CN103545958A - Fixing structure and method of inner rotor motor permanent magnet - Google Patents
Fixing structure and method of inner rotor motor permanent magnet Download PDFInfo
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- CN103545958A CN103545958A CN201310528239.1A CN201310528239A CN103545958A CN 103545958 A CN103545958 A CN 103545958A CN 201310528239 A CN201310528239 A CN 201310528239A CN 103545958 A CN103545958 A CN 103545958A
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Abstract
The invention relates to a fixing structure and method of an inner rotor motor permanent magnet. The fixing structure comprises a motor rotor iron core and the permanent magnet fixedly arranged on the outer circumference of the motor rotor iron core. The permanent magnet adheres to the outer circumference of the motor rotor iron core through an adhesion agent. End plates are fixedly arranged at the two ends of the motor rotor iron core in the axial direction. Each end plate comprises a base and fixing ends evenly distributed on the outer circumference of the base. The fixing ends and the permanent magnet are tightly matched. The adhesion agent is epoxy glue or anaerobic adhesive. Bumps are arranged on the outer circumference of the motor rotor iron core. The fixing ends comprise the first fixing ends, the second fixing ends and the third fixing ends. The permanent magnet comprises a first end face, a second end face and a third end face. The first fixing ends make contact with the third end face of the permanent magnet. The second fixing ends make contact with the second end face of the permanent magnet. The third fixing ends make contact with the first end face of the permanent magnet. The fixing structure and method can enable the permanent magnet to be firm and stable and not to fall off, the air gap between a stator and a rotor is not affected, and performance of an inner rotor high-speed motor is improved.
Description
Technical field
The present invention relates to technical field of motors, be specifically related to a kind of inner rotor motor magnet fixing structure of permanent and fixing means.
Background technology
In household electric appliances, internal rotor high-speed electric expreess locomotive is because performance is good, low price is widely used.Existing internal rotor high-speed electric expreess locomotive permanent magnet fixing means comprises that injection moulding is fixed, permanent magnet embeds the methods such as rotor core and permanent magnet appearance surface cover steel bushing.Injection moulding fixation application is in internal rotor high-speed electric expreess locomotive time, and permanent magnet easily comes off, and has affected the stability of high-speed electric expreess locomotive operation.And permanent magnet embeds the method for rotor core and permanent magnet appearance surface cover steel bushing, under same process condition, can cause the air gap between high-speed electric expreess locomotive stator and rotor to become large, reduce the performance of internal rotor high-speed electric expreess locomotive.
Summary of the invention
The object of the present invention is to provide a kind of inner rotor motor magnet fixing structure of permanent and fixing means, the fixed structure of this permanent magnet and fixing means, can make reliable stable the fixing of permanent magnet not come off, and do not affect the air gap between motor stator and rotor, thereby improved the performance of internal rotor high-speed electric expreess locomotive.
For achieving the above object, the present invention has adopted following technical scheme: a kind of inner rotor motor magnet fixing structure of permanent, comprise motor rotor core and the permanent magnet that is installed in motor rotor core excircle, described permanent magnet is bonded on motor rotor core excircle by binding agent, and the axial two ends of described motor rotor core are installed with end plate.
Described end plate comprises base and be evenly distributed on the stiff end on base excircle, and described stiff end and permanent magnet closely cooperate.
Described binding agent is epoxy glue.
Described binding agent is anaerobic adhesive.
Described motor rotor core excircle is provided with projection.
Described stiff end comprises the first stiff end, the second stiff end and the 3rd stiff end; Described permanent magnet comprises the first end face, the second end face and the 3rd end face; The first described stiff end contacts with the 3rd end face of permanent magnet, and the second described stiff end contacts with the second end face of permanent magnet, and the 3rd described stiff end contacts with the first end face of permanent magnet.
Described projection is semi-cylindrical, and radius is not more than 0.2mm.
The first end face of described permanent magnet and the angle of the second end face are 90 degree.
The first end face of described permanent magnet and the angle of the second end face are greater than 90 degree.
The present invention also aims to provide a kind of fixing means of above-mentioned inner rotor motor magnet fixing structure of permanent, this fixing means comprises the following steps:
(1) according to the type of internal rotor high-speed electric expreess locomotive, on motor rotor core excircle, evenly arrange some, radius is not more than the semi-cylindrical projection of 0.2mm;
(2) take projection thickness as standard, on the motor rotor core excircle between two projections, smear binding agent, permanent magnet is bonded in rapidly on motor rotor core excircle by binding agent;
(3) at the axial two ends of motor rotor core, by riveting method, two end plates are set, by end plate, in electronics rotor axial and motor direction of rotation, permanent magnet are fixed.
Advantage of the present invention:
(1) the present invention is by being fixed permanent magnet from motor rotor core two ends with end plate, the part that fixed position can not affect in the middle part of permanent magnet and stator works, thereby can not change the air gap between rotor and stator, improve the stability of internal rotor high-speed electric expreess locomotive.
(2) tip plate configurations that the present invention adopts closely cooperates by three stiff ends of three end faces and permanent magnet, can either guarantee the steadiness of permanent magnet on rotor axial, can guarantee that again motor rotor core is in rotary course, permanent magnet can not be moved in direction of rotation.
The present invention can make reliable stable the fixing of permanent magnet not come off, and does not affect the air gap between motor stator and rotor, thereby has improved the performance of internal rotor high-speed electric expreess locomotive.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is vertical view of the present invention;
Fig. 3 is the A-A cutaway view of the Fig. 2 in embodiment 1;
Fig. 4 is the A-A cutaway view of the Fig. 2 in embodiment 2;
Fig. 5 is the structural representation of motor rotor core;
Fig. 6 is the magnet structure schematic diagram in embodiment 1;
Fig. 7 is the magnet structure schematic diagram in embodiment 2;
Fig. 8 is the tip plate configurations schematic diagram in embodiment 1;
Fig. 9 is the tip plate configurations schematic diagram in embodiment 2.
Wherein:
1, end plate, 2, motor rotor core, 3, permanent magnet, 4, projection, 11, the first stiff end of end plate, 12, the second stiff end of end plate, 13, the 3rd stiff end of end plate, 31, the first end face of permanent magnet, 32, the second end face of permanent magnet, the 3rd end face of 33 permanent magnets.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
A kind of inner rotor motor magnet fixing structure of permanent as shown in Fig. 1-Fig. 9, comprise motor rotor core 2 and the permanent magnet 3 that is installed in motor rotor core 2 excircles, permanent magnet 3 is bonded on motor rotor core 2 excircles by binding agent, and the axial two ends of motor rotor core 2 are installed with end plate 1.Specifically, binding agent is that epoxy glue or binding agent are anaerobic adhesive.By using the strong highly effective binder of cementitiousness that permanent magnet is fixed to motor rotor core surface, and utilize the end plate with ad hoc structure from motor rotor core two ends, permanent magnet to be reinforced, thereby guaranteed that internal rotor high-speed rotary motor is in High Rotation Speed process, permanent magnet can not come off, and has improved the stability of internal rotor high-speed electric expreess locomotive.
Further, end plate 1 comprises base 14 and is evenly distributed on the stiff end on base 14 excircles, and stiff end and permanent magnet 3 closely cooperate.Specifically, stiff end comprises the first stiff end 11, the second stiff end 12 and the 3rd stiff end 13; Described permanent magnet comprises the first end face 31, the second end face 32 and the 3rd end face 33; The first described stiff end 11 contacts with the 3rd end face 33 of permanent magnet, and the second described stiff end 12 contacts with the second end face 32 of permanent magnet, and the 3rd described stiff end 13 contacts with the first end face 31 of permanent magnet.End plate by and the upper surface of permanent magnet, He Liangge side, lower surface closely cooperates, thereby has guaranteed the stability that runs up in process at motor.The close contact of the 3rd end face by end plate the first stiff end and permanent magnet, can guarantee that motor is in rotary course, and along in direction of rotation, the first stiff end can be given resistance of the 3rd end face, prevents that permanent magnet from moving along direction of rotation.By the second end face close contact of end plate the second stiff end and permanent magnet, the 3rd end face close contact of the 3rd stiff end and permanent magnet, can guarantee that permanent magnet is not moved on motor rotor core is axial.On the basis with binding agent fixed permanent magnet, recycling end plate carries out second consolidation from two ends to permanent magnet, so even inner rotor motor High Rotation Speed, permanent magnet can not come off from rotor, thereby can not affect the performance of motor.
Further, motor rotor core 2 excircles are provided with projection 4.Specifically, projection 4 is semi-cylindrical, and radius is not more than 0.2mm.By projection is evenly set on motor rotor core excircle, can guarantee can smear when smearing binding agent evenly.Thereby make each permanent magnet surfaces on a circumference, guaranteed that the air gap between motor stator and rotor is stable, stable magnetic field, and motor performance is stable.Protruding radius is made as and is less than or equal to 0.2mm, both can play the effect of object of reference, can save material again.
Further, the first end face 31 of permanent magnet and the angle of the second end face 32 are 90 degree.By the angle of the first end face and the second end face is made as to 90 degree, can, without permanent magnet is processed, make the fixation procedure of permanent magnet more simple and convenient.
The present invention also aims to provide a kind of fixing means of above-mentioned inner rotor motor magnet fixing structure of permanent, this fixing means comprises the following steps:
(1) according to the type of internal rotor high-speed electric expreess locomotive, on motor rotor core excircle, evenly arrange some, radius is not more than the semi-cylindrical projection of 0.2mm;
(2) take projection thickness as standard, on the motor rotor core excircle between two projections, smear binding agent, permanent magnet is bonded in rapidly on motor rotor core excircle by binding agent;
(3) at the axial two ends of motor rotor core, by riveting method, two end plates are set, by end plate, in electronics rotor axial and direction of rotation, permanent magnet are fixed.
The first end face 31 of permanent magnet and the angle of the second end face 32 are greater than 90 degree, and other are with embodiment 1.By the first end face of permanent magnet and the angle of the second end face, be set to be greater than 90 degree, the end sections that is about to permanent magnet cuts, and will be arranged to inclined-plane with the contact-making surface of end plate.So both saved permanent magnet material, and can make again the performance of motor rotor core more stable.
In sum, a kind of inner rotor motor magnet fixing structure of permanent of the present invention and fixing means, first by the strong binding agent of cementitiousness, permanent magnet is bonded in to the rotor core surface of internal rotor high-speed electric expreess locomotive, avoid easily the come off problem of existing internal rotor high-speed electric expreess locomotive permanent magnet in fixing, thereby improved the performance of internal rotor high-speed electric expreess locomotive.Secondly, by permanent magnet being fixed from motor rotor core two ends with end plate, the part that fixed position can not affect in the middle part of permanent magnet and stator works, thus can not change the air gap between rotor and stator, improved the stability of internal rotor high-speed electric expreess locomotive.Again, the tip plate configurations that the present invention adopts closely cooperates by three stiff ends of three end faces and permanent magnet, can either guarantee the steadiness of permanent magnet on rotor axial, can guarantee that again motor rotor core is in rotary course, permanent magnet can not be moved in direction of rotation.The present invention can make reliable, stable the fixing of permanent magnet not come off, and does not affect the air gap between motor stator and rotor, thereby has improved the performance of internal rotor high-speed electric expreess locomotive.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection range of the claims in the present invention book.
Claims (10)
1. an inner rotor motor magnet fixing structure of permanent, comprise motor rotor core (2) and be installed in the permanent magnet (3) of motor rotor core (2) excircle, it is characterized in that: described permanent magnet (3) is bonded on motor rotor core (2) excircle by binding agent, described motor rotor core (2) is axially installed with end plate (1) in two ends.
2. a kind of inner rotor motor magnet fixing structure of permanent according to claim 1, it is characterized in that: described end plate (1) comprises base (14) and be evenly distributed on the stiff end on base (14) excircle, described stiff end and permanent magnet (3) closely cooperate.
3. a kind of inner rotor motor magnet fixing structure of permanent according to claim 1, is characterized in that: described binding agent is epoxy glue.
4. a kind of inner rotor motor magnet fixing structure of permanent according to claim 1, is characterized in that: described binding agent is anaerobic adhesive.
5. a kind of inner rotor motor magnet fixing structure of permanent according to claim 1, is characterized in that: described motor rotor core (2) excircle is provided with projection (4).
6. according to right, want a kind of inner rotor motor magnet fixing structure of permanent described in 2, it is characterized in that: described stiff end comprises the first stiff end (11), the second stiff end (12) and the 3rd stiff end (13); Described permanent magnet comprises the first end face (31), the second end face (32) and the 3rd end face (33); Described the first stiff end (11) contacts with the 3rd end face (33) of permanent magnet, described the second stiff end (12) contacts with second end face (32) of permanent magnet, and the 3rd described stiff end (13) contacts with first end face (31) of permanent magnet.
