JP2009009813A - Electromagnetic contactor - Google Patents

Electromagnetic contactor Download PDF

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JP2009009813A
JP2009009813A JP2007169953A JP2007169953A JP2009009813A JP 2009009813 A JP2009009813 A JP 2009009813A JP 2007169953 A JP2007169953 A JP 2007169953A JP 2007169953 A JP2007169953 A JP 2007169953A JP 2009009813 A JP2009009813 A JP 2009009813A
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iron core
movable
movable iron
movable contact
support member
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Kuniyuki Furukawa
国幸 古川
Hideki Daishima
英樹 代島
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Fuji Electric Assets Management Co Ltd
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Fuji Electric Assets Management Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic contactor which suppresses oscillating transmission from a movable iron core to a movable contact support member, reduces the damage prevention and the contact erosion of each member, and provides long lifetime. <P>SOLUTION: The electromagnetic contactor includes: a substantially E-shaped stationary iron core 30 and the movable iron core 40; an electromagnetic coil 50 for driving the movable iron core; frames 10 and 20 for containing each member; a stationary contact 70 fixed on the frames; a movable contact 80 abutting on or separated from the stationary contact; the movable contact support member 81 attached with the movable iron core and the movable contact, and transmitting the movement of the movable iron core to the movable contact; and an elastic support mechanism 100 supporting the movable iron core to the movable contact support member via an elastic body. The elastic support mechanism includes the electromagnetic contactor having a support member 101 in which both end parts inserted into a through hole 44 formed on the movable core are protruded from the through hole and the elastic body 102 held by an elastic holding part 104 provided on the movable contact support member attached to both ends of the support member. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、フレームに固定された固定鉄心、及び、電磁コイルで駆動され固定鉄心との接触、離間を切換えられる可動鉄心を有する電磁接触器に関する。特に、固定鉄心と可動鉄心との接触時等に生ずる衝撃を緩和して耐久性の向上を図った電磁接触器に関する。   The present invention relates to an electromagnetic contactor having a fixed iron core fixed to a frame and a movable iron core that is driven by an electromagnetic coil and can be switched between contact and separation with the fixed iron core. In particular, the present invention relates to an electromagnetic contactor that is improved in durability by mitigating an impact that occurs at the time of contact between a fixed iron core and a movable iron core.

電磁接触器は、電磁コイルの吸引力を利用して固定鉄心と可動鉄心との接触、離間を切り換えて、電気回路の開閉を制御するものである。
このような電磁接触器は、一般に各鉄心を３本の突出部（脚部）を有するＥ字型に形成して各脚部の端面（接点面）を対向させて配置している。そして、各鉄心が金属バネ等の付勢部材により離間された状態と、中央脚の周りを周回する巻線を有する電磁コイルの吸着力で当接した状態とを切り換えることによって、可動接点と固定接点との導通（接触）、遮断（離間）を制御する。 The electromagnetic contactor controls the opening and closing of the electric circuit by switching the contact and separation between the fixed iron core and the movable iron core using the attractive force of the electromagnetic coil.
In such an electromagnetic contactor, generally, each iron core is formed in an E shape having three projecting portions (leg portions) and the end surfaces (contact surfaces) of the respective leg portions are arranged to face each other. The movable core is fixed to the movable contact by switching between a state where each iron core is separated by a biasing member such as a metal spring and a state where the core is in contact with the attracting force of an electromagnetic coil having a winding around the center leg. Controls conduction (contact) and interruption (separation) with the contact.

このような電磁接触器において、可動鉄心は可動接点を支持する可動接点支え部材に取り付けられる。可動接点支え部材は、フレームに対して移動可能に設けられるとともに、可動鉄心の動きを可動接点に伝達する部材である。
従来、可動鉄心とクロスバー（可動接点支え部材）との位置決めを正確に行うため、相互に係合する凹凸部を設けるとともに、バネ体によって両者を加圧接触させたものが知られている（例えば、特許文献１参照）。
実開昭５９−７９９４９号公報 In such an electromagnetic contactor, the movable iron core is attached to a movable contact support member that supports the movable contact. The movable contact support member is a member that is provided so as to be movable with respect to the frame and that transmits the movement of the movable iron core to the movable contact.
Conventionally, in order to accurately position the movable iron core and the cross bar (movable contact support member), there is known a structure in which concave and convex portions that are engaged with each other are provided and both are pressed and contacted by a spring body ( For example, see Patent Document 1).
Japanese Utility Model Publication No.59-79949

しかし、上述した従来技術の電磁接触器では、可動鉄心と可動接点支え部材とが剛体どうしで直に接していることから、固定鉄心と可動鉄心とが衝突し、又は、可動鉄心が固定鉄心から釈放されて生じる衝撃が可動鉄心から可動接点支え部材に伝達しやすく、可動接点支え部材の耐久性を確保することが難しかった。また、可動接点支えに衝撃が伝達されやすいことから、固定接点と加圧接触している可動接点にも衝撃が伝達されやすく、接点の消耗が促進されるため、接点のボリュームを大きくする必要があった。
これに対し、例えば可動鉄心と可動接点支えとの間に、ゴム等の弾性体シートを挟持することも考えられるが、シート状の弾性体を緩衝材とする場合には、電磁接触器の動作方向における寸法に制約があることから、十分な緩衝効果を得にくかった。 However, in the above-described conventional electromagnetic contactor, since the movable iron core and the movable contact support member are in direct contact with each other between the rigid bodies, the fixed iron core and the movable iron core collide, or the movable iron core is separated from the fixed iron core. The impact generated by the release is easily transmitted from the movable iron core to the movable contact support member, and it is difficult to ensure the durability of the movable contact support member. In addition, since the impact is easily transmitted to the movable contact support, the impact is also easily transmitted to the movable contact that is in pressure contact with the fixed contact, and the consumption of the contact is promoted. Therefore, it is necessary to increase the contact volume. there were.
On the other hand, for example, an elastic sheet such as rubber may be sandwiched between the movable iron core and the movable contact support. However, when the sheet-like elastic body is used as a buffer material, the operation of the electromagnetic contactor It was difficult to obtain a sufficient buffering effect due to restrictions on dimensions in the direction.

本発明は、上述した問題に鑑みなされたものであって、可動鉄心から可動接点支え部材への振動伝達を抑制して、各部材の破損防止及び接点消耗の低減を図り長寿命化した電磁接触器を提供することを課題とする。   The present invention has been made in view of the above-described problems, and suppresses vibration transmission from the movable iron core to the movable contact support member to prevent damage to each member and reduce contact consumption, thereby extending the life of the electromagnetic contact. It is an object to provide a vessel.

