JP2002315269A - Carbon brush - Google Patents
Carbon brushInfo
- Publication number
- JP2002315269A JP2002315269A JP2001115991A JP2001115991A JP2002315269A JP 2002315269 A JP2002315269 A JP 2002315269A JP 2001115991 A JP2001115991 A JP 2001115991A JP 2001115991 A JP2001115991 A JP 2001115991A JP 2002315269 A JP2002315269 A JP 2002315269A
- Authority
- JP
- Japan
- Prior art keywords
- brush
- pigtail
- fitting
- carbon brush
- protruding part
- 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
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 3
- 150000001721 carbon Chemical class 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 102100029777 Eukaryotic translation initiation factor 3 subunit M Human genes 0.000 description 1
- 102100036738 Guanine nucleotide-binding protein subunit alpha-11 Human genes 0.000 description 1
- 101001012700 Homo sapiens Eukaryotic translation initiation factor 3 subunit M Proteins 0.000 description 1
- 101100283445 Homo sapiens GNA11 gene Proteins 0.000 description 1
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電動工具の整流子
モータ等に用いられるカーボンブラシの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a carbon brush used for a commutator motor of an electric tool.
【０００２】[0002]
【従来の技術】図２に従来のカーボンブラシを示す。カ
ーボンブラシ２０は、一端をブラシ本体２１の端面に接
続したピッグテール２２を、ブラシ本体２１とコ字状の
ブラシ金具２３との間に配されるコイルバネ２４を貫通
させてブラシ金具２３に連結する構造が知られている。
ピッグテール２２とブラシ金具２３との連結は、ブラシ
金具２３に設けたスリット２５を通してピッグテール２
２の他端をブラシ金具２３の裏面側へ回り込ませて、ブ
ラシ金具２３の中央でコイルバネ２４の端部の嵌着用に
突設された凸部２６の裏面でスポット溶接する形態が一
般的である。2. Description of the Related Art FIG. 2 shows a conventional carbon brush. The carbon brush 20 has a structure in which a pigtail 22 having one end connected to the end face of the brush body 21 is connected to the brush fitting 23 by penetrating a coil spring 24 disposed between the brush body 21 and the U-shaped brush fitting 23. It has been known.
The pigtail 22 is connected to the brush fitting 23 through a slit 25 provided in the brush fitting 23.
In general, the other end of 2 is wound around the back side of the brush fitting 23, and spot welding is performed at the center of the brush fitting 23 on the back face of the projection 26 protruding from the end of the coil spring 24. .
【０００３】[0003]
【発明が解決しようとする課題】上記カーボンブラシ２
０においては、ピッグテール２２におけるスポット溶接
の端部で応力集中が生じやすく、特に電動工具がインパ
クトレンチ等使用時に振動を発生するものであると、応
力集中により当該端部で断線を起こすおそれがあった。The above-mentioned carbon brush 2
In the case of 0, stress concentration is likely to occur at the end of the spot weld in the pigtail 22, and particularly when the power tool generates vibration when using an impact wrench or the like, there is a possibility that the stress concentration may cause disconnection at the end. Was.
【０００４】そこで、請求項１に記載の発明は、ピッグ
テールの断線を効果的に防止でき、耐久性に優れたカー
ボンブラシを提供することを目的としたものである。Accordingly, an object of the present invention is to provide a carbon brush which can effectively prevent the pigtail from breaking and has excellent durability.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、請求項１に記載の発明は、ブラシ金具における所定
箇所の周囲に、ピッグテールの他端が貫通可能な一対の
貫通部を設けて、ピッグテールの他端を貫通部を利用し
てブラシ金具を巻回させてから所定箇所に連結したこと
を特徴とするものである。In order to achieve the above object, according to the first aspect of the present invention, a pair of penetrating portions through which the other end of the pig tail can penetrate is provided around a predetermined portion of the brush fitting. The other end of the pigtail is connected to a predetermined portion after winding a brush fitting using a penetrating portion.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図１は、カーボンブラシの説明図
で、カーボンブラシ１は、角軸状のブラシ本体２の一端
面に銅線製のピッグテール３の一端を接続し、ピッグテ
ール３の他端４を、ブラシ本体２とブラシ金具５との間
に介在されたコイルバネ６を貫通させてブラシ金具５に
連結してなる。このブラシ金具５は、長辺方向の左右の
側縁に、ブラシ本体２の側面に沿って一対の腕部７，７
を折曲形成した金属製で、中央には、コイルバネ６の基
端が嵌着される凸部８が形成され、凸部８を挟んで長辺
方向の一方側にスリット９が、他方側に透孔１０が夫々
形成されている。ここでピッグテール３の他端４は、ス
リット９を通してブラシ金具５の凸部８の裏側を回り込
み、透孔１０を通して再び凸部８側へ引き出されて、凸
部８の表面でスポット溶接されている。即ち、ピッグテ
ール３の他端４をスリット９と透孔１０とを利用してブ
ラシ金具５に一周巻回させたものである。尚、実際の製
造工程においては、ピッグテール３の他端４が、透孔１
０を通して凸部８側へ引き出されて、凸部８の表面でス
ポット溶接された後、カーボンブラシ１がスリット９を
通して凸部８側へ導かれる。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view of a carbon brush. In the carbon brush 1, one end of a copper wire pigtail 3 is connected to one end surface of a square shaft-shaped brush body 2, and the other end 4 of the pigtail 3 is connected to the brush body 2 A coil spring 6 interposed between the brush fitting 5 and the brush fitting 5 is penetrated and connected to the brush fitting 5. The brush fitting 5 has a pair of arms 7, 7 on the left and right side edges in the long side direction along the side surface of the brush body 2.
