CN104753218B - Rotor assembly and with its motor - Google Patents
Rotor assembly and with its motor Download PDFInfo
- Publication number
- CN104753218B CN104753218B CN201510184175.7A CN201510184175A CN104753218B CN 104753218 B CN104753218 B CN 104753218B CN 201510184175 A CN201510184175 A CN 201510184175A CN 104753218 B CN104753218 B CN 104753218B
- Authority
- CN
- China
- Prior art keywords
- magnet ring
- cooperation section
- rotor assembly
- armature spindle
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a kind of rotor assembly and there is its motor, the rotor assembly includes：Armature spindle, bushing and magnet ring, the armature spindle have a first end and a second end；The bushing has an axis cooperation section and magnet ring cooperation section, axis cooperation section is sleeved on the first end of the armature spindle and magnet ring cooperation section be located at the armature spindle first end face outside；The magnet ring is sleeved in the magnet ring cooperation section.Rotor assembly according to the present invention by the way that magnet ring is arranged on the phenomenon that magnet ring coordinates in section, magnet ring can be prevented cracking, so as to improve the reliability of rotor assembly, extends the service life of rotor assembly.
Description
Technical field
The present invention relates to technical field of motor manufacture, more particularly, to a kind of rotor assembly and with its motor.
Background technology
In correlation technique, the mode that magnet ring is installed on armature spindle is that interference fit is pressed on armature spindle, and is interference fitted
It can cause the power that magnetic ring inner hole is outwards expanded and crack.When motor, which works, to be rotated, under the influence of centrifugal force, magnet ring cracking
It is increased up and is completely severed, come off from armature spindle, control circuit can not detect rotor-position at this time, cause motor can not work
Make.
The content of the invention
It is contemplated that at least solve one of technical problem in the prior art.For this purpose, one object of the present invention
It is to propose a kind of rotor assembly, the reliability of the rotor assembly is high.
It is another object of the present invention to propose a kind of motor with above-mentioned rotor assembly.
The rotor assembly of embodiment according to a first aspect of the present invention, including：Armature spindle, the armature spindle have first end and
Second end；Bushing, the bushing have an axis cooperation section and magnet ring cooperation section, and axis cooperation section is sleeved on the of the armature spindle
One end and magnet ring cooperation section are located at the outside of the first end face of the armature spindle；And magnet ring, the magnet ring are sleeved on institute
It states in magnet ring cooperation section.
Rotor assembly according to embodiments of the present invention is coordinated in section by the way that magnet ring is arranged on magnet ring, can prevent magnet ring
The phenomenon that cracking, so as to improve the reliability of rotor assembly, extends the service life of rotor assembly.
Optionally, the outer diameter of the axis cooperation section is less than or greater than the outer diameter of magnet ring cooperation section.
Optionally, the internal diameter of the axis cooperation section is more than or less than the internal diameter of magnet ring cooperation section.
Optionally, the groove of neighbouring magnet ring cooperation section is formed on the internal perisporium of the axis cooperation section.
Still optionally further, the groove is abutted directly against with magnet ring cooperation section.
Optionally, it is formed with net form groove on the periphery wall of the magnet ring cooperation section.
Optionally, the bushing is metalwork and the magnet ring is nonmetal parts.
Still optionally further, the bushing is copper piece.
Optionally, the length of the magnet ring cooperation section is less than the length that the axis coordinates section in the axial direction of the magnet ring.
The motor of embodiment according to a second aspect of the present invention includes the rotor of above-mentioned first aspect embodiment according to the present invention
Component.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
It obtains substantially or is recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the schematic diagram of rotor assembly according to embodiments of the present invention；
Fig. 2 is the assembling schematic diagram of the bushing and magnet ring shown in Fig. 1；
Fig. 3 is the schematic diagram of bushing shown in Fig. 2；
Fig. 4 is the schematic diagram of motor according to embodiments of the present invention.
Reference numeral：
100：Rotor assembly；
1：Armature spindle；11：First end；111：First end face；12：Second end；
2：Bushing；21：Axis coordinates section；22：Magnet ring coordinates section；23：Groove；
221：Net form groove；3：Magnet ring；4：Rotor；
200：Motor.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that term " " center ", " transverse direction ", " length ", " width ", " thickness ",
" on ", " under ", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " axial direction ", " radial direction ", " circumferential direction " etc.
The orientation or position relationship of instruction are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and letter
Change description rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore be not considered as limiting the invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' "
It is meant that two or more.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
It to be to be connected directly, can also be indirectly connected by intermediary, can be the connection inside two elements.For this field
For technical staff, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Rotor assembly 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 4.Wherein, rotor assembly 100 can be with
For in such as DC brushless motor of motor 200.Certainly, those skilled in the art are appreciated that rotor assembly 100 may be used also
For in permanent magnet synchronous motor.
As shown in Figure 1, the rotor assembly 100 of embodiment according to a first aspect of the present invention, including armature spindle 1, bushing 2 and
Magnet ring 3.
Armature spindle 1 has first end 11 (for example, right end in Fig. 1) and second end 12 (for example, left end in Fig. 1).Tool
For body, for example, referring to Fig. 1, armature spindle 1 is horizontally extending, and armature spindle 1 is equipped with rotor 4, the first end of armature spindle 1
11 and second end 12 respectively be located at rotor 4 the left and right sides.
Bushing 2 has axis cooperation section 21 and magnet ring cooperation section 22, and axis cooperation section 21 is sleeved on the above-mentioned first end of armature spindle 1
11, and magnet ring cooperation section 22 is located at the outside of the first end face 111 (for example, right side in Fig. 1) of armature spindle 1.Here, it is necessary to
Illustrate, " outside " refers to the axial direction along armature spindle 1, the one side of the separate second end 12 of first end face 111.For example, such as
Shown in Fig. 1, axis cooperation section 21 is set on the outer surface of above-mentioned first end 11 of armature spindle 1, and magnet ring cooperation section 22 is located at rotor
The right side of the first end face 111 of axis 1.
The mode that interference fit may be employed with armature spindle 1 for axis cooperation section 21 links into an integrated entity, and so may insure bushing 2
It will not come off with magnet ring 3 from armature spindle 1, but not limited to this.Optionally, bushing 2 is metalwork, for example, bushing 2 is copper piece,
Copper bushing 2 can be integral with plastic packaging with magnet ring 3, and 2 outside of bushing is plastic packaging layer.
Magnet ring 3 is set in magnet ring cooperation section 22.Coordinate as shown in Figure 1, magnet ring 3 is set in magnet ring outside section 22, at this time magnetic
Ring 3 is staggeredly arranged with armature spindle 1 in the axial direction of armature spindle 1.As a result, when axis cooperation section 21 coordinates such as interference with armature spindle 1
During cooperation, due to magnet ring 3 be arranged in magnet ring cooperation section 22 (i.e. bushing 2 compared with armature spindle 1 non-matching part), thus interference
The outside expansive force of matching part, which will not be conducted to magnet ring, coordinates section 22, i.e., the power that magnet ring 3 will not outwards be expanded, so as to magnetic
Cracking risk is not present in ring 3.Optionally, magnet ring 3 is nonmetal parts.
By setting magnet ring 3, the control circuit of motor 200 can determine rotor 4 by detecting the position of magnet ring magnetic pole
Rotor magnetic pole position, so as to correctly to motor 200 stator winding apply electric current.
Rotor assembly 100 according to embodiments of the present invention is coordinated by the way that magnet ring 3 is arranged on magnet ring in section 22, can be to prevent
The phenomenon that only magnet ring 3 is cracking, so as to improve the reliability of rotor assembly 100, extend rotor assembly 100 uses the longevity
Life.
An alternative embodiment according to the present invention, the outer diameter of axis cooperation section 21 are less than or greater than the outer of magnet ring cooperation section 22
Footpath.For example, as shown in Fig. 2, the generally circular tube structure of bushing 2, the outer diameter of magnet ring cooperation section 22 is more than the outer diameter of axis cooperation section 21,
After axis cooperation section 21 is assembled (such as by way of interference fit) to armature spindle 1, outwards expansion becomes axis cooperation section 21
Deformation force will not be transmitted on the magnet ring 3 of magnet ring cooperation section 22 during shape, so as to further prevent magnet ring 3 cracking
The phenomenon that.Certainly, the outer diameter of magnet ring cooperation section 22 is also less than the outer diameter (not shown) of axis cooperation section 21.
The internal diameter of axis cooperation section 21 is more than or less than the internal diameter of magnet ring cooperation section 22.With reference to Fig. 2, the generally pipe of bushing 2
Structure, the internal diameter of magnet ring cooperation section 22 are less than the internal diameter of axis cooperation section 21, (such as are matched somebody with somebody axis cooperation section 21 is assembled by interference
The mode of conjunction) to after on armature spindle 1, axis cooperation section 21 and the deformation of armature spindle 1 will not be conducted to magnet ring cooperation section 22, i.e.,
Magnet ring 3 will not be conducted to, so as to the phenomenon that further preventing magnet ring 3 cracking.Certainly, magnet ring coordinates the internal diameter of section 22 also
The internal diameter (not shown) of axis cooperation section 21 can be more than.
With reference to Fig. 1 and with reference to Fig. 2, axis coordinates the groove 23 that neighbouring magnet ring cooperation section 22 is formed on the internal perisporium of section 21,
Groove 23 is preferably annular groove.Thus, it is possible to the phenomenon that further preventing magnet ring 3 cracking.Further, groove 23
It is abutted directly against with magnet ring cooperation section 22, as shown in Fig. 2, the right side wall of groove 23 and the left side wall of magnet ring cooperation section 22 are put down at this time
Together.
As shown in figure 3, it is formed with net form groove 221 on the periphery wall of magnet ring cooperation section 22.Wherein, net form groove 221 can
Think annular knurl.The friction between magnet ring cooperation section 22 and magnet ring 3 is added as a result, so as to improve between bushing 2 and magnet ring 3
Bonding strength.
Optionally, with reference to Fig. 3, it is less than the length of axis cooperation section 21 in the length of the axial upper magnetic ring cooperation section 22 of magnet ring.
It processes as a result, simple and at low cost.
As shown in figure 4, such as DC brushless motor of motor 200 of embodiment according to a second aspect of the present invention, including basis
The rotor assembly 100 of the above-mentioned first aspect embodiment of the present invention.
Other compositions of motor 200 according to embodiments of the present invention are such as stator and operation is for people in the art
All it is known for member, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment of the present invention or example.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner combine in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
1. a kind of rotor assembly, which is characterized in that including：
Armature spindle, the armature spindle have a first end and a second end；
Bushing, the bushing have axis cooperation section and magnet ring cooperation section, and the axis cooperation section is sleeved on the first of the armature spindle
End and magnet ring cooperation section are located at the outside of the first end face of the armature spindle, are formed on the internal perisporium of the axis cooperation section
The groove of neighbouring magnet ring cooperation section；
The axis cooperation section is linked into an integrated entity with the armature spindle by the way of interference fit；And
Magnet ring, the magnet ring are sleeved in magnet ring cooperation section, and the groove is located at the of the magnet ring and the armature spindle
Between end face.
2. rotor assembly according to claim 1, which is characterized in that the outer diameter of the axis cooperation section is less than or greater than described
Magnet ring coordinates the outer diameter of section.
3. rotor assembly according to claim 1, which is characterized in that the internal diameter of the axis cooperation section is more than or less than described
Magnet ring coordinates the internal diameter of section.
4. rotor assembly according to claim 1, which is characterized in that the groove and magnet ring cooperation section are directly adjacent
It connects.
5. rotor assembly according to claim 1, which is characterized in that be formed with net on the periphery wall of the magnet ring cooperation section
Connected in star.
6. rotor assembly according to claim 1, which is characterized in that the bushing is metalwork and the magnet ring is non-gold
Belong to part.
7. rotor assembly according to claim 6, which is characterized in that the bushing is copper piece.
8. according to the rotor assembly any one of claim 1-7, which is characterized in that described in the axial direction of the magnet ring
The length of magnet ring cooperation section is less than the length of axis cooperation section.
9. a kind of motor, which is characterized in that including the rotor assembly according to any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510184175.7A CN104753218B (en) | 2015-04-16 | 2015-04-16 | Rotor assembly and with its motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510184175.7A CN104753218B (en) | 2015-04-16 | 2015-04-16 | Rotor assembly and with its motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104753218A CN104753218A (en) | 2015-07-01 |
| CN104753218B true CN104753218B (en) | 2018-05-25 |
Family
ID=53592475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510184175.7A Expired - Fee Related CN104753218B (en) | 2015-04-16 | 2015-04-16 | Rotor assembly and with its motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN104753218B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979969B (en) * | 2015-07-07 | 2018-09-11 | 广东威灵电机制造有限公司 | Motor magnet ring, motor and washing machine |
| CN106936238A (en) * | 2015-12-30 | 2017-07-07 | 博世汽车部件(长沙)有限公司 | Magnet ring and the motor with it |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248174A (en) * | 2012-02-03 | 2013-08-14 | 罗伯特·博世有限公司 | Electric machine |
| CN104022589A (en) * | 2014-05-22 | 2014-09-03 | 佛山市威灵洗涤电机制造有限公司 | Motor speed detection and feedback device and motor with motor speed detection and feedback device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3612161B2 (en) * | 1997-01-09 | 2005-01-19 | 株式会社ミツバ | Motor device with rotation detection mechanism |
| CN202488236U (en) * | 2012-03-05 | 2012-10-10 | 镇江苏润电子科技有限公司 | Cracking-resisting speed measurement sensor rotor for full-automatic washing machine |
| JP2013258880A (en) * | 2012-06-14 | 2013-12-26 | Nikon Corp | Detector and motor device |
| JP2014193075A (en) * | 2013-03-28 | 2014-10-06 | Valeo Japan Co Ltd | Motor drive device and electric compressor using the same |
| CN203761206U (en) * | 2014-02-21 | 2014-08-06 | 广东科嘉霖电器制造有限公司 | Dough-kneading machine with Hall control motor rotating speed structure |
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2015
- 2015-04-16 CN CN201510184175.7A patent/CN104753218B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248174A (en) * | 2012-02-03 | 2013-08-14 | 罗伯特·博世有限公司 | Electric machine |
| CN104022589A (en) * | 2014-05-22 | 2014-09-03 | 佛山市威灵洗涤电机制造有限公司 | Motor speed detection and feedback device and motor with motor speed detection and feedback device |
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| Publication number | Publication date |
|---|---|
| CN104753218A (en) | 2015-07-01 |
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| GR01 | Patent grant | ||
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Granted publication date: 20180525 Termination date: 20210416 |