CN202488239U - Permanent magnetic direct current motor rotor - Google Patents
Permanent magnetic direct current motor rotor Download PDFInfo
- Publication number
- CN202488239U CN202488239U CN2011203726106U CN201120372610U CN202488239U CN 202488239 U CN202488239 U CN 202488239U CN 2011203726106 U CN2011203726106 U CN 2011203726106U CN 201120372610 U CN201120372610 U CN 201120372610U CN 202488239 U CN202488239 U CN 202488239U
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- CN
- China
- Prior art keywords
- rotor core
- permanent magnets
- permanent
- direct current
- dovetail 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 - Lifetime
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A permanent magnetic direct current motor rotor relates to a motor rotor. In the structure of a current permanent magnetic direct current motor rotor, permanent magnets are connected with a rotor core through gluing with glue, or the outer arcs of the permanent magnets are wound by a weftless tape to fix, the positioning of the permanent magnets is difficult, the non-uniform distribution of the permanent magnets may be caused, the permanent magnets are likely to be disengaged from the rotor core, and the safety hidden troubles of motor deadlocking and the like exist. The permanent magnetic direct current motor rotor comprises the rotor core and the permanent magnets positioned in the periphery of the rotor core. The permanent magnetic direct current motor rotor is characterized in that: the periphery of the rotor core is provided with an even number of dovetail grooves cooperating with the permanent magnets, and the outer side groove width of the dovetail grooves is less than the inner side groove width of the dovetail grooves. The dovetail grooves fix the permanent magnets in the grooves, so that the permanent magnets can be fast and accurately positioned and generate no displacement, and the possibility that the permanent magnets are likely to be loosened or disengaged is avoided in the high-temperature high-speed operation of the direct current motor, so that the reliability of the direct current motor is greatly improved.
Description
Technical field
The utility model relates to a kind of rotor.
Background technology
Permanent magnet in the rotor structure of existing permanent magnet DC motor is connected through the glue adhesive bonding method with rotor core; Or the permanent magnet external arc is fastened with no latitude band, and the permanent magnet location difficulty possibly cause the permanent magnet skewness; And because motor rotation can make motor temperature raise; And glue can reduce by viscous force even viscous force lost efficacy, and no latitude band also can be reduced by the high temperature back pull significantly, and motor permanent magnet in the running has outside action of centrifugal force; Break away from easily rotor core, have potential safety hazards such as motor is stuck.
The utility model content
The technical problem that the utility model will solve and the technical assignment of proposition are that the prior art scheme is improved and improved, and a kind of permanent direct-current electric machine rotor is provided, to reach permanent magnet accurate positioning, reliable purpose.For this reason, the utility model is taked following technical scheme.
A kind of permanent direct-current electric machine rotor comprises rotor core and is positioned at the permanent magnet of rotor core periphery, it is characterized in that: described rotor core periphery is provided with the dovetail groove that even number and permanent magnet match, and the outside groove width of dovetail groove is less than its inboard groove width.Dovetail groove is stuck in permanent magnet in the groove, and the permanent magnetism physical efficiency is located fast and accurately, does not produce displacement, avoided direct current machine at high temperature, run up down, the loosening easily or possibility that comes off of permanent magnet, thus improved the reliability of direct current machine greatly.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature.
Described dovetail groove groove bottom is the arc surface concentric with the rotor core outer circumference surface, and the two sides of dovetail groove and groove bottom and permanent magnet are fitted.Permanent magnet and dovetail groove bottom land are reliably fitted, increase contact area.
Be provided with the axially movable tack coat of magnetic shoe when being used to prevent the motor high speed rotating between described dovetail groove and the permanent magnet.Increase the adhesion of permanent magnet and dovetail groove.
Described rotor core is provided with the through hole that is uniformly distributed with at circumferencial direction more than 3.Reduce moment of inertia, guarantee the stationarity of rotating simultaneously.
Described number of openings is identical with dovetail groove quantity or inequality, and through hole is located on the inboard rotor core of dovetail groove.
Described through hole is rounded, waist shape or the band rounding triangle.Far away more from the rotor core center, girth is long more, and the leg-of-mutton through hole of band rounding guarantees the intensity of rotor core.
Beneficial effect: dovetail groove is stuck in permanent magnet in the groove; The permanent magnetism physical efficiency is located fast and accurately, does not produce displacement, avoided direct current machine at high temperature, run up down; The easily loosening or possibility that comes off of permanent magnet, thus the reliability of direct current machine improved greatly.
Description of drawings
Fig. 1 is the utility model permanent direct-current electric machine rotor general structure sketch map.
Fig. 2 is the A-A sectional structure sketch map of Fig. 1.
Fig. 3 is the utility model rotor core structure sketch map.
Fig. 4 is the utility model magnet structure sketch map.
Among the figure: 1-rotor core; The 2-permanent magnet; The 3-dovetail groove, the 4-through hole.
Embodiment
Below in conjunction with Figure of description the technical scheme of the utility model is done further detailed description.
Like Fig. 1,2,3, shown in 4, the utility model comprises rotor core 1 and is positioned at the permanent magnet 2 of rotor core 1 periphery, and described rotor core 1 periphery is provided with the dovetail groove 3 that even number and permanent magnet 2 match, and the outside groove width of dovetail groove 3 is less than its inboard groove width.Described dovetail groove 3 groove bottom are and the concentric arc surface of rotor core 1 outer circumference surface that the two sides of dovetail groove 3 and groove bottom and permanent magnet 2 are fitted.
For increasing the adhesion between dovetail groove 3 and the permanent magnet 2, be provided with the axially movable tack coat of magnetic shoe when being used to prevent the motor high speed rotating between described dovetail groove 3 and the permanent magnet 2.
For reducing the rotator inertia of rotor core 1, reduce the weight of rotor core 1, rotor core 1 is provided with the through hole 4 that is uniformly distributed with at circumferencial direction more than 3.Through hole 4 quantity are identical with dovetail groove 3 quantity also can be different, and in Fig. 2, through hole 4 quantity are identical with dovetail groove 3 quantity, and through hole 4 is located on the rotor core 1 of dovetail groove 3 inboards.Through hole is 4 rounded, the triangle of waist shape or band rounding etc.
When assembling, permanent magnet 2 grafting are gone in the dovetail groove 3, and blended rubber water bonding is fixing.
The specific embodiment that a kind of permanent direct-current electric machine rotor shown in above Fig. 1-4 is the utility model; The utility model substantive distinguishing features and progress have been embodied; Can be according to the use needs of reality; Under the enlightenment of the utility model, it is carried out the equivalent modifications of aspects such as shape, structure, all at the row of the protection range of this programme.
Claims (6)
1. permanent direct-current electric machine rotor; Comprise rotor core (1) and be positioned at the permanent magnet (2) of rotor core (1) periphery; It is characterized in that: described rotor core (1) periphery is established the dovetail groove (3) that even number and permanent magnet (2) match, and the outside groove width of dovetail groove (3) is less than its inboard groove width.
2. a kind of permanent direct-current electric machine rotor according to claim 1; It is characterized in that: described dovetail groove (3) groove bottom is and the concentric arc surface of rotor core (1) outer circumference surface that the two sides of dovetail groove (3) and groove bottom and permanent magnet (2) are fitted.
3. a kind of permanent direct-current electric machine rotor according to claim 2 is characterized in that: be provided with the axially movable tack coat of magnetic shoe when being used to prevent the motor high speed rotating between described dovetail groove (3) and the permanent magnet (2).
4. a kind of permanent direct-current electric machine rotor according to claim 3 is characterized in that: described rotor core (1) is provided with the through hole (4) that is uniformly distributed with at circumferencial direction more than 3.
5. a kind of permanent direct-current electric machine rotor according to claim 4 is characterized in that: described through hole (4) quantity is identical or inequality with dovetail groove (3) quantity, and through hole (4) is located on the inboard rotor core (1) of dovetail groove (3).
6. a kind of permanent direct-current electric machine rotor according to claim 5 is characterized in that: described through hole (4) is rounded, waist shape or the band rounding triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203726106U CN202488239U (en) | 2011-09-28 | 2011-09-28 | Permanent magnetic direct current motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203726106U CN202488239U (en) | 2011-09-28 | 2011-09-28 | Permanent magnetic direct current motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488239U true CN202488239U (en) | 2012-10-10 |
Family
ID=46962628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203726106U Expired - Lifetime CN202488239U (en) | 2011-09-28 | 2011-09-28 | Permanent magnetic direct current motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202488239U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143868A (en) * | 2013-05-09 | 2014-11-12 | 上海电气集团上海电机厂有限公司 | Magnetic steel arrangement structure of rotor of high-power and high-speed permanent magnet motor |
| CN106253520A (en) * | 2016-08-16 | 2016-12-21 | 山西北方机械制造有限责任公司 | A kind of multipole direct-drive permanent magnet synchronous motor rotor structure device |
| CN107124052A (en) * | 2016-02-24 | 2017-09-01 | 发那科株式会社 | The rotor and its manufacture method of motor |
| CN108011461A (en) * | 2017-12-27 | 2018-05-08 | 浙江伟康电机有限公司 | A kind of low voltage DC motor for retractable door |
| CN111030329A (en) * | 2019-11-29 | 2020-04-17 | 北京自动化控制设备研究所 | Multi-phase permanent magnet fault-tolerant servo motor |
-
2011
- 2011-09-28 CN CN2011203726106U patent/CN202488239U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143868A (en) * | 2013-05-09 | 2014-11-12 | 上海电气集团上海电机厂有限公司 | Magnetic steel arrangement structure of rotor of high-power and high-speed permanent magnet motor |
| CN107124052A (en) * | 2016-02-24 | 2017-09-01 | 发那科株式会社 | The rotor and its manufacture method of motor |
| CN107124052B (en) * | 2016-02-24 | 2019-09-06 | 发那科株式会社 | The rotor and its manufacturing method of motor |
| US10476359B2 (en) | 2016-02-24 | 2019-11-12 | Fanuc Corporation | Motor rotor and method for manufacturing the same |
| CN106253520A (en) * | 2016-08-16 | 2016-12-21 | 山西北方机械制造有限责任公司 | A kind of multipole direct-drive permanent magnet synchronous motor rotor structure device |
| CN108011461A (en) * | 2017-12-27 | 2018-05-08 | 浙江伟康电机有限公司 | A kind of low voltage DC motor for retractable door |
| CN111030329A (en) * | 2019-11-29 | 2020-04-17 | 北京自动化控制设备研究所 | Multi-phase permanent magnet fault-tolerant servo motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 No. 1801 Renmin West Road, Shaoxing, Zhejiang, Shangyu Co-patentee after: Zhejiang Wolong Household Electric Machinery Co., Ltd. Patentee after: Wolong Electric Drive Group Co., Ltd. Address before: 312300 No. 1801 Renmin West Road, Shaoxing, Zhejiang, Shangyu Co-patentee before: Zhejiang Wolong Household Electric Machinery Co., Ltd. Patentee before: Wolong Electric Group Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |