JPS6210102B2 - - Google Patents
Info
- Publication number
- JPS6210102B2 JPS6210102B2 JP13612377A JP13612377A JPS6210102B2 JP S6210102 B2 JPS6210102 B2 JP S6210102B2 JP 13612377 A JP13612377 A JP 13612377A JP 13612377 A JP13612377 A JP 13612377A JP S6210102 B2 JPS6210102 B2 JP S6210102B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical
- yoke
- magnet
- magnetic block
- fixing
- 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
- 238000000465 moulding Methods 0.000 claims description 8
- 229920003002 synthetic resin Polymers 0.000 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Dc Machiner (AREA)
Description
【発明の詳細な説明】
本発明はモータに用いられる円筒形マグネツト
の固定方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of fixing a cylindrical magnet used in a motor.
従来外側に円筒形ヨークと、中心側にマグネツ
トを配置した、モータのステータにおいては、第
１図に示すようにヨーク１と、円筒形マグネツト
２とをプラスチツク３により同時に一体に成形し
て、マグネツト２をヨーク１内に固定することが
行われていた。この方法によればマグネツト２を
ヨーク１内に挿入して固定することが難しく、か
つ自動化しにくいという欠点を伴つていた。本発
明は上記の欠点を改善し、ミニモータにおけるマ
グネツトとヨークとの固定を簡単にした方法を提
供するにある。 Conventionally, in a motor stator that has a cylindrical yoke on the outside and a magnet on the center side, the yoke 1 and the cylindrical magnet 2 are integrally molded at the same time using plastic 3, as shown in FIG. 2 was fixed within the yoke 1. According to this method, it is difficult to insert and fix the magnet 2 into the yoke 1, and it is difficult to automate the process. The present invention aims to improve the above-mentioned drawbacks and provide a method for easily fixing the magnet and yoke in a mini motor.
第２図乃至第４図は本発明の一実施例を示すも
ので、図において１１，１１′は分割型のフエラ
イト磁石を示すもので、ほゞ半円形をなし、接合
した中心には軸（図示せず）挿入用の孔１２が形
成されており、マグネツト１１，１１′を接合
し、合成樹脂１３をもつて円筒形体に成型する。
このさい円筒体の底面には１対のカシメ用の突起
１４，１４′と、中心側に凸出部１５が形成され
る。この場合マグネツト１１，１１′の寸法精度
が悪い場合は、第２図に示すように、表面に成形
バリ１６又は全面に薄い膜が発生する。 Figures 2 to 4 show an embodiment of the present invention. In the figures, 11 and 11' indicate split-type ferrite magnets, which are approximately semicircular and have an axis ( A hole 12 for insertion (not shown) is formed, and the magnets 11 and 11' are joined together and molded with synthetic resin 13 into a cylindrical shape.
At this time, a pair of caulking protrusions 14, 14' and a protrusion 15 are formed on the bottom surface of the cylindrical body. In this case, if the dimensional accuracy of the magnets 11, 11' is poor, molding burrs 16 or a thin film will be formed on the entire surface, as shown in FIG.
次に上記のようにして形成されたマグネツトブ
ロツクの円筒面を第３図に示すように研削する。 Next, the cylindrical surface of the magnetic block formed as described above is ground as shown in FIG.
一般に２割型のマグネツトの場合は、第５図に
示すように、円の一部が欠けた形状になるため、
２個接合しても円形にならず研磨砥石１９により
センタレス研削はできない。しかるに本発明にお
いては、マグネツト及び合成樹脂で、円筒形のマ
グネツトブロツクが形成されるので、第３図に示
すようにセンタレス研削を行うことができる。 Generally, in the case of a 20% type magnet, as shown in Fig. 5, it has a shape with a part of the circle missing.
Even if two pieces are joined together, they will not become circular and centerless grinding cannot be performed using the grinding wheel 19. However, in the present invention, since a cylindrical magnetic block is formed from a magnet and a synthetic resin, centerless grinding can be performed as shown in FIG.
次に有底円筒形のヨーク１７の底部にマグネツ
トブロツク固定用の孔を設け、これらの孔にマグ
ネツトブロツクの底部の突起１４，１４′及びボ
ス部１５を挿入し、突起１４，１４′とヨーク１
７とを加熱又は超音波によりカシメを行う。この
さいマグネツトブロツクのボス部１５でヨーク１
７との芯合せを行う。 Next, holes for fixing the magnetic block are provided at the bottom of the bottomed cylindrical yoke 17, and the protrusions 14, 14' and boss portion 15 at the bottom of the magnetic block are inserted into these holes. and yoke 1
7 is caulked by heating or ultrasonic waves. At this time, the yoke 1 is connected to the boss portion 15 of the magnetic block.
Perform alignment with 7.
第６図乃至第８図は本発明の他の実施例を示す
もので、分割型のマグネツト１１，１１′を合成
樹脂１３で一体成形を行う際に、マグネツトブロ
ツクの底に相当する部分にマグネツトブロツクの
径と同じ径を有する底板１８を一体に同時成形す
る。底板１８としては黄銅などの金属を円板状に
打ち抜いたものを用いるか、又は連続フープ状の
ものを用いる。この場合には同時成形後打ち抜く
ものである。 6 to 8 show another embodiment of the present invention, in which when split magnets 11, 11' are integrally molded with synthetic resin 13, a portion corresponding to the bottom of the magnetic block is A bottom plate 18 having the same diameter as the magnetic block is integrally molded at the same time. As the bottom plate 18, a disk-shaped piece punched out of metal such as brass or a continuous hoop-shaped piece is used. In this case, punching is performed after simultaneous molding.
成形後は第一実施例の場合と同じように、マグ
ネツトブロツクの外周面を円筒又はセンタレス研
削を行う。ついで有底円筒形のヨーク１７の中心
側の孔とマグネツトブロツクの底板１８とを合
せ、ヨーク１７と底板１８とを溶接して一体に結
合する。溶接にはレーザ溶接を使用するのが好ま
しい。この理由はプラスチツク部分がとけないか
らである。 After molding, the outer peripheral surface of the magnetic block is subjected to cylindrical or centerless grinding in the same manner as in the first embodiment. Next, the hole on the center side of the yoke 17, which has a cylindrical shape with a bottom, is aligned with the bottom plate 18 of the magnetic block, and the yoke 17 and the bottom plate 18 are welded and joined together. Preferably, laser welding is used for welding. The reason for this is that the plastic part does not melt.
本発明は叙上のように、ほぼ半円形の分割型の
磁石を合成樹脂をもつて円筒形体に成型し、この
成型時に円筒形体の底面に１対のカシメ用の突起
と、中心側にボス部を形成する工程と、前記の工
程によりえられた円筒形体の円筒面をセンタレス
研削を行う工程と、有底円筒形のヨークの底部に
マグネツトブロツク固定用の孔を設ける工程と、
前記のヨークの底部に設けられた孔に、前記のマ
グネツトブロツク底部に設けた突起及びボス部を
挿入して固定する工程とを具備することにより、
(イ) 研削工程を備えることによつて、分割型磁石
を用い合成樹脂で成形したマグネツトを完全に
円筒形体に仕上げること
(ロ) 円筒形ヨークの底部及び円筒形体の底面に、
カシメ用突起及び中心のボス部とを結合するこ
とにより、マグネツトを円筒形体に研削するこ
とと相まつて、円筒形ヨークの内側と、マグネ
ツトの円筒面との間に所定の間隙を保持せしめ
うること
等の効果を有するものである。 As described above, the present invention involves molding a roughly semicircular split-type magnet into a cylindrical body using synthetic resin, and at the time of molding, a pair of caulking protrusions are formed on the bottom surface of the cylindrical body, and a boss is formed on the center side. a step of centerless grinding the cylindrical surface of the cylindrical body obtained in the above step; a step of providing a hole for fixing the magnetic block in the bottom of the bottomed cylindrical yoke;
(a) By including a grinding step, , Finishing a magnet molded from synthetic resin into a completely cylindrical body using a split magnet (b) On the bottom of the cylindrical yoke and the bottom of the cylindrical body,
By combining the caulking protrusion and the central boss, it is possible to grind the magnet into a cylindrical shape and maintain a predetermined gap between the inside of the cylindrical yoke and the cylindrical surface of the magnet. It has the following effects.
第１図は従来例、第２図は本発明のマグネツト
ブロツクの斜視図、第３図は第２図においてＡ−
Ａ線に沿う断面図、第４図はステタブロツクの断
面図、第５図はセンタレス研削法の一例、第６図
乃至第８図は本発明の他の実施例を示す。
１１，１１′……マグネツト、１２……孔、１
３……合成樹脂、１４，１４′……突起、１５…
…ボス部、１６……成形バリ、１７……ヨーク、
１８……底板、１９……研削砥石。
FIG. 1 is a conventional example, FIG. 2 is a perspective view of the magnetic block of the present invention, and FIG.
4 is a sectional view of the stator block, FIG. 5 is an example of the centerless grinding method, and FIGS. 6 to 8 show other embodiments of the present invention. 11, 11'... Magnet, 12... Hole, 1
3...Synthetic resin, 14,14'...Protrusion, 15...
... Boss part, 16 ... Molding burr, 17 ... Yoke,
18... Bottom plate, 19... Grinding wheel.
Claims (1)
て円筒形体に成型し、この成型時に円筒形体の底
面に１対のカシメ用の突起と、中心側にボス部を
形成する工程と、前記の工程によりえられた円筒
形体の円筒面をセンタレス研削を行う工程と、有
底円筒形のヨークの底部にマグネツトブロツク固
定用の孔を設ける工程と、前記のヨークの底部に
設けられた孔に、前記のマグネツトブロツク底部
に設けた突起及びボス部を挿入して固定する工程
とを具備することを特徴とする円筒形マグネツト
の固定方法。1. A step of molding a roughly semicircular split magnet into a cylindrical body using synthetic resin, and forming a pair of caulking protrusions on the bottom surface of the cylindrical body and a boss portion on the center side during this molding; A step of centerless grinding the cylindrical surface of the cylindrical body obtained by the step of step 2, a step of providing a hole for fixing the magnetic block at the bottom of the bottomed cylindrical yoke, and a step of providing the hole provided at the bottom of the yoke. A method for fixing a cylindrical magnet, comprising the steps of: inserting and fixing the protrusion and boss provided on the bottom of the magnetic block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13612377A JPS5468911A (en) | 1977-11-11 | 1977-11-11 | Fixing of cylindrical magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13612377A JPS5468911A (en) | 1977-11-11 | 1977-11-11 | Fixing of cylindrical magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5468911A JPS5468911A (en) | 1979-06-02 |
| JPS6210102B2 true JPS6210102B2 (en) | 1987-03-04 |
Family
ID=15167832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13612377A Granted JPS5468911A (en) | 1977-11-11 | 1977-11-11 | Fixing of cylindrical magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5468911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0451087Y2 (en) * | 1987-06-25 | 1992-12-02 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8013696B2 (en) | 2008-10-14 | 2011-09-06 | Nexteer (Beijing) Technology Co., Ltd. | Magnetic apparatus and method of manufacturing the magnetic apparatus |
-
1977
- 1977-11-11 JP JP13612377A patent/JPS5468911A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0451087Y2 (en) * | 1987-06-25 | 1992-12-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5468911A (en) | 1979-06-02 |
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