CN207353936U - Magnet ring, rotor and motor - Google Patents
Magnet ring, rotor and motor Download PDFInfo
- Publication number
- CN207353936U CN207353936U CN201721380339.4U CN201721380339U CN207353936U CN 207353936 U CN207353936 U CN 207353936U CN 201721380339 U CN201721380339 U CN 201721380339U CN 207353936 U CN207353936 U CN 207353936U
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- ring body
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- magnetic part
- ring
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model provides a kind of magnet ring, rotor and motor, wherein, magnet ring includes：First ring body, the first ring body are cyclic structure, and the first ring body includes the first magnetic part, and the first magnetic part has magnetism；Second ring body, the second ring body are cyclic structure, and the end of the second ring body is in contact with the end of the first ring body, and the second ring body includes the second magnetic part, and the second magnetic part has magnetism, has angle between the second magnetic part and the first magnetic part.By technical solution provided by the utility model, it can solve the problems, such as that the cogging torque of motor of the prior art is excessive.
Description
Technical field
Technical field of motors is the utility model is related to, in particular to a kind of magnet ring, rotor and motor.
Background technology
When cogging torque is machine winding no power, what is produced due to the magnetic pull between the stator and rotor of motor is turned
Square.Cogging torque is the important parameter of motor, its numerical value is smaller, and the control accuracy of motor is higher, therefore motor is to cogging torque
It is more demanding.For example, the control accuracy of servomotor is high, performance is good, the requirement higher to cogging torque.
In order to reduce the cogging torque of motor, there is a kind of technical solution that magnet ring is set in motor in the prior art, but
Be motor cogging torque it is still higher.
Utility model content
The utility model provides a kind of magnet ring, rotor and motor, to solve the cogging torque of motor of the prior art
The problem of excessive.
To solve the above-mentioned problems, one side according to the present utility model, the utility model provide a kind of magnet ring, bag
Include：First ring body, the first ring body are cyclic structure, and the first ring body includes the first magnetic part, and the first magnetic part has magnetism；Second ring
Body, the second ring body are cyclic structure, and the end of the second ring body is in contact with the end of the first ring body, and the second ring body includes the second magnetic
Part, the second magnetic part have magnetism, have angle between the second magnetic part and the first magnetic part.
Further, the first ring body includes multiple first magnetic parts, and multiple first magnetic parts are suitable along the circumferencial direction of the first ring body
Secondary connection, the second ring body include multiple second magnetic parts, and multiple second magnetic parts are sequentially connected with along the circumferencial direction of the second ring body, multiple
Second magnetic part is corresponded with multiple first magnetic parts and set, and the second magnetic part and the first magnetic part being correspondingly arranged are V-shaped.
Further, the first magnetic part has first side, and two neighboring first magnetic part is connected by first side, the
There is the first angle between one side and the axis of the first ring body.
Further, the value of the first angle is α, and the value range of α is：0 ° of ＜ α≤360 °/z, wherein z are the tooth of stator
The number of groove.
Further, the value of α is 180 °/z.
Further, two neighboring first magnetic part magnetism on the contrary, and/or, the first magnetic part being correspondingly arranged and the second magnetic
Part it is magnetic identical.
Further, the first ring body is an integral structure.
Further, the first ring body has contact surface with the second ring body, and the first ring body is with the second ring body relative to contact surface
Symmetrically.
Further, the first magnet ring is multiple that second magnet ring is multiple, and multiple first magnet rings replace with multiple second magnet rings
Set.
Another aspect according to the present utility model, there is provided a kind of rotor, including magnet ring and shaft, magnet ring are arranged on shaft
On, wherein, magnet ring is the magnet ring of above-mentioned offer.
Further, shaft includes the first shaft part and the second shaft part that ladder is set, and the diameter of the first shaft part is less than second
The diameter of shaft part, magnet ring are set on the first shaft part, and the end face of magnet ring is abutted with the end face of the second shaft part.
Another aspect according to the present utility model, there is provided a kind of motor, including stator and rotor, rotor are arranged on stator
It is interior, wherein, rotor is the rotor of above-mentioned offer.
Using the technical solution of the utility model, the first ring body and the second ring body to contact with each other is set in magnet ring, and
And first ring body include having magnetic first magnetic part, the second ring body includes having magnetic second magnetic part, the second magnetic part and the
There is angle between one magnetic part.After rotor with the magnet ring is set in the stator, due to the second magnetic part and the first magnetic part it
Between there is angle, the magnetic that is produced between the direction of the magnetic pull produced between the second magnetic part and stator and the first magnetic part and stator is drawn
The direction of power is different, and the magnetic pull of such different directions can be offset or partial offset, so as to reduce between stator and rotor
Active force, and then the cogging torque of motor can be reduced.
Brief description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
New schematic description and description is used to explain the utility model, does not form the improper restriction to the utility model.
In the accompanying drawings：
Fig. 1 shows the structure diagram of rotor provided by the utility model；
Fig. 2 shows the axial sectional view of the rotor in Fig. 1；
Fig. 3 shows the structure diagram of the first ring body in magnet ring；
Fig. 4 shows the radial cross-section of the rotor in Fig. 1；
Fig. 5 shows another structure diagram of rotor provided by the utility model；
Fig. 6 shows the axial sectional view of the rotor in Fig. 5.
Wherein, above-mentioned attached drawing is marked including the following drawings：
10th, the first ring body；11st, the first magnetic part；20th, the second ring body；21st, the second magnetic part；30th, shaft；31st, the first shaft part；
32nd, the second shaft part.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.Based on the embodiment in the utility model, those of ordinary skill in the art are not having
All other embodiments obtained under the premise of creative work are made, shall fall within the protection scope of the present invention.
As shown in Figures 1 to 6, the embodiment of the utility model provides a kind of magnet ring, which includes the first ring body 10
With the second ring body 20.Wherein, the first ring body 10 is cyclic structure, and the first ring body 10 includes the first magnetic part 11, and the first magnetic part 11 has
It is magnetic.Second ring body 20 is cyclic structure, and the end of the second ring body 20 is in contact with the end of the first ring body 10, the second ring body
20 include the second magnetic part 21, and the second magnetic part 21 has magnetism, and has angle between the second magnetic part 21 and the first magnetic part 11.
Using the technical solution of the present embodiment, the first ring body 10 and the second ring body 20 to contact with each other is set in magnet ring,
And the first ring body 10 includes having magnetic first magnetic part 11, the second ring body 20 includes having magnetic second magnetic part 21, the
There is angle between two magnetic parts 21 and the first magnetic part 11.After rotor with the magnet ring is set in the stator, due to the second magnetic
There is angle, the direction of the magnetic pull produced between the second magnetic part 21 and stator and the first magnetic part between 21 and first magnetic part 11 of part
The direction of the magnetic pull produced between 11 and stator is different, and the magnetic pull of such different directions can be offset or partial offset, from
And reduce the active force between stator and rotor, and then the cogging torque of motor can be reduced.
Technical solution through this embodiment, can reduce the cogging torque of motor, so that the control accuracy of motor is improved,
But also the torque ripple of motor can be reduced, so as to reduce the vibration of motor and noise, improve motor performance.By magnet ring
It is arranged to the first ring body 10 and the second ring body 20 can also be easy to the assembling of magnet ring and the shaft of rotor, so as to improve assembling essence
Degree, reduces production cost.
Specifically, the first ring body 10 includes multiple first magnetic parts 11, circumference of multiple first magnetic parts 11 along the first ring body 10
Direction is sequentially connected with, and the second ring body 20 includes multiple second magnetic parts 21, circumference side of multiple second magnetic parts 21 along the second ring body 20
To being sequentially connected with, multiple second magnetic parts 21 are corresponded with multiple first magnetic parts 11 and set, the second magnetic part 21 being correspondingly arranged with
First magnetic part 11 is V-shaped.By setting multiple first magnetic parts 11 and multiple second magnetic parts 21, and by multiple second magnetic parts 21 with
Multiple first magnetic parts 11, which correspond, to be set, and can so have the second magnetic part 21 and the of multipair mutual cooperation in circumferencial direction
One magnetic part 11, so that the magnetic pull produced on the diverse location of magnet ring circumferencial direction can be offset or partial offset, so that
The uniform force of rotor and stator, reduces the cogging torque of motor.
