CN106787370A - A kind of modified external rotor electric machine and its production method - Google Patents
A kind of modified external rotor electric machine and its production method Download PDFInfo
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- CN106787370A CN106787370A CN201710195223.1A CN201710195223A CN106787370A CN 106787370 A CN106787370 A CN 106787370A CN 201710195223 A CN201710195223 A CN 201710195223A CN 106787370 A CN106787370 A CN 106787370A
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- wall
- inwall
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- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000001746 injection moulding Methods 0.000 claims description 12
- 238000002788 crimping Methods 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 7
- 230000013011 mating Effects 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 2
- 230000037431 insertion Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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
-
- 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
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
-
- 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
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
- H02K15/028—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots for fastening to casing or support, respectively to shaft or hub
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- 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)
- Motor Or Generator Frames (AREA)
Abstract
The invention provides a kind of modified external rotor electric machine, including：Stator module, rotor assembly, electric machine casing and bearing chamber component, by the second retainer ring in rotor assembly, the setting of the second connecting pole and the 3rd retainer ring and material are the selection of aluminium, improve the efficiency of motor, by the motor inner cap in electric machine casing, the design and material of motor side cover are the selection of steel, improve the bonding strength of motor inner cap, by outer shaft, the matching design of interior axle, interior axle is realized well strengthens hardness, outer shaft reduction hardness, so as to ensure the effect of the stability of work, this kind of modified external rotor electric machine, not only ensure that stability operationally, and can be according to different demands, the different outer shaft of selection, so as to improve the applicability of motor.
Description
Technical field
The present invention relates to a kind of modified external rotor electric machine and its production method.
Background technology
External rotor electric machine of the prior art, has the drawback that：
First, there is certain rule because of the distance between base to load, and motor shaft of the prior art is integrated one,
And link position is, from fixing point, to arrive load again to base, and the motor shaft of such design, length is long, fixing point to base
The motor shaft of this section is simply to play fixed effect, and not very among length of the base to load；
2nd, because motor shaft is integrated setting and if motor shaft hardness is too small, motor can be caused in the process of rotation
In be likely to occur rocking and destroy bearing so as to top pressure effect is played in the edge to bearing, and in the company of motor shaft and load
At socket part, motor hardness is higher then easily disconnected, and to need to carry out milling flat for the end of most motor shafts, therefore also just band motor
Axle is more prone to fracture also easily situation about vibrating in rotary course；
3rd, electric motor end cap is typically chosen using aluminium alloy to ensure electric efficiency, but aluminium alloy with motor shaft fix when
Wait, rigidity is too low, so as to also just bring the too low situation of connection effect, and if selecting hardness electric motor end cap higher,
Have led to the too low situation of electric efficiency.
To sum up, using the teaching of the invention it is possible to provide one ensure electric efficiency on the premise of, can both improve electric motor end cap bonding strength, and
The degree of stability of motor shaft rotation can be improved, and ensures the external rotor electric machine of the bonding strength of motor shaft and motor body just
It is necessary.
The content of the invention
The technical problem to be solved in the present invention is：Technical problem of the prior art, the present invention is overcome to provide a kind of improvement
Type external rotor electric machine solves problem above.
The technical solution adopted for the present invention to solve the technical problems is：A kind of modified external rotor electric machine, including from interior
Bearing chamber component, stator module, rotor assembly and the electric machine casing set gradually to outward, the electric machine casing include connection ring,
Outer shaft, interior axle, motor inner cap, fixture and motor side cover, have connection end in the connection ring, the lower end of the outer shaft
Outer wall is fixedly connected with the inwall of the connection end, and the outer wall of the upper end of the interior axle is fixed with the inwall of the connection ring and connected
Connect, the outer shaft is coaxial with the interior axle, being covered surely in the interior axle of the bottom of the connection ring has the fixture, the electricity
The upper surface of machine inner cap is fixedly connected with the bottom surface of the connection ring, and the inwall of the motor inner cap is outer with the fixture
Wall is fixedly connected, and the upper surface of the motor inner cap is plane and vertical with the interior axle, and the bottom surface of the connection ring is flat
Face and vertical with the interior axle, the bearing chamber assembly set is scheduled in the interior axle, the inwall of the motor side cover with described turn
The side wall of sub- body is fixedly connected and is fitted with the outer wall of the motor inner cap.
Further, the stator module includes stator body, the first retainer ring, the first connecting pole and base ring, described
Stator slot is provided with stator body, first retainer ring is arranged on the top of the stator body, and the base ring is set
In the bottom of the stator body, first connecting pole is arranged in the stator slot, first retainer ring, described first
Connecting pole and the base ring integrated injection molding, the rotor assembly include rotor body, motor enclosing cover, the second retainer ring,
Second connecting pole and the 3rd retainer ring, the motor enclosing cover are arranged on the top of the motor side cover, are covered outside the motor and set
First through hole is equipped with, the second through hole for being provided with and being interconnected with the first through hole, the rotor sheet are covered in the motor
Rotor slot is provided with body, second retainer ring is arranged on the top of the rotor body, and the 3rd retainer ring is arranged on
The bottom of the rotor body, second connecting pole is arranged in the rotor slot, and the motor enclosing cover, described second are fixed
Ring, second connecting pole and the 3rd retainer ring integrated injection molding.
Further, the bearing chamber component includes bottom, bearing chamber body, clutch shaft bearing, middle ring, snap ring, packing ring
And second bearing, the outer wall of bearing chamber body inwall respectively with the base ring, the inwall of the stator body and institute
The inwall laminating of the first retainer ring is stated, the clutch shaft bearing, the middle ring and the second bearing are arranged successively from top to bottom
In the interior axle, the snap ring set be scheduled in the interior axle of the bottom of the second bearing and with the second bearing
Bottom surface is fitted, and the outer wall of the bottom is fixedly connected with the inwall of the base ring.
Further, there is first annular projection on the side wall of the bearing chamber body, it is described first annular raised upper
Portion fits with the bottom surface of the stator body, internal diameter of the first annular raised external diameter more than the stator body.
Further, several locating dowels are offered in the circumference of the bottom of the connection ring, is covered in the motor and set
Location hole is equipped with, the locating dowel is fixed in the location hole.
Further, the top of the bearing chamber body has the second annular protrusion.
Further, the hardness of the outer shaft is 15HRC ~ 30HRC, and the hardness of the interior axle is more than 40HRC.
Further, the material of the motor inner cap and the motor side cover is steel, and the motor enclosing cover, described second are consolidated
The material for determining ring, second connecting pole and the 3rd retainer ring is fine aluminium.
Further, the outer wall of the interior axle is crimped with the inwall of the fixture, the outer wall of the fixture with it is described
The inwall crimping of motor inner cap, the outer wall of the bottom is crimped with the inwall of the base ring.
A kind of production method of modified external rotor electric machine：
S1, the stator body is arranged on mould, then the first retainer ring described in injection moulding, first connecting pole and
The base ring, output stator module；
S2, the motor side cover clip is covered and by the inwall of the motor side cover and the rotor sheet in the motor
The outer wall of body is welded and fixed, and the rotor body is put into mould, and motor enclosing cover, described second are fixed described in injection molded
Ring, second connecting pole and the 3rd retainer ring, output rotor assembly；
S3, the outer shaft inserts mould, connection ring described in injection moulding, then outer shaft described in clamping is with the outer shaft
Benchmark carries out smart car to the inwall that the connection ring is located at below the outer shaft, forms mating surface；
The bottom surface of the upper surface of motor inner cap and the connection ring described in S4, smart car；
S5, the outer wall of the interior axle is crimped into fixation with the inwall of the fixture, by the outer wall of the fixture and the electricity
The inwall crimping of machine inner cap is fixed；
S6, the bearing chamber body filled in stator module, then interior axle is inserted in bearing chamber body and institute is arranged according to this
Clutch shaft bearing, the middle ring and the second bearing are stated, then setting the snap ring prevents interior axle from departing from bearing chamber, then by institute
The outer wall for stating bottom is crimped with the inwall of the base ring；
S7, the upper end that connection ring is set in the interior axle, the outer wall and the mating surface for making the interior axle excessively coordinate, and make electricity
The upper surface of cover is brought into close contact and rivets fixation with the bottom surface of connection ring.
The beneficial effects of the invention are as follows this kind of modified external rotor electric machine of the invention first, is separately set by motor shaft
Outer shaft and interior axle two parts are counted into, it is high to realize interior shaft portion hardness well, the low effect of outer axial portion hardness, so as to improve
Degree of stability of interior shaft portion when work, prevents damage bearing chamber component of interior axle when work.
Secondly, base ring to load make use of by base ring, outer shaft, fixture, interior axle well to the design for loading
Between there is the condition of certain rule, it is cost-effective to a certain extent；
Again and, because the design that separates of outer shaft and interior axle, then interior axle can be standard axle, and outer shaft then can be according to the difference of load
Demand, changed, so as to improve the applicability of this external rotor electric machine；
Then, it is steel by the material of motor cover, improves the bonding strength of motor cover, although reduce the efficiency of motor, but
It is that the material of torus, the second retainer ring, the second connecting pole and the 3rd retainer ring is fine aluminium, so as to compensate for motor cover reduction effect
The effect of rate, so as to improve efficiency to a certain extent；
Finally, by first annular raised setting, seam is formed, coordinates bottom to secure bearing chamber well, by second
The setting of annular protrusion, can play to a certain extent prevent water flow into bearing chamber body in.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structure chart of the preferred embodiment of a modification of the present invention type external rotor electric machine；
Fig. 2 is the structure chart of the preferred embodiment of a modification of the present invention type external rotor electric machine；
Fig. 3 is the structured flowchart of the preferred embodiment of connection ring of the invention.
Fig. 4 is the structured flowchart of the preferred embodiment of motor inner cap of the invention.
Fig. 5 is the structured flowchart of the preferred embodiment of motor enclosing cover of the invention.
In figure：1st, connection ring, 2, outer shaft, 3, interior axle, 4, motor inner cap, 5, fixture, 6, motor side cover, 7, stator sheet
Body, the 8, first retainer ring, the 9, first connecting pole, 10, base ring, 11, rotor body, 12, motor enclosing cover, the 13, second retainer ring,
14th, the second connecting pole, the 15, the 3rd retainer ring, 16, bottom, 17, bearing chamber body, 18, clutch shaft bearing, 19, middle ring, 20, card
Ring, 21, packing ring, 22, second bearing, 23, first annular projection, the 24, second annular protrusion, a1, connection end, a2, locating dowel,
A3, location hole, a4, the second through hole, a5, first through hole.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant with the present invention.
As shown in Fig. 1 ~ 5, a modification of the present invention type external rotor electric machine, including the bearing chamber for setting gradually from inside to outside
Component, stator module, rotor assembly and electric machine casing, electric machine casing include connection ring 1, outer shaft 2, interior axle 3, motor inner cap 4, solid
Determine part 5 and motor side cover 6, there is connection end a1, the outer wall of the lower end of outer shaft 2 and the inwall of connection end a1 in connection ring 1
It is fixedly connected, the outer wall of the upper end of interior axle 3 is fixedly connected with the inwall of connection ring 1, outer shaft 2 is coaxial with interior axle 3, connection ring 1
Being covered surely in the interior axle 3 of bottom has fixture 5, and the upper surface of motor inner cap 4 is fixedly connected with the bottom surface of connection ring 1, in motor
The inwall of lid 4 is fixedly connected with the outer wall of fixture 5, and the upper surface of motor inner cap 4 is plane and, connection ring 1 vertical with interior axle 3
Bottom surface be plane and vertical with interior axle 3, bearing chamber assembly set is scheduled in interior axle 3, the inwall and rotor body of motor side cover 6
11 side wall is fixedly connected and is fitted with the outer wall of motor inner cap 4.
Stator module includes stator body 7, the first retainer ring 8, the first connecting pole 9 and base ring 10, is set on stator body 7
Stator slot is equipped with, the first retainer ring 8 is arranged on the top of stator body 7, and base ring 10 is arranged on the bottom of stator body 7, the
One connecting pole 9 is arranged in stator slot, the first retainer ring 8, the first connecting pole 9 and the integrated injection molding of base ring 10, rotor set
Part includes rotor body 11, motor enclosing cover 12, the second retainer ring 13, the second connecting pole 14 and the 3rd retainer ring 15, motor enclosing cover
12 tops for being arranged on motor side cover 6, are provided with first through hole a5 on motor enclosing cover 12, be provided with motor inner cap 4 and first
The second through hole a5 interconnected through hole a4, is provided with rotor slot on rotor body 11, the second retainer ring 13 is arranged on rotor sheet
The top of body 11, the 3rd retainer ring 15 is arranged on the bottom of rotor body 11, and the second connecting pole 14 is arranged in rotor slot, motor
Enclosing cover 12, the second retainer ring 13, the second connecting pole 14 and the integrated injection molding of the 3rd retainer ring 15.First through hole a5 and second leads to
The setting of hole a4 is the injecting hole for being molded.
