JPS6015289Y2 - Permanent magnet with yoke - Google Patents
Permanent magnet with yokeInfo
- Publication number
- JPS6015289Y2 JPS6015289Y2 JP18074382U JP18074382U JPS6015289Y2 JP S6015289 Y2 JPS6015289 Y2 JP S6015289Y2 JP 18074382 U JP18074382 U JP 18074382U JP 18074382 U JP18074382 U JP 18074382U JP S6015289 Y2 JPS6015289 Y2 JP S6015289Y2
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- yoke
- recess
- spot welding
- welding
- 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
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Optical Recording Or Reproduction (AREA)
Description
【考案の詳細な説明】
本考案はヨーク付永久磁石に関するものであり、その目
的とするところはスポット溶接時の溶接電流が少なくて
済みζかつ溶接によって永久磁石の磁気特性が損なわれ
ることのないヨーク付永久磁石を提供することにある。[Detailed description of the invention] The present invention relates to a permanent magnet with a yoke, and its purpose is to reduce the welding current during spot welding and to prevent the magnetic properties of the permanent magnet from being impaired by welding. An object of the present invention is to provide a permanent magnet with a yoke.
一般に、この種のヨーク付永久磁石は単安定型または双
安定型のラッチングリレーのアマチュアあるいは固定子
として用いられるものであり、磁気飽和をなくすために
断面積をできるだけ大きくしている。Generally, this type of permanent magnet with a yoke is used as an armature or stator of a monostable or bistable latching relay, and its cross-sectional area is made as large as possible to eliminate magnetic saturation.
ところで、このヨーク付永久磁石は第１図および第２図
に示すように、磁性体棒よりなるヨーク１．１を永久磁
石２の両端面にスポット溶接（矢印Ａ）にて取着するよ
うになっているが、ヨーク１の断面積を大きくするため
に厚み寸法（を大きくした場合、スポット溶接時に大き
な溶接電流が必要になるとともに、スポット溶接によっ
て永久磁石２の磁気特性が大きく変化してしまうという
欠点があった。By the way, as shown in FIGS. 1 and 2, this permanent magnet with a yoke is constructed by attaching a yoke 1.1 made of a magnetic rod to both end surfaces of a permanent magnet 2 by spot welding (arrow A). However, if the thickness is increased to increase the cross-sectional area of yoke 1, a large welding current will be required during spot welding, and the magnetic properties of permanent magnet 2 will change significantly due to spot welding. There was a drawback.
本考案は上記の点に鑑みて為されたものである。The present invention has been made in view of the above points.
以下、実施例について図を用いて説明する。Examples will be described below using figures.
第３図は本考案−実施例を示すもので、３はヨーク１の
永久磁石２対向面の背面に穿設された凹部であり、この
凹部３の底面の一所においてスポット溶接（矢印Ａ）を
施して永久磁石２の両端にヨーク１を溶接固定している
。Fig. 3 shows an embodiment of the present invention, in which numeral 3 is a recess formed on the back surface of the yoke 1 facing the permanent magnet 2, and spot welding (arrow A) is performed at one place on the bottom of the recess 3. The yoke 1 is welded and fixed to both ends of the permanent magnet 2.
なお永久磁石２は矢印Ｂ方向に磁化されている。Note that the permanent magnet 2 is magnetized in the direction of arrow B.
いま、実施例にあっては薄肉となっている凹部３の底面
の一所をスポット溶接するようになっているため、溶接
電流が少なくて済むとともに、溶接電流の磁界およびジ
ュール発熱による影響で永久磁石２の磁気特性が損なわ
れることがない。In the present embodiment, spot welding is carried out at one place on the bottom of the recess 3, which is thin, so the welding current is small, and the magnetic field of the welding current and Joule heat generation cause permanent damage. The magnetic properties of the magnet 2 are not impaired.
また、凹部３の巾ちをヨーク１の永久磁石２対向面の巾
ちよりも十分小さくしておけば、凹部３を形成したこと
によるヨーク１の磁気飽和が起きないことになる。Furthermore, if the width of the recess 3 is made sufficiently smaller than the width of the surface of the yoke 1 facing the permanent magnet 2, magnetic saturation of the yoke 1 due to the formation of the recess 3 will not occur.
本考案は上述のように、永久磁石の両端にそれぞれ取着
される磁性体棒よりなるヨークの永久磁石対向面の背面
に凹部を穿設し、凹部の一所においてスポット溶接を施
して永久磁石の両端にヨークを溶接固定したものであり
、薄肉となる凹部の底面の一所においてスポット溶接を
施しているので、溶接電流が少なくて済み、かつ溶接に
よって永久磁石の磁気特性が損なわれることがないとい
う利点がある。As mentioned above, the present invention consists of making a recess on the back of the surface facing the permanent magnet of a yoke made of magnetic rods attached to both ends of the permanent magnet, and performing spot welding at one place of the recess to create a permanent magnet. A yoke is welded to both ends of the magnet, and spot welding is performed at one location on the bottom of the thin recess, so the welding current is small and the magnetic properties of the permanent magnet are not impaired by welding. There is an advantage that there is no
第１図は従来例の分解斜視図、第２図は同上の上面図、
第３図は本考案の一実施例の上面図であリ、
１はヨーク、
２は永久磁石、
３は凹部であ
る。Figure 1 is an exploded perspective view of the conventional example, Figure 2 is a top view of the same as above,
FIG. 3 is a top view of an embodiment of the present invention, in which 1 is a yoke, 2 is a permanent magnet, and 3 is a recess.
Claims (1)
ヨークの永久磁石対向面の背面に凹部を穿設し、凹部の
一所においてスポット溶接を施して永久磁石の両端にヨ
ークを溶接固定して成るヨーク付永久磁石。A recess is bored in the back of the surface facing the permanent magnet of the yoke, which is made of a magnetic bar attached to each end of the permanent magnet, and spot welding is performed at one place in the recess to weld and fix the yoke to both ends of the permanent magnet. A permanent magnet with a yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18074382U JPS6015289Y2 (en) | 1982-11-30 | 1982-11-30 | Permanent magnet with yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18074382U JPS6015289Y2 (en) | 1982-11-30 | 1982-11-30 | Permanent magnet with yoke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5984807U JPS5984807U (en) | 1984-06-08 |
| JPS6015289Y2 true JPS6015289Y2 (en) | 1985-05-14 |
Family
ID=30391821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18074382U Expired JPS6015289Y2 (en) | 1982-11-30 | 1982-11-30 | Permanent magnet with yoke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6015289Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019024748A1 (en) * | 2017-08-04 | 2019-02-07 | 株洲悍威磁电科技有限公司 | Electric permanent magnet chuck |
-
1982
- 1982-11-30 JP JP18074382U patent/JPS6015289Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5984807U (en) | 1984-06-08 |
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