CN215528727U - Mounting structure of permanent magnet in double-stator permanent magnet motor and motor - Google Patents
Mounting structure of permanent magnet in double-stator permanent magnet motor and motor Download PDFInfo
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- CN215528727U CN215528727U CN202122309984.XU CN202122309984U CN215528727U CN 215528727 U CN215528727 U CN 215528727U CN 202122309984 U CN202122309984 U CN 202122309984U CN 215528727 U CN215528727 U CN 215528727U
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- 230000005389 magnetism Effects 0.000 claims description 24
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The utility model provides a mounting structure of a permanent magnet in a double-stator permanent magnet motor and the motor, belonging to the technical field of motor equipment and comprising: the rotor comprises a rotor body, an inner permanent magnet, an outer permanent magnet and pole shoes, wherein the pole shoes are distributed on the outer side of the rotor body along the circumferential direction of the rotor body, clamping grooves extending along the axial direction of the rotor body are formed in the side faces of the pole shoes, the outer permanent magnet is located between the two pole shoes, and the outer permanent magnet is clamped and fixed on the rotor body by the two adjacent pole shoes through the clamping grooves. According to the mounting structure of the permanent magnet in the double-stator permanent magnet motor and the motor, the pole shoes are fixedly mounted on the outer side of the rotor body along the circumferential direction of the rotor body, the clamping grooves extending along the axial direction of the rotor body are formed in the side faces of the pole shoes, the outer layer permanent magnet is clamped and fixed on the rotor body by the two adjacent pole shoes through the clamping grooves, the outer layer permanent magnet is fixed in the clamping grooves in an embedded mode, so that the outer layer permanent magnet is conveniently mounted, and the assembly efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of motor equipment, and particularly relates to a mounting structure of a permanent magnet in a double-stator permanent magnet motor and a motor adopting the mounting structure of the permanent magnet in the double-stator permanent magnet motor.
Background
The double-stator permanent magnet motor comprises a base, wherein an inner stator, an outer stator and a rotor are arranged in the base, the outer stator is wrapped outside the inner stator, the rotor is arranged between the inner stator and the outer stator, and energy exchange gaps are reserved among the rotor, the inner stator and the outer stator; the rotor is of a cylindrical structure, an inner layer permanent magnet is arranged on the inner wall of the rotor, and an outer layer permanent magnet is arranged on the outer wall of the rotor; compared with the traditional single-stator motor, the double-stator permanent magnet motor can more fully utilize the internal space of the motor under the condition of certain outer diameter, and realizes higher power density and higher efficiency. However, the permanent magnet in the existing double-stator permanent magnet motor has the problem of inconvenient installation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a mounting structure of a permanent magnet in a double-stator permanent magnet motor, and aims to solve the problem that the permanent magnet in the existing double-stator permanent magnet motor is inconvenient to mount.
In order to achieve the purpose, the utility model adopts the technical scheme that: provided is a mounting structure of a permanent magnet in a double-stator permanent magnet motor, including: the permanent magnet clamping device comprises a rotor body, an inner permanent magnet and an outer permanent magnet, wherein the inner permanent magnet and the outer permanent magnet are respectively positioned on the inner side and the outer side of the rotor body, the permanent magnet clamping device is characterized by further comprising pole shoes which are distributed on the outer side of the rotor body along the circumferential direction of the rotor body, clamping grooves extending along the axial direction of the rotor body are formed in the side faces of the pole shoes, the outer permanent magnet is positioned between the two pole shoes, and the outer permanent magnet is clamped and fixed on the rotor body by the two adjacent pole shoes through the clamping grooves.
In one possible implementation, the outer layer permanent magnets are arranged in a radial direction of the rotor body.
In one possible embodiment, the pole shoes are connected to the rotor body by fastening screws.
In a possible implementation manner, the pole shoe is provided with a counter bore for mounting the fastening screw.
In a possible implementation manner, the pole shoe faces the inner layer permanent magnet, and the fastening screw penetrates through the rotor body and is in threaded connection with the outer layer permanent magnet.
In a possible implementation manner, an adjusting gasket is installed in the clamping groove.
In a possible implementation manner, the mounting structure of the permanent magnet in the double-stator permanent magnet motor further includes limiting rings, and the limiting rings are fixedly mounted at two ends of the pole shoe along the axial direction of the rotor body and used for limiting the movement of the outer layer permanent magnet along the axial direction of the rotor body.
In one possible implementation, the rotor body comprises a rotor yoke and a magnetism isolating ring; the magnetism isolating ring is sleeved on the outer side of the rotor magnetic yoke and is relatively fixed with the rotor magnetic yoke; the inner layer permanent magnet is fixedly arranged on the inner side of the rotor magnetic yoke, and the pole shoe and the outer layer permanent magnet are fixed on the outer side of the magnetism isolating ring.
In a possible implementation manner, a connecting plate is installed between the rotor magnetic yoke and the magnetism isolating ring, and the connecting plate is fixedly installed at two axial ends of the rotor magnetic yoke and the magnetism isolating ring.
Compared with the prior art, the scheme shown in the embodiment of the application has the advantages that the pole shoes are fixedly arranged on the outer side of the rotor body along the circumferential direction of the rotor body, the clamping grooves extending along the axial direction of the rotor body are formed in the side faces of the pole shoes, the outer permanent magnet is positioned between the two pole shoes and placed in the clamping grooves, the outer permanent magnet is clamped and fixed on the rotor body by the two adjacent pole shoes through the clamping grooves, the outer permanent magnet is fixed in the clamping grooves in an embedded mode, so that the outer permanent magnet is conveniently installed, and the assembly efficiency is improved.
Another object of the present invention is to provide an electric machine including the mounting structure of the permanent magnet in any one of the above-described double-stator permanent magnet electric machines.
Compared with the prior art, the scheme shown in the embodiment of the application has the advantages that the installation structure of the permanent magnet in the motor comprises the following components: the rotor comprises a rotor body, an inner permanent magnet and an outer permanent magnet, wherein pole shoes are fixedly arranged on the outer side of the rotor body along the circumferential direction of the rotor body, clamping grooves extending along the axial direction of the rotor body are formed in the side faces of the pole shoes, the outer permanent magnet is positioned between the two pole shoes and placed in the clamping grooves, the outer permanent magnet is clamped and fixed on the rotor body by the two adjacent pole shoes through the clamping grooves, the outer permanent magnet is fixed in the clamping grooves in an embedded mode, the outer permanent magnet is conveniently installed, and the assembling efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a cross-sectional view of a motor according to an embodiment of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a cross-sectional view of a mounting structure of permanent magnets in a double-stator permanent magnet motor according to a second embodiment of the present invention;
fig. 4 is a schematic view of an installation structure of an outer permanent magnet according to a third embodiment of the present invention;
fig. 5 is a schematic view of an installation structure of permanent magnets in a double-stator permanent magnet motor according to a fourth embodiment of the present invention.
In the figure: 1. a rotor body; 101. a rotor yoke; 102. a magnetism isolating ring; 103. a connecting plate; 2. an inner permanent magnet; 3. an outer permanent magnet; 4. a pole shoe; 401. a clamping groove; 402. fastening screws; 403. a counter bore; 404. adjusting the gasket; 5. a limiting ring; 6. an outer stator; 7. an inner stator.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 and fig. 2, a description will now be given of a mounting structure of a permanent magnet in a double-stator permanent magnet motor according to the present invention. A mounting structure of permanent magnets in a double-stator permanent magnet motor includes: rotor body 1, inlayer permanent magnet 2 and outer permanent magnet 3 are located rotor body 1's inside and outside both sides respectively, the mounting structure of permanent magnet still includes pole shoe 4 among the two stator permanent-magnet machine, pole shoe 4 distributes in rotor body 1's the outside along rotor body 1's circumference, the centre gripping groove 401 along rotor body 1's axial extension is seted up to pole shoe 4's side, outer permanent magnet 3 is located between two pole shoes 4, two adjacent pole shoes 4 press from both sides outer permanent magnet 3 with the help of centre gripping groove 401 and tightly fix on rotor body 1.
The utility model provides a pair of mounting structure of stator permanent-magnet machine well permanent magnet, compared with the prior art, there is pole shoe 4 in rotor body 1's the outside along its circumference fixed mounting, the centre gripping groove 401 of the axial extension of rotor body 1 is seted up along the side of pole shoe 4, outer permanent magnet 3 is located between two pole shoes 4 and places in centre gripping groove 401, two adjacent pole shoes 4 press from both sides outer permanent magnet 3 with the help of centre gripping groove 401 and press from both sides tightly to be fixed on rotor body 1, adopt to inlay the mode of adorning and fix outer permanent magnet 3 in centre gripping groove 401, in order to conveniently install outer permanent magnet 3, the assembly efficiency is improved.
In this embodiment, the holding groove 401 is a through groove. During the assembly process of the rotor, an operator can fix the pole shoe 4 on the rotor body 1, and then insert the outer permanent magnet 3 into the clamping groove 401 from one side of the clamping groove 401.
In some embodiments, referring to fig. 2, the outer permanent magnets 3 are arranged along the radial direction of the rotor body 1. In this embodiment, the outer permanent magnet 3 and the inner permanent magnet 2 are both strip-shaped, and the length directions of the outer permanent magnet 3 and the inner permanent magnet 2 are both consistent with the axial direction of the rotor body 1. The cross section of the outer permanent magnet 3 is rectangular, and the cross section of the inner permanent magnet 2 is tile-shaped. The inner layer permanent magnet 2 is a surface-mounted permanent magnet which is fixedly connected with the rotor body 1 by glue or screws generally, and the inner layer permanent magnet 2 is arranged along the tangential direction of the rotor body 1. Because the pole shoe 4 is installed on the outer side of the rotor body 1, the installation space of the outer layer permanent magnet 3 is smaller than that of the inner layer permanent magnet 2, so that the outer layer permanent magnet 3 is arranged along the radial direction of the rotor body 1 (namely, the short side of the cross section of the outer layer permanent magnet 3 is just opposite to the rotor body 1) in order to ensure that the outer layer permanent magnet 3 has enough quantity. The clamping grooves 401 are located on two side faces of the pole shoes 4, namely, an outer layer permanent magnet 3 is installed between every two adjacent pole shoes 4, so that the space outside the rotor body 1 can be fully utilized, more outer layer permanent magnets 3 can be assembled outside the rotor body 1, and higher power density is achieved.
In some embodiments, referring to fig. 3, the pole shoes 4 are connected with the rotor body 1 by fastening screws 402. In this embodiment, the pole shoe 4 is fixedly connected to the rotor body 1 by a fastening screw 402, so that the pole shoe 4 can be easily disassembled. The number of the fastening screws 402 is multiple, the fastening screws are evenly arranged along the length direction of the pole shoe 4, and the rotor body 1 is provided with threaded holes which are matched with the fastening screws 402 for installation.
In some embodiments, referring to fig. 3, the pole piece 4 is provided with a counter bore 403 for mounting a fastening screw 402. In this embodiment, the height of the pole shoe 4 is greater than that of the outer permanent magnet 3, and the top surface of the pole shoe 4 is an arc surface protruding outward. Because the pole shoe 4 radially protrudes out of the outer permanent magnet 3 along the rotor body 1, the outer permanent magnet 3 can be protected, and the outer permanent magnet 3 is prevented from colliding in the assembling process. By arranging the counter bore 403 on the pole shoe 4, the fastening screw 402 is prevented from protruding out of the top surface of the pole shoe 4, on one hand, the installation space is saved, the whole structure is more compact, and on the other hand, the fastening screw 402 can be prevented from interfering with other parts on the motor or colliding with the other parts in the assembling process.
In some embodiments, referring to fig. 3, the pole shoe 4 faces the inner permanent magnet 2, and the fastening screw 402 penetrates the rotor body 1 and is screwed with the outer permanent magnet 3. In this embodiment, a through hole for the fastening screw 402 to pass through is formed in the rotor body 1, a threaded hole connected with the fastening screw 402 is correspondingly formed in the inner permanent magnet 2, and the threaded hole is a blind hole, i.e., the threaded hole does not penetrate through the entire inner permanent magnet 2. After the inner permanent magnet 2 is assembled in place, the threaded hole in the inner permanent magnet 2 cannot be observed from the outside, and the attractiveness of the overall structure is improved. By adopting the structure, the number of the required fastening screws 402 is reduced, namely one fastening screw 402 can be used for fixing the pole shoe 4 and the inner layer permanent magnet 2 at the same time, the labor intensity of operators is greatly reduced, and the dismounting efficiency is improved.
In some embodiments, referring to fig. 4, a spacer shim 404 is mounted in the clamping slot 401. In this embodiment, the adjustment washer 404 is fixed to the inner wall of the holding groove 401 by a screw. The adjusting shims 404 with different thickness sizes are replaced to adapt to the installation of the inner permanent magnets 2 with different width sizes, so that the relative stability between the pole shoe 4 and the inner permanent magnets 2 is ensured.
