CN203883568U - Motor rotor assembly and motor - Google Patents
Motor rotor assembly and motor Download PDFInfo
- Publication number
- CN203883568U CN203883568U CN201420181671.8U CN201420181671U CN203883568U CN 203883568 U CN203883568 U CN 203883568U CN 201420181671 U CN201420181671 U CN 201420181671U CN 203883568 U CN203883568 U CN 203883568U
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- Prior art keywords
- magnet ring
- rear bearing
- rotating shaft
- rotor assembly
- rotor
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Abstract
The utility model is applicable to the technical field of motors, and discloses a motor rotor assembly and a motor. The motor rotor assembly comprises a rotating shaft, a rotor body, a front bearing, a rear bearing and a magnetic ring, wherein the rotor body is arranged at a middle shaft section of the rotating shaft, the front bearing and the rear bearing are arranged at two sides of the rotor body respectively, the magnetic ring and the rear bearing are arranged at the same side of the rotor body, the magnetic ring is provided with a shaft hole in a penetrating mode, the magnetic ring is arranged at an end part of the rotating shaft, the rear bearing is arranged between the rotor body and the magnetic ring, and the shaft hole comprises a sleeving hole portion arranged on the rotating shaft in a sleeved mode and a suspending hole portion arranged in a suspending mode. According to the motor rotor assembly provided by the utility model, magnetization is carried out after the motor rotor assembly is assembled when the magnetic ring is magnetized, thereby ensuring high production efficiency of the motor rotor assembly; and the rear bearing is not surrounded by a coil magnetizing the magnetic ring in the magnetizing process, thereby eliminating a risk that the rear bearing is magnetized in the magnetizing process, and ensuring a low-noise effect and the service life of the motor.
Description
Technical field
The utility model belongs to technical field of motors, relates in particular to a kind of Rotor Assembly and has the motor of this Rotor Assembly.
Background technology
As shown in Figure 3, with follow the tracks of the magnet ring 5 of rotor state and real time position ' Rotor Assembly, generally comprise rotating shaft 1 ' and fixed cover be located at rotating shaft 1 ' on rotor body 2 ', fore bearing 3 ', rear bearing 4 ' and for the magnet ring 5 for Hall element magnetic induction ', wherein, magnet ring 5 ' be generally located at rotor body 2 ' and rear bearing 4 ' between.Give rotor body 2 ' on main magnet and magnet ring 5 ' magnetize be a production process of Rotor Assembly.In conventional art, be all generally rotor body 2 ', fore bearing 3 ', after rear bearing 4 ' and magnet ring 5 ' be all installed on rotating shaft 1 ' upper, more simultaneously to magnet ring 5 ' with rotor body 2 ' main magnet magnetize.The frock 6 ' have of magnetizing two cover coils, a set of coil is to magnet ring 5 ' magnetize, another set of coil to rotor body 2 ' main magnet magnetize.For the accuracy that guarantees that rotor-position is followed the tracks of, magnet ring magnetic field and rotor body main field need keep certain phase relation at circumferencial direction.Because the position of two cover coils is changeless, therefore it is by determining of magnet ring magnetic field and rotor body main field phase relation of the frock 6 that magnetizes ' realize.This conventional solution is being given magnet ring 5 ' while magnetizing, for realize the frock 6 that magnetizes ' with rotating shaft 1 ' concentric locating, magnetize frock 6 ' need with rotating shaft 1 ' end card insert location, like this, magnet ring 5 ' the frock 6 that magnetizes ' need from rotating shaft 1 ' near rear bearing 4 ' end extend to magnet ring 5 ', thereby rear bearing 4 ' be used to is surrounded to the coil of magnet ring 5 ' magnetize, and then make rear bearing 4 ' also in magnet ring 5 ' magnetize in magnetic field, finally cause rear bearing 4 ' also with upper certain magnetic, affected noise and the useful life of motor.
As shown in Figure 4, in order to address the above problem, prior art has proposed a solution: before magnetizing (magnet ring 5 〞 are still located between rotor body 2 〞 and rear bearing), rear bearing is not first installed on rotating shaft 1 〞, after charging magnetic, then rear bearing is installed on rotating shaft 1 〞.This technical scheme rotor body 2 〞, fore bearing 3 〞, rear bearing and the relative installation of magnet ring 5 〞 on rotating shaft 1 〞 are compared with conventional art, different while just magnetizing rear bearing whether be assembled on rotating shaft 1 〞.Because this technical scheme is when magnet ring 5 〞 magnetize, rear bearing is not installed on rotating shaft 1 〞, therefore, magnet ring frock 6 〞 that magnetize do not surround rear bearing, like this, although can effectively prevent magnetic on rear bearing band, because it needs to assemble rear bearing after having magnetized again, therefore it can cause the production efficiency of Rotor Assembly greatly to reduce, do not meet the High-efficient Production requirement of product.
In addition, Rotor Assembly due to above-mentioned conventional art and prior art, its magnet ring is all located between rotor body and rear bearing, and because Hall element is that the motor rear end of being located near rear bearing covers, therefore rear bearing is between magnet ring and Hall element, like this, in order to guarantee that Hall element can sense the magnetic field on magnet ring, just must the external diameter of magnet ring be designed greatlyr than the external diameter of rear bearing, thereby cause the problem that magnet ring volume is large, material cost is high to occur.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of Rotor Assembly is provided and has there is the motor of this Rotor Assembly, its be intended to solve existing Rotor Assembly because structure arranges the unreasonable technical problem that causes simultaneously taking into account motor low noise effect, long life and rotor high efficiency.
For achieving the above object, the technical solution adopted in the utility model is: a kind of Rotor Assembly, comprise rotating shaft, rotor body, fore bearing, rear bearing and magnet ring, described rotor body, described fore bearing, described rear bearing and described magnet ring are all sheathed in described rotating shaft, described rotor body is located on the middle shaft part of described rotating shaft, described fore bearing and described rear bearing are located at respectively the both sides of described rotor body, described magnet ring and described rear bearing are located at the same side of described rotor body, on described magnet ring, run through and are provided with axis hole; Described magnet ring is located at an end of described rotating shaft, described rear bearing is located between described rotor body and described magnet ring, and described axis hole comprises the suit hole portion that is sheathed in described rotating shaft and is unsettled setting and inserts the outstanding hollow hole part of location for the magnetize reference column of frock of magnet ring.
Preferably, the radial dimension of described magnet ring is less than the radial dimension of described rear bearing.
Preferably, described magnet ring is the setting of ladder tubular, and it comprises that the first ladder cylindrical shell and radial dimension are greater than the second ladder cylindrical shell of the radial dimension of described the first ladder cylindrical shell, and described the first ladder cylindrical shell is near described rear bearing.
Preferably, the described suit hole portion of described magnet ring is fixed in described rotating shaft by interference fit.
Preferably, the axial length of described suit hole portion is greater than the axial length of described outstanding hollow hole part.
Preferably, the aperture of described suit hole portion equates with the aperture of described outstanding hollow hole part.
Preferably, described rear bearing is fixed in described rotating shaft by interference fit.
Particularly, described rotor body comprises the rotor core that is sheathed in described rotating shaft, is embedded at main magnet on described rotor core and two and is located at respectively described rotor core both sides for clamping the gimbal of described main magnet and for being fastenedly connected the securing member of gimbal described in two.
Preferably, described securing member is rivet or screw.
The utility model also provides a kind of motor, and it comprises stator, is rotatablely equipped with above-mentioned Rotor Assembly on described stator.
The Rotor Assembly that the utility model provides and have the motor of this rotor assembly, by magnet ring being located to the end of rotating shaft, and is located between rotor body and magnet ring rear bearing; Simultaneously, it is by being made as the axis hole of magnet ring suit hole portion and outstanding hollow hole part two parts, like this, by suit hole portion with can realize the installation of magnet ring in rotating shaft coordinating of rotating shaft and locate, by the card inserting of reference column in outstanding hollow hole part and the frock that magnetizes, close and can realize the concentric locating of frock and magnet ring of magnetizing, thus the uniformity of the rear magnet ring Distribution of Magnetic Field that guaranteed to have magnetized.The Rotor Assembly that the utility model provides, when magnet ring magnetizes, magnetizes after Rotor Assembly has been assembled again, like this, is beneficial to the high efficiency that guarantees Rotor Assembly; And because magnet ring is that end in rotating shaft, rear bearing are between rotor body and magnet ring, therefore, in the process of magnetizing, the coil magnetizing to magnet ring can not surround rear bearing, thereby effectively eliminated the risk that in the process of magnetizing rear bearing exists magnetic, the rear rear bearing that magnetized can be with and be magnetic, and then has effectively guaranteed low noise effect and the useful life of motor.
Accompanying drawing explanation
Fig. 1 is the view before Rotor Assembly that the utility model embodiment provides magnetizes;
Fig. 2 is the structural representation of the Rotor Assembly that provides of the utility model embodiment;
Fig. 3 is the view before Rotor Assembly that conventional art provides magnetizes;
Fig. 4 is the view before Rotor Assembly that prior art provides magnetizes.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, the Rotor Assembly that the utility model embodiment provides, comprise rotating shaft 1, rotor body 2, fore bearing 3, rear bearing 4 and magnet ring 5, rotor body 2, fore bearing 3, rear bearing 4 and magnet ring 5 are all sheathed in rotating shaft 1, rotor body 2 is located on the middle shaft part of rotating shaft 1, fore bearing 3 and rear bearing 4 are located at respectively the both sides of rotor body 2, magnet ring 5 and rear bearing 4 are located at the same side of rotor body 2, on magnet ring 5, run through and be provided with axis hole 50, magnet ring 5 is located at an end of rotating shaft 1, rear bearing 4 is located between rotor body 2 and magnet ring 5, axis hole 50 comprises the suit hole portion 501 being sheathed in rotating shaft 1 and is unsettled setting and inserts the outstanding hollow hole part 502 of location for the magnetize reference column 61 of frock 6 of magnet ring 5.The Hall element (not shown) that magnet ring 5 is installed in back end cover for motor (not shown) for confession is carried out magnetic induction, thereby effectively realizes the real-time detection of Rotor Assembly rotating speed.On magnet ring 5, be set with the setting of hole portion 501, can realize the installation location of magnet ring 5 in rotating shaft 1, the setting of outstanding hollow hole part 502, the reference column 61 that can magnetize in frock 6 for magnet ring inserts location, thereby can close and realize the magnet ring concentric locating of frock 6 and magnet ring 5 of magnetizing by outstanding hollow hole part 502 and the card inserting of reference column 61, and then guarantee the uniformity of magnet ring 5 Distribution of Magnetic Field.The Rotor Assembly that the utility model provides, when magnet ring 5 magnetizes, magnetizes after Rotor Assembly has been assembled again, like this, is beneficial to the high efficiency that guarantees rotor; And because magnet ring 5 is that end in rotating shaft 1, rear bearing 4 are between rotor body 2 and magnet ring 5, therefore, in the process of magnetizing, can not surround rear bearing 4 to the coil that magnet ring 5 magnetizes, like this, effectively eliminated the risk that in the process of magnetizing rear bearing 4 exists magnetic, the rear rear bearing 4 that magnetized can be with and be magnetic, and then has effectively guaranteed low noise effect and the useful life of motor.
Preferably, the radial dimension of magnet ring 5 is less than the radial dimension of rear bearing 4.Due to magnet ring 5 be end, rear bearing 4 in rotating shaft 1 be between rotor body 2 and magnet ring 5, Hall element (not shown) is to be located in the rear end cap (not shown) of motor, therefore there is no the barrier of rear bearing 4 between magnet ring 5 and Hall element, thereby make the radial dimension of magnet ring 5 can design smallerly, even and the radial dimension of magnet ring 5 is less than the radial dimension of rear bearing 4, Hall element still can sense the magnetic field on magnet ring 5.The present embodiment, the radial dimension of magnet ring 5 is designed to such an extent that be less than the radial dimension of rear bearing 4, guaranteeing, under the prerequisite of magnet ring 5 and Hall element magnetic induction function, can to reduce the volume of magnet ring 5, thereby reduced the material usage that magnet ring 5 is manufactured, reduced the manufactured materials cost of magnet ring 5.
Preferably, as depicted in figs. 1 and 2, magnet ring 5 is the setting of ladder tubular, it comprises that the first ladder cylindrical shell 51 and radial dimension are greater than the second ladder cylindrical shell 52 of the radial dimension of the first ladder cylindrical shell 51, the first ladder cylindrical shell 51 is near rear bearing 4, the second ladder cylindrical shell 52 is near Hall element, and the radial dimension of the first ladder cylindrical shell 51 and the second ladder cylindrical shell 52 is all less than the radial dimension of rear bearing 4.Suit hole portion 501 extends and arranges towards the second ladder cylindrical shell 52 along the end near rear bearing 4 of the first ladder cylindrical shell 51, and outstanding hollow hole part 502 extends and arranges towards the first ladder cylindrical shell 51 along the end near Hall element of the second ladder cylindrical shell 52.Because the second ladder cylindrical shell 52 near Hall element setting is mainly used in carrying out magnetic induction for Hall element, therefore, the radial dimension of the second ladder cylindrical shell 52 is arranged greatlyr, the difficulty of Hall element reaction magnetic ring 5 be can reduce, thereby the magnetic induction sensitivity and the magnetic induction precision that has improved Hall element of Hall element improved.And the radial dimension of the first ladder cylindrical shell 51 near rear bearing 4 is designed smallerly, can reduce the volume of magnet ring 5, thereby reduce the manufactured materials consumption of magnet ring 5, and then reduce the manufactured materials cost of magnet ring 5.
