CN109450141A - Insulation framework, stator module and motor - Google Patents
Insulation framework, stator module and motor Download PDFInfo
- Publication number
- CN109450141A CN109450141A CN201811517480.3A CN201811517480A CN109450141A CN 109450141 A CN109450141 A CN 109450141A CN 201811517480 A CN201811517480 A CN 201811517480A CN 109450141 A CN109450141 A CN 109450141A
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- Prior art keywords
- insulation framework
- height
- wall
- axial
- interior shield
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The present invention provides a kind of insulation framework, stator module and motor.The insulation framework includes outer wall (1), interior shield tooth (2) and the skeleton gap bridge (3) for connecting outer wall (1) and interior shield tooth (2), and the axial height of interior shield tooth (2) is lower than the axial height of outer wall (1).Insulation framework according to the present invention can effectively reduce interior shield tooth axial deflection, avoid the problem that insulation framework interference rotor occurs.
Description
Technical field
The invention belongs to technical field of motors, and in particular to a kind of insulation framework, stator module and motor.
Background technique
The major part that insulation framework is supported and insulated as motor stator winding, it is desirable that structural strength deformation is sufficiently small not
Fracture and electric clearance, creepage distance meet safety standard, also require reliable with each part cooperation of stator.Existing insulation bone
Frame has following three comparison distinct issues in long-term use:
1, shield tooth height is excessive in insulation framework, and under causing winding coil extrusion load to act on, interior shield tooth footpath becomes to maximum
Shape amount is excessive or even interior super stator core internal diameter, occurs interfering rotor problem;
2, not eject insulation framework when ensuring slot insulation assembly, compare stator core slot as measures to keep clear insulation framework slot
Greatly, there are larger segment differences with iron core axial end face mating surface for skeleton, and slot insulation is big by pressure at skeleton iron core mating surface, deformation
Greatly, there are the risks that slot insulation is crushed;
3, coil windings head circle coil enters line the end of a thread and does not avoid subsequent coil, enters line the end of a thread and bears subsequent all winding coilings
Pressure, compressive deformation is serious, and there are risk of breakage.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that providing a kind of insulation framework, stator module and motor, Neng Gouyou
Effect protects tooth axial deflection in reducing, and avoids the problem that insulation framework interference rotor occurs.
To solve the above-mentioned problems, the present invention provides a kind of insulation framework, including outer wall, interior shield tooth and connection outer wall and
The skeleton of interior shield tooth is passed a bridge, and the axial height of interior shield tooth is lower than the axial height of outer wall.
Preferably, the height h of interior shield tooth meets h=b+c, and wherein b is the winding wire packet maximum height with interior shield tooth contact,
C is skeleton gap bridge axial width.
Preferably, interior shield tooth height h meets h=b+c+x, and wherein b is the winding wire packet maximum height with interior shield tooth contact,
C is skeleton gap bridge axial width, and x is the winding overhang maximum rebound height with interior shield tooth contact.
Preferably, the axial height of interior shield tooth is the 60%~70% of the axial height of outer wall.
Preferably, skeleton grooves are formed between outer wall, interior shield tooth and skeleton gap bridge, is provided with layer slot insulator in skeleton grooves.
Preferably, the two sides for the circumferential direction that skeleton is passed a bridge are formed with step groove, and layer slot insulator is arranged in step groove.
Preferably, the step height of step groove is a, and wherein a is greater than or equal to the thickness of layer slot insulator.
Preferably, there is axial spacing d between layer slot insulator and the side wall of step groove.
Preferably, (stator core is axial before and after the axial height upper deviation+layer slot insulator axial height upper deviation+coiling by d=
Difference in height)/2+ skeleton gap bridge axial width the upper deviation.
Preferably, the caulking groove for being placed into line the end of a thread is provided on the inner sidewall of outer wall.
Preferably, the depth of caulking groove is greater than or equal to the line footpath into line the end of a thread.
Preferably, the position that the lateral wall of outer wall corresponds to caulking groove is provided with convex ribs.
Preferably, enter line the end of a thread include N root and around enameled wire, the width of caulking groove is more than or equal to enameled wire line footpath
N times.
According to another aspect of the present invention, a kind of stator module, including stator core and setting are provided in stator core
On insulation framework, the insulation framework be above-mentioned insulation framework.
