JPS6031421Y2 - Coreless motor rotor - Google Patents
Coreless motor rotorInfo
- Publication number
- JPS6031421Y2 JPS6031421Y2 JP1976089709U JP8970976U JPS6031421Y2 JP S6031421 Y2 JPS6031421 Y2 JP S6031421Y2 JP 1976089709 U JP1976089709 U JP 1976089709U JP 8970976 U JP8970976 U JP 8970976U JP S6031421 Y2 JPS6031421 Y2 JP S6031421Y2
- Authority
- JP
- Japan
- Prior art keywords
- terminal piece
- coil
- cylindrical
- holding plate
- fixed
- 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
Landscapes
- Motor Or Generator Current Collectors (AREA)
- Dc Machiner (AREA)
Description
【考案の詳細な説明】
円筒形整流子を有する従来のコアレスモーターのロータ
ーは第１図及び第２図に示すように、Ｌ形のセグメント
ａを合成樹脂成形よりなる円板状のコイル保持板すに、
軸方向に整列する端１が円筒整流子ｄを形威し各端子片
２が放射状に配設されるよう複数個一体成形により埋込
み固定したコイル保持板を、上端縁にタップ３を複数個
設けた円筒コイルＣの上部内周縁に固着して各タップ３
を各セグメントａの端子片２にスポット溶接にて接続し
た構造であるため、セグメントを金型に投入する際に第
５図の如く上下の金型１０，１１面がセグメント９の端
子片２に密接して閉じればよいが、密接して閉じないと
（例えば型締時にセグメントの端子片を噛み込むと）合
成樹脂が端子片２の上面、下面に流れ込み、端子片の上
下面に合成樹脂被膜（いわゆる成型ばり）が形威され、
円筒コイルのタップとの溶接時に熔接不良を起しくまた
溶接用電極の破損をきたし）、スパークの原因となる欠
点があった。[Detailed description of the invention] As shown in Figs. 1 and 2, in the rotor of a conventional coreless motor having a cylindrical commutator, the L-shaped segment a is formed by forming a disc-shaped coil holding plate made of synthetic resin. Suni,
A plurality of coil holding plates are embedded and fixed by integral molding so that the ends 1 aligned in the axial direction form a cylindrical commutator d and each terminal piece 2 is arranged radially, and a plurality of taps 3 are provided on the upper edge. Each tap 3 is fixed to the upper inner peripheral edge of the cylindrical coil C.
is connected to the terminal piece 2 of each segment a by spot welding, so when the segments are put into the mold, the upper and lower mold surfaces 10 and 11 are connected to the terminal piece 2 of the segment 9 as shown in Figure 5. It is fine if they are closed tightly, but if they are not closed tightly (for example, if the terminal piece of the segment is bitten during mold clamping), the synthetic resin will flow into the upper and lower surfaces of the terminal piece 2, and the synthetic resin coating will form on the upper and lower surfaces of the terminal piece. (so-called molding burrs) are shaped,
When welding a cylindrical coil with a tap, it causes poor welding and damage to the welding electrode), which has the disadvantage of causing sparks.
か）る点に鑑み本考案は第３図に示すように、端子片２
に凸起部ｇを設けた複数個のＬ字形セグメントａを、軸
方向に整列する端１が円筒整流子ｄを形威し放射状は配
列された端子片２の凸起部ｇが合成樹脂成形よりなる円
板状のコイル保持板すの上面より突出するように一体成
形により埋込み固定し、該コイル保持板すの外周胴を円
筒コイルＣの上部内周縁に固着して円筒コイルＣの上端
縁に設けたタップ３を各セグメントａの端子片２の凸起
部ｇに接続して倒カップ状のローターＲを構成したもの
である。In view of the above, the present invention has a terminal piece 2 as shown in Fig. 3.
A plurality of L-shaped segments a are provided with protrusions g on the ends 1 of which are arranged in the axial direction to form a cylindrical commutator d, and the protrusions g of the terminal pieces 2 arranged radially are molded with synthetic resin. A disk-shaped coil holding plate is embedded and fixed by integral molding so as to protrude from the upper surface of the coil holding plate, and the outer circumferential body of the coil holding plate is fixed to the upper inner circumferential edge of the cylindrical coil C, and the upper end edge of the cylindrical coil C is fixed. A rotor R having an inverted cup shape is constructed by connecting the tap 3 provided in the terminal piece 2 to the convex portion g of the terminal piece 2 of each segment a.
この考案は上記したようにセグメント９の端子片２に凸
起部ｇを設けたので、コイル保持板と成型時に例えば第
６図の如く、上方の金型１ｏに凸起部ｇを逃がす凹部１
２を設けておくことにより、金型１０，１１面が密接し
て閉じることなく成型ばりが端子片２の上下面に生ずる
とも凹部１２内に突出していた凸起部ｇにまで成型ばり
が付着発生することがなく、円筒コイルのタップとの熔
接不良を簡単に防止でき、導通不良がなく、精度の良い
ローターが簡易に得られる効果がある。In this invention, as described above, the terminal piece 2 of the segment 9 is provided with the protruding part g, so that when molding the coil holding plate, for example, as shown in FIG.
2, even if molding burrs are formed on the upper and lower surfaces of the terminal piece 2 without the surfaces of the molds 10 and 11 being closely closed, the molding burrs will adhere to the protrusion g that protruded into the recess 12. This has the effect of easily preventing welding defects between the cylindrical coil and the tap, eliminating conduction defects, and easily obtaining a highly accurate rotor.
第１図は従来例の断面図、第２図は同上のイ部分の拡大
斜視図、第３図は本考案の実施例を示す断面図、第４図
は同上の口部分の拡大斜視図である。
第５図は従来例を示す断面図、第６図は上記本考案の一
実施例を示す断面図である。
ａはセメント、２は端子片、ｇは凸起部、ｂは
コイル保持板、
Ｃは円筒コイル、
３はタップ。Fig. 1 is a cross-sectional view of the conventional example, Fig. 2 is an enlarged perspective view of the part A of the same, Fig. 3 is a cross-sectional view showing the embodiment of the present invention, and Fig. 4 is an enlarged perspective view of the mouth part of the same. be. FIG. 5 is a sectional view showing a conventional example, and FIG. 6 is a sectional view showing an embodiment of the present invention. a is cement, 2 is a terminal piece, g is a protrusion, b is a coil holding plate, C is a cylindrical coil, and 3 is a tap.
Claims (1)
軸方向に整列する端が円筒整流子を形威し放射状に配列
された端子片の凸起部が合成樹脂成形よりなる円板状の
コイル保持板の上面より突出するように一体成形により
埋込み固定し、該コイル保持板の外周胴を円筒コイルの
上部内周縁に固着して円筒コイル上端縁に設けたタップ
を各セグメントの端子片凸起部に接続して成るコアレス
モーターのローター。Multiple L-shaped segments with protrusions on the terminal piece,
The ends aligned in the axial direction form a cylindrical commutator, and the convex parts of the terminal pieces arranged radially are embedded and fixed by integral molding so that they protrude from the upper surface of the disk-shaped coil holding plate made of synthetic resin molding. A rotor for a coreless motor, wherein the outer circumferential body of the coil holding plate is fixed to the upper inner circumferential edge of a cylindrical coil, and a tap provided on the upper edge of the cylindrical coil is connected to a protruding portion of a terminal piece of each segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1976089709U JPS6031421Y2 (en) | 1976-07-05 | 1976-07-05 | Coreless motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1976089709U JPS6031421Y2 (en) | 1976-07-05 | 1976-07-05 | Coreless motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS537605U JPS537605U (en) | 1978-01-23 |
| JPS6031421Y2 true JPS6031421Y2 (en) | 1985-09-19 |
Family
ID=28700370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1976089709U Expired JPS6031421Y2 (en) | 1976-07-05 | 1976-07-05 | Coreless motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6031421Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5909047B2 (en) * | 2011-03-30 | 2016-04-26 | ミネベア株式会社 | Brushed DC motor rotor and brushed DC motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5021003U (en) * | 1973-06-18 | 1975-03-10 |
-
1976
- 1976-07-05 JP JP1976089709U patent/JPS6031421Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS537605U (en) | 1978-01-23 |
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