magnetic inductive blocks 12 are circumferentially uniformly distributed at interval, 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, and 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.
Rotor core 1 is sleeved in rotating shaft by central shaft hole 110, central shaft hole 110 is provided with keyway 1101, for by key by rotor core 1 and rotating shaft relative positioning.Rotating shaft can arrange the keyway corresponding with keyway 1101, and rotor core 1 is located by key and rotating shaft when mounted, can ensure accuracy and the fastness of installation, thus ensure that the normal operation of motor, improve the quality of motor.
Preferably, peristome 130 width of radial groove 13 is between 1.8mm to 2.8mm.
Magneto there are vibrations and noise components reason is because there is cogging torque, needs to reduce even to eliminate cogging torque to reduce vibrations and the noise of motor existence for this reason.Magneto rotor is relative to stator rotary motion, flux guide part between the armature tooth of the polar arc part corresponding with magnetic inductive block and magnetic inductive block remains unchanged substantially, therefore these magnetic fields around armature tooth also remain unchanged substantially, and in a bit of region corresponding to the side of adjacent two magnetic inductive blocks, the i.e. peristome 130 of radial groove 13, the change of its magnetic conductance very greatly.The utility model is by being all set to waveform the medial surface 120 of left stop hook 121 and right stop hook 122, corrugated medial surface 120 is pressed on the lateral surface 20 of permanent magnet 2, the magnetic field line distribution of permanent magnet lateral surface is guided by corrugated medial surface, the magnetic field line passed from the peristome of radial groove is uniformly distributed, and then the magnetic resistance difference between adjacent two magnetic inductive blocks is lowered, electromagnetic force is the gesture of change because of the reduction of magnetic resistance difference, thus effectively reduce torque pulsation and cogging torque, improve the vibration and noise that bring thus.
Simultaneously, the medial surface 120 of left stop hook 121 and right stop hook 122 is the waveform of crest and the change of wavelength rule, the peristome 130 of crest from the side of magnetic inductive block 12 toward radial groove 13 becomes greatly gradually, and the peristome 130 of wavelength from the side of magnetic inductive block 12 toward radial groove 13 shortens gradually.By medial surface 120 structure of appropriate design stop hook, guiding magnetic field distributes, and makes Distribution of Magnetic Field even, thus reduces back electromotive force fluctuation, makes rotor under the requirement meeting torque pulsation and cogging torque, stability of rotation, efficient.
In the utility model, the medial surface 120 of described left stop hook 121 and right stop hook 122 is all set to waveform, thus torque ripple reduction and cogging torque, improve the vibration and noise that bring thus.But as those skilled in the art, can associate easily and change is made to medial surface 120 shape of left stop hook 121 and right stop hook 122, such as can its zigzag or stairstepping etc.In this statement, 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.
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 (6)
1. the rotor of a magneto, comprise rotor core (1) and some permanent magnets (2), rotor core (1) comprises the annular ring (11) being provided with central shaft hole (110) 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 medial surface (120) of left stop hook (121) and right stop hook (122) is waveform, corrugated medial surface (120) is pressed on the lateral surface (20) of permanent magnet (2).
2. the rotor of a kind of magneto according to claim 1, is characterized in that: the medial surface (120) of left stop hook (121) and right stop hook (122) is the waveform of crest and the change of wavelength rule.
3. the rotor of a kind of magneto according to claim 2, is characterized in that: peristome (130) width of described radial groove (13) is between 1.8mm to 2.8mm.
4. the rotor of a kind of magneto according to claim 1 or 2 or 3, 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).
5. the rotor of a kind of magneto according to claim 1 or 2 or 3, is characterized in that: the quantity of magnetic inductive block (12) is 10, and 10 magnetic inductive blocks (12) are circumferentially uniformly distributed at interval.
6. the rotor of a kind of magneto according to claim 1 or 2 or 3, is characterized in that: the radial center of extension line of described radial groove (13) is through its peristome (130).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492637.7U CN204886462U (en) | 2015-07-10 | 2015-07-10 | Permanent -magnet machine's rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492637.7U CN204886462U (en) | 2015-07-10 | 2015-07-10 | Permanent -magnet machine's rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886462U true CN204886462U (en) | 2015-12-16 |
Family
ID=54830783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520492637.7U Expired - Fee Related CN204886462U (en) | 2015-07-10 | 2015-07-10 | Permanent -magnet machine's rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204886462U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932804A (en) * | 2016-06-20 | 2016-09-07 | 广东威灵电机制造有限公司 | Rotor for motor and motor with rotor |
| CN111668953A (en) * | 2020-06-15 | 2020-09-15 | 常州高尔登科技有限公司 | Rotor and in-wheel motor |
| CN111863376A (en) * | 2020-08-18 | 2020-10-30 | 东阳市瑟达磁业有限公司 | Unbreakable neodymium-iron-boron magnet and preparation method thereof |
-
2015
- 2015-07-10 CN CN201520492637.7U patent/CN204886462U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932804A (en) * | 2016-06-20 | 2016-09-07 | 广东威灵电机制造有限公司 | Rotor for motor and motor with rotor |
| CN111668953A (en) * | 2020-06-15 | 2020-09-15 | 常州高尔登科技有限公司 | Rotor and in-wheel motor |
| CN111863376A (en) * | 2020-08-18 | 2020-10-30 | 东阳市瑟达磁业有限公司 | Unbreakable neodymium-iron-boron magnet and preparation method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160710 |