JPH01222641A - Metal graphite brush - Google Patents
Metal graphite brushInfo
- Publication number
- JPH01222641A JPH01222641A JP4527988A JP4527988A JPH01222641A JP H01222641 A JPH01222641 A JP H01222641A JP 4527988 A JP4527988 A JP 4527988A JP 4527988 A JP4527988 A JP 4527988A JP H01222641 A JPH01222641 A JP H01222641A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- brush
- electric brush
- coke
- content
- 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.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 title claims abstract description 15
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 13
- 239000010439 graphite Substances 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 11
- 239000000571 coke Substances 0.000 abstract description 11
- 229910021382 natural graphite Inorganic materials 0.000 abstract description 8
- 239000005011 phenolic resin Substances 0.000 abstract description 6
- 239000002966 varnish Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052982 molybdenum disulfide Inorganic materials 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000011300 coal pitch Substances 0.000 abstract description 3
- 230000001590 oxidative effect Effects 0.000 abstract description 3
- 239000011812 mixed powder Substances 0.000 description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 5
- 229920001568 phenolic resin Polymers 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 229910021383 artificial graphite Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000003502 gasoline Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011295 pitch Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の利用性り！ｆ］
この発明は、モーターや発電機等の回転電機に使用する
電刷子に関し、特に金属黒鉛質電刷子に関する。[Detailed description of the invention] [Usability of the invention! f] The present invention relates to an electric brush used in a rotating electric machine such as a motor or a generator, and particularly relates to a metal graphite electric brush.
［従来技術］
従来から高電圧の回転電機には炭素黒鉛質、電気黒鉛質
を用いた電刷子が使用されてきたが、自動車電装用モー
ターの如き低電圧のものには銅粉と天然黒鉛粉とから造
られるいイっゆる金属黒鉛質電刷子が使用されている。[Prior art] Electric brushes made of carbon graphite or electrographite have traditionally been used for high-voltage rotating electric machines, but copper powder and natural graphite powder are used for low-voltage brushes such as motors for automobile electrical equipment. All metal graphite electric brushes made from
金属黒鉛質電刷子は、電刷子が用いられるモーター等の
出力性能、耐久性能に応じて、金属含有量の異なったも
のが使用されている。高出力を要求されるものでは金属
含有量が６０〜９０重量％（以下％は重量％を現ず）、
高耐久性能を要求されるものでは１０〜５０％が普通で
ある。そして黒鉛粉としては、人造黒鉛粉よりも潤滑性
に優れた天然黒鉛粉が好んで用いられている。Metal-graphite electric brushes with different metal contents are used depending on the output performance and durability of the motor or the like in which the electric brush is used. For those that require high output, the metal content is 60 to 90% by weight (hereinafter, % does not represent weight %),
For products that require high durability, the ratio is usually 10 to 50%. Natural graphite powder, which has better lubricity than artificial graphite powder, is preferably used as the graphite powder.
これらの金属粉と黒鉛粉とから作られた電刷子は、整流
子」二を摺動する時、電刷子中の黒鉛が他の成分と共に
整流子表面に黒鉛皮膜を形成し、これが潤滑作用をする
ことで整流子や電刷子の磨耗を防いでいると、一般に考
えられている。When an electric brush made from these metal powders and graphite powder slides over a commutator, the graphite in the electric brush forms a graphite film on the surface of the commutator together with other components, and this has a lubricating effect. It is generally believed that this prevents commutator and electric brush wear.
しかしながらこれらの皮膜の形成状態は、用いたモータ
ー等の回転電機の電流値、整流子の周速、発熱状態、そ
の他の要因により変化する。そして皮膜が厚くなり過ぎ
る、あるいは皮膜にむらが生じる等の現象が生じると、
電刷子や整流子が著しく磨耗する。However, the state of formation of these films varies depending on the current value of the rotating electric machine such as the motor used, the circumferential speed of the commutator, the state of heat generation, and other factors. If the film becomes too thick or uneven, etc.,
The electric brush and commutator will wear out significantly.
従来から、これら電刷子や整流子の磨耗を防止し適度な
黒鉛皮膜を形成するために、二硫化モリブデン、二硫化
タングステン、硫化銅、硫化亜鉛等の金属硫化物潤滑剤
を添加ずろ、あるいはノリ力、アルミナ、鉄粉、マンガ
ン粉等の微粉末を添加し皮膜の厚さを調整するする、等
の試みがなされている。これらの試みは磨耗の防止に有
効であるが、その効果は十分なしのではない。Traditionally, metal sulfide lubricants such as molybdenum disulfide, tungsten disulfide, copper sulfide, zinc sulfide, etc. have been added to these electric brushes and commutators to prevent wear and to form a suitable graphite film. Attempts have been made to adjust the thickness of the coating by adding fine powder such as powder, alumina, iron powder, manganese powder, etc. Although these attempts are effective in preventing wear, they are not entirely effective.
［発明の目的］
この発明は、金属黒鉛質電刷子の耐久性の改善を１］的
とする。この発明は特に、カッリン等の液体燃料中に浸
漬して用いろ電刷子の耐久性の改善を目的とする。[Object of the Invention] The object of the present invention is 1) to improve the durability of a metal graphite electric brush. A particular object of the present invention is to improve the durability of filter brushes that are used by being immersed in liquid fuel such as Karin.
［発明の構成］
この発明は、金属黒鉛質電刷子に、２０メツシユパス（
最大粒径８４０７ｚｍ）以下の粒度のコークス粉を１〜
３０重量％含何さＵｏたことを特徴とする。[Structure of the Invention] This invention provides a metal graphite electric brush with 20 mesh passes (
Coke powder with a particle size of 8407 zm (maximum particle size) or less
It is characterized by containing 30% by weight of water.
このようにすると、電刷子の磨耗を抑制し、その耐久性
を高めることかできろ。特にこの発明の電刷子を、液体
燃料中に浸漬して用いると、電刷子、整流子双方の磨耗
を著しく抑制上ろことができろ。In this way, the wear of the electric brush can be suppressed and its durability can be increased. In particular, when the electric brush of the present invention is used while immersed in liquid fuel, wear of both the electric brush and the commutator can be significantly suppressed.
この発明に用いろ金属粉としては、主として銅粉を用い
るが、銀粉あるいは銅粉と銀粉との混合粉でも良い。金
属粉の使用量は用いろ回転電機の特性に応じて定め、例
えば自動車のスターターモーターの場合５０〜８０％が
、ブロワ−モーターの場合３０〜６０％が、ガソリン等
の燃料噴射ポンプ用モーターの場合５〜４０％が好まし
い。The metal powder used in this invention is mainly copper powder, but silver powder or a mixed powder of copper powder and silver powder may also be used. The amount of metal powder to be used is determined depending on the characteristics of the rotating electric machine. For example, 50 to 80% is used in the starter motor of an automobile, 30 to 60% is used in the case of a blower motor, and 30 to 60% is used in the case of a motor for a fuel injection pump such as gasoline. In this case, 5 to 40% is preferable.
この発明に用いる黒鉛粉は天然黒鉛粉が好ましいが、人
造黒鉛粉あるいは人造黒鉛粉と天然黒鉛粉との混合粉で
も良い。銅含有量が７０％以上の場合は、結合拐を用い
ず黒鉛粉をそのまま使用することもできる。しかし銅含
有量が少なく黒鉛粉が多い場合、電刷子の焼結性が低い
ため、フェノール樹脂ワニス等の合成樹脂結合材で黒鉛
粉の表面を処理して用いろことが好ましい。結合材は、
炭素換算で黒鉛粉の１〜３０％程度が好ましい。The graphite powder used in this invention is preferably natural graphite powder, but may also be artificial graphite powder or a mixed powder of artificial graphite powder and natural graphite powder. When the copper content is 70% or more, graphite powder can be used as it is without using bonding. However, when the copper content is low and the graphite powder is large, the sinterability of the electric brush is low, so it is preferable to treat the surface of the graphite powder with a synthetic resin binder such as phenolic resin varnish. The binding material is
It is preferably about 1 to 30% of the graphite powder in terms of carbon.
コークスとしては、石炭のガス化の際に得られるコーク
ス、石炭ピッチを乾留して得られるピッチ：ｔ−クス、
石４１（類の精製やクランキングの副産物である石４１
１コークス等がある。コークス粉は、例えばこれらのコ
ークスの粉砕により調製する。Examples of coke include coke obtained during coal gasification, pitch obtained by carbonizing coal pitch: t-coke,
Stone 41 (Stone 41, a byproduct of similar refining and cranking)
1 coke etc. Coke powder is prepared, for example, by grinding these cokes.
あるいは得られたコークス粉をピッチやタール等で処理
成形した後、１，０００〜１，２００°Ｃ程度て焼成し
、再度粉砕してコークス粉としても良い。Alternatively, the obtained coke powder may be treated and formed with pitch, tar, etc., then fired at about 1,000 to 1,200°C, and crushed again to form coke powder.
コークス粉の粒度は２０メツノコパス（最大粒径８４０
７１ｍ）以下とする。粒度を徂くすると、電刷子の組成
か不均一になりやすく、また整流子に条痕を生じやすい
。好ましい粒度は３２メソンユパス（粒径５００μｍ以
下）であり、特に好ましくｉｌｌ： Ｉ ＯＯメツツユ
パス（粒径１５０μｍ以下）とする。なお粒径１０μｍ
以下のコークス粉は耐磨耗性の改善効果に乏しく、コー
クス粉の粒径はＩＯμｍ以」二が好ましい。勿論コーク
ス粉中に粒径１０Ｉｔｍ以下のものが少量混合していて
も、耐磨耗性の改善効果を損なうものでない。The particle size of coke powder is 20 Metsunokopas (maximum particle size 840
71m) or less. If the particle size is too large, the composition of the electric brush tends to be non-uniform and the commutator tends to have streaks. The preferred particle size is 32 meson yupasu (particle size 500 μm or less), particularly preferably ill:IOO meson yupas (particle size 150 μm or less). Note that the particle size is 10 μm
The following coke powders have a poor effect of improving wear resistance, and the particle size of the coke powder is preferably IO μm or more. Of course, even if a small amount of coke powder with a particle size of 10 Itm or less is mixed in, the effect of improving wear resistance will not be impaired.
この発明では、電刷子中にその全量に対しコークス粉を
１〜３０％含有させる。コークス粉の含有量を１％以下
とすると、電刷子の耐久性はほと° んど向］−シない
。また３０％以上含有させろと、電刷子の抵抗率を高め
、かつ整流子の磨耗を増大さ口ろ、。In this invention, the electric brush contains 1 to 30% of coke powder based on the total amount thereof. When the content of coke powder is 1% or less, the durability of the electric brush is almost negligible. Also, if the content is 30% or more, the resistivity of the electric brush will increase and the wear of the commutator will increase.
電刷子の製造時に、コークス粉を、その含Ｔｕｆｔが１
〜３０％となるように銅粉等の金属粉や黒鉛粉と混合す
る。ここで好ましくは、黒鉛粉とコークス粉とを混合し
てフェノール樹脂ワニス等の合成樹脂結合材で処理し、
これを銅粉等の金属粉と混合するようにする。なお電刷
子には、これ以外に二硫化モリブデンや二硫化タングス
テン、カオリン、ノリ力等の公知の添加料を加えても良
い。During the manufacture of electric brushes, coke powder is used when its Tuft content is 1
It is mixed with metal powder such as copper powder and graphite powder so that the concentration is ~30%. Preferably, graphite powder and coke powder are mixed and treated with a synthetic resin binder such as phenolic resin varnish,
This is mixed with metal powder such as copper powder. In addition, known additives such as molybdenum disulfide, tungsten disulfide, kaolin, and glue may be added to the electric brush.
この発明では」二記の混合物を圧縮成形し電刷子形状と
するが、圧縮と同時７こリード線を取り（ｔ ＩＪるの
が好ましい。圧縮成形は、例えばメカニカルプレスや油
圧プレスで行えば良い。圧縮成形後の電刷子を焼成し、
電刷子を完成する。なお焼成は非酸化性雰囲気で行い、
焼成温度は例えば２００〜８００℃が好ましい。In this invention, the mixture described in "2" is compression molded to form an electric brush shape, but it is preferable to remove the 7 lead wires at the same time as compression. Compression molding may be performed using, for example, a mechanical press or a hydraulic press. .The electric brush after compression molding is fired,
Complete the electric brush. The firing is performed in a non-oxidizing atmosphere.
The firing temperature is preferably 200 to 800°C, for example.
［実施例１］
・ 銅粉６０％、フェノール樹脂ワニスで処理した天然
黒鉛粉３３％、１４５メツシコパスの石炭ピッチ系コー
クス粉（粒径１０５μｍ以Ｔ）５％、二硫化モリブデン
２％を混合し、電刷子形状に成形し、非酸化性雰囲気中
７００°Ｃで焼成してｉ（ｉ刷子としノコ。電刷子中の
コークス粉含有量は５２％であり）こ。[Example 1] - Mixed 60% copper powder, 33% natural graphite powder treated with phenolic resin varnish, 5% coal pitch-based coke powder (particle size 105 μm or more) of 145 mesh, and 2% molybdenum disulfide, It is formed into the shape of an electric brush and fired at 700°C in a non-oxidizing atmosphere.The coke powder content in the electric brush is 52%.
［実施例２〜４］
２４メツツユパスの石油コークス粉（粒径７００μｍ以
下）１００重量部にピッチ３０重量部を加え混練した後
に、金型に充填して圧縮成形を行った。この乙のを１，
０００℃に焼成した後粉砕し、３２メツンコパスのコー
クス粉（粒径５００μｍ以下）を得た。[Examples 2 to 4] After adding 30 parts by weight of pitch to 100 parts by weight of petroleum coke powder (particle size: 700 μm or less) of 24 Metsuyupasu and kneading, the mixture was filled into a mold and compression molded. This one is 1,
After firing at 000°C, the coke powder was crushed to obtain coke powder (particle size: 500 μm or less) of 32 meters.
銅粉６０％に、」二記のコークス粉をそれぞれ３％、５
％、８％、及び残部をフェノール樹脂ワニスて処理した
天然黒鉛粉とし、総量か１００％となるように混合粉を
作った。これらの混合粉を実施例Ｉと同様に成形焼成し
、実施例２〜４の電刷子を得た。60% copper powder, 3% coke powder and 5% coke powder respectively.
%, 8%, and the remainder were natural graphite powder treated with phenolic resin varnish, and a mixed powder was prepared so that the total amount was 100%. These mixed powders were shaped and fired in the same manner as in Example I to obtain electric brushes of Examples 2 to 4.
［比較例Ｉ］
コークス粉を使用しなかった他は、実施例１と全く同様
にして電刷子を得た。[Comparative Example I] An electric brush was obtained in exactly the same manner as in Example 1, except that coke powder was not used.
得られた電刷子を２．ＯＫＷの自動車用スターターモー
ターに組イ；１（づ、３，０００ｃｃのエンジンに取り
イ」けて、２秒駆動、２８秒休止を１ザイクルとし、Ｉ
Ｏ，０００ザイクル後の電刷子磨耗量を比較した。結
果を表１に示す。2. The obtained electric brush. Assemble it into an OKW automobile starter motor, install it into a 3,000cc engine, set it to one cycle of 2 seconds of operation, and 28 seconds of rest.
The amount of wear of the electric brush after 0,000 cycles was compared. The results are shown in Table 1.
［実施例５〜８］
銅粉２０％、実施例２で使用したものと同じコークス粉
をそれぞれ２％、８％、１５％、２８％添加し、それぞ
れフェノール樹脂ワニスで処理した天然黒鉛粉を加えて
総量が１００％となるように混合粉を作った。これらの
混合粉を、実施例１と同様の方法で、電刷子形状に成形
焼成して、実施例５〜８の電刷子を得た。電刷子中のコ
ークス粉含有量は、表２にようになった。[Examples 5 to 8] 20% copper powder, 2%, 8%, 15%, and 28% of the same coke powder used in Example 2 were added, respectively, and natural graphite powder was treated with phenolic resin varnish. In addition, a mixed powder was prepared so that the total amount was 100%. These mixed powders were molded into the shape of an electric brush and fired in the same manner as in Example 1 to obtain electric brushes of Examples 5 to 8. Table 2 shows the coke powder content in the electric brush.
［比較例２］
比較のために、コークス粉を使用しなかった他は実施例
５と全く同様にして、電刷子を得た。[Comparative Example 2] For comparison, an electric brush was obtained in exactly the same manner as in Example 5 except that no coke powder was used.
得られた電刷子を自動車用のガソリン噴射ポンプ用モー
ターに組付け、電刷子がガソリン中に浸漬された状態で
電刷子の磨耗テストを行った。テストはモーター電圧１
２Ｖ１電流４Ａとし、５００時間駆動後の電刷子と整流
子の磨耗歯を測定した。結果を表２に示す。The obtained electric brush was assembled into a motor for a gasoline injection pump for automobiles, and an abrasion test of the electric brush was conducted while the electric brush was immersed in gasoline. The test is motor voltage 1
The electric brush and commutator wear teeth were measured after driving for 500 hours at a 2V1 current of 4A. The results are shown in Table 2.
＝８−
［発明の効果］
表Ｉ１表２の結果等から明らかなように、この発明の電
刷子は磨耗が少なく耐久性に優れている。=8- [Effects of the Invention] As is clear from the results in Table I1 and Table 2, the electric brush of the present invention has less wear and is excellent in durability.
特にカッリン等の液体燃１″４中に浸漬して用いる場合
、電刷子、整流子共に苫しく磨耗を小さく４−ることか
できる。In particular, when used by being immersed in a liquid fuel such as Kallin, both the electric brush and the commutator can be used with less wear and tear.
Claims (1)
子において、２０メッシュパス以下の粒度のコークス粉
を電刷子の全量に対して１〜３０重量％含有させたこと
を特徴とする、金属黒鉛質電刷子。(1) A metal-graphite electric brush made by mixing and molding metal powder and graphite powder, characterized by containing 1 to 30% by weight of coke powder with a particle size of 20 mesh passes or less based on the total amount of the electric brush. , metal graphite electric brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4527988A JPH01222641A (en) | 1988-02-27 | 1988-02-27 | Metal graphite brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4527988A JPH01222641A (en) | 1988-02-27 | 1988-02-27 | Metal graphite brush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01222641A true JPH01222641A (en) | 1989-09-05 |
| JPH0474939B2 JPH0474939B2 (en) | 1992-11-27 |
Family
ID=12714871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4527988A Granted JPH01222641A (en) | 1988-02-27 | 1988-02-27 | Metal graphite brush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01222641A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7148602B2 (en) | 2003-11-07 | 2006-12-12 | Totankako Co., Ltd. | Commutator |
| JP2007060861A (en) * | 2005-08-26 | 2007-03-08 | Sanyo Denki Co Ltd | Rotating electric machine with brush and manufacturing method therefor |
| JP2019176593A (en) * | 2018-03-28 | 2019-10-10 | 株式会社デンソー | Starter and method for forming graphite film on commutator surface |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50122611A (en) * | 1974-03-18 | 1975-09-26 |
-
1988
- 1988-02-27 JP JP4527988A patent/JPH01222641A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50122611A (en) * | 1974-03-18 | 1975-09-26 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7148602B2 (en) | 2003-11-07 | 2006-12-12 | Totankako Co., Ltd. | Commutator |
| JP2007060861A (en) * | 2005-08-26 | 2007-03-08 | Sanyo Denki Co Ltd | Rotating electric machine with brush and manufacturing method therefor |
| JP4708123B2 (en) * | 2005-08-26 | 2011-06-22 | 山洋電気株式会社 | Brushed rotating electrical machine and method for manufacturing the same |
| JP2019176593A (en) * | 2018-03-28 | 2019-10-10 | 株式会社デンソー | Starter and method for forming graphite film on commutator surface |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0474939B2 (en) | 1992-11-27 |
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