JPS6025861Y2 - solenoid - Google Patents
solenoidInfo
- Publication number
- JPS6025861Y2 JPS6025861Y2 JP16879781U JP16879781U JPS6025861Y2 JP S6025861 Y2 JPS6025861 Y2 JP S6025861Y2 JP 16879781 U JP16879781 U JP 16879781U JP 16879781 U JP16879781 U JP 16879781U JP S6025861 Y2 JPS6025861 Y2 JP S6025861Y2
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- solenoid
- iron core
- movable iron
- bobbin
- 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
- Electromagnets (AREA)
Description
【考案の詳細な説明】
この考案は動作保持力の向上を図った自己保持形のソレ
ノイドに関する。[Detailed Description of the Invention] This invention relates to a self-holding solenoid with improved operation holding force.
最近ソレノイドはVTRを始め各種の電子機器に広く用
いられているが、これら機器の小形軽量化および省電力
の傾向とあいまってソレノイドについても小形で且つ省
電力化を図ったものが考えられている。Recently, solenoids have been widely used in various electronic devices such as VTRs, but as these devices are becoming smaller, lighter, and more energy efficient, solenoid models that are smaller and more energy efficient are being considered. .
しかして、従来、この種ソレノイドとして永久磁石を用
いて動作状態を自己保持形のソレノイドが考えられてい
る。Conventionally, as this type of solenoid, a solenoid that uses a permanent magnet to self-maintain its operating state has been considered.
ところが、このものは小形化の一貫として永久磁石に小
形のものを用いるとそれだけ動作保持力が低下してしま
い負荷を誤復帰するおそれがあった。However, in this device, when a smaller permanent magnet is used as part of the miniaturization effort, the operating holding force decreases accordingly, and there is a risk that the load may be reset erroneously.
このため所望の保持力を確保するには永久磁石の小形化
が難しく、このことがソレノイドの小形化に支障をきた
していた。For this reason, it is difficult to downsize the permanent magnet in order to ensure the desired holding force, and this poses an obstacle to downsizing the solenoid.
この考案は上記事情に鑑みてなされたもので、小形で、
しかも充分な動作保持力が得られる自己保持形のソレノ
イドを提供することを目的とする。This idea was made in view of the above circumstances, and it is small and
Moreover, it is an object of the present invention to provide a self-holding type solenoid that can obtain sufficient operation holding force.
以下、この考案の一実施例を図面に従い説明する。An embodiment of this invention will be described below with reference to the drawings.
第1図乃至第4図において1は励磁コイル2を巻装した
筒状ボビンで、このボビン1は一方開口端周縁に沿って
突壁1aを形成している。In FIGS. 1 to 4, reference numeral 1 denotes a cylindrical bobbin around which an excitation coil 2 is wound, and this bobbin 1 has a protruding wall 1a along the periphery of one opening end.
この突壁1a内に磁性体3,4を設け、この磁性体4に
フェライト又は希土類などの永久磁石5の一方磁極面(
S極)側を設けている。Magnetic bodies 3 and 4 are provided in this projecting wall 1a, and one magnetic pole face (
S pole) side is provided.
上記磁性体3,4は夫々上記ボビン1の一方開口に連通
ずる中空部を形成している。The magnetic bodies 3 and 4 each form a hollow portion that communicates with one opening of the bobbin 1.
ここで、磁性体3の中空部の直径をa11検体4の中空
部の直径をbとするとbくaとし、またbは後述する可
動鉄心10の直径よりやや大きくしている。Here, if the diameter of the hollow part of the magnetic body 3 is a11 and the diameter of the hollow part of the specimen 4 is b, then b is set to a, and b is slightly larger than the diameter of the movable iron core 10, which will be described later.
また、上記永久磁石5は環状体をなしている。Further, the permanent magnet 5 has an annular shape.
上記永久磁石5と磁性体4の中空部にかけてゴムのよう
な緩衝材6を挿入するとともに磁性体4と3の間に耐熱
性耐摩耗性のフィルム7を介在し、このフィルム7を介
して上記緩衝材6にて後述する可動鉄心10の移動を受
止めるようにしている。A cushioning material 6 such as rubber is inserted between the permanent magnet 5 and the hollow part of the magnetic body 4, and a heat-resistant and abrasion-resistant film 7 is interposed between the magnetic bodies 4 and 3. The cushioning material 6 is designed to absorb the movement of a movable core 10, which will be described later.
上記励磁コイル2を囲むようにフレーム8を設けている
。A frame 8 is provided to surround the excitation coil 2.
このフレーム8は断面コ字形状をなすもので底部に上記
永久磁石5の他方磁極面(N極)および緩衝材6を当接
している。This frame 8 has a U-shaped cross section, and has the other magnetic pole surface (N pole) of the permanent magnet 5 and the buffer material 6 in contact with the bottom thereof.
またこのフレーム8の開口端に上記ボビン1の他方開口
に連通ずる孔部を有するフロントフレーム9を設けてい
る。Further, a front frame 9 having a hole communicating with the other opening of the bobbin 1 is provided at the open end of the frame 8.
そして、このフロントフレーム9の孔部より上記ポビン
1の中空部に可動自在に可動鉄心10を挿通している。A movable iron core 10 is movably inserted through the hole of the front frame 9 into the hollow portion of the pobbin 1.
この可動鉄心10は上記緩衝材6に当接される側つまり
先端面中央部に溝部例えば断面V字状の溝部101を形
威し、この先端面の周縁部分に磁束が集中するように断
面積を小さくしている。This movable core 10 has a groove 101 with a V-shaped cross section, for example, in the center of the side that comes into contact with the buffer material 6, that is, the center of the tip, and has a cross-sectional area such that the magnetic flux is concentrated on the peripheral edge of the tip. is made smaller.
次にその作用を説明する。Next, its effect will be explained.
まず、第1図に示すように可動鉄心10が緩衝材6より
開離している状態つまり励磁コイル2の付勢前の状態で
は永久磁石5の磁束はφ1.φ2、φ3に分かれて透過
される。First, as shown in FIG. 1, when the movable iron core 10 is separated from the buffer material 6, that is, before the excitation coil 2 is energized, the magnetic flux of the permanent magnet 5 is φ1. The light is transmitted separately into φ2 and φ3.
ところがこの場合可動鉄心10と磁性体3,4との間の
ギャップは充分に大きいので磁束のほとんどはφ2.φ
3として透過される。However, in this case, the gap between the movable iron core 10 and the magnetic bodies 3 and 4 is sufficiently large, so that most of the magnetic flux flows through φ2. φ
It is transmitted as 3.
このため可動鉄心10には吸引力がほとんど作用しない
ので外部振動などによる可動鉄心10の誤動作がなく、
またこのためにリターンスプリング(図示せず)の偏倚
力を最少必要限度まで弱めることができる。Therefore, almost no suction force acts on the movable core 10, so there is no malfunction of the movable core 10 due to external vibrations, etc.
This also allows the biasing force of the return spring (not shown) to be weakened to the minimum necessary level.
この状態から励磁コイル2を付勢すると、第2図に示す
ように磁束φ11が透過され、可動鉄心10は磁性体3
4に吸引され図示左方向に、緩衝材6に当接するまで移
動される。When the exciting coil 2 is energized from this state, the magnetic flux φ11 is transmitted through the movable iron core 10 as shown in FIG.
4 and is moved to the left in the figure until it comes into contact with the cushioning material 6.
可動鉄心10が緩衝材6に当接したのちは励磁コイル2
の付勢を解いても第3図に示すように永久磁石5の磁束
φ□によりこの状態が保持される。After the movable iron core 10 contacts the buffer material 6, the excitation coil 2
Even if the bias is released, this state is maintained by the magnetic flux φ□ of the permanent magnet 5, as shown in FIG.
その後可動鉄心10を復帰させるには第4図に示すよう
に励磁コイル2にて上記磁束φ□1と逆方向の磁束φ1
゜を発生すると永久磁石5の磁束φ□が打消される間可
動鉄心10と磁性体4の間の吸着が解かれ、可動鉄心1
0は図示しないリターンスプリングにより復帰される。After that, in order to return the movable iron core 10, as shown in FIG.
When ゜ is generated, while the magnetic flux φ□ of the permanent magnet 5 is canceled out, the adsorption between the movable core 10 and the magnetic body 4 is released, and the movable core 1
0 is returned by a return spring (not shown).
したがって、このような構成によれば永久磁石5により
可動鉄心10の動作状態を確実に保持させることができ
これにより省電力を図ることができる。Therefore, according to such a configuration, the operating state of the movable iron core 10 can be reliably maintained by the permanent magnet 5, thereby making it possible to save power.
この場合、可動鉄心10は先端面中央部分にV字状溝部
101を形成し、この先端面周縁部分の磁束密度を高め
るようにしているので永久磁石5の磁束を有効に磁性体
4に透過することができ、しかも可動鉄心10は先端部
を磁性体4のエツジ近傍に位置決めされることからも磁
性体4との間に最大吸引力が得られ、この結果動作状態
での保持力を飛躍的に高めることができる。In this case, the movable iron core 10 has a V-shaped groove 101 formed in the center of the tip surface to increase the magnetic flux density at the peripheral edge of the tip surface, so that the magnetic flux of the permanent magnet 5 is effectively transmitted to the magnetic body 4. Moreover, since the tip of the movable core 10 is positioned near the edge of the magnetic body 4, maximum attractive force can be obtained between the movable core 10 and the magnetic body 4, and as a result, the holding force in the operating state can be dramatically increased. can be increased to
このことは動作保持カ一定とすると永久磁石を小形化で
きることでありその分ソレノイドの小形化を図ることも
できる。This means that if the operation holding force is constant, the permanent magnet can be made smaller, and the solenoid can also be made smaller accordingly.
また、可動鉄心10は緩衝材6にてその可動を受止めら
れるので消音効果を期待することができる。In addition, since the movable core 10 can be moved by the buffer material 6, a noise reduction effect can be expected.
この場合緩衝材6面にフィルム7を設けているので緩衝
材6にゴムなどを用いたとき熱および劣化により粘着性
が生じてもこの状態が可動鉄心10側に影響するのを確
実に防止でき、動作上の信頼性の向上をも図ることがで
きる。In this case, since the film 7 is provided on the side of the cushioning material 6, even if rubber or the like is used as the cushioning material 6, and even if it becomes sticky due to heat and deterioration, this state can be reliably prevented from affecting the movable iron core 10 side. , it is also possible to improve operational reliability.
更に、可動鉄心10が直接永久磁石5に衝突することも
ないので、これが原因する永久磁石5の劣化も防止でき
る。Furthermore, since the movable iron core 10 does not directly collide with the permanent magnet 5, deterioration of the permanent magnet 5 caused by this can be prevented.
更にまた、可動鉄心10を復帰する際励磁コイル2より
発生する磁束φ1゜は磁性体34を通り永久磁石5に透
過することがないので永久磁石5の不用な減磁も防止で
きる。Furthermore, since the magnetic flux φ1° generated by the excitation coil 2 when returning the movable iron core 10 does not pass through the magnetic body 34 to the permanent magnet 5, unnecessary demagnetization of the permanent magnet 5 can be prevented.
また、可動鉄心10に接続されるリターンスプリングの
偏倚力を弱めることができるので、それだけ励磁コイル
2の付勢時の可動鉄心10に作用する有効吸引力を高め
ることもできる。Further, since the biasing force of the return spring connected to the movable iron core 10 can be weakened, the effective attractive force acting on the movable iron core 10 when the excitation coil 2 is energized can be increased accordingly.
なお、この考案は上記実施例にのみ限定されず要旨を変
更しない範囲で適宜変形して実施できる。Note that this invention is not limited to the above-mentioned embodiments, but can be implemented with appropriate modifications without changing the gist.
例えば上述では可動鉄心10の先端を緩衝材6にて受止
めるようにしたが、例えば緩衝材6およびフレーム7を
省略して磁性材4の中空部周縁部にて直接受止めるよう
にしてもよい。For example, in the above description, the tip of the movable iron core 10 is received by the cushioning material 6, but the cushioning material 6 and the frame 7 may be omitted, and the tip of the movable iron core 10 may be directly received at the periphery of the hollow part of the magnetic material 4. .
この場合磁性体3を省くことができる。In this case, the magnetic body 3 can be omitted.
このようにすると消音効果の点では多少劣るが、動作保
持力を高めることは可能である。In this case, although the silencing effect is somewhat inferior, it is possible to increase the operation retention force.
この点磁性材4に制振鋼板のようなものを用いれば消音
効果についても解決できる。If a material such as a damping steel plate is used as the magnetic material 4, the silencing effect can also be solved.
以上、述べたようにこの考案に烏れば小形で、しかも充
分な動作保持力が得られる自己保持形のソレノイドを提
供できる。As described above, if this invention is applied, it is possible to provide a self-holding type solenoid which is small in size and has sufficient operation holding force.
【図面の簡単な説明】
第1図乃至第4図はこの考案の一実施例を不味第1図は
動作前の状態、第2図は動作状態、第3図は動作保持状
態、第4図は復帰状態を夫々示す概略的構成図である。
1・・・・・・ボビン、2・・・・・・励磁コイル、3
,4・・・磁性体、5・・・・・・永久磁石、6・・・
・・・緩衝材、7・・曲フィルム。
8・・・・・・フレーム、9・・・・・・フロントフレ
ーム、10・・・・・・可動鉄心、101・・曲溝。[Brief Description of the Drawings] Figures 1 to 4 show an embodiment of this invention. Figure 1 shows the state before operation, Figure 2 shows the operating state, Figure 3 shows the operation holding state, and The figures are schematic configuration diagrams showing respective return states. 1...Bobbin, 2...Excitation coil, 3
, 4... Magnetic material, 5... Permanent magnet, 6...
...Cushioning material, 7...Song film. 8...Frame, 9...Front frame, 10...Movable iron core, 101...Curved groove.
Claims (3)
の一方開口側に設けられるとともに上記ボビンの一方開
口に連通ずる中空部を有する磁性体と、この磁性体に一
方磁極面を設けた永久磁石と、上記励磁コイルを囲むよ
うに設けられ且つ上記永久磁石の他方磁極面が設けられ
るとともに上記ボビンの他方開口に連通ずる孔部を有す
るフレームと、このフレームの孔部を介して上記ボビン
の中空部に可動自在に挿通されるとともに先端面中央部
に溝部を形成した可動鉄心とを具備したことを特徴とす
るソレノイド。(1) A cylindrical bobbin around which an excitation coil is wound, a magnetic body provided on one opening side of the bobbin and having a hollow portion communicating with the one opening of the bobbin, and one magnetic pole surface provided on the magnetic body. a permanent magnet; a frame that is provided to surround the excitation coil and has a hole in which the other magnetic pole surface of the permanent magnet is provided and communicates with the other opening of the bobbin; What is claimed is: 1. A solenoid comprising: a movable iron core that is movably inserted into a hollow portion of the solenoid and has a groove formed in the center of a distal end surface.
受止める緩衝材を介挿したことを特徴とする実用新案登
録請求の範囲第1項記載のソレノイド。(2) The solenoid according to claim 1, which is a registered utility model, characterized in that a cushioning material for catching movement of the movable core is inserted in the hollow portion of the magnetic body.
溝部としたことを特徴とする実用新案登録請求の範囲第
1項又は第2項記載のソレノイド。(3) The solenoid according to claim 1 or 2, wherein the movable iron core has a groove in the center of the tip end face having a cross-sectional shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16879781U JPS6025861Y2 (en) | 1981-11-12 | 1981-11-12 | solenoid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16879781U JPS6025861Y2 (en) | 1981-11-12 | 1981-11-12 | solenoid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5872816U JPS5872816U (en) | 1983-05-17 |
JPS6025861Y2 true JPS6025861Y2 (en) | 1985-08-03 |
Family
ID=29960817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16879781U Expired JPS6025861Y2 (en) | 1981-11-12 | 1981-11-12 | solenoid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6025861Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0325371Y2 (en) * | 1985-03-06 | 1991-06-03 | ||
JP6439457B2 (en) * | 2015-01-20 | 2018-12-19 | 新電元メカトロニクス株式会社 | solenoid |
-
1981
- 1981-11-12 JP JP16879781U patent/JPS6025861Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5872816U (en) | 1983-05-17 |
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