Preferably, the suit hole portion 501 of magnet ring 5 is fixed in rotating shaft 1 by interference fit, like this, both can guarantee the solid and reliable property that magnet ring 5 is installed in rotating shaft 1, does not need again to set up extra parts and carries out fastening magnet ring 5.In concrete application, magnet ring 5 can be installed in rotating shaft 1 by special tooling.
Preferably, the axial length of suit hole portion 501 is greater than the axial length of outstanding hollow hole part 502.Due to suit, hole portion 501 is mainly used in coordinating with rotating shaft 1, therefore, the Design of length of suit hole portion 501 is obtained long, can guarantee that magnet ring 5 and rotating shaft 1 have certain length of fit, thereby can guarantee that magnet ring 5 is installed on the reliability in rotating shaft 1.Because outstanding hollow hole part 502 is mainly used in magnetizing for magnet ring 5, to insert location concentric with magnet ring 5 to guarantee magnet ring 5 frock 6 that magnetizes for the reference column 61 of frock 6, therefore, outstanding hollow hole part 502 does not need oversize with the length of fit of reference column 61, in the present embodiment, the axial length of outstanding hollow hole part 502 is designed smallerly (being less than the axial length of suit hole portion 501), can reduce the total length of magnet ring 5, thereby be beneficial to the manufactured materials consumption that reduces magnet ring 5, and then reduce the manufactured materials cost of magnet ring 5.
Preferably, suit hole portion 501 aperture equate with the aperture of outstanding hollow hole part 502, axis hole 50 is a clear opening, like this, axis hole 50 relatively simple for structure, is beneficial to the course of processing of simplifying magnet ring 5, thereby improved the working (machining) efficiency of magnet ring 5, reduced the processing cost of magnet ring 5.Certainly, the suit aperture of hole portion 501 and the aperture of outstanding hollow hole part 502 also can be set to unequal, and axis hole 50 can be designed to a shoulder hole, but can make like this complicated structure of axis hole 50.
Preferably, rear bearing 4 is fixed in rotating shaft 1 by interference fit, like this, both can guarantee the solid and reliable property that rear bearing 4 is installed in rotating shaft 1, does not need again to set up extra parts (as jump ring, the shaft shoulder etc.) and carries out fastening rear bearing 4.In concrete application, rear bearing 4 can be installed in rotating shaft 1 by special tooling.
Preferably, fore bearing 3 is fixed in rotating shaft 1 by interference fit, like this, both can guarantee the solid and reliable property that fore bearing 3 is installed in rotating shaft 1, does not need again to set up extra parts (as jump ring, the shaft shoulder etc.) and carries out fastening fore bearing 3.In concrete application, fore bearing 3 can be installed in rotating shaft 1 by special tooling.
Particularly, as depicted in figs. 1 and 2, rotor body 2 comprises the rotor core 21 that is sheathed in rotating shaft 1, is embedded at main magnet 22 on rotor core 21 and two and is located at respectively rotor core 21 both sides for clamping the gimbal 23 of main magnet 22 and for being fastenedly connected the securing member 24 of two gimbals 23.The setting of two gimbals 23, can be used for compressing main magnet 22, thereby can effectively limit main magnet 22 along the axially movable displacement of rotating shaft 1, like this, effectively guarantee on the one hand the solid and reliable property that main magnet 22 is installed, can guarantee on the other hand the dynamic equilibrium of main field on Rotor Assembly rotation process rotor body 2.
Preferably, securing member 24 is rivet or screw, and securing member 24 is fastenedly connected two gimbals 23 by riveted joint or thread connecting mode.Rivet and screw all have fastening feature reliable, easy for installation; And rivet and screw all can adopt standard component, processing and manufacturing process is easy, be easy to produce in enormous quantities.
Further, as depicted in figs. 1 and 2, on securing member 24, be also arranged with packing ring 25, packing ring 25 specifically can be the combination of faced washer or spring washer or faced washer and spring washer etc., the setting of packing ring 25, can improve the fastening reliability that securing member 24 is connected with gimbal 23 on the one hand, available buffer reduces the pressure size on gimbal 23 on the other hand.
The utility model embodiment also provides a kind of motor, it comprises body (not shown), be located at the stator (not shown) in body, the front end housing (not shown) of being located at respectively body both sides and rear end cap (not shown) and be located at the Hall element (not shown) on rear end cap, on stator, be rotatablely equipped with above-mentioned Rotor Assembly, front end housing is provided with for accommodating the fore bearing chamber of fore bearing 3, rear end cap is provided with for accommodating the rear bearing chamber of rear bearing 4, and the end near fore bearing 3 in rotating shaft 1 is also provided with belt pulley 7.The motor that the utility model provides, owing to having adopted above-mentioned Rotor Assembly, therefore, guaranteeing, under motor low noise and the prerequisite in useful life, can effectively to guarantee the production efficiency of Rotor Assembly.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace or improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. a Rotor Assembly, comprise rotating shaft, rotor body, fore bearing, rear bearing and magnet ring, described rotor body, described fore bearing, described rear bearing and described magnet ring are all sheathed in described rotating shaft, described rotor body is located on the middle shaft part of described rotating shaft, described fore bearing and described rear bearing are located at respectively the both sides of described rotor body, described magnet ring and described rear bearing are located at the same side of described rotor body, on described magnet ring, run through and be provided with axis hole, it is characterized in that: described magnet ring is located at an end of described rotating shaft, described rear bearing is located between described rotor body and described magnet ring, described axis hole comprises the suit hole portion that is sheathed in described rotating shaft and is unsettled setting and inserts the outstanding hollow hole part of location for the magnetize reference column of frock of magnet ring.
2. Rotor Assembly as claimed in claim 1, is characterized in that: the radial dimension of described magnet ring is less than the radial dimension of described rear bearing.
3. Rotor Assembly as claimed in claim 1 or 2, it is characterized in that: described magnet ring is the setting of ladder tubular, it comprises that the first ladder cylindrical shell and radial dimension are greater than the second ladder cylindrical shell of the radial dimension of described the first ladder cylindrical shell, and described the first ladder cylindrical shell is near described rear bearing.
4. Rotor Assembly as claimed in claim 1, is characterized in that: the described suit hole portion of described magnet ring is fixed in described rotating shaft by interference fit.
5. the Rotor Assembly as described in claim 1 or 2 or 4, is characterized in that: the axial length of described suit hole portion is greater than the axial length of described outstanding hollow hole part.
6. the Rotor Assembly as described in claim 1 or 2 or 4, is characterized in that: the aperture of described suit hole portion equates with the aperture of described outstanding hollow hole part.
7. the Rotor Assembly as described in claim 1 or 2 or 4, is characterized in that: described rear bearing is fixed in described rotating shaft by interference fit.
8. the Rotor Assembly as described in claim 1 or 2 or 4, is characterized in that: described rotor body comprises the rotor core that is sheathed in described rotating shaft, be embedded at main magnet on described rotor core and two is located at respectively described rotor core both sides for clamping the gimbal of described main magnet and for being fastenedly connected the securing member of gimbal described in two.
9. Rotor Assembly as claimed in claim 8, is characterized in that: described securing member is rivet or screw.
10. a motor, comprises stator, it is characterized in that: on described stator, be rotatablely equipped with the Rotor Assembly as described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181671.8U CN203883568U (en) | 2014-04-15 | 2014-04-15 | Motor rotor assembly and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181671.8U CN203883568U (en) | 2014-04-15 | 2014-04-15 | Motor rotor assembly and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203883568U true CN203883568U (en) | 2014-10-15 |
Family
ID=51684034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181671.8U Expired - Fee Related CN203883568U (en) | 2014-04-15 | 2014-04-15 | Motor rotor assembly and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203883568U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973002A (en) * | 2014-04-15 | 2014-08-06 | 广东威灵电机制造有限公司 | Motor rotor assembly and motor |
| CN107134895A (en) * | 2016-02-26 | 2017-09-05 | 株式会社牧田 | Electrical equipment |
-
2014
- 2014-04-15 CN CN201420181671.8U patent/CN203883568U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973002A (en) * | 2014-04-15 | 2014-08-06 | 广东威灵电机制造有限公司 | Motor rotor assembly and motor |
| CN103973002B (en) * | 2014-04-15 | 2018-07-13 | 广东威灵电机制造有限公司 | Rotor Assembly and motor |
| CN107134895A (en) * | 2016-02-26 | 2017-09-05 | 株式会社牧田 | Electrical equipment |
| CN107134895B (en) * | 2016-02-26 | 2020-07-14 | 株式会社牧田 | Electric equipment |
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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: 20141015 Termination date: 20200415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |