CN202309286U - Motor rotor - Google Patents
Motor rotor Download PDFInfo
- Publication number
- CN202309286U CN202309286U CN2011204832028U CN201120483202U CN202309286U CN 202309286 U CN202309286 U CN 202309286U CN 2011204832028 U CN2011204832028 U CN 2011204832028U CN 201120483202 U CN201120483202 U CN 201120483202U CN 202309286 U CN202309286 U CN 202309286U
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- China
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- dovetail
- magnet steel
- rotor
- arcwall face
- groove
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Abstract
The utility model belongs to the technical field of motors, and more particularly relates to a motor rotor and solving the technical field that the prior art is not reasonable enough in design, and the like. The motor rotor comprises a body formed by stacking a plurality of rotor sheets, wherein the center of the body is provided with a central hole for fixing a rotor shaft, the edge of the body is provided with a plurality of dovetail bodies which are big in outer ends and small in inner ends and uniformly distributed in the circumference direction, a dovetail groove which is small in outer end and big in inner end is formed between the two adjacent dovetail bodies, and a magnetic steel body is arranged in each dovetail groove. The motor rotor is characterized in that: each dovetail body is provided with a groove body which can be used for eliminating a gap between each magnetic steel body and each dovetail body, generated during expansion under the action of external force, and further ensuring that the magnetic steel bodies are fixed in the dovetail grooves. The motor rotor disclosed by the utility model has the advantages of small abnormal sound, strong deformation resistance capability, strong mechanical strength, long service life and the like.
Description
Technical field
The utility model belongs to technical field of motors, especially relates to a kind of rotor body.
Background technology
Stator and rotor are two big main parts of motor, and the rotor of motor is that some rotor punchings are formed by stacking, motor commonly used at present; Its stator adopts coil windings as magnetic pole mostly; And rotor then is provided with magnet steel as magnetic pole in outer rim, and magnet steel directly is bonded on the rotor usually.This motor is after using a period of time, and the special magnet steel Yin Gaowen that is bonded in rotor edge can make it that obscission often takes place in the rotor high-speed rotary course, influences the operate as normal of motor, and useful life is short.
In order to improve this phenomenon, the Chinese patent document discloses a kind of rotor [application number: 200920120283.8; Granted publication number: CN 201466828U], comprise steel ring and and around the magnet steel that fits in its outer surface, the outside of magnet steel is along circumferentially being arranged with at least one retainer ring.This structure, magnet steel is fixing reliable, in the rotor operation process, the magnet steel difficult drop-off.But still exist following deficiency: 1, the rotor of high speed rotating; Above-mentioned scheme causes abnormal sound, noise 2, relative the concentrating of stress easily; A little less than the non-deformability, main fastening structure is that retainer ring 3, mechanical strength are not high, magnet steel technical problem such as come off easily.
The utility model content
The purpose of the utility model is to the problems referred to above, provides a kind of manufacturing simple, and rational in infrastructure, abnormal sound and noise are little, and non-deformability is strong, and mechanical strength is high, the rotor body of long service life.
For achieving the above object; The utility model has adopted following technical proposal: this rotor body; Comprise the body that is formed by stacking by some rotor sheets, the center of this body has the centre bore that is used for fixing armature spindle, and described body outer rim has the little and equally distributed in a circumferential direction dovetail body in big the inner, some outer ends; Form the big dovetail groove in little the inner, outer end between two adjacent dovetail bodies; The magnet steel body is housed in dovetail groove, it is characterized in that, thereby described dovetail body is provided with when by expansion gap between magnet steel body and the dovetail body being eliminated under external force and makes the magnet steel body be fixed on the cell body in the dovetail groove.
Because the dovetail body is provided with cell body; When cell body is expanded under external force, the gap between magnet steel body and the dovetail body is eliminated, so the magnet steel physical efficiency is fixed in the dovetail groove firmly; When rotor body during at high speed rotating; The magnet steel body is not prone to loosening, obscission, has improved the mechanical strength of rotor body, has prolonged the useful life of motor.
Above-mentioned rotor body, the both sides, outer end of described dovetail body have the pin that stops that is buckled in the external foot of magnet steel respectively.
Above-mentioned rotor body, the described medial surface of pin that stops has first arcwall face, and the external foot of described magnet steel has second arcwall face, and described first arcwall face and second arcwall face match.
Owing to stop that the medial surface of pin has first arcwall face, the external foot of magnet steel has second arcwall face, and arcwall face significantly increases the contact-making surface between dovetail body and the magnet steel body; Contact-making surface significantly increases dispersive stress better, when cell body is expanded under external force, dovetail body and magnet steel is shown consideration for closed closely; Promptly first arcwall face and second arcwall face match, and the pin that stops of this moment also is closely buckled in the outer foot of magnet steel body, is fixed on the magnet steel body in the dovetail groove firmly; When rotor body during at high speed rotating; Be difficult for causing the dovetail body deformability in the rotor block high speed rotating process, the magnet steel body does not have basically yet and rocks, and the abnormal sound and the noise of motor significantly reduce.
As another kind of scheme, above-mentioned rotor body, the described medial surface of pin that stops has first inclined-plane, and the external foot of described magnet steel has second inclined-plane, and described first inclined-plane and second inclined-plane match.
Owing to stop that the medial surface of pin has first inclined-plane, the external foot of magnet steel has second inclined-plane, and the inclined-plane significantly increases the contact-making surface between dovetail body and the magnet steel body; Contact-making surface significantly increases dispersive stress better, when cell body is expanded under external force, dovetail body and magnet steel is shown consideration for closed closely; Promptly first inclined-plane and second inclined-plane match, and the pin that stops of this moment also is closely buckled in the outer foot of magnet steel body, is fixed on the magnet steel body in the dovetail groove firmly; When rotor body during at high speed rotating; Be difficult for causing the dovetail body deformability in the rotor block high speed rotating process, the magnet steel body does not have basically yet and rocks, and the abnormal sound and the noise of motor significantly reduce.
Above-mentioned rotor body has the 3rd arcwall face between described dovetail body and the body.
Circular arc and external arc are concentric circles in the above-mentioned rotor body, described magnet steel body, and described magnet steel body is a watt shape.Owing to adopt concentric circles watt shape structure, reduced production cost, improved utilance and production efficiency.
Above-mentioned rotor body is provided with binding agent between described magnet steel body and the dovetail groove.Described dovetail groove bottom is provided with groove, is provided with binding agent in the described groove.Groove can hold more adhesive, through the adhesive effect of binding agent, makes more firm being bonded in the dovetail groove of magnet steel body.
Above-mentioned rotor body, described centre bore are provided with on some and the armature spindle positioning strip breach one to one, and have at least the shape of a breach different with all the other notch geometries.Because wherein a breach is different with other notch geometries, correct fast the accomplishing with the rotor body of armature spindle assembled, improved operating efficiency.
Above-mentioned rotor body, the even some disconnected each other manholes that distribute of circumferencial direction between described dovetail groove and the centre bore.Manhole can play guiding and inhibitory action to the distribution and the trend of the magnetic line of force; Form a closed loop magnetic field; And the gas in the motor body is accomplished through manhole and the circulation of ambient atmos; Reach self cooling purpose, also reduced simultaneously the temperature of motor, overcome Yin Gaowen and technical difficulty that the magnet steel body is come off.
Above-mentioned rotor body, the outer surface of described magnet steel body with stop that the outer surface of pin is positioned on the same circumference.
Compared with prior art; The advantage of this rotor body is: 1, owing to adopt cell body; When cell body is expanded under external force, the gap between magnet steel body and the dovetail body is eliminated, make the magnet steel body not be prone to loosening, obscission; Improve the mechanical strength of rotor body, prolonged the useful life of motor.2, owing to adopt arcwall face and inclined-plane, the contact-making surface between dovetail body and the magnet steel body significantly increases, and contact-making surface significantly increases and disperseed stress better, and non-deformability is strong, also reduce motor at work simultaneously abnormal sound and noise.3, owing to adopt manhole, the gas in the motor body reaches self cooling purpose through the circulation of manhole completion with ambient atmos, has also reduced the temperature of motor simultaneously.
Description of drawings
Fig. 1 is embodiment one structural representation that the utility model provides.
Fig. 2 is embodiment two structural representations that the utility model provides.
Fig. 3 is the local structure for amplifying sketch map that the utility model provides.
Among the figure, rotor sheet 1, body 2, centre bore 21, dovetail body 22, dovetail groove 23, magnet steel body 24, gap 25, cell body 221, stop pin 222, the first arcwall face 222a, the second arcwall face 24a, the first inclined-plane 222b, the second inclined-plane 24b, the 3rd arcwall face 26, interior circular arc 24c, external arc 24d, groove 23a, breach 21a, manhole 27.
Embodiment
Below be the specific embodiment of utility model and combine accompanying drawing, the technical scheme of the utility model is done further to describe, but the utility model is not limited to these embodiment.
Embodiment one
Like Fig. 1, shown in 3; This rotor body; Comprise the body 2 that is formed by stacking by some rotor sheets 1; The center of this body 2 has the centre bore 21 that is used for fixing armature spindle, has the little and equally distributed in a circumferential direction dovetail body 22 in big the inner, some outer ends in body 2 outer rims, forms the big dovetail groove 23 in little the inner, outer end between two adjacent dovetail bodies 22; Magnet steel body 24 is housed in dovetail groove 23, thereby makes magnet steel body 24 be fixed on the cell body 221 in the dovetail groove 23 being provided with on the dovetail body 22 when by expansion gap 25 between magnet steel body 24 and the dovetail body 22 being eliminated under external force.Have respectively in the both sides, outer end of dovetail body 22 be buckled in foot outside the magnet steel body 24 stop pin 222.The medial surface that stops pin 222 has the first arcwall face 222a, and magnet steel body 24 outer foots have the second arcwall face 24a, and the above-mentioned first arcwall face 222a and the second arcwall face 24a match.Between dovetail body 22 and body 2, has the 3rd arcwall face 26.
In the present embodiment, owing to stop that the medial surface of pin 222 has the first arcwall face 222a, the external foot of magnet steel has the second arcwall face 24a; Arcwall face significantly increases the contact-making surface between dovetail body 22 and the magnet steel body 24; Contact-making surface significantly increases dispersive stress better, when cell body 221 is expanded under external force, dovetail body 22 and magnet steel body 24 is fitted closely; Promptly the first arcwall face 222a and the second arcwall face 24a match; The pin 222 that stops of this moment also is closely buckled in the outer foot of magnet steel body 24, and magnet steel body 24 is fixed in the dovetail groove 23 firmly, makes it be difficult for becoming flexible, coming off.
The interior circular arc 24c and the external arc 24d of magnet steel body 24 are concentric circles, and this magnet steel body 24 is a watt shape.Between magnet steel body 24 and dovetail groove 23, be provided with binding agent; Be provided with groove 23a in dovetail groove 23 bottoms, be provided with binding agent in the groove 23a.Be provided with on some and the armature spindle positioning strip breach 21a one to one on the centre bore 21, and having at least the shape of a breach 21a different with all the other breach 21a shapes.On body 2, be provided with some equally distributed in a circumferential direction manholes 27.The outer surface of magnet steel body 24 with stop that the outer surface of pin 222 is positioned on the same circumference.
Embodiment two
Like Fig. 2, shown in 3, stop that the medial surface of pin 222 has the first inclined-plane 222b, magnet steel body 24 outer foots have the second inclined-plane 24b, and the above-mentioned first inclined-plane 222b and the second inclined-plane 24b match.In the present embodiment, owing to stop that the medial surface of pin 222 has the first inclined-plane 222b, the external foot of magnet steel has the second inclined-plane 24b; The inclined-plane face significantly increases the contact-making surface between dovetail body 22 and the magnet steel body 24; Contact-making surface significantly increases dispersive stress better, when cell body 221 is expanded under external force, dovetail body 22 and magnet steel body 24 is fitted closely; Promptly the first inclined-plane 222b and the second inclined-plane 24b match; The pin 222 that stops of this moment also is closely buckled in the outer foot of magnet steel body 24, and magnet steel body 24 is fixed in the dovetail groove 23 firmly, makes it be difficult for becoming flexible, coming off.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Although the possibility of using other term do not got rid of in terms such as this paper has used rotor sheet 1, body 2, centre bore 21, dovetail body 22, dovetail groove 23, magnet steel body 24, gap 25, cell body 221, stops pin 222, the first arcwall face 222a, the second arcwall face 24a, the first inclined-plane 222b, the second inclined-plane 24b, the 3rd arcwall face 26, interior circular arc 24c, external arc 24d, groove 23a, breach 21a, manhole 27 morely.Using these terms only is in order to describe and explain the essence of the utility model more easily; It all is contrary with the utility model spirit being construed to any additional restriction to them.
Claims (10)
1. rotor body; Comprise the body (2) that is formed by stacking by some rotor sheets (1); The center of this body (2) has the centre bore (21) that is used for fixing armature spindle; Described body (2) outer rim has the little and equally distributed in a circumferential direction dovetail body (22) in big the inner, some outer ends; Form the big dovetail groove (23) in little the inner, outer end between adjacent two dovetail bodies (22); Magnet steel body (24) is housed in dovetail groove (23), it is characterized in that, described dovetail body (22) is provided with when under external force by expansion, can make the gap (25) between magnet steel body (24) and the dovetail body (22) thereby eliminate and makes magnet steel body (24) be fixed on the cell body (221) in the dovetail groove (23).
2. rotor body according to claim 1 is characterized in that, the both sides, outer end of described dovetail body (22) have respectively be buckled in the outer foot of magnet steel body (24) stop pin (222).
3. rotor body according to claim 2; It is characterized in that; The described medial surface of pin (222) that stops has first arcwall face (222a), and the outer foot of described magnet steel body (24) has second arcwall face (24a), and described first arcwall face (222a) matches with second arcwall face (24a).
4. rotor body according to claim 2; It is characterized in that; The described medial surface of pin (222) that stops has first inclined-plane (222b), and the outer foot of described magnet steel body (24) has second inclined-plane (24b), and described first inclined-plane (222b) matches with second inclined-plane (24b).
5. according to claim 2 or 3 or 4 described rotor bodies, it is characterized in that having the 3rd arcwall face (26) between described dovetail body (22) and the body (2).
6. according to claim 1 or 2 or 3 or 4 described rotor bodies, it is characterized in that the interior circular arc (24c) of described magnet steel body (24) is a concentric circles with external arc (24d), described magnet steel body (24) is a watt shape.
7. rotor body according to claim 6 is characterized in that, is provided with binding agent between described magnet steel body (24) and the dovetail groove (23); Described dovetail groove (23) bottom is provided with groove (23a), is provided with binding agent in the described groove (23a).
8. rotor body according to claim 6 is characterized in that, described centre bore (21) is provided with on some and the armature spindle positioning strip breach (21a) one to one, and has at least the shape of a breach (21a) different with all the other breach (21a) shape.
9. rotor body according to claim 6 is characterized in that, described body (2) is provided with some equally distributed in a circumferential direction manholes (27).
10. rotor body according to claim 2 is characterized in that, the outer surface of described magnet steel body (24) with stop that the outer surface of pin (222) is positioned on the same circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204832028U CN202309286U (en) | 2011-11-15 | 2011-11-15 | Motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204832028U CN202309286U (en) | 2011-11-15 | 2011-11-15 | Motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202309286U true CN202309286U (en) | 2012-07-04 |
Family
ID=46378099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204832028U Expired - Fee Related CN202309286U (en) | 2011-11-15 | 2011-11-15 | Motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202309286U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412645A (en) * | 2011-11-15 | 2012-04-11 | 颜东红 | Motor rotor body |
| CN103248156A (en) * | 2013-05-20 | 2013-08-14 | 山东威斯特车业有限公司 | Anti-drop device for magnetic steel |
-
2011
- 2011-11-15 CN CN2011204832028U patent/CN202309286U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412645A (en) * | 2011-11-15 | 2012-04-11 | 颜东红 | Motor rotor body |
| CN102412645B (en) * | 2011-11-15 | 2014-05-21 | 浦江县合芯电子科技有限公司 | Motor rotor body |
| CN103248156A (en) * | 2013-05-20 | 2013-08-14 | 山东威斯特车业有限公司 | Anti-drop device for magnetic steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20121115 |