Is formed in a bent shape, and a convex portion 8 is formed at the center to which the base end of the coil spring 6 is fitted. A slit 9 is formed on one side in the long side direction with the convex portion 8 interposed therebetween, and a slit 9 is formed on the other side. Each of the through holes 10 is formed. Here, the other end 4 of the pigtail 3 goes around the back side of the protrusion 8 of the brush fitting 5 through the slit 9, is drawn out to the protrusion 8 side again through the through hole 10, and is spot-welded on the surface of the protrusion 8. . That is, the other end 4 of the pigtail 3 is wound around the brush fitting 5 by using the slit 9 and the through hole 10. In the actual manufacturing process, the other end 4 of the pigtail 3 is
The carbon brush 1 is drawn out toward the convex portion 8 through the hole 0 and spot-welded on the surface of the convex portion 8.
【０００７】以上の如く構成されたカーボンブラシ１に
おいては、ピッグテール３の他端４がブラシ金具５に巻
回してからスポット溶接される格好となっているため、
当該溶接部分からブラシ金具５を離れるまでに余裕が生
じ、当該溶接部分での応力集中の発生を効果的に防止可
能となる。従って、インパクトレンチ等の打撃工具の整
流子モータに上記カーボンブラシ１を用いても、ピッグ
テール３の断線のおそれはなくなり、耐久性に優れる。In the carbon brush 1 configured as described above, the other end 4 of the pigtail 3 is wound around the brush fitting 5 and then spot welded.
There is a margin until the brush fitting 5 is separated from the welded portion, and it is possible to effectively prevent the occurrence of stress concentration at the welded portion. Therefore, even if the carbon brush 1 is used for a commutator motor of a striking tool such as an impact wrench, there is no risk of the pigtail 3 being disconnected, and the durability is excellent.
【０００８】尚、上記形態では、ピッグテールの他端を
巻回させるための貫通部として、凸部８を挟んでスリッ
ト９と透孔１０とを設けているが、どちらもスリットと
しても良いし、逆にどちらも透孔としても良い。但し、
どちらもスリットであると、ブラシ金具の強度に影響を
与えるおそれがあり、どちらも透孔であると製造が困難
となるため、本形態のようなスリットと透孔との組み合
わせが望ましい。又、上記形態では、ピッグテールの他
端をブラシ金具に一周だけ巻回させているが、ブラシ金
具の貫通部に余裕があれば、一周半や二周以上巻回させ
てからブラシ金具の表面又は裏面にスポット溶接等する
ことも可能である。In the above-described embodiment, the slit 9 and the through hole 10 are provided as the penetrating portion for winding the other end of the pigtail with the convex portion 8 interposed therebetween. Conversely, both may be through holes. However,
If both are slits, the strength of the brush fitting may be affected, and if both are through holes, it becomes difficult to manufacture. Therefore, a combination of slits and through holes as in this embodiment is desirable. Also, in the above embodiment, the other end of the pigtail is wound around the brush fitting only once, but if there is room in the penetrating portion of the brush fitting, it is wound one and a half or two or more turns before the surface of the brush fitting or Spot welding or the like can be performed on the back surface.
【０００９】[0009]
【発明の効果】請求項１に記載の発明によれば、ブラシ
金具に設けた貫通部を利用して、ピッグテールの他端を
ブラシ金具に巻回させてから所定箇所に連結する構成と
したことで、所定箇所からブラシ金具を離れるまでに余
裕が生じ、応力集中の発生を効果的に防止可能となる。
従って、インパクトレンチ等の打撃工具の整流子モータ
に用いても、ピッグテールの断線のおそれはなくなり、
耐久性に優れる。According to the first aspect of the present invention, the other end of the pigtail is wound around the brush fitting by using the penetrating portion provided in the brush fitting, and then connected to a predetermined location. Therefore, there is a margin until the brush fitting is separated from the predetermined location, and it is possible to effectively prevent the occurrence of stress concentration.
Therefore, even if it is used for a commutator motor of a hitting tool such as an impact wrench, there is no risk of the pigtail being disconnected,
Excellent durability.
【図１】（Ａ）カーボンブラシの平面図である。 （Ｂ）カーボンブラシの正面図である。 （Ｃ）カーボンブラシの右側面図である。FIG. 1A is a plan view of a carbon brush. (B) It is a front view of a carbon brush. (C) It is a right view of a carbon brush.
【図２】（Ａ）従来のカーボンブラシの平面図である。 （Ｂ）従来のカーボンブラシの正面図である。 （Ｃ）従来のカーボンブラシの右側面図である。FIG. 2A is a plan view of a conventional carbon brush. (B) It is a front view of the conventional carbon brush. (C) It is a right view of the conventional carbon brush.
【符号の説明】 １・・カーボンブラシ、２・・ブラシ本体、３・・ピッ
グテール、４・・他端、５・・ブラシ金具、６・・コイ
ルバネ、８・・凸部、９・・スリット、１０・・透孔。[Description of Signs] 1. Carbon brush, 2. Brush body, 3. Pigtail, 4. Other end, 5. Brush fitting, 6, Coil spring, 8, Convex part, 9, Slit, 10 ... through holes.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H613 AA03 BB04 BB27 GA11 GA17 GB01 GB08 GB09 GB12 GB13 KK05 KK07 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H613 AA03 BB04 BB27 GA11 GA17 GB01 GB08 GB09 GB12 GB13 KK05 KK07
Claims (1)
ルの他端をブラシ金具の所定箇所に連結させたカーボン
ブラシであって、 前記ブラシ金具における前記所定箇所の周囲に、前記ピ
ッグテールの他端が貫通可能な一対の貫通部を設けて、
前記ピッグテールの他端を前記貫通部を利用して前記ブ
ラシ金具を巻回させてから前記所定箇所に連結したこと
を特徴とするカーボンブラシ。1. A carbon brush having one end connected to a brush body and the other end of a pigtail connected to a predetermined portion of a brush fitting, wherein the other end of the pigtail penetrates around the predetermined portion of the brush fitting. By providing a pair of possible penetrations,
The other end of the pigtail is wound around the brush fitting using the penetrating portion, and then connected to the predetermined location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001115991A JP2002315269A (en) | 2001-04-13 | 2001-04-13 | Carbon brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001115991A JP2002315269A (en) | 2001-04-13 | 2001-04-13 | Carbon brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002315269A true JP2002315269A (en) | 2002-10-25 |
Family
ID=18966798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001115991A Pending JP2002315269A (en) | 2001-04-13 | 2001-04-13 | Carbon brush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002315269A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384029C (en) * | 2003-09-25 | 2008-04-23 | 乐金电子(天津)电器有限公司 | Lead connection structure of brush assembly for motor |
| JP2008125202A (en) * | 2006-11-10 | 2008-05-29 | Hitachi Appliances Inc | Commutator motor brush device and vacuum cleaner |
| KR100942754B1 (en) | 2008-05-15 | 2010-02-18 | 코리아시스템 주식회사 | Assembly device of carbon brush assembly |
| CN114131559A (en) * | 2021-12-20 | 2022-03-04 | 苏州赛腾菱欧智能科技有限公司 | Carbon brush rotating press-in device |
-
2001
- 2001-04-13 JP JP2001115991A patent/JP2002315269A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384029C (en) * | 2003-09-25 | 2008-04-23 | 乐金电子(天津)电器有限公司 | Lead connection structure of brush assembly for motor |
| JP2008125202A (en) * | 2006-11-10 | 2008-05-29 | Hitachi Appliances Inc | Commutator motor brush device and vacuum cleaner |
| KR100942754B1 (en) | 2008-05-15 | 2010-02-18 | 코리아시스템 주식회사 | Assembly device of carbon brush assembly |
| CN114131559A (en) * | 2021-12-20 | 2022-03-04 | 苏州赛腾菱欧智能科技有限公司 | Carbon brush rotating press-in device |
| CN114131559B (en) * | 2021-12-20 | 2024-03-19 | 苏州赛腾菱欧智能科技有限公司 | Carbon brush rotary pressing device |
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