JPH04102139U - electromagnet device - Google Patents

Abstract

(57)【要約】 【目的】 本考案は安定した動作特性を有する電磁石装
置を提供することを目的とする。 【構成】 略同一平面上に位置する鉄芯の一対の磁極面
間に可動鉄片を架け渡し、かつ、前記鉄芯の一方の磁極
面に当接した前記可動鉄片の一端部を回動支点とし、前
記鉄芯に巻回したコイルの励磁,消磁に基づいて前記可
動鉄片を回動する電磁石装置において、前記可動鉄片の
略中間部を前記両磁極面と反対側に膨出するように屈曲
し、鉄芯の磁極面縁部や角部に可動鉄片の端部下面が当
接しないようにすることにより、安定な動作特性を有す
る電磁石装置。 (57) [Summary] [Purpose] The purpose of the present invention is to provide an electromagnetic device with stable operating characteristics. [Structure] A movable iron piece is bridged between a pair of magnetic pole faces of the iron core located on substantially the same plane, and one end of the movable iron piece that is in contact with one of the magnetic pole faces of the iron core is used as a rotation fulcrum. , in an electromagnetic device that rotates the movable iron piece based on excitation and demagnetization of a coil wound around the iron core, a substantially middle portion of the movable iron piece is bent so as to bulge toward a side opposite to the magnetic pole faces; An electromagnet device that has stable operating characteristics by preventing the bottom surface of the end of the movable iron piece from coming into contact with the edge or corner of the magnetic pole face of the iron core.

Description

【考案の詳細な説明】[Detailed explanation of the idea]

【０００１】0001

【産業上の利用分野】[Industrial application field]

本考案は電磁石装置、特に、その可動鉄片の形状に関するものである。 The present invention relates to an electromagnetic device, and in particular to the shape of its movable iron piece.

【０００２】0002

【従来の技術】[Conventional technology]

従来、電磁石装置における可動鉄片の支持構造としては、例えば、実開昭６３ −１４３８４２号公報に記載のものがある。 Conventionally, as a support structure for a movable iron piece in an electromagnet device, for example, There is one described in Japanese Patent No.-143842.

【０００３】 すなわち、図３に示すように、断面略コ字形の鉄芯１をインサート成形したス プール２にコイル３を巻回して電磁石部４を形成し、略く字形状のヒンジばね５ を介して板状の可動鉄片６を前記電磁石部４に回動可能に支持したものである。0003 That is, as shown in Fig. 3, a steel core 1 having a substantially U-shaped cross section is insert-molded. An electromagnet part 4 is formed by winding a coil 3 around a pool 2, and a substantially dogleg-shaped hinge spring 5 is formed. A plate-shaped movable iron piece 6 is rotatably supported on the electromagnet part 4 via a movable iron piece 6.

【０００４】 前記ヒンジばね５は、その一端部５aを前記鉄芯１の側端面にカシメ固定する するとともに、その他端部５bを可動鉄片６の背面中央部にカシメ固定すること により、鉄芯１の一方の磁極面であるヒンジ面７に当接した可動鉄片６の一端部 ６aを回動支点とする一方、可動鉄片６の他端部６bを鉄芯１の他方の磁極面８に 接離可能に対向させたものである。0004 The hinge spring 5 has one end 5a fixed to the side end surface of the iron core 1 by caulking. At the same time, the other end 5b is fixed to the center of the back of the movable iron piece 6 by caulking. As a result, one end of the movable iron piece 6 is in contact with the hinge surface 7, which is one of the magnetic pole surfaces of the iron core 1. 6a as a pivot point, while the other end 6b of the movable iron piece 6 is connected to the other magnetic pole face 8 of the iron core 1. They face each other so that they can be brought into contact and separated.

