CN204906081U - Plastic envelope motor prevent bearings electrolysis structure - Google Patents
Plastic envelope motor prevent bearings electrolysis structure Download PDFInfo
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- CN204906081U CN204906081U CN201520713141.8U CN201520713141U CN204906081U CN 204906081 U CN204906081 U CN 204906081U CN 201520713141 U CN201520713141 U CN 201520713141U CN 204906081 U CN204906081 U CN 204906081U
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- outer end
- end cap
- plastic packaging
- end cover
- conductive shell
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Abstract
The utility model is suitable for a motor field provides plastic envelope motor prevent bearings electrolysis structure, it includes plastic envelope stator assembly, locate the plastic envelope stator assembly outside outer end cover, locate the outer bearing in the outer end cover and locate plastic envelope stator assembly with outer end cover between electrically conductive shell, plastic envelope stator assembly has the iron core of exposing portion, the shell that electrically conducts to be connected in exposing iron core portion outside and between the end cover. The utility model discloses an electrically conductive shell electrically conducts connects outer end cover and stator core, and its simple to operate, electrically conductive reliability are high, and its very big degree reduced the axial extension length of outer end cover to simplify the structure of outer end cover, reduced the manufacturing degree of difficulty of outer end cover mould utensil and the later stage machine tooling area of outer end cover, simultaneously, because having and expose iron core portion, the outer end drowning carries out direct cooperation, so its design that makes outer end cover can not exposed the influence of iron core portion size, and then has further reduced the manufacturing and designing degree of difficulty of outer end cover, has effectively reduced the manufacturing cost of outer end cover.
Description
Technical field
The utility model belongs to machine field, particularly relates to the anti-bearing electric corrosion structure of plastic packaging motor.
Background technology
Motor bearings inside is generally all provided with lubricating grease, and this lubricating grease can produce very thin oil film (thickness is about 0.005mm) in bearing between coil support, outer coil support, rolling element.Plastic package brushless direct current motor is in running, voltage difference can be there is between the interior coil support of bearing and outer coil support, when this voltage difference enough greatly also can puncture the oil film of Bearing inner, the direct conduction between bearing inner race support, outer coil support, rolling element will be caused to contact, and produce shock phenomenon on the surface of conductive contact, thus damage can be caused to the raceway groove of bearing, namely create bearing galvanic corrosion phenomenon, and then cause the early failure of bearing, have a strong impact on the useful life of bearing.
In order to solve the bearing galvanic corrosion problems existed in plastic-sealing brushless DC motor, prior art proposes following technical scheme: adopt conductive plate inner end cap to be connected with stator core conducting; Make the end of stator core end cap toward the outside have exposed parts simultaneously, and directly contacted with outer end cap by this exposed parts and coordinate to reach the object making outer end cap and stator core conducting.But the outer end cap in this technical scheme also exists complex structure, manufactures and designs the weak point that difficulty is large, manufacturing cost is high, installation difficulty is large, and imbody is as follows:
1) coordinate with the contact of stator core exposed parts to realize outer end cap, outer end cap axially need extend to the position of complete covering stator iron core exposed parts from the end face of plastic packaging stator assembly along plastic packaging stator assembly, like this, the axial extension of outer end cap can be made very large.And due to outer end cap be all adopt die casting aluminium mould molding mostly, therefore, the manufacture difficulty of the axial extension of outer end cap too conference enlarged outer end box cover die; And outer end cap adopts cast-aluminum die shaping also need to carry out machine work, the machine work area of the axial extension of outer end cap too conference enlarged outer end lid, thus the manufacturing cost of outer end cap can be made very high.
2) the installation fit dimension of outer end cap and stator core exposed parts requires high, the good contact of outer end cap and stator core should be ensured, ensureing that outer end cap assembles with the installation of stator core exposed parts again to operate than being easier to, also will ensure that outer end cap is detachable simultaneously.
3) stator core exposed parts is coordinated by plastic package die to realize, be easy in plastic packaging process produce and leak material phenomenon, thus it is coated by capsulation material to cause part to preset stator core exposed parts, like this, the bad design of the fit dimension of outer end cap can be made, and along with the change of outer end cap mould, size produces drift, can the design difficulty of further enlarged outer end lid and mould thereof.
Directly contact the means coordinated to realize outer end cap and stator core conducting with stator core exposed parts for above-mentioned employing outer end cap, prior art also has another replacement means: to be connected with stator core by outer end cap conducting by a strips of conductive body or sheets of conductive body.Also there is many weak points in a particular application in these replacement means, imbody is as follows: strips of conductive body or sheets of conductive body installation process be complicated, it is not high to install solid and reliable property, and the contact area of strips of conductive body or sheets of conductive body and stator core, outer end cap is little, easily occur the phenomenon of loose contact, it conducts electricity poor reliability.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provide the anti-bearing electric corrosion structure of plastic packaging motor, which solve existing plastic packaging motor and adopt outer end cap directly to contact in cooperation means with stator core exposed parts to cause outer end cap complex structure, manufacture and design difficulty is large, manufacturing cost is high, installation difficulty is large technical problem and solve existing plastic packaging motor and adopt in strips of conductive body or sheets of conductive body conducting outer end cap and stator core means and conduct electricity the technical problem of poor reliability.
For achieving the above object, the technical solution adopted in the utility model is: the anti-bearing electric corrosion structure of plastic packaging motor, comprise plastic packaging stator assembly, be located at outer end cap outside described plastic packaging stator assembly, be located at the outer bearing in described outer end cap and be located at the conductive shell between described plastic packaging stator assembly and described outer end cap, described plastic packaging stator assembly has and exposes iron core portion, exposes between iron core portion and described outer end cap described in described conductive shell conduction is connected to.
Preferably, iron core portion is exposed with described respectively in the two ends of described conductive shell, described outer end cap is socketed and coordinates.
Preferably, one end of described conductive shell be sheathed on by interference fit described in expose outside iron core portion.
Preferably, the other end of described conductive shell to be socketed with described outer end cap by interference fit and to coordinate; Or the other end of described conductive shell to be socketed with described outer end cap by gap fiting mode and to coordinate, and described outer end cap is fastenedly connected described plastic packaging stator assembly by securing member.
Preferably, described outer end cap has the ring-type screens flange extended towards described conductive shell, and the end sleeve near described outer end cap of described conductive shell is located at outside described ring-type screens flange.
Preferably, described plastic packaging stator assembly comprises stator module and plastic packaging and takes shape in plastic shell outside described stator module, described stator module comprises stator core, and described stator core has that convex to be exposed to described plastic shell outer and expose iron core portion near described in described conductive shell.
Preferably, described plastic packaging stator assembly also comprises the inner end cap that is packaged in described plastic shell and is packaged in described plastic shell and also conducts electricity the conductive member be connected between described inner end cap and described stator core.
Preferably, described conductive member comprises one end and described inner end cap and conducts electricity the first electric conductor of being connected and bend and be located at the described first electric conductor other end and extend along described plastic packaging stator assembly axis the second electric conductor conducting electricity and connect described stator core lateral surface.
Preferably, described conductive shell by metal plate coils around and weld and formed.
Preferably, described outer end cap is by material during tensile or die cast.
The anti-bearing electric corrosion structure of the plastic packaging motor that the utility model provides, by setting up conductive shell between plastic packaging stator assembly and outer end cap, and expose iron core portion and outer end cap by the connection of conductive shell conduction, like this, effectively achieve electrically conducting of outer end cap and stator core, prevent outer bearing generation galvanic corrosion phenomenon.The utility model, carry out conduction by conductive shell and connect outer end cap and stator core, it is easy for installation, conduction reliability is high, and it reduces the axial extension of outer end cap dramatically, thus simplify the structure of outer end cap, reduce the manufacture difficulty of outer end cap mould and the later stage machine work area of outer end cap; Meanwhile, due to outer end cap not with expose iron core portion and directly coordinate, therefore, make the design of outer end cap can not by the impact exposing iron core dimensions, so further reduce outer end cap manufacture and design difficulty, finally effectively reduce the manufacturing cost of outer end cap.
Accompanying drawing explanation
Fig. 1 is the generalized section of the plastic packaging motor that the utility model embodiment provides;
Fig. 2 is the decomposing schematic representation of the plastic packaging motor that the utility model embodiment provides;
Fig. 3 is the decomposing schematic representation of the plastic packaging stator assembly that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
It should be noted that, when an element is described on " being fixed on " or " being arranged at " another element, it can directly on another element or may there is centering elements simultaneously.Be described to be " connection " another element when an element, it can be directly connect another element or may there is centering elements simultaneously.
Also it should be noted that, the orientation term such as left and right, upper and lower, the top in following examples, end, is only relative concept or be reference with the normal operating condition of product each other, and should not be regarded as have restrictive.
As shown in Figures 1 to 3, the anti-bearing electric corrosion structure of the plastic packaging motor that the utility model embodiment provides, the conductive shell 4 comprising plastic packaging stator assembly 1, be located at outer end cap 2 outside plastic packaging stator assembly 1, be located at the outer bearing 3 in outer end cap 2 and be located between plastic packaging stator assembly 1 and outer end cap 2, plastic packaging stator assembly 1 has and exposes iron core portion 101, and conductive shell 4 conduction is connected to and exposes between iron core portion 101 and outer end cap 2.The anti-bearing electric corrosion structure of the plastic packaging motor that the utility model embodiment provides, by setting up conductive shell 4 between plastic packaging stator assembly 1 and outer end cap 2, and conduct electricity connection by conductive shell 4 and expose iron core portion 101 and outer end cap 2, like this, effectively achieve electrically conducting of outer end cap 2 and stator core 111, prevent outer bearing 3 that galvanic corrosion phenomenon occurs.The utility model, carry out conduction by conductive shell 4 and connect outer end cap 2 and stator core 111, it is easy for installation, conduction reliability is high, and the setting of conductive shell 4 reduces the axial extension of outer end cap 2 dramatically, thus simplify the structure of outer end cap 2, reduce the manufacture difficulty of outer end cap 2 mould and the later stage machine work area of outer end cap 2; Simultaneously, due to outer end cap 2 not with expose iron core portion 101 and directly coordinate, therefore, make the design of outer end cap 2 can not by the impact exposing iron core portion 101 size, and then further reduce outer end cap 2 manufacture and design difficulty, finally effectively reduce the manufacturing cost of outer end cap 2.
Preferably, shown in seeing figures.1.and.2 in the lump, conductive shell 4 is the tube-in-tube structure of hollow, its two ends respectively with expose iron core portion 101, outer end cap 2 is socketed and coordinates, like this, both can realize conductive shell 4 and expose iron core portion 101, the contact of outer end cap 2 conducts electricity and is connected, and can realize again conductive shell 4 and the mechanical connection exposing iron core portion 101, outer end cap 2; Simultaneously, due to conductive shell 4 with expose iron core portion 101, the contact of outer end cap 2 be all that circumferential hoop solderless wrapped connection is tactile, therefore its contact area is larger, even if the area exposing iron core portion 101 exposed conductive part is very little, also can ensure conductive shell 4 and expose iron core portion 101, the good conductive of outer end cap 2 contacts, and fully ensure that conductive shell 4 and the reliability exposing iron core portion 101, outer end cap 2 conductive contact.
Preferably, one end of conductive shell 4 is sheathed on by interference fit exposes outside iron core portion 101, like this, has both been beneficial to and has stopped conductive shell 4 and expose the bad phenomenon of iron core portion 101 conductive contact, is beneficial to again the solid and reliable property improving conductive shell 4 and install; And when specifically installing, only conductive shell 4 press-in need to be set in by external force and to expose in iron core portion 101, its mounting process is very simple.
Preferably, the other end of conductive shell 4 to be socketed with outer end cap 2 by interference fit and to coordinate, and like this, has both been beneficial to and has ensured conductive shell 4 and the conductive contact reliability of outer end cap 2, and be beneficial to again the solid and reliable property ensureing that outer end cap 2 is installed; During concrete installation, outer end cap 2 is crimped on conductive shell 4 by external force, and its mounting process is simple.Of course, in embody rule, the other end of conductive shell 4 to be also socketed with outer end cap 2 by gap fiting mode and to coordinate, and then by securing members such as screws, outer end cap 2 is fastenedly connected plastic packaging stator assembly 1, like this, also can realize the installation of outer end cap 2 and be connected with the conduction of conductive shell 4.
Preferably, shown in seeing figures.1.and.2 in the lump, outer end cap 2 has the ring-type screens flange 21 extended towards conductive shell 4, and the end sleeve near outer end cap 2 of conductive shell 4 is located at outside ring-type screens flange 21.The setting of ring-type screens flange 21, is beneficial to and realizes outer end cap 2 and coordinate with the socket of conductive shell 4, and fully ensure that the contact area of outer end cap 2 and conductive shell 4.
Preferably, in the lump with reference to shown in Fig. 1 and Fig. 3, plastic packaging stator assembly 1 comprises stator module 11 and plastic packaging and takes shape in plastic shell 12 outside stator module 11, stator module 11 comprises stator core 111, be located at the stator winding 112 on stator core 111 and the insulating element 113 be located between stator core 111 and stator winding 112 or insulating barrier, and it is outer and expose iron core portion 101 near conductive shell 4 that stator core 111 has the convex plastic shell 12 that is exposed to.
Preferably, in the lump with reference to shown in Fig. 1 and Fig. 3, plastic packaging stator assembly 1 also comprises the inner end cap 13 that is packaged in plastic shell 12 and is packaged in plastic shell 12 and also conducts electricity the conductive member 14 be connected between inner end cap 13 and stator core 111, is provided with inner bearing 6 in inner end cap 13.The setting of conductive member 14, effectively can realize electrically conducting of inner end cap 13 and stator core 111, thus prevent inner bearing 6 that galvanic corrosion phenomenon occurs.
Particularly, outer end cap 2 and inner end cap 13 lay respectively at the both sides of stator module 11, and plastic packaging motor specifically also comprises the rotor assembly 5 wearing and be installed on inside plastic packaging stator assembly 1, and rotor assembly 5 comprises rotating shaft and is installed on the rotor body in rotating shaft.Outer end cap 2 specifically has the outer bearing chamber for the accommodating location of outer bearing 3, inner end cap 13 specifically has the inner bearing chamber for the accommodating location of inner bearing 6, outer bearing 3 is installed in the outer bearing chamber of outer end cap 2, inner bearing 6 is installed in the inner bearing chamber of inner end cap 13, rotor body, outer bearing 3 and inner bearing 6 are all installed in rotating shaft, and rotor body wears the inner side being installed on stator module 11, outer bearing 3 and inner bearing 6 lay respectively at the both sides of rotor body.Outer bearing 3 have coordinate with rotating shaft first in the first outer coil support of coordinating with outer end cap 2 of coil support and the first rolling element of being located in first between coil support and the first outer coil support, inner bearing 6 have coordinate with rotating shaft second in the second outer coil support of coordinating with inner end cap 13 of coil support and the second rolling element of being located in second between coil support and the second outer coil support.Because outer end cap 2 and inner end cap 13 carry out conduction connecting stator iron core 111 respectively by conductive shell 4, conductive member 14, and outer end cap 2 contacts with the first outer ring stent conduction of outer bearing 3, inner end cap 13 contacts with the second outer ring stent conduction of inner bearing 6, outer bearing 3 first in coil support and inner bearing 6 second in coil support all with rotating shaft conductive contact, therefore, the conducting of coil support in coil support and second in its conducting, first effectively achieving the first outer coil support and the second outer coil support, thus effectively prevent the generation of outer bearing 3 and inner bearing 6 galvanic corrosion phenomenon.
Preferably, in the lump with reference to shown in Fig. 1 and Fig. 3, conductive member 14 comprises one end and inner end cap 13 and conduct electricity the first electric conductor 141 of being connected and conduct electricity the second electric conductor 142 of connecting stator iron core 111 lateral surface with bending to be located at first electric conductor 141 other end and to extend along plastic packaging stator assembly 1 axis.Conductive member 14 specifically can be metallic conduction sheet, and its structure is simple, be easy to manufacture.
Preferably, conductive shell 4 is reeled by conductive metal sheet and is welded and formed, its course of processing is very simple, convenient, and conductive shell 4 reeled by conductive metal sheet and do not need after welding fabrication to carry out again machine work can directly with expose iron core portion 101 and be set with and coordinate, its manufacturing cost is very low.
Preferably, outer end cap 2 is stretched or die cast by conductive metallic material, and like this, the mould that only need design and manufacture outer end cap 2 can produce outer end cap 2; And be arranged so that the axial extension of outer end cap 2 reduces due to conductive shell 4, therefore it makes the mould design and manufacture difficulty of outer end cap 2 obtain to reduce dramatically, thus reduces the manufacturing cost of outer end cap 2 dramatically.
Preferably, outer end cap 2 is cast-aluminum end cover, and conductive shell 4 is iron-clad, because aluminium is higher than iron material cost, therefore, herein, carry out conduction connection by conductive shell 4 and expose iron core portion 101 and outer end cap 2, can be beneficial to and reduce a part of aluminium consumption amount, thus be beneficial to the cost reducing plastic packaging motor further.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace or improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. the anti-bearing electric corrosion structure of plastic packaging motor, the outer bearing comprising plastic packaging stator assembly, be located at the outer end cap outside described plastic packaging stator assembly and be located in described outer end cap, it is characterized in that: also comprise the conductive shell be located between described plastic packaging stator assembly and described outer end cap, described plastic packaging stator assembly has and exposes iron core portion, exposes between iron core portion and described outer end cap described in described conductive shell conduction is connected to.
2. the anti-bearing electric corrosion structure of plastic packaging motor as claimed in claim 1, is characterized in that: iron core portion is exposed with described respectively in the two ends of described conductive shell, described outer end cap is socketed and coordinates.
3. the anti-bearing electric corrosion structure of plastic packaging motor as claimed in claim 2, is characterized in that: expose outside iron core portion described in one end of described conductive shell is sheathed on by interference fit.
4. the anti-bearing electric corrosion structure of plastic packaging motor as claimed in claim 3, is characterized in that: the other end of described conductive shell to be socketed with described outer end cap by interference fit and to coordinate; Or the other end of described conductive shell to be socketed with described outer end cap by gap fiting mode and to coordinate, and described outer end cap is fastenedly connected described plastic packaging stator assembly by securing member.
5. the anti-bearing electric corrosion structure of plastic packaging motor as claimed in claim 4, it is characterized in that: described outer end cap has the ring-type screens flange extended towards described conductive shell, the end sleeve near described outer end cap of described conductive shell is located at outside described ring-type screens flange.
6. the anti-bearing electric corrosion structure of the plastic packaging motor as described in any one of claim 1 to 5, it is characterized in that: described plastic packaging stator assembly comprises stator module and plastic packaging and takes shape in plastic shell outside described stator module, described stator module comprises stator core, and described stator core has that convex to be exposed to described plastic shell outer and expose iron core portion near described in described conductive shell.
7. the anti-bearing electric corrosion structure of plastic packaging motor as claimed in claim 6, is characterized in that: described plastic packaging stator assembly also comprises the inner end cap that is packaged in described plastic shell and is packaged in described plastic shell and also conducts electricity the conductive member be connected between described inner end cap and described stator core.
8. the anti-bearing electric corrosion structure of plastic packaging motor as claimed in claim 7, is characterized in that: described conductive member comprises one end and described inner end cap and conduct electricity the first electric conductor be connected and be located at the described first electric conductor other end with bending and extend along described plastic packaging stator assembly axis the second electric conductor conducting electricity and connect described stator core lateral surface.
9. the anti-bearing electric corrosion structure of the plastic packaging motor as described in any one of claim 1 to 5, is characterized in that: described conductive shell by metal plate coils around and weld and formed.
10. the anti-bearing electric corrosion structure of the plastic packaging motor as described in any one of claim 1 to 5, is characterized in that: described outer end cap is by material during tensile or die cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520713141.8U CN204906081U (en) | 2015-09-15 | 2015-09-15 | Plastic envelope motor prevent bearings electrolysis structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520713141.8U CN204906081U (en) | 2015-09-15 | 2015-09-15 | Plastic envelope motor prevent bearings electrolysis structure |
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| Publication Number | Publication Date |
|---|---|
| CN204906081U true CN204906081U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520713141.8U Active CN204906081U (en) | 2015-09-15 | 2015-09-15 | Plastic envelope motor prevent bearings electrolysis structure |
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| CN (1) | CN204906081U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482859A (en) * | 2017-08-30 | 2017-12-15 | 广东威灵电机制造有限公司 | Plastic packaging motor |
| WO2021017192A1 (en) * | 2019-07-26 | 2021-02-04 | 广东威灵电机制造有限公司 | Brushless motor and electrical equipment |
-
2015
- 2015-09-15 CN CN201520713141.8U patent/CN204906081U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482859A (en) * | 2017-08-30 | 2017-12-15 | 广东威灵电机制造有限公司 | Plastic packaging motor |
| WO2021017192A1 (en) * | 2019-07-26 | 2021-02-04 | 广东威灵电机制造有限公司 | Brushless motor and electrical equipment |
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