7. a kind of inner rotor motor magnet fixing structure of permanent according to claim 5, is characterized in that: described projection (4) is semi-cylindrical, and radius is not more than 0.2mm.
8. a kind of inner rotor motor magnet fixing structure of permanent according to claim 6, is characterized in that: first end face (31) of described permanent magnet and the angle of the second end face (32) are 90 degree.
9. a kind of inner rotor motor magnet fixing structure of permanent according to claim 6, is characterized in that: first end face (31) of described permanent magnet and the angle of the second end face (32) are greater than 90 degree.
10. the fixing means of a kind of inner rotor motor magnet fixing structure of permanent according to claim 1, is characterized in that: this fixing means comprises the following steps:
(1) according to the type of internal rotor high-speed electric expreess locomotive, on motor rotor core excircle, evenly arrange some, radius is not more than the semi-cylindrical projection of 0.2mm;
(2) take projection thickness as standard, on the motor rotor core excircle between two projections, smear binding agent, permanent magnet is bonded in rapidly on motor rotor core excircle by binding agent;
(3) at the axial two ends of motor rotor core, by riveting method, two end plates are set, by end plate, in electronics rotor axial and motor direction of rotation, permanent magnet are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528239.1A CN103545958A (en) | 2013-10-31 | 2013-10-31 | Fixing structure and method of inner rotor motor permanent magnet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528239.1A CN103545958A (en) | 2013-10-31 | 2013-10-31 | Fixing structure and method of inner rotor motor permanent magnet |
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| Publication Number | Publication Date |
|---|---|
| CN103545958A true CN103545958A (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310528239.1A Pending CN103545958A (en) | 2013-10-31 | 2013-10-31 | Fixing structure and method of inner rotor motor permanent magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300732A (en) * | 2016-08-30 | 2017-01-04 | 浙江玛拓驱动设备有限公司 | A kind of Capstan rotor structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06178476A (en) * | 1992-12-08 | 1994-06-24 | Nippon Kentetsu Co Ltd | Fixation structure for permanent magnet of rotor |
| JP2001025193A (en) * | 1999-07-09 | 2001-01-26 | Nippon Densan Corp | Permanent magnet type rotor and cover for preventing scattering of permanent magnet |
| CN1531771A (en) * | 2001-03-20 | 2004-09-22 | ��Ĭ���� | Improved permanent magnet rotor design |
| CN201178342Y (en) * | 2008-04-11 | 2009-01-07 | 佛山市顺德区金泰德胜电机有限公司 | Permanent magnetic rotator |
| CN203562857U (en) * | 2013-10-31 | 2014-04-23 | 合肥荣事达三洋电器股份有限公司 | Fixing structure of inner rotor motor permanent magnet |
-
2013
- 2013-10-31 CN CN201310528239.1A patent/CN103545958A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06178476A (en) * | 1992-12-08 | 1994-06-24 | Nippon Kentetsu Co Ltd | Fixation structure for permanent magnet of rotor |
| JP2001025193A (en) * | 1999-07-09 | 2001-01-26 | Nippon Densan Corp | Permanent magnet type rotor and cover for preventing scattering of permanent magnet |
| CN1531771A (en) * | 2001-03-20 | 2004-09-22 | ��Ĭ���� | Improved permanent magnet rotor design |
| CN201178342Y (en) * | 2008-04-11 | 2009-01-07 | 佛山市顺德区金泰德胜电机有限公司 | Permanent magnetic rotator |
| CN203562857U (en) * | 2013-10-31 | 2014-04-23 | 合肥荣事达三洋电器股份有限公司 | Fixing structure of inner rotor motor permanent magnet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300732A (en) * | 2016-08-30 | 2017-01-04 | 浙江玛拓驱动设备有限公司 | A kind of Capstan rotor structure |
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Address after: 230088 No. 96 science Avenue, hi tech Zone, Anhui, Hefei Applicant after: Whirlpool (China) Limited by Share Ltd Address before: 230088 No. 96 science Avenue, hi tech Zone, Anhui, Hefei Applicant before: Hefei Rongshida Sanyo Electric Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: HEFEI RONGSHIDA SANYO ELECTRIC CO., LTD. TO: WHIRLPOOL (CHINA) CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140129 |
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| RJ01 | Rejection of invention patent application after publication |