JPH0642423B2 - Monostable electromagnet - Google Patents
Monostable electromagnetInfo
- Publication number
- JPH0642423B2 JPH0642423B2 JP1340003A JP34000389A JPH0642423B2 JP H0642423 B2 JPH0642423 B2 JP H0642423B2 JP 1340003 A JP1340003 A JP 1340003A JP 34000389 A JP34000389 A JP 34000389A JP H0642423 B2 JPH0642423 B2 JP H0642423B2
- Authority
- JP
- Japan
- Prior art keywords
- armature
- permanent magnet
- yoke
- magnetic flux
- contacting
- 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
- 230000004907 flux Effects 0.000 claims description 37
- 238000000926 separation method Methods 0.000 claims description 9
- 230000005284 excitation Effects 0.000 claims description 7
- 230000005415 magnetization Effects 0.000 claims description 4
- 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 description 25
- 230000000694 effects Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Electromagnets (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、３相モーターの開閉用の電磁接触器や電磁
継電器などに適用される単安定電磁石に関するものであ
る。TECHNICAL FIELD The present invention relates to a monostable electromagnet applied to an electromagnetic contactor for opening and closing a three-phase motor, an electromagnetic relay, or the like.
従来のこの種の単安定電磁石として、クラッパ形電磁石
などの磁気回路中に永久磁石を含まない、いわゆる無極
型の電磁石が一般的であった。この無極型の電磁石は低
コストではあるが、コイルの発生磁束しかアーマチュア
の駆動力に利用できないため、ある吸引力幅を得るため
に消費電力を大きくする必要があった。As a conventional monostable electromagnet of this type, a so-called non-polar type electromagnet, which does not include a permanent magnet in a magnetic circuit, such as a clapper type electromagnet, has been generally used. Although this non-polar type electromagnet is low in cost, only the magnetic flux generated by the coil can be used for the driving force of the armature, so it was necessary to increase the power consumption to obtain a certain attractive force width.
これに対して、近年電磁石の低消費電力化のため磁気回
路中に永久磁石を含ませた有極電磁石装置が提案されて
いる（例えば特公昭62−17333号、実公昭58−10327
号）。On the other hand, in recent years, there has been proposed a polar electromagnet device including a permanent magnet in a magnetic circuit in order to reduce the power consumption of the electromagnet (for example, Japanese Patent Publication No. 62-17333 and Japanese Utility Model Publication No. 58-10327).
issue).
特公昭62−17333号の単安定電磁石は、永久磁石の磁束
もアーマチュアの駆動力に利用できるので、ある吸引力
幅を得るときに無極型に比べて低消費電力にすることが
できる。しかし、双安定用の電磁石構造であるため、一
般的な電磁接触器などの片寄ったばね負荷には不向きで
あった。In the monostable electromagnet of Japanese Examined Patent Publication No. 62-17333, since the magnetic flux of the permanent magnet can also be used for the driving force of the armature, it is possible to reduce the power consumption compared to the non-polar type when obtaining a certain attractive force width. However, since it is a bistable electromagnet structure, it is not suitable for a biased spring load such as a general electromagnetic contactor.
また、実公昭58−10327号の単安定電磁石は、無極型と
有極型の前記従来例との中間的な特性、すなわち有極で
あるため低消費電力が図れ、前記従来例と異なり非対称
の磁気回路であるため片寄ったばね負荷に適した特性を
有している。In addition, the monostable electromagnet of Japanese Utility Model Publication No. 58-10327 has an intermediate characteristic between the non-polar type and the polar type of the conventional example, that is, it has low power consumption because it is polar, and is asymmetrical unlike the conventional example. Since it is a magnetic circuit, it has characteristics suitable for biased spring loads.
しかし、アーマチュアの復帰側において永久磁石の磁束
が閉ループを流れる構成であるため復帰方向への力が非
常に大きくなり、そのためばね負荷との整合においてア
ーマチュアを動作側に付勢する動作ばねが必要になるな
どの欠点を有していた。However, since the magnetic flux of the permanent magnets flows through the closed loop on the return side of the armature, the force in the return direction becomes extremely large.Therefore, an operating spring that biases the armature toward the operating side is required to match the spring load. It had a drawback such as
したがって、この発明の目的は、動作ばねを必要とする
ことなく片寄ったばね負荷に適用できる有極の単安定電
磁石を提供することである。Therefore, it is an object of the present invention to provide a polarized monostable electromagnet that can be applied to biased spring loads without the need for a working spring.
請求項(1)の単安定電磁石は、ヨークと、このヨークに
接離動作可能な接離部を有するアーマチュアと、前記ヨ
ークおよび前記アーマチュアの少なくともいずれか一方
に巻装されて励磁により前記アーマチュアを前記ヨーク
に吸引させるコイルと、前記アーマチュアの接離部の近
傍に配置されて磁化方向が前記アーマチュアの移動方向
とほぼ垂直である永久磁石とを備えたものである。The monostable electromagnet according to claim (1) is provided with a yoke, an armature having a contacting / separating portion capable of contacting / separating with the yoke, and at least one of the yoke and the armature, and the armature is excited to excite the armature. The coil includes a coil to be attracted to the yoke, and a permanent magnet that is disposed near a contacting / separating portion of the armature and has a magnetization direction substantially perpendicular to a moving direction of the armature.
請求項(2)の単安定電磁石は、請求項(1)において、前記
永久磁石を前記アーマチュアおよび前記ヨークの少なく
とも一方に固定し、その他方に対面する前記永久磁石の
磁極の前記接離部の移動方向と同方向の長さを、前記接
離部の移動範囲以上としたものである。The monostable electromagnet according to claim (2) is such that, in claim (1), the permanent magnet is fixed to at least one of the armature and the yoke, and the contact and separation portion of the magnetic pole of the permanent magnet facing the other side. The length in the same direction as the moving direction is set to be equal to or greater than the moving range of the contacting / separating portion.
請求項(3)の単安定電磁石は、請求項(1)において、前記
永久磁石は磁極に集磁板を設けたものである。A monostable electromagnet according to claim (3) is the monostable electromagnet according to claim (1), wherein the permanent magnet is provided with a magnetic flux collecting plate on its magnetic pole.
請求項(1)の単安定電磁石によれば、コイルを励磁する
とアーマチュアの接離部がヨークに吸着されるように動
作する。この場合、コイルの励磁による磁束は、永久磁
石を含まないで、ヨークおよびアーマチュアによる閉磁
路を形成することができる。さらに永久磁石により発生
する磁束を前記コイルによる磁束に重畳させることがで
きるのでアーマチュアの吸引力を増大でき、したがって
消費電力を低減できる。一方アーマチュアの復帰位置に
おいては、永久磁石の磁束が閉ループを作らない構成と
なり、アーマチュアの復帰方向には永久磁石の磁束はほ
とんど作用しないので、従来のような動作ばねを必要と
することなく片寄ったばね負荷に適用でき、ばね負荷と
整合しやすい吸引力特性が得られる。According to the monostable electromagnet of claim (1), when the coil is excited, the contact and separation parts of the armature are attracted to the yoke. In this case, the magnetic flux generated by the excitation of the coil does not include the permanent magnet and can form a closed magnetic circuit by the yoke and the armature. Further, since the magnetic flux generated by the permanent magnet can be superposed on the magnetic flux generated by the coil, the attractive force of the armature can be increased, and therefore the power consumption can be reduced. On the other hand, in the armature return position, the magnetic flux of the permanent magnet does not form a closed loop, and the magnetic flux of the permanent magnet hardly acts in the armature return direction. Applicable to the load, the attraction force characteristics that are easily matched with the spring load are obtained.
請求項(2)の単安定電磁石によれば、請求項(1)の永久磁
石の磁極の前記接離部の移動方向と同方向の長さを、前
記接離部の移動範囲以上としたため、アーマチュアの接
離部の移動範囲の全体に永久磁石の磁束が作用するの
で、請求項(1)の作用とともに、移動範囲の全体におい
て効率的にアーマチュアの吸引力を増大することができ
る。According to the monostable electromagnet of claim (2), since the length of the magnetic pole of the permanent magnet of claim (1) in the same direction as the moving direction of the contacting / separating portion is equal to or more than the moving range of the contacting / separating portion, Since the magnetic flux of the permanent magnet acts on the entire moving range of the contacting / separating portion of the armature, the attraction force of the armature can be efficiently increased in the entire moving range in addition to the action of claim (1).
請求項(3)の単安定電磁石によれば、前記永久磁石は磁
極に集磁板を設けているため、永久磁石より発生する磁
束をアーマチュアまたはヨークに洩れなく集めることが
できるので、より一層効率がよくなりコイルの励磁時の
アーマチュアの吸引力が向上する。According to the monostable electromagnet of claim (3), since the permanent magnet is provided with a magnetic flux collector plate, the magnetic flux generated by the permanent magnet can be collected without leaking to the armature or the yoke. Improves the attraction force of the armature when the coil is excited.
この発明の第１の実施例を第１図ないし第３図に基づい
て説明する。すなわち、この単安定電磁石は、ヨーク１
と、コイル２と、アーマチュア３と、永久磁石４とを有
する。A first embodiment of the present invention will be described with reference to FIGS. That is, this monostable electromagnet is composed of the yoke 1
A coil 2, an armature 3 and a permanent magnet 4.
ヨーク１は平板を略コ字形に折曲形成している。コイル
２はヨーク１の一片に巻装されている。アーマチュア３
はヨーク１の一端部６の板端面に磁気結合される枢支部
５を有するとともに、揺動によりヨーク１の他端部８の
板端面に接離する接離部７を有する。そして、接離部７
はコイル２の励磁によりヨーク１に吸着される。無励磁
時は復帰ばね（図示せず）などにより復帰位置に戻る。
なお一端部６と枢支部５の枢支手段は、公知のヒンジ手
段を適用する。The yoke 1 is formed by bending a flat plate into a substantially U shape. The coil 2 is wound around a piece of the yoke 1. Armature 3
Has a pivot portion 5 that is magnetically coupled to the plate end surface of one end portion 6 of the yoke 1, and has a contacting / separating portion 7 that contacts and separates from the plate end surface of the other end portion 8 of the yoke 1 by swinging. And the contact / separation part 7
Is attracted to the yoke 1 by exciting the coil 2. When there is no excitation, the return spring (not shown) returns to the return position.
A well-known hinge means is applied to the pivot means of the one end portion 6 and the pivot portion 5.
永久磁石４はヨーク１の他端部８に固定されて接離部７
の近傍に配置されている。すなわち、永久磁石４は一対
を実施例とし、略コ字形の補助ヨーク９の両端部の内側
面に磁極Ｓが磁気結合されて固定され、中央部に孔１０
を形成してヨーク１の他端部８に嵌着している。また永
久磁石４の磁化方向は接離部７の移動方向とほぼ垂直で
あり、永久磁石４の磁極Ｎがアーマチュア３の側部に対
面し、かつ磁極Ｎの接離部７の移動方向と同方向の長さ
は接離部７の移動範囲よりも長く形成している。The permanent magnet 4 is fixed to the other end 8 of the yoke 1 and is brought into contact with or separated from the other end 7.
It is located near. That is, a pair of permanent magnets 4 is used as an example, the magnetic poles S are magnetically coupled and fixed to the inner side surfaces of both ends of the substantially U-shaped auxiliary yoke 9, and the hole 10 is formed in the central portion.
And is fitted to the other end 8 of the yoke 1. Further, the magnetization direction of the permanent magnet 4 is substantially perpendicular to the moving direction of the contacting / separating portion 7, the magnetic pole N of the permanent magnet 4 faces the side portion of the armature 3 and is the same as the moving direction of the contacting / separating portion 7 of the magnetic pole N. The length in the direction is formed longer than the moving range of the contact / separation portion 7.
この実施例によれば、第３図(a)に示すように、電磁石
の復帰状態において、永久磁石４の磁化力により磁束Φ
１はアーマチュア３、ヨーク１および補助ヨーク９を経
由して流れるが、磁気回路が粗なる結合であるのでアー
マチュア３を復帰方向に吸引する力はほとんど作用しな
い。一方、一部の磁束Φ２はアーマチュア３および補助
ヨーク９を経由して流れるが、この磁束Φ２はアーマチ
ュア３をほぼ垂直に通過する磁束であり、かつ磁気回路
も粗なる結合であるのでアーマチュア３を復帰方向に吸
引する力はほとんど作用しない。従ってアーマチュア３
を復帰方向に吸引する力はほとんど作用しないので、従
来のような動作ばねを必要とすることなく片寄ったばね
負荷に適用できる。According to this embodiment, as shown in FIG. 3 (a), the magnetic flux Φ is generated by the magnetizing force of the permanent magnet 4 in the return state of the electromagnet.
1 flows through the armature 3, the yoke 1 and the auxiliary yoke 9, but since the magnetic circuit is a coarse coupling, almost no force acts to attract the armature 3 in the returning direction. On the other hand, a part of the magnetic flux Φ 2 flows through the armature 3 and the auxiliary yoke 9, but this magnetic flux Φ 2 is a magnetic flux that passes through the armature 3 almost vertically, and the magnetic circuit is also a coarse coupling. The force of attracting 3 in the returning direction hardly acts. Therefore armature 3
Since almost no force acts to attract in the return direction, it can be applied to a biased spring load without the need for a conventional operating spring.
ついで、コイル２を励磁すると、アーマチュア３の枢支
部５を中心に接離部７がヨーク１の他端部８に吸着され
るようにアーマチュア３が動作する。第３図(b)に示す
ようにコイル２の励磁により発生した磁束Φ３は前述の
磁束Φ１とは逆方向に流れるように構成されており、永
久磁石４を含まないでヨーク１およびアーマチュア３に
よる閉磁路を流れるとともに、永久磁石４により発生す
る磁束Φ２をコイル２の励磁により発生する磁束Φ３に
重畳させることになる。したがってコイル２の起磁力を
増加するに従いヨーク１とアーマチュア３の間に生じる
吸引力が増大する一方、永久磁石４の磁束Φ２によりア
ーマチュア３の動作側への吸引力を増大できるため、コ
イル２の消費電力を低減できる。Then, when the coil 2 is excited, the armature 3 operates so that the contact / separation portion 7 is attracted to the other end portion 8 of the yoke 1 around the pivotal support portion 5 of the armature 3. As shown in FIG. 3 (b), the magnetic flux Φ 3 generated by the excitation of the coil 2 is configured to flow in the opposite direction to the above-mentioned magnetic flux Φ 1 , and the permanent magnet 4 is not included in the yoke 1 and the armature. The magnetic flux Φ 2 generated by the permanent magnet 4 is superposed on the magnetic flux Φ 3 generated by the excitation of the coil 2 while flowing through the closed magnetic circuit of 3 . Therefore, as the magnetomotive force of the coil 2 increases, the attractive force generated between the yoke 1 and the armature 3 increases, while the magnetic flux Φ 2 of the permanent magnet 4 increases the attractive force of the armature 3 toward the operating side. Power consumption can be reduced.
また永久磁石の磁極４の長さをアーマチュア３の接離部
７の移動範囲以上としているため、アーマチュア３の接
離部７の移動範囲の全体に永久磁石４の磁束Φ２が作用
するので、効率的にアーマチュア３の吸引力を増大する
ことができ、消費電力を低減できる。Further, since the length of the magnetic pole 4 of the permanent magnet is set to be equal to or longer than the moving range of the contacting / separating portion 7 of the armature 3, the magnetic flux Φ 2 of the permanent magnet 4 acts on the entire moving range of the contacting / separating portion 7 of the armature 3, The suction force of the armature 3 can be efficiently increased, and the power consumption can be reduced.
しかも、永久磁石４をヨーク１の他端部８に取り付ける
ことにより、永久磁石４より得られる磁束の増大により
吸引力を増大できるので消費電力を一層低減することが
できる。Moreover, by attaching the permanent magnet 4 to the other end portion 8 of the yoke 1, the attractive force can be increased by the increase of the magnetic flux obtained from the permanent magnet 4, so that the power consumption can be further reduced.
次に、コイル２に流れる電流を切ると復帰ばね（図示せ
ず）などにより、アーマチュア３は第３図(a)に示す状
態に復帰する。Next, when the current flowing through the coil 2 is cut off, the armature 3 returns to the state shown in FIG. 3 (a) by a return spring (not shown).
なお、ヨーク１は部品１個を略コ字形に折曲により形成
したが、Ｌ字形ヨークと棒状または板状ヨークにより、
かしめなどによって略コ字折曲形に構成してもよい。ま
た永久磁石４の一極と接触する補助ヨーク９は別部材で
なくヨーク１と一体形成された構造であってもよい。ま
た前記実施例は永久磁石４が一対であったが、１個でも
よい。さらに永久磁石４の磁極Ｓをヨーク１の他端部８
に磁気結合させたが、反対の磁極Ｎを磁気結合させても
よい。さらに永久磁石４をヨーク１に固定したが、ヨー
ク１を保持するケース、コイル２を巻装するコイル枠な
ど（図示せず）を介して固定してもよい。また永久磁石
４はフエライト磁石、希土類磁石、さらにはプラスチッ
ク磁石でもよい。また前記実施例では、永久磁石４の磁
化方向はアーマチュアの移動方向と完全な垂直であった
が、約４５度程度傾斜してもほぼ垂直の範囲である。The yoke 1 is formed by bending a single component into a substantially U shape, but an L-shaped yoke and a rod-shaped or plate-shaped yoke
It may be formed into a substantially U-shape by caulking. Further, the auxiliary yoke 9 that comes into contact with one pole of the permanent magnet 4 may not be a separate member but may be integrally formed with the yoke 1. Further, although the permanent magnet 4 is a pair in the above embodiment, it may be one. Further, the magnetic pole S of the permanent magnet 4 is connected to the other end 8 of the yoke 1.
However, the opposite magnetic pole N may be magnetically coupled. Further, although the permanent magnet 4 is fixed to the yoke 1, it may be fixed via a case that holds the yoke 1, a coil frame around which the coil 2 is wound (not shown), or the like. The permanent magnet 4 may be a ferrite magnet, a rare earth magnet, or a plastic magnet. Further, in the above-mentioned embodiment, the magnetization direction of the permanent magnet 4 is completely perpendicular to the moving direction of the armature, but it is in a substantially perpendicular range even if it is inclined by about 45 degrees.
この発明の第２の実施例を第４図および第５図に示す。
すなわち、この単安定電磁石は、永久磁石４をアーマチ
ュア３側の接離部７に固定したものであり、アーマチュ
ア３に一対のかぎ形の耳片１１を一体に形成し、各耳片
１１の内側に永久磁石４を取付け、磁極Ｓをヨーク１の
他端部８の側面に対向している。その他は第１の実施例
と同様である。A second embodiment of the present invention is shown in FIGS. 4 and 5.
That is, this monostable electromagnet is one in which the permanent magnet 4 is fixed to the contacting / separating portion 7 on the armature 3 side, and a pair of hook-shaped ear pieces 11 are integrally formed on the armature 3, and the inside of each ear piece 11 is formed. The permanent magnet 4 is attached to the magnetic pole S, and the magnetic pole S faces the side surface of the other end 8 of the yoke 1. Others are the same as those in the first embodiment.
永久磁石４をアーマチュア３側に固定することにより可
動部の重量は大きくなるが、アーマチュア３と同時成型
等により製造することにより、部品点数の削減および組
立性の向上が図れる。Although the weight of the movable part is increased by fixing the permanent magnet 4 to the armature 3 side, the number of parts can be reduced and the assemblability can be improved by manufacturing the armature 3 by simultaneous molding.
なお、耳片１１は別部材を用いてもよい。また永久磁石
４をアーマチュア３に直接固定したが、アーマチュア３
と同時動作する別部材を介してもよい。A separate member may be used for the ear piece 11. Although the permanent magnet 4 is directly fixed to the armature 3, the armature 3
A separate member that operates simultaneously with the above may be used.
この発明の第３の実施例を第６図ないし第８図に示す。
すなわち、この単安定電磁石は、第１の実施例におい
て、永久磁石４の磁極Ｎに集磁板１２を設けたものであ
る。A third embodiment of the present invention is shown in FIGS.
That is, this monostable electromagnet is the one in which the magnetic flux collecting plate 12 is provided on the magnetic pole N of the permanent magnet 4 in the first embodiment.
この実施例によれば、磁束Φ１，Φ２は集磁板１２を通
して永久磁石４よりアーマチュア３に洩れなく流れるの
で効率を向上することができる。したがって、アーマチ
ュア３の復帰側では第３図(a)のように磁気回路が粗な
る結合であるため、アーマチュア３を復帰方向に吸引す
る力はほとんど作用しないが、第３図(b)のように励磁
時のアーマチュア３がヨーク１に接近すると閉磁路とな
るのでアーマチュア３の吸引力の増大に寄与することが
でき、集磁板１２がない第１の実施例と比較して吸引力
を増大することができる。According to this embodiment, since the magnetic fluxes Φ 1 and Φ 2 flow through the magnetism collecting plate 12 from the permanent magnet 4 to the armature 3 without leaking, the efficiency can be improved. Therefore, on the return side of the armature 3, since the magnetic circuit is a coarse coupling as shown in FIG. 3 (a), the force for attracting the armature 3 in the return direction hardly acts, but as shown in FIG. 3 (b). Further, when the armature 3 at the time of excitation becomes a closed magnetic circuit when approaching the yoke 1, it can contribute to an increase in the attractive force of the armature 3, and the attractive force is increased as compared with the first embodiment in which the magnetism collecting plate 12 is not provided. can do.
この発明の第４の実施例を第９図ないし第１０図に示
す。すなわち、この単安定電磁石は、第２の実施例にお
いて、永久磁石４の磁極Ｓに集磁板１２を設けたもので
あり、集磁板１２により磁極Ｓとヨーク１との間の磁束
を洩れなく流すことができるので、第３の実施例と同様
の効果がある。A fourth embodiment of the present invention is shown in FIGS. 9 to 10. That is, in this monostable electromagnet, the magnetic flux collecting plate 12 is provided on the magnetic pole S of the permanent magnet 4 in the second embodiment, and the magnetic flux collecting plate 12 leaks the magnetic flux between the magnetic pole S and the yoke 1. Since it can be flowed without flow, the same effect as the third embodiment can be obtained.
なお、この発明において、コイル２および永久磁石４は
ヨーク１およびアーマチュア３の双方に設けられてもよ
い。In the present invention, the coil 2 and the permanent magnet 4 may be provided on both the yoke 1 and the armature 3.
請求項(1)の単安定電磁石は、アーマチュアの接離部の
近傍に磁化方向が接離部の移動方向とほぼ垂直である永
久磁石を配置したため、コイルの励磁による磁束は、永
久磁石を含まないで、ヨークおよびアーマチュアによる
閉磁路を形成することができる。さらに永久磁石により
発生する磁束を前記コイルによる磁束に重畳させること
ができるのでアーマチュアの吸引力を増大でき、したが
って消費電力を低減できる。一方アーマチュアの復帰位
置においては、永久磁石の磁束が閉ループを作らない構
成となり、アーマチュアの復帰方向には永久磁石の磁束
はほとんど作用しないので、従来のような動作ばねを必
要とすることなく片寄ったばね負荷に適用でき、ばね負
荷と整合しやすい吸引力特性が得られるという効果があ
る。In the monostable electromagnet according to claim (1), since the permanent magnet whose magnetizing direction is substantially perpendicular to the moving direction of the contact / separation portion is arranged near the contact / separation portion of the armature, the magnetic flux due to the excitation of the coil includes the permanent magnet. Without, a closed magnetic circuit can be formed by the yoke and the armature. Further, since the magnetic flux generated by the permanent magnet can be superposed on the magnetic flux generated by the coil, the attractive force of the armature can be increased, and therefore the power consumption can be reduced. On the other hand, in the armature return position, the magnetic flux of the permanent magnet does not form a closed loop, and the magnetic flux of the permanent magnet hardly acts in the armature return direction. There is an effect that it can be applied to a load and a suction force characteristic that can be easily matched with a spring load can be obtained.