In accordance with a further aspect of the present invention, a kind of motor is provided, including stator core and is arranged on stator core
Insulation framework, the insulation framework are above-mentioned insulation framework.
Insulation framework provided by the invention, it is interior including outer wall, interior shield tooth and the skeleton gap bridge for connecting outer wall and interior shield tooth
The axial height for protecting tooth is lower than the axial height of outer wall.Insulation framework of the invention is by protecting the axial invalid high of tooth in reducing
Degree can make the axial height of interior shield tooth be lower than the axial height of outer wall, therefore can reduce interior shield tooth compared with the existing technology
Axial height, reduce the axial maximum deformation quantity of the interior shield tooth of insulation framework, thus in reducing in shield tooth in super stator core
Round risk avoids the problem that insulation framework interference rotor occurs, improves motor functional reliability.
Detailed description of the invention
Fig. 1 is the three-dimensional structure diagram of stator module in the prior art;
Fig. 2 is the insulation framework of stator module in the prior art and the matching chart of stator core;
Fig. 3 is the A-A of Fig. 2 to schematic cross-sectional view;
Fig. 4 is the amplification assumption diagram at the Q of Fig. 3;
Fig. 5 is the three-dimensional structure diagram of insulation framework in the prior art;
Fig. 6 is the B direction view of Fig. 5;
Fig. 7 is the coiling effect picture of insulation framework in the prior art;
Fig. 8 is the three-dimensional structure diagram of the stator module of the embodiment of the present invention;
Fig. 9 is the insulation framework of the stator module of the embodiment of the present invention and the matching chart of stator core;
Figure 10 is the A-A of Fig. 9 to schematic cross-sectional view;
Figure 11 is the amplification assumption diagram at the Q of Figure 10;
Figure 12 is the three-dimensional structure diagram of the insulation framework in the embodiment of the present invention;
Figure 13 is the B direction view of Figure 12;
Figure 14 is the coiling effect picture of the insulation framework of the embodiment of the present invention.
Appended drawing reference indicates are as follows:
1, outer wall;2, interior shield tooth;3, skeleton is passed a bridge;4, layer slot insulator;5, step groove;6, caulking groove;7, enter line the end of a thread;8, fixed
Sub- iron core.
Specific embodiment
Referring to shown in Fig. 1 to Fig. 7, existing motor stator, including stator core 8, positioned at 8 axial ends of stator core
Insulation framework, the slot insulation being lining in stator core slot, multiple windings and outgoing line components for being evenly arranged on stator core teeth portion
Deng.Wherein, insulation framework and slot insulation collectively form the insulating supporting structure between winding and stator core 8.To guarantee
Rotor keeps specific gap steady running in stator inner hole with stator, and the interior shield toothed portion requirement of insulation framework cannot
Interior super stator core internal diameter;To guarantee electrical safety, insulating supporting structure be not allow for loophole, it is damaged the defects of.
Existing insulation framework includes outer wall 1, interior shield tooth 2 and the skeleton gap bridge 3 for connecting external and internal compositions.B direction view in Fig. 6
Show the interior shield tooth 2 of skeleton and outer wall 1 with high or close with high;Outer wall 1 corresponding with multiple interior shield teeth 2 offer winding enter line and
The slot of outlet, these slots are arranged in pairs or individually according to coiling relationship, wherein in a circumferential direction, leading groove is passed a bridge close to skeleton
3, and line outlet groove is close to skeleton grooves symmetrical center line.
The outer wall 1 of insulation framework, interior shield tooth 2 and the skeleton gap bridge 3 for connecting external and internal compositions, above structure forms multiple uniformly distributed
Skeleton grooves corresponding with stator core construction, slot insulation is placed in stator core and corresponding insulation framework slot, and by
Axial direction and axial slot insulation position limiting structure limitation movement in insulation framework, are located at stator core 8 and winding to be formed
Between continuous uninterrupted insulation system layer.Slot insulation exists at iron core axial end face and insulation framework cooperation with insulation framework
Distance is the gap of a, and winding coil can force slot insulation towards the Direction distortion for eliminating gap a around line pressure, and there are slot insulation
The risk of end conquassation.
In addition, the not set winding head circle coil of insulation framework enters line the end of a thread avoiding structure, first circle coil enters line the end of a thread and does not keep away
It allows subsequent coil, enters line the end of a thread and bear subsequent all windings around line pressure, compressive deformation is serious, and there are risk of breakage.
In order to solve the above problem in the prior art, in conjunction with referring to shown in Fig. 8 to Figure 14, implementation according to the present invention
Example, insulation framework include the skeleton gap bridge 3 of outer wall 1, interior shield tooth 2 and connection outer wall 1 and interior shield tooth 2, the axial height of interior shield tooth 2
Degree is lower than the axial height of outer wall 1.
Insulation framework of the invention can make the axial height of interior shield tooth 2 by the axial invalid height of shield tooth 2 in reducing
It lower than the axial height of outer wall 1, therefore can reduce the axial height of interior shield tooth 2 compared with the existing technology, reduce insulation framework
Interior shield tooth 2 axial maximum deformation quantity, thus reduce in shield tooth 2 in super stator core inner circle risk, avoid insulating
Skeleton interferes the problem of rotor, improves motor functional reliability.
The setting height of interior shield tooth 2, which is subject to, can effectively prevent coiling to overflow, it is however generally that, along from outer wall 1 to interior
The direction of tooth 2, coiling trapezoidal distribution in wire casing are protected, namely closer to interior shield tooth 2, the height of coiling is lower, therefore, contact
The winding height of interior shield tooth 2 is minimum, and is far below the axial height of outer wall 1, for being higher by the interior shield of winding height part
For tooth 2, this part is extra, and easily causes moderate finite deformation, therefore can be partially cut-away by this, and reservation can
The height of effective backstop is formed to coiling, the height of interior shield tooth 2 is lower, and deflection is smaller, is less susceptible to cause deflection
It is excessive and interfere rotor.
Preferably, the height h of interior shield tooth 2 meets h=b+c, and wherein b is the maximum height of winding wire packet contacted with interior shield tooth 2
Degree, c is skeleton 3 axial widths of gap bridge, to reduce the invalid interior shield tooth height for generating excessive radial deformation.Insulation framework
Interior shield tooth 2 can have the deformation that axle center is radially orientated along stator due to the squeezing action of stator winding coil tensile force, should
Deflection maximum position protects the top of tooth 2 inside, is set as Δ t.If Δ t crosses super stator core internal diameter in imperial palace shield tooth and would interfere with
Rotor.According to similar triangles theory, under the premise of winding is identical, interior shield tooth stress is constant, then has Δ t ∝ h.In addition, due to fixed
Sub- winding cross-section is similar trapezoidal structure wide outside and narrow inside, and interior shield 2 effective height of tooth depends on winding inner ring limiting altitude;
Through analysis winding construction and needle mouth wire winding it is found that in the skeleton limited by stator rabbet width protect toothing size b be around
The theoretical limit height of group line packet inner ring.By geometrical relationship it is found that the theoretical boundary h=b+c of interior shield 2 effective height of tooth.
In conjunction with referring to shown in Fig. 7 and Figure 14, to be produced when interior 2 stress of shield tooth using structure in the prior art in Fig. 7
Generated deformation when in raw deformation quantity △ t0, Figure 14 for using interior 2 stress of shield tooth after the structure of the embodiment of the present invention
Measure △ t1, it can be seen from the figure that after using the structure of the embodiment of the present invention, when interior shield 2 stress of tooth generated deformation quantity
It is obviously reduced.
Preferably, interior 2 height h of shield tooth meets h=b+c+x, and wherein b is the maximum height of winding wire packet contacted with interior shield tooth 2
Degree, c are skeleton 3 axial widths of gap bridge, the winding overhang maximum rebound height that x is and interior shield tooth 2 contacts.Consider in the present embodiment
The springback capacity of winding overhang, therefore the design height of interior shield tooth 2 can be increased, it is ensured that the height of interior shield tooth 2 enough support around
All inner coils of group can more efficiently avoid interior 2 height of shield tooth too low and can not form effective blocking to winding coiling
The problem of, further increase motor reliability.
Preferably, the axial height of interior shield tooth 2 is the 60%~70% of the axial height of outer wall 1, can both guarantee interior shield
Tooth 2 has enough height to form effectively blocking limit to coiling, and can be avoided interior 2 excessive height of shield tooth, and interior shield is effectively reduced
Interior super interference rotor problem caused by tooth radial-deformation is excessive improves the reliability of motor work.
Skeleton grooves are formed between outer wall 1, interior shield tooth 2 and skeleton gap bridge 3, layer slot insulator 4 is provided in skeleton grooves.
Preferably, the two sides of the circumferential direction of skeleton gap bridge 3 are formed with step groove 5, and layer slot insulator 4 is arranged in step groove 5
It is interior.Preferably, the step height of step groove 5 is a, and wherein a is greater than or equal to the thickness of layer slot insulator 4.
By rationally increasing the insulation framework channel profiles portion step structure of protrusion on the basis of existing insulation framework slot, fixed
It is a that slot insulation end face distal end at sub- axial direction skeleton iron core end face cooperation, skeleton grooves and stator core channel profiles, which design a height,
Segment difference, it is ensured that winding wire packet extruding force all acts on skeleton at stator shaft orientation skeleton iron core end face cooperation, protector
Insulation film end effectively reduces layer slot insulator 4 because winding squeezes the risk of ulceration, improves the reliability of motor.
Preferably, there is axial spacing d between layer slot insulator 4 and the side wall of step groove 5.Preferably, d=(stator core 8
8 axial difference in height of stator core before and after the 4 axial height upper deviation of the axial height upper deviation+layer slot insulator+coiling)/2+ skeleton mistake
The 3 axial width upper deviation of bridge.
After there is fluctuation and stator winding due to the height of stator core 8, winding extruding force can force stator core 8
Height reduces, to guarantee layer slot insulator 4 in the limiting case, the skeleton for axial direction and insulation framework do not occur passed a bridge for 3 equal interfere and
Caused layer slot insulator 4 curling failure or ulceration problem, the present invention is axially, the side wall and slot insulation of step groove 5
A buffer distance d is designed between end face, to further reduced the risk that layer slot insulator 4 is crushed by winding extruding force, is promoted
Motor reliability.
Preferably, the caulking groove 6 for being placed into line the end of a thread 7 is provided on the inner sidewall of outer wall 1.Existing insulation framework winding
First circle coil enters line the end of a thread and does not avoid subsequent coil, will receive very big extruding force, is even broken there are enameled wire excessive deformation
Risk.By the way that caulking groove 6 is arranged on the inner sidewall of outer wall 1, first circle can be entered into line when introducing winding head circle enters line the end of a thread 7
The end of a thread 7 is arranged in caulking groove 6, reduces the extruding of subsequent coil by caulking groove 6, significantly reduces winding head circle and enter line the end of a thread
7 extruding forces being subject to reduce winding head circle and enter the hidden danger that line the end of a thread 7 is excessive because excessive compression deforms or even is broken, improve
The reliability of motor.
Preferably, the depth e of caulking groove 6 is greater than or equal to the line footpath into line the end of a thread 7, can make completely embedding into line the end of a thread 7
Enter in caulking groove 6, be no longer influenced by the squeezing action power of subsequent coil, is further formed to the effective protection for entering line the end of a thread 7, promotes electricity
The reliability of machine.
Preferably, the position that the lateral wall of outer wall 1 corresponds to caulking groove 6 is provided with convex ribs.By the way that convex ribs are arranged, can increase
The structural strength of outer wall 1 at caulking groove 6 is set.
Preferably, enter line the end of a thread 7 include N root and around enameled wire, the width of caulking groove 6 is more than or equal to enameled wire line footpath
N times.Wherein N is the integer greater than 1.If winding is more enameled wires and around needing to ensure that the width of caulking groove 6 is at least not less than
And around the winding wire diameter of radical times, can effectively be avoided with ensuring that all first circles of winding enter line the end of a thread 7.
According to an embodiment of the invention, stator module includes stator core 8 and the insulation bone that is arranged on stator core 8
Frame, the insulation framework are above-mentioned insulation framework.
According to an embodiment of the invention, motor includes stator core 8 and the insulation framework that is arranged on stator core 8, it should
Insulation framework is above-mentioned insulation framework.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.Above only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
Under the premise of bright technical principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as guarantor of the invention
Protect range.
Claims (15)
1. a kind of insulation framework, which is characterized in that including outer wall (1), interior shield tooth (2) and the connection outer wall (1) and described
The skeleton of interior shield tooth (2) is passed a bridge (3), and the axial height of interior shield tooth (2) is lower than the axial height of the outer wall (1).
2. insulation framework according to claim 1, which is characterized in that the height h of interior shield tooth (2) meets h=b+c,
Wherein b is the winding wire packet maximum height contacted with interior shield tooth (2), and c is skeleton gap bridge (3) axial width.
3. insulation framework according to claim 1, which is characterized in that interior shield tooth (2) the height h meets h=b+c+x,
Wherein b be with the interior winding wire packet maximum height that contact of shield tooth (2), c is that skeleton is passed a bridge (3) axial width, x for and interior shield tooth
(2) the winding overhang maximum rebound height contacted.
4. insulation framework according to claim 1, which is characterized in that the axial height of interior shield tooth (2) is described outer
The 60%~70% of the axial height of wall (1).
5. insulation framework according to any one of claim 1 to 4, which is characterized in that the outer wall (1), the interior shield
Skeleton grooves are formed between tooth (2) and skeleton gap bridge (3), layer slot insulator (4) are provided in the skeleton grooves.
6. insulation framework according to claim 5, which is characterized in that the two sides of the circumferential direction of the skeleton gap bridge (3)
It is formed with step groove (5), layer slot insulator (4) setting is in the step groove (5).
7. insulation framework according to claim 6, which is characterized in that the step height of the step groove (5) is a, wherein a
More than or equal to the thickness of layer slot insulator (4).
8. insulation framework according to claim 6, which is characterized in that the layer slot insulator (4) and the step groove (5)
There is axial spacing d between side wall.
9. insulation framework according to claim 8, which is characterized in that d=(stator core (8) the axial height upper deviation+slot
Stator core (8) axial difference in height before and after insulating layer (4) axial height upper deviation+coiling)/2+ skeleton gap bridge (3) axial width
The upper deviation.
10. insulation framework according to any one of claim 1 to 4, which is characterized in that the inner sidewall of the outer wall (1)
On be provided with caulking groove (6) for being placed into line the end of a thread (7).
11. insulation framework according to claim 10, which is characterized in that the depth of the caulking groove (6) is greater than or equal to institute
State the line footpath into line the end of a thread (7).
12. insulation framework according to claim 10, which is characterized in that the lateral wall of the outer wall (1) corresponds to described
The position of caulking groove (6) is provided with convex ribs.
13. insulation framework according to claim 11, which is characterized in that it is described enter line the end of a thread (7) include N root and around paint
Envelope curve, the width of the caulking groove (6) are more than or equal to N times of enameled wire line footpath.
14. a kind of stator module, including stator core (8) and the insulation framework being arranged on the stator core (8), feature
It is, the insulation framework is insulation framework described in any one of claims 1 to 13.
15. a kind of motor, including stator core (8) and the insulation framework being arranged on the stator core (8), feature exists
In the insulation framework is insulation framework described in any one of claims 1 to 13.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811517480.3A CN109450141A (en) | 2018-12-12 | 2018-12-12 | Insulation framework, stator module and motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811517480.3A CN109450141A (en) | 2018-12-12 | 2018-12-12 | Insulation framework, stator module and motor |
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Publication Number | Publication Date |
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CN109450141A true CN109450141A (en) | 2019-03-08 |
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ID=65556946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201811517480.3A Pending CN109450141A (en) | 2018-12-12 | 2018-12-12 | Insulation framework, stator module and motor |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111404300A (en) * | 2020-03-27 | 2020-07-10 | 珠海格力电器股份有限公司 | Assembly structure, stator module and motor |
CN113410922A (en) * | 2021-06-29 | 2021-09-17 | 比泽尔旋转压缩机(江苏)有限公司 | Motor stator convenient for routing processing of enameled wire and routing method |
-
2018
- 2018-12-12 CN CN201811517480.3A patent/CN109450141A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111404300A (en) * | 2020-03-27 | 2020-07-10 | 珠海格力电器股份有限公司 | Assembly structure, stator module and motor |
CN113410922A (en) * | 2021-06-29 | 2021-09-17 | 比泽尔旋转压缩机(江苏)有限公司 | Motor stator convenient for routing processing of enameled wire and routing method |
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