CN104377856B - Rotor assembly and motor - Google Patents
Rotor assembly and motor Download PDFInfo
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- CN104377856B CN104377856B CN201410665552.4A CN201410665552A CN104377856B CN 104377856 B CN104377856 B CN 104377856B CN 201410665552 A CN201410665552 A CN 201410665552A CN 104377856 B CN104377856 B CN 104377856B
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- iron core
- core split
- insulating component
- axle body
- split
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Abstract
The present invention is applied to machine field, discloses rotor assembly and motor, and rotor assembly includes rotating shaft, the first insulating component, the second insulating component, rotor core and the magnet outside rotor core, and the first insulating component is located between rotor core and magnet；Rotating shaft includes the first axle body and the second axle body being separated from each other, rotor core includes the first iron core split and the second iron core split being separated from each other, first iron core split and the second iron core split are respectively sleeved on the first axle body and the second axle body, and the second insulating component is included located at the axial isolation part between the first iron core split and the second iron core split.The present invention is by the first insulating component and the insulating effect of the second insulating component, the problem of solving motor bearings galvanic corrosion；Meanwhile, it passes through the connection of the connection of the first axle body and the first iron core split, the second axle body and the second iron core split, it is ensured that axially combined power and radial direction adhesion between the first axle body and the second axle body, it is ensured that the reliability of motor operation.
Description
Technical field
The invention belongs to machine field, more particularly to rotor assembly and the motor with the rotor assembly.
Background technology
The problem of in order to solve motor bearings galvanic corrosion, what a kind of existing motor was designed so as to：Rotating shaft is divided into two sections
Axis body is set, and insulating magnet is set on the end of two axis bodies.Although the design can reach two sections of axis bodies of insulation
Purpose, still, due to connecting two sections of axis bodies using insulating magnet so that the axially combined power and radial direction adhesion of two sections of axis bodies are all
It is smaller, so so that when torque is run motor at a high speed or greatly, the phenomenon skidded or even slipped easily occurs in axis body, so that seriously
The operation stability of motor is have impact on, and make it that the design can be only applied on extremely low power motor；Simultaneously as its
Magnet can only use insulating magnet, therefore, which limit the selection range of rotor part.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art there is provided rotor assembly and motor, which solve
How the problem of motor operation stability is ensured under the premise of preventing bearing galvanic corrosion.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：Rotor assembly, including rotating shaft, first insulation structure
Part, the second insulating component, the rotor core being sheathed in the rotating shaft and the magnet outside the rotor core, described first
Insulating component is located between the rotor core and the magnet；The rotating shaft includes the first axle body and the second axle being separated from each other
Body, the rotor core includes the first iron core split and the second iron core split being separated from each other, the first iron core split and institute
State the second iron core split to be respectively sleeved on the first axle body and the second axle body, second insulating component includes being located at institute
State the axial isolation part between the first iron core split and the second iron core split.
Specifically, the center of the first iron core split, which is run through, is provided with the first axis hole, one end of the first axle body
It is arranged in first axis hole；The center of the second iron core split, which is run through, is provided with the second axis hole, the second axle body
One end be arranged in second axis hole.
Preferably, first through hole is provided between the outward flange of the first iron core split and first axis hole, it is described
Second insulating component is also embedded portion including extending be filled in the first through hole first along the axial isolation part.
Preferably, the second through hole is provided between the outward flange of the second iron core split and second axis hole, it is described
Second insulating component is also embedded portion including extending be filled in second through hole second along the axial isolation part.
Specifically, the first iron core split has the first end face back to the second iron core split, second iron
Core split has the second end face back to the first iron core split, and second insulating component also includes being embedded along described first
The first male part and be convexly equipped in second end along second portion of being embedded extension that portion's extension is convexly equipped in the first end face
The second male part on face.
Preferably, the magnet is permanent magnet.
Preferably, the permanent magnet includes several circumferentially spaced magnetic around located at the rotor core periphery
Watt, and there is circumferential spacing between magnetic shoe described in adjacent two, second insulating component also includes prolonging along the axial isolation part
Stretch the circumferentially positioned portion being filled between the circumferential spacing.
Preferably, second insulating component also includes being coated on magnetic shoe described in adjacent two along circumferentially positioned portion's extension
Local outer surface on covering portion.
Preferably, second insulating component uses nylon or PPT plastics integrated injection moldings.
Further, present invention also offers motor, it includes above-mentioned rotor assembly and coordinated with the rotor assembly
Stator module.
Rotor assembly and motor that the present invention is provided, by the way that rotating shaft to be axially divided into the first axle body and the second axle body two parts
Set, rotor core is axially divided into the first iron core split and second iron core split two parts are set, and pass through the first insulation structure
Part completely cuts off rotor core and completely cuts off the first iron core split and the second iron core split with magnet, by the second insulating component, so, passes through
The insulating effect of first insulating component and the second insulating component, can reach the purpose of effectively insulation the first axle body and the second axle body,
Electrically conducting for the first axle body and the second axle body is prevented, a kind of new solution is provided to solve motor bearings galvanic corrosion problems
Scheme.Simultaneously as being all directly just between the first axle body and the first iron core split, between the second axle body and the second iron core split
Property contact connection, and be combined together between the first iron core split and the second iron core split by the second insulating component, therefore, its
Axially combined power and radial direction adhesion between the first axle body and the second axle body is effectively ensured, it is therefore prevented that in motor operation course
Occurs the phenomenon skidded between rotating shaft and rotor core, it is ensured that the reliability of motor operation.In addition, the magnetic in the present invention
Body can also use conductive magnet using insulating magnet, expand the selection range of magnet.
Brief description of the drawings
Fig. 1 is the axis projection schematic diagram of rotor assembly provided in an embodiment of the present invention；
Fig. 2 is the diagrammatic cross-section of A-A in Fig. 1；
Fig. 3 is that rotor assembly provided in an embodiment of the present invention removes the axis projection schematic diagram after rotating shaft；
Fig. 4 is the diagrammatic cross-section of B-B in Fig. 3；
Fig. 5 is the diagrammatic cross-section of C-C in Fig. 4.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It should be noted that when element is referred to as on " being fixed on " or " being arranged at " another element, it can be direct
On another element or it may be simultaneously present centering elements.When an element is known as " connection " another element, it
Can be directly connected to another element or may be simultaneously present centering elements.
As depicted in figs. 1 and 2, rotor assembly provided in an embodiment of the present invention, including rotating shaft 1, the first insulating component 4,
Two insulating components 5, the rotor core 2 being sheathed in rotating shaft 1 and the magnet 3 outside rotor core 2, the first insulating component 4 are set
Between rotor core 2 and magnet 3；Rotating shaft 1 includes the first axle body 11 and the second axle body 12 being separated from each other, and rotor core 2 is wrapped
The the first iron core split 21 and the second iron core split 22 being separated from each other are included, the first iron core split 21 and the second iron core split 22 are distinguished
On the end for being placed on the close the first axle body 11 of the end of the close the second axle body 12 of the first axle body 11 and the second axle body 12, second
Insulating component 5 is included located at the axial isolation part 51 between the first iron core split 21 and the second iron core split 22.The first axle body 11
With clutch shaft bearing (not shown) and second bearing (not shown) are separately installed with the second axle body 12.Specifically, the first iron core point
There is axial spacing, axial isolation part 51 is filled between axial spacing between the iron core split 22 of body 21 and second.Magnet 3 it is interior
There is radial direction spacing, the first insulating component 4 is located between radial direction spacing between surface and the outer surface of rotor core 2.First axle
One end of body 11 and one end of the second axle body 12 are arranged in the first iron core split 21 and the second iron core split 22 and difference respectively
Positioned at the both sides of axial isolation part 51.The embodiment of the present invention, by the way that rotating shaft 1 axially is divided into the first axle body 11 and the second axle body 12
Two parts are set, and rotor core 2 is axially divided into the first iron core split 21 and the two parts of the second iron core split 22 are set, and is passed through
First insulating component 4 completely cuts off rotor core 2 and completely cuts off the first iron core split 21 and the second iron with magnet 3, by the second insulating component 5
Core split 22, so, passes through the first insulating component 4 and the insulating effect of the second insulating component 5 so that the He of the first iron core split 21
Do not electrically conduct the pass that yet do not electrically conducted between relation, the first axle body 11 and the second axle body 12 between second iron core split 22
System, so as to can reach the purpose of effectively insulation the first axle body 11 and the second axle body 12, it is therefore prevented that the first axle body 11 and the second axle body
12 electrically conduct, a kind of new solution is provided to solve motor bearings galvanic corrosion problems.Due to the first axle body 11 with
All it is that direct rigid contact is connected and to lead between first iron core split 21, between the iron core split 22 of the second axle body 12 and second
Connection between electric body, while being combined between the first iron core split 21 and the second iron core split 22 by the second insulating component 5
Together, therefore, axially combined power and radial direction adhesion between the first axle body 11 and the second axle body 12 has been effectively ensured in it, it is therefore prevented that
Occurs the phenomenon skidded in motor operation course between rotating shaft 1 and rotor core 2, it is ensured that the reliability of motor operation.
In addition, the magnet 3 in the embodiment of the present invention can also use conductive magnet 3 using insulating magnet 3, the selection of magnet 3 is expanded
Scope.
In the embodiment of the present invention, by the second insulating component 5 by rotor core 2 with produce voltage inductor (magnet 3)
Isolation, is delivered on rotor core 2 and rotating shaft 1 beneficial to the induced voltage prevented on magnet 3.Simultaneously as voltage has superposition
Effect, therefore, rotating shaft 1 and rotor core 2 are all divided into two parts and set so that the first axle body 11 is constituted with the first iron core split 21
Assembly volume, the iron core split 22 of the second axle body 12 and second composition assembly volume be both less than overall rotating shaft 1 and
The volume for the assembly that integral rotor iron core 2 is combined into, so that the voltage on the first axle body 11 and the second axle body 12 is reduced, and then
The problem of beneficial to bearing galvanic corrosion is solved.
Specifically, as shown in Figure 2-5, the center of the first iron core split 21 is run through to be provided with and coordinated with the first axle body 11
The first axis hole 211 set, one end of the first axle body 11 is arranged in the first axis hole 211；The centre bit of second iron core split 22
Put through provided with the second axis hole 221 being equipped with the second axle body 12, one end of the second axle body 12 is arranged in the second axis hole 221
It is interior.The setting of first axis hole 211, is mainly used in realizing that the first iron core split 21 is inserted in installation on the first axle body 11, and incite somebody to action
First axis hole 211 is located at the center position of the first iron core split 21, beneficial to the structural symmetry for ensureing the first iron core split 21.
The setting of second axis hole 221, is mainly used in realizing that the second iron core split 22 is inserted in installation on the second axle body 12, and by second
Axis hole 221 is located at the center position of the second iron core split 22, beneficial to the structural symmetry for ensureing the second iron core split 22.
Preferably, the aperture of the first axis hole 211 is identical with the aperture of the second axis hole 221, so, divides beneficial to by the first iron core
The iron core split 22 of body 21 and second is set to structure identical part, so that the first iron core split 21 and the second iron core split
22 are only used as a kind of part in a particular application is designed processing, improves the interchangeability of part, and then beneficial to reduction rotor
The number of components of component.
Preferably, first through hole, such as Fig. 2, figure are provided between the outward flange of the first iron core split 21 and the first axis hole 211
Shown in 4 and Fig. 5, the second insulating component 5 also extends be filled in first through hole first including isolation part 51 vertically and is embedded portion
52.First is embedded the setting in portion 52, beneficial to the structural strength and the second insulating component 5 of raising and for improving the second insulating component 5
The adhesion of one iron core split 21.
Preferably, as shown in figure 5, first through hole is provided with multiple, and multiple first through hole are along the circumferential direction uniform at equal intervals
Around being arranged between the outward flange of the first iron core split 21 and the first axis hole 211, first, which is embedded the quantity in portion 52 and first, leads to
The quantity in hole is identical.In the present embodiment, first through hole and first is embedded portion 52 and is preferably set to four, and first is embedded portion 52 in arc
Shape, so, preferably can comprehensively ensure the structural strength of the second insulating component 5 and the structural symmetry of the first iron core split 21.
Of course, in concrete application, first through hole and the first quantity for being embedded portion 52 can also be set to other numerical value.
Preferably, such as Fig. 2 and Fig. 4, lead between the outward flange of the second iron core split 22 and the second axis hole 221 provided with second
Hole, the second insulating component 5 also extends be filled in the second through hole second including isolation part 51 vertically and is embedded portion 53.Second is embedding
If the setting in portion 53, beneficial to the structural strength and the second insulating component 5 of raising and the second iron core split for improving the second insulating component 5
22 adhesion.
Preferably, the second through hole is provided with multiple, and multiple second through holes along the circumferential direction surround and are arranged at the second iron core point
Between the outward flange of body 22 and the second axis hole 221, the position of the position of each second through hole respectively with each first through hole is oppositely arranged,
Second be embedded portion 53 quantity it is identical with the quantity of the second through hole.Preferably, the quantity of first through hole and the quantity of the second through hole
It is identical, and position of the position respectively with each first through hole of each second through hole be oppositely arranged, and so, is on the one hand embedded beneficial to first
Portion 52 and the second shaping for being embedded portion 53, on the other hand beneficial to the structural strength for improving the second insulating component 5.In the present embodiment,
Second through hole is preferably set to four, and second to be embedded portion 53 curved, so, preferably can comprehensively ensure the second insulating component 5
Structural strength and the second iron core split 22 structural symmetry.Of course, in concrete application, the quantity of the second through hole can also be set
For other numerical value.
Specifically, as shown in Figure 2 and Figure 4, the first iron core split 21 has the first end face back to the second iron core split 22,
Second iron core split 22 has the second end face back to the first iron core split 21, and the second insulating component 5 also includes being embedded along first
Portion 52, which extends the first male part 54 being convexly equipped in first end face and is embedded the extension of portion 53 along second, to be convexly equipped in second end face
Second male part 55.The radial dimension of first male part 54 is more than the radial dimension of first through hole, the radial direction of the second male part 55
Size is more than the radial dimension of the second through hole, so so that the axial male part 54 of isolation part 51 and first is stuck in the first iron respectively
The both sides of core split 21, the axial male part 55 of isolation part 51 and second are stuck in the both sides of the second iron core split 22 respectively, effectively protect
The adhesion and the second insulating component 5 and the knot of the second iron core split 22 of the second insulating component 5 and the first iron core split 21 are demonstrate,proved
With joint efforts.The setting of first male part 54 and the second male part 55, beneficial to the further structural strength for improving the second insulating component 5,
And beneficial to the reliability connected between the second insulating component 5 of raising and the first iron core split 21, the second iron core split 22, it is ensured that
Second insulating component 5, the first iron core split 21, the adhesion of the second iron core split 22.
Preferably, magnet 3 is permanent magnet 3, so, beneficial to the reliability for ensureing the magnetic of magnet 3, so that beneficial to guarantee
The stability of motor performance.
Preferably, as shown in Figure 4 and Figure 5, permanent magnet 3 is circumferentially spaced around located at rotor core including several
The magnetic shoe 31 of 2 peripheries, magnetic shoe 31 is in have circumferential spacing between tiles, and adjacent two magnetic shoe 31, and the second insulating component 5 also includes
Isolation part 51 extends the circumferentially positioned portion 56 being filled between circumferential spacing vertically.Magnetic shoe 31 specifically can be by sintered NdFeB material
Material is made, so, beneficial to the magnetic and the strength of materials for ensureing magnetic shoe 31.The setting in circumferentially positioned portion 56, available for magnetic shoe 31
Carry out circumferential spacing, to be positioned beneficial to guarantee magnetic shoe 31 reliability.
Preferably, as shown in Figure 4 and Figure 5, the second insulating component 5 is also coated on adjacent including the extension of circumferentially positioned portion 56
Covering portion 57 on the local outer surface of two magnetic shoes 31.The setting of covering portion 57, is mainly used in that magnetic shoe 31 is coated and fixed, so as to have
Effect ensure that the solid and reliable property that magnetic shoe 31 is installed.Of course, in concrete application, magnetic shoe 31 can also be locked by other means
Fasten.
Preferably, as shown in Fig. 2, Fig. 4 and Fig. 5, the first male part 54 connects circumferentially positioned portion 56 along first end face extension
With covering portion 57, the second male part 55 connects circumferentially positioned portion 56 and covering portion 57 along second end face extension, so so that first
It is connected with each other between male part 54 and circumferentially positioned portion 56, covering portion 57, the second male part 55 and circumferentially positioned portion 56, covering portion
Also it is connected with each other between 57, so that beneficial to the structural strength for improving the second insulating component 5.
Specifically, the first insulating component 4 can be to be coated on outside the outer surface of the first iron core split 21 and the second iron core split 22
Painting insulating layer coating on surface, i.e. the first insulating component 4 using coating method be coated on the first iron core split 21 outer surface and
On the outer surface of second iron core split 22, so, processing technology is simple, easily operated.Of course, in concrete application, first is exhausted
Edge component 4 can be also located on the outer surface of the outer surface of the first iron core split 21 and the second iron core split 22 using other modes,
Such as taken shape in by injection molding manner on the outer surface of the first iron core split 21 and the outer surface of the second iron core split 22.
Preferably, the second insulating component 5 uses nylon or PPT materials (PPT is the material based on high-molecular compound
Material, it includes rubber, plastics, fiber, coating, adhesive and polymer-based composite, and it is made from various reinforcing materials
A kind of composite) integrated injection molding.Nylon and PPT materials all have preferably insulating properties and mechanical property, so, the
Two insulating components 5 are made of nylon or PPT, under the premise of the insulating properties of the second insulating component 5 are ensured, can further be protected
Demonstrate,prove the structural strength of the second insulating component 5.
In specific production, first it can distinguish on the outer surface of the first iron core split 21 and the outer surface of the second iron core split 22
The first insulating component 4 is coated, the first iron core split 21 of the first insulating component 4 is then coated with, is coated with the first insulation structure
Second iron core split 22 of part 4 and magnet 3, which are positioned in injection mold, position and plastic packaging the second insulating component 5 of shaping.
Further, the embodiment of the present invention additionally provides motor, and it includes above-mentioned rotor assembly and matched somebody with somebody with rotor assembly
The stator module of conjunction.Motor provided in an embodiment of the present invention, as a result of above-mentioned rotor assembly, therefore, efficiently solve electricity
The problem of machine bearing galvanic corrosion, and and ensure that the reliability of motor operation, so as to improve the combination property of motor.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent or improvement made within refreshing and principle etc., should be included within the scope of the present invention.
Claims (10)
1. rotor assembly, including rotating shaft, the rotor core that is sheathed in the rotating shaft and the magnet outside the rotor core,
It is characterized in that：Also include the first insulating component and the second insulating component, first insulating component is located at the rotor core
Between the magnet；The rotating shaft includes the first axle body and the second axle body being separated from each other, and the rotor core includes mutual
The the first iron core split and the second iron core split of separation, the first iron core split and the second iron core split are respectively sleeved in institute
State on the first axle body and the second axle body, second insulating component includes being located at the first iron core split and described second
Axial isolation part between iron core split.
2. rotor assembly as claimed in claim 1, it is characterised in that：The center of the first iron core split, which is run through, to be provided with
First axis hole, one end of the first axle body is arranged in first axis hole；The center of the second iron core split is passed through
The second axis hole is equipped with, one end of the second axle body is arranged in second axis hole.
3. rotor assembly as claimed in claim 2, it is characterised in that：In the outward flange of the first iron core split and described the
It is provided with first through hole between one axis hole, second insulating component also includes being filled in described the along the axial isolation part extension
First in one through hole is embedded portion.
4. rotor assembly as claimed in claim 3, it is characterised in that：In the outward flange of the second iron core split and described the
It is provided with the second through hole between two axis holes, second insulating component also includes being filled in described the along the axial isolation part extension
Second in two through holes is embedded portion.
5. rotor assembly as claimed in claim 4, it is characterised in that：The first iron core split has back to second iron
The first end face of core split, the second iron core split has the second end face back to the first iron core split, described second
Insulating component, which also includes extending along first portion of being embedded, is convexly equipped in the first male part in the first end face and along described the
The extension of two portions of being embedded is convexly equipped in the second male part in the second end face.
6. the rotor assembly as described in any one of claim 1 to 5, it is characterised in that：The magnet is permanent magnet.
7. rotor assembly as claimed in claim 6, it is characterised in that：It is circumferentially spaced that the permanent magnet includes several
There is circumferential spacing, second insulation around the magnetic shoe located at the rotor core periphery, and between magnetic shoe described in adjacent two
Component also includes the circumferentially positioned portion being filled in along the axial isolation part extension between the circumferential spacing.
8. rotor assembly as claimed in claim 7, it is characterised in that：It is fixed along the circumference that second insulating component also includes
The extension of position portion is coated on the covering portion on the local outer surface of magnetic shoe described in adjacent two.
9. rotor assembly as claimed in claim 8, it is characterised in that：Second insulating component is moulded using nylon or PPT
Expect integrated injection molding.
10. motor, it is characterised in that：Including the rotor assembly as described in any one of claim 1 to 9 and with the rotor assembly
The stator module of cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665552.4A CN104377856B (en) | 2014-11-19 | 2014-11-19 | Rotor assembly and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665552.4A CN104377856B (en) | 2014-11-19 | 2014-11-19 | Rotor assembly and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104377856A CN104377856A (en) | 2015-02-25 |
| CN104377856B true CN104377856B (en) | 2017-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410665552.4A Active CN104377856B (en) | 2014-11-19 | 2014-11-19 | Rotor assembly and motor |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959374A (en) * | 2017-11-28 | 2018-04-24 | 珠海格力节能环保制冷技术研究中心有限公司 | The rotor assembly and motor of anti-electrocorrosion |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1671025A (en) * | 2004-03-19 | 2005-09-21 | 广东威灵电机制造有限公司 | Permanent magnetic rotor for electromotor and method for making same |
| CN202309274U (en) * | 2011-09-07 | 2012-07-04 | 佛山市威灵洗涤电机制造有限公司 | Motor with permanent magnetic rotor |
| CN204258468U (en) * | 2014-11-19 | 2015-04-08 | 广东威灵电机制造有限公司 | Rotor assembly and motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4989067B2 (en) * | 2005-12-14 | 2012-08-01 | 日本電産テクノモータ株式会社 | Brushless DC motor |
| JP4912752B2 (en) * | 2006-05-30 | 2012-04-11 | 日本電産テクノモータホールディングス株式会社 | motor |
| JP5708267B2 (en) * | 2011-06-03 | 2015-04-30 | ダイキン工業株式会社 | Rotating electric machine and compressor using the same |
-
2014
- 2014-11-19 CN CN201410665552.4A patent/CN104377856B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1671025A (en) * | 2004-03-19 | 2005-09-21 | 广东威灵电机制造有限公司 | Permanent magnetic rotor for electromotor and method for making same |
| CN202309274U (en) * | 2011-09-07 | 2012-07-04 | 佛山市威灵洗涤电机制造有限公司 | Motor with permanent magnetic rotor |
| CN204258468U (en) * | 2014-11-19 | 2015-04-08 | 广东威灵电机制造有限公司 | Rotor assembly and motor |
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| CN104377856A (en) | 2015-02-25 |
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