請求項(2)の単安定電磁石は、請求項(1)の永久磁石の磁
極の前記接離部の移動方向と同方向の長さを、前記接離
部の移動範囲以上としたため、アーマチュアの接離部の
移動範囲の全体に永久磁石の磁束が作用するので、請求
項(1)の効果とともに、移動範囲の全体において効率的
にアーマチュアの吸引力を増大することができる。The monostable electromagnet according to claim (2) has a length in the same direction as the moving direction of the contacting and separating portion of the magnetic pole of the permanent magnet according to claim (1) that is equal to or larger than the moving range of the contacting and separating portion. Since the magnetic flux of the permanent magnet acts on the entire moving range of the contacting / separating portion, the attraction force of the armature can be efficiently increased in the entire moving range together with the effect of claim (1).
請求項(3)の単安定電磁石は、前記永久磁石は磁極に集
磁板を設けているため、永久磁石より発生する磁束をア
ーマチュアまたはヨークに洩れなく集めることができる
ので、より一層効率がよくなりコイルの励磁時のアーマ
チュアの吸引力が向上する。In the monostable electromagnet according to claim (3), since the permanent magnet is provided with a magnetic flux collecting plate, the magnetic flux generated by the permanent magnet can be collected without leaking to the armature or the yoke, so that the efficiency is further improved. The attractive force of the armature at the time of exciting the Nari coil is improved.
第１図はこの発明の第１の実施例の斜視図、第２図はそ
の分解斜視図、第３図は動作状態の説明図、第４図は第
２の実施例の斜視図、第５図はその動作状態の説明図、
第６図は第３の実施例の斜視図、第７図はその分解斜視
図、第８図は動作状態の説明図、第９図は第４の実施例
の斜視図、第１０図はその動作状態の説明図である。 １…ヨーク、２…コイル、３…アーマチュア、４…永久
磁石、７…接離部1 is a perspective view of a first embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is an explanatory view of an operating state, FIG. 4 is a perspective view of the second embodiment, and FIG. The figure is an explanatory diagram of its operating state,
FIG. 6 is a perspective view of the third embodiment, FIG. 7 is an exploded perspective view thereof, FIG. 8 is an explanatory view of an operating state, FIG. 9 is a perspective view of the fourth embodiment, and FIG. It is explanatory drawing of an operating state. 1 ... Yoke, 2 ... Coil, 3 ... Armature, 4 ... Permanent magnet, 7 ... Contact / separation part
Claims (3)
離部を有するアーマチュアと、前記ヨークおよび前記ア
ーマチュアの少なくともいずれか一方に巻装されて励磁
により前記アーマチュアを前記ヨークに吸引させるコイ
ルと、前記アーマチュアの接離部の近傍に配置されて磁
化方向が前記アーマチュアの移動方向とほぼ垂直である
永久磁石とを備えた単安定電磁石。1. A yoke, an armature having a contacting / separating portion capable of contacting / separating with the yoke, and a coil wound around at least one of the yoke and the armature and adapted to attract the armature to the yoke by excitation. A monostable electromagnet, comprising: and a permanent magnet disposed near a contacting / separating portion of the armature and having a magnetization direction substantially perpendicular to a moving direction of the armature.
記ヨークの少なくとも一方に固定され、その他方に対面
する前記永久磁石の磁極の前記接離部の移動方向と同方
向の長さが、前記接離部の移動範囲以上である請求項
(1)記載の単安定電磁石。2. The permanent magnet is fixed to at least one of the armature and the yoke, and the length of the magnetic pole of the permanent magnet facing the other side in the same direction as the moving direction of the contacting / separating portion is the contact / separation distance. Claim that is more than the movement range of the department
(1) The monostable electromagnet as described above.
請求項(1)記載の単安定電磁石。3. The monostable electromagnet according to claim 1, wherein the permanent magnet has a magnetic flux collecting plate on its magnetic pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1340003A JPH0642423B2 (en) | 1989-12-25 | 1989-12-25 | Monostable electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1340003A JPH0642423B2 (en) | 1989-12-25 | 1989-12-25 | Monostable electromagnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03196506A JPH03196506A (en) | 1991-08-28 |
| JPH0642423B2 true JPH0642423B2 (en) | 1994-06-01 |
Family
ID=18332818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1340003A Expired - Fee Related JPH0642423B2 (en) | 1989-12-25 | 1989-12-25 | Monostable electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0642423B2 (en) |
-
1989
- 1989-12-25 JP JP1340003A patent/JPH0642423B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03196506A (en) | 1991-08-28 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |