CN101997366A - Electrical contact of commutator motor - Google Patents
Electrical contact of commutator motor Download PDFInfo
- Publication number
- CN101997366A CN101997366A CN201010250908XA CN201010250908A CN101997366A CN 101997366 A CN101997366 A CN 101997366A CN 201010250908X A CN201010250908X A CN 201010250908XA CN 201010250908 A CN201010250908 A CN 201010250908A CN 101997366 A CN101997366 A CN 101997366A
- Authority
- CN
- China
- Prior art keywords
- commutator
- brush
- motor
- oil
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010687 lubricating oil Substances 0.000 claims description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000314 lubricant Substances 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 15
- 230000001680 brushing effect Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
The present invention provides a commutator motor capable of keeping an oil film of a commutator and implementing a long life with high rotation of structure miniaturization. The commutator and a brush are enclosed independently in a housing, and lubricant oil is sealed, such that a contact part is always dipped in the lubricant oil. By means of said structure, it is possible to prevent the oil film from peeling due to an centrifugal force in driving with high rotation, and obtain effects of rust protection of the contact part without drive and oxidation resistance of the lubricant oil due to seal, such that the life of the motor is long to make for the earth environment.
Description
Technical field
The present invention relates to a kind of via the commutator motor of brush to the rotor power supply.
Background technology
Current, be that the motor of representative is utilized at various industrial circles with the motor, by structure corresponding and characteristic, and be used for various drive sources with purposes.In this motor, as representational structure the real flat 01-146769 (hereinafter referred to as patent documentation 1) that opens of JP is arranged, it is a kind of commutator motor that has used following driving method: by at the magnet of being located at shell side be located at the magnetic force that acts between the coil of rotor-side, make the rotor rotation.
In addition, as with in contrast configuration and dispose the hollow motor of rotor coil, apply for and disclose the flat 05-076158 of TOHKEMY (hereinafter referred to as patent documentation 2) in the magnet periphery.In the past, structurally there were following problem in above-mentioned patent documentation 1 and 2 commutator motors of being put down in writing: by long driving, because of the friction between brush-commutator of being located at motor inside, and formed oxide-film on the brush surface.In documents 1 and 2 structures of being put down in writing, about this problem, the maintenance groove of gas phase lubricant is set at the brush base portion in patent documentation 1, in the structure that patent documentation 2 is put down in writing, oil film is set between brush-commutator, obtain to alleviate the effect of the friction that between brush-commutator, produces thus.
Patent documentation 1:JP opens flat 01-146769 in fact
Patent documentation 2:JP spy opens flat 05-076158
Though have above-mentioned effect, on the other hand, there be the problem of motor body with respect to the durability decline of vibration in the commutator motor that documents 1 is put down in writing.This be because, because be the structure that is provided with space part at the brush base portion that keeps body of the brush, the maintenance area of body of the brush reduces, so the brush confining force during the positive and negative rotation of motor weakens.
In addition, in the invention that documents 2 is put down in writing, the miniaturization along with the motor that advances in recent years has the problem that is difficult to remain on the oil film that forms in the commutator.This be because, remedy the torque that reduces because of miniaturization by increasing rotating speed, thereby the low-viscosity oil meeting corresponding with the height rotation be dispersed in shell along with the rotation of output shaft.
In addition, the commutator motor that documents 2 is put down in writing does not structurally possess and replenishes the structure disperse to the oil of enclosure, and therefore, in the motor of miniaturization, the oil film of commutator disperses along with driving, is difficult to obtain the effect that documents 2 is put down in writing.
Summary of the invention
In order to address the above problem, its purpose is to provide a kind of commutator motor in the present invention, and it also can keep oil film, the realization long lifetime of commutator in following the height rotationization of structure miniaturization.
To achieve these goals, use following structure in the invention that technical scheme 1 is put down in writing: in the enclosure of motor, the brush of generation contact friction and the contact of commutator are enclosed in enclosure independently during with driving, and enclose lubricating oil.By using this structure, in the invention that technical scheme 1 is put down in writing, enclose oil in above-mentioned airtight space, when high speed rotating, also can keep the lubricated of commutator face.
In addition,, when motor driven, can reduce the spark and the consequent black powder that between brush-commutator, produce, can between brush-commutator, keep good "on" position by when driving, contact portion being immersed in the lubricating oil.In addition, the friction that produces between brush-commutator is reduced by lubricating oil, therefore can reduce the dead point that produces because of the wearing and tearing of brushing.
In addition, suppressed the generation of above-mentioned spark, so need not to be arranged on the capacitor that is provided with for identical purpose in the existing motor by lubricating oil.Therefore can make and comprise control system in interior device integral miniaturization.
In addition, become the internal structure of brush and the always lubricated oil covering of commutator by enclosing oil.Therefore can prevent to produce the oxidation of contact portion, improve the reliability when stopping along with effluxion.In addition, become the structure that is sealed about oil, thus not only above-mentioned brush portion branch, the oxidation of the oil that can also suppress to enclose self.
In addition, used following structure in the structure that technical scheme 2 is put down in writing: the inwall of the confined space of technical scheme 1 record is made of the brush platform.Therefore, guarantee volume in the enclosure in this limited space of portion to greatest extent as the confined space of oil groove.
In addition, assemble as the part of confined space, can shorten the distance between brush and power supply terminal by the brush platform that will keep brushing base portion.Therefore, the power pack of motor can be configured less.
In addition, by will brush platform be used for airtight, and constitute the brush platform play a role as seal.Therefore, can simplify the structure of motor, and seal is set in addition carries out comparing when airtight, can constitute motor with less number of fitting parts.
As mentioned above, the structure that the application of the invention is put down in writing can provide a kind of oil film in the commutator, commutator motor of realization long lifetime also can kept in following the height rotationization of structure miniaturization.
Description of drawings
Fig. 1 is the stereogram of the commutator motor that uses in an embodiment of the present invention.
Fig. 2 is the cutaway view under the A-A ' cross section of commutator motor shown in Figure 1.
Fig. 3 is the confined space under the A-A ' cross section shown in Figure 2.
Fig. 4 is the exploded perspective view of the commutator motor that uses in an embodiment of the present invention.
Fig. 5 be use in an embodiment of the present invention first the brush modification stereogram.
Fig. 6 be use in an embodiment of the present invention second the brush modification stereogram.
Fig. 7 is the stereogram of the three-brush modification used in an embodiment of the present invention.
Label declaration
1 bearing
2 bearing holder (housing, cover)s
3
4 liners
5 commutators
6 commutator side bearings
7 inboard covers
8 brushes
9 brush platforms
10 outside mask
11 caps
12 shells
13 magnet
14 coils
The B impregnating metal
The C jog
The D confined space
Embodiment
Below utilize Fig. 1～Fig. 6 that most preferred embodiment of the present invention is shown.
Fig. 1 represents the stereogram of the commutator motor that uses in the present embodiment, the cutaway view under the A-A ' cross section of the commutator motor that uses in Fig. 2 and Fig. 3 presentation graphs 1, and Fig. 4 represents exploded perspective view.
By Fig. 1 and Fig. 2, Fig. 3 as can be known, the commutator motor of Shi Yonging has used hollow-core construction in the present embodiment.More particularly, its structure is: fixed magnet 13 on the bearing holder (housing, cover) 2 that is fixed in shell 12, apply voltage via brush 8 to the commutator 5 that is electrically connected with coil 14, thereby the axle 3 that is fixed with commutator 5 rotates.Thereby, can reduce moment of inertia, obtain good adaptability.
In addition, in the present embodiment, in shell 12 inside, the brush 8 and the contact of commutator 5 are set, and enclose contact lubricating oil in confined space D.Therefore, spark and consequent black powder in the time of can reducing energising between brush-commutator.
This has following problem: because contact portion always covers by oil film, and the therefore height rotationization of Yin Mada and cause the temperature rising of contact portion in existing contact point structure, the lubricating oil that viscosity is low is removed because of the centrifugal force in the commutator generation.In the structure of present embodiment, by contact portion is immersed in the lubricating oil, can be always with oil film protection contact portion.
In addition, though motor in the past can reduce the spark that produces by other connection capacitor between above-mentioned brush-commutator, become the structure that does not produce spark by said structure in the present invention.Therefore, need not to be provided with the capacitor that in the past will be provided with, can reduce the number of fitting parts of motor integral body.
In addition, contact portion is immersed in the lubricating oil, can be suppressed at contact portion and generates oxide-film by constituting.Therefore, not only can prevent the deterioration of the contact that the friction when driving causes, but also the effect of the rustless property of the contact can obtain to improve non-the driving time.In addition, also be airtight structure about the lubricating oil of enclosing in the present embodiment.Therefore, except above-mentioned effect, can also suppress the oxidation of lubricating oil self.
In addition, by Fig. 2, Fig. 3 and Fig. 4 as can be known, the bearing 6 with commutator side uses as the part of the confined space D of brush 8 and commutator 5 in the present embodiment.Therefore, constitute as the total airtight contact lubricating oil of the lubricating oil that drives usefulness.By using this structure, the motor of present embodiment record not only can be protected the contact between brush-commutator, can also be to the drive division supplying lubricating oil of contact side.
In addition, the commutator side peristome about shell 12 has used following structure: block peristome by brushing platform 9 as seal, and be provided with the cap 11 that can open and close from it in the present embodiment.Therefore, can guarantee the volume of above-mentioned confined space D to greatest extent, and during with accessory that airtight usefulness is set in addition mutually specific energy constitute confined space with less number of fitting parts.In addition, be the inwall of confined space by making brush platform inwall, can shorten brush 8 and be located at distance between the power supply terminal of cover 10 outsides, be configured the power pack of motor less.
Be provided with the structure of impregnating metal B with the contact portion rear side of commutator in the brush that Fig. 5 represents to use in the present embodiment, Fig. 6 is illustrated in this contact portion rear side and is provided with the independently structure of jog C, and Fig. 7 represents that this contact portion rear side that will brush self forms concavo-convex structure.
Shown in the amplification stereogram of Fig. 5～Fig. 7, in the present embodiment about the brush can also constitute, by in contact portion rear side impregnating metal B is set with commutator, jog C keeps above-mentioned lubricating oil.By using this structure, in the commutator motor that present embodiment is put down in writing,, also can keep the lubricated of contact portion by the lubricating oil that keeps in above-mentioned rear side even former thereby when becoming a small amount of because of certain at the lubricating oil of enclosing.
As mentioned above, by the structure of using present embodiment to put down in writing, can obtain in following the height rotationization of structure miniaturization, also can keep the commutator motor that lubricates, realizes long lifetime in the commutator.
Claims (2)
1. a commutator motor is characterized in that, encloses lubricating oil in being located at the confined space of enclosure, and has disposed the contact of brush and commutator.
2. commutator motor according to claim 1, wherein, the part of the inwall of above-mentioned confined space is made of the brush platform.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009185936A JP2011041390A (en) | 2009-08-10 | 2009-08-10 | Electrical contact of commutator motor |
| JP2009-185936 | 2009-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101997366A true CN101997366A (en) | 2011-03-30 |
Family
ID=43768553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010250908XA Pending CN101997366A (en) | 2009-08-10 | 2010-08-10 | Electrical contact of commutator motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2011041390A (en) |
| CN (1) | CN101997366A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245239A (en) * | 1991-09-11 | 1993-09-14 | Matsushita Electric Industrial Co., Ltd. | Small D.C. motor |
| JP2000287414A (en) * | 1999-03-30 | 2000-10-13 | Matsushita Electric Ind Co Ltd | Motor |
| JP2001025217A (en) * | 1999-07-05 | 2001-01-26 | Sankyo Seiki Mfg Co Ltd | Commutator motor |
| CN1908457A (en) * | 2005-08-04 | 2007-02-07 | 日信工业株式会社 | Vehicle disk brake actuator |
| CN101171735A (en) * | 2005-05-09 | 2008-04-30 | 索尼计算机娱乐公司 | Vibration device |
-
2009
- 2009-08-10 JP JP2009185936A patent/JP2011041390A/en not_active Withdrawn
-
2010
- 2010-08-10 CN CN201010250908XA patent/CN101997366A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245239A (en) * | 1991-09-11 | 1993-09-14 | Matsushita Electric Industrial Co., Ltd. | Small D.C. motor |
| JP2000287414A (en) * | 1999-03-30 | 2000-10-13 | Matsushita Electric Ind Co Ltd | Motor |
| JP2001025217A (en) * | 1999-07-05 | 2001-01-26 | Sankyo Seiki Mfg Co Ltd | Commutator motor |
| CN101171735A (en) * | 2005-05-09 | 2008-04-30 | 索尼计算机娱乐公司 | Vibration device |
| CN1908457A (en) * | 2005-08-04 | 2007-02-07 | 日信工业株式会社 | Vehicle disk brake actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011041390A (en) | 2011-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7473034B2 (en) | Hydrodynamic bearing device, motor, and disk driving apparatus | |
| CN100526663C (en) | Fan, motor and its bearing structure | |
| KR20070066918A (en) | Motor assembly with multifunctional components | |
| US20030164653A1 (en) | Fluid dynamic pressure bearing for small flat motor, small flat motor, fan motor, and forced air feed type air cell | |
| US20100239194A1 (en) | Disk drive device improved in handling property | |
| CN110601400A (en) | Oil immersion type integrated permanent magnet brushless direct current motor | |
| CN101997366A (en) | Electrical contact of commutator motor | |
| JPS5972954A (en) | Underwater dc motor | |
| JP3261329B2 (en) | Fixed shaft type motor without output shaft | |
| JP2002034205A (en) | Fan motor with oil-retaining bearing | |
| US3405295A (en) | Thrust bearing and seal assembly | |
| JPS61244241A (en) | Underwater motor | |
| JP4173430B2 (en) | Rotating electric machine armature and rotating electric machine | |
| CN115549346A (en) | Drive device and vehicle | |
| US2959696A (en) | Bearing assembly | |
| KR101433765B1 (en) | Non-contact slip-ring type motor | |
| CN108923607A (en) | Micro hollow cup is brushless cylinder vibrating motor device | |
| WO2021024509A1 (en) | Coreless motor and power generator | |
| CN206442220U (en) | Vertical machine | |
| JP2021150974A (en) | Motor assembly | |
| JP2013252048A (en) | Spindle motor | |
| KR101436254B1 (en) | Motor assembly for fuel pump | |
| CN212518701U (en) | End cover assembly, motor and electric stay bar | |
| WO2004004097A1 (en) | Commutatorless dc motor or universal motor | |
| JP3386965B2 (en) | Bearing structure of spindle motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110330 |