【０００５】 そして、コイル３に電圧を印加して励磁すると、鉄芯１の磁極面８が可動鉄片 ６の他端部６bを吸引するので、可動鉄片６が、その一端部６aを支点としてヒン ジばね５のばね力に抗して回動する。なお、図３において示した二点鎖線のヒン ジばねは取付前におけるヒンジばねの形状を図示している。[0005] Then, when a voltage is applied to the coil 3 to excite it, the magnetic pole face 8 of the iron core 1 changes to the movable iron piece. Since the other end 6b of 6 is attracted, the movable iron piece 6 is hinged with its one end 6a as a fulcrum. It rotates against the spring force of the spring 5. Note that the hint indicated by the two-dot chain line in Figure 3 The hinge spring shows the shape of the hinge spring before installation.

【０００６】[0006]

【考案が解決しようとする課題】[Problem that the idea aims to solve]

しかしながら、前記電磁石装置では、鉄芯１の加工精度のバラツキにより、磁 極面７,８に高低差を生じる場合がある。このため、例えば、図４において一点 鎖線で示すように、磁極面７が磁極面８よりも高い場合には、磁極面７の外方縁 部７aを支点として回動していた可動鉄片６が磁極面８に当接する直前に磁極面 ７の縁部７bに当接し、回動支点が変位するため、吸引力特性が図５において示 す一点鎖線のように急激に変化する。 However, in the electromagnet device, due to variations in the machining accuracy of the iron core 1, the magnetic There may be a height difference between the pole surfaces 7 and 8. For this reason, for example, one point in Figure 4 As shown by the chain line, when the magnetic pole face 7 is higher than the magnetic pole face 8, the outer edge of the magnetic pole face 7 Immediately before the movable iron piece 6, which was rotating around the part 7a as a fulcrum, comes into contact with the magnetic pole surface 8, the magnetic pole surface 7 and the rotational fulcrum is displaced, the suction force characteristics are as shown in Fig. 5. It changes rapidly as shown by the dashed line.

【０００７】 一方、図４において点線で示すように磁極面７が磁極面８よりも低い場合には 、可動鉄片６の他端部６bが鉄芯１の磁極面８に斜め上方から接近するので、動 作途中においては所望の吸引力が得られず、動作終了直前においては前記他端部 ６bが磁極面８の角部に接近するため、磁束密度が局部的に高くなり、吸引力が 急増する。[0007] On the other hand, if the magnetic pole face 7 is lower than the magnetic pole face 8 as shown by the dotted line in FIG. , since the other end 6b of the movable iron piece 6 approaches the magnetic pole face 8 of the iron core 1 from diagonally above, the movement During the operation, the desired suction force cannot be obtained, and just before the end of the operation, the other end 6b approaches the corner of the magnetic pole face 8, the magnetic flux density becomes locally high and the attractive force increases. rapidly increasing.

【０００８】 したがって、鉄芯１の加工精度のバラツキによって可動鉄片の動作特性にバラ ツキが生じ、このような電磁石装置を小型電磁継電器や高感度の電磁継電器に組 み込めば、その動作特性に悪影響を与えるという問題点がある。さらに、この問 題点は可動鉄片６の平面度にバラツキがある場合にも生じる。[0008] Therefore, variations in the machining accuracy of iron core 1 will cause variations in the operating characteristics of the movable iron piece. However, it is difficult to assemble such an electromagnetic device into a small electromagnetic relay or a highly sensitive electromagnetic relay. There is a problem in that if it gets mixed in, it will have an adverse effect on its operating characteristics. Furthermore, this question The problem also occurs when there are variations in the flatness of the movable iron piece 6.

【０００９】 そこで、本考案は前記問題点に鑑み、安定した動作特性を有する電磁石装置を 提供することを目的とする。[0009] Therefore, in view of the above problems, the present invention is an electromagnetic device with stable operating characteristics. The purpose is to provide.

【００１０】0010

【課題を解決するための手段】[Means to solve the problem]

本考案にかかる電磁石装置は、前記目的を達成するため、略同一平面上に位置 する鉄芯の一対の磁極面間に可動鉄片を架け渡し、かつ、前記鉄芯の一方の磁極 面に当接した前記可動鉄片の一端部を回動支点とし、前記鉄芯に巻回したコイル の励磁,消磁に基づいて前記可動鉄片を回動する電磁石装置において、前記可動 鉄片の略中間部を前記両磁極面と反対側に膨出するように屈曲した構成としたも のである。 In order to achieve the above object, the electromagnetic device according to the present invention is located substantially on the same plane. A movable iron piece is bridged between a pair of magnetic pole faces of the iron core, and one magnetic pole of the iron core is A coil wound around the iron core with one end of the movable iron piece in contact with the surface as a rotation fulcrum. In an electromagnet device that rotates the movable iron piece based on excitation and demagnetization of the movable iron piece, The substantially middle part of the iron piece may be bent so as to bulge out to the side opposite to the magnetic pole faces. It is.

【００１１】[0011]

【作用】[Effect]

したがって、本考案によれば、部品の寸法精度のバラツキにより、一対の磁極 面に高低差があり、例えば、鉄芯の一方の磁極面を支点として可動鉄片が回動し ても、可動鉄片の端部下面が磁極面の縁部に当接して回動支点が移動することは ない。 Therefore, according to the present invention, due to variations in the dimensional accuracy of the parts, the pair of magnetic poles There is a difference in height between the surfaces, for example, when a movable iron piece rotates using one magnetic pole surface of the iron core as a fulcrum. However, the lower surface of the end of the movable iron piece may come into contact with the edge of the magnetic pole surface and the rotation fulcrum may move. do not have.

【００１２】0012

【実施例】【Example】

次に、本考案に係る電磁石装置の一実施例を図１および図２の添付図面に従っ て説明する。 すなわち、本実施例に係る電磁石装置は断面略コ字形の鉄芯１０をインサート 成形したスプール２０にコイル３０を巻回して電磁石部３１を形成し、この電磁 石部３１にヒンジばね４０を介して可動鉄片５０を回動可能に支持したものであ る。 Next, an embodiment of the electromagnet device according to the present invention will be explained according to the attached drawings in FIGS. 1 and 2. I will explain. That is, the electromagnet device according to the present embodiment inserts an iron core 10 having a substantially U-shaped cross section. A coil 30 is wound around the formed spool 20 to form an electromagnet part 31. A movable iron piece 50 is rotatably supported on the stone part 31 via a hinge spring 40. Ru.

【００１３】 鉄芯１０は両端部１１,１２の露出する端面を磁極面１３,１４としたもので、 この磁極面１３,１４は略同一平面上に位置する。[0013] The iron core 10 has both ends 11 and 12 with exposed end faces serving as magnetic pole faces 13 and 14, The magnetic pole faces 13 and 14 are located on substantially the same plane.

【００１４】 前記スプール２０は一方の鍔部２１の外側面に取付台２３が突設され、この取 付台２３の基部には後述するヒンジばね４０を挿入できる凹部２４が設けられて いるとともに、後述するヒンジばね４０の屈曲部４３,４４を圧入,固定できる一 対の圧入溝２５,２６が設けられている。[0014] The spool 20 has a mounting base 23 protruding from the outer surface of one of the flanges 21. A recess 24 is provided at the base of the attachment base 23 into which a hinge spring 40 (described later) can be inserted. At the same time, it is possible to press-fit and fix bent parts 43 and 44 of the hinge spring 40, which will be described later. A pair of press-fit grooves 25 and 26 are provided.

【００１５】 ヒンジばね４０は両側に腕部４１,４２を有する略コ字形状を有し、前記腕部 ４１,４２に前記圧入溝２５,２６に圧入固定できる屈曲部４３,４４を設け、か つ、前記腕部４１,４２の間から付勢用舌片４５を延在して曲げ起こしたもので ある。[0015] The hinge spring 40 has a substantially U-shape with arm parts 41 and 42 on both sides, and the arm parts 41 and 42 are provided with bent portions 43 and 44 that can be press-fitted and fixed into the press-fit grooves 25 and 26, First, the biasing tongue piece 45 is extended from between the arm parts 41 and 42 and bent up. be.

【００１６】 そして、前記スプール２０の凹部２４にヒンジばね４０を挿入し、ヒンジばね ４０の屈曲部４３,４４をスプール２０の圧入溝２５,２６に圧入,固定すること により、前記ヒンジばね４０がスプール２０に固定される。[0016] Then, insert the hinge spring 40 into the recess 24 of the spool 20, and then insert the hinge spring 40 into the recess 24 of the spool 20. Pressing and fixing the bent portions 43 and 44 of 40 into the press-fitting grooves 25 and 26 of the spool 20 As a result, the hinge spring 40 is fixed to the spool 20.

【００１７】 前記可動鉄片５０は打ち抜いて得た板状材をプレス加工で屈曲したもので、そ の中間部に曲げ加工を施して微小角θだけ磁極面１３，１４と反対側に膨出する ように屈曲させる（図１）とともに、一端部を曲げ起こして形成した取付枠５１ の基部に位置規制用肩部５２,５２(奥側の肩部は図示せず)を設ける一方、他端 部を前記取付枠５１と反対方向に曲げ起こして薄肉爪部５３を形成したものであ る。[0017] The movable iron piece 50 is a plate-shaped material obtained by punching and bent by press working. The middle part is bent to bulge out by a small angle θ to the side opposite to the magnetic pole faces 13 and 14. The mounting frame 51 is bent as shown in FIG. 1 and is formed by bending and raising one end. Position regulating shoulders 52, 52 (the shoulder on the back side is not shown) are provided at the base of the The thin claw portion 53 is formed by bending and raising the portion in the opposite direction to the mounting frame 51. Ru.

【００１８】 そして、前記ヒンジばね４０の付勢用舌片４５に可動鉄片５０の取付枠５１を 組み付けると、ヒンジばね４０の腕部４１,４２の先端部に可動鉄片５０の位置 規制用肩部５２が圧接して回動可能に位置決めされる。[0018] Then, attach the mounting frame 51 of the movable iron piece 50 to the biasing tongue piece 45 of the hinge spring 40. When assembled, the movable iron piece 50 is located at the tip of the arms 41 and 42 of the hinge spring 40. The regulating shoulder portion 52 is brought into pressure contact and positioned so as to be rotatable.

【００１９】 したがって、無励磁の場合、ヒンジばね４０のばね力により、図１において可 動鉄片５０が反時計回り方向に付勢されている。[0019] Therefore, in the case of non-excitation, the spring force of the hinge spring 40 allows the The moving iron piece 50 is biased counterclockwise.

【００２０】 そして、コイル３０に電圧を印加して励磁すると、鉄芯１０の磁極面１４が可 動鉄片５０の爪部５３の近傍に位置する吸着面５４を吸引するので、可動鉄片５ ０がヒンジばね４０のばね力に抗して回動し、可動鉄片５０の下面がスプール２ ０の鍔部２２に当接する。[0020] Then, when a voltage is applied to the coil 30 to excite it, the magnetic pole face 14 of the iron core 10 becomes flexible. Since the suction surface 54 located near the claw portion 53 of the movable iron piece 50 is attracted, the movable iron piece 5 0 rotates against the spring force of the hinge spring 40, and the lower surface of the movable iron piece 50 touches the spool 2. It comes into contact with the flange 22 of 0.

【００２１】 ついで、前記コイル３０の励磁を解くと、ヒンジばね４０のばね力によって可 動鉄片５０が反時計回り方向に回動して元の状態に復帰する。[0021] Then, when the coil 30 is de-energized, the spring force of the hinge spring 40 causes the coil 30 to be turned off. The moving iron piece 50 rotates counterclockwise and returns to its original state.

【００２２】 本実施例によれば、鉄芯１０の加工精度のバラツキにより、例えば、鉄芯１０ の一方の磁極面１３が他の磁極面１４よりも高い場合であっても、可動鉄片５０ の中間部を微小角θだけ曲げてあるので、可動鉄片５０が回動しても、可動鉄片 ５０の下面が磁極面１３の内方縁部に当接することがなく、回動支点が変位しな いため、動作特性にバラツキが生じない。[0022] According to this embodiment, due to variations in the processing accuracy of the iron core 10, for example, the iron core 10 Even if one magnetic pole surface 13 is higher than the other magnetic pole surface 14, the movable iron piece 50 Since the middle part of the movable iron piece 50 is bent by a small angle θ, even if the movable iron piece 50 rotates, The lower surface of the magnetic pole face 13 does not come into contact with the inner edge of the magnetic pole face 13, and the pivot point does not displace. Therefore, there is no variation in operating characteristics.

【００２３】 なお、前述の実施例では、可動鉄片を微小角θだけ屈曲する場合について説明 したが、必ずしもこれに限らず、湾曲させた可動鉄片であってもよいことは勿論 である。[0023] In addition, in the above-mentioned example, the case where the movable iron piece is bent by a small angle θ is explained. However, it is not necessarily limited to this, and it goes without saying that a curved movable piece of iron may also be used. It is.

【００２４】[0024]

【考案の効果】[Effect of the idea]

以上の説明から明らかなように、本考案に係る電磁石装置によれば、可動鉄片 の略中間部を磁極面と反対側に膨出するように屈曲してあるので、鉄芯の一対の 磁極面に高低差が生じても、鉄芯の磁極面の縁部や角部に可動鉄片の端部下面が 当接しない。このため、可動鉄片の回動支点が変位せず、磁極面の所定の位置に 可動鉄片の端部が常に当接するので、吸引力特性が安定し、動作特性にバラツキ が生じないという効果がある。 As is clear from the above explanation, according to the electromagnet device according to the present invention, the movable iron piece Since the approximately middle part of the iron core is bent so as to bulge out on the opposite side of the magnetic pole surface, the pair of iron cores Even if there is a difference in height between the magnetic pole surfaces, the bottom surface of the end of the movable iron piece will not touch the edge or corner of the magnetic pole surface of the iron core. Do not touch. For this reason, the rotation fulcrum of the movable iron piece does not displace and remains at the specified position on the magnetic pole face. Since the end of the movable iron piece is always in contact with each other, the suction force characteristics are stable and the operating characteristics do not vary. This has the effect that it does not occur.

【００２５】[0025]

【図面の簡単な説明】[Brief explanation of drawings]

【図１】 本考案にかかる電磁石装置の一実施例を示す
断面図である。FIG. 1 is a sectional view showing an embodiment of an electromagnet device according to the present invention.

【図２】 本考案にかかる電磁石装置の一実施例を示す
分解斜視図である。FIG. 2 is an exploded perspective view showing an embodiment of the electromagnet device according to the present invention.

【図３】 従来例にかかる電磁石装置の一実施例を示す
断面図である。FIG. 3 is a sectional view showing an example of an electromagnet device according to a conventional example.

【図４】 従来例にかかる電磁石装置の鉄芯を示す側面
図である。FIG. 4 is a side view showing an iron core of an electromagnet device according to a conventional example.

【図５】 従来例にかかる電磁石装置の吸引力特性を示
すグラフ図である。FIG. 5 is a graph diagram showing attraction force characteristics of an electromagnet device according to a conventional example.

【符号の説明】[Explanation of symbols]

１０…鉄芯、１３,１４…磁極面、３０…コイル、５０
…可動鉄片。10... Iron core, 13,14... Magnetic pole surface, 30... Coil, 50
…Movable piece of iron.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 略同一平面上に位置する鉄芯の一対の磁
極面間に可動鉄片を架け渡し、かつ、前記鉄芯の一方の
磁極面に当接した前記可動鉄片の一端部を回動支点と
し、前記鉄芯に巻回したコイルの励磁,消磁に基づいて
前記可動鉄片を回動する電磁石装置において、前記可動
鉄片の略中間部を前記両磁極面と反対側に膨出するよう
に屈曲したことを特徴とする電磁石装置。Claim 1: A movable iron piece is bridged between a pair of magnetic pole faces of an iron core located on substantially the same plane, and one end of the movable iron piece that is in contact with one of the magnetic pole faces of the iron core is rotated. In an electromagnet device that uses the movable iron piece as a fulcrum and rotates the movable iron piece based on excitation and demagnetization of a coil wound around the iron core, a substantially middle portion of the movable iron piece is configured to bulge out to the side opposite to the two magnetic pole faces. An electromagnetic device characterized by being bent.