JPH0518005U - Plunger type electromagnet - Google Patents

Plunger type electromagnet

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Publication number
JPH0518005U
JPH0518005U JP7111591U JP7111591U JPH0518005U JP H0518005 U JPH0518005 U JP H0518005U JP 7111591 U JP7111591 U JP 7111591U JP 7111591 U JP7111591 U JP 7111591U JP H0518005 U JPH0518005 U JP H0518005U
Authority
JP
Japan
Prior art keywords
plunger
convex portion
suction force
coil
force
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
JP7111591U
Other languages
Japanese (ja)
Inventor
謙二 甲
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.)
Nissin Electric Co Ltd
Original Assignee
Nissin Electric Co 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 Nissin Electric Co Ltd filed Critical Nissin Electric Co Ltd
Priority to JP7111591U priority Critical patent/JPH0518005U/en
Publication of JPH0518005U publication Critical patent/JPH0518005U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】 【目的】 初期吸引力を得やすくすると同時に負荷特性
に応じた吸引力を確保し、動作終了段階でのプランジャ
と呼び鉄との当接衝撃力を緩和する。 【構成】 ソレノイド形電磁コイル2の内底部に呼び鉄
3を固定し、コイル2への通電によりプランジャ4をコ
イル2の内側に吸引するプランジャ形電磁石において、
プランジャ4及び呼び鉄3の互いに向い合う面の一方及
び他方にそれぞれ凸部6及びこれが遊嵌する凹部7を形
設する。
(57) [Summary] [Purpose] It is easy to obtain the initial suction force and at the same time secure the suction force according to the load characteristics, and to reduce the contact impact force between the plunger and the nominal iron at the end stage of operation. [Structure] In a plunger type electromagnet in which a nominal iron 3 is fixed to an inner bottom portion of a solenoid type electromagnetic coil 2, and a plunger 4 is attracted inside the coil 2 by energizing the coil 2,
A convex portion 6 and a concave portion 7 into which the convex portion 6 is loosely fitted are formed on one side and the other side of the surfaces of the plunger 4 and the nominal iron 3 facing each other.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、開閉器用操作器等に好適なプランジャ形電磁石に関する。 The present invention relates to a plunger type electromagnet suitable for a switch operating device and the like.

【0002】[0002]

【従来の技術】[Prior Art]

従来より、開閉器を入切操作する操作器においては、投入操作器にプランジャ 形電磁石を用い、この電磁吸引力をレバ−,リンク等の機構を介して主軸に伝達 し、投入動作を行わせるようにしている。 図5は従来のこの種電磁石を示したものであり、ヨ−ク1に取り付けられたソ レノイド形電磁コイル2の内底部に呼び鉄3を固定し、この上方にプランジャ4 を上下動自在に配置すると共に、プランジャ4のプランジャロッド5を主軸にレ バ−,リンク等を介して連結している。 Conventionally, in an operating device that opens and closes a switch, a plunger type electromagnet is used as the closing operation device, and this electromagnetic attraction force is transmitted to the main shaft through a mechanism such as a lever and a link to perform the closing operation. I am trying. FIG. 5 shows a conventional electromagnet of this type, in which a ferrous iron 3 is fixed to the inner bottom portion of a solenoid type electromagnetic coil 2 attached to a yoke 1, and a plunger 4 is vertically movable above this. In addition to being arranged, the plunger rod 5 of the plunger 4 is connected to the main shaft via levers, links and the like.

【0003】 そして、図5の遮断状態よりコイル2に通電してこれを励磁すると、呼び鉄3 が磁化され、呼び鉄3とプランジャ4との間で吸引力が作用し、プランジャ4が この吸引力により下動し、これに伴なって投入動作が行われ、呼び鉄3とプラン ジャ4との互いに対向するフラット面が当接する時、投入動作が完了する。When the coil 2 is energized to excite the coil 2 from the cut-off state of FIG. 5, the nominal iron 3 is magnetized, an attractive force acts between the nominal iron 3 and the plunger 4, and the plunger 4 attracts the attractive force. When the force moves downward, the closing operation is carried out accordingly, and when the flat surfaces of the nominal iron 3 and the plunger 4 facing each other come into contact with each other, the closing operation is completed.

【0004】[0004]

【考案が解決しようとする課題】[Problems to be solved by the device]

前述した従来の電磁石にあっては、呼び鉄3とプランジャ4とがそれぞれのフ ラット面で対向し、この両フラット面間に生じる一様な磁束による吸引力でプラ ンジャ4を吸引する構成であるが、この吸引力は呼び鉄3とプランジャ4間の距 離すなわち動作ストロ−クLの2乗に反比例し、図6に示すような特性となる。 In the conventional electromagnet described above, the nominal iron 3 and the plunger 4 are opposed to each other on their respective flat surfaces, and the plunger 4 is attracted by the attractive force due to the uniform magnetic flux generated between the flat surfaces. However, this suction force is inversely proportional to the distance between the nominal iron 3 and the plunger 4, that is, the square of the operating stroke L, and has the characteristic shown in FIG.

【0005】 このため、動作開始時、コイル2に通電してから吸引力が得られるまでに時間 がかかり、初期吸引力が得にくい欠点があり、さらに、遮断位置から投入完了位 置に向かうに従って吸引力が大幅に増加していくため、操作器機構部の負荷力に 対し図6に斜線で示す部分のエネルギが過剰となり、特に投入完了位置直前で余 剰エネルギが急速に増加してプランジャ4の動作速度が最高速となり、プランジ ャ4と呼び鉄3との当接時の衝撃力が非常に大きくなる問題がある。For this reason, at the start of operation, it takes time until the suction force is obtained after the coil 2 is energized, and it is difficult to obtain the initial suction force. Further, as the operation proceeds from the cutoff position to the closing completion position. Since the suction force increases significantly, the energy of the shaded area in Fig. 6 becomes excessive with respect to the load force of the operating mechanism, and the surplus energy increases rapidly immediately before the injection completion position, and the plunger 4 Has a problem that the impact force at the time of contact between the plunger 4 and the nominal iron 3 becomes extremely large.

【0006】 本考案は、従来の技術の有するこのような問題点に留意してなされたものであ り、その目的とするところは、初期吸引力を得やすくすると同時に負荷特性に応 じた吸引力を得ることが可能なプランジャ形電磁石を提供することにある。The present invention has been made in view of such problems of the conventional technology, and its purpose is to make it easier to obtain an initial suction force and at the same time, to reduce suction force according to load characteristics. It is to provide a plunger type electromagnet capable of obtaining a force.

【0007】[0007]

【課題を解決するための手段】[Means for Solving the Problems]

前記目的を達成するために、本考案のプランジャ形電磁石においては、プラン ジャ及び呼び鉄の互いに向い合う面の一方及び他方にそれぞれ凸部及びこの凸部 が遊嵌する凹部を形設したものである。 In order to achieve the above object, in the plunger type electromagnet of the present invention, a convex portion and a concave portion into which the convex portion is loosely fitted are formed in one and the other of the surfaces of the plunger and the iron facing each other. is there.

【0008】[0008]

【作用】[Action]

前述した構成においては、プランジャと呼び鉄との互いに向い合う面の一方に 形設された凸部が他方の面に向って突出しているため、動作開始時、両者間の磁 束がこの凸部の先端周縁に集中し、初期吸引力が得やすくなり、凸部の高さを変 えることにより初期吸引力を調整でき、所望の初期吸引力を得ることが可能とな る。 In the above-mentioned configuration, since the convex portion formed on one of the surfaces of the plunger and the iron facing each other protrudes toward the other surface, the magnetic flux between the two at the start of operation is the convex portion. The initial suction force can be easily obtained by concentrating on the peripheral edge of the tip, and the initial suction force can be adjusted by changing the height of the convex portion, and the desired initial suction force can be obtained.

【0009】 また、動作終了段階では、凸部が凹部に遊嵌し、この時嵌まり込んだ部分にお ける磁束密度が高くなってこの間で吸引し合うため、プランジャと呼び鉄との間 の吸引力としての効果が減殺されることになり、吸引力が異常に大きくなること を回避でき、凸部の大きさ(径)を変えることにより吸引力を調整でき、負荷特 性に応じた吸引力を得ることが可能となる。In addition, at the end of the operation, the convex portion loosely fits into the concave portion, and the magnetic flux density in the fitted portion increases at this time, so that they are attracted to each other during this period. The effect of the suction force is diminished, it is possible to avoid the suction force from becoming abnormally large, and the suction force can be adjusted by changing the size (diameter) of the convex portion, and suction according to the load characteristics It becomes possible to gain power.

【0010】[0010]

【実施例】【Example】

実施例につき、図1ないし図4を用いて説明する。 これらの図面において、前記と同一符号は同一もしくは相当するものを示すも のとし、従来と異なる点は、プランジャ4の下面の中央部に外径D,高さHの円 柱状凸部6を一体に突設すると共に、呼び鉄3の上面の中央部に凸部6が入出自 在に遊嵌する凹部7を形成した点である。 An example will be described with reference to FIGS. 1 to 4. In these drawings, the same reference numerals as those used above indicate the same or corresponding ones. The difference from the conventional one is that a cylindrical convex portion 6 having an outer diameter D and a height H is integrally formed in the central portion of the lower surface of the plunger 4. In addition to projecting at the center, a convex portion 6 is formed in the central portion of the upper surface of the nominal iron 3 to form a concave portion 7 into which the convex portion 6 freely fits in and out.

【0011】 そして、開閉器投入時、電磁コイル2への通電を開始すると、この動作開始時 、図3に示すように、凸部6の先端部周縁と凹部7の開口部周縁との間に磁束が 集中し、これにより吸引力が発生し、コイル2への通電から吸引力が得られるま でに従来のような時間を要しなく、初期吸引力が得やすくなる。ここで、凸部6 の高さを変えることにより初期吸引力を調整することができる。Then, when the electromagnetic coil 2 is energized when the switch is turned on, at the start of this operation, as shown in FIG. 3, a gap is formed between the tip peripheral edge of the convex portion 6 and the peripheral edge of the opening portion of the concave portion 7. The magnetic flux concentrates, which causes an attractive force, which makes it easier to obtain the initial attractive force without the time required conventionally until the attractive force is obtained from energizing the coil 2. Here, the initial suction force can be adjusted by changing the height of the convex portion 6.

【0012】 その後、プランジャ4の吸引動作に伴なってプランジャ4,呼び鉄3間の吸引 力が増加し、動作終了段階になると、図4に示すように、凸部6の一部が凹部7 に嵌まり込むため、凸部6の外周面と凹部7の内周面との間の磁束密度が高くな り、この間で吸引し合う結果、プランジャ4に対する吸引力が減殺され、その動 作スピ−ドが抑制される。After that, as the suction force of the plunger 4 increases with the suction force between the plunger 4 and the nominal iron 3, when the operation end stage is reached, as shown in FIG. As a result, the magnetic flux density between the outer peripheral surface of the convex portion 6 and the inner peripheral surface of the concave portion 7 becomes high, and as a result of mutual attraction between them, the attractive force on the plunger 4 is diminished and the operating speed -Depression is suppressed.

【0013】 したがって、プランジャ4に対する吸引力は図2に示すように負荷特性に応じ た特性となり、特に動作完了段階で吸引力が減殺される結果、操作器機構部の負 荷力に対し余剰エネルギを小さくでき、動作完了時のプランジャ4と呼び鉄3と の当接時の衝撃力が大幅に緩和される。Therefore, the attraction force with respect to the plunger 4 has a characteristic according to the load characteristic as shown in FIG. Can be made smaller, and the impact force at the time of contact between the plunger 4 and the nominal iron 3 at the time of completion of the operation is greatly alleviated.

【0014】 ここで、プランジャ4の凸部6の径D及び高さHを任意に設定することにより 、プランジャ4の動作速度を動作開始から終了までほぼ一定にすることが可能で あり、吸引力をさらに負荷特性に従った特性とすることもできる。 なお、呼び鉄3に凸部を,プランジャ4に凹部をそれぞれ形設するようにして もよい。Here, by arbitrarily setting the diameter D and the height H of the convex portion 6 of the plunger 4, the operating speed of the plunger 4 can be made substantially constant from the start to the end of the operation, and the suction force Can further be a characteristic according to the load characteristic. It is also possible to form the convex portion on the nominal iron 3 and the concave portion on the plunger 4.

【0015】[0015]

【考案の効果】[Effect of the device]

本考案は、以上説明したように構成されているため、つぎに記載する効果を奏 する。 プランジャと呼び鉄との互いに向い合う面にそれぞれ凸部,凹部を形設したこ とにより、初期吸引力が得やすくなると同時に、動作終了段階での吸引力の増大 を抑制し、プランジャと呼び鉄との当接時の衝撃力を大幅に緩和することができ るものであり、しかも、凸部の形状(径,高さ)を変えることにより初期吸引力 やプランジャの動作速度を調整することができ、負荷特性に応じた吸引力を容易 に得ることができるものである。 Since the present invention is configured as described above, it has the following effects. By forming a convex portion and a concave portion on the mutually facing surfaces of the plunger and the nominal iron, the initial attractive force can be easily obtained, and at the same time, the increase in the attractive force at the end stage of the operation can be suppressed, and the plunger and the nominal iron can be suppressed. The impact force at the time of contact with can be significantly eased, and the initial suction force and the operating speed of the plunger can be adjusted by changing the shape (diameter, height) of the convex part. It is possible to easily obtain the suction force according to the load characteristics.

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

【図1】本考案によるプランジャ形電磁石の実施例を示
す断面図である。
FIG. 1 is a sectional view showing an embodiment of a plunger type electromagnet according to the present invention.

【図2】実施例の吸引力の特性図である。FIG. 2 is a characteristic diagram of the suction force of the example.

【図3】実施例の動作開始時における吸引動作説明図で
ある。
FIG. 3 is an explanatory diagram of a suction operation at the start of the operation of the embodiment.

【図4】実施例の動作完了時における吸引動作説明図で
ある。
FIG. 4 is an explanatory diagram of a suction operation when the operation of the embodiment is completed.

【図5】従来例を示す断面図である。FIG. 5 is a cross-sectional view showing a conventional example.

【図6】従来例の吸引力の特性図である。FIG. 6 is a characteristic diagram of a suction force of a conventional example.

【符号の説明】[Explanation of symbols]

1 ヨ−ク 2 電磁コイル 3 呼び鉄 4 プランジャ 6 凸部 7 凹部 1 Yoke 2 Electromagnetic Coil 3 Nominal Iron 4 Plunger 6 Projection 7 Recess

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 ソレノイド形電磁コイルの内底部に呼び
鉄を固定し、前記コイルへの通電によりプランジャを前
記コイルの内側に吸引するようにしたプランジャ形電磁
石において、 前記プランジャ及び前記呼び鉄の互いに向い合う面の一
方及び他方にそれぞれ凸部及び該凸部が遊嵌する凹部を
形設してなるプランジャ形電磁石。
1. A plunger type electromagnet in which a priming iron is fixed to the inner bottom portion of a solenoid type electromagnetic coil, and the plunger is attracted to the inside of the coil by energizing the coil. A plunger type electromagnet having a convex portion and a concave portion into which the convex portion is loosely fitted, formed on one and the other of the facing surfaces, respectively.
JP7111591U 1991-08-08 1991-08-08 Plunger type electromagnet Pending JPH0518005U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7111591U JPH0518005U (en) 1991-08-08 1991-08-08 Plunger type electromagnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7111591U JPH0518005U (en) 1991-08-08 1991-08-08 Plunger type electromagnet

Publications (1)

Publication Number Publication Date
JPH0518005U true JPH0518005U (en) 1993-03-05

Family

ID=13451245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7111591U Pending JPH0518005U (en) 1991-08-08 1991-08-08 Plunger type electromagnet

Country Status (1)

Country Link
JP (1) JPH0518005U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014203782A (en) * 2013-04-09 2014-10-27 パナソニック株式会社 Electromagnet device and electromagnetic relay using the same
JP2015122905A (en) * 2013-12-24 2015-07-02 株式会社キトー Brake motor and hoist
JP2016021395A (en) * 2014-07-11 2016-02-04 エルエス産電株式会社Lsis Co., Ltd. electromagnetic switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS552198B2 (en) * 1976-11-19 1980-01-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS552198B2 (en) * 1976-11-19 1980-01-18

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014203782A (en) * 2013-04-09 2014-10-27 パナソニック株式会社 Electromagnet device and electromagnetic relay using the same
JP2015122905A (en) * 2013-12-24 2015-07-02 株式会社キトー Brake motor and hoist
JP2016021395A (en) * 2014-07-11 2016-02-04 エルエス産電株式会社Lsis Co., Ltd. electromagnetic switch
US9754749B2 (en) 2014-07-11 2017-09-05 Lsis Co., Ltd. Magnetic switch

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