CN202488283U - Direct current motor with electrolytic corrosion prevention structure - Google Patents
Direct current motor with electrolytic corrosion prevention structure Download PDFInfo
- Publication number
- CN202488283U CN202488283U CN2012200665995U CN201220066599U CN202488283U CN 202488283 U CN202488283 U CN 202488283U CN 2012200665995 U CN2012200665995 U CN 2012200665995U CN 201220066599 U CN201220066599 U CN 201220066599U CN 202488283 U CN202488283 U CN 202488283U
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- side end
- end cap
- direct current
- end cover
- fixed mount
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Abstract
The utility model discloses a direct current motor with an electrolytic corrosion prevention structure. The direct current motor comprises a stator assembly and a rotating axis, wherein the stator assembly is arranged between a first side end cover and a second side end cover, the rotating axis penetrates out of the second side end cover, and an insulating fixed mount is arranged on the outer edge of the stator assembly, provided with a conducting plate electrically conducting the two side end covers, arranged on the stator assembly by a guide post arranged on the insulating fixed mount and provided with a fastener or a trough for installing the conducting plate. A connecting hole is formed on the first side end cover, and the conducting plate is provided with a through hole or a flanging hole which is electrically connected with the connecting hole. The conducting plate is provided with a bending part which is electrically connected with the second side end cover, thus enabling the first side end cover and the second side end cover to form an equipotential body, reducing voltage difference between a stator and a shaft, and effectively preventing a bearing from suffering from electrolytic corrosion. The direct current motor with the electrolytic corrosion prevention structure has the characteristics of being simple in design, reasonable in structure, low in manufacturing cost, long in service life and convenient for large-batch production.
Description
Technical field
The utility model relates to a kind of direct current machine, particularly a kind of three-phase brushless dc motor with anti-galvanic corrosion structure.
Background technology
Because the stator of plastic packaging brshless DC motor is not to equate with the gas length between the rotor along whole circumference everywhere; Each parallel circuits of motor is symmetry not exclusively; Cause the magnetic resistance of each magnetic circuit unequal; The magnetic flux that unequal each parallel circuits of magnetic resistance is passed through also is unequal, so non-vanishing with the total magnetic flux of motor rotor intersecting chain.So when motor rotates, at internal rotor, the motor crown cap; Stator core all induces voltage, but because the induced voltage that rotor and crown cap produce is unequal, forms a pressure reduction; Along with motor long-play under stable rotating speed, this pressure reduction can increase, because the rotor inner ring links to each other with bearing inner race; The motor crown cap links to each other with bearing outer ring, so this pressure reduction directly embodies at bearing enclose.Bearing enclose directly is to lean on lubricant grease when bearing element, to form oily mould as insulation; But bearing enclose pressure reduction surpasses certain numerical value; Just the grease oil mould with bearing punctures; Produce electric current thereupon discharging, will make bearing inner surface and ball that local corrode phenomenon takes place like this, the bearing galvanic corrosion of our said plastic packaging DC Brushless Motor that Here it is.
The anti-galvanic corrosion method of motor industry employing at present has: 1) make the inner ring of bearing and outer ring be in conducting state, its concrete grammar is to let the lubricant grease of bearing have conductivity.But conductive lubricant is along with the prolongation of service time, and its conductivity can worsen, and problem such as the reliability shortcoming of sliding in addition.In addition, though it is also conceivable that to be employed in brush be set on the armature spindle, with brush with connecting conducting inside and outside the bearing, but also there is the wear of brush powder in this method and problems such as space need be set.2) reduce shaft voltage, its concrete grammar is that setting is arranged side by side with shaft voltage, is used to reduce the bleeder circuit of shaft voltage.Particularly, on the axle of motor, rosette (electric conductor) is set exactly, lets this disk, thereby form electrostatic capacitance near bearing bracket stand; Perhaps be connected with crown cap with the conductor stator core, thus the voltage difference of change bearing enclose.This invention operability is poor, and the voltage to earth of bearing enclose also is in very high state.3) make the inner ring of bearing and outer ring be in state of insulation, its concrete grammar is that the steel ball that bearing is inner changes to Ceramic Balls.Though this method is remarkable to preventing the galvanic corrosion effect, but cost is higher, is inappropriate for and is applied in the common motor higher cost requirement.4) mode of using conductive tape that motor two ends crown cap is connected motor two ends crown cap current potential is equated, but this method is unreliable, and motor is being installed, and in transportation and the motor operation course, adhesive tape is damaged easily, and comes off easily.
