WO2005025035A1 - 電気機械用カーボンブラシ - Google Patents
電気機械用カーボンブラシ Download PDFInfo
- Publication number
- WO2005025035A1 WO2005025035A1 PCT/JP2004/013272 JP2004013272W WO2005025035A1 WO 2005025035 A1 WO2005025035 A1 WO 2005025035A1 JP 2004013272 W JP2004013272 W JP 2004013272W WO 2005025035 A1 WO2005025035 A1 WO 2005025035A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brush
- silicone oil
- electric machine
- water
- soluble
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/12—Manufacture of brushes
Definitions
- the present invention relates to a power brush for an electric machine, and more particularly to a power brush for an electric machine used for a small motor.
- Electric motors are becoming smaller, larger in capacity, and higher in output.
- motors used in vacuum cleaners are required to be smaller and have higher suction power.
- the outer diameter of the motor fan is reduced, and the motor is rotated at an ultra-high speed (30,000 rpr or more).
- a brush power brush for an electric machine
- a commutator which is a conductive rotating body
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-56964 discloses that a brush is coated with a metal such as copper to partially reduce the specific resistance of the brush. It discloses a method of reducing the number to. In this way, the apparent resistivity of the brush is reduced, which reduces the temperature rise of the brush, stabilizes commutation, reduces brush wear, and increases motor efficiency.
- Patent Document 2 discloses a method for improving brush wear characteristics by impregnating silicone oil into pores of a brush. I have. In this method, by improving the slidability between the brush and the commutator, the temperature rise of the brush is suppressed, and the wear of the brush is reduced.
- the present invention has been made in view of such a situation, and ensures a more stable commutation at any time, and has a high efficiency, a long service life, a reduced temperature, a reduced sliding noise, and a reduced commutator wear for the motor. It is an object of the present invention to provide a power brush for an electric machine which can obtain the following. Disclosure of the invention
- a carbon brush for an electric machine of the present invention is a power brush for an electric machine pressed against a conductive rotating body, and comprises an aggregate containing carbon as at least one component and a binder.
- the material is a brush base material, and the 7j-soluble lubricant is contained in the carbon brush for electric machines, and the content of the 7K-soluble lubricant is 0.2 to 10% by weight of the brush base material. Characterized.
- Brush bases composed of aggregates and binders have voids called "pores" .
- impregnation refers to the presence of a water-soluble lubricant in the pores of the substance.
- the size and volume of existing pores differ depending on the type of brush, manufacturing method and manufacturing conditions.
- the pores are present throughout the brush, and there are open pores that connect from the brush surface to the inside, and closed pores that are isolated inside the brush.
- the term “pore” simply means an open pore.
- the 7K-soluble lubricant is an aqueous solution
- the pores of the brush can be impregnated with the water-soluble lubricant while maintaining the molecular size.
- the 7j-soluble lubricant has a surface active effect, lowers the surface tension, and easily penetrates into fine pores by capillary action.
- the 7K soluble lubricant can impregnate the fine pores of the brush and evenly impregnate not only the surface of the brush but also the pores toward the interior.
- the water-soluble lubricant is uniformly impregnated in the brush pores, the water-soluble lubricant uniformly acts on the entire sliding surface with the rotating body for a long time, and the sliding is performed.
- the water-soluble lubricant is a substance soluble in water and having lubricating performance.
- Preferred water-soluble lubricants applicable to the electromechanical power brush of the present invention include polyethylene glycol or derivatives thereof, polyvinyl alcohol, and polybutyl. Pyrrolidone, zK-soluble silicone oil or a mixture thereof.
- Examples of the polyethylene glycol derivative include polyethylene glycol ester, polyethylene glycol ether and the like.
- water-soluble silicone oils are more preferable because of their high-temperature stability.
- the carbon brush for an electric machine of the present invention may be a fluorine-modified silicone oil instead of the water-soluble lubricant as a substance contained in the carbon brush for an electric machine.
- the content of the fluorine-modified silicone oil is preferably 0.2 to 3% by weight based on the brush base material.
- a power brush for an electric machine capable of imparting high efficiency to a motor, a long service life, a reduction in temperature, a reduction in sliding noise, and a reduction in commutator wear, thereby achieving the above object.
- Fluorine-modified silicone oil has a small surface tension with the brush surface and easily penetrates into fine pores by capillary action, so that it can be contained in the brush by impregnation. Therefore, the fluorine-modified silicone oil can impregnate the fine pores of the brush and evenly impregnate not only the pores on the surface of the brush but also the internal pores. As described above, since the fluorine-modified silicone oil is uniformly impregnated in the brush pores, the fluorine-modified silicone oil uniformly acts on the entire sliding surface with the rotating body for a long time. It is considered that the mechanical resistance on the sliding surface is reduced and good slidability is achieved, thereby improving the motor efficiency.
- the impregnation amount of the fluorine-modified silicone oil into the brush is less than 0.2% by weight, the effect of the fluorine-modified silicone oil will not be exhibited, and if it exceeds 3% by weight, the efficiency of the molybdenum will be reduced.
- the carbon brush for electric machines of the present invention may be configured to contain a 7K-soluble lubricant and a metal compound instead of the above substances as the substances contained in the power brush for electric machines.
- the content of the 7-soluble lubricant is 0.2 to 10% by weight based on the brush base material
- the content of the metal compound is 0.05 to 10% by weight based on the brush base material.
- the water-soluble lubricant and the metal compound are uniformly impregnated into the fine pores on the surface and inside of the brush similarly to the above configuration, so that the wear of the brush and the commutator is further reduced, and the temperature and the sliding are reduced. It is considered that the dynamic noise is reduced and the efficiency of the motor is further improved.
- the binder is made of a synthetic resin.
- Resin-bonded brushes in which such a binder is made of synthetic resin tend to have fine pores.
- water-soluble lubricants, fluorine-modified silicone oils, water-soluble lubricants and The above object is achieved by uniformly impregnating the metal compound.
- the binder may be a carbonized synthetic resin or a carbonized pitch.
- the synthetic resin include an epoxy resin, a phenol resin, a polyester resin, a butyl ester resin, a furan resin, a polyamide resin, a polyimide resin, and a mixture thereof.
- the pitch include coal-based pitch, petroleum-based pitch, and a mixture thereof.
- a carbon brush having a metal film with good electrical conductivity formed on at least a part of the surface of the carbon brush except for a surface in contact with a conductive rotating body of the power brush for an electric machine. Can be used.
- FIG. 1 is a perspective view showing a schematic configuration of a motor using a brush according to an embodiment of the present invention.
- FIG. 2 is a diagram showing a chemical structure of a water-soluble silicone oil according to an embodiment of the present invention.
- FIG. 3 is a diagram showing a chemical structure of a fluorine-modified silicone oil according to an embodiment of the present invention.
- FIG. 1 shows a schematic configuration of a camera using a brush according to an embodiment of the present invention.
- the rotating body 2 which is a commutator of the motor comes into contact with the lower surface 1a of the brush 1, and slides at that portion.
- the brush 1 has a base material made of an aggregate containing carbon as at least one component and a binder. This base material has pores as described above.
- a water-soluble lubricant, a fluorine-modified silicone oil, or a water-soluble lubricant and a metal compound are contained in the pores of the brush base material.
- the pores of the brush 1 may be, for example, a brush base material having a small pore radius of 1 ⁇ m or less in average pore radius determined by a mercury intrusion method.
- the base material of the brush 1 is a carbon-graphite brush called CG (Carb on Graphite) system, and an electric graphite material called EG (Electric Grahite) system.
- CG Carbon on Graphite
- EG Electric Grahite
- a resin-bonded brush is preferable.
- these aggregates and the binder are kneaded at an approximate mixing ratio of 100 to 40 parts by weight of the binder to 100 parts by weight of the aggregate.
- artificial graphite natural graphite, expanded graphite and the like can be used.
- artificial graphite in which the crystallinity of graphite is not so much developed, or a configuration in which natural graphite and artificial graphite are combined is preferable.
- a synthetic resin is used as the binder, and either a thermosetting synthetic resin or a thermoplastic synthetic resin may be used, or a mixture thereof may be used.
- Particularly preferred synthetic resins include epoxy resins, phenol resins, polyester resins, butyl ester resins, furan resins, polyamide resins, and polyimide resins.
- an appropriate amount of an organic solvent such as alcohols and acetone may be added as necessary.
- an additive such as a solid lubricant or a film conditioner may be added to a part of the aggregate.
- solid lubricants such as molybdenum disulfide and tungsten disulfide, and alumina
- the kneaded mass is pulverized to prepare powder for molding. Thereafter, the powder is formed into a brush base material shape. Then, the molded body is subjected to a heat treatment at a temperature at which the resin cures (generally, 100 to 300 ° C.), thereby curing the resin.
- brush 1 has a side surface 1 b and an upper surface except for the lower surface 1 a of the brush 1 at the stage of the brush base material.
- An electrically conductive metal film may be formed on the entire surface or a part of 1a. Nickel, copper and silver can be mentioned as the material of this film. The thickness of this film is generally 3 to 10
- the formation of the metal film can be performed by a known method such as electrolytic plating or electroless plating.
- FIG. 2 shows the structural formula of 7-soluble silicone.
- this water-soluble silicone oil one of the methyl groups bonded to the main chain composed of Si0 is replaced with a functional group in which an alkyl group and a polyalkylene oxide are linked. You.
- the average molecular weight of this silicone oil changes depending on the values of X and y (natural numbers) in FIG. 2, and the kinematic viscosity changes accordingly. In the present embodiment, those having a kinematic viscosity of 10 to 2000 mm 2 / s (20 ° C.) are preferable. In addition, the kinematic viscosity of 1 0 ⁇ 1 0 0 0 mm 2 / s It is more preferable to use a water-soluble silicone oil having a degree.
- aqueous solution of water-soluble silicone oil (silicone oil aqueous solution) shown in Fig. 2. Since the water-soluble silicone oil and water are easily mixed with each other, the silicone oil aqueous solution can be adjusted by a simple operation by hand-stirring with a stirring rod. The amount of the water-soluble silicone oil in the ⁇ solution is appropriately determined according to the desired impregnation rate, impregnation conditions, the type of the selected base material, and the like.
- the prepared aqueous silicone oil solution penetrates into the fine pores by capillary action and is evenly impregnated into the pores of the brush substrate. Therefore, the impregnation can be performed simply by immersing the brush substrate in a silicone oil aqueous solution.
- vacuum degassing or pressurizing operation known as a general impregnation method may be used in combination.
- the temperature of the silicone oil aqueous solution can be controlled at room temperature of about 20 to 30 ° C. If necessary, the impregnation may be performed at a high temperature such as 60 to 80 ° C.
- the immersion time is appropriately determined depending on conditions such as the viscosity of the silicone oil aqueous solution, the temperature, and the brush base material, and is, for example, about 10 to 60 minutes. 'After soaking the brush for a certain period of time, remove the brush and dry it at a temperature of 100 ° C or more to remove the water content of the silicone oil aqueous solution impregnated in the brush. When the weight of the brush reaches a constant weight by drying, it is considered that the removal of water has reached the end point, and drying is completed.
- the weight of the water-soluble silicone oil left on the brush substrate is the impregnated weight. In this embodiment, the weight of the impregnated water-soluble silicone oil is set to be 0.1 to 10% by weight based on the brush base material.
- the lead wire 3 and the like are appropriately attached to the brush impregnated with the water-soluble silicone oil as described above.
- Figure 3 shows the structural formula of the fluorine-modified silicone oil.
- this fluorine-modified silicone oil one of the methyl groups bonded to the main chain made of SiO is replaced by a functional group in which (CH 2 ) 2 and CF 3 are linked.
- the average molecular weight of this silicone oil changes depending on the value of X (natural number) in Fig. 3, and the kinematic viscosity changes accordingly.
- those having a kinematic viscosity of 10 to 2000 mmVs (20 ° C) are preferable.
- the fluorine-modified silicone oil has a small surface tension with the brush surface, penetrates into the fine pores by capillary action, and is uniformly impregnated into the pores of the brush base material. Therefore, the impregnation can be performed simply by immersing the brush substrate in a fluorine-modified silicone oil.
- vacuum degassing or pressurizing operation known as a general impregnation method may be used in combination.
- the temperature of the fluorine-modified silicone oil can be controlled at room temperature of about 20 to 30 ° C. If necessary, the impregnation may be performed at a high temperature such as 60 to 80 ° C.
- the immersion time may vary depending on the viscosity, temperature, brush base material, etc. of the fluorine-modified silicone oil. It can be decided, for example, about 10-60 minutes.
- the weight of the impregnated fluorine-modified silicone oil is set to be 0.2 to 3% by weight based on the brush substrate.
- the lead wire 3 and the like are appropriately attached to the brush impregnated with the fluorine-modified silicone oil in this manner.
- the metal compound is a metal compound soluble in water or an organic solvent, preferably a metal complex compound, and more preferably a chelate compound.
- the metal species of the metal compound is a metal belonging to Group 3 to 14 and 3 to 5 periods in the periodic table of the long-period element.
- the metal compound used in the present embodiment may be an ionic bond or a covalent bond, and may be an inorganic salt such as a sulfate, a nitrate, or a hydrochloride of the above metal species, an acetate of the above metal species, or Organic acid salts such as oxalates, benzoates and benzenesulfonates, and metal complex compounds and chelate compounds in which the above metal species is the central atom, are not particularly limited, and commercially available ones can be used. It is.
- the ligand of the complex compound or the chelate compound is an amine such as ethylenediamine (en), methylentriamine (dien), triethylenetetramine (trien), ethylenediaminetetraacetic acid (edta), pyridine (bpy), or terpyridine (terpy).
- amine such as ethylenediamine (en), methylentriamine (dien), triethylenetetramine (trien), ethylenediaminetetraacetic acid (edta), pyridine (bpy), or terpyridine (terpy).
- Compounds such as a ketone compound such as acetylaceton (acac) and an oxime compound such as dimethylglyoxime (dmg) are preferred.
- the mixture of the water-soluble lubricant and the metal compound preferably has a kinematic viscosity of 10 to 20000 mm 2 / s (20 ° C.). It is more preferable to use a mixture of a water-soluble lubricant having a kinematic viscosity of 10 to 1000 mm 2 / s and a metal compound.
- the mixture of the water-soluble lubricant and the metal compound also has a small surface tension, penetrates into the fine pores by capillary phenomenon, and is uniformly impregnated into the pores of the brush substrate.
- impregnation can be performed simply by immersing the brush substrate in a mixture of a water-soluble lubricant and a metal compound.
- vacuum degassing or pressurizing operation known as a general impregnation method may be used in combination.
- the mixture of the 7K-soluble lubricant and the metal compound can be impregnated at a room temperature of about 20 ° C. to 30 ° C., but more preferably at a high temperature of 401 ° C. to 60 ° C.
- the immersion time is appropriately determined according to the conditions such as the viscosity of the mixture of the 7-soluble lubricant and the metal compound, the temperature, and the brush base material, and is, for example, about 10 to 60 minutes.
- the weight of the mixture of the water-soluble lubricant and the metal compound left on the brush substrate is the impregnated weight.
- the content of the water-soluble lubricant is 0.2 to 10% by weight based on the brush base material
- the content of the metal compound is 0.05 to 10% by weight based on the brush base material.
- Artificial graphite powder (average particle diameter: 100 wm, ash content: 5% by weight or less) 100 parts by weight of epoxy resin is mixed with 100 parts by weight, and the artificial graphite powder and the resin are uniformly mixed. The mixture was kneaded at room temperature for a predetermined time (30 to 120 minutes).
- This kneaded material was pulverized to 40 mesh or less to obtain a molding powder for molding into a brush.
- This molding powder is molded into a brush shape (dimensions: .56 x 25 mm) using a mold, and then heat-treated at 150 ° C using a commercially available dryer to cure the resin.
- a brush shape dimensions: .56 x 25 mm
- This brush base material had a bulk density of 1.45 g / cm 3 and a resistivity of 700 ⁇ m.
- the cumulative pore volume of this brush substrate was 112 mm 3 / g, and the average pore radius was 0.76 ⁇ m.
- the porosity was determined by a mercury porosimetry (using MAP0120 and PO2000, manufactured by FI SONS International, a mercury porosimeter).
- the pores of the resin-bonded brush substrate produced as described above were impregnated with the water-soluble silicone oil having the chemical structure shown in FIG.
- the kinematic viscosity at 20 ° C. of the water-soluble silicone oil used was 100 mm 2 / s.
- a water-soluble silicone oil was dissolved in a predetermined amount of water to form a silicone oil aqueous solution, and the brush substrate was immersed in the aqueous solution for a predetermined time.
- a silicone oil solution with the silicone oil concentration adjusted to 1 to 80% by weight was produced.
- the time for immersing the brush base material in the aqueous silicone oil solution was set at the time when the weight increase was almost saturated.
- the immersion time was 15 to 30 minutes, depending on the concentration of the silicone oil.
- the temperature of the aqueous silicone oil solution was set to 60 ° C in each case.
- the brush base material is removed from the aqueous silicone oil solution, and the brush impregnated with the aqueous silicone oil solution is placed in a dryer maintained at 120 ° C, and only the water impregnated with the silicone oil is removed. Was removed by drying.
- impregnation ratio (weight 0/6) is obtained by displaying Pas one cent over a 1 0 0 a value obtained by dividing the weight of the increase due to impregnation by weight of the brush before impregnation.
- the brushes were first fitted with leads and then set on the test motor with a spring pressure of 35 kPa. Under certain conditions, the suction power P (W) was measured for each brush.
- the motor was supplied with about 100 W of electric power under a voltage of 100 V and 60 Hz. At this time, the rotation speed of the motor was about 3200 rpm.
- a copper film having a thickness of 10 / m was formed on the entire surface of the peripheral surface of the brush substrate produced in the present example except for a portion in contact with the rotating portion of the brush by a copper electroless plating.
- the same water-soluble silicone oil was impregnated into the brush substrate having the copper film formed thereon by the method described above (this embodiment).
- the water-soluble silicone oil impregnation rate of the brush base material with the copper film formed was about 10% lower than that of the brush without the copper film.
- the same impregnation rate as for a brush without a copper coating can be obtained by increasing the immersion time or changing the immersion temperature. Was completed.
- Such a brush contributes to the effect of the film of the electrically conductive metal on the brush surface, that is, the effect of suppressing the temperature rise of the brush and maintaining stable rectification for a long period of time. .
- Example 1 first, the brush base material prepared in Example 1 was impregnated with a fluorine-modified silicone oil having a chemical structure shown in FIG.
- the kinematic viscosity of the fluorine-modified silicone oil was 100 mm 2 / s.
- the impregnation with the fluorine-modified silicone oil was performed by immersing the brush base material in the fluorine-modified silicone oil for a certain period of time at a room temperature of 15 ° C. After that, the brush was taken out and the fluorine-modified silicone oil adhering to the brush surface was removed by wiping with a soft cloth.
- Fluorine-modified silicone oil by changing the time of dipping the brush base material, a brush of the same impregnation rate as in Example 1, i.e., impregnation ratio, respectively, 0.2 wt%, 1.2 wt 0/6, 2 Fluorine-modified silicone oil-impregnated brushes (4 types) were obtained at 7.7 wt% and 4.0 wt%.
- the impregnation rate was determined in the same manner as in Example 1.
- Table 2 shows the test results for ()).
- the brush base material prepared in Example 1 was impregnated with a mixture of a water-soluble silicone oil having a chemical structure shown in the figure and a metal complex compound Cu (edta).
- a water-soluble silicone oil having a chemical structure shown in the figure and a metal complex compound Cu (edta).
- the kinematic viscosity of the water-soluble silicone oil and the metal complex compound was 100 mm 2 / s.
- the impregnation of the water-soluble silicone oil and the metal compound was performed by immersing the brush substrate in the mixture at a liquid temperature of 50 ° C. for 15 minutes. Thereafter, after removing the brush base material from the mixture, the brush was placed in a drier maintained at 100 ° C. to remove the water impregnated with the water-soluble silicone oil and the metal compound.
- the brushes were first fitted with leads and then set on the test motor with a spring pressure of 41 kPa. Under certain conditions, the suction power P (W) was measured for each brush. In the morning, about 550 W of power was input under a voltage of 230 V and 60 Hz. At this time, the rotational speed of the motor was about 3400 rpm.
- the commutator wear per 100 hours was 0.304 to 08 (mm / 100h) for sample numbers (2) to (4) and (6) to (17). Dramatically reduced compared to 0.12 (mm / 100h) of the impregnated brush.
- the motor efficiency is required to be particularly high.
- the present invention can be used for such a motor.
- the life of the brush is long, the sliding noise can be reduced, and it is economically beneficial.
- the brush can be shortened, and the motor can be downsized.
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Abstract
Description
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04772954.6A EP1662640B1 (en) | 2003-09-04 | 2004-09-06 | Carbon brush for electrical machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-312561 | 2003-09-04 | ||
JP2003312561 | 2003-09-04 |
Publications (1)
Publication Number | Publication Date |
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WO2005025035A1 true WO2005025035A1 (ja) | 2005-03-17 |
Family
ID=34269741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/013272 WO2005025035A1 (ja) | 2003-09-04 | 2004-09-06 | 電気機械用カーボンブラシ |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1662640B1 (ja) |
KR (1) | KR101011999B1 (ja) |
CN (1) | CN100388600C (ja) |
WO (1) | WO2005025035A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5825705B2 (ja) * | 2010-03-26 | 2015-12-02 | 東洋炭素株式会社 | カーボンブラシ |
CN102468587B (zh) * | 2010-11-19 | 2013-11-27 | 苏州东豪碳素有限公司 | 一种豆浆机/榨汁机用串激交流电机电刷 |
CN102904144A (zh) * | 2012-10-26 | 2013-01-30 | 海门市通达碳业有限公司 | 一种无毒电刷的生产工艺 |
DE102013212062B4 (de) * | 2013-06-25 | 2017-05-11 | Pantrac Gmbh | Vorrichtung zur Ableitung von Erdungsströmen, insbesondere in Windkraftanlagen |
JP6267912B2 (ja) * | 2013-10-02 | 2018-01-24 | 東洋炭素株式会社 | 金属炭素質ブラシおよびその製造方法 |
CN105470778B (zh) * | 2014-09-03 | 2018-07-13 | 苏州东南碳制品有限公司 | 一种清洗机电机用电刷及其制备方法 |
DE102015205735A1 (de) * | 2015-03-30 | 2016-10-06 | Schunk Hoffmann Carbon Technology Ag | Verwendung eines Kohlenstoffverbundmaterials zur Herstellung von elektrischen Kontaktkörpern für eine Kraftstoffpumpe sowie Kontaktkörper |
CN106549283B (zh) * | 2016-10-28 | 2019-03-15 | 湖南大学 | 一种摩擦膜具有自我修复功能的树脂型电碳材料及其制备方法 |
CN116505341B (zh) * | 2023-05-10 | 2023-11-28 | 湖北东南佳新材料有限公司 | 一种耐磨碳刷材料及其制备方法 |
Citations (6)
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US2819989A (en) | 1956-06-26 | 1958-01-14 | Stackpole Carbon Co | Dynamoelectric brush |
US2859139A (en) * | 1954-12-07 | 1958-11-04 | Union Carbide Corp | Method of making a silica containing carbon brush and resulting article |
JPH05182733A (ja) * | 1991-12-27 | 1993-07-23 | Toutan Kako Kk | 電気機械用カーボンブラシ |
US6068926A (en) | 1993-09-09 | 2000-05-30 | Schunk Kohlenstofftechnik Gmbh | Carbon brush and process for impregnating same |
JP2002056944A (ja) | 2000-08-09 | 2002-02-22 | Totan Kako Kk | 電気機械用カーボンブラシ |
JP2004173486A (ja) * | 2002-10-28 | 2004-06-17 | Aisin Seiki Co Ltd | 黒鉛質ブラシおよび黒鉛質ブラシを備えたモータ |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE4204680C1 (en) * | 1992-02-17 | 1993-04-29 | Technisch Wissenschaftliche Gesellschaft Thiede Und Partner Mbh, O-1530 Teltow, De | Mfg. method for commutators and brushes for electric motors and machines - impregnating basic material with micro particles of powdered or granulated graphite and plastic mixture to reduce friction of brushes on commutator ring |
JP2003175469A (ja) | 2001-12-10 | 2003-06-24 | Fujitsu Amd Semiconductor Kk | コンディショニングディスク及びその製造方法、研磨装置 |
-
2004
- 2004-09-06 WO PCT/JP2004/013272 patent/WO2005025035A1/ja active Application Filing
- 2004-09-06 EP EP04772954.6A patent/EP1662640B1/en active Active
- 2004-09-06 KR KR1020057006764A patent/KR101011999B1/ko not_active IP Right Cessation
- 2004-09-06 CN CNB2004800011123A patent/CN100388600C/zh not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2859139A (en) * | 1954-12-07 | 1958-11-04 | Union Carbide Corp | Method of making a silica containing carbon brush and resulting article |
US2819989A (en) | 1956-06-26 | 1958-01-14 | Stackpole Carbon Co | Dynamoelectric brush |
JPH05182733A (ja) * | 1991-12-27 | 1993-07-23 | Toutan Kako Kk | 電気機械用カーボンブラシ |
US6068926A (en) | 1993-09-09 | 2000-05-30 | Schunk Kohlenstofftechnik Gmbh | Carbon brush and process for impregnating same |
JP2002056944A (ja) | 2000-08-09 | 2002-02-22 | Totan Kako Kk | 電気機械用カーボンブラシ |
JP2004173486A (ja) * | 2002-10-28 | 2004-06-17 | Aisin Seiki Co Ltd | 黒鉛質ブラシおよび黒鉛質ブラシを備えたモータ |
Non-Patent Citations (1)
Title |
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See also references of EP1662640A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1662640A4 (en) | 2006-12-27 |
EP1662640B1 (en) | 2016-08-24 |
CN1701487A (zh) | 2005-11-23 |
KR20060113346A (ko) | 2006-11-02 |
KR101011999B1 (ko) | 2011-01-31 |
CN100388600C (zh) | 2008-05-14 |
EP1662640A1 (en) | 2006-05-31 |
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