CN101685991A - Motor rotor - Google Patents
Motor rotor Download PDFInfo
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- CN101685991A CN101685991A CN200810168325A CN200810168325A CN101685991A CN 101685991 A CN101685991 A CN 101685991A CN 200810168325 A CN200810168325 A CN 200810168325A CN 200810168325 A CN200810168325 A CN 200810168325A CN 101685991 A CN101685991 A CN 101685991A
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- rotation axis
- magnet
- outer peripheral
- peripheral face
- location division
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Abstract
The invention relates to a motor rotor comprising a rotation shaft and a plasticity magnet. The periphery surface of the rotation shaft is provided with a positioning part which is provided with a cross section in the radial direction, wherein the cross section is in a non right round shape; the plasticity magnet coats the periphery surface of the rotation shaft in an injection molding pattern, and the inner walls formed by the plasticity are mutually clipped and combined with the positioning part. By adopting the structure, the plasticity magnet can be ensured not to drop from the rotation shaft so as to have a stable combination effect and simultaneously reduce integral structural complexity as well as improve the assembly convenience.
Description
Technical field
The invention relates to a kind of motor rotor, especially a kind of rotor structure of inner rotor motor.
Background technology
At present common on the market motor configuration roughly can be divided into external-rotor motor and inner rotor motor, and wherein external-rotor motor roughly has problems such as rotational stabilization is relatively poor compared to inner rotor motor.Therefore, electronic product now generally towards at a high speed, function is integrated with the prerequisite of direction research and development design such as microminiaturized trend under, inner rotor motor can satisfy the radiating requirements of aforementioned electronic product compared to external-rotor motor.
Please refer to shown in Figure 1ly, the rotor 7 of first kind of existing inner rotor motor roughly comprises a rotation axis 71 and a magnet 72, and an axis hole 721 is run through in these magnet 72 central authorities, and this axis hole 721 can be for the back combination that stretch through of this rotation axis 71.Generally speaking, the combination between this rotation axis 71 and this magnet 72 can be divided into two kinds, and the first makes between the axis hole 721 of this rotation axis 71 and this magnet 72 and is the tight fit state, and just this kind combination causes this magnet 72 cracked easily; Its two be utilize sticker to make to be adhesion between the axis hole 721 of this rotation axis 71 and this magnet 72 fixing, but sticker itself also loses viscosity because of rotten easily, and then causes this magnet 72 to get loose on this rotation axis 71 or rotates arbitrarily.
For improving the shortcoming of aforementioned first kind of existing rotor 7, promptly there is relevant practitioner to research and develop patent of invention case as TaiWan, China application No. 97104952 " motor rotor Motor rotor structure ".Please refer to shown in Figure 2ly, the rotor 8 of this second kind of existing inner rotor motor roughly comprises a rotation axis 81, several magnet cramps 82, at least two magnet 83 and two magnet pads 84.Respectively this magnet cramp 82 can pile up the outer peripheral face that is sheathed on this rotation axis 81, and respectively this magnet cramp 82 has the catching groove 821 more than at least two respectively, respectively this magnet 83 is embedded in the catching groove 821 that is fixed in this magnet cramp 82 respectively, and 84 on this two magnet pad is in order to grip respectively this magnet cramp 82 and respectively this magnet 83; Whereby, can utilize the respectively structural design of this magnet cramp 82 and this two magnet pad 84, to guarantee that respectively this magnet 83 can not come off on this rotation axis 81.Yet though this rotor 8 can effectively solve aforementioned first kind of existing rotor 7 existing disadvantages associated, just the member of this rotor 8 is formed still slightly complexity, so its assembling convenience is not good.
Again for improving the shortcoming of aforementioned second kind of existing rotor 8, also there is relevant practitioner to research and develop patent of invention case as TaiWan, China application No. 97117819 " motor rotor Motor rotor structure ".Please refer to shown in Figure 3ly, the rotor 9 of this third existing inner rotor motor roughly comprises a rotation axis 91, a magnet 92 and two holders 93.An axis hole 921 is run through in these magnet 92 central authorities, and this axis hole 921 can stretch through for this rotation axis 91, is tight fit between this two holder 93 and this rotation axis 91, and this two holder 93 presss from both sides this magnet 92 to pull and is limited in the predetermined position of this rotation axis 91.Whereby, can utilize the structural design of this two holder 93 equally, can on this rotation axis 91, not come off to guarantee this magnet 92.
Form comparatively simple though the structure of the rotor 9 of this third existing inner rotor motor is formed the structure of more aforementioned second kind of existing rotor 8, should still must additionally be gripped this magnet 92 by existing rotor 9 by this two holder 93, so can provide this magnet 92 comparatively firm in conjunction with effect.Yet, with the R﹠D direction of motor configuration now, all generally direction research and development design such as must more simplify towards easy to assembly and structure, therefore, aforementioned second kind of existing rotor 8 and the third existing rotor 9 still have comparatively shortcoming such as complexity and assembling inconvenience of member, though and aforementioned first kind of existing rotor 7 structure are simplified relatively, just still have shortcomings such as linking steady character is not good between its magnet 72 and this rotation axis 71.Generally speaking, the rotor 7,8,9 of aforementioned various existing inner rotor motors still has the space of improvement.
Summary of the invention
The invention provides a kind of motor rotor,, be its main goal of the invention so that guarantee between a rotation axis and the plastic magnet under condition, still can further to reduce the complicated integral structure degree with preferable linking steady character.
For reaching aforementioned goal of the invention, the technological means that the present invention used and be by the beneficial effect that this technological means can reach:
A kind of motor rotor, it comprises a rotation axis and a plastic magnet.This rotation axis outer peripheral face has a location division, and this location division has a cross section diametrically, and this cross section is non-positive toroidal; This plastic magnet is coated on the outer peripheral face of this rotation axis with injection molding method, and between the formed internal perisporium of this plastic magnet and this location division mutually clip combine.Whereby, can guarantee that this plastic magnet can not come off on this rotation axis, and have many effects such as to promote linking steady character, reduction structure complexity and ease of assembly.
Described location division can be the structures such as formed several axial grooves of outer peripheral face, a matsurface or at least one depression plane of this rotation axis; Whereby, when making this plastic magnet utilize injection molding method to be coated on the outer peripheral face of this rotation axis, can form more firm clip bonding state between the formed internal perisporium of this plastic magnet and this location division.
Described plastic magnet comprises a plastic cement collar and a plastic magnet ring, this plastic cement collar is coated on the outer peripheral face of this rotation axis, between the formed internal perisporium of this plastic cement collar and this location division mutually clip combine, this plastic magnet ring is coated on the outer peripheral face of this plastic cement collar, and between the formed internal perisporium of this plastic magnet ring and this fixed part mutually clip combine; Whereby, make the only part of this plastic magnet ring of this plastic magnet, made with plastic material mixing magnetic, so can further reach the effect that reduces material cost.
The outer peripheral face of the described plastic cement collar forms a fixed part, and this fixed part also has a cross section diametrically, and this cross section is non-positive toroidal, between the formed internal perisporium of this plastic cement collar and this fixed part mutually clip combine; Whereby, make have between this plastic cement collar and the plastic magnet ring firm in conjunction with effect.
Beneficial effect of the present invention is: have the firm effect that combines between plastic magnet and this rotation axis; In addition, guaranteeing to have under the condition of preferable linking steady character between this rotation axis and this plastic magnet, still can further reduce the complicated integral structure degree, and can effectively promote the overall package convenience.
Description of drawings
Fig. 1: the assembled sectional view of the rotor of first kind of existing inner rotor motor.
Fig. 2: the assembled sectional view of the rotor of second kind of existing inner rotor motor.
Fig. 3: the assembled sectional view of the rotor of the third existing inner rotor motor.
Fig. 4: the assembled sectional view of the motor rotor of first embodiment of the invention.
Fig. 5: the stereo appearance figure of the rotation axis of the motor rotor of first embodiment of the invention.
Fig. 6: the schematic cross-section of the location division of the rotation axis of the motor rotor of first embodiment of the invention.
Fig. 7: the assembled sectional view of the motor rotor of second embodiment of the invention.
Fig. 8: the stereo appearance figure of the rotation axis of the motor rotor of second embodiment of the invention.
Fig. 9: the assembled sectional view of the motor rotor of third embodiment of the invention.
Figure 10: the stereo appearance figure of the rotation axis of the motor rotor of third embodiment of the invention.
Figure 11: the assembled sectional view of the motor rotor of fourth embodiment of the invention.
The main element symbol description:
1,2,3,4 rotors 10,10a, 10b, 10c rotation axis
111 axial grooves, 12 location divisions, 11 location divisions, 121 matsurfaces
131 depression 14 location divisions 20, plane, 13 location divisions, 20a plastic magnet
The 21 plastic cement collars, 211 fixed parts, 22 plastic magnet rings, 7 rotors
71 rotation axiss, 72 magnet, 721 axis holes, 8 rotors
81 rotation axiss, 82 magnet cramps, 821 catching grooves, 83 magnet
84 magnet pads, 9 rotors, 91 rotation axiss, 92 magnet
921 axis holes, 93 holders
Embodiment
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and conjunction with figs. are described in detail below:
Please refer to Fig. 4 and shown in Figure 5, motor rotor of the present invention comprises a rotation axis 10 and a plastic magnet 20 at least.The outer peripheral face of this rotation axis 10 has a location division 11, this location division 11 mainly is for these plastic magnet 20 combinations, and this location division 11 has a cross section diametrically, this cross section is non-positive toroidal, for example: can form protuberance design (as raised line or salient point), recess arrangement (as groove, depression or shrinkage pool) or the matsurface design structures such as (as the embossing lines) of different shape in the outer peripheral face of this rotation axis 10, be non-positive toroidal so that make this cross section diametrically, location division 11; This plastic magnet 20 is preferable made with plastic material mixing magnetic, whereby, this plastic magnet 20 can utilize injection molding method to be coated on the outer peripheral face of this rotation axis 10, assembling convenience with effective lifting motor rotor of the present invention, then form the clip bonding state between this plastic magnet 20 and this location division 11, guaranteeing that this plastic magnet 20 can not come off arbitrarily or rotate on this rotation axis 10, and also can effectively simplify the structure complexity of motor rotor of the present invention.
By the said structure design concept, motor rotor of the present invention roughly can be divided into following several different execution modes:
Please refer to Fig. 4,5 and shown in Figure 6, be first kind of enforcement state of rotor 1 of the present invention, this rotor 1 comprises a rotation axis 10 and a plastic magnet 20.The outer peripheral face of this rotation axis 10 has a location division 11, this location division 11 forms several axial grooves 111 in the outer peripheral face of this rotation axis 10, respectively this axial groove 111 has a spacing each other respectively, so that utilize the respectively design of this axial groove 111, making this cross section diametrically, location division 11 is non-positive toroidal.Whereby, when this plastic magnet 20 utilizes injection molding method to be coated on the outer peripheral face of this rotation axis 10, can form the clip bonding state between each axial groove 111 of these plastic magnet 20 formed internal perisporiums and this location division 11, with guarantee this plastic magnet 20 not relatively this rotation axis 10 rotate arbitrarily, and can prevent effectively that also this plastic magnet 20 from coming off on this rotation axis 10.
Please refer to Fig. 7 and shown in Figure 8, be second kind of enforcement state of rotor 2 of the present invention, this rotor 2 comprises a rotation axis 10a and a plastic magnet 20.The outer peripheral face of this rotation axis 10a has a location division 12, and this location division 12 forms a matsurface 121 in the outer peripheral face of this rotation axis 10a, so that utilize the design of this matsurface 121, making this cross section diametrically, location division 12 is non-positive toroidal.Whereby, when this plastic magnet 20 utilizes injection molding method to be coated on the outer peripheral face of this rotation axis 10a, can form the clip bonding state between the matsurface 121 of these plastic magnet 20 formed internal perisporiums and this location division 12, with guarantee this plastic magnet 20 not relatively this rotation axis 10a rotate arbitrarily, and can prevent effectively that equally this plastic magnet 20 from coming off on this rotation axis 10a.
Please refer to Fig. 9 and shown in Figure 10, be the third enforcement state of rotor 3 of the present invention, this rotor 3 comprises a rotation axis 10b and a plastic magnet 20.The outer peripheral face of this rotation axis 10b has a location division 13, this location division 13 forms at least one depression plane 131 in the outer peripheral face of this rotation axis 10b, it is two that embodiment as shown in the figure then discloses this depression plane 131, so that utilize the design on this at least one depression plane 131, making this cross section diametrically, location division 13 is non-positive toroidal.Whereby, when this plastic magnet 20 utilizes injection molding method to be coated on the outer peripheral face of this rotation axis 10b, can form the clip bonding state between at least one depression plane 131 of these plastic magnet 20 formed internal perisporiums and this location division 13, with guarantee this plastic magnet 20 not relatively this rotation axis 10b rotate arbitrarily, and can prevent effectively that also this plastic magnet 20 from coming off on this rotation axis 10b.
Please refer to shown in Figure 11ly, be the rotor 4 of fourth embodiment of the invention, this rotor 4 comprises a rotation axis 10c and a plastic magnet 20a.The outer peripheral face of this rotation axis 10c has a location division 14, and this cross section diametrically, location division 14 can form non-positive toroidal with reference to aforementioned each embodiment equally.In addition, this plastic magnet 20a comprises a plastic cement collar 21 and a plastic magnet ring 22, wherein this plastic cement collar 21 is made with plastic material, make this plastic cement collar 21 can utilize injection molding method to be coated on the outer peripheral face of this rotation axis 10c, and the preferable fixed part 211 that forms of the outer peripheral face of this plastic cement collar 21, this fixed part 211 also has a cross section diametrically, and this cross section is non-positive toroidal; This plastic magnet ring 22 is made with plastic material mixing magnetic, make this plastic magnet ring 22 can utilize injection molding method to be coated on the outer peripheral face of this plastic cement collar 21, and can form the clip bonding state between these plastic magnet ring 22 formed internal perisporiums and this fixed part 211.Whereby, can guarantee equally this plastic magnet 20a not relatively this rotation axis 10c rotate arbitrarily, and can prevent effectively that also this plastic magnet 20a from coming off on this rotation axis 10c.
Motor rotor of the present invention is when reality is used, this rotor 1,2,3,4 is rotatable in conjunction with a stator (not illustrating) inside, and can be with the installation of in the fan frame (not illustrating), so that drive this rotor 1,2,3,4 spinning movements, and then can constitute an inner rotor motor.In addition, when this rotor 1,2,3,4 in rotary course, owing to can form the clip bonding state between this plastic magnet 20, the formed internal perisporium of 20a and this location division 11,12,13,14, so can guarantee that this plastic magnet 20,20a can not come off on this rotation axis 10,10a, 10b, 10c, and make that this plastic magnet 20,20a can be firm in conjunction with on this rotation axis 10,10a, 10b, the 10c, and not relatively this rotation axis 10,10a, 10b, 10c rotate arbitrarily, so can effectively promote the product quality of this inner rotor motor.
As mentioned above, motor rotor of the present invention mainly is to utilize with plastic material mixing magnetic made plastic magnet 20,20a, cooperate injection molding method this plastic magnet 20,20a to be coated on the outer peripheral face of this rotation axis 10,10a, 10b, 10c again, and be the design of non-positive toroidal by this cross section diametrically, location division 11,12,13,14 further, make to have the firm effect that combines between this plastic magnet 20,20a and this rotation axis 10,10a, 10b, the 10c; In addition, guaranteeing to have under the condition of preferable linking steady character between this rotation axis 10,10a, 10b, 10c and this plastic magnet 20, the 20a, still can further reduce the complicated integral structure degree, and also can effectively promote the overall package convenience.
Claims (6)
1, a kind of motor rotor is characterized in that, it comprises:
A rotation axis, outer peripheral face have a location division, and this location division has a cross section diametrically, and this cross section is non-positive toroidal; And
A plastic magnet is coated on the outer peripheral face of this rotation axis with injection molding method, between the formed internal perisporium of this plastic magnet and this location division mutually clip combine.
2, according to the described motor rotor of claim 1, it is characterized in that: this location division is formed several axial grooves of outer peripheral face of this rotation axis.
3, according to the described motor rotor of claim 1, it is characterized in that: this location division is the formed matsurface of outer peripheral face of this rotation axis.
4, according to the described motor rotor of claim 1, it is characterized in that: this location division is formed at least one the depression plane of the outer peripheral face of this rotation axis.
5, according to claim 1,2,3 or 4 described motor rotors, it is characterized in that: this plastic magnet comprises a plastic cement collar and a plastic magnet ring, this plastic cement collar is coated on the outer peripheral face of this rotation axis, between the formed internal perisporium of this plastic cement collar and this location division mutually clip combine, this plastic magnet ring is coated on the outer peripheral face of this plastic cement collar, the outer peripheral face of this plastic cement collar forms a fixed part, and mutual clip combines between the formed internal perisporium of this plastic magnet ring and this fixed part.
6, according to the described motor rotor of claim 5, it is characterized in that: this fixed part has a cross section diametrically, and this cross section is non-positive toroidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810168325A CN101685991A (en) | 2008-09-26 | 2008-09-26 | Motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810168325A CN101685991A (en) | 2008-09-26 | 2008-09-26 | Motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101685991A true CN101685991A (en) | 2010-03-31 |
Family
ID=42049009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810168325A Pending CN101685991A (en) | 2008-09-26 | 2008-09-26 | Motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101685991A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403808A (en) * | 2010-09-16 | 2012-04-04 | 建准电机工业股份有限公司 | Motor rotor |
| CN103322013A (en) * | 2013-06-28 | 2013-09-25 | 无锡麻德克斯精机有限公司 | Rotary shaft structure of currency processor |
| CN111371218A (en) * | 2020-04-08 | 2020-07-03 | 江苏毅合捷汽车科技股份有限公司 | Rotor and motor |
-
2008
- 2008-09-26 CN CN200810168325A patent/CN101685991A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403808A (en) * | 2010-09-16 | 2012-04-04 | 建准电机工业股份有限公司 | Motor rotor |
| CN103322013A (en) * | 2013-06-28 | 2013-09-25 | 无锡麻德克斯精机有限公司 | Rotary shaft structure of currency processor |
| CN111371218A (en) * | 2020-04-08 | 2020-07-03 | 江苏毅合捷汽车科技股份有限公司 | Rotor and motor |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100331 |