CN1925287A - Brushless direct current motor rotor and its making method - Google Patents
Brushless direct current motor rotor and its making method Download PDFInfo
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- CN1925287A CN1925287A CN 200510014913 CN200510014913A CN1925287A CN 1925287 A CN1925287 A CN 1925287A CN 200510014913 CN200510014913 CN 200510014913 CN 200510014913 A CN200510014913 A CN 200510014913A CN 1925287 A CN1925287 A CN 1925287A
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Abstract
This invention relates to brushless direct current motor rotor and its process method, which comprises the following parts: brushless direct current motor rotor; rotor chip formed by multiple steel board layers; rotation axis pressed into above rotor chip; multiple magnetic iron with certain distance for different magnetic electrode along its circle around above rotor chip; frame around above rotor chip to expose each magnetic iron.
Description
Technical field
The present invention relates to rotor of brshless DC motor and preparation method thereof.Detailed says, the present invention relates to: owing to can stablize firm fixed magnet, thus can improve reliability, and, position deviation between the magnet is minimized, thereby can prevent that noise from producing and the rotor of the brshless DC motor of decreased performance and preparation method thereof.
Background technology
Generally speaking, so-called brshless DC motor (BRUSHLESS MOTOR) is explained as follows: brshless DC motor is different with other direct current machines, be to replace brush and commutator (commutator) to realize rectification, promptly abandon mechanical system and utilize electric mode to realize rectification with semiconductor switch.
Fig. 1 is the oblique view of structure of rotor that shows the brshless DC motor of conventional art.Fig. 2 is the profile that shows the integrated structure of the magnet in the rotor of brshless DC motor of conventional art.
Fig. 1 is to shown in Figure 2, and the brshless DC motor 1 of conventional art comprises following components and constitutes: the stator 10 that is fixedly set in the inside of shell (not having prompting among the figure); In the inside of said stator 10, at interval a determining deviation is from every setting, and by and the interaction of 10 of stators and rotor rotated 20.
Said stator 10 includes following components and constitutes: the stator core 11 that a plurality of steel plate laminations form; Be wound in the coil 15 of said stator core 11.Said stator core 11 is made of following components: the yoke portion 12 of annular shape; Protrude to radial direction inboard in above-mentioned yoke portion 12, and a plurality of serrations 13 that are provided with along the at interval certain intervals of side face direction.Above-mentioned coil 15 is wound in the serrations 13 of stator core 11.
Above-mentioned rotor 20 comprises following components and constitutes: the rotor core 21 that a plurality of steel plate laminations form; Be pressed into the rotating shaft 22 at the center that is incorporated into above-mentioned rotor core 21; For mutually different magnetic pole is arranged alternately along the circumferencial direction of above-mentioned rotor core 21, be close to a plurality of magnet 23 of the side face of rotor core 21.
At this moment, above-mentioned each magnet 23 utilizes bonding agent 24 to be close to the side face of rotor core 21.
But in the brshless DC motor 1 of conventional art, rotor core 21 is that a plurality of steel plates by lamination form, and therefore is close to the not enough homogeneous that the side face of the rotor core 21 of magnet 23 forms.Therefore, the contact area of magnet 23 and rotor core 21 will reduce, thereby when motor moved, because heat that produces and vibration etc., the magnet of being close to by bonding agent 24 23 might come off from rotor core 21.Therefore the problem that finally causes the reliability decline of motor.
In addition, when the rotor core 21 that aforesaid side face is glued with magnet 23 is arranged at the inside of stator 10,, can exist magnet 23 by scratch or damaged problem if magnet 23 (the particularly edge of magnet) is contacted with under the situation of stator 10.
And, when utilizing bonding agent to be close to above-mentioned each magnet 23 in the conventional art, can have the possibility that produces deviation between each magnet 23.As mentioned above, be close to, produce the problem of noise or decreased performance in the time of then can causing rotor 20 rotations with the state that above-mentioned each magnet 23 has position deviation.
Summary of the invention
The present invention proposes in order to solve the above problems.Therefore, the purpose of this invention is to provide: owing to can stablize firm fixed magnet, thus can improve reliability.And the position deviation between the magnet is minimized, thereby can prevent that noise from producing and the rotor of the brshless DC motor of decreased performance and preparation method thereof.
To achieve these goals, the invention provides the rotor that comprises the brshless DC motor that following components constitutes: the rotor core that a plurality of steel plate laminations form; Be pressed into the rotating shaft at the center that is incorporated into above-mentioned rotor core; At the side face of above-mentioned rotor core, alternately arrange along its circumferencial direction in order to make mutually different magnetic pole, and a plurality of magnet that interval one determining deviation is provided with; Accommodate above-mentioned each magnet, and the outside of above-mentioned each magnet is exposed, and the framework of integrally moulded moulding around above-mentioned rotor core.
In addition, feature of the present invention is: the central part of above-mentioned each magnet is with respect to both ends, and the radial direction along above-mentioned rotor core protrudes formation laterally more.
In addition, feature of the present invention is: said frame also includes the ribs that is formed at the zone between above-mentioned each magnet.
In addition, feature of the present invention is: above-mentioned ribs protrudes along the radial direction of above-mentioned rotor core, and has certain length along axis direction.
In addition, feature of the present invention is: with respect to the central part of above-mentioned magnet, above-mentioned ribs protrudes formation along the radial direction of above-mentioned rotor core more.
In addition, the manufacture method according to the rotor of brshless DC motor of the present invention is to be made of following step: in conjunction with rotating shaft with formed the step of rotor core by a plurality of steel plate laminations; At the side face of above-mentioned rotor core,, support by stationary fixture, and it is arranged at the step of the inside of mould in order a plurality of magnet to be set along circumferencial direction interval one determining deviation; Resin is injected in inside to above-mentioned mould, forms as one in order to make above-mentioned magnet and above-mentioned rotor core, and the step of formation framework; After the said frame sclerosis, from above-mentioned mould and said fixing anchor clamps, isolate the step of goods.
As mentioned above, rotor of foundation brshless DC motor of the present invention and preparation method thereof can be stablized firm fixed magnet, therefore can improve reliability.Moreover, when magnet is installed, can also prevent the noise that position deviation causes and the problem of decreased performance.
Description of drawings
Fig. 1 is the oblique view of structure of rotor that shows the brshless DC motor of conventional art.
Fig. 2 is the profile that shows the integrated structure of the magnet in the rotor of brshless DC motor of conventional art.
Fig. 3 is the oblique view of demonstration according to the structure of the rotor of brshless DC motor of the present invention.
Fig. 4 is the B part expanded view of displayed map 3.
Fig. 5 is the engineering drawing of demonstration according to the making engineering of the rotor of brshless DC motor of the present invention.
The major part description of reference numerals
10: brshless DC motor 110: stator
111: stator core 112: yoke portion (YOKE)
113: serrations 115: coil
120: rotor 121: rotor core
122: rotating shaft 123: magnet
124: framework 125: ribs
Embodiment
Below, with reference to the accompanying drawings, the present invention will be described in detail.
Fig. 3 is the oblique view of demonstration according to the structure of the rotor of brshless DC motor of the present invention.Fig. 4 is the B part expanded view of displayed map 3.Fig. 5 is the engineering drawing of demonstration according to the making engineering of the rotor of brshless DC motor of the present invention.
Before the present invention will be described, it is pointed out that in order to make technological thought of the present invention distinct more, will omit specifying for function of knowing altogether or structure.
, possess the brshless DC motor 10 that has according to rotor of the present invention and comprise following components and constitute: the stator 110 that is fixedly set in the inside of shell (not having among the figure to point out) to shown in Figure 4 as Fig. 3; In the inside of said stator 110, an at interval determining deviation setting, and by and stator 110 between the rotor of the present invention 120 of interaction rotation.
Said stator 110 comprises following components and constitutes: the stator core 111 that a plurality of steel plate laminations form; Be wound in the coil 115 of said stator core 111.Said stator core 111 is made of following components: the yoke portion 112 of annular shape; In above-mentioned yoke portion 112 inboards, protrude along radial direction, and along the side face direction at interval a determining deviation from every a plurality of serrations 113 that are provided with.Above-mentioned coil 115 is wound in stator core 111 serrations 113.
That is, said frame 124 exposes the outside of each magnet 123 when accommodating each magnet 123, and integrally moulded moulding is around rotor core 121, thereby rotor core 121 and each magnet 123 are formed as one.
Here, the central part of the outside of above-mentioned each magnet 123 is with respect to both ends, protrudes formation more laterally along the radial direction of rotor core 121.
In addition, the zone between each magnet 123 of said frame 124 is formed with ribs 125.Zone between each magnet 123, above-mentioned ribs 125 protrudes along the radial direction of rotor core 121, and has certain-length along axis direction, therefore can strengthen the intensity between each magnet 123.
In addition, with respect to the central part of magnet 123, above-mentioned each ribs 125 protrudes along the radial direction of rotor core 121 more.
Below, will the manufacture method according to the rotor of brshless DC motor of the present invention be described.
As shown in Figure 5, comprising following step according to the manufacture method of the rotor of brshless DC motor of the present invention constitutes: in conjunction with rotating shaft 122 with formed the step of rotor core 121 by a plurality of steel plate laminations; At the side face of above-mentioned rotor core 121, for can along circumferencial direction at interval a determining deviation a plurality of magnet 123 are set, and support, and it be arranged at the step of the inside of mould by stationary fixture; Resin is injected in inside to above-mentioned mould, forms as one in order to make above-mentioned magnet 123 and above-mentioned rotor core 121, and the step of formation framework 124; After said frame 124 sclerosis, isolate the step of goods from above-mentioned mould and said fixing anchor clamps.
This is described in more detail as follows.Form rotor core 121 after at first preprepared being had a plurality of steel plate laminations of circular plate shape.Then preprepared rotating shaft 122 is pressed into the center that is incorporated into rotor core 121.
Subsequently,, different magnetic poles is alternately arranged along its circumferencial direction, and made between a plurality of magnet 123 at interval a determining deviation from every setting at the side face of above-mentioned rotor core 121.At this moment, need by the firm fixing above-mentioned magnet of other stationary fixture such as anchor clamps (jig) state is set after, it is arranged at the inside of mould.
Then, inject resin, form framework 124, thereby each magnet 123 and rotor core 121 are formed as one to the inside of above-mentioned mould.
At last, after said frame 124 sclerosis, goods are separated from mould and stationary fixture, thereby finished the making engineering of rotor 120.
Here, drawing symbol 124a is an accepting hole.The effect of above-mentioned accepting hole is the steady pin (not prompting among the figure) of accommodating the stationary fixture of the state that is provided with that is used for fixing above-mentioned each magnet 123.
As mentioned above, the magnet 123 among the present invention can be fixed with rotor core 121 one by the framework 124 that is shaped in rotor core 121.Therefore, the phenomenon that the magnet 123 that heat that produces in the time of can preventing owing to the motor operation or vibration etc. cause comes off from rotor core 121, thus can prevent the problem that reliability descends.
In addition, by aforesaid structure, can be at each magnet 123 of minimum position deviation range internal fixation, therefore, can prevent the problem that noise that the position deviation of each magnet 123 causes and reliability descend.
And in said frame 124, the zone between each magnet 123 is formed with ribs 125.With respect to magnet 123, above-mentioned ribs 125 protrudes formation laterally along the radial direction of rotor core 121 more.Because said structure when assemble rotor 120 and stator 110, can prevent the direct contact between magnet 123 and the stator 110, thereby can prevent to contact scratch and the breakage that causes.
As mentioned above, possible embodiment of the present invention has been described, still, right of the present invention is not confined to aforesaid embodiment, but is decided by the record in claims.Under the situation that does not exceed the technology of the present invention scope of putting down in writing in claims, the operator of relevant industries may carry out various deformation and modification to it.
Claims (6)
1, a kind of rotor of brshless DC motor is characterized in that, comprising:
The rotor core that a plurality of steel plate laminations form;
Be pressed into the rotating shaft at the center that is incorporated into above-mentioned rotor core;
At the side face of above-mentioned rotor core, alternately arrange along its circumferencial direction in order to make mutually different magnetic pole, and a plurality of magnet that interval one determining deviation is provided with;
Accommodate above-mentioned each magnet, and the outside of above-mentioned each magnet is exposed, and the framework of integrally moulded moulding around above-mentioned rotor core.
2, the rotor of brshless DC motor according to claim 1 is characterized in that:
The central part of above-mentioned each magnet is with respect to both ends, and the radial direction along above-mentioned rotor core protrudes formation laterally more.
3, the rotor of brshless DC motor according to claim 1 and 2 is characterized in that:
Said frame also includes the ribs that is formed at the zone between above-mentioned each magnet.
4, the rotor of brshless DC motor according to claim 3 is characterized in that:
Above-mentioned ribs protrudes along the radial direction of above-mentioned rotor core, and has certain length along axis direction.
5, the rotor of brshless DC motor according to claim 4 is characterized in that:
With respect to the central part of above-mentioned magnet, above-mentioned ribs protrudes formation along the radial direction of above-mentioned rotor core more.
6, a kind of manufacture method of rotor of brshless DC motor is characterized in that, comprises successively:
Form rotor core in conjunction with rotating shaft with by a plurality of steel plate laminations;
At the side face of above-mentioned rotor core,, support by stationary fixture, and it is arranged at the inside of mould in order a plurality of magnet to be set along circumferencial direction interval one determining deviation;
Resin is injected in inside to above-mentioned mould, forms as one in order to make above-mentioned magnet and above-mentioned rotor core, and forms framework;
After the said frame sclerosis, from above-mentioned mould and said fixing anchor clamps, isolate goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014913 CN1925287A (en) | 2005-08-30 | 2005-08-30 | Brushless direct current motor rotor and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014913 CN1925287A (en) | 2005-08-30 | 2005-08-30 | Brushless direct current motor rotor and its making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1925287A true CN1925287A (en) | 2007-03-07 |
Family
ID=37817809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510014913 Pending CN1925287A (en) | 2005-08-30 | 2005-08-30 | Brushless direct current motor rotor and its making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1925287A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7847458B2 (en) | 2007-05-17 | 2010-12-07 | Samsung Electronics Co., Ltd. | Motor having rivetless rotor core |
| CN105262255A (en) * | 2015-10-22 | 2016-01-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic tile framework and magnetic tile pasting method |
| CN108242873A (en) * | 2016-12-27 | 2018-07-03 | 丰田自动车株式会社 | rotor manufacturing device |
-
2005
- 2005-08-30 CN CN 200510014913 patent/CN1925287A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7847458B2 (en) | 2007-05-17 | 2010-12-07 | Samsung Electronics Co., Ltd. | Motor having rivetless rotor core |
| CN105262255A (en) * | 2015-10-22 | 2016-01-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic tile framework and magnetic tile pasting method |
| CN108242873A (en) * | 2016-12-27 | 2018-07-03 | 丰田自动车株式会社 | rotor manufacturing device |
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