CN106130221A - Rotating shaft, the assembly method of rotating shaft, motor - Google Patents
Rotating shaft, the assembly method of rotating shaft, motor Download PDFInfo
- Publication number
- CN106130221A CN106130221A CN201610641201.9A CN201610641201A CN106130221A CN 106130221 A CN106130221 A CN 106130221A CN 201610641201 A CN201610641201 A CN 201610641201A CN 106130221 A CN106130221 A CN 106130221A
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- Prior art keywords
- shaft part
- magnetic conduction
- rotating shaft
- shaft
- rotating
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 66
- 239000010959 steel Substances 0.000 claims description 66
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention provides a kind of rotating shaft, the assembly method of rotating shaft, motor.Wherein, rotating shaft includes axle sleeve；First shaft part, one end of the first shaft part is positioned at axle sleeve；Second shaft part, one end of the second shaft part is positioned at axle sleeve, is formed and accommodate chamber between the inwall of axle sleeve and the second shaft part, the first shaft part；Magnetic conduction shaft part, is positioned at receiving intracavity；Wherein, the end face of at least one in the first shaft part and the second shaft part is provided with the connecting portion for being connected with magnetic conduction shaft part.This rotating shaft uses syllogic connected mode, has effectively blocked the axial magnetic circuit of rotating shaft, has reduced axial leakage field.This rotating shaft need not the auxiliary of the assembly equipment frock of complexity and installs, and is effectively improved the assembling speed of this rotating shaft.
Description
Technical field
The present invention relates to motor device technical field, in particular to a kind of rotating shaft, the assembly method of rotating shaft, motor.
Background technology
High speed permanent magnet motor rotor structure of the prior art, uses the annular magnetic steel of segmentation, and rotor is also adopted by stagewise
Structure (sees Fig. 1), first the extremity piece 4,5 at segmentation magnet steel 2 and two ends is bound up by the guide rod 3 of a TBE (threaded both ends)
(being worked into each assembly outside dimension consistent), then assembled by sheath 1 disposable thermal.Hot charging is relatively easy, but structure is slightly
Micro-complexity.
Additionally, the high speed permanent magnet motor rotor structure that another kind of the prior art is common, rotor uses monoblock ring
Shape magnet steel (surface-mount type magnet steel), rotor uses a main shaft, protects magnet steel by sheath and transmits moment of torsion.Such high speed rotor is tied
Structure, although used and carried out every magnetic treatment every magnetic baffle plate, but its main shaft is generally permeability magnetic material, the therefore annular at rotor
Magnetic field produced by magnet steel also can form coupling circuit through the bearing rotor of main shaft with both sides, produces the magnetic field of radial direction magnetic bearing
Raw interference, increases the control difficulty of both sides magnetic bearing.
Summary of the invention
Present invention is primarily targeted at offer a kind of rotating shaft, the assembly method of rotating shaft, motor, to solve in prior art
The problem of rotor leakage.
To achieve these goals, according to an aspect of the invention, it is provided a kind of rotating shaft, including: axle sleeve；First axle
Section, one end of the first shaft part is positioned at axle sleeve；Second shaft part, one end of the second shaft part is positioned at axle sleeve, the inwall of axle sleeve and
Formed between two shaft parts, the first shaft part and accommodate chamber；Magnetic conduction shaft part, is positioned at receiving intracavity；Wherein, in the first shaft part and the second shaft part
The end face of at least one on be provided with the connecting portion for being connected with magnetic conduction shaft part.
Further, connecting portion is the connection bump being arranged on the end face of the first shaft part.
Further, connection bump includes: the first linkage section, and one end of the first linkage section is connected with the end face of the first shaft part
Connect；Second end of the second linkage section, the second linkage section and the first linkage section is connected, the first linkage section and/or the second linkage section
Outer peripheral face on be provided with external screw thread.
Further, the first linkage section and the second linkage section are coaxially disposed.
Further, the external diameter of the first linkage section is more than the external diameter of the second linkage section.
Further, the end face of magnetic conduction shaft part offers recess, and recess matches with connection bump.
Further, being provided with step in recess, the inwall of recess is divided into screwed hole section and hole, location section, location by step
The hole wall of hole section fits with the outer peripheral face of connection bump.
Further, toroidal cavity is formed between end face and the step of the first linkage section.
Further, between end face and the bottom of recess of the second linkage section, there is distance.
Further, rotating shaft also includes: magnet steel, magnet steel sheathed with magnetic conduction shaft part on and be positioned at axle sleeve, magnet steel and magnetic conduction
Shaft part radial through matched in clearance.
Further, magnet steel is L1 with the radial clearance of magnetic conduction shaft part, wherein, and 0.05mm≤L1≤0.1mm.
Further, magnet steel end face and the end face flush of magnetic conduction shaft part.
Further, the end face of the first shaft part and the second shaft part and magnetic conduction shaft part passes through matched in clearance.
Further, the first shaft part is L2 with the gap of the first end of magnetic conduction shaft part, wherein, and 0≤L2≤0.1mm, and/
Or, the second shaft part is L3 with the gap of the second end of magnetic conduction shaft part, wherein, and 0≤L3≤0.1mm.
Further, the first shaft part and the second shaft part are that non-magnet material is made.
According to a further aspect in the invention, it is provided that a kind of motor, including rotating shaft, rotating shaft is above-mentioned rotating shaft.
According to a further aspect in the invention, it is provided that the assembly method of a kind of rotating shaft, assembly method is for turning above-mentioned
Axle assembles, and assembly method includes: the connection bump on the first shaft part is connected with magnetic conduction shaft part, then is filled to by magnetic steel sleeve
To form rotating assembly on magnetic conduction shaft part；Load after axle sleeve is heated to preset temperature to the outer surface of rotating assembly, by
It is interior so that the second shaft part abuts against with magnet steel, magnetic conduction shaft part that two shaft parts are filled to axle sleeve；Rotating assembly is after Preset Time cools down, right
Rotating assembly magnetizes process, completes assembling.
Further, during cooling, the first shaft part and the second shaft part are applied axial pre tightening force, until being cooled to
Axial pre tightening force is removed after room temperature.
Further, preset temperature is t, wherein, and 400 DEG C≤t≤500 DEG C.
Further, before magnetic steel sleeve is filled on magnetic conduction shaft part, on the inwall of magnet steel and/or the outer peripheral face of magnetic conduction shaft part
Coating magnet steel glue.
Application technical scheme, rotating shaft includes axle sleeve, the first shaft part, the second shaft part, magnetic conduction shaft part.First shaft part
One end be positioned at axle sleeve, one end of the second shaft part is positioned at axle sleeve, shape between the inwall of axle sleeve and the second shaft part, the first shaft part
Become to accommodate chamber.Magnetic conductive axis section is positioned at receiving intracavity.Wherein, the end face of at least one in the first shaft part and the second shaft part is arranged
There is the connecting portion for being connected with magnetic conduction shaft part.This rotating shaft uses syllogic connected mode, has effectively blocked the axial of rotating shaft
Magnetic circuit, reduces axial leakage field.This rotating shaft need not the auxiliary of the assembly equipment frock of complexity and installs, and is effectively improved this turn
The assembling speed of axle.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of prior art shaft；
Fig. 2 shows the structural representation of the embodiment of the rotating shaft according to the present invention；
Fig. 3 shows the structural representation of the embodiment one of connection bump in Fig. 2；And
Fig. 4 shows the structural representation of the embodiment two of connection bump in Fig. 2.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
10, axle sleeve；20, the first shaft part；30, the second shaft part；40, magnetic conduction shaft part；41, the first linkage section；42, second connects
Section；50, recess；51, step；60, magnet steel.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Combination mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
It should be noted that term used herein above merely to describe detailed description of the invention, and be not intended to restricted root
Illustrative embodiments according to 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 using term " to comprise " in this manual and/or " bag
Include " time, it indicates existing characteristics, step, operation, device, assembly and/or combinations thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that so use
Term can exchange in the appropriate case, in order to presently filed embodiment described herein such as can be with except here
Order beyond those of diagram or description is implemented.Additionally, term " includes " and " having " and their any deformation, it is intended that
It is to cover non-exclusive comprising, such as, contains series of steps or the process of unit, method, system, product or equipment not
Be necessarily limited to those steps or the unit clearly listed, but can include the most clearly listing or for these processes, side
Other step that method, product or equipment are intrinsic or unit.
For the ease of describing, space relative terms here can be used, as " ... on ", " ... top ",
" at ... upper surface ", " above " etc., be used for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms is intended to comprise except the described in the drawings orientation of device
Outside different azimuth in use or operation.Such as, if the device in accompanying drawing is squeezed, then it is described as " at other devices
Part or structure above " or " other devices or structure on " device after will be positioned as " other devices or construct under
Side " or " under other devices or structure ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.This device can also other different modes location (90-degree rotation or be in other orientation), and
And space used herein above described relatively make respective explanations.
Now, the illustrative embodiments according to the application it is more fully described with reference to the accompanying drawings.But, these are exemplary
Embodiment can be implemented by multiple different form, and should not be construed to be limited solely to embodiment party set forth herein
Formula.It should be appreciated that these embodiments are provided so that disclosure herein is thorough and complete, and these are shown
The design of example embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand
The big thickness of layer and region, and make to be presented with like reference characters identical device, thus by omitting, they are retouched
State.
As in figure 2 it is shown, according to one embodiment of present invention, it is provided that a kind of rotating shaft.This rotating shaft includes axle sleeve 10, first
Shaft part 20, the second shaft part 30, magnetic conduction shaft part 40.One end of first shaft part 20 is positioned at axle sleeve 10, the position, one end of the second shaft part 30
In axle sleeve 10, formed between inwall and second shaft part 30, first shaft part 20 of axle sleeve 10 and accommodate chamber.Magnetic conduction shaft part 40 is positioned at appearance
Receive intracavity.Wherein, the end face of at least one in the first shaft part 20 and the second shaft part 30 is provided with for magnetic conduction shaft part 40
The connecting portion connected.
In the present embodiment, this rotating shaft uses syllogic connected mode, has effectively blocked the axial magnetic circuit of rotating shaft, reduces
Axial leakage field.This rotating shaft need not the auxiliary of the assembly equipment frock of complexity and installs, and is effectively improved the assembling of this rotating shaft
Speed.
Wherein, connecting portion is the connection bump being arranged on the end face of the first shaft part 20.By connection bump and magnetic conductive axis
Section 40 connects, it is possible to effectively increase the bonding strength of the first shaft part 20 and magnetic conduction shaft part 40.
Further, connection bump includes the first linkage section 41 and the second linkage section 42.One end of first linkage section 41 with
The end face of the first shaft part 20 is connected.Second linkage section 42 is connected with the second end of the first linkage section 41, the first linkage section 41
Or second linkage section 42 outer peripheral face on be provided with external screw thread (as shown in Figure 3 and Figure 4).Certainly, ensure the first shaft part 20 with
In the case of bonding strength between magnetic conduction shaft part 40 and stability, it is also possible to simultaneously at the first linkage section 41 and the second linkage section
The outer peripheral face of 42 arranges external screw thread (not illustrating in figure) simultaneously.So arrange and can increase by the first shaft part 20 and magnetic conduction further
Stability between shaft part 40, improves the bonding strength between the first shaft part 20 and magnetic conduction shaft part 40.
Preferably, in order to improve the stability of rotating shaft, the first linkage section 41 is coaxially disposed with the second linkage section 42.
Wherein, the external diameter of the first linkage section 41 is more than the external diameter of the second linkage section 42.So arrange and can further function as
Improve the reliability of rotating shaft.
In the present embodiment, the end face of magnetic conduction shaft part 40 offers recess 50, and recess 50 matches with connection bump.So
Setting can improve stability and the reliability of rotating shaft further.Wherein, the outer peripheral face of connection bump is provided with external screw thread, recessed
It is provided with the female thread matched with external screw thread on the inner peripheral surface in portion 50, so can increase the connection of connection bump and recess 50
Stability.
Further, being provided with step 51 in recess 50, the inwall of recess 50 is divided into screwed hole section and location by step 51
Hole section, the hole wall of hole, location section fits with the outer peripheral face of connection bump.Wherein, hole, location section plays the centering work of countershaft
With, the assembly precision that can improve rotating shaft is so set.Preferably, the cross section of hole, location section is circular, certainly, turns in guarantee
On the premise of the assembly precision of axle, the cross section of hole, location section can also be the structure of other shapes.Such as square structure.
Wherein, toroidal cavity (shown in the A in Fig. 3) is formed between end face and the step 51 of the first linkage section 41.So
Setting makes connection bump during precession, it is possible to ensure have enough allowing between connection bump and the table top of step 51
Bit space is (the B place in Fig. 3 so that the end face of the first shaft part 20 can fit with the end face of magnet steel 60 and magnetic conduction shaft part 40
Show).So arrange and can increase the reliability of rotating shaft.
Certainly, in order to improve the reliability of rotating shaft further, by the end face flush of magnet steel 60 end face Yu magnetic conduction shaft part 40
Arrange.
