CN100349366C - Low-interference electric motor - Google Patents
Low-interference electric motor Download PDFInfo
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- CN100349366C CN100349366C CNB2005100489856A CN200510048985A CN100349366C CN 100349366 C CN100349366 C CN 100349366C CN B2005100489856 A CNB2005100489856 A CN B2005100489856A CN 200510048985 A CN200510048985 A CN 200510048985A CN 100349366 C CN100349366 C CN 100349366C
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- motor
- housing
- brush assembly
- inductance
- low interference
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Abstract
The present invention relates to a motor with low interference and novel structure, which adopts structure that a back end cover and a casing are generally formed into integration, and a front end cover can be disassembled. A rotating shaft of the motor is matched and connected with a casing by a boss arranged on the back end, so that the size of the motor is reduced, the assembly difficulty of the motor is decreased, and the production efficiency is improved. A filter circuit is arranged on brush assembly in the inner side of the back end cover of the motor, wherein the circuit structure is composed of inductors and an electric brush which are connected between the two inductors, after the inductors and the electric brush are connected in parallel. In addition, the inductors are connected in side to an input positive and an input negative poles of a power supply.
Description
Technical field
The present invention relates to a kind of motor, especially relate to a kind of low interference, the micromotor of novel structure.
Background technology
In conventional motors, rear end cap and housing generally are made as integral body, and front end housing is dismountable structure.The rotation axis of motor is matched by boss and the housing be located on the rear end.Because this boss need process by drawing process, and rear end cap and housing be when being made as one, and end cap is positioned at the bottommost of housing, so just stretching has been caused bigger difficulty.The efficient of end cap processing is greatly limited.Also be unfavorable for guaranteeing the concentricity of whole motor, the rotation axis swing strengthens when making machine operation, so operating noise is bigger than normal.
Along with the develop rapidly of science, various device is also more and more advanced in the electronic applications, and it is various to become increasingly complex.The electromagnetic interference that produces in the motor operation course, noise jamming, signal energies such as electrical network public hazards all can be brought harmful effect to the result of use of modern precision electronic instrument.Have many motors to be provided with filter circuit now yet, reduce radiated interference, but its circuit is often comparatively complicated, reliability is not high, or is limited in scope.
Summary of the invention
It is simple to have the purpose of this invention is to provide a kind of manufacturing procedure, be easy to assembling, be easy to the motor of the low interference of assembled construction compactness, in motor, be provided with the filter circuit of a compatibility, can suppress the electromagnetic interference of 30MHZ-1GHZ frequency range by the CE demonstration.It is big to solve existing in prior technology spare and accessory parts difficulty of processing, the assembling process complexity, and electroplating effect is not good, is difficult for assembling, and the technical problem of motor signal energy interference.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of motor of low interference, comprise electric machine casing, be located at stator and rotor in the housing, end cap and housing are matched, the rotation axis output of rotor passes housing and extends to the outside, the rotation axis of described rotor is provided with the bearing of phase configuration with it, it is characterized in that having connected dismountable rear end cap on described housing, and front end housing and housing are made as one; Be provided with brush assembly in described rear end cap inboard, be provided with bayonet socket around the described brush assembly, be inlaid with the elasticity contiguous block on the described bayonet socket, it is corresponding that described housing is provided with the elasticity contiguous block of inlaying on buckle and the described brush assembly, described buckle and the mutual snapping of described elasticity contiguous block, and it is tightr that the elasticity contiguous block makes that bonnet combines with motor casing, stable, and make its stress balance, avoid the stress of part excessive, increase the service life.On the described brush assembly filter circuit is housed, described filter circuit is by the electric capacity in parallel with brush, and between two inductance of series connection, the other end of described two inductance is connected respectively to power positive cathode.
The present invention is designed to demountable structure with rear end cap, so just greatly reduces the difficulty of processing of the boss on the rear end cap.Can fully guarantee the concentricity of whole motor.Make the throw of rotation axis reduce greatly, thus the time ground noise that reduced work effectively.Also reduced simultaneously assembling ground difficulty, the quality of plating also is significantly improved.In addition, front end housing and housing are made as one, have increased the integrated degree of whole motor, have avoided the housing that produces because of vibrations and the collision of front end housing, thereby have further reduced noise.Also help the assembling of motor in addition.
As preferably, hang down the motor that disturbs, it is characterized in that in described filter circuit, having adopted 0.10～0.30 μ F, the electric capacity of 400V and two 5～10 μ H, the inductance of 0.5～1.5KHZ.Described circuit and described parameter compatibility test are proved by CE, and described filter circuit makes the antijamming capability of motor strengthen greatly, can suppress the electromagnetic interference of 30MHZ-1GHZ frequency range.
As preferably, described brush assembly is provided with brush slot staggered relatively, and described brush slot side is provided with the inductance seat, the other electric capacity groove that is provided with of described inductance seat.Linan mutually of brush slot and inductance seat is adorned, and has increased the installation strength of inductance seat and electric capacity groove, and this final result has effectively been utilized the space and made things convenient for wiring to greatest extent.
As preferably, described brush slot side in addition is provided with Line pressing buckle.
As preferably, the inductance seat that described brush assembly is provided with is the cylinder that is vertical on the brush assembly plane, is provided with on the wall of described inductance seat and the perpendicular open slot in brush assembly plane.Inductance in cylinder bodily form inductance seat and the described filter circuit is complementary.
As preferably, described brush assembly is provided with its below of Line pressing buckle and is the hollow core cuboid, and the top is an elastic sheet.
As preferably, described motor field frame front end housing is an inner cavity, is provided with bearing pedestal in the described inner cavity.The cavity inner pedestal that bearing is embedded in electric machine casing front end central authorities is beneficial to the location of output shaft, and can reduce the volume of motor so again.
As preferably, described rotation axis output and bearing are matched, and described bearing is embedded in the bearing pedestal of electric machine casing front end housing central authorities.
As preferably, the central authorities on described detachable rear end cap are provided with boss, cave in the rear end cap intersection in described boss bottom.The outer surface indent can make the rear end cap inner surface stretch out, and under the situation of overall volume not, has increased the rear end cap tongue degree of depth, and it is tightr to make that it is connected with rotation axis.
Description of drawings
Accompanying drawing 1 is a general assembly schematic diagram of the present invention;
Accompanying drawing 3 is sectional structure schematic diagrames of a kind of rear end cap of the present invention;
Accompanying drawing 4 is motor field frame structural representations of the present invention;
Accompanying drawing 5 is rear end cap brush assembly structural representations of the present invention.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: the motor of low noise, comprise electric machine casing 1, be located at stator 15 and rotor 16 in the housing 1, end cap and housing 1 are matched, and the rotation axis output 7 of rotor 16 passes housing 1 and extends to the outside.Connected rear end cap 2 on the housing 1, be provided with boss 3 in the central authorities of rear end cap 2, the rotation axis 4 of described rotor 16 is matched with boss 3 inner chambers on the rear end cap 2 by ball bearing 5.Ball bearing 5 is coupled to boss 3 inner chambers.Be provided with brush assembly 6 in the inboard of rear end cap 2, in Fig. 3 brush assembly 6, pack into electric capacity 13 parallel connections of the brush slot 24 and the electric capacity groove 22 of packing into of brush, the centre of two inductance 12 is gone in series connection again.Rotation axis output 7 is matched with bearing 8, and described bearing 8 is embedded in the cavity 9 of electric machine casing 1 front end central authorities.Evenly be furnished with support on the rear end cap 2, be bumped into contiguous block 30 on the support 27, described housing 1 end evenly is furnished with some and contiguous block 30 corresponding buckles 31, both mutual snappings.Installation thus.
During work, motor operates reposefully, electric capacity in the filter circuit and inductance have the energy storage effect, when the voltage that the electric capacity in parallel with brush is supplied with at power supply raises, can store portion of energy, and when supply voltage reduces, just can energy be discharged, make load voltage smoother, both electric capacity had flat ripple effect, with the inductance that brush is together in series, when the electric current of power supply supply increased, it can store energy, and when electric current reduces, the handlebar energy discharges, and makes load current smoother, and promptly inductance also has flat ripple effect.Reduce the radiation of motor like this.This circuit parameter by CE demonstration particularly a: 0.100.30uF, the electric capacity of 400～500V, two inductance parameters scopes are all 5～10uH, 0.5～1.5KHZ, brush be series between inductance and the inductance after electric capacity is in parallel, inductance side in addition connects the both positive and negative polarity of input power supply respectively.Described circuit can suppress the electromagnetic interference of 30MHZ-1GHZ frequency range, and the radiated interference of motor is weakened greatly.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used boss morely, ball bearing, the possibility of using other term do not got rid of in terms such as rear end cap and cavity processing.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (9)
1. one kind is hanged down the motor that disturbs, comprise electric machine casing, be located at stator and rotor in the housing, end cap and housing are matched, the rotation axis output of rotor passes housing and extends to the outside, the rotation axis of described rotor is provided with the bearing that is complementary with it, it is characterized in that having connected dismountable rear end cap (2) on described housing (1), and front end housing and housing (1) are made as one; Be provided with brush assembly (6) in described rear end cap inboard, described brush assembly (6) is provided with bayonet socket on every side, be inlaid with elasticity contiguous block (30) on the described bayonet socket, it is corresponding that described housing (1) is provided with the elasticity contiguous block of inlaying on buckle (31) and the described brush assembly (6) (30), described buckle and the mutual snapping of described elasticity contiguous block, described brush assembly (6) is provided with filter circuit, described filter circuit is to be connected between two inductance by the electric capacity in parallel with brush (13), and the other end of described two inductance is connected respectively to power positive cathode.
2. the motor of low interference according to claim 1 is characterized in that having adopted 0.10～0.30uF in described filter circuit, the electric capacity of 400V and two 5～10uH, the inductance of 0.5～1.5KHZ.
3. the motor of low interference according to claim 1 is characterized in that being provided with brush slot staggered relatively (24) on described brush assembly (6), and described brush slot (24) side is provided with the inductance seat, is provided with electric capacity groove (22) between the described inductance seat.
4. the motor of low interference according to claim 3 is characterized in that being provided with Line pressing buckle in other side of described brush slot (24).
5. the motor of low interference according to claim 3 is characterized in that the inductance seat that is provided with is perpendicular to the cylinder on the brush assembly plane, is provided with and the perpendicular open slot in brush assembly plane on the wall of described inductance seat on described brush assembly.
6. the motor of low interference according to claim 4 is characterized in that being the hollow core cuboid at the Line pressing buckle that is provided with on the described brush assembly below it that top is an elastic sheet.
7. according to the motor of claim 1 or 2 or 3 or 4 described low interference, it is characterized in that described motor field frame front end housing is an inner cavity, is provided with bearing pedestal in the described inner cavity.
8. the motor of low interference according to claim 7 is characterized in that described rotation axis output (7) and bearing (8) are matched, and described bearing (8) is embedded in the bearing pedestal (9) of electric machine casing (1) front end housing central authorities.
9. according to the motor of claim 1 or 2 or 3 or 4 described low interference, it is characterized in that the central authorities on described detachable rear end cap (2) are provided with boss (3), described boss bottom and capping intersection, rear end cave in (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100489856A CN100349366C (en) | 2005-01-21 | 2005-01-21 | Low-interference electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100489856A CN100349366C (en) | 2005-01-21 | 2005-01-21 | Low-interference electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1645717A CN1645717A (en) | 2005-07-27 |
| CN100349366C true CN100349366C (en) | 2007-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100489856A Active CN100349366C (en) | 2005-01-21 | 2005-01-21 | Low-interference electric motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN100349366C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367049A (en) * | 2010-12-18 | 2012-03-07 | 襄阳宇清传动科技有限公司 | Electric-drive mechanical variable-speed power transmission system with integrated motor and transmission case |
| CN102092287A (en) * | 2010-12-18 | 2011-06-15 | 襄樊宇清电动汽车有限公司 | Electric drive mechanical variable power transmission system with integrated motor and transmission gear |
| CN102231466A (en) * | 2011-04-11 | 2011-11-02 | 许晓华 | Brush carrier |
| CN108054893A (en) * | 2017-11-30 | 2018-05-18 | 上海航天控制技术研究所 | A kind of permanent magnet synchronous servo motor structure of Curve guide impeller |
| CN108923591B (en) * | 2018-09-28 | 2023-12-01 | 浙江凯威碳材料有限公司 | Semi-circular ring electromagnetic compatibility anti-interference protection device for micro motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4342934A (en) * | 1979-04-12 | 1982-08-03 | Robert Bosch Gmbh | Prefabricated brush holder assembly for use in small electric motors |
| JPS6185052A (en) * | 1984-09-28 | 1986-04-30 | Nissan Motor Co Ltd | Dc motor |
| CN1089065A (en) * | 1992-12-18 | 1994-07-06 | 马渊马达株式会社 | Miniature motor |
| CN2777833Y (en) * | 2005-01-21 | 2006-05-03 | 横店集团东磁有限公司 | Low interference motor |
-
2005
- 2005-01-21 CN CNB2005100489856A patent/CN100349366C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4342934A (en) * | 1979-04-12 | 1982-08-03 | Robert Bosch Gmbh | Prefabricated brush holder assembly for use in small electric motors |
| JPS6185052A (en) * | 1984-09-28 | 1986-04-30 | Nissan Motor Co Ltd | Dc motor |
| CN1089065A (en) * | 1992-12-18 | 1994-07-06 | 马渊马达株式会社 | Miniature motor |
| CN2777833Y (en) * | 2005-01-21 | 2006-05-03 | 横店集团东磁有限公司 | Low interference motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1645717A (en) | 2005-07-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG DONGYANG CHENGJI MOTOR CO., LTD. Free format text: FORMER NAME: HENGDIAN GROUP DMEGC JOINT-STOCK CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 322118 Hengdian Industrial Zone, Jinhua, Zhejiang, China (head of bridge), Dongyang Patentee after: Zhejiang Dongyang Chengji Electric Motor Co., Ltd. Address before: 322118 Zhejiang Province, Dongyang City Industrial Zone Hengdian dongci Co Ltd Patentee before: Hengdian Group DMEGC Joint-Stock Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 322118 Hengdian Industrial Zone, Jinhua, Zhejiang, China (head of bridge), Dongyang Patentee after: Zhejiang city of Dongyang Province east Cheng Electronic Co., Ltd. Address before: 322118 Hengdian Industrial Zone, Jinhua, Zhejiang, China (head of bridge), Dongyang Patentee before: Zhejiang Dongyang Chengji Electric Motor Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |