JPS58119612A - Electromagnet device - Google Patents

Electromagnet device

Info

Publication number
JPS58119612A
JPS58119612A JP98982A JP98982A JPS58119612A JP S58119612 A JPS58119612 A JP S58119612A JP 98982 A JP98982 A JP 98982A JP 98982 A JP98982 A JP 98982A JP S58119612 A JPS58119612 A JP S58119612A
Authority
JP
Japan
Prior art keywords
iron core
core
movable
coil
movable core
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.)
Pending
Application number
JP98982A
Other languages
Japanese (ja)
Inventor
Susumu Sato
進 佐藤
Hideji Matsuura
松浦 秀司
Masao Yamamoto
山元 征夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tamura Electric Works Ltd
Original Assignee
Tamura Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tamura Electric Works Ltd filed Critical Tamura Electric Works Ltd
Priority to JP98982A priority Critical patent/JPS58119612A/en
Publication of JPS58119612A publication Critical patent/JPS58119612A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081Magnetic constructions

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

PURPOSE:To prevent generation of excessive attracting force of the electromagnet when attraction is completed by a method wherein a penetrating hole, a groove, etc., is provided in a movable core to make the width at the middle part to be narrowed substantially. CONSTITUTION:The penetrating hole 10 having the hole diameter D is formed at the middle part of the movable core 5 to make width at the middle part to be narrowed (B-D) substantially, and accordingly the quantity of magnetic flux is limited when attraction is completed, and action of excessive attracting force to the movable core 5 is prevented. By providing the penetrating hole 10, reduction of increase of magnetic flux according to approach of the movable core 5 to a core 3 up to the neighborhood of the saturated value can be attained.

Description

【発明の詳細な説明】 本発明は吸引完了時における過剰な吸引力を雛するよう
にした電磁石装置に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic device designed to reduce excessive suction force upon completion of suction.

一般に、この種の電磁石装置は第1図C)、Φ)に示す
如く中空状に形成され両端部外周面にフランジ1&、1
bを一体に有するコイルスブール1と、このコイルスブ
ール1の外周面に巻回された励磁コイル2と、コイルス
プール1の中空部に配設さねた鉄心3と、この鉄心3と
共に磁気回路を形成する略り字形のヨーク4と、このヨ
ーク4の上端に基部が適宜な軸受手段によって回動自在
に枢支さればね6によって常時鉄心3から離反する方向
の復旧習性が付与されておシ、前記励磁コイル2への通
電時にはね6に抗して鉄心3に吸引される可動鉄心5と
で構成されている。この場合、可動鉄心5が吸引回動す
る際、ばね6の力は飢2図に示すように略直縁的に変化
するのに対して、コイル2の吸引力Fは距離lの2乗に
反比例するので、可動鉄心5が回動するに従って曲線的
に増加し、吸引完了時における吸引力yが最大となり種
々の不都合を生じる。
Generally, this type of electromagnet device is formed into a hollow shape as shown in Fig. 1 C) and Φ), and has flanges 1 & 1 on the outer peripheral surface of both ends.
A coil spool 1 integrally having a coil spool 1, an excitation coil 2 wound around the outer circumferential surface of the coil spool 1, an iron core 3 disposed in the hollow part of the coil spool 1, and a magnetic circuit together with the iron core 3. The yoke 4 has an abbreviated shape, and the base of the yoke 4 is rotatably supported at the upper end of the yoke 4 by suitable bearing means, and is provided with a restoring habit in the direction of always moving away from the iron core 3 by a spring 6. The movable iron core 5 is attracted to the iron core 3 against the spring 6 when the excitation coil 2 is energized. In this case, when the movable iron core 5 rotates under attraction, the force of the spring 6 changes approximately linearly as shown in Figure 2, while the attraction force F of the coil 2 changes as the square of the distance l. Since it is inversely proportional, it increases in a curved manner as the movable core 5 rotates, and the suction force y reaches its maximum when suction is completed, causing various problems.

すなわち、例えば直流型電磁カウンタに組込んだ場合、
可動鉄心5の吸引完了時において迦剰な力y(i’2図
f14線部)が可動鉄心5に加わるため、骸鉄心5が歪
み、鉄心3と可動鉄心5の空隙Gが小さくなり、電気パ
ルスが連断された後も残留磁束が大きくなり、可動鉄心
5の復旧動作を遅らせ( カウンタの高速化1妨げる。また、可動鉄心5が吸引さ
れた時、鉄心5がびびったシ、過剰な力が可動鉄心5の
軸受部7に加わ)、カウンタの性能を低下させる。
For example, when incorporated into a DC electromagnetic counter,
When the suction of the movable core 5 is completed, an excessive force y (line part f14 in Fig. i'2) is applied to the movable core 5, so the skeleton core 5 is distorted, the gap G between the core 3 and the movable core 5 becomes smaller, and the electric Even after the pulses are interrupted, the residual magnetic flux increases, delaying the recovery operation of the movable core 5 (preventing the speed-up of the counter 1. Also, when the movable core 5 is attracted, the core 5 trembles and excessive force is applied to the bearing part 7 of the moving core 5), reducing the performance of the counter.

本発明は上述したような点に鑑みてなされたもので、可
動鉄心に透孔、溝等を設けて、該鉄心の途中幅を実質的
に狭くすることによシ、吸引完了時点での磁束を飽和状
態の近く迄減磁し、上記問題を解決するようにした電磁
石装sit提供するものである。
The present invention has been made in view of the above-mentioned points, and by providing through holes, grooves, etc. in the movable core and substantially narrowing the midway width of the core, the magnetic flux at the time of completion of suction is reduced. The present invention provides an electromagnet system that solves the above problem by demagnetizing the magnet to a state close to saturation.

以下、本発明を図面に示す実施例に道づいて評細に説明
する。
Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

第3図は本発明に係る電磁石装置の一実施例を示す一部
破断平面図である。同図において、可動鉄心5の途中箇
所に適宜ti径りを有する透?t10を形成し、前P途
中筒周の幅を実質的に狭<CB−D)した麿が第1図に
示した従来装置と異なシ、これによって吸引完了時にお
ける磁束の量を制限し、過大な吸引力が可動鉄心5に作
用しないようにしたものである。なお、第1図と同一符
号のものは同一構成部材を示すため、その説明を省略す
る。
FIG. 3 is a partially cutaway plan view showing an embodiment of the electromagnet device according to the present invention. In the figure, the movable iron core 5 has an appropriate diameter ti in the middle. This is different from the conventional device shown in FIG. 1 in that the width of the cylindrical circumference is substantially narrowed in the middle of the front P by forming t10, thereby limiting the amount of magnetic flux when the suction is completed, This is to prevent excessive suction force from acting on the movable iron core 5. Note that the same reference numerals as in FIG. 1 indicate the same structural members, and therefore the description thereof will be omitted.

ことで、磁気飽和量について考察すると、磁気回路を通
る磁束Φは Φ= 1 p          *・・・・ (11
(但L: uはコイル2のアンペアターン、pはパーミ
アンス) で示される。
Therefore, considering the amount of magnetic saturation, the magnetic flux Φ passing through the magnetic circuit is Φ= 1 p *... (11
(L: u is ampere turns of coil 2, p is permeance).

Uは電流と巻数との積によって決まるため、定数とみ表
すことができ、pは鉄心30円円形面X−Y軸上におけ
るパーミアンスPgと、可動鉄心Sの支点sKおけるパ
ーミアンスPh(fflLph=pr+P@)によって
決まり、 で表わされる。
Since U is determined by the product of the current and the number of turns, it can be expressed as a constant, and p is the permeance Pg on the X-Y axis of the 30-circular surface of the iron core, and the permeance Ph at the fulcrum sK of the movable iron core S (fflLph=pr+P@ ) and is expressed as .

で、μは透磁率、tは鉄心3と可動鉄心5の空隙、Sは
鉄心3の端面の断面積、kは定数、θは可動鉄心5の回
転角、Bは可動鉄心5の幅、xoは可動鉄心5と田−り
4の接触部の範囲で空隙が悪いと児女される範囲、tは
可動鉄心5の極厚、αは定数、bは可動鉄心5の透孔1
0が形成され九途中部分における幅(It−D)である
(但し、t、0゜xo、tについては第1図参II)。
where μ is the magnetic permeability, t is the air gap between the iron core 3 and the movable iron core 5, S is the cross-sectional area of the end face of the iron core 3, k is a constant, θ is the rotation angle of the movable iron core 5, B is the width of the movable iron core 5, xo is the range where the air gap is considered to be poor in the contact area between the movable core 5 and the plate 4, t is the extreme thickness of the movable core 5, α is a constant, and b is the through hole 1 of the movable core 5
0 is formed and is the width (It-D) at the middle part (however, regarding t, 0° xo, and t, see II in Fig. 1).

前記(21式よ)明らかなようにPijPnが大きくな
ると、換言すれば可動鉄心5の途中幅すが大きくなると
増大する。また、磁束−はPに比例するから、磁気回路
がはなはだしく飽和していないと仮定するとbに影響さ
れる。
As is clear from the above (Formula 21), as PijPn increases, in other words, as the intermediate width of the movable iron core 5 increases. Also, since the magnetic flux - is proportional to P, it is influenced by b, assuming that the magnetic circuit is not extremely saturated.

したがって、このことを逆に利用して透孔10を設ける
ことによシ、可動鉄心5が鉄心3に近接することによる
磁束−の増加を飽和値の附近まで減少させることが可能
で、従来の吸引力カーブを緩やかにすることができる。
Therefore, by making use of this fact and providing the through hole 10, it is possible to reduce the increase in magnetic flux caused by the proximity of the movable core 5 to the core 3 to around the saturation value, which is not possible in the conventional method. The suction force curve can be made gentler.

この場合、特にパーミアンスpeに与える影響、すなわ
ちある一定の磁束0以上は可動鉄心5の途中幅すによっ
て飽和状部管形成することと、また透孔1o11−x軸
方向に移動させ鉄心3の外径端部迄近接させれば、パー
ミアンスPgに与える影響があり、退位glを変化させ
ることによシ所望の吸引カー線が得られる。
In this case, especially for the influence on the permeance pe, that is, for a certain magnetic flux of 0 or more, it is necessary to form a saturated part tube by the middle width of the movable iron core 5, and also to move the through hole 1o11-x axis direction to the outside of the iron core 3. If it is brought close to the radial end, it will have an effect on the permeance Pg, and by changing the retreat gl, a desired suction curve line can be obtained.

第4図(1)〜(、)は可動鉄心5と透?tloの位置
関係による電流波形な示す図で、第5図は透?it−有
さない従来の可動鉄心を用いた場合の電ff1lI形を
示す図である。
Figure 4 (1) to (,) are the movable iron core 5 and transparent? Figure 5 shows the current waveform depending on the positional relationship of tlo. It is a figure which shows the electric ff11I type when using the conventional movable iron core which does not have it.

これらの図から明らかなように、第4図伽)の電流波形
が最もなだらかでパウンドが少なく、従来装置の波形が
途中で著しくパウンドしている。このパウンドは吸引完
了時に診引力が急激に強くな〕、可動鉄心5が鉄心3に
当シびびるために生じるものである。
As is clear from these figures, the current waveform in Figure 4) is the gentlest and has the least amount of pounding, while the waveform of the conventional device has a noticeable pounding in the middle. This pound is generated because the diagnostic force suddenly becomes stronger when suction is completed, and the movable iron core 5 comes into contact with the iron core 3.

なお、上F実施例においては可動鉄心5の途中幅bVK
実質的に狭くする手段として透110を設けた場合につ
いて説明したが、本発明はこれに限定されるものではな
く、可動鉄心5の一側縁もしくは両側縁中間部に開口し
他側縁方向に延在する長溝であってもよく、を丸孔と長
溝との組み合わせでもよいことは勿論である。
In addition, in the upper F embodiment, the intermediate width bVK of the movable iron core 5
Although a case has been described in which a through hole 110 is provided as a means for substantially narrowing the width, the present invention is not limited to this. Of course, it may be an extending long groove or a combination of a round hole and a long groove.

以上説明したように本発明に−る電磁石装置は可動鉄心
の途中に透孔等を設け、磁束の通過する通路を狭めるこ
とによシ、磁束の飽和値を下げるようにしたので、吸引
完了時における過剰な吸引力の発生管防止することがで
きる。そのため、可動鉄心の変形、残留磁気の発生等が
少なく、良好′&吸引、復旧動作を可能にすると共に軸
受部の損傷も少なく、装置自体の性能、側久性管向上さ
せることができ、電磁カウンタ等の機器に使用して好適
である。また、構造簡易にして可動鉄心の途中幅をプレ
ス加工勢によシ簡卑に狭めることができるので、安価に
製造し得る々ど、その効果は非常に大である。
As explained above, the electromagnet device according to the present invention is designed to reduce the saturation value of the magnetic flux by providing a through hole etc. in the middle of the movable core and narrowing the path through which the magnetic flux passes. The generation of excessive suction force in the tube can be prevented. Therefore, there is less deformation of the movable core, generation of residual magnetism, etc., allowing for good suction and recovery operations, and less damage to the bearing part, improving the performance of the device itself and the lateral durability of the electromagnetic tube. Suitable for use in devices such as counters. Furthermore, since the structure is simplified and the intermediate width of the movable iron core can be easily narrowed by press working, it can be manufactured at low cost, and the effect is very large.

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

第1図体)、伽)は従来の電磁石装置を示す平面−およ
び側断面図、第2図はばねの力とコイルの吸引力を示す
図、第3図は本発明に係る電磁石装置の一実施例を示す
一部破断平面図、fIg4図(1)〜(@)は可動鉄心
と透孔の位置関係による電流波形を示す図、第5図は透
孔を有さない従来の可動鉄心を用いた場合の電流波形を
示す図である。 111・・・コイルスプール、2・書・・1mmココイ
ル3・・・・鉄心、4・・・・ヨーク、sll・・・可
動鉄心、6・・・・コイルばね、1@・・・軸受手段(
部)。 特許出願人  株式会社 田村電機製作所代理人 山川
政樹(ほか1名)
Figures 1) and 2) are plan and side sectional views showing a conventional electromagnet device, Figure 2 is a diagram showing the force of a spring and the attractive force of a coil, and Figure 3 is an embodiment of an electromagnet device according to the present invention. A partially cutaway plan view showing an example, fIg4 Figures (1) to (@) are diagrams showing current waveforms depending on the positional relationship between the movable core and the through hole, and Figure 5 shows a conventional movable core without a through hole. FIG. 3 is a diagram showing a current waveform when 111...Coil spool, 2...1mm cocoil 3...Iron core, 4...Yoke, sll...Movable iron core, 6...Coil spring, 1@...Bearing means (
Department). Patent applicant: Tamura Electric Manufacturing Co., Ltd. Agent: Masaki Yamakawa (and one other person)

Claims (1)

【特許請求の範囲】[Claims] コイルが巻回され九コイルメプールと、このコイルスプ
ールの中空部に配設された鉄心と、この鉄心と一体もし
くは一体化され磁気回路を形成するヨークと、このヨー
クに一端が回動自在に枢着され前記コイルへの通電時に
前記鉄心によって嘘引される可動鉄心とを具備してなシ
、前記可動鉄心の途中幅t*質的に狭くして磁り量の飽
和値を下げたことを%徴とする電磁石装置。
A nine-coil mepool around which the coil is wound, an iron core disposed in the hollow part of this coil spool, a yoke that is integrated or integrated with this iron core to form a magnetic circuit, and one end of which is rotatably attached to this yoke. The movable iron core is pivotally mounted and pulled by the iron core when the coil is energized, and the intermediate width t* of the movable iron core is qualitatively narrowed to lower the saturation value of the amount of magnetism. An electromagnetic device with a % characteristic.
JP98982A 1982-01-08 1982-01-08 Electromagnet device Pending JPS58119612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP98982A JPS58119612A (en) 1982-01-08 1982-01-08 Electromagnet device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP98982A JPS58119612A (en) 1982-01-08 1982-01-08 Electromagnet device

Publications (1)

Publication Number Publication Date
JPS58119612A true JPS58119612A (en) 1983-07-16

Family

ID=11488999

Family Applications (1)

Application Number Title Priority Date Filing Date
JP98982A Pending JPS58119612A (en) 1982-01-08 1982-01-08 Electromagnet device

Country Status (1)

Country Link
JP (1) JPS58119612A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5628602A (en) * 1996-01-18 1997-05-13 Kyo-Ei Sangyo Kabushiki Kaisha Anti-theft hub nut for vehicle wheels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5628602A (en) * 1996-01-18 1997-05-13 Kyo-Ei Sangyo Kabushiki Kaisha Anti-theft hub nut for vehicle wheels

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