Further, in order to ensure that connection bump can be all in precession recess 50 and enable the end face of the first shaft part 20
Fit with the end face of magnet steel 60 and magnetic conduction shaft part 40, will be provided with between end face and the bottom of recess 50 of the second linkage section 42
Distance (shown in the C in Fig. 3), the scope of this distance can be 0.5 to 1mm.
Rotating shaft also includes magnet steel 60.Magnet steel 60 sheathed with magnetic conduction shaft part 40 on and be positioned at axle sleeve 10, magnet steel 60 and magnetic conduction
Shaft part 40 radial through matched in clearance.Magnet steel 60 is annular magnetic steel, footpath between annular magnetic steel and magnetic conduction core i.e. magnetic conduction shaft part 40
To coordinating for matched in clearance.Wherein, monolateral gap value is L1,0.05mm≤L1≤0.1mm.
For ensureing axially to fit between magnetic conduction core and first shaft part the 20, second shaft part 30, compress, need to make annular magnetic steel with
First shaft part the 20, second shaft part 30 axially contact for gap-contact, gap length controls to be advisable at 0-0.1mm.I.e. first axle
The end face of section 20 and the second shaft part 30 and magnetic conduction shaft part 40 passes through matched in clearance.Concrete, the first shaft part 20 and magnetic conduction shaft part 40
The gap of the first end be L2, wherein, 0≤L2≤0.1mm, the second shaft part 30 with the gap of the second end of magnetic conduction shaft part 40 is
L3, wherein, 0≤L3≤0.1mm.
Preferably, the first shaft part 20 is made for non-magnet material with the second shaft part 30.First shaft part 20 and the second shaft part 30
During high speed rotating, due to the protective effect of axle sleeve 10 so that p-m rotor i.e. rotating shaft can be with safe operation.
Rotating shaft in above-described embodiment can be additionally used in motor device technical field, the most according to another aspect of the present invention,
Providing a kind of motor, including rotating shaft, rotating shaft is the rotating shaft in above-described embodiment.
In the present embodiment, the assembly method of this rotating shaft is: by the connection bump on the first shaft part 20 and magnetic conduction shaft part 40
It is connected, then is filled in magnetic conductive axis section 40 form rotating assembly by magnet steel 60 set.Fill after axle sleeve 10 is heated to preset temperature
Enter to the outer surface of rotating assembly, so that the second shaft part 30 and magnet steel 60, magnetic conductive axis in the second shaft part 30 is filled to axle sleeve 10
Section 40 abuts against.Rotating assembly is after Preset Time cools down, and countershaft assembly magnetizes processs, completes to assemble.Wherein, in cooling
During the first shaft part 20 and the second shaft part 30 are applied axial pre tightening force, until removing axial pretightening after being cooled to room temperature
Power.Preset temperature is t, wherein, and 400 DEG C≤t≤500 DEG C.Before magnet steel 60 set is filled in magnetic conductive axis section 40, in magnet steel 60
Magnet steel glue is coated on the outer peripheral face of wall and magnetic conduction shaft part 40.Can certainly only one of the most wherein upper coating magnet steel glue.Second axle
Section 30 is when assembling, and magnetic conduction core and the second shaft part 30 axial compression, mainly by high intensity axle sleeve 10 interference connection, the second shaft part
30 couple together.
This rotating shaft is high speed permanent magnet motor rotor, by turning the first shaft part 20, axle sleeve 10, annular magnetic steel, magnetic conduction core, the second axle
Section 30 composition.Wherein annular magnetic steel is enclosed within magnetic conduction core.Rotor i.e. rotating shaft is made up of three sections of splicings, utilizes alloy sleeve and three sections
Interference fit between assembly transmits moment of torsion.
The left end of the magnetic conduction core being cased with annular magnetic steel carries out location connection, the first axle by concaveconvex structure and the first shaft part 20
Section 20 is integrally forming with the magnetic conduction core being cased with annular magnetic steel, then by sheath, said modules and the second shaft part 30 has been connected
Come.Magnetic conduction core uses permeability magnetic material, and the section of one end of magnetic conduction core is provided with recess, and recess includes screwed hole and hole, location, ring
Shape magnet steel uses NdFeB material.Due to the magnet steel of parallel magnetization, all magnetic lines of force are by the center of circle the most in one direction, the most flat
OK, so for this annular magnetic steel, for ensureing the magnetic field sine that magnet steel produces, needing to use parallel magnetization.Annular magnetic steel is enclosed within
On magnetic conduction core, and section is the most concordant with the end face at the two ends, left and right of magnetic conduction core around.
Sheath i.e. axle sleeve 10 uses nickel-base alloy, titanium alloy etc materials, sheath and the first shaft part 20, annular magnetic steel, second
Shaft part 30 is interference fit and fit in the right side with the first shaft part 20 and the left side laminating of the second shaft part 30.
During assembling, first magnetic conduction core is carried out location even by concaveconvex structure (recess 50 and connection bump) and the first shaft part 20
Connect, afterwards annular magnetic steel set is installed on magnetic conduction core.Owing to there is gap between annular magnetic steel and magnetic conduction core, need to fill magnet steel
Glue, to fill gap, can coat magnet steel glue at magnet steel inwall or magnetic conduction core outer peripheral face, thus reach the mesh of stationary annular magnet steel
's.Owing to the certralizing ability of concaveconvex structure, the outer peripheral face of annular magnetic steel and the outer peripheral face of the first shaft part 20 overlap, above-mentioned three
(magnetic conduction core, the first shaft part 20, annular magnetic steel) will form a rotor assembly.
Then the alloy sleeve that would be heated to preset temperature is quickly charged with the outer surface of above-mentioned rotor assembly, and rapidly will
Second shaft part 30 installs in above-mentioned alloy sleeve, natural cooling a period of time, completes rotating shaft assembling, finally does entirety and magnetize place
Reason, completes high speed rotating shaft and makes.
Owing to high-speed electric expreess locomotive needs high temperature hot charging sheath, if using the magnet steel magnetized, high temperature can cause magnet steel to demagnetize.
So the magnet steel not magnetized must be used, after bearing has assembled, in entirety, magnet steel is magnetized.
In the present embodiment, recess 50 is circular hole structure, is so capable of first shaft part the 20, second shaft part 30 and leads
The radial direction location of magnetic core, avoids first shaft part the 20, second shaft part 30 and magnetic conduction core that bias occurs as far as possible.Toroidal cavity is axial
Dodge gap, it is ensured that after screw thread screws, contacting of magnetic conduction core and magnet steel and rotating shaft extremity piece (first shaft part the 20, second shaft part 30)
Face is close to, existence very close to each other.If there is the existence in gap herein, the reduction of shaft stiffness can be caused, simultaneously at rotating shaft high-speed rotary
When forwarding raw accident collision, the abnormal problems such as shaft bending can be caused easily, reduce rotating shaft reliability and service life.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (20)
1. a rotating shaft, it is characterised in that including:
Axle sleeve (10)；
First shaft part (20), one end of described first shaft part (20) is positioned at described axle sleeve (10)；
Second shaft part (30), one end of described second shaft part (30) is positioned at described axle sleeve (10), the inwall of described axle sleeve (10)
And formed between described second shaft part (30), described first shaft part (20) and accommodate chamber；
Magnetic conduction shaft part (40), is positioned at described receiving intracavity；
Wherein, the end face of at least one in described first shaft part (20) and described second shaft part (30) is provided with for institute
State the connecting portion that magnetic conduction shaft part (40) connects.
Rotating shaft the most according to claim 1, it is characterised in that described connecting portion is for be arranged at described first shaft part (20)
Connection bump on end face.
Rotating shaft the most according to claim 2, it is characterised in that described connection bump includes:
First linkage section (41), one end of described first linkage section (41) is connected with the end face of described first shaft part (20)；
Second linkage section (42), described second linkage section (42) is connected with the second end of described first linkage section (41), described
It is provided with external screw thread on the outer peripheral face of the first linkage section (41) and/or described second linkage section (42).
Rotating shaft the most according to claim 3, it is characterised in that described first linkage section (41) and described second linkage section
(42) it is coaxially disposed.
Rotating shaft the most according to claim 3, it is characterised in that the external diameter of described first linkage section (41) is more than described second
The external diameter of linkage section (42).
Rotating shaft the most according to claim 5, it is characterised in that the end face of described magnetic conduction shaft part (40) offers recess
(50), described recess (50) matches with described connection bump.
Rotating shaft the most according to claim 6, it is characterised in that be provided with step (51) in described recess (50), described
The inwall of described recess (50) is divided into screwed hole section and hole, location section by rank (51), and the hole wall of hole, described location section is connected with described
Protruding outer peripheral face fits.
Rotating shaft the most according to claim 7, it is characterised in that the end face of described first linkage section (41) and described step
(51) toroidal cavity is formed between.
Rotating shaft the most according to claim 6, it is characterised in that the end face of described second linkage section (42) and described recess
(50) between bottom, there is distance.
Rotating shaft the most according to claim 1, it is characterised in that described rotating shaft also includes:
Magnet steel (60), described magnet steel (60) is sheathed upper with described magnetic conduction shaft part (40) and is positioned at described axle sleeve (10), described magnetic
Steel (60) and described magnetic conduction shaft part (40) radial through matched in clearance.
11. rotating shafts according to claim 10, it is characterised in that described magnet steel (60) and the footpath of described magnetic conduction shaft part (40)
It is L1, wherein, 0.05mm≤L1≤0.1mm to gap.
12. rotating shafts according to claim 10, it is characterised in that described magnet steel (60) end face and described magnetic conduction shaft part (40)
End face flush.
13. rotating shafts according to claim 1, it is characterised in that described first shaft part (20) and described second shaft part (30)
Matched in clearance is passed through with the end face of described magnetic conduction shaft part (40).
14. rotating shafts according to claim 13, it is characterised in that described first shaft part (20) and described magnetic conduction shaft part (40)
The gap of the first end be L2, wherein, 0≤L2≤0.1mm, and/or, described second shaft part (30) and described magnetic conduction shaft part (40)
The gap of the second end be L3, wherein, 0≤L3≤0.1mm.
15. rotating shafts according to claim 1, it is characterised in that described first shaft part (20) and described second shaft part (30)
Make for non-magnet material.
16. 1 kinds of motors, including rotating shaft, it is characterised in that described rotating shaft is turning according to any one of claim 1 to 15
Axle.
The assembly method of 17. 1 kinds of rotating shafts, described assembly method is for entering the rotating shaft according to any one of claim 1 to 15
Luggage is joined, it is characterised in that described assembly method includes:
Described connection bump on described first shaft part (20) is connected with described magnetic conduction shaft part (40), then magnet steel (60) is overlapped
It is filled on described magnetic conduction shaft part (40) to form rotating assembly；
Load to the outer surface of described rotating assembly after described axle sleeve (10) is heated to preset temperature, by the second shaft part (30)
It is filled to axle sleeve (10) interior so that described second shaft part (30) abuts against with described magnet steel (60), described magnetic conduction shaft part (40)；
Described rotating assembly through Preset Time cool down after, processs that described rotating assembly is magnetized, complete assemble.
18. assembly methods according to claim 17, it is characterised in that to described first shaft part during cooling
(20) and described second shaft part (30) apply axial pre tightening force, until removing axial pre tightening force after being cooled to room temperature.
19. assembly methods according to claim 17, it is characterised in that described preset temperature is t, wherein, 400 DEG C≤t
≤500℃。
20. assembly methods according to claim 17, it is characterised in that described magnet steel (60) set is filled to described magnetic conduction shaft part
(40), before upper, the inwall of described magnet steel (60) and/or the outer peripheral face of described magnetic conduction shaft part (40) coat magnet steel glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610641201.9A CN106130221A (en) | 2016-08-04 | 2016-08-04 | Rotating shaft, the assembly method of rotating shaft, motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610641201.9A CN106130221A (en) | 2016-08-04 | 2016-08-04 | Rotating shaft, the assembly method of rotating shaft, motor |
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| CN205945286U (en) * | 2016-08-04 | 2017-02-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Pivot and have its motor |
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| DE2354955A1 (en) * | 1973-11-02 | 1975-05-07 | Reinhold Gulde | Electromotor with two independently rotating rotors - has two independently rotating housings connected by third commutator assembly |
| CN101405161A (en) * | 2006-03-23 | 2009-04-08 | 丰田自动车株式会社 | Power transmission device and method of assembling the same |
| CN101895181A (en) * | 2009-05-22 | 2010-11-24 | 应德贵 | Disc permanent magnet thin shell type shielding device |
| CN101893133A (en) * | 2010-08-19 | 2010-11-24 | 中国航空工业第六一八研究所 | Connection structure of valve element of direct drive servo valve and connecting rod |
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Effective date of registration: 20181102 Address after: No. six, Qianshan Jinji West Road, Zhuhai, Guangdong Province Applicant after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Address before: 519070 9 Building (Science and technology building) 789 Jinji Road, Qianshan, Zhuhai, Guangdong Applicant before: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI |
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Application publication date: 20161116 |