Bearing chamber component includes bottom 16, bearing chamber body 17, clutch shaft bearing 18, middle ring 19, snap ring 20, the and of packing ring 21
Second bearing 22, the outer wall of bearing chamber body 17 inwall respectively with base ring 10, the inwall of stator body 7 and the first retainer ring
8 inwall laminating, clutch shaft bearing 18, middle ring 19 and second bearing 22 are sequentially sleeved in interior axle 3 from top to bottom, 20 sets of snap ring
It is scheduled in the interior axle 3 of the bottom of second bearing 22 and is fitted with the bottom surface of second bearing 22, the outer wall and base of bottom 16
The inwall of ring 10 is fixedly connected.The setting of the Passscheiben 21 of snap ring 20, can be very good for clutch shaft bearing 17, the middle and of ring 18
Second bearing 20 plays position-limiting action, secondly, it is also possible to play spacing effect for outer shaft 10 and interior axle 15.
There are first annular raised 23, first annular raised 23 top and stator body on the side wall of bearing chamber body 17
7 bottom surface laminating, internal diameter of first annular raised 23 external diameter more than stator body 7.By first annular raised 23 setting,
Seam is formed, can be very good to play the effect of being relatively fixed for stator body 1.
Several locating dowels a2 is offered in the circumference of the bottom of connection ring 1, location hole a3 is provided with motor inner cap 4,
Locating dowel a2 is fixed in location hole a3.
The top of bearing chamber body 17 has the second annular protrusion 24.When external rotor electric machine inclined work, work as water
When penetrating into motor internal, certain water that prevents can be played and penetrated into bearing chamber body 17.
The hardness of outer shaft 2 is 20HRC, and the hardness of interior axle 3 is 80HRC.It is the design of 20HRC that outer shaft 2 uses hardness, can be with
Ensure during rotatably well, prevent because rigidity is too high, and the situation that fragility fractures occurs, secondly, by interior axle 3
Hardness be the design of 80HRC, can be very good to ensure during rotation to occur work because hardness is too low unstable
It is fixed, so as to damage the situation of clutch shaft bearing 18 and second bearing 22.
The material of motor inner cap 4 and motor side cover 6 is steel, motor enclosing cover 12, the second retainer ring 13, the and of the second connecting pole 14
The material of the 3rd retainer ring 15 is fine aluminium.Can be very good to improve the motor inner cap 4, bonding strength of motor side cover 6, by motor
The material of enclosing cover 12, the second retainer ring 13, the second connecting pole 14 and the 3rd retainer ring 15 is the selection of fine aluminium, be can be very good more
Mend because motor inner cap 4, the material of motor side cover 6 causes the situation of electric efficiency reduction for the selection of steel, so as to certain
The efficiency of motor is improved in degree.
The outer wall of interior axle 3 is crimped with the inwall of fixture 5, and the outer wall of fixture 5 is crimped with the inwall of motor inner cap 4, bottom
The outer wall of lid 16 is crimped with the inwall of base ring 10.
A kind of production method of modified external rotor electric machine, it is characterised in that：
S1, stator body 7 is arranged on mould, then injection moulding the first retainer ring 8, the first connecting pole 9 and base ring 10,
Output stator module；
S2, weld by the clip of motor side cover 6 on motor inner cap 4 and by the outer wall of the inwall of motor side cover 6 and rotor body 11
Fixation is connect, rotor body 11 is put into mould, injection molded motor enclosing cover 12, the second retainer ring 13, the and of the second connecting pole 14
3rd retainer ring 15, output rotor assembly；
S3, outer shaft 2 inserts mould, injection moulding connection ring 1, then clamping outer shaft 2, to connection ring 1 on the basis of outer shaft 2
Inwall positioned at the lower section of outer shaft 2 carries out smart car, forms mating surface；
The bottom surface of S4, the upper surface of smart car motor inner cap 4 and connection ring 1；
S5, the outer wall of interior axle 3 is crimped into fixation with the inwall of fixture 5, by the outer wall of fixture 5 and the inwall of motor inner cap 4
Crimping is fixed；
S6, bearing chamber body 17 filled in stator module, then interior axle 3 is inserted in bearing chamber body 17 and is arranged according to this
One bearing 18, middle ring 19 and second bearing 22, then setting snap ring 20 prevents interior axle 3 from departing from bearing chamber, then by bottom 16
Outer wall is crimped with the inwall of base ring 10；
S7, the upper end that connection ring 1 is set in interior axle 3, the outer wall and mating surface for making interior axle 3 excessively coordinate, and make the upper of motor cover
End face is brought into close contact and rivets fixation with the bottom surface of connection ring 1.
The material of the first retainer ring 8, the first connecting pole 9 and base ring 10 can be plastics or aluminium alloy, motor enclosing cover
12nd, the material of the second retainer ring 13, the second connecting pole 14 and the 3rd retainer ring 15 is fine aluminium, the external diameter of bottom 16 and base ring 10
Internal diameter is close-fitting.The material of bearing chamber body 17 can be aluminium alloy, steel or nonmetallic, clutch shaft bearing 18 and second bearing 22
The side wall of inwall and interior axle 3 match somebody with somebody for pine, the outer wall and the close-fitting of bearing chamber body 17 of clutch shaft bearing 18 and second bearing 22.
With above-mentioned according to desirable embodiment of the invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (10)
1. a kind of modified external rotor electric machine, including bearing chamber component, stator module, the rotor assembly for setting gradually from inside to outside
And electric machine casing, it is characterised in that：The electric machine casing includes connection ring（1）, outer shaft（2）, interior axle（3）, motor inner cap（4）、
Fixture（5）With motor side cover（6）, the connection ring（1）It is upper that there is connection end（a1）, the outer shaft（2）Lower end it is outer
Wall and the connection end（a1）Inwall be fixedly connected, the interior axle（3）Upper end outer wall and the connection ring（1）It is interior
Wall is fixedly connected, the outer shaft（2）With the interior axle（3）Coaxially, the connection ring（1）Bottom the interior axle（3）Upper set
Surely there is the fixture（5）, the motor inner cap（4）Upper surface and the connection ring（1）Bottom surface be fixedly connected, it is described
Motor inner cap（4）Inwall and the fixture（5）Outer wall be fixedly connected, the motor inner cap（4）Upper surface be plane
And with the interior axle（3）Vertically, the connection ring（1）Bottom surface for plane and with the interior axle（3）Vertically, the bearing chamber
Assembly set is scheduled on the interior axle（3）On, the motor side cover（6）Inwall and the rotor body（11）Side wall be fixedly connected
And with the motor inner cap（4）Outer wall laminating.
2. modified external rotor electric machine as claimed in claim 1, it is characterised in that：The stator module includes stator body
（7）, the first retainer ring（8）, the first connecting pole（9）And base ring（10）, the stator body（7）On be provided with stator slot, institute
State the first retainer ring（8）It is arranged on the stator body（7）Top, the base ring（10）It is arranged on the stator body
（7）Bottom, first connecting pole（9）It is arranged in the stator slot, first retainer ring（8）, it is described first connection
Post（9）With the base ring（10）Integrated injection molding, the rotor assembly includes rotor body（11）, motor enclosing cover（12）、
Second retainer ring（13）, the second connecting pole（14）With the 3rd retainer ring（15）, the motor enclosing cover（12）It is arranged on the motor
Side cover（6）Top, the motor enclosing cover（12）On be provided with first through hole（a5）, the motor inner cap（4）On be provided with
The first through hole（a5）The second interconnected through hole（a4）, the rotor body（11）On be provided with rotor slot, described
Two retainer rings（13）It is arranged on the rotor body（11）Top, the 3rd retainer ring（15）It is arranged on the rotor body
（11）Bottom, second connecting pole（14）It is arranged in the rotor slot, the motor enclosing cover（12）, it is described second fix
Ring（13）, second connecting pole（14）With the 3rd retainer ring（15）Integrated injection molding.
3. modified external rotor electric machine as claimed in claim 2, it is characterised in that：The bearing chamber component includes bottom
（16）, bearing chamber body（17）, clutch shaft bearing（18）, middle ring（19）, snap ring（20）, packing ring（21）And second bearing（22）,
The bearing chamber body（17）Outer wall respectively with the base ring（10）Inwall, the stator body（7）Inwall and institute
State the first retainer ring（8）Inwall laminating, the clutch shaft bearing（18）, the middle ring（19）With the second bearing（22）From
Top to bottm is sequentially sleeved at the interior axle（3）On, the snap ring（20）Set is scheduled on the second bearing（22）Bottom it is described
Interior axle（3）It is upper and with the second bearing（22）Bottom surface laminating, the bottom（16）Outer wall and the base ring
（10）Inwall be fixedly connected.
4. modified external rotor electric machine as claimed in claim 3, it is characterised in that：The bearing chamber body（17）Side wall on
With first annular projection（23）, the first annular projection（23）Top and the stator body（7）Bottom surface laminating, institute
State first annular projection（23）External diameter be more than the stator body（7）Internal diameter.
5. modified external rotor electric machine as claimed in claim 1, it is characterised in that：The connection ring（1）Bottom circumference
On offer several locating dowels（a2）, the motor inner cap（4）On be provided with location hole（a3）, the locating dowel（a2）It is fixed
In the location hole（a3）In.
6. modified external rotor electric machine as claimed in claim 3, it is characterised in that：The bearing chamber body（17）Top tool
There is the second annular protrusion（24）.
7. the modified external rotor electric machine as described in claim 1 ~ 6 is any, it is characterised in that：The outer shaft（2）Hardness be
15HRC ~ 30HRC, the interior axle（3）Hardness be more than 40HRC.
8. modified external rotor electric machine as claimed in claim 2, it is characterised in that：The motor inner cap（4）With the motor
Side cover（6）Material be steel, the motor enclosing cover（12）, second retainer ring（13）, second connecting pole（14）And institute
State the 3rd retainer ring（15）Material be fine aluminium.
9. modified external rotor electric machine as claimed in claim 1, it is characterised in that：The interior axle（3）Outer wall it is solid with described
Determine part（5）Inwall crimping, the fixture（5）Outer wall and the motor inner cap（4）Inwall crimping, the bottom（16）
Outer wall and the base ring（10）Inwall crimping.
10. the production method of a kind of modified external rotor electric machine as described in claim 1 ~ 9 is any, it is characterised in that：
S1, by the stator body（7）It is arranged on mould, then the first retainer ring described in injection moulding（8）, it is described first connect
Connect post（9）With the base ring（10）, output stator module；
S2, by the motor side cover（6）Clip is in the motor inner cap（4）It is upper and by the motor side cover（6）Inwall with
The rotor body（11）Outer wall be welded and fixed, by the rotor body（11）It is put into mould, motor described in injection molded
Enclosing cover（12）, second retainer ring（13）, second connecting pole（14）With the 3rd retainer ring（15）, output rotor set
Part；
S3, by the outer shaft（2）In insertion mould, connection ring described in injection moulding（1）, then outer shaft described in clamping（2）, with institute
State outer shaft（2）On the basis of to the connection ring（1）Positioned at the outer shaft（2）The inwall of lower section carries out smart car, forms mating surface；
Motor inner cap described in S4, smart car（4）Upper surface and the connection ring（1）Bottom surface；
S5, by the interior axle（3）Outer wall and the fixture（5）Inwall crimping fix, by the fixture（5）Outer wall
With the motor inner cap（4）Inwall crimping fix；
S6, by the bearing chamber body（17）In filling in stator module, then by interior axle（3）Insertion bearing chamber body（17）In simultaneously
The clutch shaft bearing is arranged according to this（18）, the middle ring（19）With the second bearing（22）, then the snap ring is set（20）
Prevent interior axle（3）Depart from bearing chamber, then by the bottom（16）Outer wall and the base ring（10）Inwall crimping；
S7, by connection ring（1）It is set in the interior axle（3）Upper end, make the interior axle（3）Outer wall it is excessive with the mating surface
Coordinate, make the upper surface of motor cover and connection ring（1）Bottom surface be brought into close contact and rivet fixation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195223.1A CN106787370B (en) | 2017-03-29 | 2017-03-29 | Improved outer rotor motor and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195223.1A CN106787370B (en) | 2017-03-29 | 2017-03-29 | Improved outer rotor motor and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106787370A true CN106787370A (en) | 2017-05-31 |
| CN106787370B CN106787370B (en) | 2023-12-08 |
Family
ID=58966603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195223.1A Active CN106787370B (en) | 2017-03-29 | 2017-03-29 | Improved outer rotor motor and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106787370B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064305A (en) * | 2019-12-30 | 2020-04-24 | 深圳市科创兴电机科技有限公司 | Motor casing, brushless DC motor and unmanned aerial vehicle |
| TWI694662B (en) * | 2018-07-23 | 2020-05-21 | 大陸商昆山廣興電子有限公司 | Motor and its rotor |
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| CN201440624U (en) * | 2009-08-31 | 2010-04-21 | 珠海格力电器股份有限公司 | Device for decomposing stress of motor and motor |
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| TWI694662B (en) * | 2018-07-23 | 2020-05-21 | 大陸商昆山廣興電子有限公司 | Motor and its rotor |
| CN111064305A (en) * | 2019-12-30 | 2020-04-24 | 深圳市科创兴电机科技有限公司 | Motor casing, brushless DC motor and unmanned aerial vehicle |
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| Publication number | Publication date |
|---|---|
| CN106787370B (en) | 2023-12-08 |
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