As shown in figure 3, the first magnetic part 11 has first side, two neighboring first magnetic part 11 is coordinated by first side and connected
Connect, there is the first angle between the axis of first side and the first ring body 10.The first magnetic part 11 can be tilted using such a scheme
It is arranged in the first ring body 10, in order to produce angle between the first magnetic part 11 and the second magnetic part 21.So that the first magnetic part 11
The magnetic pull that the magnetic pull of generation and the second magnetic part 21 produce is offset.Moreover, the first magnetic part 11 has two first sides, two
First side is parallel to each other, and being arranged such can make multiple first magnetic parts 11 have identical structure, consequently facilitating the first ring body 10
Manufacture and magnetize.But also the first ring body 10 uniform force in a circumferential direction can be made, so as to further reduce electricity
The cogging torque of machine.
As shown in figure 3, the value of the first angle is α, and the value range of α is 0 ° of ＜ α≤360 °/z, and wherein z is stator
Teeth groove number.The value of α is set to the cogging torque for, being conducive to reduce motor within this range.
Preferably, the value of α can be arranged to 180 °/z in the present embodiment, so can preferably plays reduction teeth groove
The effect of torque.
Correspondingly, the second magnetic part 21 has second side, and two neighboring second magnetic part 21 is connected by second side,
There is the first angle between the axis of second side and the first ring body 10.The second magnetic part 21 can be obliquely installed using such a scheme
In the first ring body 10, in order to produce angle between the second magnetic part 21 and the first magnetic part 11.So that the second magnetic part 21 produces
Magnetic pull and the first magnetic part 11 produce magnetic pull offset.Moreover, the second magnetic part 21 has two second sides, two second
Side is parallel to each other, and being arranged such can make multiple second magnetic parts 21 have identical structure, consequently facilitating the system of the second ring body 20
Make and magnetize.But also the second ring body 20 uniform force in a circumferential direction can be made, so as to further reduce motor
Cogging torque.
As shown in figure 3, in the present embodiment, the magnetism of two neighboring first magnetic part 11 in such as figure on the contrary, be arranged alternately
N poles and S poles, can so improve the performance of motor.In the present embodiment, the first magnetic part 11 and the second magnetic part being correspondingly arranged
21 it is magnetic identical, so set, be conducive to make the active force that is produced between the first magnetic part 11 and stator and the second magnetic part 21 with
The active force produced between stator is cancelled out each other or partial offset, so as to reduce the cogging torque of motor.
In the present embodiment, the first ring body 10 can be set and be an integral structure, can so be easy to the first ring body 10
Manufacture, so as to reduce the cost of magnet ring.It is an integral structure moreover, the first ring body 10 is set, the first ring body 10 can be made
Material it is more uniform, so as to improve the qualification rate and performance of product.
Correspondingly, the second ring body 20 can be set and be an integral structure, can so be easy to the manufacture of the second ring body 20,
So as to reduce the cost of magnet ring.It is an integral structure moreover, the second ring body 20 is set, the material of the second ring body 20 can be made more
Add uniformly, so as to improve the qualification rate and performance of product.
In the present embodiment, the first ring body 10 and the second ring body 20 have contact surface, the first ring body 10 and the second ring body 20
It is symmetrical relative to contact surface.So set, on the one hand on the other hand it be able to can make in the first ring body 10 in order to the manufacture of magnet ring
The magnetic pull being subject to preferably is offset with the magnetic pull being subject in the second ring body 20, so as to reduce cogging torque, improves electricity
The performance of machine.
As shown in figure 5, the first magnet ring can be arranged to multiple, the second magnet ring is also configured as multiple, multiple first magnet rings
It is arranged alternately with multiple second magnet rings.So set, the manufacture of magnet ring on the one hand can be easy to, so as to reduce the system of device
This is caused, on the other hand can further reduce the cogging torque of motor, lifts the performance of motor.
As shown in Figures 1 to 6, another embodiment of the utility model provides a kind of rotor, and rotor includes magnet ring and turns
Axis 30, magnet ring are arranged in shaft 30, wherein, magnet ring is the magnet ring that above-described embodiment provides.
Using the technical solution of the present embodiment, the first ring body 10 and the second ring body 20 to contact with each other is set in magnet ring,
And the first ring body 10 includes having magnetic first magnetic part 11, the second ring body 20 includes having magnetic second magnetic part 21, the
There is angle between two magnetic parts 21 and the first magnetic part 11.After the rotor is set in the stator, due to the second magnetic part 21 and first
There is angle between magnetic part 11, the direction of the magnetic pull produced between the second magnetic part 21 and stator and the first magnetic part 11 and stator it
Between the direction of magnetic pull that produces it is different, the magnetic pull of such different directions can be offset or partial offset, so as to reduce stator
Active force between rotor, and then the cogging torque of motor can be reduced, so as to improve the control accuracy of motor.
Moreover, magnet ring is set in shaft 30, concentric effect is good, can make the stress ratio of diverse location on circumferencial direction
It is more uniform, so as to reduce the magnetic pull of one side, reduce cogging torque and improve the control accuracy of motor.In the present embodiment
In, it can first magnetize, be then fitted in shaft 30 to magnet ring, first magnet ring can also be assembled in shaft 30 and then be magnetized.
First magnetic part 11 can be the magnetic part being separately provided, or the magnetic regions formed after magnetizing in the first ring body 10.
Correspondingly, the second magnetic part 21 can be the magnetic part being separately provided, or the magnetic formed after magnetizing in the second ring body 20
Property region.
As shown in Figure 2 and Figure 6, shaft 30 includes the first shaft part 31 and the second shaft part 32 that ladder is set, wherein, first axle
The diameter of section 31 is less than the diameter of the second shaft part 32, and magnet ring is set on the first shaft part 31, the end face of magnet ring and the second shaft part 32
End face abut.Being arranged such can be easy to magnet ring fixed and positioned in shaft 30.
In the present embodiment, there is gap between magnet ring and the first shaft part 31, be so easy to magnet ring through the first shaft part
On 31, magnet ring can be realized by gluing mode with the first shaft part 31 and is reliably connected.For example, can magnet ring and the first shaft part 31 it
Between using anaerobic adhesive of good performance and spray catalyst bonding cure, so as to improve bonding strength.The material of magnet ring can use
The larger permanent-magnet material of magnetic energy product, such as neodymium iron boron, its molding mode can be used to top radiation shaping, can so make magnet ring material one
Cause property is further lifted.The material of shaft 30 is soft magnetic materials, and such as No. 45 steel, soft magnetic materials can be magnetized by external magnetic field, but
Remove substantially nonmagnetic after external magnetic field, therefore can ensure that magnet ring is more closely attached to the surface of shaft 30.In the present embodiment
In, the axial length of the axial length of magnet ring and the first shaft part 31 can be arranged to identical value, so that both are preferably
Match somebody with somebody.
The another embodiment of the utility model provides a kind of motor, and motor includes stator and rotor, and rotor is arranged on fixed
In son, wherein, rotor is the rotor of above-mentioned offer.In the present embodiment, due to having between the second magnetic part 21 and the first magnetic part 11
There is angle, the magnetic produced between the direction of the magnetic pull produced between the second magnetic part 21 and stator and the first magnetic part 11 and stator is drawn
The direction of power is different, and the magnetic pull of such different directions can be offset or partial offset, so as to reduce between stator and rotor
Active force, and then the cogging torque of motor can be reduced, so as to improve the control accuracy of motor.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the present invention, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Unless specifically stated otherwise, the component and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.At the same time, it should be appreciated that each shown in attached drawing for the ease of description
The size of a part is not to be drawn according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as awarding
Weigh part for specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：It is similar
Label and letter similar terms is represented in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with
It need not be further discussed in attached drawing afterwards.
In the description of the utility model, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " horizontal,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or position relationship be normally based on orientation or position shown in the drawings
Relation is put, description the utility model is for only for ease of and simplifies description, in the case where not making conversely explanation, these nouns of locality
Do not indicate that and imply that the device of meaning or element there must be specific orientation or with specific azimuth configuration and operation, because
This is it is not intended that limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component in itself
Wide is inside and outside.
For the ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that spatially relative term is intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Furthermore, it is necessary to explanation, limits parts, it is only for be easy to using the word such as " first ", " second "
Corresponding parts to be distinguished, do not have Stated otherwise such as, above-mentioned word does not have particular meaning, therefore it is not intended that to this
The limitation of utility model protection scope.
Claims (12)
- A kind of 1. magnet ring, it is characterised in that including：First ring body (10), first ring body (10) are cyclic structure, and first ring body (10) includes the first magnetic part (11), The first magnetic part (11) has magnetism；Second ring body (20), second ring body (20) are cyclic structure, the end and described first of second ring body (20) The end of ring body (10) is in contact, and second ring body (20) includes the second magnetic part (21), and the second magnetic part (21) has magnetic Property, there is angle between the second magnetic part (21) and the first magnetic part (11).
- 2. magnet ring according to claim 1, it is characterised in that first ring body (10) includes multiple first magnetic parts (11), multiple first magnetic parts (11) are sequentially connected with along the circumferencial direction of first ring body (10), second ring body (20) include multiple second magnetic parts (21), multiple second magnetic parts (21) along second ring body (20) circumferencial direction sequentially Connection, multiple second magnetic parts (21) correspond with multiple first magnetic parts (11) and set, described the be correspondingly arranged Two magnetic parts (21) and the first magnetic part (11) are V-shaped.
- 3. magnet ring according to claim 2, it is characterised in that the first magnetic part (11) has a first side, and adjacent two A first magnetic part (11) is connected by the first side, the first side and the axis of first ring body (10) There is the first angle between line.
- 4. magnet ring according to claim 3, it is characterised in that the value of first angle is α, and the value range of α is：0 ° of ＜ α≤360 °/z, wherein z are the number of the teeth groove of stator.
- 5. magnet ring according to claim 4, it is characterised in that the value of α is 180 °/z.
- 6. magnet ring according to claim 2, it is characterised in that the magnetism of the two neighboring first magnetic part (11) on the contrary, And/or the first magnetic part (11) being correspondingly arranged is identical with the magnetism of the second magnetic part (21).
- 7. magnet ring according to claim 1, it is characterised in that first ring body (10) is an integral structure.
- 8. magnet ring according to any one of claim 1 to 7, it is characterised in that first ring body (10) and described the Two ring bodies (20) have contact surface, and first ring body (10) and second ring body (20) are symmetrical relative to the contact surface.
- 9. magnet ring according to claim 1, it is characterised in that first magnet ring is multiple, and second magnet ring is more A, multiple first magnet rings are arranged alternately with multiple second magnet rings.
- 10. a kind of rotor, including magnet ring and shaft (30), the magnet ring are arranged in the shaft (30), it is characterised in that institute State magnet ring of the magnet ring any one of claim 1 to 9.
- 11. rotor according to claim 10, it is characterised in that the shaft (30) includes the first shaft part that ladder is set (31) and the second shaft part (32), the diameter of first shaft part (31) are less than the diameter of second shaft part (32), the magnet ring It is set on first shaft part (31), the end face of the magnet ring is abutted with the end face of second shaft part (32).
- 12. a kind of motor, including stator and rotor, the rotor are arranged in the stator, it is characterised in that the rotor is Rotor described in claim 10 or 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721380339.4U CN207353936U (en) | 2017-10-23 | 2017-10-23 | Magnet ring, rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721380339.4U CN207353936U (en) | 2017-10-23 | 2017-10-23 | Magnet ring, rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207353936U true CN207353936U (en) | 2018-05-11 |
Family
ID=62355799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721380339.4U Active CN207353936U (en) | 2017-10-23 | 2017-10-23 | Magnet ring, rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207353936U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612170A (en) * | 2017-10-23 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnet ring, rotor and motor |
-
2017
- 2017-10-23 CN CN201721380339.4U patent/CN207353936U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612170A (en) * | 2017-10-23 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnet ring, rotor and motor |
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