JPH02222506A - Silent type electromagnet - Google Patents
Silent type electromagnetInfo
- Publication number
- JPH02222506A JPH02222506A JP1044433A JP4443389A JPH02222506A JP H02222506 A JPH02222506 A JP H02222506A JP 1044433 A JP1044433 A JP 1044433A JP 4443389 A JP4443389 A JP 4443389A JP H02222506 A JPH02222506 A JP H02222506A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- iron core
- magnetic
- movable iron
- piece
- 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.)
- Granted
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 113
- 239000011553 magnetic fluid Substances 0.000 claims abstract description 55
- 229910052742 iron Inorganic materials 0.000 claims abstract description 33
- 230000005284 excitation Effects 0.000 claims abstract description 8
- 239000010409 thin film Substances 0.000 claims description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 4
- 239000004744 fabric Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 230000002542 deteriorative effect Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920006221 acetate fiber Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Electromagnets (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、鉄心と可動鉄片との衝突音を低減した静音型
電磁石に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a silent electromagnet that reduces collision noise between an iron core and a movable iron piece.
［従来の技術］
従来、鉄心と可動鉄片との衝突音を低減したこの種の静
音型電磁石は、励磁コイルが巻装された鉄心に可動鉄片
を吸着自在にし、鉄心と可動鉄片の衝突部にＭ指部材を
配したものがあり、緩衝部材として非磁性体よりなるプ
ラスチックフィルム、ゴムあるいは油のような粘性流体
などを用いていた。[Prior Art] Conventionally, this type of silent electromagnet, which reduces the collision noise between an iron core and a movable iron piece, allows the movable iron piece to be freely attracted to the iron core around which an excitation coil is wound. There is one that is equipped with an M-finger member, and a plastic film made of a non-magnetic material, rubber, or a viscous fluid such as oil is used as a buffer member.
［発明が解決しようとする課題］
しかしながら、上述の従来例にあっては、磁路内に非磁
性体が介在することになるので、衝突音を低減するため
に磁気効率が悪くなってしまうという問題があった。[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, since a non-magnetic material is interposed in the magnetic path, magnetic efficiency deteriorates in order to reduce collision noise. There was a problem.
本発明は上記の点に鑑みて為されたものであり、その目
的とするところは、磁気効率を悪くすることなく衝突音
を低減することができる静音型電磁石を提供することに
ある。The present invention has been made in view of the above points, and an object thereof is to provide a silent electromagnet that can reduce collision noise without deteriorating magnetic efficiency.
［課題を解決するための手段］
本発明の静音型電磁石は、励磁コイルが巻装された鉄心
に可動鉄片を吸着自在にし、鉄心と可動鉄片の衝突部に
、フェライト、マグネタイトなどの微粉末を液体（有機
溶剤）中に均一に分散させた磁性流体を用いて形成され
る緩衝部材を配して衝突音を低減したものである。[Means for Solving the Problems] The silent electromagnet of the present invention allows a movable iron piece to be freely attracted to an iron core around which an excitation coil is wound, and injects fine powder such as ferrite or magnetite into the collision area between the iron core and the movable iron piece. Collision noise is reduced by disposing a buffer member formed using a magnetic fluid uniformly dispersed in a liquid (organic solvent).
［作 用］
本発明は上述のように構成されており、鉄心と可動鉄片
の衝突部に磁性流体を用いて形成される緩衝部材を配し
たので、磁気効率を悪くすることなく衝突音を低減する
ことができるようになっている。[Function] The present invention is configured as described above, and since a buffer member formed using magnetic fluid is arranged at the collision part between the iron core and the movable iron piece, collision noise can be reduced without deteriorating magnetic efficiency. It is now possible to do so.
