JP3485346B2 - Self-holding solenoid - Google Patents
Self-holding solenoidInfo
- Publication number
- JP3485346B2 JP3485346B2 JP07269994A JP7269994A JP3485346B2 JP 3485346 B2 JP3485346 B2 JP 3485346B2 JP 07269994 A JP07269994 A JP 07269994A JP 7269994 A JP7269994 A JP 7269994A JP 3485346 B2 JP3485346 B2 JP 3485346B2
- Authority
- JP
- Japan
- Prior art keywords
- fixed
- coil
- self
- iron core
- permanent magnet
- 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 - Fee Related
Links
Landscapes
- Electromagnets (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する分野】本発明は丸型形状又は円筒形状の
自己保持型プッシュプルソレノイドの構造に関するもの
である。
【０００２】
【従来の技術】図１は従来の丸型形状のプッシュプルソ
レノイド構造の一例である。図中１は磁性体のケ−ス、
２は磁性体のベ−ス（固定鉄芯）、３は非磁性体の軸
受、４はコイルボビン、５はコイル、６は磁性体のプラ
ンジャ（可動鉄芯）、７はプランジャに固定された非磁
性体のシャフト、８は非磁性体の残留磁気防止板、９は
復帰バネ、１０はリ−ド線である。
【０００３】この動作は、コイル５に通電し励磁するこ
とにより、プランジャ６はベ−ス２の方に引込まれ吸引
動作を行う。この時シャフト７は、プランジャ６といっ
しょに軸受３の中をすべって動く。復帰動作はコイル５
への通電を止めて消磁すると、復帰バネ９の力により元
の位置にもどる。
【０００４】プランジャ６を吸着状態に保持していたい
時はコイル５に連続通電しなければならない。この為コ
イルは発熱し、それに伴い吸着力も弱くなるし電池駆動
の場合は電池寿命が短くなる。
（２）
【０００５】
【発明の目的】本発明は丸型形状又は円筒形状のプッシ
ュプルソレノイドに於いて、ベ−スフランジ面に永久磁
石を入れることにより無通電時でも吸着状態を保つこと
のできる自己保持型ソレノイドの提供を目的とする。
【０００６】
【実施例】図２は本発明の一実施例を示す構造図で、従
来例と同じ符号は同等部品を示す。ベ−ス２の内側フラ
ンジ面に中心部に穴の明いたド−ナツ形状の永久磁石１
２を取付ける。中間磁極１３は永久磁石１２をベ−ス２
とはさみ込むようにしてケ−ス１に圧入し固定する。ベ
−ス２はホルダ１１に圧入固定されホルダ１１は中間磁
極１３に圧入固定する。
【０００７】この構造にすることにより、励磁すると図
３（ａ）の消磁状態から図３(ｂ)のように吸引動作する
が、吸着後通電を止めても内蔵された永久磁石１２によ
り図３（ｂ）の矢印のような磁気回路が形成されるので
吸着状態のまま保持される。
【０００８】復帰する時はコイル５のリ−ド線１０に通
電する＋−の極性を逆にして永久磁石の磁力を減磁させ
ることにより復帰バネ９の力によって消磁位置図３
（ａ）の様に復帰する。
【０００９】尚オ−プンフレ−ムタイプの自己保持型ソ
レノイドは多くの種類のものが知られているが、永久磁
石の極性をソレノイドの中心から外へ向く方向に配置し
ている。従ってソレノイド自体が大きくなってしまう等
の欠点がある。本発明の構成では永久磁石は磁性体のベ
−スに挿入される様にド−ナツ形にすることが出来、ソ
レノイドの小型化が可能となる。
（３）
【００１０】
【効果の説明】パルス入力で吸引し、永久磁石で吸着保
持となるので保持電力が不要となり保持時のコイル発熱
はない。この為省エネ効果が計れ、ソレノイドの小型化
ができる。又、吸着状態での停電時にも影響なく保持状
態を保つことができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a round or cylindrical self-holding push-pull solenoid. 2. Description of the Related Art FIG. 1 shows an example of a conventional push-pull solenoid having a round shape. In the figure, 1 is a case of a magnetic material,
2 is a magnetic base (fixed iron core), 3 is a non-magnetic bearing, 4 is a coil bobbin, 5 is a coil, 6 is a magnetic plunger (movable iron core), and 7 is a non-magnetic plunger fixed to the plunger. A magnetic shaft 8, a non-magnetic residual magnetic prevention plate 8, a return spring 9, and a lead wire 10. In this operation, when the coil 5 is energized and excited, the plunger 6 is drawn toward the base 2 to perform a suction operation. At this time, the shaft 7 slides in the bearing 3 together with the plunger 6. The return operation is coil 5
When the power supply to the power supply is stopped and degaussed, it returns to the original position by the force of the return spring 9. When it is desired to keep the plunger 6 in the suction state, the coil 5 must be continuously energized. For this reason, the coil generates heat, and accordingly, the attraction force is weakened, and the battery life is shortened when the battery is driven. (2) An object of the present invention is to provide a push-pull solenoid having a round shape or a cylindrical shape, in which a permanent magnet is inserted into a base flange surface so that an attracted state can be maintained even when power is not supplied. It is intended to provide a self-holding solenoid. FIG. 2 is a structural view showing an embodiment of the present invention. The same reference numerals as those in the conventional example denote the same parts. Donut-shaped permanent magnet 1 having a hole in the center on the inner flange surface of base 2
Install 2. The intermediate magnetic pole 13 is a base 2 of the permanent magnet 12.
And press-fit into case 1 to fix it. The base 2 is press-fitted and fixed to the holder 11, and the holder 11 is press-fitted and fixed to the intermediate magnetic pole 13. [0007] With this structure, when the magnet is excited, the attraction operation is performed as shown in FIG. 3B from the demagnetized state of FIG. 3A. Since a magnetic circuit is formed as shown by the arrow in (b), the magnetic circuit is held in the attracted state. At the time of return, the polarity of + and-applied to the lead wire 10 of the coil 5 is reversed to demagnetize the magnetic force of the permanent magnet.
It returns as shown in (a). Although many types of open-frame type self-holding solenoids are known, the polarity of the permanent magnet is arranged so as to extend from the center of the solenoid to the outside. Therefore, there is a disadvantage that the solenoid itself becomes large. In the configuration of the present invention, the permanent magnet can be formed in a donut shape so as to be inserted into the base of the magnetic material, and the size of the solenoid can be reduced. (3) Description of the Effect [0010] Since suction is performed by pulse input and suction is held by a permanent magnet, no holding power is required, and there is no coil heating during holding. For this reason, an energy saving effect can be obtained, and the size of the solenoid can be reduced. Further, the holding state can be maintained without any influence even in the event of a power failure in the suction state.
【図面の簡単な説明】
【図１】従来の丸型形状プッシュプルソレノイドの構造
図
【図２】本発明の自己保持型プッシュプルソレノイドの
構造図
【図３】（ａ）、（ｂ）本発明の自己保持型プッシュプ
ルソレノイドの動作及び保持状態図
【符号の説明】
１ ケ−ス
２ ベ−ス
３ 軸受
４ コイルボビン
５ コイル
６ プランジャ
７ シャフト
８ 残留磁気防止板
９ 復帰バネ
１０ リ−ド線
１１ ホルダ
１２ 永久磁石
１３ 中間磁極
（４）
１４ スリ−ブ
１５ ストッパBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural diagram of a conventional round push-pull solenoid. FIG. 2 is a structural diagram of a self-holding push-pull solenoid of the present invention. Operation and holding state diagram of the self-holding push-pull solenoid of the invention [Description of References] 1 Case 2 Base 3 Bearing 4 Coil bobbin 5 Coil 6 Plunger 7 Shaft 8 Residual magnetic prevention plate 9 Return spring 10 Lead wire 11 Holder 12 Permanent magnet 13 Intermediate magnetic pole (4) 14 Sleeve 15 Stopper
Claims (1)
−ス及び固定鉄芯と出力シャフトが固着された磁性体の
可動鉄芯からなる円筒形状のプッシュプルソレノイドに
於いて、前記固定鉄心が圧入固定されるホルダと、該ホ
ルダ及び前記ケースに圧入固定される中間磁極とを設
け、固定鉄芯の内側フランジ面に永久磁石を装着し、該
永久磁石を前記中間磁極と前記固定鉄心とではさみ込む
ようにした事を特徴とする自己保持型ソレノイド。(57) [Claims 1] A cylindrical shape composed of a coil, a case of a magnetic material surrounding the entire circumference of the coil, and a movable iron core of a magnetic material to which a fixed iron core and an output shaft are fixed. In a push-pull solenoid, a holder into which the fixed iron core is press-fitted and fixed;
And an intermediate magnetic pole that is press-fitted and fixed to the case.
Only, a permanent magnet mounted on an inner flange surface of the fixed core, the
A permanent magnet is sandwiched between the intermediate magnetic pole and the fixed iron core
A self-holding solenoid characterized by the above .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07269994A JP3485346B2 (en) | 1994-03-16 | 1994-03-16 | Self-holding solenoid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07269994A JP3485346B2 (en) | 1994-03-16 | 1994-03-16 | Self-holding solenoid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07263222A JPH07263222A (en) | 1995-10-13 |
| JP3485346B2 true JP3485346B2 (en) | 2004-01-13 |
Family
ID=13496879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07269994A Expired - Fee Related JP3485346B2 (en) | 1994-03-16 | 1994-03-16 | Self-holding solenoid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3485346B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110727072B (en) * | 2019-11-20 | 2023-11-10 | 杭州昱华科技有限公司 | Optical fiber distribution box for communication engineering |
-
1994
- 1994-03-16 JP JP07269994A patent/JP3485346B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07263222A (en) | 1995-10-13 |
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