In some embodiments, referring to fig. 5, the mounting structure of the permanent magnet in the double-stator permanent magnet motor further includes a limiting ring 5, and the limiting ring 5 is fixedly mounted at two ends of the pole shoe 4 along the axial direction of the rotor body 1, and is used for limiting the movement of the outer layer permanent magnet 3 along the axial direction of the rotor body 1. In this embodiment, the retainer ring 5 is annular and is disposed coaxially with the rotor body 1. The number of the limiting rings 5 is two, and the two limiting rings are respectively positioned at two ends of the clamping groove 401 in the length direction. The length dimension of the pole shoe 4 is larger than that of the outer permanent magnet 3. Arc grooves for installing the limiting ring 5 are formed in two end faces of the pole shoe 4, the arc grooves play a role in positioning the limiting ring 5, and the limiting ring 5 and the pole shoe 4 are conveniently installed and fixed. The limiting ring 5 is fixedly connected with the pole shoe 4 through a screw. After the limiting ring 5 is installed in place, the inner side surface of the limiting ring 5 is abutted against the side surface of the outer permanent magnet 3 in the length direction, so that the outer permanent magnet 3 is limited in the clamping groove 401, and the outer permanent magnet 3 is prevented from being separated from the clamping groove 401.
In some embodiments, referring to fig. 3 and 5, the rotor body 1 includes a rotor yoke 101 and a magnetism isolating ring 102; the magnetism isolating ring 102 is sleeved on the outer side of the rotor magnetic yoke 101 and is relatively fixed with the rotor magnetic yoke 101; the inner layer permanent magnet 2 is fixedly arranged on the inner side of the rotor magnetic yoke 101, and the pole shoe 4 and the outer layer permanent magnet 3 are fixed on the outer side of the magnetism isolating ring 102. In this embodiment, the rotor yoke 101 and the magnetism isolating ring 102 are both ring-shaped members. The magnetism isolating ring 102 separates the magnetic fields generated by the inner permanent magnet 2 and the outer permanent magnet 3, and avoids interference between the magnetic fields inside and outside the rotor body 1. The rotor magnet yoke 101 and the magnetism isolating ring 102 are of a split structure, so that maintenance and replacement are convenient, and maintenance cost is reduced.
In some embodiments, referring to fig. 5, a connecting plate 103 is installed between the rotor yoke 101 and the magnetism isolating ring 102, and the connecting plate 103 is fixedly installed at two axial ends of the rotor yoke 101 and the magnetism isolating ring 102. In this embodiment, the connecting plate 103 is a rectangular plate and is disposed along the radial direction of the rotor yoke 101 or the magnetism isolating ring 102. The number of the connecting plates 103 is at least two, and the connecting plates are uniformly arranged along the circumferential direction of the rotor yoke 101 or the magnetism isolating ring 102. Two ends of the connecting plate 103 in the length direction are respectively connected with the rotor yoke 101 and the magnetism isolating ring 102 through screws, so that the rotor yoke 101 and the magnetism isolating ring 102 are fixedly connected. The two end faces of the rotor magnetic yoke 101 and the magnetism isolating ring 102 are respectively provided with a groove which is matched and installed with the connecting plate 103, and the connecting plate 103 is contacted with two side walls of the groove, so that the rotor magnetic yoke 101 and the magnetism isolating ring 102 are effectively prevented from rotating relatively, the shearing force applied to the screw is reduced, and the service life of the screw is prolonged.
The utility model also provides a motor which comprises the mounting structure of the permanent magnet in the double-stator permanent magnet motor.
Compared with the prior art, the mounting structure of the permanent magnet in the motor provided by the utility model comprises the following components: rotor body 1, inlayer permanent magnet 2 and outer permanent magnet 3, there are pole shoe 4 in rotor body 1's the outside along its circumference fixed mounting, the centre gripping groove 401 along rotor body 1's axial extension is seted up to the side of pole shoe 4, outer permanent magnet 3 is located between two pole shoes 4 and places in centre gripping groove 401, two adjacent pole shoes 4 press from both sides outer permanent magnet 3 with the help of centre gripping groove 401 and press from both sides tightly to be fixed on rotor body 1, adopt to inlay the mode of adorning and fix outer permanent magnet 3 in centre gripping groove 401, in order to conveniently install outer permanent magnet 3, the assembly efficiency is improved.
In the embodiment, the motor further comprises an outer stator 6 and an inner stator 7, wherein the outer stator 6 and the inner stator 7 are coaxially arranged with the rotor body 1 and are respectively positioned at the outer side and the inner side of the rotor body 1; a dismounting space for dismounting the fastening screw 402 is left between the outer stator 6 and the pole shoe 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A mounting structure of permanent magnets in a double-stator permanent magnet motor includes: the permanent magnet clamping device comprises a rotor body, an inner permanent magnet and an outer permanent magnet, wherein the inner permanent magnet and the outer permanent magnet are respectively positioned on the inner side and the outer side of the rotor body.
2. The structure of claim 1, wherein the outer permanent magnets are arranged in a radial direction of the rotor body.
3. The structure of claim 1, wherein the pole pieces are connected to the rotor body by fastening screws.
4. The mounting structure of permanent magnets in a double-stator permanent magnet motor according to claim 3, wherein counterbores for mounting the fastening screws are provided on the pole shoes.
5. The mounting structure of permanent magnets in a double-stator permanent magnet motor according to claim 4, wherein the pole shoe faces the inner permanent magnet, and the fastening screw penetrates through the rotor body and is in threaded connection with the outer permanent magnet.
6. The structure of claim 1, wherein the spacer is installed in the holding groove.
7. The mounting structure of permanent magnets in a double-stator permanent magnet motor according to claim 1, further comprising limiting rings, wherein the limiting rings are fixedly mounted at two ends of the pole shoe along the axial direction of the rotor body, and are used for limiting the movement of the outer layer permanent magnet along the axial direction of the rotor body.
8. The structure of claim 1, wherein the rotor body includes a rotor yoke and a flux barrier ring; the magnetism isolating ring is sleeved on the outer side of the rotor magnetic yoke and is relatively fixed with the rotor magnetic yoke; the inner layer permanent magnet is fixedly arranged on the inner side of the rotor magnetic yoke, and the pole shoe and the outer layer permanent magnet are fixed on the outer side of the magnetism isolating ring.
9. The structure of claim 8, wherein a connection plate is installed between the rotor yoke and the magnetism isolating ring, and the connection plate is fixedly installed at both axial ends of the rotor yoke and the magnetism isolating ring.
10. An electric machine comprising a mounting structure for permanent magnets in a double stator permanent magnet electric machine according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122309984.XU CN215528727U (en) | 2021-09-23 | 2021-09-23 | Mounting structure of permanent magnet in double-stator permanent magnet motor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122309984.XU CN215528727U (en) | 2021-09-23 | 2021-09-23 | Mounting structure of permanent magnet in double-stator permanent magnet motor and motor |
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| Publication Number | Publication Date |
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| CN215528727U true CN215528727U (en) | 2022-01-14 |
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| CN202122309984.XU Active CN215528727U (en) | 2021-09-23 | 2021-09-23 | Mounting structure of permanent magnet in double-stator permanent magnet motor and motor |
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| CN (1) | CN215528727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115296501A (en) * | 2022-08-30 | 2022-11-04 | 山东大学 | Double-stator single-rotor permanent magnet synchronous motor |
-
2021
- 2021-09-23 CN CN202122309984.XU patent/CN215528727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115296501A (en) * | 2022-08-30 | 2022-11-04 | 山东大学 | Double-stator single-rotor permanent magnet synchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Installation structure of permanent magnet in double stator permanent magnet motor and motor Effective date of registration: 20220507 Granted publication date: 20220114 Pledgee: Bank of China Limited Shijiazhuang Gaocheng sub branch Pledgor: HEBEI NEWSTAR ELECTRIC MOTOR Co.,Ltd. Registration number: Y2022130000030 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230710 Granted publication date: 20220114 Pledgee: Bank of China Limited Shijiazhuang Gaocheng sub branch Pledgor: HEBEI NEWSTAR ELECTRIC MOTOR Co.,Ltd. Registration number: Y2022130000030 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Installation structure and motor of permanent magnet in a dual stator permanent magnet motor Effective date of registration: 20230711 Granted publication date: 20220114 Pledgee: Bank of China Limited Shijiazhuang Gaocheng sub branch Pledgor: HEBEI NEWSTAR ELECTRIC MOTOR Co.,Ltd. Registration number: Y2023980048157 |