CN106329799B - A kind of motor sealing structure and motor - Google Patents
A kind of motor sealing structure and motor Download PDFInfo
- Publication number
- CN106329799B CN106329799B CN201610917667.7A CN201610917667A CN106329799B CN 106329799 B CN106329799 B CN 106329799B CN 201610917667 A CN201610917667 A CN 201610917667A CN 106329799 B CN106329799 B CN 106329799B
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- Prior art keywords
- end cap
- motor
- face
- sealing structure
- groove
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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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
Abstract
The invention discloses a kind of motor sealing structures, the insulation processings such as plastic packaging, encapsulating are carried out to it in former core end forms boss, and it will be using the boss on iron core as the seam allowance of original motor, eliminate the length of the minimum range L1 or L2 between former iron core and end cap, on the one hand the seam allowance is as O-ring seals original end cap seam allowance, reduce stator distance L3 between end cap, and then shortens motor length；On the other hand seam allowance is put into core inductance end, by reducing motor seam allowance outer diameter, indirectly improves the thickness of end cap minimum wall thickness (MINI W.) H1, improve motor component strength of reliability；In addition ensure O-ring seals its still by the way of axial seal, prevent O-ring seals to be scratched.The invention also discloses a kind of motors using above-mentioned motor sealing structure.
Description
Technical field
The present invention relates to motor protection technology field, more particularly to a kind of motor sealing structure and motor.
Background technology
The higher motor of degree of protection, it will usually select O-ring seals to be sealed, between motor case 01 and end cap 02
It is sealed using O-ring seals, sealing means are usually static seal, and stressing conditions when being installed according to O-ring seals will
It is divided into tangential and axial type, respectively as illustrated in figs. 1A and ib.
According to structure shown in FIG. 1, either tangential or axial type sealing, in order to make O-ring seals in one
A completely enclosed region, devises the fit structure of seam allowance between end cap 02 and casing 01, thus just produce a problem：
Since seam allowance is combined with length requirement, as shown in Figures 2 and 3, the stator core of the effect length of L1 and L2 is in casing 01
Rigging position, the length for extreme position L3 >=L1 (or L2) that stator is installed in casing 01.
Furthermore it is sealed according to axial type O-ring seals, due to 01 seam allowance size φ D2 ＞ φ D1 of casing so that motor exists
In the case of possessing same trench size, the hidden danger that end cap 02 will produce minimum wall thickness (MINI W.) H1 can become larger, as shown in Figure 4.
In conclusion there are following points for conventional art：Stator installation site L3 is bigger, and the installation of stator is more backwards to motor
Position at end cap, motor inner space utilization rate is relatively low, causes motor overall length under same case longer with this；Tangential simultaneously
O-ring seals can cause O-ring seals surface to be scratched by casing when motor is installed, and the leakage efficiency of O-ring seals is caused to drop
It is low；Limitation of the axial seal due to seam allowance size so that end cap will produce minimum wall thickness (MINI W.) H1, be unfavorable for the processing of end cap, reduce
The intensity of end cap.
Invention content
In view of this, the present invention provides a kind of motor sealing structure, reduce stator between end cap at a distance from, improve electricity
Machine inner space utilization rate, shortens the length of motor；Ensure that O-ring seals still by the way of axial seal, prevent O shapes close
Seal is scratched；Simultaneously by reducing motor seam allowance outer diameter, the thickness at end cap minimum wall thickness (MINI W.) can be improved indirectly, is improved
The processing difficulty and strength reliability of part.
The present invention also provides a kind of motors using above-mentioned motor sealing structure.
To achieve the above object, the present invention provides the following technical solutions：
A kind of motor sealing structure, including casing, end cap and stator；
The inner peripheral surface of the end cap is provided with stepped annular groove with the intersection of its inner face, including is located at described
First groove of inner face, and second groove adjacent with first groove；
The stator is provided with insulated end portions close to one end of the end cap, and the peripheral surface setting of the insulated end portions is useful
In the positioning convex platform coordinated with second groove；
The peripheral surface of the end face of the casing, the first groove of the end cap and the insulated end portions coordinates, and it is close to surround O shapes
The closed area of seal.
Preferably, the positioning convex platform is cylindrical boss structure, and second groove is cylinder shape groove structure.
Preferably, the end face of the ontology of the stator is concordant with the end face of the casing.
Preferably, the insulated end portions peripheral surface close to its end face first part, with the end cap inner peripheral surface close to it
The second part clearance fit of interior bottom face.
Preferably, the first part of the insulated end portions peripheral surface is in its end face gradually small conical surface, the end cap
The second part of circumferential surface is the conical surface coordinated with the first part.
Preferably, the interior bottom face clearance fit of the end face of the insulated end portions and the end cap.
Preferably, the insulated end portions are formed in the end of the stator by plastic packaging or process for filling colloid.
A kind of motor, sealing structure is provided at the end cap and casing of shell, and the sealing structure is above-mentioned motor
Sealing structure.
It can be seen from the above technical scheme that motor sealing structure provided by the invention, is set by the end in stator
The boss for setting insulation coordinates with end cap, casing, substitutes former end cap, casing seam allowance, reduce stator between end cap at a distance from, carry
High motor inner space utilization rate, shortens the length of motor；
Ensure that O-ring seals still by the way of axial seal, prevent O-ring seals to be scratched；
Meanwhile by reducing motor seam allowance outer diameter, the thickness at end cap minimum wall thickness (MINI W.) can be improved indirectly, improves zero
The processing difficulty and strength reliability of part.
The present invention also provides a kind of motor using above-mentioned motor sealing structure, advantageous effect is for example aforementioned.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 a are the structural schematic diagram of the mating surface O-ring tangential sealing of prior art end cap and casing；
Fig. 1 b are the structural schematic diagram of the mating surface O-ring axial type sealing of prior art end cap and casing；
Fig. 2 a are the seam allowance length of fit structural schematic diagram of tangential sealing in the prior art；
Fig. 2 b are the seam allowance length of fit structural schematic diagram of axial type sealing in the prior art；
Fig. 3 is installation site structural schematic diagram of the stator in casing in the prior art；
Fig. 4 is that there are the structural schematic diagrams of minimum wall thickness (MINI W.) situation for axial type sealing in the prior art；
Fig. 5 is the close-up schematic view of sealing structure provided in an embodiment of the present invention；
Fig. 6 is the overall structure diagram of motor provided in an embodiment of the present invention.
Wherein, Fig. 1-Fig. 4 in the prior art, 01 is casing, and 02 is end cap, and 03 is stator；
In Fig. 5 and Fig. 6's in the present solution, 11 be casing, 12 be (preceding) end cap, and 13 be stator, and 131 be insulated end portions, 132
For positioning convex platform, 14 be O-ring seals, and 15 be electromagnetic wire, and 16 be skeleton, and 17 be bearing, and 18 be permanent magnet, and 19 be rotor, 20
It is brake for rear end cap, 21,22 be back cover, and 23 be position-detection sensor, and 24 be bearing.
Specific implementation mode
The invention discloses a kind of motor sealing structure and motors, prevent O-ring seals from being scratched when motor is installed,
The mounting distance between stator and end cap is reduced, motor overall length is reduced, improves the thickness of end cap minimum wall thickness (MINI W.), reduces motor component
Difficulty of processing and improve part machining accuracy.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Motor sealing structure provided in an embodiment of the present invention, core improvement be, including casing 11, end cap 12 and fixed
Son 13, structure is referred to shown in Fig. 5；
Wherein, the inner peripheral surface of end cap 12 is provided with stepped annular groove with the intersection of its inner face, including is located at
First groove of inner face, and second groove adjacent with the first groove, the second groove therein is as inner stopper；It is appreciated that
, the radial dimension bigger of the second groove, i.e., than the first groove depth；
Stator 13 is provided with insulated end portions 131 by one end of proximal cover 12, and the peripheral surface setting of the insulated end portions 131 is useful
In the positioning convex platform 132 coordinated with above-mentioned second groove, which is used as male half coupling；
The peripheral surface of the end face of casing 11, the first groove of end cap 12 and insulated end portions 131 coordinates, and surrounds O-ring seals
14 closed area, rectangular cross-section, axial dimension are more than the diameter of O-ring seals 14.
It can be seen from the above technical scheme that motor sealing structure provided in an embodiment of the present invention, by stator 13
End set insulated end portions 131, end cap that 132 appearance and size of positioning convex platform, tolerance can coordinate according to actual needs and
Housing design, insulation insulated end portions 131 coordinate with end cap 12, casing 11, substitute former end cap, casing seam allowance so that former end cap stops
Mouthful size L1 or L2 are 0, eliminate the former minimum spacing L1 or L2 of stator core and end cap so that between iron core and end cap away from
From becoming L3, wherein L3 >=0, from improving motor inner space utilization rate；Due to installation position of the stator core in complete machine
The length compared to the forward L1 or L2 of former scheme is set, so the overall length of motor can also shorten the length of L1 or L2 accordingly；
Meanwhile the mode of former seam allowance cooperation, due to seam allowance size φ D2 ＞ φ D1, and uses stator insulation end to be used as and stop
Mouthful so that φ D2 sizes became smaller more originally, under same trench size, improved the thickness of end cap minimum wall thickness (MINI W.) H1；
In addition, O-ring seals 14 compress deformation between the counterface of 12 the two of casing 11 and end cap, ensure it still
By the way of axial seal, O-ring seals is prevented to be scratched.
This programme provide specific embodiment in, positioning convex platform 132 be cylindrical boss structure, including side periphery and
End plane, the second groove are cylinder shape groove structure, and the cooperation that face is mutually perpendicular to by two effectively ensure that radial direction and axis
To positioning.Certainly, those skilled in the art can also select other shapes of seam allowance fit system, and details are not described herein.
Preferably, the end face of the ontology (i.e. its iron core) of stator 13 is concordant with the end face of casing 11 so that 13 iron of stator
The distance between the heart and end cap 12 become 0, from maximization motor inner space utilization rate.With reference to figure 5, iron core and end cap spacing
L3=0 is equivalent to motor overall length and shortens L3 length.It is understood that the end face of 13 ontology of said stator, which refers to it, leans on proximal end
That one end of lid 12, the end face of casing 11 refer to that one end that it coordinates with end cap 12.
In order to advanced optimize above-mentioned technical solution, 131 peripheral surface of insulated end portions close to its end face first part, with
Second part clearance fit of 12 inner peripheral surface of end cap close to its interior bottom face (bottom end face of 12 inside center of end cap).Such one
Come, just reduce this two-part requirement on machining accuracy, avoids the off size suitable assembly problem brought.
In the specific embodiment that this programme provides, the first part of 131 peripheral surface of insulated end portions be close to its end face gradually
The second part of the small conical surface, 12 inner peripheral surface of end cap is the conical surface coordinated with first part.Its structure is referred to shown in Fig. 5,
Cone match mode so can play guiding role in assembly.
Preferably, the interior bottom face clearance fit of the end face of insulated end portions 131 and end cap 12.So, it just reduces
The requirement on machining accuracy of this both ends of the surface height avoids the off size suitable assembly problem brought
In the specific embodiment that this programme provides, insulated end portions 131 are formed in stator by techniques such as plastic packaging or encapsulatings
13 end, this patent are not limited to any type technology mode.Electric machine stator iron is carried out absolutely using techniques such as plastic packaging, encapsulatings
Edge processing, processes the boss of respective outer diameters and height in original surface of stator core, becomes former end cap seam allowance, with stator iron
The heart is integrally formed.
The embodiment of the present invention additionally provides a kind of motor, and sealing structure, core are provided at the end cap and casing of shell
Heart improvement is that sealing structure is above-mentioned motor sealing structure.
This programme is described further with reference to practical set sequence：
1) O-ring seals are placed into core inductance end；2) iron core and end cap are installed；3) casing is installed to iron core
With on end cap；Or in process 1) on the basis of first iron core is installed on casing, then end cap is installed on casing.Iron core
Insulated end portions can be designed as boss positioning with end cap, can prevent installation site of the iron core in end cap from changing in this way,
With this assembly technology, it is ensured that the stress of O-ring seals is still axial type, effectively prevents O-ring seals in Fig. 1 a from pacifying
The case where surface is scratched during dress improves the sealing reliability of motor entirety.
In conclusion motor sealing structure provided in an embodiment of the present invention, plastic packaging, encapsulating are carried out in former core end to it
Etc. insulation processings form boss, and by using the boss on iron core as the seam allowance of original motor, eliminate between former iron core and end cap
Minimum range L1 or L2 length, on the one hand the seam allowance as O-ring seals original end cap seam allowance, reduce between stator and end cap
Distance L3, and then shorten motor length；On the other hand seam allowance is put into core inductance end, by reducing outside motor seam allowance
Diameter size indirectly improves the thickness of end cap minimum wall thickness (MINI W.) H1, improves motor component strength of reliability；In addition ensure O shapes
Sealing ring its still by the way of axial seal, prevent O-ring seals to be scratched.The embodiment of the present invention additionally provides one kind and answers
With the motor of above-mentioned motor sealing structure.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (7)
1. a kind of motor sealing structure, which is characterized in that including casing (11), end cap (12) and stator (13)；
The inner peripheral surface of the end cap (12) is provided with stepped annular groove, the annular groove with the intersection of its inner face
Include the first groove positioned at the inner face, and second groove adjacent with first groove；
The stator (13) is provided with insulated end portions (131) close to one end of the end cap (12), the insulated end portions (131)
Peripheral surface is provided with the positioning convex platform (132) for coordinating with second groove；
The peripheral surface of the end face of the casing (11), the first groove of the end cap (12) and the insulated end portions (131) coordinates,
Surround the closed area of O-ring seals (14).
2. motor sealing structure according to claim 1, which is characterized in that the positioning convex platform (132) is circular cylindrical projection
Platform structure, second groove are cylinder shape groove structure.
3. motor sealing structure according to claim 1, which is characterized in that the end face of the ontology of the stator (13) and institute
The end face for stating casing (11) is concordant.
4. motor sealing structure according to claim 1, which is characterized in that insulated end portions (131) peripheral surface is close
The first part of its end face, with the end cap (12) inner peripheral surface close to the second part clearance fit of its interior bottom face；
The first part of insulated end portions (131) peripheral surface is close to its end face gradually small conical surface, the end cap (12)
The second part of inner peripheral surface is the conical surface coordinated with the first part.
5. motor sealing structure according to claim 1, which is characterized in that the end face of the insulated end portions (131) and institute
State the interior bottom face clearance fit of end cap (12).
6. according to the motor sealing structure described in claim 1-5 any one, which is characterized in that the insulated end portions (131)
The end of the stator (13) is formed in by plastic packaging or process for filling colloid.
7. a kind of motor, it is provided with mutually matched sealing structure at the end cap and casing of casing, which is characterized in that described close
Seal structure is motor sealing structure as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610917667.7A CN106329799B (en) | 2016-10-21 | 2016-10-21 | A kind of motor sealing structure and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610917667.7A CN106329799B (en) | 2016-10-21 | 2016-10-21 | A kind of motor sealing structure and motor |
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| Publication Number | Publication Date |
|---|---|
| CN106329799A CN106329799A (en) | 2017-01-11 |
| CN106329799B true CN106329799B (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610917667.7A Active CN106329799B (en) | 2016-10-21 | 2016-10-21 | A kind of motor sealing structure and motor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834745B (en) * | 2017-12-01 | 2024-02-09 | 丹阳荣嘉精密机械有限公司 | Motor housing with good sealing performance |
| CN108418334B (en) * | 2018-05-02 | 2024-04-30 | 隆鑫通用动力股份有限公司 | Generator seal housing and generator |
| CN109888938A (en) * | 2019-02-01 | 2019-06-14 | 东菱技术有限公司 | A kind of servo motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000050574A (en) * | 1998-07-24 | 2000-02-18 | Matsushita Electric Ind Co Ltd | Fully sealed external fan induction motor |
| CN201226480Y (en) * | 2008-07-04 | 2009-04-22 | 中山大洋电机股份有限公司 | Localization structure for assembling motor end cap |
| CN203377709U (en) * | 2013-07-15 | 2014-01-01 | 淮安威灵电机制造有限公司 | A spigot structure of a motor end cap and a motor |
| CN104539080B (en) * | 2014-12-31 | 2018-01-26 | 广东威灵电机制造有限公司 | The waterproof sealing structure and plastic packaging motor of plastic packaging stator and bearing (ball) cover |
| CN206149064U (en) * | 2016-10-21 | 2017-05-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Sealing structure of motor and motor |
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| CN106329799A (en) | 2017-01-11 |
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Effective date of registration: 20181123 Address after: 519000 Qianshan Golden Chicken West Road in Zhuhai, Guangdong Co-patentee after: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. Patentee after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Address before: 519070 Nine Science and Technology Building, 789 Jinji Road, Qianshan, Zhuhai City, Guangdong Province Patentee before: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. |