［実施例］
第１図乃至第３図は本発明一実施例を示すもので、ムー
ビングループ型の電磁石において、励磁コイル２が巻装
された鉄心１の一端に可動鉄片３を吸着自在にし、鉄心
１と可動鉄片３の衝突部に磁性流体を用いて形成される
［部材４を配したものであり、本実施例では、一対の可
動鉄片３間に永久磁石５を設けた口字状のアーマチュア
６と、鉄心１の他端に口字状のヨーク７の中央片を取着
して８字状の固定磁路８を形成し、ラッチングタイプの
電磁石を形成している。また、磁性流体１１を用いて形
成されるｗ階部材４は、鉄心１の一端に被嵌される薄い
金属薄膜よりなる箱体１０で磁性流体１１を覆って配設
され、箱体１０内に適当量の磁性流体１１を入れ箱体ｌ
Ｏ内面と鉄心１の一端部側面との間に適当なギャップを
設けて磁性流体１１を介在させて形成されている。なお
、磁性流体１１は永久磁石５によって箱体１０の奥部に
引き寄せられ、外部への流出が阻止されるようになって
いる。また、箱体１０は合成樹脂薄膜で形成しても良い
。[Embodiment] Figures 1 to 3 show an embodiment of the present invention, in which a movable iron piece 3 is freely attracted to one end of an iron core 1 around which an excitation coil 2 is wound in a moving loop type electromagnet. A member 4 is formed using magnetic fluid at the collision part between the iron core 1 and the movable iron piece 3. In this embodiment, a permanent magnet 5 is provided between the pair of movable iron pieces 3. The armature 6 and the center piece of a mouth-shaped yoke 7 are attached to the other end of the iron core 1 to form a fixed magnetic path 8 shaped like a figure 8, thereby forming a latching type electromagnet. Further, the w-th floor member 4 formed using the magnetic fluid 11 is arranged so as to cover the magnetic fluid 11 with a box 10 made of a thin metal film that is fitted onto one end of the iron core 1, and is placed inside the box 10. Put an appropriate amount of magnetic fluid 11 into the box l.
A suitable gap is provided between the O inner surface and the side surface of one end of the iron core 1, and a magnetic fluid 11 is interposed therebetween. The magnetic fluid 11 is attracted to the inner part of the box body 10 by the permanent magnet 5, and is prevented from flowing out to the outside. Further, the box body 10 may be formed of a synthetic resin thin film.
いま、励磁コイル２に通電されて鉄心１が励磁され、可
動鉄片３が鉄心１に吸着される際、第２図および第３図
に示すように磁性流体１１の粘性および移動によって衝
撃が吸収され、動作時の衝撃音の低減が図れるようにな
っている。この際、磁性流体１１によって磁路が確保さ
れるので、非磁性体の緩衝部材を用いた従来例のように
磁気効率が低下することはない。Now, when the excitation coil 2 is energized to excite the iron core 1 and the movable iron piece 3 is attracted to the iron core 1, the impact is absorbed by the viscosity and movement of the magnetic fluid 11, as shown in FIGS. 2 and 3. It is designed to reduce impact noise during operation. At this time, since the magnetic path is secured by the magnetic fluid 11, the magnetic efficiency does not deteriorate as in the conventional example using a non-magnetic buffer member.
第４図は他の実施例を示すもので、磁性流体１１を薄い
金８Ｃ薄膜よりなり開口部を絞り込んだ箱体１０°に入
れ、箱体１０゛の開口部を鉄心１に溶着あるいは接着す
ることにより、磁性流体１１を密封状態で配設するよう
にしたものであり、磁性流体１１の溶剤の蒸発による変
質（特性の経時変化）が防止できるようになっている。FIG. 4 shows another embodiment, in which a magnetic fluid 11 is placed in a box 10° made of a thin 8C gold film with a narrowed opening, and the opening of the box 10° is welded or glued to the iron core 1. As a result, the magnetic fluid 11 is disposed in a sealed state, and deterioration (change in characteristics over time) of the magnetic fluid 11 due to evaporation of the solvent can be prevented.
なお、箱体１０は薄膜で形成されているので、可動鉄片
３の吸着時に容易に変形する。Note that since the box body 10 is formed of a thin film, it is easily deformed when the movable iron piece 3 is attracted.
第５図は、樹脂薄膜よりなる袋体１０ａによって磁性流
体１１を鉄心１の一端に密封状態で配設して緩衝部材４
としたものである。FIG. 5 shows a buffer member 4 in which a magnetic fluid 11 is sealed at one end of the iron core 1 using a bag body 10a made of a thin resin film.
That is.
第６図はさらに他の実施例を示すもので、励磁コイル２
のコイル枠２ａに突壁１２を設け、突壁１２に箱体１０
の開口部を圧接あるいは接着して磁性流体１１を密封状
態で配設するようにしたものであり、前記実施例と同様
の効果を奏する。FIG. 6 shows still another embodiment, in which the exciting coil 2
A projecting wall 12 is provided on the coil frame 2a, and a box body 10 is provided on the projecting wall 12.
The magnetic fluid 11 is disposed in a sealed state by pressing or bonding the opening of the magnetic fluid 11, and the same effect as in the previous embodiment is achieved.
第７図および第８図はさらに他の実施例を示すもので、
ケイ素鋼板（あるいは電磁鉄板）を積層した８字状の固
定鉄心１゛の脚片の端面近傍に凹所１３を設け、この凹
所１３に磁性流体１１を布、綿、スポンジ等に含侵させ
た含侵部材１４を配置し、８字状の可動鉄心（鉄片）３
“が衝突する固定鉄心１の脚片端面に、磁性流体１１が
ケイ素鋼板間の毛細管現象によってしみ出すようにして
緩衝部材４としたものである。FIG. 7 and FIG. 8 show still other embodiments,
A recess 13 is provided near the end face of the leg of a fixed iron core 1'' shaped like an 8 made of laminated silicon steel plates (or electromagnetic iron plates), and a cloth, cotton, sponge, etc. is impregnated with magnetic fluid 11 in this recess 13. The movable iron core (iron piece) 3 is arranged in a figure-8 shape.
The buffer member 4 is made such that the magnetic fluid 11 seeps out by capillary action between the silicon steel plates onto the end face of one leg of the fixed iron core 1 that collides with the magnetic fluid 11.
いま、本実施例にあっては、緩衝部材４として油のよう
な非磁性粘性流体の代わりに磁性流体１１を用いたもの
であり、磁気効率を低下させることなく衝撃音を低減で
きるようになっている。In this embodiment, a magnetic fluid 11 is used as the buffer member 4 instead of a non-magnetic viscous fluid such as oil, and impact noise can be reduced without reducing magnetic efficiency. ing.
第９図および第１０図はさらに他の実施例を示すもので
、Ｌ字状のヨーク７ａの上端に可動鉄片（図示せず）の
一端をヒンジ結合し、可動鉄片の他端を励磁コイル２が
巻装された積層型の鉄心１°の一端に吸着自在にしたヒ
ンジ型の電磁石において、磁性流体１１を含侵したシー
ト状の含侵部材１４ａ°を、鉄心１°の一端に形成され
たフランジ部１ａとコイル枠２ａとの間に配置し、積層
型の鉄心１°のケイ素鋼板間の毛細管現象によって磁性
流体１１を鉄心１′の端面にしみ出させることにより緩
衝部材４としたものであり、前記実施例と同様の効果を
奏する。9 and 10 show still another embodiment, in which one end of a movable iron piece (not shown) is hinged to the upper end of an L-shaped yoke 7a, and the other end of the movable iron piece is connected to an exciting coil 2. In this hinge-type electromagnet, a sheet-shaped impregnated member 14a impregnated with magnetic fluid 11 is formed at one end of the iron core 1°, which is capable of adhering to one end of a laminated iron core 1° wound with magnetic fluid 11. It is arranged between the flange portion 1a and the coil frame 2a, and the buffer member 4 is made by causing the magnetic fluid 11 to seep out to the end face of the iron core 1' by capillary action between the silicon steel plates of the laminated iron core with an angle of 1°. This embodiment has the same effect as the embodiment described above.
第１１図乃至第１５図はさらに他の実施例を示すもので
、バランスアーマチュア型の電磁石において、励磁コイ
ル２が巻装された口字状の鉄心１と、Ｈ字状の永久磁石
５を具備したアーマチュア１８の可動鉄片３との間に配
設されるレシジュアルプレート１６に複数の孔１７を穿
設して磁性流体１１を含侵保持させて緩衝部材４とした
ものである。FIGS. 11 to 15 show still another embodiment, which is a balanced armature electromagnet that includes an opening-shaped iron core 1 around which an exciting coil 2 is wound and an H-shaped permanent magnet 5. A plurality of holes 17 are bored in the residual plate 16 disposed between the armature 18 and the movable iron piece 3, and the magnetic fluid 11 is impregnated and held therein to form the shock absorbing member 4.
実施例では、鉄心１の衝突部に磁性流体１１を含侵した
レシジュアルプレート１６を配設しており、可動鉄片３
が鉄心１に衝突する前は、第１３図（ａ）に示すように
、磁性流体１１がレシジュアルプレート１６の両側に存
在している。この状態で可動鉄片３が鉄心１に吸着され
る際、磁性流体１１を押し退けるようにして第１３図（
ｂ）に示すように吸着され、磁性流体１１の粘性によっ
て衝撃が吸収され衝撃音が低減される。このとき、磁性
流体１１は、第１５図に示すようにレシジュアルプレー
ト１６の周りおよび孔１７内に存在しているので、磁路
が確保されることになり、磁気効率を悪くすることがな
い。In the embodiment, a residual plate 16 impregnated with magnetic fluid 11 is disposed at the collision part of the iron core 1, and the movable iron piece 3
Before colliding with the iron core 1, the magnetic fluid 11 exists on both sides of the residual plate 16, as shown in FIG. 13(a). When the movable iron piece 3 is attracted to the iron core 1 in this state, the magnetic fluid 11 is pushed away as shown in FIG.
As shown in b), the impact is absorbed by the viscosity of the magnetic fluid 11 and the impact noise is reduced. At this time, since the magnetic fluid 11 exists around the regular plate 16 and in the hole 17 as shown in FIG. 15, a magnetic path is secured and the magnetic efficiency is not deteriorated. .
第１６図および第１７図はさらに他の実施例を示すもの
で、布（ガラス繊維布、アセテート繊維布、不織布）、
紙などでレシジュアルプレート１６°を形成して磁性流
体１１を含侵させてＭ術部材４としたものである。FIGS. 16 and 17 show still other embodiments, including cloth (glass fiber cloth, acetate fiber cloth, non-woven cloth),
A residual plate 16° is formed of paper or the like and impregnated with a magnetic fluid 11 to obtain an M surgical member 4.
第１８図および第１９図はさらに他の実施例を示すもの
で、ムービングループ型の電磁石の鉄心１の衝突部に磁
性流体１１を含侵したレシジュアルプレート１６を配設
したものである。FIGS. 18 and 19 show still another embodiment, in which a residual plate 16 impregnated with a magnetic fluid 11 is disposed at the collision part of the iron core 1 of a moving loop electromagnet.
第２０図および第２１図はさらに他の実施例を示すもの
で、４ギヤツプソレノイドの電磁石において、接極子（
可動鉄片）３”の衝突面に磁性流体１１を含侵したレシ
ジュアルプレート１６を取着したものであり、２１はマ
グネットヨーク、２２は永久磁石、２３はプランジャ、
２４は主ヨークである。FIGS. 20 and 21 show still another embodiment, in which the armature (
A residual plate 16 impregnated with magnetic fluid 11 is attached to the impact surface of a movable iron piece) 3'', 21 is a magnetic yoke, 22 is a permanent magnet, 23 is a plunger,
24 is the main yoke.
第２２図はさらに他の実施例を示すもので、ヒンジ型の
電磁石において、Ｌ字状の可動鉄片３が衝突する鉄心１
の衝突部に磁性流体１１を含侵したレシジュアルプレー
ト１６を配設したものである。FIG. 22 shows still another embodiment, in which an L-shaped movable iron piece 3 collides with an iron core 1 in a hinge-type electromagnet.
A residual plate 16 impregnated with a magnetic fluid 11 is disposed at the collision part of the magnetic fluid 11.
第２３図乃至第２７図はさらに他の実施例を示すもので
、バランスアーマチュア型の電磁石において、鉄心１の
可動鉄片３衝突面に凹部２５を設け、上記凹部２５に磁
性流体１１を含侵した含侵部材１４を配置して緩衝部材
４としたものである。23 to 27 show still another embodiment, in which a balanced armature electromagnet is provided with a recess 25 on the collision surface of the movable iron piece 3 of the iron core 1, and the recess 25 is impregnated with a magnetic fluid 11. The impregnated member 14 is arranged to form a buffer member 4.
いま、可動鉄片３が吸着されていない場合には、第２６
図に示すように、含侵部材１１に含侵されている磁性流
体１１によって鉄心１の衝突面が覆われおり、この状態
で可動鉄片３が鉄心１に吸着されると、第２７図に示す
ように、磁性流体１１が衝突面から押し退けられること
になり、磁性流体１１の粘性によって衝撃が吸収されて
衝撃音の低減が図れる。また、磁性流体１１が凹部２５
内に存在するので、鉄心１に凹部２５を形成したことに
よる磁気効率の低下を防止できる。なお、本実施例では
鉄心１の衝突面に凹部２５を設けているが、可動鉄片３
の衝突面に凹部を設けて、磁性流体１１を含侵した含侵
部材を配しても良い、また、本実施例の構成を前述した
ヒンジ型電磁石、ムービングループ型電磁石および４ギ
ヤツプ型ソレノイドの電磁石に適用しても良いことは言
うまでもない。If the movable iron piece 3 is not attracted now, the 26th
As shown in the figure, the collision surface of the iron core 1 is covered with the magnetic fluid 11 impregnated in the impregnation member 11, and when the movable iron piece 3 is attracted to the iron core 1 in this state, as shown in FIG. As such, the magnetic fluid 11 is pushed away from the collision surface, and the impact is absorbed by the viscosity of the magnetic fluid 11, thereby reducing impact noise. Moreover, the magnetic fluid 11 is
Since the recess 25 is present in the core 1, a decrease in magnetic efficiency due to the formation of the recess 25 in the iron core 1 can be prevented. In this embodiment, the recess 25 is provided on the collision surface of the iron core 1, but the movable iron piece 3
A concave portion may be provided in the collision surface of the magnetic fluid 11, and an impregnated member impregnated with the magnetic fluid 11 may be disposed therein. Needless to say, it can also be applied to electromagnets.
［発明の効果］
本発明は上述のように構成されており、鉄心と可動鉄片
の衝突部に磁性流体を用いて形成される！！部材を配し
たので、磁気効率を悪くすることなく衝突音を低減する
ことができるという効果がある。[Effects of the Invention] The present invention is configured as described above, and the collision portion between the iron core and the movable iron piece is formed using a magnetic fluid! ! Since the members are arranged, there is an effect that collision noise can be reduced without deteriorating magnetic efficiency.
第１図は本発明一実施例の分解斜視図、第２図（ａ）（
ｂ）は同上の動作状態を示す断面図、第３図（ａ）（ｂ
）（ｃ）は同上の動作状態を示す要部拡大断面図、第４
図（ａ）は他の実施例の要部斜視図、第４図（ｂ）は同
上の要部断面図、第５図はさらに他の実施例の要部断面
図、第６図（ａ）はさらに他の実施例の分解斜視図、第
６図（ｂ）は同上の要部断面図、第７図はさらに他の実
施例の斜視図、第８図は同上の要部斜視図、第９図はさ
らに他の実施例の要部斜視図、第１０図は同上の要部断
面図、第１１図はさらに他の実施例の斜視図、第１２図
は同上の要部分解斜視図、第１３図（ａ）（ｂ）は同上
の動作説明図、第１４図は同上の要部拡大斜視図、第１
５図は同上の要部断面図、第１６図はさらに他の実施例
の要部斜視図、第１７図は同上の要部断面図、第１８図
はさらに他の実施例の斜視図、第１９図は同上の要部分
解斜視図、第２０図はさらに他の実施例の斜視図、第２
１図は同上の要部斜視図、第２２図はさらに他の実施例
の斜視図、第２３図はさらに他の実施例の斜視図、第２
４図は同上の要部斜視図、第２５図は同上の要部斜視図
、第２６図は同上の要部断面図、第２７図は同上の動作
説明図である。
１．１゛は鉄心、２は励磁コイル、３，３°は可動鉄片
、４は緩衝部材、１０．１０’は箱体、１１は磁性流体
、１３は凹所、１４は含侵部材、１６はレシジュアルプ
レート、１７は孔、２５は凹部である。
代理人 弁理士 石 １）長 七
第１図
第３図
（ｂ） （ｃ）
簿２図
（ｂ）
第７ｖＩｊ
第８閲
第９図
第１０図
第１４図
第１６図
第２０図
第２１図
第旧図
第１９１’
第２２図
第２３図Figure 1 is an exploded perspective view of one embodiment of the present invention, and Figure 2 (a) (
b) is a sectional view showing the operating state of the same as above, and Fig. 3(a)(b)
)(c) is an enlarged sectional view of the main part showing the operating state of the same as above,
Figure (a) is a perspective view of the main part of another embodiment, Figure 4 (b) is a sectional view of the main part of the same as above, Figure 5 is a sectional view of the main part of still another embodiment, and Figure 6 (a). 6(b) is an exploded perspective view of still another embodiment, FIG. 6(b) is a sectional view of the essential parts of the same, FIG. 9 is a perspective view of a main part of still another embodiment, FIG. 10 is a sectional view of a main part same as above, FIG. 11 is a perspective view of still another embodiment, FIG. 12 is an exploded perspective view of main part same as above, 13(a) and 13(b) are explanatory diagrams of the same operation as above, FIG. 14 is an enlarged perspective view of the main parts of the same as above, and
5 is a sectional view of the main parts of the same as the above, FIG. 16 is a perspective view of the main parts of another embodiment, FIG. 17 is a sectional view of the main parts of the same, and FIG. 18 is a perspective view of still another embodiment. FIG. 19 is an exploded perspective view of the same essential parts, FIG. 20 is a perspective view of still another embodiment, and FIG.
1 is a perspective view of the same essential parts as above, FIG. 22 is a perspective view of still another embodiment, FIG. 23 is a perspective view of still another embodiment, and FIG.
4 is a perspective view of the same essential parts as above, FIG. 25 is a perspective view of essential parts same as above, FIG. 26 is a sectional view of essential parts same as above, and FIG. 27 is an explanatory view of the same as above. 1.1゛ is an iron core, 2 is an excitation coil, 3,3° is a movable iron piece, 4 is a buffer member, 10.10' is a box, 11 is a magnetic fluid, 13 is a recess, 14 is an impregnated member, 16 1 is a residual plate, 17 is a hole, and 25 is a recess. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 Figure 3 (b) (c) Book 2 Figure 2 (b) Figure 7 vIj Figure 8 Figure 9 Figure 10 Figure 14 Figure 16 Figure 20 Figure 21 Old Figure 191' Figure 22 Figure 23
Claims (5)
吸着自在にし、鉄心と可動鉄片の衝突部に磁性流体を用
いて形成される緩衝部材を配して成る静音型電磁石。(1) A silent electromagnet in which a movable iron piece is freely attracted to one end of an iron core around which an excitation coil is wound, and a buffer member made of magnetic fluid is arranged at the collision part between the iron core and the movable iron piece.
衝部材としたことを特徴とする請求項１記載の静音型電
磁石。(2) A silent electromagnet according to claim 1, characterized in that the magnetic fluid is covered with a thin film and attached to one end of the iron core to serve as a buffer member.
を設け、鉄心の一端にしみ出した磁性流体を緩衝部材と
したことを特徴とする請求項１記載の静音型電磁石。(3) The silent electromagnet according to claim 1, characterized in that impregnated members impregnated with magnetic fluid are provided at key points of the laminated core, and the magnetic fluid seeping out from one end of the core is used as a buffer member.
衝部材としたことを特徴とする請求項１記載の静音型電
磁石。(4) The silent electromagnet according to claim 1, characterized in that the residual plate is impregnated with a magnetic fluid to serve as a buffer member.
記凹部に磁性流体を含侵した含侵部材を配置して緩衝部
材としたことを特徴とする請求項１記載の静音型電磁石
。(5) The silent electromagnet according to claim 1, wherein a recess is provided in the collision surface of the iron core or the movable iron piece, and an impregnated member impregnated with a magnetic fluid is placed in the recess to serve as a buffer member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1044433A JP2634457B2 (en) | 1989-02-23 | 1989-02-23 | Silent electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1044433A JP2634457B2 (en) | 1989-02-23 | 1989-02-23 | Silent electromagnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02222506A true JPH02222506A (en) | 1990-09-05 |
| JP2634457B2 JP2634457B2 (en) | 1997-07-23 |
Family
ID=12691361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1044433A Expired - Fee Related JP2634457B2 (en) | 1989-02-23 | 1989-02-23 | Silent electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2634457B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5896948U (en) * | 1981-12-23 | 1983-07-01 | 沖電気工業株式会社 | dot printing head |
| JPS6039805A (en) * | 1983-08-15 | 1985-03-01 | Takahashi Shojiro | Silent ac solenoid |
| JPS6186905U (en) * | 1984-11-14 | 1986-06-07 |
-
1989
- 1989-02-23 JP JP1044433A patent/JP2634457B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5896948U (en) * | 1981-12-23 | 1983-07-01 | 沖電気工業株式会社 | dot printing head |
| JPS6039805A (en) * | 1983-08-15 | 1985-03-01 | Takahashi Shojiro | Silent ac solenoid |
| JPS6186905U (en) * | 1984-11-14 | 1986-06-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2634457B2 (en) | 1997-07-23 |
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