CN208986700U - Motor - Google Patents
Motor Download PDFInfo
- Publication number
- CN208986700U CN208986700U CN201821480873.7U CN201821480873U CN208986700U CN 208986700 U CN208986700 U CN 208986700U CN 201821480873 U CN201821480873 U CN 201821480873U CN 208986700 U CN208986700 U CN 208986700U
- Authority
- CN
- China
- Prior art keywords
- peripheral surface
- canister portion
- small diameter
- core
- central axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
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
- H02K1/2786—Outer rotors
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- 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
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides motor.Motor has: axis is rotated centered on central axis；Parts of bearings will be pivotally supported as that can rotate；Rotor hub links with axis；Rotor magnet is maintained at the radially inner side of rotor hub；It is opposed with rotor magnet to separate gap in radially inner side for stator；And shell, there is the canister portion for keeping stator on the outside, stator includes cyclic annular core-back；Multiple teeth extend from core-back to radial outside；And coil, conductor wire is wound on tooth and is formed, and core-back includes upper core back, stores parts of bearings in radially inner side；Lower core back, it is opposed with canister portion radially；And small diameter portion, configuration is on the downside of the axial direction at upper core back and on the upside of the axial direction at lower core back, distance from central axis to inner peripheral surface is smaller than upper core back and lower core back, small diameter portion has the recess portion being recessed to radial outside, is accommodated with bonding agent in the gap of canister portion and small diameter portion and in recess portion.
Description
Technical field
The utility model relates to motors.
Background technique
In previous motor, the motor of the so-called outer-rotor type there is known the radial outside in stator configured with magnet.
In the motor of outer-rotor type, it is configured with the component for keeping stator in the radially inner side of stator core, in the assembling of motor
In process, the accessory of assembling is configured.
In recent years, along with the miniaturization of the device equipped with outer rotor motor, it is desirable that make motor path itself.Make
For provide motor outer diameter element, such as have the radial direction of the core-back of the radical length of the tooth of stator core, stator core
Length.
Disclosed in the Japanese Unexamined Patent Publication 1999-089196 bulletin in motor, if the radical length of core-back to be shortened and
Realize the miniaturization of motor, then the configuration of notch can be such that magnetic characteristic declines.On the other hand, if making the depth as shallow of notch,
The protrusion of shell may not engage with the recess portion of stator core.
Utility model content
The purpose of this utility model is to provide the motors that one kind is capable of path, by shell and stator structure tight
Gu without declining magnetic characteristic.
The motor of one embodiment of the illustration of the utility model has axis, parts of bearings, rotor hub, rotor magnetic
Iron, stator and shell.Axis is rotated centered on central axis, is extended up and down relative to central axis.Parts of bearings is by axis branch
It holds as that can rotate.Rotor hub is cup-shaped, is linked with axis, downwardly open.Rotor magnet is maintained at the radial direction of rotor hub
Inside.Stator is located at the radially inner side of rotor magnet, and it is opposed to separate gap with rotor magnet.Shell has keeps stator on the outside
Canister portion.Stator includes cricoid core-back；The multiple teeth extended from the outer circumferential radial outside of core-back；And
Coil made of conductor wire is wound on tooth.Core-back has upper core back, lower core back and small diameter portion.Upper core back
Portion includes the axial upper side end of core-back, stores parts of bearings in radially inner side.Lower core back includes core-back
Axial downside end, it is opposed with canister portion radially.Small diameter portion is configured in the axial downside at upper core back and lower core is carried on the back
The axial upside in portion, from central axis to the distance ratio of the outer peripheral surface of the small diameter portion from the supreme core-back of central axis and lower iron
The distance of the inner peripheral surface at core back is small.Small diameter portion has the recess portion being recessed to radial outside.In the gap of canister portion and small diameter portion
And bonding agent is accommodated in recess portion.
In the above-described embodiment, canister portion includes the 1st canister portion, opposed with small diameter portion radially；And the 2nd canister portion,
Its lower section for being located at the 1st canister portion, the distance ratio from central axis to the outer peripheral surface of the 2nd canister portion is from central axis to the 1st canister portion
Outer peripheral surface distance it is big.2nd canister portion is opposed with lower core back radially.
In the above-described embodiment, the lower surface of the outer ring of parts of bearings and the upper surface of small diameter portion are directly right in the axial direction
It sets or opposed in the axial direction across preloading spring.
In the above-described embodiment, the outer peripheral surface of the 1st canister portion is opposed with the inner peripheral surface of small diameter portion across bonding agent.2nd
The outer peripheral surface of canister portion and the inner peripheral surface at lower core back are fixed by indentation.
In the above-described embodiment, the outer peripheral surface of the 2nd canister portion has in upper end relative to the inclined inclined surface of central axis.
Space is formed between the inner peripheral surface of inclined surface, the lower surface of small diameter portion and upper core back.Configured with viscous in space
Connect at least part of agent.
In the above-described embodiment, canister portion has the 3rd canister portion than the 2nd canister portion position on the lower, from central axis to
The distance of the outer peripheral surface of 3rd canister portion is bigger than the distance from central axis to the outer peripheral surface of the 2nd canister portion.It is configured in the 3rd canister portion
Parts of bearings.
In the above-described embodiment, the outer diameter of rotor hub is 11mm or less.
The motor of illustration according to the present utility model can structurally fasten shell and stator, without keeping magnetic special
Property decline, and motor path can be made.
By the detailed description of the preferred embodiments of the present invention below, referring to attached drawing, it can be more clearly understood that this
Above-mentioned and other feature, element, step, the features and advantages of utility model.
Detailed description of the invention
Fig. 1 is the schematic diagram for showing the section of the motor in the embodiments of the present invention.
Fig. 2 is the core-back of the motor in the embodiments of the present invention and the top view of tooth.
Fig. 3 is for illustrating that winding conductor wire on the tooth of the motor of the embodiments of the present invention forms coil
The figure of process.
Fig. 4 is the partial sectional view for amplifying a part for showing the motor in the embodiments of the present invention.
Fig. 5 be show the motor in the embodiments of the present invention stator be fixed in shell state section view
Figure.
Specific embodiment
Referring to the drawings, the embodiment illustrated of the utility model is described in detail.In the present specification,
Direction shown in FIG. 1 along central axis J is referred to as axial, vertical with central axis J direction and is referred to as radial direction, along in
The direction of circular arc centered on mandrel line J is referred to as circumferential.In addition, in the present specification, it will be axially set as up and down direction, relative to
Motor 10 is using 3 side of rotor hub as upper, to illustrate the shape, positional relationship of each section.But the definition of the up and down direction is simultaneously
The direction of the motor 10 of the utility model when in use is not limited.
Fig. 1 is the integrally-built cross-sectional view for showing the motor 10 of an embodiment of illustration of the utility model.Horse
It is for example equipped on small-sized unmanned aerial vehicle (not shown) up to 10, rotates alar part.In addition, being not limited to the example, motor 10 is for example
It can be equipped on OA equipment or Medical Devices, tool, industrial large scale equipment etc., generate various driving forces.Motor 10 has
Axis 1, parts of bearings 2, rotor hub 3, rotor magnet 4, stator 5 and shell 6.
Axis 1 is rotated centered on central axis J, is extended relative to central axis J or more.Parts of bearings 2 supports axis 1
It can rotate.Parts of bearings 2 is installed in the periphery of axis 1.In the present embodiment, parts of bearings 2 is ball bearing.In addition,
2 parts of bearings 2 are provided in up and down direction.
Rotor hub 3 and axis 1 link, and are downwardly open cup-shapeds.Rotor hub 3 includes cylindric magnet maintaining part
31；Flat part 32 extends from magnet maintaining part 31 to radially inner side；And cylindric linking part 33, from flat part 32
Center in the axial direction downside extend, and along axially through.Rotor hub 3 is fixed at linking part 33 is fixed with axis than axis 1
The upper position in the position of bearing portion part 2.That is, the cylindric inner peripheral surface of linking part 33 passes through bonding agent or indentation and axis 1
Outer peripheral surface mutually fix.
Rotor magnet 4 is maintained at the radially inner side of rotor hub 3.In the present embodiment, rotor magnet 4 is fixed in magnetic
On the inner peripheral surface of iron maintaining part 31.It is opposed that the inner peripheral surface of rotor magnet 4 with stator 5 separates gap radially.Rotor hub 3 with
Rotor magnet 4 is mutually fixed by bonding or indentation.Flat part 32 have along axially through multiple through holes 34.Due to motor 10
Rotation and the hot-air that generates from stator 5 passes through through hole 34 and is discharged to the external of motor 10.
Stator 5 is located at the radially inner side of rotor magnet 4, and it is opposed to separate gap with rotor magnet 4.Stator 5 includes cricoid
Core-back 51；The multiple teeth 52 extended from the outer circumferential radial outside of core-back 51；And conductor wire is wound on tooth 52
Made of coil 53.In the present embodiment, core-back 51 and tooth 52 are by the way that multiple strong magnetic characteristic bodies i.e. sheet metal is laminated
Made of.On tooth 52, insulation coating is carried out at the position and its periphery for being wound with conductor wire.In addition, core-back 51 and tooth
52 can be the dust core being made by using mold to metal powder progress compression forming.
Core-back 51 includes upper core back 511 comprising the axial upper side end of core-back 51；Lower core back
Portion 512 comprising the axial downside end of core-back 51；And small diameter portion 513, configure the axis at upper core back 511
To downside and the axial upside at lower core back 512.Radially inner side at upper core back 511 stores parts of bearings 2.Change speech
It, parts of bearings 2 is direct or is maintained on the inner peripheral surface at upper core back 511 by bonding agent.In the present embodiment, bearing
The lower surface of the outer ring of component 2 is directly or opposed in the axial direction across preloading spring with the upper surface of small diameter portion 513.Lower core
Back 512 and aftermentioned canister portion 61 are opposed radially.
From central axis to the distance ratio of the inner peripheral surface of small diameter portion 513 from the supreme core-back 511 of central axis J and lower iron
The distance of the inner peripheral surface at core back 512 is small.In other words, small diameter portion 513 is than upper core back 511 and lower core back 512 in
Mandrel line J is prominent.
Shell 6, which has, keeps the canister portion 61 of stator 5 in radial outside.Also, shell 6 leans on the downside of axial direction than stator 5
Position has the bearing incorporating section 21 of storage parts of bearings 2.In the present embodiment, the parts of bearings 2 of upside is accommodated in stator 5
Upper core back 511 in, the parts of bearings 2 of downside is accommodated in the bearing incorporating section 21 of shell 6.Canister portion 61 has the 1st
Portion 611, the 2nd canister portion 612 and the 3rd canister portion 613.1st canister portion 611 is opposed with small diameter portion 513 radially.2nd canister portion 612 is located at
The lower section of 1st canister portion 611, from central axis J to the outer peripheral surface of the 2nd canister portion 612 than outer from central axis J to the 1st canister portion 611
The distance of circumferential surface is big, and the 2nd canister portion 612 is opposed with lower core back 512 radially.
3rd canister portion 613 is located at the position than the 2nd canister portion 612 on the lower, from central axis J to the periphery of the 3rd canister portion 613
The distance in face is bigger than the distance from central axis J to the outer peripheral surface of the 2nd canister portion 612.In the present embodiment, bearing incorporating section 21
It is set to the 3rd canister portion 613, is open downwards.That is, being configured with parts of bearings 2 at the 3rd canister portion 613.Parts of bearings 2 is from below
It is accommodated in bearing incorporating section 21.That is, parts of bearings 2 is accommodated in from below in the 3rd canister portion 613.The outer peripheral surface of parts of bearings 2 is logical
It crosses bonding agent and the inner peripheral surface of the 3rd canister portion 613 is mutually fixed.
Fig. 2 is the core-back 51 of the stator 5 in the embodiments of the present invention and the top view of tooth 52.Such as Fig. 2 institute
Show, small diameter portion 513 has the recess portion 514 being recessed to radial outside.Gap and recess portion between canister portion 61 and small diameter portion 513
Bonding agent 11 is accommodated in 514.Thereby, it is possible to firmly fix stator 5 and shell 6.Further, since being set on small diameter portion 513
It is equipped with recess portion 514, therefore is able to suppress because the formation of recess portion 514 causes magnetic characteristic to decline.
Fig. 3 is for illustrating that winding conductor wire on the tooth 52 of the stator 5 in the embodiments of the present invention forms
The figure of the process of coil 53.In the case where rotor hub 3 minimizes, the radial thickness of core-back 51 is also thinning.For example,
In the case where forming coil 53, the protrusion 81 on the pin 8 for being set to coil winding machine is configured in recess portion 514 and is positioned.This
When, if recess portion 514 is arranged on upper core back 511 or lower core back 512, the depth of recess portion 514 may shoal, or
Person may magnetic characteristic decline.In the present embodiment, the outer diameter of rotor hub 3 is in 11mm or less.In such small-sized motor
In 10, if the depth shallower of recess portion 514, the retentivity at recess portion 514 and protrusion 81 reduces, and protrusion 81 may be from recess portion 514
Abjection.In the present embodiment, recess portion 514 is arranged on small diameter portion 513, therefore in small-sized motor 10, can make recess portion
514 depth is deeper.
In the present embodiment, the 2nd canister portion 612 is opposed radially with lower core back 512.Accordingly, for stator 5 with
Fixing means between shell 6, between small diameter portion 513 and the 1st canister portion 611 and at lower core back 512 and the 2nd canister portion
Between 612, it is able to use different methods.In the present embodiment, such as the outer peripheral surface of the 1st canister portion 611 and small diameter portion 513
Inner peripheral surface has gap, and opposed across bonding agent 11 in the gap location.The outer peripheral surface of 2nd canister portion 612 and lower core back
512 inner peripheral surface is fixed by indentation.As a result, for example in the central axis of the inner peripheral surface of small diameter portion 513 and lower core back
In the case that the central axis of 512 inner peripheral surface is staggered, using the 1st canister portion 611 outer peripheral surface and small diameter portion 513 inner peripheral surface it
Between gap adjust the offset, to inhibit the outer peripheral surface of the 1st canister portion 611 to contact with small diameter portion 513 and pair that generates
The stress biased of core-back 51.
Fig. 4 is the partial sectional view for amplifying a part for showing the motor in the embodiments of the present invention.2nd canister portion
612 outer peripheral surface has in upper end relative to the inclined inclined surface 614 central axis J.As a result, in inclined surface 614, small diameter portion
Space 7 is formed between 513 lower surface and the inner peripheral surface at lower core back 512.About between the periphery of the 1st canister portion 611
Bonding agent 11 between face and the inner peripheral surface of small diameter portion 513, when the 1st canister portion 611 is fixed on small diameter portion 513, bonding agent 11
Inflow space 7.That is, being configured at least part of bonding agent 11 in space 7.Thereby, it is possible to inhibit bonding agent 11 to upside
It flows out and is flowed out to 2 side of parts of bearings.
In the present embodiment, the embedding area between the 2nd canister portion 612 and lower core back 512 is located at than the 1st canister portion
Bonding region between 611 and small diameter portion 513 is by axial downside and the position of radial outside.By make the embedding area be located at than
Bonding region between 1st canister portion 611 and small diameter portion 513 is by axial downside and the position of radial outside, thus in assembling stator 5
When with shell 6, bonding agent 11 can be stopped using embedding area, bonding agent 11 can be held in bonding region.That is, can press down
Bonding agent 11 processed is flowed out to the lower section of the 2nd canister portion 612.
In motor 10, by and with indentation with it is Nian Jie, stator 5 and shell 6 can be firmly fixed.In addition, bonding is solid
In fixed, in order to inhibit bonding agent 11 when assembled to flow out, by will be pressed into region configuration than bonding region on the downside of axial direction and
The position of radial outside, bonding agent 11 are maintained in the gap between stator 5 and shell 6, it can be ensured that adhesive strength.
Next, being illustrated to the manufacturing process of the motor 10 in present embodiment.
As described above, the stator 5 that the motor 10 has includes cricoid core-back 51, with central axis J it is
The heart；And multiple teeth 52, they extend from the outer circumferential radial outside of core-back 51.Also, the motor 10 has shell 6,
Shell 6 has the canister portion 61 extended relative to central axis J or more.
As described above, the core-back 51 for the stator 5 that the motor 10 has includes upper core back 511 comprising iron core
The axial upper side end at back 51；Lower core back 512 comprising the axial downside end of core-back 51；And small diameter portion
513, it configures on the downside of the axial direction at upper core back 511 and on the upside of the axial direction at lower core back 512, from central axis J to small
The distance of the inner peripheral surface in diameter portion 513 than inner peripheral surface from the supreme core-back 511 of central axis J and lower core back 512 away from
From small, small diameter portion 513 has the recess portion 514 being recessed to radial outside.
The manufacturing method of motor 10 in present embodiment includes: the process to form coil 53；The canister portion 61 of shell 6 is matched
Set the process on the 1st accessory 91；And stator 5 is fixed on the process in canister portion 61.
Fig. 3 is for illustrating that winding conductor wire on the tooth 52 of the stator 5 in the embodiments of the present invention forms
The figure of the process of coil 53.Protrusion 81 is configured on the pin 8 of coil winding machine.Protrusion 81 on the pin 8 for being set to coil winding machine is consolidated
Due in above-mentioned recess portion 514.Core-back 51 and tooth 52 are located on coil winding machine as a result,.It is rolled up on tooth 52 after positioning
Coil 53 is formed around conductor wire.As noted previously, as recess portion 514 is set on small diameter portion 513, therefore in small-sized motor 10
In also the depth of recess portion 514 can be made deeper.Therefore, it when being installed on coil winding machine, is able to suppress core-back 51 and tooth 52 moves
It is dynamic.
Fig. 5 is to show the stator 5 of the motor 10 in the embodiments of the present invention to be fixed in state on shell 6
Cross-sectional view.The lower section of the canister portion 61 of shell 6 is configured on the upper surface of the 1st accessory 91.From cylinder of the configuration on the 1st accessory 91
Stator 5 is fixed on the radial outside of canister portion 61 by the top in portion 61.At this point, making the lower surface of the 2nd accessory 92 and small diameter portion 513
Upper surface contact.Apply effectively on stator 5 as a result, stator 5 is fixed on the radial outside of canister portion 61.
As described above, carrying out insulation coating at the position and its periphery for being wound with conductor wire on tooth 52.Make it is the 2nd auxiliary
In the case that the lower surface of tool 92 is contacted with the upper surface of the core-back 51 of 53 weeks side of coil, the insulating coating on 53 periphery of coil
It may be contacted with the 2nd accessory 92.In the present embodiment, the lower surface of the 2nd accessory 92 is contacted with the upper surface of small diameter portion 513
To exert a force.Since the 2nd accessory 92 is not contacted with the insulating coating on 53 periphery of coil, it is able to suppress insulating coating removing, becomes
It is thin.
The manufacturing method of motor 10 in present embodiment includes preparing the process of canister portion 61, and canister portion 61 includes the 1st canister portion
611, it is opposed with small diameter portion 513 radially；And the 2nd canister portion 612, it is located at the lower section of the 1st canister portion 611, from central axis
Line J to the 2nd canister portion 612 outer peripheral surface distance it is bigger than the distance from central axis J to the outer peripheral surface of the 1st canister portion 611.By
This, for the fixing means of stator 5 and shell 6, between small diameter portion 513 and the 1st canister portion 611 and at lower core back 512
Different methods are able to use between the 2nd canister portion 612.
The manufacturing method of motor 10 in present embodiment includes following process: in the work that stator 5 is fixed on to canister portion 61
After sequence, from the top of small diameter portion 513 in upper core back 511 fixing bearing component 2.
In the present embodiment, stator 5 is being fixed in the process of canister portion 61, the inner peripheral surface quilt at lower core back 512
It is pressed on the outer peripheral surface of the 2nd canister portion 612.It also, include following process by the process that stator 5 is fixed on canister portion 61: by stator 5
After being fixed on canister portion 61, the outer peripheral surface to the 1st canister portion 611 and the either side in the inner peripheral surface of small diameter portion 513 apply bonding agent
11.That is, the 1st canister portion 611 is mutually fixed with small diameter portion 513 by bonding agent 11.Since the inner peripheral surface at lower core back 512 compares path
The inner peripheral surface in portion 513 is big, and thus the inner peripheral surface at lower core back 512 will not be with gluing on the outer peripheral surface coated in the 1st canister portion 611
Connect the contact of agent 11, it will be able to which stator 5 is fixed to shell 6.That is, can be protected in the gap of the 1st canister portion 611 and small diameter portion 513
Hold bonding agent 11.
As described above, the outer peripheral surface of the 2nd canister portion 612 has in upper end relative to the inclined inclined surface 614 central axis J,
Space 7 is formed between the inner peripheral surface of inclined surface 614, the lower surface of small diameter portion 513 and lower core back 512.This implementation
The manufacturing method of motor 10 in mode includes the process that at least part of bonding agent 11 flows into the space 7.As a result, can
Enough inhibit the outflow of the upward side of bonding agent 11, to flowing out on the inside of parts of bearings 2.
The embodiments of the present invention is illustrated above.In addition, the scope of the utility model be not limited to it is above-mentioned
Embodiment.The utility model is able to carry out various changes in the range of not departing from the purport of utility model to implement.This
Outside, illustrated item suitably can be combined arbitrarily in the range of not conflicting in the above-described embodiment.
The utility model is for example able to use in motor.
Claims (7)
1. a kind of motor, which has:
Axis is rotated centered on central axis, is extended up and down relative to central axis；
Parts of bearings is pivotally supported described can to rotate；
Rotor hub links with the axis, in downwardly open cup-shaped；
Rotor magnet is maintained at the radially inner side of the rotor hub；
Stator is located at the radially inner side of the rotor magnet, it is opposed to separate gap with the rotor magnet；And
Shell has the canister portion for keeping the stator on the outside,
The stator includes
Cricoid core-back；
Multiple teeth, they extend from the outer circumferential radial outside of the core-back；And
Coil is constituted and winding conductor wire on the tooth,
It is characterized in that,
The core-back includes
Upper core back comprising the axial upper side end of the core-back stores the parts of bearings in radially inner side；
Lower core back comprising the axial downside end of the core-back, it is opposed with cartridge radially；And
Small diameter portion is configured in the axial upside at the axial downside at the upper core back and the lower core back, therefrom
Mandrel line to the small diameter portion inner peripheral surface distance than from central axis to the upper core back and the lower core back
The distance of inner peripheral surface is small,
The small diameter portion has the recess portion being recessed to radial outside,
Bonding agent is accommodated in the gap of cartridge and the small diameter portion and in the recess portion.
2. motor according to claim 1, which is characterized in that
Cartridge includes
1st canister portion, it is opposed with the small diameter portion radially；And
2nd canister portion is located at the lower section of the 1st canister portion, from the central axis to the distance ratio of the outer peripheral surface of the 2nd canister portion
Distance from the central axis to the outer peripheral surface of the 1st canister portion is big,
2nd canister portion is opposed with the lower core back radially.
3. motor according to claim 1 or 2, which is characterized in that
The lower surface of the outer ring of the parts of bearings and the upper surface of the small diameter portion are directly opposed in the axial direction or across preload
Spring is opposed in the axial direction.
4. motor according to claim 2, which is characterized in that
The outer peripheral surface of 1st canister portion is opposed with the inner peripheral surface of the small diameter portion across bonding agent,
The outer peripheral surface of 2nd canister portion and the inner peripheral surface at the lower core back are fixed by indentation.
5. motor according to claim 4, which is characterized in that
The outer peripheral surface of 2nd canister portion has in upper end relative to the inclined inclined surface of the central axis,
It is formed with space between the inner peripheral surface of the inclined surface, the lower surface of the small diameter portion and the upper core back,
At least part of the bonding agent is configured in the space.
6. motor according to claim 2, which is characterized in that
Cartridge has the 3rd canister portion than the position of the 2nd canister portion on the lower, from the central axis to described 3rd
The distance of the outer peripheral surface in portion is bigger than the distance from the central axis to the outer peripheral surface of the 2nd canister portion,
The parts of bearings is configured in the 3rd canister portion.
7. motor according to claim 1 or 2, which is characterized in that
The outer diameter of the rotor hub is 11mm or less.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-200385 | 2017-10-16 | ||
| JP2017200385A JP6972890B2 (en) | 2017-10-16 | 2017-10-16 | Motors and motor manufacturing methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208986700U true CN208986700U (en) | 2019-06-14 |
Family
ID=66142356
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821480873.7U Withdrawn - After Issue CN208986700U (en) | 2017-10-16 | 2018-09-11 | Motor |
| CN201811054612.3A Active CN109672285B (en) | 2017-10-16 | 2018-09-11 | Motor and method for manufacturing motor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811054612.3A Active CN109672285B (en) | 2017-10-16 | 2018-09-11 | Motor and method for manufacturing motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6972890B2 (en) |
| CN (2) | CN208986700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672285A (en) * | 2017-10-16 | 2019-04-23 | 日本电产株式会社 | The manufacturing method of motor and motor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08186969A (en) * | 1994-12-28 | 1996-07-16 | Nippon Densan Corp | Brushless motor |
| JP4309642B2 (en) * | 2002-11-27 | 2009-08-05 | 日本電産株式会社 | Hydrodynamic bearing device and manufacturing method thereof |
| JP5372629B2 (en) * | 2009-07-09 | 2013-12-18 | 日本電産株式会社 | Brushless motor |
| JP6693148B2 (en) * | 2015-05-29 | 2020-05-13 | 日本電産株式会社 | motor |
| CN205792124U (en) * | 2015-05-29 | 2016-12-07 | 日本电产株式会社 | Motor |
| CN205503983U (en) * | 2016-02-05 | 2016-08-24 | 库柏电气(常州)有限公司 | Mechanical seal |
| JP6972890B2 (en) * | 2017-10-16 | 2021-11-24 | 日本電産株式会社 | Motors and motor manufacturing methods |
-
2017
- 2017-10-16 JP JP2017200385A patent/JP6972890B2/en active Active
-
2018
- 2018-09-11 CN CN201821480873.7U patent/CN208986700U/en not_active Withdrawn - After Issue
- 2018-09-11 CN CN201811054612.3A patent/CN109672285B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672285A (en) * | 2017-10-16 | 2019-04-23 | 日本电产株式会社 | The manufacturing method of motor and motor |
| CN109672285B (en) * | 2017-10-16 | 2021-04-13 | 日本电产株式会社 | Motor and method for manufacturing motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6972890B2 (en) | 2021-11-24 |
| JP2019075890A (en) | 2019-05-16 |
| CN109672285B (en) | 2021-04-13 |
| CN109672285A (en) | 2019-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106571698B (en) | Stator, motor and pump installation | |
| CN107636940B (en) | Motor | |
| US20140042866A1 (en) | Motor core component and method for increasing material utilization and slot fill ratio thereof | |
| US8552606B1 (en) | Spindle motor | |
| US20130280090A1 (en) | Fan device | |
| CN208445399U (en) | Motor | |
| US9825501B2 (en) | Rotor with end ring and electric motor | |
| CN208623413U (en) | Rotor and motor | |
| CN108352755A (en) | Motor | |
| CN208986700U (en) | Motor | |
| JP4147232B2 (en) | Positioning structure of dissimilar material parts and assembly structure of motor | |
| JP4516471B2 (en) | Armature core, armature, armature core manufacturing method, and armature manufacturing method | |
| US20160352172A1 (en) | Stator of motor, stator unit and manufacturing method thereof | |
| US20070210670A1 (en) | Motor | |
| JP5098570B2 (en) | Rotating electrical machine manufacturing method and rotating electrical machine | |
| CN109322907A (en) | The assemble method of bearing assembly, motor and bearing assembly | |
| JP2007143325A (en) | Stator structure of electric motor | |
| US20010033705A1 (en) | Motor with compound bearing for OA device | |
| JP2017135966A (en) | Stator and manufacturing method of stator | |
| CN208209692U (en) | Motor | |
| CN209104936U (en) | Motor | |
| KR102040127B1 (en) | Method for setting up motor core plate concentricity | |
| JP2017225318A (en) | motor | |
| US20130307361A1 (en) | Fan motor silicon steel sheet structure and fan motor thereof | |
| US20140042849A1 (en) | Brushless motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190614 Effective date of abandoning: 20210413 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190614 Effective date of abandoning: 20210413 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |