CN103855828A - Permanent-magnet direct-current brushless motor rotor structure - Google Patents
Permanent-magnet direct-current brushless motor rotor structure Download PDFInfo
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- CN103855828A CN103855828A CN201410080482.6A CN201410080482A CN103855828A CN 103855828 A CN103855828 A CN 103855828A CN 201410080482 A CN201410080482 A CN 201410080482A CN 103855828 A CN103855828 A CN 103855828A
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Abstract
The invention discloses a permanent-magnet direct-current brushless motor rotor structure. The permanent-magnet direct-current brushless motor rotor structure comprises a magnet, a magnetic ring and a rotating shaft, wherein the rotating shaft is sleeved with the magnet and provided with a shaft section matched with a magnetic ring hole. The shaft section is provided with steps. The magnetic ring is divided into four magnetic regions, wherein the side, along the outer surface of the magnetic ring, of the first magnetic region is an N electrode, the side, along the inner surface of the magnetic ring, of the first magnetic region is an S electrode, the second magnetic region and the first magnetic region are arranged in a central symmetry mode about the magnetic ring, the side, along the outer surface of the magnetic ring, of the third magnetic region is an S electrode, the side, along the inner surface of the magnetic ring, of the third magnetic region is an N electrode, and the fourth magnetic region and the third magnetic region are arranged in a central symmetry mode about the magnetic ring. The magnet has magnetic regions corresponding to the four magnetic regions of the magnetic ring. According to the permanent-magnet direct-current brushless motor rotor structure, the magnetic ring is convenient to install, the magnetic ring and the magnet right align with each other, and the magnetic ring and the rotating shaft are firmly fixed together.
Description
Technical field
The invention belongs to Electric Manufacture technical field, particularly relate to a kind of permanent-magnetic DC brushless motor rotor structure.
Background technology
The position that permanent-magnetic DC brushless motor rotor structure needs encoder to feed back rotor magnetic pole, wherein a kind of usual way is to utilize Hall to carry out signal feedback to the induction in magnetic field.But which needs a magnet ring identical with rotor magnetic pole and Hall to respond to feedback signal, thus, the mode that magnetizes of magnet ring and a link that is mounted for key.
Common magnet ring installation direction all needs fixing corresponding with rotor upper magnet magnetic pole to guarantee, for example notification number is CN202475214U, the applying date Chinese patent that is 2012.03.31, a kind of permanent-magnetic DC brushless motor rotor structure with anti-reverse mounting magnet ring is disclosed, magnet ring is divided into four polar regions, a magnetic pole is established in each polar region, and position, the magnetic pole of magnet are corresponding with four positions, polar region, the magnetic pole of magnet ring.Magnet and magnet ring generally bond in rotating shaft with glue, first sticky magnet, more bonding magnet ring.Because distance between magnet ring and magnet is very near, based on principle of same-sex repulsion, make must be fixed by artificial or frock in the time of assembling, after glue curing, just can unclamp.Like this, on the one hand, affect production efficiency; On the other hand, because these two parts are in stress always, in the During Process of Long-term Operation of motor, easily produce the loosening motor that causes and lost efficacy.
Summary of the invention
For solving the deficiency existing in prior art, technical problem to be solved by this invention is to provide the easy for installation and fixed permanent-magnetic DC brushless motor rotor structure of a kind of magnet ring.
To achieve these goals, the present invention realizes by the following technical solutions:
A kind of permanent-magnetic DC brushless motor rotor structure, comprises magnet, magnet ring and rotating shaft, and described magnet is set in rotating shaft, and described rotating shaft is provided with the shaft part mating with magnet ring hole, and described shaft part has step; Described magnet ring is divided into four magnetic regions, and wherein, the first magnetic region is the N utmost point along magnet ring outer surface one side, is the S utmost point along magnet ring inner surface one side, and the second magnetic region and the first magnetic region arrange about magnet ring Central Symmetry; The 3rd magnetic region is the S utmost point along magnet ring outer surface one side, is the N utmost point along magnet ring inner surface one side, and the 4th magnetic region and the 3rd magnetic region arrange about magnet ring Central Symmetry; Described magnet has the magnetic region with four corresponding settings in magnetic region of magnet ring.
Preferably, four of described magnet ring magnetic regions are divided take magnet ring centerline hole as boundary.
The beneficial effect of technical solution of the present invention is:
A kind of permanent-magnetic DC brushless motor rotor structure, because described rotating shaft is provided with the shaft part mating with magnet ring hole, described shaft part has step; Described magnet ring is divided into four magnetic regions, and wherein, the first magnetic region is the N utmost point along magnet ring outer surface one side, is the S utmost point along magnet ring inner surface one side, and the second magnetic region and the first magnetic region arrange about magnet ring Central Symmetry; The 3rd magnetic region is the S utmost point along magnet ring outer surface one side, is the N utmost point along magnet ring inner surface one side, and the 4th magnetic region and the 3rd magnetic region arrange about magnet ring Central Symmetry; Described magnet has the magnetic region with four corresponding settings in magnetic region of magnet ring.So not only make magnet ring easier for installation, thereby enhance productivity, and magnet ring and magnet contraposition neat, between magnet ring and rotating shaft, fixed property is stronger.
Accompanying drawing explanation
Fig. 1 is the assembly structure schematic diagram of permanent-magnetic DC brushless motor rotor structure of the present invention.
Fig. 2 is the local structure for amplifying schematic diagram of Fig. 1.
Fig. 3 is the structural representation of the magnet ring of permanent-magnetic DC brushless motor rotor structure of the present invention.
Fig. 4 is the structural representation of the magnet of permanent-magnetic DC brushless motor rotor structure of the present invention.
Embodiment
Below with reference to accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is described further, to understand fully object of the present invention, feature and effect.
Embodiment:
As shown in Figure 1 and Figure 2, a kind of permanent-magnetic DC brushless motor rotor structure of the present invention, comprises rotating shaft 1, magnet ring 2 and magnet 3, and magnet 3 is set in rotating shaft 1.Rotating shaft 1 is provided with the shaft part 12 matching with the circular hole of magnet ring 2, and a side of the close magnet 3 of shaft part 12 has step 11.
As shown in Figure 3, magnet ring 2 is divided into four magnetic regions take its circle hole centreline as boundary: magnetic region, upper left be the N utmost point along magnet ring 2 outer surface one sides, magnetic region, upper left be the S utmost point along magnet ring 2 inner surface one sides, magnetic region, bottom right and magnetic region, upper left are about the Central Symmetry setting of magnet ring 2; Magnetic region, upper right be the S utmost point along magnet ring 2 outer surface one sides, magnetic region, upper right be the N utmost point along magnet ring 2 inner surface one examples, magnetic region, lower-left and magnetic region, upper right are about the Central Symmetry setting of magnet ring 2.
As shown in Figure 4, magnet 3 has the magnetic region with four corresponding settings in magnetic region of magnet ring 2: magnetic region, upper left be the S utmost point along magnet 3 outer surface one sides, magnetic region, upper left be the N utmost point along magnet 3 inner surface one sides, magnetic region, bottom right and magnetic region, upper left are about the Central Symmetry setting of magnet 3; Magnetic region, upper right be the N utmost point along magnet 3 outer surface one sides, magnetic region, upper right be the S utmost point along magnet 3 inner surface one sides, magnetic region, lower-left and magnetic region, upper right are about the Central Symmetry setting of magnet 3.
When assembling: first magnet 3 covers are set in rotating shaft 1 and use glue bonding, until magnet 3 bonding firmly after, magnet ring 2 is inserted in to the shaft part 12 of rotating shaft 1, because there is a natural attraction between the sexes, magnet ring 2 and magnet 3 automatic alignings, and due to the effect of the step 11 of rotating shaft 1, between magnet ring 2 and magnet 3, form space isolation.Then magnet ring 2 use glue are bonded on the shaft part 12 of rotating shaft 1.As can be seen here, this structure not only makes magnet ring 2 easy for installation, enhance productivity, and magnet ring 2 is neat with magnet 3 contrapositions, fixed between magnet ring 2 and rotating shaft 1.
The effect of magnet 3 is rotated the rotor of motor under the effect of stator field; The effect of magnet ring 2 is positions of positioning magnet 3.A kind of permanent-magnetic DC brushless motor rotor structure of the present embodiment, owing to having exchanged NS utmost point corresponding relation, thereby the wiring direction of stator need to correspondingly exchange.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (2)
1. a permanent-magnetic DC brushless motor rotor structure, comprises magnet, magnet ring and rotating shaft, and described magnet is set in rotating shaft, it is characterized in that:
Described rotating shaft is provided with the shaft part mating with magnet ring hole, and described shaft part has step;
Described magnet ring is divided into four magnetic regions, wherein,
The first magnetic region is the N utmost point along magnet ring outer surface one side, is the S utmost point along magnet ring inner surface one side, and the second magnetic region and the first magnetic region arrange about magnet ring Central Symmetry;
The 3rd magnetic region is the S utmost point along magnet ring outer surface one side, is the N utmost point along magnet ring inner surface one side, and the 4th magnetic region and the 3rd magnetic region arrange about magnet ring Central Symmetry;
Described magnet has the magnetic region with four corresponding settings in magnetic region of magnet ring.
2. permanent-magnetic DC brushless motor rotor structure according to claim 1, is characterized in that: four magnetic regions of described magnet ring are divided take magnet ring centerline hole as boundary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080482.6A CN103855828A (en) | 2014-03-03 | 2014-03-03 | Permanent-magnet direct-current brushless motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080482.6A CN103855828A (en) | 2014-03-03 | 2014-03-03 | Permanent-magnet direct-current brushless motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103855828A true CN103855828A (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410080482.6A Pending CN103855828A (en) | 2014-03-03 | 2014-03-03 | Permanent-magnet direct-current brushless motor rotor structure |
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| CN (1) | CN103855828A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594024A (en) * | 2016-12-14 | 2017-04-26 | 贵州航天林泉电机有限公司 | Axial homopolarity magnetic steel bonding method |
| CN107040066A (en) * | 2017-04-11 | 2017-08-11 | 深圳市百盛传动有限公司 | A kind of permanent magnetic servo motor rotor and its manufacture method |
| CN109639085A (en) * | 2019-01-28 | 2019-04-16 | 西安广源机电技术有限公司 | A kind of magnet brushless |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2599854Y (en) * | 2003-02-16 | 2004-01-14 | 吴文胜 | Anisotropic ferrite multipolar magnetic ring |
| JP2008043043A (en) * | 2006-08-04 | 2008-02-21 | Daikin Ind Ltd | Rotary electric machine |
| US20120104882A1 (en) * | 2010-03-09 | 2012-05-03 | Zhongshan Broad-Ocean Motor Co., Ltd. | Motor rotor system |
| CN202364012U (en) * | 2011-11-27 | 2012-08-01 | 常州双骏新材料科技有限公司 | Rotor for micro-motor |
| CN202475214U (en) * | 2012-03-31 | 2012-10-03 | 卧龙电气集团股份有限公司 | Permanent magnetic DC brushless motor with reverse mounting preventing magnetic ring |
| CN103178630A (en) * | 2013-02-07 | 2013-06-26 | 浙江德盈电气制造有限公司 | Direct-current high-voltage motor rotor structure |
| CN203722362U (en) * | 2014-03-03 | 2014-07-16 | 常州奥立思特电子有限公司 | Permanent magnet brushless DC motor rotor structure |
-
2014
- 2014-03-03 CN CN201410080482.6A patent/CN103855828A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2599854Y (en) * | 2003-02-16 | 2004-01-14 | 吴文胜 | Anisotropic ferrite multipolar magnetic ring |
| JP2008043043A (en) * | 2006-08-04 | 2008-02-21 | Daikin Ind Ltd | Rotary electric machine |
| US20120104882A1 (en) * | 2010-03-09 | 2012-05-03 | Zhongshan Broad-Ocean Motor Co., Ltd. | Motor rotor system |
| CN202364012U (en) * | 2011-11-27 | 2012-08-01 | 常州双骏新材料科技有限公司 | Rotor for micro-motor |
| CN202475214U (en) * | 2012-03-31 | 2012-10-03 | 卧龙电气集团股份有限公司 | Permanent magnetic DC brushless motor with reverse mounting preventing magnetic ring |
| CN103178630A (en) * | 2013-02-07 | 2013-06-26 | 浙江德盈电气制造有限公司 | Direct-current high-voltage motor rotor structure |
| CN203722362U (en) * | 2014-03-03 | 2014-07-16 | 常州奥立思特电子有限公司 | Permanent magnet brushless DC motor rotor structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594024A (en) * | 2016-12-14 | 2017-04-26 | 贵州航天林泉电机有限公司 | Axial homopolarity magnetic steel bonding method |
| CN107040066A (en) * | 2017-04-11 | 2017-08-11 | 深圳市百盛传动有限公司 | A kind of permanent magnetic servo motor rotor and its manufacture method |
| CN109639085A (en) * | 2019-01-28 | 2019-04-16 | 西安广源机电技术有限公司 | A kind of magnet brushless |
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Application publication date: 20140611 |