CN103001355A - Outer rotor of permanent magnet - Google Patents
Outer rotor of permanent magnet Download PDFInfo
- Publication number
- CN103001355A CN103001355A CN 201110273546 CN201110273546A CN103001355A CN 103001355 A CN103001355 A CN 103001355A CN 201110273546 CN201110273546 CN 201110273546 CN 201110273546 A CN201110273546 A CN 201110273546A CN 103001355 A CN103001355 A CN 103001355A
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- Prior art keywords
- magnetic shoe
- permanent magnet
- rotor
- outer rotor
- magnetic shoes
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to the technical field of electrical machines, in particular to an outer rotor of a permanent magnet. The outer rotor of the permanent magnet comprises a rotor casing and magnetic shoes uniformly distributed on the inner circumference of the rotor casing, and an anaerobic glue layer is coated on the contact surfaces of the magnetic shoes and the rotor casing. The outer rotor of the permanent magnet is characterized in that inner-circle distances of gaps between the magnetic shoes are smaller than outer-circle distances of the same, and elastic pieces are clipped in the gaps between the magnetic shoes so as to function in radial limiting and be effectively prevented from exposing from the gaps, so that radial and axial stability of the magnetic shoes are guaranteed, and tensile force for matching between the magnetic shoes and the rotor casing is increased. The outer rotor of the permanent magnet is reasonable in structure, low in cost, and capable of lowering reject ratio of the electrical machines and improving performance of the electrical machines and the like.
Description
Technical field
The present invention relates to technical field of motors, specifically a kind of permanent magnet outer rotor.
Background technology
In the increasingly competitive situation of current electronic product, the performance that improves motor is the important means of enhancing competitiveness, basic as motor power, and the performance of motor plays vital effect.
The structure (as shown in Figure 1) of permanent magnet outer rotor commonly used in the existing motor, it includes rotor case, spring leaf and magnetic shoe, be laid with magnetic shoe on the rotor case inner periphery, the spring leaf that is provided with in its slit between magnetic shoe and the magnetic shoe is connected, the spring leaf undulate, that tensile force by spring leaf cooperates between magnetic shoe and the rotor case, its deficiency: the one, because spring leaf lacks radially spacing, in assembling and use procedure, spring leaf often overflows from the slit, technology difficulty is large, has a strong impact on the performance of motor; The 2nd, because the slit between magnetic shoe and the magnetic shoe is square (as shown in Figure 3), play occurs in the slit of spring leaf between magnetic shoe and magnetic shoe easily, cause the reliability of magnetic shoe to reduce, the electrical fault rate is large.
Summary of the invention
The objective of the invention is to solve above-mentioned the deficiencies in the prior art, a kind of rational in infrastructure, reliability is high, performance good, technique is simple, production cost is low permanent magnet outer rotor is provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of permanent magnet outer rotor, comprise rotor case and be distributed on magnetic shoe on the rotor case inner periphery, the contact-making surface of magnetic shoe and rotor case scribbles the anaerobism glue-line, it is characterized in that the inner circle spacing in slit between magnetic shoe and the magnetic shoe is less than the cylindrical spacing, accompany spring leaf in the slit between magnetic shoe and the magnetic shoe, make spring leaf reach radially spacing effect, prevent that effectively spring leaf from overflowing from the slit.
Magnetic shoe among the present invention and the slit section between the magnetic shoe can be trapezoidal, have guaranteed the radial and axial stability of magnetic shoe, have strengthened the tensile force that magnetic shoe cooperates with rotor case.
The present invention is owing to adopt said structure, spring leaf is limited in the dovetail groove, by the tensile force of spring leaf generation and the viscosity of glue, make the more firm of magnetic shoe and rotor case cooperation, Reliability Enhancement has effectively prevented the radial and axial play of magnetic shoe, also have simultaneously rational in infrastructure, reduce the motor disqualification rate, improve motor performance, the advantage such as production cost is low.
Description of drawings
Fig. 1 is the structural representation of prior art.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the enlarged drawing of A among Fig. 1.
Fig. 4 is the enlarged drawing of B among Fig. 2.
Reference numeral: rotor case 1, magnetic shoe 2, spring leaf 3, anaerobic adhesive 4.
Embodiment
The present invention is further described below in conjunction with accompanying drawing:
As shown in drawings, a kind of permanent magnet outer rotor, comprise rotor case 1 and be distributed on magnetic shoe 2 on rotor case 1 inner periphery, magnetic shoe 2 scribbles anaerobism glue-line 4 with the contact-making surface of rotor case 1, it is characterized in that the inner circle spacing in slit between magnetic shoe 2 and the magnetic shoe 2 less than the cylindrical spacing, accompanies spring leaf 3 in the slit between magnetic shoe 2 and the magnetic shoe 2, the crest number of spring leaf 3 is preferably 2, the trough number is preferably 2, makes spring leaf 3 reach radially spacing effect, prevents that effectively spring leaf from overflowing from the slit.
Magnetic shoe 2 among the present invention and the slit section between the magnetic shoe 2 are trapezoidal, have guaranteed the radial and axial stability of magnetic shoe 2, have strengthened the tensile force that magnetic shoe 2 cooperates with rotor case 1.
The present invention has not only guaranteed the radial and axial stability of magnetic shoe 2 owing to adopt said structure, also have rational in infrastructure, reliably firm, easy for installation, technique simple, the production efficiency advantages of higher.
The present invention is owing to adopt said structure, spring leaf 3 is limited in trapezoidal mouthful, by the tensile force of spring leaf 3 generations and the viscosity of glue, make the more firm of magnetic shoe 2 and rotor case 1 cooperation, Reliability Enhancement has effectively prevented the radial and axial play of magnetic shoe 2, also have simultaneously rational in infrastructure, reduce the motor disqualification rate, improve motor performance, the advantage such as production cost is low.
Claims (2)
1. permanent magnet outer rotor, comprise rotor case and be distributed on magnetic shoe on the rotor case inner periphery, the contact-making surface of magnetic shoe and rotor case scribbles the anaerobism glue-line, it is characterized in that the inner circle spacing in slit between magnetic shoe and the magnetic shoe less than the cylindrical spacing, accompanies spring leaf in the slit between magnetic shoe and the magnetic shoe.
2. a kind of permanent magnet outer rotor according to claim 1 is characterized in that the slit section between magnetic shoe and the magnetic shoe is trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110273546 CN103001355A (en) | 2011-09-15 | 2011-09-15 | Outer rotor of permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110273546 CN103001355A (en) | 2011-09-15 | 2011-09-15 | Outer rotor of permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103001355A true CN103001355A (en) | 2013-03-27 |
Family
ID=47929612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110273546 Pending CN103001355A (en) | 2011-09-15 | 2011-09-15 | Outer rotor of permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103001355A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426303A (en) * | 2013-08-21 | 2015-03-18 | 广东肇庆爱龙威机电有限公司 | Assembling method for permanent magnet direct-current motors and permanent magnet direct-current motor assembled by same |
| CN104638793A (en) * | 2015-03-12 | 2015-05-20 | 成都银河磁体股份有限公司 | Permanent magnet rotor and manufacturing method of permanent magnet rotor |
| WO2018018901A1 (en) * | 2016-07-23 | 2018-02-01 | 中山大洋电机股份有限公司 | External rotor assembly and external rotor electric motor using same |
| CN112564357A (en) * | 2020-11-03 | 2021-03-26 | 超音速智能技术(杭州)有限公司 | Outer rotor single-phase motor |
-
2011
- 2011-09-15 CN CN 201110273546 patent/CN103001355A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426303A (en) * | 2013-08-21 | 2015-03-18 | 广东肇庆爱龙威机电有限公司 | Assembling method for permanent magnet direct-current motors and permanent magnet direct-current motor assembled by same |
| CN104638793A (en) * | 2015-03-12 | 2015-05-20 | 成都银河磁体股份有限公司 | Permanent magnet rotor and manufacturing method of permanent magnet rotor |
| CN104638793B (en) * | 2015-03-12 | 2017-04-19 | 成都银河磁体股份有限公司 | Permanent magnet rotor and manufacturing method of permanent magnet rotor |
| WO2018018901A1 (en) * | 2016-07-23 | 2018-02-01 | 中山大洋电机股份有限公司 | External rotor assembly and external rotor electric motor using same |
| CN112564357A (en) * | 2020-11-03 | 2021-03-26 | 超音速智能技术(杭州)有限公司 | Outer rotor single-phase motor |
| CN112564357B (en) * | 2020-11-03 | 2022-01-07 | 超音速智能技术(杭州)有限公司 | Outer rotor single-phase motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |