JPS6142500B2 - - Google Patents
Info
- Publication number
- JPS6142500B2 JPS6142500B2 JP11212879A JP11212879A JPS6142500B2 JP S6142500 B2 JPS6142500 B2 JP S6142500B2 JP 11212879 A JP11212879 A JP 11212879A JP 11212879 A JP11212879 A JP 11212879A JP S6142500 B2 JPS6142500 B2 JP S6142500B2
- Authority
- JP
- Japan
- Prior art keywords
- brush
- sliding contact
- rectifier diode
- plate spring
- attached
- 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.)
- Expired
Links
- 239000000945 filler Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000005219 brazing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
- H02K11/026—Suppressors associated with brushes, brush holders or their supports
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
Description
【発明の詳細な説明】
［技術分野］
本発明は、直流モーター、特に交流電源に接続
されモーター自体に直流変換手段である整流ダイ
オードを装備した直流モーターに関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a DC motor, and particularly to a DC motor connected to an AC power source and equipped with a rectifier diode serving as DC conversion means in the motor itself.
［背景技術］
従来のこの種の直流モーターは、第１図に示す
如く、プラスチツク成形品の刷子ホルダーハに貫
通固着された端子金具イと図外電源リード線との
間に整流ダイオードロを介挿接続していた。[Background Art] As shown in Fig. 1, in a conventional DC motor of this type, a rectifier diode wire is inserted between a terminal fitting I fixed through a brush holder made of a plastic molded product and a power supply lead wire (not shown). It was connected.
従つて、整流ダイオードの接続作業が面倒で、
しかも整流ダイオードの収容スペース確保のため
モーターが大型化するものであつた。また刷子の
整流子セグメント摺接部から整流ダイオードまで
の距離が長いため、逆サージ電圧（コイル等のイ
ンダクタンスに流れている電流を急激に切断した
場合、コイルが持つているエネルギー（−1/2）
Li2が原因で発生する大きな電位）の空中伝播が
多くて電波障害が大きくなり、さらに端子金具に
整流ダイオードを接続する際の半田付け工程にお
いて、刷子を構成している刷子板バネを固定した
刷子ホルダーの溶融変形を起こし易く、その場合
には刷子（刷子板バネ）の摺接位置が変動する等
の問題があつた。 Therefore, connecting the rectifier diodes is troublesome.
Moreover, the motor had to be larger in order to secure space for accommodating the rectifier diode. In addition, because the distance from the commutator segment sliding contact part of the brush to the rectifier diode is long, reverse surge voltage (if the current flowing through the inductance of the coil etc. is abruptly cut off), the energy of the coil (-1/2 )
There is a lot of air propagation of large electric potentials (generated by Li 2 ), which increases radio wave interference.Furthermore, during the soldering process when connecting rectifier diodes to terminal fittings, the brush plate springs that make up the brushes are fixed. The brush holder tends to be melted and deformed, and in that case, there are problems such as the sliding position of the brush (brush plate spring) changing.
［発明の目的］
本発明は、上記事由に鑑みてなしたもので、そ
の目的とするところは、整流ダイオードを装備し
てもモーターが大型化にならず、しかも刷子の摺
接位置が安定し、さらに逆サージ電圧による電波
障害が低減できる直流モーターの刷子を提供する
にある。[Object of the Invention] The present invention was made in view of the above reasons, and its purpose is to prevent the motor from becoming larger even when equipped with a rectifier diode, and to stabilize the sliding contact position of the brush. Another object of the present invention is to provide a brush for a DC motor that can reduce radio interference caused by reverse surge voltage.
［発明の開示］
本発明の直流モーターの刷子は、刷子板バネの
他端板面に、整流ダイオードと該整流ダイオード
を挟むように対向しかつ整流ダイオードの電極が
直列的に接続された２個の電極板と該両電極板間
に充填固化された絶縁性充填材よりなるダイオー
ドブロツクを取着し、さらに該刷子板バネに取着
されない側の電極板に摺接片を取着してその摺接
部を形成したことを特徴とし、これにより上記目
的を達成したものである。[Disclosure of the Invention] The brush of the DC motor of the present invention has a rectifier diode on the other end plate surface of the brush plate spring, and two electrodes of the rectifier diode are connected in series and are opposed to each other so as to sandwich the rectifier diode. A diode block made of a solidified insulating filler is attached between the electrode plate and both electrode plates, and a sliding contact piece is attached to the electrode plate on the side that is not attached to the brush plate spring. The present invention is characterized in that a sliding contact portion is formed, thereby achieving the above object.
（実施例）
以下、本発明の一実施例を第２図乃至第６図に
基づいて説明する。(Example) Hereinafter, an example of the present invention will be described based on FIGS. 2 to 6.
第２図は本発明の刷子を有する直流モーターの
模式図、第３図は刷子板バネの斜視図、第４図は
刷子板バネの他端板面にダイオードブロツクと摺
接片を取着した状態を示す斜視図、第５図は刷子
板バネと端子金具の分解斜視図、第６図は刷子要
部の縦断面図である。 Fig. 2 is a schematic diagram of a DC motor having a brush according to the present invention, Fig. 3 is a perspective view of a brush plate spring, and Fig. 4 is a diode block and a sliding contact piece attached to the other end plate surface of the brush plate spring. FIG. 5 is an exploded perspective view of the brush plate spring and terminal fitting, and FIG. 6 is a vertical cross-sectional view of the main part of the brush.
１は略円筒状をなした整流子セグメントで、そ
の周壁には３個の整流子スリツト２が形成されて
いる。 Reference numeral 1 denotes a commutator segment having a substantially cylindrical shape, and three commutator slits 2 are formed in the peripheral wall of the commutator segment.
３は肉薄の金属片で長板状に形成された刷子の
要部をなす刷子板バネで、一端が端子金具９に固
定され、他端に整流子セグメント１に摺接する摺
接部を有している。この摺接部は、刷子板バネ３
の他端板面に、整流ダイオード６と整流ダイオー
ド６を挟むように対向しかつ整流ダイオード６の
電極が直列的に接続された２個の電極板７，８と
両電極板７，８間に充填固化された絶縁性充填材
よりなるダイオードブロツク５を取着し、さらに
刷子板バネ３に取着されない側の電極板８の外表
面に摺接片３ｂを取着してなる。 Reference numeral 3 denotes a brush plate spring which is a main part of a brush formed in the shape of a long plate with a thin metal piece, and has one end fixed to the terminal fitting 9 and the other end having a sliding contact portion that comes into sliding contact with the commutator segment 1. ing. This sliding contact portion is connected to the brush plate spring 3.
On the other end plate surface, there are a rectifier diode 6 and two electrode plates 7, 8 that face each other so as to sandwich the rectifier diode 6, and the electrodes of the rectifier diode 6 are connected in series, and between both electrode plates 7, 8. A diode block 5 made of a filled and solidified insulating filler is attached, and a sliding contact piece 3b is attached to the outer surface of the electrode plate 8 on the side not attached to the brush plate spring 3.
かかる摺接部は、例えば次のようにして製造す
る。まず刷子板バネ３の他端側を折曲して長片３
ａ、短片３ｂ及び連結片３ｃからなるコ字状に形
成する。一方、ダイオードブロツク５は、電極板
７，８間に整流ダイオード６を直列的に接続した
後、電極板７，８の外表面間隔が長短片３ａ，３
ｂの内表面間隔と略同等となる状態にしておき、
電極板７，８間に絶縁性充填材を充填固化して形
成される。しかして、刷子板バネ３の長短片３
ａ，３ｂ間にダイオードブロツク５を嵌入して電
極板７を長片３ａに、電極板８を短片３ｂにそれ
ぞれ圧接させ、これら圧接部分をロウ付け等によ
り固着する。そして、連結片３ｃを切除するので
ある。その結果、刷子板バネ３の短片３ｂは実質
的に電極板８の外表面に取着されたこととなり、
その外表面が整流子セグメント１の表面に摺接す
る摺接片３ｂとなる。従つて、刷子板バネ３の短
片（摺接片）３ｂの外表面は貴金属によつて表面
処理されていることが望ましい。 Such a sliding contact portion is manufactured, for example, as follows. First, bend the other end of the brush plate spring 3 and
It is formed into a U-shape consisting of a short piece 3b and a connecting piece 3c. On the other hand, in the diode block 5, the rectifier diode 6 is connected in series between the electrode plates 7 and 8, and then the distance between the outer surfaces of the electrode plates 7 and 8 is set by long and short pieces 3a and 3.
Leave it in a state that is approximately equal to the inner surface spacing of b,
It is formed by filling and solidifying an insulating filler between the electrode plates 7 and 8. Therefore, the long and short pieces 3 of the brush plate spring 3
A diode block 5 is inserted between a and 3b, and the electrode plate 7 is pressed against the long piece 3a, and the electrode plate 8 is pressed against the short piece 3b, and these pressed parts are fixed by brazing or the like. Then, the connecting piece 3c is cut off. As a result, the short piece 3b of the brush plate spring 3 is substantially attached to the outer surface of the electrode plate 8,
The outer surface becomes a sliding contact piece 3b that comes into sliding contact with the surface of the commutator segment 1. Therefore, it is desirable that the outer surface of the short piece (sliding contact piece) 3b of the brush plate spring 3 be surface-treated with a noble metal.
このような製造方法によれば、刷子板バネの一
部を摺動接点に兼用させることができるので、刷
子の構造が簡単になり、コスト低減が図れる。 According to such a manufacturing method, a part of the brush plate spring can also be used as a sliding contact, so the structure of the brush can be simplified and costs can be reduced.
［発明の効果］
本発明に係る直流モーターの刷子は、刷子板バ
ネの他端板面に、整流ダイオードと該整流ダイオ
ードを挟むように対向しかつ整流ダイオードの電
極が直列的に接続された２個の電極板と該両電極
板間に充填固化された絶縁性充填材よりなるダイ
オードブロツクを取着し、さらに該刷板子板バネ
に取着されない側の電極板に摺接片を取着してそ
の摺接部を形成したから、整流ダイオードが絶縁
状態でモーターハウジング内にコンパクトに収容
でき、また整流ダイオードが予めダイオードブロ
ツクとして形成された後は半田付け工程がないの
で刷子ホルダーの溶融変形を起こしたり刷子の摺
接位置が変動することもなく、さらに刷子の整流
子セグメント摺接部から整流ダイオードまでの距
離が極めて短くなるので逆サージ電圧の空中伝播
が少なくなる等、整流ダイオードを装備してもモ
ーターが大型化にならず、しかも刷子の摺接位置
が安定し、さらに逆サージ電圧による電波障害が
低減できるものとなる。[Effects of the Invention] The brush of the DC motor according to the present invention includes a rectifier diode and two electrodes of the rectifier diode that are connected in series to the other end plate surface of the brush plate spring. A diode block made of a solidified insulating filler is attached between the two electrode plates, and a sliding contact piece is attached to the electrode plate on the side that is not attached to the plate spring. Since the sliding contact portion is formed using the brush holder, the rectifier diode can be compactly housed in the motor housing in an insulated state.Furthermore, since there is no soldering process after the rectifier diode has been formed as a diode block in advance, melting and deformation of the brush holder can be avoided. Equipped with a rectifier diode, the distance from the commutator segment sliding contact part of the brush to the rectifier diode is extremely short, reducing air propagation of reverse surge voltage. However, the motor does not become large in size, the sliding contact position of the brush is stabilized, and radio wave interference due to reverse surge voltage can be reduced.
第１図は、従来例を示す斜視図、第２図は、本
発明の刷子を有する直流モーターの模式図、第３
図は、刷子板バネの斜視図、第４図は、刷子板バ
ネの他端板面にダイオードブロツクと摺接片を取
着した状態を示す斜視図、第５図は、刷子板バネ
と端子金具の分解斜視図、第６図は、刷子要部の
縦断面図である。
１……整流子セグメント、２……整流子スリツ
ト、３……刷子板バネ、３ａ……摺接片、５……
ダイオードブロツク、６……整流ダイオード、
７，８……電極板、９……端子金具。
FIG. 1 is a perspective view showing a conventional example, FIG. 2 is a schematic diagram of a DC motor having a brush according to the present invention, and FIG.
The figure is a perspective view of the brush plate spring, FIG. 4 is a perspective view showing a state in which a diode block and a sliding contact piece are attached to the other end plate surface of the brush plate spring, and FIG. 5 is a perspective view of the brush plate spring and the terminal. FIG. 6, which is an exploded perspective view of the metal fittings, is a longitudinal sectional view of the main part of the brush. 1...Commutator segment, 2...Commutator slit, 3...Brush plate spring, 3a...Sliding contact piece, 5...
Diode block, 6... Rectifier diode,
7, 8... Electrode plate, 9... Terminal fitting.
Claims (1)
メントに摺接する摺接部を有した長板状の刷子板
バネからなる直流モーターの刷子であつて、前記
摺接部は、刷子板バネの他端板面に、整流ダイオ
ードと該整流ダイオードを挟むように対向しかつ
整流ダイオードの電極が直列的に接続された２個
の電極板と該両電極板間に充填固化された絶縁性
充填材よりなるダイオードブロツクを取着し、さ
らに該刷子板バネに取着されない側の電極板に摺
接片を取着してなる直流モーターの刷子。1. A brush for a DC motor consisting of a long plate-shaped brush plate spring having one end fixed to a terminal fitting and the other end having a sliding contact portion for slidingly contacting a commutator segment, the sliding portion being On the other end plate surface, a rectifier diode, two electrode plates facing each other so as to sandwich the rectifier diode, and the electrodes of the rectifier diode are connected in series, and an insulating filler filled and solidified between the two electrode plates. A brush for a DC motor, comprising a diode block attached thereto, and a sliding contact piece attached to the electrode plate on the side not attached to the brush plate spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11212879A JPS5638959A (en) | 1979-08-31 | 1979-08-31 | Brush for dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11212879A JPS5638959A (en) | 1979-08-31 | 1979-08-31 | Brush for dc motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5638959A JPS5638959A (en) | 1981-04-14 |
| JPS6142500B2 true JPS6142500B2 (en) | 1986-09-22 |
Family
ID=14578891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11212879A Granted JPS5638959A (en) | 1979-08-31 | 1979-08-31 | Brush for dc motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5638959A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3216511B2 (en) | 1995-12-05 | 2001-10-09 | 住友電装株式会社 | Plate fuse and method of manufacturing plate fuse |
| JP4105059B2 (en) * | 2003-08-06 | 2008-06-18 | 三菱電機株式会社 | Fuel pump |
-
1979
- 1979-08-31 JP JP11212879A patent/JPS5638959A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5638959A (en) | 1981-04-14 |
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