The utility model content
The purpose of the utility model aim to provide a kind of simplicity of design, rational in infrastructure, cost of manufacture is low, prevent the direct current machine of the anti-galvanic corrosion structure of having of galvanic corrosion phenomenon, to overcome weak point of the prior art.
A kind of direct current machine by this purpose design with anti-galvanic corrosion structure; Comprise the stator module that is arranged between first side end cap and second side end cap; With the rotating shaft that passes second side end cap; Its architectural feature is that the outer rim of stator module is equipped with an insulation fixed mount, and the insulation fixed mount is provided with the conduction panel of electrically conducting both sides end cap.
Said insulation fixed mount is installed on the stator module through the lead of its upper edge stator core axial direction setting.The insulation fixed mount is provided with buckle or the draw-in groove that conduction panel is installed.
Said first side end cap is provided with connecting hole, and an end of corresponding first side end cap of conduction panel bends to first side end cap, and the bending place is provided with through hole or the flange hole that is electrically connected with connecting hole.
One end of corresponding second side end cap of said conduction panel exposes stator module, and is provided with bending part and is electrically connected with second side end cap.The outer rim of second side end cap is provided with the encapsulation boss, and the encapsulation boss is electrically connected with the bending part of conduction panel.
The utility model is through being provided with the conduction panel that can make both electrically conductings between first side end cap of motor and second side end cap; Thereby make first side end cap and second side end cap form the equipotentiality body; Reduce the voltage difference between stator and the axle, effectively prevent bearing generation galvanic corrosion phenomenon.It has simplicity of design, rational in infrastructure, cost of manufacture is low, motor long service life, the characteristics being convenient to produce in enormous quantities.
Description of drawings
Fig. 1 is the general assembly structural representation of the utility model one embodiment.
Fig. 2 is the front view of an embodiment stator module and the assembling of insulation fixed mount.
Fig. 3 is the cutaway view that an embodiment stator module and insulation fixed mount, conduction panel, first side end cap assemble.
Fig. 4 is the front view of an embodiment first side end cap.
Fig. 5 is the half sectional view of an embodiment first side end cap.
Fig. 6 is the structural representation of an embodiment conduction panel.
Fig. 7 is the right view of Fig. 6.
Fig. 8 is the half sectional view of an embodiment conduction panel and the assembling of first side end cap.
Fig. 9 is the insulate stereogram of fixed mount of an embodiment.
Figure 10 is the insulate vertical view of fixed mount of an embodiment.
Figure 11 is the insulate upward view of fixed mount of an embodiment.
Figure 12 is the cutaway view behind an embodiment stator module and insulate fixed mount, conduction panel, the first side end cap plastic packaging.
Figure 13 is the front view of Figure 12.
Figure 14 is the structural representation of second side end cap.
Figure 15 is the front view of Figure 14.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Referring to Fig. 1-Figure 15; Originally the direct current machine that has anti-galvanic corrosion structure comprises the rotating shaft 4 that is arranged on the stator module 3 between first side end cap 1 and second side end cap 2 and passes second side end cap 2; The outer rim of its stator module 3 is equipped with an insulation fixed mount 5; Insulation fixed mount 5 is provided with the conduction panel 6 of electrically conducting both sides end cap, and insulation fixed mount 5 plays insulation separating between conduction panel 6 and the stator module 3.
Insulation fixed mount 5 is installed on the stator module 3 through the lead 5.1 of its upper edge stator core axial direction setting, and insulation fixed mount 5 is provided with the buckle 5.2 (or draw-in groove) that conduction panel 6 is installed, and is as shown in Figure 3.First side end cap 1 is provided with connecting hole 1.1; Like Fig. 4, shown in Figure 5; One end of conduction panel 6 corresponding first side end caps 1 is to 1 bending of first side end cap; The bending place is provided with the flange hole (6.1) (or through hole) that is electrically connected with connecting hole 1.1 through modes such as riveting or rivets, like Fig. 6, shown in Figure 7, thereby first side end cap 1 is integrally formed with conduction panel 6.Stator module 3 is through the injection moulding encapsulated moulding, and an end of conduction panel 6 corresponding second side end caps 2 exposes stator module 3, and is shown in figure 12, and conduction panel 6 is provided with bending part 6.2 and is electrically connected with second side end cap 2.The outer rim of second side end cap 2 is provided with encapsulation boss 2.1, is used to be pressed into the encapsulation motor, and behind the encapsulation motor, encapsulation boss 2.1 is electrically connected with the bending part 6.2 of conduction panel 6.
Claims (6)
1. direct current machine with anti-galvanic corrosion structure; Comprise the stator module (3) that is arranged between first side end cap (1) and second side end cap (2); With the rotating shaft that passes second side end cap (2) (4); The outer rim that it is characterized in that stator module (3) is equipped with an insulation fixed mount (5), and insulation fixed mount (5) is provided with the conduction panel (6) of electrically conducting both sides end cap.
2. according to the said direct current machine of claim 1, it is characterized in that said insulation fixed mount (5) is installed on the stator module (3) through the lead (5.1) that its upper edge stator core axial direction is provided with anti-galvanic corrosion structure.
3. according to the said direct current machine of claim 2, it is characterized in that said insulation fixed mount (5) is provided with buckle (5.2) or the draw-in groove that conduction panel (6) is installed with anti-galvanic corrosion structure.
4. according to each said direct current machine of claim 1-3 with anti-galvanic corrosion structure; It is characterized in that said first side end cap (1) is provided with connecting hole (1.1); One end of corresponding first side end cap of conduction panel (6) (1) is to first side end cap (1) bending, and the bending place is provided with through hole or flange hole (6.1) that are electrically connected with connecting hole (1.1).
5. according to the said direct current machine of claim 4, it is characterized in that an end of corresponding second side end cap of said conduction panel (6) (2) exposes stator module (3), and be provided with bending part (6.2) and be electrically connected with second side end cap (2) with anti-galvanic corrosion structure.
6. according to the said direct current machine with anti-galvanic corrosion structure of claim 4, it is characterized in that the outer rim of said second side end cap (2) is provided with encapsulation boss (2.1), encapsulation boss (2.1) is electrically connected with the bending part (6.2) of conduction panel (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200665995U CN202488283U (en) | 2012-02-27 | 2012-02-27 | Direct current motor with electrolytic corrosion prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200665995U CN202488283U (en) | 2012-02-27 | 2012-02-27 | Direct current motor with electrolytic corrosion prevention structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488283U true CN202488283U (en) | 2012-10-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200665995U Expired - Lifetime CN202488283U (en) | 2012-02-27 | 2012-02-27 | Direct current motor with electrolytic corrosion prevention structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN202488283U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969859A (en) * | 2012-11-08 | 2013-03-13 | 佛山市威灵电子电器有限公司 | Installation structure of breakover plate of direct current motor |
| CN103078438A (en) * | 2012-10-30 | 2013-05-01 | 江苏富天江电子电器有限公司 | Structure for reducing electrostatic corrosion of motor |
| CN103840632A (en) * | 2012-11-22 | 2014-06-04 | 松下电器产业株式会社 | Motor and electric apparatus equipped with the motor |
| WO2014101363A1 (en) * | 2012-12-28 | 2014-07-03 | 中山大洋电机制造有限公司 | Plastic-seededmotor |
| CN104836384A (en) * | 2015-05-27 | 2015-08-12 | 湖州越球电机有限公司 | Device and method capable of preventing electrolytic corrosion of motor bearing |
| CN105048692A (en) * | 2015-08-25 | 2015-11-11 | 广东威灵电机制造有限公司 | Bearing electric corrosion prevention structure of plastic package motor |
| CN105553155A (en) * | 2016-02-29 | 2016-05-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator assembly and motor |
| EP3021461A3 (en) * | 2014-11-14 | 2016-08-31 | Guangdong Welling Motor Manufacturing Co., Ltd. | Electric motor |
| CN103872833B (en) * | 2012-12-07 | 2017-07-14 | 日本电产高科电机株式会社 | Motor and air conditioner |
| CN109038959A (en) * | 2018-09-13 | 2018-12-18 | 珠海凯邦电机制造有限公司 | The anti-electric arbor of motor bearings, Stator and electrical machine |
| WO2020211410A1 (en) * | 2019-04-18 | 2020-10-22 | 佛山市威灵洗涤电机制造有限公司 | Stator assembly and electric 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 |
| WO2021164522A1 (en) * | 2020-02-17 | 2021-08-26 | 广东美的白色家电技术创新中心有限公司 | Electric motor and electrical appliance |
-
2012
- 2012-02-27 CN CN2012200665995U patent/CN202488283U/en not_active Expired - Lifetime
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078438A (en) * | 2012-10-30 | 2013-05-01 | 江苏富天江电子电器有限公司 | Structure for reducing electrostatic corrosion of motor |
| CN102969859A (en) * | 2012-11-08 | 2013-03-13 | 佛山市威灵电子电器有限公司 | Installation structure of breakover plate of direct current motor |
| CN102969859B (en) * | 2012-11-08 | 2016-03-30 | 佛山市威灵电子电器有限公司 | Installation structure of breakover plate of direct current motor |
| CN103840632A (en) * | 2012-11-22 | 2014-06-04 | 松下电器产业株式会社 | Motor and electric apparatus equipped with the motor |
| CN103840632B (en) * | 2012-11-22 | 2017-10-31 | 松下电器产业株式会社 | Motor and the electric equipment for possessing the motor |
| CN107302278B (en) * | 2012-12-07 | 2021-02-23 | 日本电产高科电机株式会社 | Motor and air conditioner |
| CN107302278A (en) * | 2012-12-07 | 2017-10-27 | 日本电产高科电机株式会社 | Motor and air conditioner |
| CN103872833B (en) * | 2012-12-07 | 2017-07-14 | 日本电产高科电机株式会社 | Motor and air conditioner |
| WO2014101363A1 (en) * | 2012-12-28 | 2014-07-03 | 中山大洋电机制造有限公司 | Plastic-seededmotor |
| US9385569B2 (en) * | 2012-12-28 | 2016-07-05 | Zhongshan Broad-Ocean Motor Manufacturing Co., Ltd. | Plastic-package motor |
| US20140183983A1 (en) * | 2012-12-28 | 2014-07-03 | Zhongshan Broad-Ocean Motor Manufacturing Co., Ltd. | Plastic-package motor |
| EP3021461A3 (en) * | 2014-11-14 | 2016-08-31 | Guangdong Welling Motor Manufacturing Co., Ltd. | Electric motor |
| AU2015200053B2 (en) * | 2014-11-14 | 2017-01-19 | Guangdong Welling Motor Manufacturing Co., Ltd. | Motor |
| CN104467294B (en) * | 2014-11-14 | 2017-11-10 | 广东威灵电机制造有限公司 | Motor |
| CN104836384A (en) * | 2015-05-27 | 2015-08-12 | 湖州越球电机有限公司 | Device and method capable of preventing electrolytic corrosion of motor bearing |
| CN105048692A (en) * | 2015-08-25 | 2015-11-11 | 广东威灵电机制造有限公司 | Bearing electric corrosion prevention structure of plastic package motor |
| CN105048692B (en) * | 2015-08-25 | 2017-12-01 | 广东威灵电机制造有限公司 | The anti-bearing electric corrosion structure of plastic packaging motor |
| CN105553155A (en) * | 2016-02-29 | 2016-05-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator assembly and motor |
| CN109038959A (en) * | 2018-09-13 | 2018-12-18 | 珠海凯邦电机制造有限公司 | The anti-electric arbor of motor bearings, Stator and electrical machine |
| CN109038959B (en) * | 2018-09-13 | 2023-11-28 | 珠海凯邦电机制造有限公司 | Electric erosion preventing structure of motor bearing, stator and motor |
| WO2020211410A1 (en) * | 2019-04-18 | 2020-10-22 | 佛山市威灵洗涤电机制造有限公司 | Stator assembly and electric motor |
| CN111835105A (en) * | 2019-04-18 | 2020-10-27 | 佛山市威灵洗涤电机制造有限公司 | Stator module and motor |
| CN111835105B (en) * | 2019-04-18 | 2022-12-06 | 佛山市威灵洗涤电机制造有限公司 | Stator module and motor |
| US11728699B2 (en) | 2019-04-18 | 2023-08-15 | Foshan Welling Washer Motor Manufacturing Co., Ltd. | Stator assembly and electric 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 |
| WO2021164522A1 (en) * | 2020-02-17 | 2021-08-26 | 广东美的白色家电技术创新中心有限公司 | Electric motor and electrical appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |