JPS6112464B2 - - Google Patents
Info
- Publication number
- JPS6112464B2 JPS6112464B2 JP56116988A JP11698881A JPS6112464B2 JP S6112464 B2 JPS6112464 B2 JP S6112464B2 JP 56116988 A JP56116988 A JP 56116988A JP 11698881 A JP11698881 A JP 11698881A JP S6112464 B2 JPS6112464 B2 JP S6112464B2
- Authority
- JP
- Japan
- Prior art keywords
- bracket
- plate
- terminal
- end bracket
- brush
- 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
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 8
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- 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
- H02K11/40—Structural association with grounding devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Current Collectors (AREA)
Description
【発明の詳細な説明】
本発明は、小型直流モータのブラケツトに関す
るもので、刷子が接続される端子板、磁性体金属
板よりなるブラケツト板を合成樹脂による一体成
形品にて構成し、かつ、端子板とブラケツト板と
を確実に接触させ、ブラケツト組立精度および電
気雑音性能の向上、ならびにコスト低減を図つた
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bracket for a small DC motor, in which a terminal plate to which a brush is connected and a bracket plate made of a magnetic metal plate are integrally molded from synthetic resin, and The terminal board and the bracket board are brought into reliable contact with each other to improve bracket assembly accuracy and electrical noise performance, and to reduce costs.
従来の小型直流モータのブラケツトは、第１図
に示す如く、数種類の部品を伴なう複合組立より
成つている。すなわち、鉄板よりなるブラケツト
金具１の中央凹所２に、回転軸を受けるための樹
脂製のスラスト板３および軸受４を挿入し、刷子
５および刷子用端子板６が取付けられる絶縁板７
に一体に設けられた板バネ部８とブラケツト３と
の間で軸受４を挾持し、かつ刷子５，刷子用端子
板６および絶縁板７をビス９にてブラケツト３に
固定している。また、刷子５を通して流れる逆起
電力をアースするため、絶縁板７およびブラケツ
ト金具１を貫通する端子板６の端子部１０を矢印
Ａ方向に屈曲させてブラケツト金具１に接触さ
せ、電気的溶接にてブラケツト金具１に固着して
いる。 A conventional small DC motor bracket consists of a composite assembly involving several types of parts, as shown in FIG. That is, a thrust plate 3 made of resin and a bearing 4 for receiving a rotating shaft are inserted into a central recess 2 of a metal bracket 1 made of an iron plate, and an insulating plate 7 to which a brush 5 and a terminal plate 6 for the brush are attached is inserted.
The bearing 4 is held between the bracket 3 and a leaf spring portion 8 integrally provided with the brush 5, the brush terminal plate 6, and the insulating plate 7 are fixed to the bracket 3 with screws 9. In addition, in order to ground the back electromotive force flowing through the brush 5, the terminal portion 10 of the terminal plate 6, which passes through the insulating plate 7 and the bracket metal fitting 1, is bent in the direction of arrow A and brought into contact with the bracket metal fitting 1, so that it can be electrically welded. It is firmly fixed to the bracket metal fitting 1.
第３図は端子板６をアースしない場合と、アー
スした場合の電気雑音レベルを示すもので、ａは
アースしない場合で、そのパルス電圧はピーク用
で5Vに達するが、アースした場合は、2Vで抑え
られ、半減以上の効果を有する。 Figure 3 shows the electrical noise level when the terminal board 6 is not grounded and when it is grounded.A is the case where the terminal board 6 is not grounded, and the pulse voltage reaches 5V at the peak, but when it is grounded, it reaches 2V. The effect is more than halved.
従来のこのアースは、前述の通り、電気的溶接
によつて行つているが、電気的溶接にも溶接強度
のバラツキが考えられる。その電気的導通性は、
ネジ，ハトメより効果的であるが、完壁ではな
い。特に、電気雑音の防止には、安定した導通性
を必要とするため、電気的溶接のバラツキは、電
気雑音特性のバラツキにもなつていた。また、バ
ラツキがあるため、電気的溶接作業は難しく、作
業能率も非常に悪くなつていた。 Conventionally, this grounding is performed by electrical welding, as described above, but even with electrical welding, variations in welding strength can be considered. Its electrical conductivity is
It is more effective than screws and grommets, but it is not perfect. In particular, since stable conductivity is required to prevent electrical noise, variations in electrical welding also lead to variations in electrical noise characteristics. Furthermore, due to the variations, electrical welding work was difficult and work efficiency was extremely low.
本発明は上記従来の欠点に鑑みてなされたもの
で、以下本発明の一実施例を第３図を参照して説
明する。図において、１１は合成樹脂製の円板状
エンドブラケツトで、中央部に軸受１２を収納す
る凹部１３を形成し、この凹部１３に複数個の突
起１４を一体に成形して軸受保持部を構成してい
る。１５はエンドブラケツト１１と一体に樹脂モ
ールド成形される磁性体金属板よりなるリング状
のブラケツト板で、内外周端が露出し、その他は
エンドブラケツト中に埋設されている。１６はエ
ンドブラケツト１１と一体に樹脂モールド成形さ
れる刷子用端子板で、その上面が露出する如くエ
ンドブラケツト１１の表面に固着されている。１
７はエンドブラケツト１１を貫通する刷子用端子
板１６の端子部で、エンドブラケツト中に位置す
る部分にブラケツト板１５に設けた貫通孔１８に
圧接する膨出部１９が一体に設けられている。こ
の際、圧入しろは20〜100μが適当であり、樹脂
モールドした後は、端子部付の移動することもな
く、常に良好な状態で端子部付とブラケツト板１
５が接触することになる。なお、刷子２０は刷子
用端子板上に位置規制された状態で設置され、ス
ポツト溶接などにより刷子用端子板１６に電気
的，機械的に取付けられる。また、軸受１２は、
エンドブラケツト１１に凹部１２に挿入するだけ
で、突起１４の弾性によりエンドブラケツト１１
に保持される。 The present invention has been made in view of the above-mentioned conventional drawbacks, and one embodiment of the present invention will be described below with reference to FIG. 3. In the figure, reference numeral 11 denotes a disk-shaped end bracket made of synthetic resin, which has a recess 13 in the center for housing the bearing 12, and a plurality of protrusions 14 are integrally molded into the recess 13 to form a bearing holding part. are doing. Reference numeral 15 designates a ring-shaped bracket plate made of a magnetic metal plate which is resin-molded integrally with the end bracket 11, with its inner and outer peripheral edges exposed and the rest buried in the end bracket. Reference numeral 16 designates a brush terminal plate which is integrally formed with the end bracket 11 by resin molding, and is fixed to the surface of the end bracket 11 so that its upper surface is exposed. 1
Reference numeral 7 denotes a terminal portion of the brush terminal plate 16 that passes through the end bracket 11, and a bulging portion 19 that presses against a through hole 18 provided in the bracket plate 15 is integrally provided in a portion located in the end bracket. At this time, the appropriate press-fitting clearance is 20 to 100μ, and after resin molding, the terminal and bracket plate 1 are always in good condition without any movement.
5 will be in contact. The brush 20 is placed on the brush terminal plate in a regulated manner, and is electrically and mechanically attached to the brush terminal plate 16 by spot welding or the like. Moreover, the bearing 12 is
By simply inserting the end bracket 11 into the recess 12, the end bracket 11
is maintained.
以上の構成によれば、従来のスラスト板３、絶
縁板７も、樹脂により同時加工してしまうため、
その必要がなく、ブラケツト組立として組み合わ
せる部品はエンドブラケツト１１と軸受１２，刷
子２０の３種類となり、ブラケツト組立精度は著
しく向上し、かつブラケツトの組立工数が低減す
る。また、電気的溶接を用いることなく端子板１
６の端子部１７とブラケツト板１５との安定した
接触を確保でき、端子板１６がブラケツト板１５
にて確実にアースされるため、電気雑音性能の向
上も図れる。 According to the above configuration, since the conventional thrust plate 3 and insulating plate 7 are also processed with resin at the same time,
This is not necessary, and there are only three types of parts to be assembled in the bracket assembly: the end bracket 11, the bearing 12, and the brush 20, and the bracket assembly accuracy is significantly improved and the number of steps required for assembling the bracket is reduced. In addition, the terminal plate 1 can be connected without using electrical welding.
It is possible to ensure stable contact between the terminal portion 17 of 6 and the bracket plate 15, and the terminal plate 16 is connected to the bracket plate 15.
Since it is reliably grounded at the terminal, electrical noise performance can also be improved.
以上の説明から明らかなように本発明によれ
ば、ブラケツト板、端子板がエンドブラケツトと
一体成形されるため、部品の組立精度が向上し、
良好な整流作用が得られると共に、組立も簡単に
なり、コスト低減も図ることができる。また、ブ
ラケツト板に端子板をアース接続させるので、電
気雑音性能が向上するとともに、この接続に電気
的溶接等を用いる必要がなく、しかも、エンドブ
ラケツトにて端子板の端子部が保持され、ブラケ
ツト板との接触が常時安定したものとなるなどの
効果を奏する。 As is clear from the above description, according to the present invention, since the bracket plate and the terminal plate are integrally molded with the end bracket, the accuracy of assembling the parts is improved.
Not only can a good rectifying effect be obtained, but assembly is also simplified and costs can be reduced. In addition, since the terminal board is grounded to the bracket board, electrical noise performance is improved and there is no need to use electrical welding for this connection.Moreover, the terminal part of the terminal board is held by the end bracket, and the bracket The effect is that the contact with the plate is always stable.
第１図ａは従来の小型直流モータのブラケツト
組立の断面図、第１図ｂは同要部の拡大断面図、
第２図ａは本発明の一実施例にかかるブラケツト
組立の断面図、第２図ｂは同要部の拡大断面図、
第３図ａ，ｂは刷子用端子板のアースの有無によ
る電気雑音のレベルを比較して示す波形図であ
る。
１１……エンドブラケツト、１２……軸受、１
３……凹部、１５……ブラケツト板、１６……端
子板、１７……端子部、１８……貫通孔、１９…
…膨出部、２０……刷子。
Figure 1a is a sectional view of the bracket assembly of a conventional small DC motor, Figure 1b is an enlarged sectional view of the same essential parts,
FIG. 2a is a cross-sectional view of a bracket assembly according to an embodiment of the present invention, FIG. 2b is an enlarged cross-sectional view of the essential parts,
FIGS. 3a and 3b are waveform diagrams that compare and show the level of electrical noise depending on whether the brush terminal plate is grounded or not. 11... End bracket, 12... Bearing, 1
3... Recessed portion, 15... Bracket plate, 16... Terminal plate, 17... Terminal portion, 18... Through hole, 19...
...bulge, 20...brush.
Claims (1)
る軸受保持部を形成した合成樹脂製のエンドブラ
ケツトと、このエンドブラケツトと一体に樹脂モ
ールドされ、前記エンドブラケツト中に埋設され
る磁性体金属板よりなるブラケツトと、前記エン
ドブラケツトの表面に少なくとも一部が位置する
如く前記エンドブラケツトと一体モールド成形さ
れて固着される端子板とを備え、前記端子板には
エンドブラケツトを貫通する端子部を設け、この
端子部のエンドブラケツト中に位置する部分に前
記ブラケツト板に設けた貫通孔に圧接する膨出部
を形成してなる小型直流モータのブラケツト。1. An end bracket made of synthetic resin that has a bearing holding part in the center that holds a bearing with a spherical outer circumferential surface, and a magnetic metal that is integrally molded with the end bracket and embedded in the end bracket. The terminal plate includes a bracket made of a plate, and a terminal plate integrally molded and fixed to the end bracket such that at least a portion thereof is located on the surface of the end bracket, and the terminal plate has a terminal portion passing through the end bracket. A bracket for a small DC motor, wherein a bulge portion is formed in a portion of the terminal portion located in the end bracket to press into contact with a through hole provided in the bracket plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56116988A JPS5819141A (en) | 1981-07-24 | 1981-07-24 | Bracket for miniature dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56116988A JPS5819141A (en) | 1981-07-24 | 1981-07-24 | Bracket for miniature dc motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5819141A JPS5819141A (en) | 1983-02-04 |
| JPS6112464B2 true JPS6112464B2 (en) | 1986-04-08 |
Family
ID=14700695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56116988A Granted JPS5819141A (en) | 1981-07-24 | 1981-07-24 | Bracket for miniature dc motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819141A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6122172U (en) * | 1984-07-12 | 1986-02-08 | 東京パ−ツ工業株式会社 | Brush-based device for small motors |
| GB9826912D0 (en) * | 1998-12-09 | 1999-01-27 | Johnson Electric Sa | Miniature electric motor |
| CN102246394B (en) | 2008-12-11 | 2015-10-07 | 松下电器产业株式会社 | Brushless motor and the electric equipment with this brushless motor |
-
1981
- 1981-07-24 JP JP56116988A patent/JPS5819141A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5819141A (en) | 1983-02-04 |
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