上記の課題を解決するため、本発明の電磁接触器は、中央脚及びこの中央脚を挟んで配置された外側脚を有する略Ｅ字型の固定鉄心と、前記固定鉄心に当接及び離間するように配置され、該固定鉄心の前記中央脚及び前記外側脚とそれぞれ対向配置された中央脚及び外側脚を有する略Ｅ字型の可動鉄心と、前記固定鉄心の中央脚及び前記可動鉄心の中央脚の周囲を周回する巻線を有し、前記可動鉄心を駆動する電磁コイルと、前記各部材を収容するフレームと、前記フレームに固定された固定接点と、前記固定接点に当接又は離間するように配置された可動接点と、前記フレームに対して相対移動可能に設けられ前記可動鉄心及び前記可動接点が装着されるとともに該可動鉄心の動きを前記可動接点に伝達する可動接点支え部材とを備え、前記可動鉄心と前記可動接点支え部材が連結部材により一体に連結されている電磁接触器であって、前記可動鉄心を前記可動接点支え部材に弾性体を介して支持する弾性支持機構を備えるとともに、前記弾性支持機構は、前記可動鉄心の中央脚に厚さ方向に形成された貫通孔に挿入されその両端部が該貫通孔から突き出した状態で配置される支持部材と、前記支持部材の両端に装着されるとともに前記可動接点支え部材に設けられた弾性体保持部に保持される弾性体とを有することを特徴とする。   In order to solve the above-described problems, an electromagnetic contactor according to the present invention includes a substantially E-shaped fixed iron core having a central leg and an outer leg arranged with the central leg interposed therebetween, and abuts and separates from the fixed iron core. A substantially E-shaped movable iron core having a central leg and an outer leg disposed opposite to the central leg and the outer leg of the fixed iron core, respectively, and the central leg of the fixed iron core and the center of the movable iron core An electromagnetic coil that drives the movable iron core, a frame that houses each member, a fixed contact fixed to the frame, and abutting or separating from the fixed contact And a movable contact support member provided so as to be relatively movable with respect to the frame, to which the movable iron core and the movable contact are mounted, and to transmit the movement of the movable iron core to the movable contact. Prepared, before An electromagnetic contactor in which a movable iron core and the movable contact support member are integrally connected by a connecting member, and comprising an elastic support mechanism for supporting the movable iron core on the movable contact support member via an elastic body, The elastic support mechanism is attached to a support member that is inserted into a through hole formed in a thickness direction in the center leg of the movable iron core and is disposed in a state in which both end portions protrude from the through hole, and is attached to both ends of the support member. And an elastic body held by an elastic body holding portion provided on the movable contact support member.

本発明によれば、可動鉄心は支持部材の両端部に設けられた弾性体を介して可動接点支え部材に支持されることから、可動鉄心に生じた衝撃は弾性体の緩衝効果によって緩和され、可動接点支え部材側への伝達は抑制される。これによって、可動接点支え部材の衝撃による破損を防止することができる。また、可動接点への衝撃の伝達も低減されることから、可動接点と固定接点との摺動による消耗を抑制することができ、電磁接触器を長寿命化することができる。
また、可動鉄心からフレーム側への衝撃の伝搬を低減して、電磁接触器の作動時における騒音や振動を低減できる。 According to the present invention, since the movable iron core is supported by the movable contact support member via the elastic bodies provided at both ends of the support member, the impact generated in the movable iron core is mitigated by the buffer effect of the elastic body, Transmission to the movable contact support member side is suppressed. As a result, it is possible to prevent the movable contact support member from being damaged due to an impact. In addition, since the transmission of impact to the movable contact is reduced, wear due to sliding between the movable contact and the fixed contact can be suppressed, and the life of the electromagnetic contactor can be extended.
Further, it is possible to reduce the propagation of impact from the movable iron core to the frame side, thereby reducing noise and vibration during operation of the magnetic contactor.

本発明の電磁接触器は、前記弾性体は、前記可動鉄心に対して間隔を隔てて対向して配置される構成とすることができる。
これによれば、可動鉄心から弾性体への衝撃の伝達を低減でき、上述した緩衝効果を向上することができる。また、弾性体に可動鉄心の熱が伝達しにくくなることから、弾性体の熱劣化を防止できる。 In the electromagnetic contactor according to the present invention, the elastic body may be arranged to face the movable iron core with a space therebetween.
According to this, the transmission of the impact from the movable iron core to the elastic body can be reduced, and the above-described buffer effect can be improved. Moreover, since it becomes difficult to transmit the heat of a movable iron core to an elastic body, the thermal deterioration of an elastic body can be prevented.

本発明の電磁接触器は、前記可動鉄心と前記弾性体との間にわたして設けられた脱落防止部材と、前記可動接点支え部材に設けられ、該可動接点支え部材への前記可動鉄心の装着時に前記弾性体をたわませることによって前記脱落防止部材を退避させる斜面部、及び、前記可動鉄心の装着後に前記脱落防止部材と係合し該可動鉄心の脱落を防止する係合面部を有する突起部と、を含む脱落防止機構を有する構成とすることができる。
これによれば、簡単な構成によって可動鉄心の可動接点支え部材からの脱落を防止することができる。 The electromagnetic contactor of the present invention is provided with a drop-off preventing member provided between the movable iron core and the elastic body, and provided on the movable contact support member, and the movable iron core is attached to the movable contact support member. A protrusion having a slope portion that retracts the drop-off prevention member by bending the elastic body, and an engagement surface portion that engages with the drop-off prevention member after the movable iron core is mounted to prevent the movable iron core from falling off. And a drop-off preventing mechanism including the portion.
According to this, it is possible to prevent the movable iron core from falling off the movable contact support member with a simple configuration.

以上のように、本発明によれば、可動鉄心の貫通孔に挿入された支持部材の両端に装着された弾性体を介して可動鉄心を可動接点支え部材に装着することによって、可動鉄心から可動接点支え部材への衝撃の伝搬を抑制し、各部材の破損防止及び接点消耗の低減を図り長寿命化した電磁接触器を提供することができる。   As described above, according to the present invention, the movable iron core can be moved from the movable iron core by attaching the movable iron core to the movable contact support member via the elastic bodies attached to both ends of the support member inserted into the through hole of the movable iron core. It is possible to provide an electromagnetic contactor that suppresses propagation of impact to the contact support member, prevents damage to each member, reduces contact wear, and has a long life.

以下、本発明を適用した電磁接触器の実施形態について、図面等を参照しつつ説明する。
先ず、実施形態に先立ち、本発明の参考例について説明する。この参考例は、本発明が適用される前提となる従来技術の電磁接触器である。
図１は、参考例の電磁接触器の外観斜視図である。
図２は、参考例の電磁接触器の断面図であって、図１のII−II部矢視断面を示す。
図３は、参考例の電磁接触器の断面図であって、図１及び図２のIII−III部矢視断面を示す。
図４は、参考例の電磁接触器の分解斜視図である。
なお、各図面において、電磁接触器の動作方向（可動鉄心のストローク方向。奥行き方向とも称する。）を上下方向として図示し、以下の説明において上下方向とは図中における上下方向を示すものとする。 Hereinafter, embodiments of an electromagnetic contactor to which the present invention is applied will be described with reference to the drawings.
First, prior to the embodiment, a reference example of the present invention will be described. This reference example is a conventional electromagnetic contactor to which the present invention is applied.
FIG. 1 is an external perspective view of a magnetic contactor of a reference example.
FIG. 2 is a cross-sectional view of the electromagnetic contactor of the reference example, and shows a cross section taken along the line II-II in FIG.
FIG. 3 is a cross-sectional view of the electromagnetic contactor of the reference example, and shows a cross section taken along the line III-III in FIGS. 1 and 2.
FIG. 4 is an exploded perspective view of the electromagnetic contactor of the reference example.
In each drawing, the operation direction of the magnetic contactor (the stroke direction of the movable iron core; also referred to as the depth direction) is shown as the vertical direction, and in the following description, the vertical direction indicates the vertical direction in the figure. .

電磁接触器１は、下部フレーム１０、上部フレーム２０、固定鉄心３０、可動鉄心４０、電磁コイル５０、復帰バネ６０、固定接触子７０、可動接触子８０、固定鉄心弾性支持機構９０等を備えている。
下部フレーム１０及び上部フレーム２０は、電磁接触器１の各部材が装着され支持される基部である。下部フレーム１０及び上部フレーム２０は、固定鉄心３０や可動鉄心４０等を収容する上下２つ割りのケースとして形成されている。
また、上部フレーム２０の上面部には、着脱式の接点カバー２１が設けられている。
さらに、下部フレーム１０と上部フレーム２０との接合部には、これらを締結する締付線バネ２２が設けられている。 The magnetic contactor 1 includes a lower frame 10, an upper frame 20, a fixed iron core 30, a movable iron core 40, an electromagnetic coil 50, a return spring 60, a fixed contact 70, a movable contact 80, a fixed iron core elastic support mechanism 90, and the like. Yes.
The lower frame 10 and the upper frame 20 are bases on which the members of the magnetic contactor 1 are mounted and supported. The lower frame 10 and the upper frame 20 are formed as an upper and lower split case that accommodates the fixed iron core 30, the movable iron core 40, and the like.
A detachable contact cover 21 is provided on the upper surface of the upper frame 20.
Furthermore, a fastening wire spring 22 is provided at a joint portion between the lower frame 10 and the upper frame 20 to fasten them.

固定鉄心３０は、複数のプレートをリベットで固定した積層鉄心であり、下部フレーム１０内に収容されている。この固定鉄心３０は、弾性支持機構９０を介して下部フレーム１０に対してフローティング状態で装着されている。
固定鉄心３０は、電磁接触器１の動作方向に沿って伸びた中央脚３１と、中央脚３１を挟んで配置された一対の外側脚３２とを備えている。また、中央脚３１と外側脚３２とは、動作方向と直交した方向（図中横方向）に沿って伸びた連結部３３によって連結されている。これらの中央脚３１、外側脚３２、連結部３３は一体的に形成され、その結果固定鉄心３０は略Ｅ字型に形成されている。
さらに、固定鉄心３０の外側脚３２の可動鉄心４０側の端部には、ＡＣ電源による電磁コイルの吸引力の変動を緩和するための隈取コイル（シェーディングコイル）３２ａが設けられている。 The fixed iron core 30 is a laminated iron core in which a plurality of plates are fixed with rivets, and is accommodated in the lower frame 10. The fixed iron core 30 is mounted in a floating state with respect to the lower frame 10 via an elastic support mechanism 90.
The fixed iron core 30 includes a central leg 31 extending along the operation direction of the electromagnetic contactor 1 and a pair of outer legs 32 arranged with the central leg 31 interposed therebetween. Further, the central leg 31 and the outer leg 32 are connected by a connecting portion 33 extending along a direction (lateral direction in the drawing) orthogonal to the operation direction. The central leg 31, the outer leg 32, and the connecting portion 33 are integrally formed. As a result, the fixed iron core 30 is formed in a substantially E shape.
Furthermore, a coiling coil (shading coil) 32a is provided at the end of the outer leg 32 of the fixed iron core 30 on the side of the movable iron core 40 to mitigate fluctuations in the attractive force of the electromagnetic coil caused by the AC power supply.

また、固定鉄心３０には、後述する固定鉄心弾性支持機構９０の支持板９１が挿入される貫通孔３４が形成されている。貫通孔３４は、連結部３３の幅方向（各外側脚３２を結んだ方向）における中央部に設けられている。そして、貫通孔３４は、中央脚３１の背面部に沿って、上述した幅方向とはほぼ直交する方向に伸びている。   The fixed core 30 is formed with a through hole 34 into which a support plate 91 of a fixed core elastic support mechanism 90 described later is inserted. The through hole 34 is provided at the center in the width direction of the connecting portion 33 (the direction in which the outer legs 32 are connected). And the through-hole 34 is extended along the back surface part of the center leg 31 in the direction substantially orthogonal to the width direction mentioned above.

可動鉄心４０は、複数のプレートをリベットで固定した積層鉄心である。なお、本明細書、請求の範囲等において、可動鉄心の厚さ方向とは、このプレートが積層される方向を意味するものとする。
可動鉄心４０は、上部フレーム２０内に収容され、電磁接触器１の動作方向に沿って固定鉄心３０に対して上下方向に移動可能に支持されている。可動鉄心４０は、固定鉄心３０の中央脚３１及び外側脚３２とそれぞれ対向して配置された中央脚４１及び外側脚４２を備えている。また、可動鉄心４０は、中央脚４１及び外側脚４２を連結するとともに、これらと一体的に形成された連結部４３を備え、固定鉄心３０に対して対称的に配置された略Ｅ字型に形成されている。
また可動鉄心４０は、中央脚４１の根元に可動鉄心４０の厚さ方向に沿って形成された貫通孔４４に挿入される帯板状の板バネである連結板４５が設けられている。貫通孔４４は、長手方向が連結部４３の延在方向にほぼ沿って配置された矩形の長孔である。また、連結板４５も幅方向が貫通孔４４の長手方向とほぼ一致するように配置される。 The movable iron core 40 is a laminated iron core in which a plurality of plates are fixed with rivets. In the present specification, claims, and the like, the thickness direction of the movable core means the direction in which the plates are laminated.
The movable iron core 40 is accommodated in the upper frame 20 and supported so as to be movable in the vertical direction with respect to the fixed iron core 30 along the operation direction of the magnetic contactor 1. The movable iron core 40 includes a central leg 41 and an outer leg 42 that are arranged to face the central leg 31 and the outer leg 32 of the fixed iron core 30, respectively. The movable iron core 40 connects the central leg 41 and the outer leg 42 and includes a connecting portion 43 formed integrally therewith. The movable iron core 40 has a substantially E-shape arranged symmetrically with respect to the fixed iron core 30. Is formed.
Further, the movable iron core 40 is provided with a connecting plate 45 which is a strip-like plate spring inserted into a through hole 44 formed along the thickness direction of the movable iron core 40 at the base of the central leg 41. The through hole 44 is a rectangular long hole whose longitudinal direction is arranged substantially along the extending direction of the connecting portion 43. Further, the connecting plate 45 is also arranged so that the width direction substantially coincides with the longitudinal direction of the through hole 44.

電磁コイル５０は、電磁力によって固定鉄心３０と可動鉄心４０とを吸着させる磁界を発生する。電磁コイル５０は、巻線５１及びボビン５２を備えている。巻線５１は、固定鉄心３０及び可動鉄心４０の中央脚３１，４１と外側脚３２，４２との間を通り中央脚３１，４１の周囲を周回する。ボビン５２は、この巻線５１が巻き付けられるものである。ボビン５２は、その内径側に固定鉄心３０及び可動鉄心４０の中央脚３１，４１が挿入され、外径側に巻線５１が巻きつけられる円筒部を有している。また、ボビン５２には、この円筒部の両端部から外径側にフランジ状に張り出したフランジ部が設けられている。   The electromagnetic coil 50 generates a magnetic field that attracts the fixed iron core 30 and the movable iron core 40 by electromagnetic force. The electromagnetic coil 50 includes a winding 51 and a bobbin 52. The winding 51 passes between the center legs 31 and 41 and the outer legs 32 and 42 of the fixed iron core 30 and the movable iron core 40 and circulates around the center legs 31 and 41. The bobbin 52 is around which the winding 51 is wound. The bobbin 52 has a cylindrical portion in which the center legs 31 and 41 of the fixed iron core 30 and the movable iron core 40 are inserted on the inner diameter side, and the winding 51 is wound on the outer diameter side. Further, the bobbin 52 is provided with a flange portion projecting in a flange shape from both ends of the cylindrical portion toward the outer diameter side.

復帰バネ６０は、可動鉄心４０を固定鉄心３０から離間する方向に付勢する付勢手段である。復帰バネ６０は、例えば、電磁コイル５０のボビン５２の上面と可動鉄心４０との間にわたして設けられたコイルバネである。   The return spring 60 is a biasing unit that biases the movable iron core 40 in a direction away from the fixed iron core 30. The return spring 60 is, for example, a coil spring provided between the upper surface of the bobbin 52 of the electromagnetic coil 50 and the movable iron core 40.

固定接触子７０及び可動接触子８０は、相互に当接、離間することによって回路の接続、遮断を切り換える電気接点である。
固定接触子７０は、接点部が上向きの状態で、上部フレーム２０に固定されている。
可動接触子８０は、可動鉄心４０の背面部（上面部）に固定された可動接点支え８１に固定されている。可動接点支え８１は、その上部に可動接触子８０が固定される枠状部が形成されている。この枠状部は、可動鉄心４０の厚さ方向に沿って複数配列されている。また、可動接点支え８１の下部には、可動鉄心４０が固定される。この、可動鉄心４０と可動接点支え８１との固定部については、後に詳しく説明する。
可動接触子８０は、接点部が下向きかつ固定接触子７０の接点部と対向した状態で配置されている。また、可動接触子８０の上方側には、接触バネ８２が設けられている。
固定接触子７０及び可動接触子８０は、固定鉄心３０及び可動鉄心４０が相互に離間した状態では離間し、固定鉄心３０及び可動鉄心４０が接触した状態では接触する。
また、上述した固定接触子７０及び可動接触子８０にそれぞれ隣接して、補助固定接触子７５及び補助可動接触子８５がそれぞれ設けられている。 The stationary contact 70 and the movable contact 80 are electrical contacts that switch between connection and disconnection of the circuit by abutting and separating from each other.
The stationary contact 70 is fixed to the upper frame 20 with the contact portion facing upward.
The movable contact 80 is fixed to a movable contact support 81 fixed to the back surface (upper surface) of the movable iron core 40. The movable contact support 81 is formed with a frame-like portion on which the movable contact 80 is fixed. A plurality of the frame-like portions are arranged along the thickness direction of the movable iron core 40. The movable iron core 40 is fixed to the lower part of the movable contact support 81. The fixed portion between the movable iron core 40 and the movable contact support 81 will be described in detail later.
The movable contact 80 is arranged with the contact portion facing downward and facing the contact portion of the fixed contact 70. A contact spring 82 is provided above the movable contact 80.
The fixed contact 70 and the movable contact 80 are separated when the fixed iron core 30 and the movable iron core 40 are separated from each other, and are in contact with each other when the fixed iron core 30 and the movable iron core 40 are in contact with each other.
Further, an auxiliary fixed contact 75 and an auxiliary movable contact 85 are provided adjacent to the above-described fixed contact 70 and movable contact 80, respectively.

弾性支持機構９０は、支持板９１、支持板保持弾性体９２、弾性体シート９３等を備えている。
支持板９１は、固定鉄心３０の貫通孔３４に挿入されるとともに、その両端部を支持板保持弾性体９２によって下部フレーム１０に固定される。支持板９１は、幅方向がほぼ水平方向（動作方向と直交する方向）に沿わせて配置された帯状の平板として形成されている。支持板９１は、その長手方向における両端部が固定鉄心３０の貫通孔３４からそれぞれ突き出した状態で使用される。 The elastic support mechanism 90 includes a support plate 91, a support plate holding elastic body 92, an elastic sheet 93, and the like.
The support plate 91 is inserted into the through-hole 34 of the fixed iron core 30 and both ends thereof are fixed to the lower frame 10 by the support plate holding elastic body 92. The support plate 91 is formed as a belt-like flat plate whose width direction is arranged along a substantially horizontal direction (a direction orthogonal to the operation direction). The support plate 91 is used in a state in which both end portions in the longitudinal direction protrude from the through holes 34 of the fixed iron core 30.

支持板保持弾性体９２は、例えばゴム系等の弾性を有する材料によってブロック状に形成されている。この支持板保持弾性体９２には、支持板９１の端部が挿入され固定される切込部が形成されている。支持板保持弾性体９２は、支持板９１の端部が挿入された状態で、下部フレーム１０とボビン５２の下面から突き出して形成された凸部５２ａとの間に挟持される。   The support plate holding elastic body 92 is formed in a block shape from an elastic material such as rubber. The support plate holding elastic body 92 is formed with a cut portion into which the end portion of the support plate 91 is inserted and fixed. The support plate holding elastic body 92 is sandwiched between the lower frame 10 and a convex portion 52 a formed by protruding from the lower surface of the bobbin 52 with the end portion of the support plate 91 inserted.

弾性体シート９３は、例えばゴム系等の弾性を有する材料によってシート状に形成され、固定鉄心３０の背面部と、この背面部と対向する下部フレーム１０の内面部に形成された凹部１１との間に配置されている。弾性体シート９３は、下部フレーム１０側に貼付され、通常時には固定鉄心３０の背面部と微小な空隙を隔てて配置されている。固定鉄心３０に可動鉄心４０が衝突し、固定鉄心３０が変位した場合には、弾性体シート９３は、固定鉄心３０の背面部のほぼ全面と当接するようになっている。
弾性体シート９３の厚さは、電磁接触器１のサイズにもよるが、例えば、０．５〜１ｍｍ程度に設定されている。 The elastic body sheet 93 is formed into a sheet shape by a material having elasticity such as rubber, for example, and includes a back surface portion of the fixed iron core 30 and a recess portion 11 formed on the inner surface portion of the lower frame 10 facing the back surface portion. Arranged between. The elastic body sheet 93 is affixed to the lower frame 10 side, and is usually arranged with a small gap from the back surface of the fixed iron core 30. When the movable iron core 40 collides with the fixed iron core 30 and the fixed iron core 30 is displaced, the elastic sheet 93 comes into contact with almost the entire back surface of the fixed iron core 30.
The thickness of the elastic sheet 93 is set to, for example, about 0.5 to 1 mm, although it depends on the size of the electromagnetic contactor 1.

次に、上述した参考例の電磁接触器における可動鉄心４０と可動接点支え８１との固定箇所について詳細に説明する。
図５は、参考例の可動鉄心を可動接点支えから取り外した状態を示す分解斜視図である。
図６は、参考例の可動鉄心と可動接点支えとを接続した状態を示す外観斜視図である。
図７は、参考例の可動鉄心と可動接点支えとを接続した状態を示す正面図（電磁接触器の動作方向及び可動鉄心の厚さ方向と直交する方向から見た図）である。 Next, the fixed location of the movable iron core 40 and the movable contact support 81 in the electromagnetic contactor of the reference example described above will be described in detail.
FIG. 5 is an exploded perspective view showing a state where the movable iron core of the reference example is removed from the movable contact support.
FIG. 6 is an external perspective view showing a state in which the movable iron core of the reference example and the movable contact support are connected.
FIG. 7 is a front view showing a state in which the movable core of the reference example and the movable contact support are connected (viewed from a direction orthogonal to the operation direction of the electromagnetic contactor and the thickness direction of the movable core).

図５に示すように、可動接点支え８１には、可動鉄心４０から突出した連結板４５の両端部を保持する保持部８１ａが設けられている。
保持部８１ａは、可動接点支え８１の可動鉄心４０側の面部から突出した一対の突起であって、可動鉄心４０をその厚さ方向に挟んで対向するように配置されている。保持部８１ａには、他の保持部８１ａと対向する面部に、電磁接触器１の動作方向と直交する方向に伸びた溝部が形成されている。この溝部は一方の端部が閉塞されるとともに他方の端部が開放されている。連結板４５の端部は、この溝部の開放側の端部から挿入される。
また、連結板４５は、可動鉄心４０を可動接点支え８１に装着した状態では、可動鉄心４０を可動接点支え８１側に加圧接触させる板バネとして機能する。 As shown in FIG. 5, the movable contact support 81 is provided with a holding portion 81 a that holds both ends of the connecting plate 45 protruding from the movable iron core 40.
The holding portion 81a is a pair of protrusions protruding from the surface portion of the movable contact support 81 on the movable iron core 40 side, and is disposed so as to be opposed to each other with the movable iron core 40 sandwiched in the thickness direction. In the holding portion 81a, a groove portion extending in a direction orthogonal to the operation direction of the electromagnetic contactor 1 is formed on a surface portion facing the other holding portion 81a. The groove is closed at one end and open at the other end. The end of the connecting plate 45 is inserted from the open end of the groove.
Further, the connecting plate 45 functions as a leaf spring that pressurizes and contacts the movable iron core 40 to the movable contact support 81 side when the movable iron core 40 is mounted on the movable contact support 81.

次に、本発明を適用した電磁接触器の実施形態について説明する。以下、上述した参考例と実質的に共通する箇所については同じ符号を付して説明を省略し、主に相違点について説明する。
本実施形態の電磁接触器は、参考例の電磁接触器における可動鉄心４０の連結板４５及び可動接点支え８１の保持部８１ａに代えて、以下説明する可動鉄心弾性支持機構１００を備えている。この可動鉄心弾性支持機構１００は、可動鉄心４０を可動接点支え８１に弾性体を介して装着するものである。
可動鉄心弾性支持機構１００は、可動鉄心４０に設けられる連結板１０１、弾性リング１０２、ピン１０３を有し、さらに可動接点支え８１に設けられる弾性リング保持部１０４、抜け止め用突起１０５等を備えている。 Next, an embodiment of an electromagnetic contactor to which the present invention is applied will be described. In the following, portions that are substantially the same as those in the reference example described above are denoted by the same reference numerals, description thereof is omitted, and differences are mainly described.
The electromagnetic contactor of this embodiment includes a movable core elastic support mechanism 100 described below in place of the connecting plate 45 of the movable iron core 40 and the holding portion 81a of the movable contact support 81 in the electromagnetic contactor of the reference example. The movable iron core elastic support mechanism 100 is for mounting the movable iron core 40 on the movable contact support 81 via an elastic body.
The movable core elastic support mechanism 100 includes a connecting plate 101 provided on the movable iron core 40, an elastic ring 102, and a pin 103, and further includes an elastic ring holding portion 104 provided on the movable contact support 81, a retaining protrusion 105, and the like. ing.

図８は、本実施形態の電磁接触器の断面図であって、参考例における図２に相当する断面を示している。
図９は、本実施形態の可動鉄心から連結板、弾性リング、ピンを取り外した状態を示す分解斜視図である。
図１０は、本実施形態の弾性リングの外観斜視図である。
図１１は、本実施形態の可動鉄心を可動接点支えから取り外した状態を示す分解斜視図である。
図１２は、本実施形態の可動鉄心と可動接点支えとを接続した状態を示す外観斜視図である。
図１３は、本実施形態の可動鉄心と可動接点支えとを接続した状態を示す正面図である。 FIG. 8 is a cross-sectional view of the electromagnetic contactor of the present embodiment, showing a cross-section corresponding to FIG. 2 in the reference example.
FIG. 9 is an exploded perspective view showing a state in which the connecting plate, the elastic ring, and the pin are removed from the movable iron core of the present embodiment.
FIG. 10 is an external perspective view of the elastic ring of the present embodiment.
FIG. 11 is an exploded perspective view showing a state in which the movable iron core of this embodiment is removed from the movable contact support.
FIG. 12 is an external perspective view showing a state in which the movable iron core and the movable contact support of this embodiment are connected.
FIG. 13 is a front view showing a state in which the movable iron core and the movable contact support of this embodiment are connected.

連結板１０１は、可動鉄心４０の貫通孔４４に挿入される矩形平板又は帯板状の部材である。連結板１０１は、その長手方向における両端部が貫通孔４４からそれぞれ突出した状態で用いられる。連結板１０１は、その幅方向が貫通孔４４の長手方向（連結部４３の延在方向）にほぼ沿って配置される。
弾性リング１０２は、連結板１０１の両端部にそれぞれ装着される弾性部材であって、連結板１０１及び可動鉄心４０を可動接点支え８１に対して弾性的に支持するものである。弾性リング１０２は、例えばゴム系等の弾性を有する材料によって形成されている。図１０に示すように、弾性リング１０２は、その外形がほぼ矩形のブロック状に形成され、その中央部に、連結板１０１が挿入される開口１０２ａが形成されている。開口１０２ａは、連結板１０１の横断面形状に適合した矩形の長孔として形成されている。また、開口１０２ａの上部には、ピン１０３が挿入される開口１０２ｂが形成されている。開口１０２ｂは、ピン１０３の外径と実質的に同じ内径を有する丸孔として形成されている。 The connecting plate 101 is a rectangular flat plate or band plate member inserted into the through hole 44 of the movable iron core 40. The connecting plate 101 is used in a state in which both end portions in the longitudinal direction protrude from the through holes 44. The width direction of the connecting plate 101 is arranged substantially along the longitudinal direction of the through hole 44 (extending direction of the connecting portion 43).
The elastic ring 102 is an elastic member that is attached to each end of the connecting plate 101, and elastically supports the connecting plate 101 and the movable iron core 40 with respect to the movable contact support 81. The elastic ring 102 is formed of an elastic material such as rubber. As shown in FIG. 10, the elastic ring 102 is formed in a substantially rectangular block shape, and an opening 102 a into which the connecting plate 101 is inserted is formed at the center. The opening 102 a is formed as a rectangular long hole adapted to the cross-sectional shape of the connecting plate 101. In addition, an opening 102b into which the pin 103 is inserted is formed above the opening 102a. The opening 102 b is formed as a round hole having an inner diameter substantially the same as the outer diameter of the pin 103.

ピン１０３は、直線状に伸びた円柱状の部材であって、可動鉄心４０の背面部に形成された凹部４０ａ内に嵌め込まれるものである。このピン１０３は、抜け止め用突起１０５と協働して可動鉄心４０の可動接点支え８１からの脱落を防止する脱落防止機構として機能する脱落防止部材である。凹部４０ａは、可動鉄心４０の背面部（中央脚４１の裏側の面部）を凹ませて形成されたＶ字状の溝であって、可動鉄心４０の厚さ方向に沿って形成されている。ピン１０３は、その両端部が可動鉄心４０から突出した状態でこの凹部４０ａ内に嵌め込まれる。ピン１０３の両端部は、弾性リング１０２の開口１０２ｂに挿入される。   The pin 103 is a columnar member that extends linearly, and is fitted into a recess 40 a formed on the back surface of the movable core 40. The pin 103 is a drop-off prevention member that functions as a drop-off prevention mechanism that prevents the movable iron core 40 from dropping from the movable contact support 81 in cooperation with the drop-off preventing projection 105. The concave portion 40 a is a V-shaped groove formed by denting the back surface portion of the movable core 40 (the surface portion on the back side of the central leg 41), and is formed along the thickness direction of the movable core 40. The pin 103 is fitted into the recess 40 a with both ends protruding from the movable core 40. Both end portions of the pin 103 are inserted into the openings 102 b of the elastic ring 102.

弾性リング保持部１０４は、可動接点支え８１の可動鉄心４０側の面部から突出した一対の突起であって、可動鉄心４０をその厚さ方向に挟んで対向するように配置されている。弾性リング保持部１０４には、他の弾性リング保持部１０４と対向する面部に、電磁接触器の動作方向と直交する方向に伸び、弾性リング１０２が挿入される溝部が形成されている。この溝部は、一方の端部が閉塞されるとともに、他方の端部が開放されている。弾性リング１０２は、この溝部の開放側の端部から挿入される。
また、図１３に示すように、弾性リング保持部１０４は、弾性リング１０２を、可動鉄心４０に対して間隔を隔てた状態で保持する。 The elastic ring holding portion 104 is a pair of protrusions protruding from the surface portion of the movable contact support 81 on the movable iron core 40 side, and is disposed so as to be opposed to each other with the movable iron core 40 sandwiched in the thickness direction. In the elastic ring holding part 104, a groove part is formed on a surface part facing the other elastic ring holding part 104, extending in a direction perpendicular to the operation direction of the electromagnetic contactor and into which the elastic ring 102 is inserted. The groove is closed at one end and open at the other end. The elastic ring 102 is inserted from the open end of the groove.
Further, as shown in FIG. 13, the elastic ring holding portion 104 holds the elastic ring 102 in a state of being spaced from the movable iron core 40.

抜け止め用突起１０５は、可動接点支え８１の可動鉄心４０側の面部から突出したタブ状の部分であり、電磁接触器の使用時において弾性リング保持部１０４と可動鉄心４０との間に挟まれるように、弾性リング保持部１０４と隣接して配置されている。
抜け止め用突起１０５は、図１１に示すように、弾性リング保持部１０４の溝部と平行する方向に伸びて形成され、溝部の開口端付近では、この開口端から閉塞端側への距離に応じて突出高さが連続的に増加する斜面部１０５ａが形成されている。この斜面部１０５ａは、弾性リング保持部１０４の溝部の中央部付近において終了する。一方、抜け止め用突起１０５の溝部閉塞端側の端部は、電磁接触器の動作方向にほぼ沿って伸びるとともに、ピン１０３と係合してその脱落を防止する係合面部１０５ｂが形成されている。
また、図１３に示すように、抜け止め用突起１０５は、電磁接触器の使用時において、可動鉄心４０と弾性リング１０２とが接触しないように仕切る仕切り板としても機能する。 The retaining protrusion 105 is a tab-shaped portion protruding from the surface of the movable contact support 81 on the movable iron core 40 side, and is sandwiched between the elastic ring holding portion 104 and the movable iron core 40 when the electromagnetic contactor is used. As described above, the elastic ring holding portion 104 is disposed adjacently.
As shown in FIG. 11, the retaining projection 105 is formed to extend in a direction parallel to the groove portion of the elastic ring holding portion 104, and near the opening end of the groove portion according to the distance from the opening end to the closed end side. As a result, a slope portion 105a whose protrusion height continuously increases is formed. The slope 105 a ends near the center of the groove of the elastic ring holder 104. On the other hand, the end on the closed end side of the groove portion of the retaining protrusion 105 extends substantially along the operation direction of the electromagnetic contactor, and is formed with an engagement surface portion 105b that engages with the pin 103 and prevents its falling off. Yes.
As shown in FIG. 13, the retaining protrusion 105 also functions as a partition plate that partitions the movable core 40 and the elastic ring 102 so that they do not come into contact with each other when the electromagnetic contactor is used.

次に、本実施形態の電磁接触器において、可動接点支え８１に固定鉄心４０を装着する際の動作について説明する。
先ず、固定鉄心４０の貫通孔４４に連結板１０１を挿入するとともに、背面部の凹部４０ａにピン１０３を嵌め込む。次に、連結板１０１及びピン１０３の両端部に弾性リング１０２を装着する。このとき、連結板１０１の突端部を開口１０２ａに挿入し、ピン１０３の突端部を開口１０２ｂに挿入する。 Next, the operation | movement at the time of mounting | wearing the fixed iron core 40 to the movable contact support 81 in the electromagnetic contactor of this embodiment is demonstrated.
First, the connecting plate 101 is inserted into the through-hole 44 of the fixed iron core 40, and the pin 103 is fitted into the recess 40a on the back surface. Next, the elastic ring 102 is attached to both ends of the connecting plate 101 and the pin 103. At this time, the protruding end portion of the connecting plate 101 is inserted into the opening 102a, and the protruding end portion of the pin 103 is inserted into the opening 102b.

そして、弾性リング１０２を、可動接点支え８１の弾性リング保持部１０４に、溝部の開口側から押し込む。このとき、ピン１０３は、抜け止め用突起１０５の斜面部１０５ａと当接して押圧され、弾性リング１０２を変形させながら図１１における下側（電磁接触器に組み込まれた状態における固定鉄心３０側）に退避する。そして、弾性リング１０２を溝部に対して所定の挿入深さまで挿入すると、ピン１０３は抜け止め用突起１０５を乗り越える。このとき、弾性リング１０２の変形が復元することによって、ピン１０３は図１１における上方側に変位する。そして、ピン１０３が抜け止め用突起１０５の係合面部１０５ｂと係合することによって、可動鉄心４０の可動接点支え８１からの脱落が防止される。
なお、図１３に示すように、この可動鉄心弾性支持機構１００によって、可動鉄心４０は、その背面部（図１３における上面部）が可動接点支え８１の対向する面部との間に空隙Ｓを有する状態で支持されている。 Then, the elastic ring 102 is pushed into the elastic ring holding portion 104 of the movable contact support 81 from the opening side of the groove portion. At this time, the pin 103 is pressed in contact with the inclined surface portion 105a of the retaining projection 105, and deforms the elastic ring 102, and the lower side in FIG. 11 (the fixed core 30 side in the state incorporated in the electromagnetic contactor). Evacuate to. When the elastic ring 102 is inserted to a predetermined insertion depth with respect to the groove portion, the pin 103 gets over the retaining projection 105. At this time, the deformation of the elastic ring 102 is restored, so that the pin 103 is displaced upward in FIG. The pin 103 is engaged with the engagement surface portion 105b of the retaining projection 105, so that the movable iron core 40 is prevented from falling off the movable contact support 81.
As shown in FIG. 13, the movable core elastic support mechanism 100 causes the movable core 40 to have a gap S between the back surface portion (upper surface portion in FIG. 13) and the facing surface portion of the movable contact support 81. Supported by the state.

以下、本実施形態の効果を、上述した参考例と対比して説明する。
参考例の電磁接触器においては、可動鉄心４０及び連結板４５が可動接点支え８１に対して剛体的に直接接触していることから、固定鉄心３０と可動鉄心４０との衝突時に生じる衝撃や、可動鉄心４０の固定鉄心３０からの釈放時に生じる衝撃が、可動接点支え８１に伝達されやすい。このため、可動接点支え８１の破損を防止するため強度を大きくする必要があり、コストや重量が増大してしまう。また、可動接点支え８１に伝搬した衝撃は可動接触子８０にも伝達されるため、可動接触子８０と固定接触子７０との接点部分の消耗が大きくなる。このため、各接触子のボリュームを大きくする必要がある。 Hereinafter, the effect of the present embodiment will be described in comparison with the above-described reference example.
In the electromagnetic contactor of the reference example, since the movable iron core 40 and the connecting plate 45 are in direct rigid contact with the movable contact support 81, an impact generated when the fixed iron core 30 and the movable iron core 40 collide, The impact generated when the movable iron core 40 is released from the fixed iron core 30 is easily transmitted to the movable contact support 81. For this reason, it is necessary to increase the strength in order to prevent the movable contact support 81 from being damaged, resulting in an increase in cost and weight. Further, since the impact propagated to the movable contact support 81 is also transmitted to the movable contact 80, the wear of the contact portion between the movable contact 80 and the fixed contact 70 increases. For this reason, it is necessary to increase the volume of each contact.

これに対し、本実施形態の場合には、可動鉄心４０は連結板１０１の両端部に設けられた弾性リング１０２を介して可動接点支え８１に支持されることから、可動鉄心４０に生じた衝撃は弾性リング１０２の緩衝効果によって緩和され、可動接点支え８１側への伝達が抑制される。これによって、可動接点支え８１の衝撃による破損を防止することができる。また、可動接触子８０への衝撃の伝達も低減されることから、可動接触子８０と固定接触子７０の接点部分の摺動による消耗を抑制することができ、電磁接触器を長寿命化することができる。
また、可動鉄心４０から下部フレーム１０、上部フレーム２０等への衝撃の伝搬を低減して、電磁接触器の作動時における騒音や振動を低減できる。 On the other hand, in the case of the present embodiment, the movable iron core 40 is supported by the movable contact support 81 via the elastic rings 102 provided at both ends of the connecting plate 101, so that the impact generated on the movable iron core 40. Is relaxed by the buffering effect of the elastic ring 102, and the transmission to the movable contact support 81 side is suppressed. As a result, the movable contact support 81 can be prevented from being damaged by an impact. Further, since the transmission of impact to the movable contact 80 is also reduced, it is possible to suppress wear due to the sliding of the contact portion between the movable contact 80 and the fixed contact 70, thereby extending the life of the electromagnetic contactor. be able to.
Further, it is possible to reduce the propagation of impact from the movable iron core 40 to the lower frame 10, the upper frame 20, and the like, thereby reducing noise and vibration during operation of the electromagnetic contactor.

さらに、弾性リング１０２が可動鉄心４０に対して間隔を隔てて対向して配置される構成としたことによって、可動鉄心４０から弾性リング１０２への衝撃の伝達を低減でき、上述した緩衝効果を向上することができる。また、弾性リング１０２に可動鉄心４０の熱が伝達しにくくなることから、弾性リング１０２の熱劣化を防止できる。   Further, by adopting a configuration in which the elastic ring 102 is disposed to face the movable iron core 40 with a space therebetween, the transmission of impact from the movable iron core 40 to the elastic ring 102 can be reduced, and the above-described buffering effect is improved. can do. In addition, since heat of the movable iron core 40 is difficult to be transmitted to the elastic ring 102, thermal deterioration of the elastic ring 102 can be prevented.

また、可動鉄心４０と弾性リング１０２との間にわたして設けられたピン１０３と、可動接点支え８１に設けられ、可動鉄心４０の装着時に弾性リング１０２をたわませることによってピン１０３を退避させる斜面部１０５ａ、及び、可動鉄心４０の装着後にピン１０３と係合し可動鉄心４０の脱落を防止する係合面部１０５ｂとを有する抜け止め用突起１０５とを設けることによって、簡単な構成によって可動鉄心４０の可動接点支え８１からの脱落を防止することができる。   Further, the pin 103 provided between the movable iron core 40 and the elastic ring 102 and the movable contact support 81 are provided to retract the pin 103 by bending the elastic ring 102 when the movable iron core 40 is mounted. By providing the slope 105a and the retaining projection 105 having the engaging surface portion 105b that engages with the pin 103 and prevents the movable core 40 from falling off after the movable core 40 is mounted, the movable core can be formed with a simple configuration. Dropping off the 40 movable contact supports 81 can be prevented.

（他の実施の形態）
なお、本発明は上記した実施形態のみに限定されるものではなく、種々の応用や変形が考えられる。例えば、電磁接触器の構造や各構成部品の形状、材質等は、上述した実施形態のものに限定されず、適宜変更することができる。
また、本発明の弾性支持機構は、単独での使用も可能であるが、他の弾性支持機構や緩衝機構と組み合わせて用いてもよい。例えば、本発明の弾性支持機構を設けるとともに、可動鉄心と可動接点支えとの間に他の緩衝材を設けてもよい。 (Other embodiments)
In addition, this invention is not limited only to above-described embodiment, Various application and deformation | transformation can be considered. For example, the structure of the magnetic contactor and the shape and material of each component are not limited to those of the above-described embodiment, and can be changed as appropriate.
Further, the elastic support mechanism of the present invention can be used alone, but may be used in combination with other elastic support mechanisms and buffer mechanisms. For example, while providing the elastic support mechanism of the present invention, another cushioning material may be provided between the movable iron core and the movable contact support.

本発明の参考例である電磁接触器の外観斜視図である。It is an external appearance perspective view of the electromagnetic contactor which is a reference example of this invention. 図１のII−II部矢視断面図である。It is the II-II part arrow sectional drawing of FIG. 図１及び図２のIII−III部矢視断面図である。FIG. 3 is a cross-sectional view taken along the line III-III in FIGS. 1 and 2. 図１の電磁接触器の分解斜視図である。It is a disassembled perspective view of the electromagnetic contactor of FIG. 参考例の可動鉄心を可動接点支えから取り外した状態を示す分解斜視図である。It is a disassembled perspective view which shows the state which removed the movable iron core of the reference example from the movable contact support. 参考例の可動鉄心と可動接点支えとを接続した状態を示す外観斜視図である。It is an external appearance perspective view which shows the state which connected the movable iron core and movable contact support of a reference example. 参考例の可動鉄心と可動接点支えとを接続した状態を示す正面図である。It is a front view which shows the state which connected the movable iron core and movable contact support of a reference example. 本発明を適用した電磁接触器の実施形態における断面図である。It is sectional drawing in embodiment of the electromagnetic contactor to which this invention is applied. 図８の電磁接触器の可動鉄心から連結板、弾性リング、ピンを取り外した状態を示す分解斜視図である。It is a disassembled perspective view which shows the state which removed the connecting plate, the elastic ring, and the pin from the movable iron core of the electromagnetic contactor of FIG. 図８の電磁接触器の弾性リングの外観斜視図である。It is an external appearance perspective view of the elastic ring of the electromagnetic contactor of FIG. 図８の電磁接触器の可動鉄心を可動接点支えから取り外した状態を示す分解斜視図である。It is a disassembled perspective view which shows the state which removed the movable iron core of the electromagnetic contactor of FIG. 8 from the movable contact support. 図８の電磁接触器の可動鉄心と可動接点支えとを接続した状態を示す外観斜視図である。It is an external appearance perspective view which shows the state which connected the movable iron core and movable contact support of the electromagnetic contactor of FIG. 図８の電磁接触器の可動鉄心と可動接点支えとを接続した状態を示す正面図である。It is a front view which shows the state which connected the movable iron core and movable contact support of the electromagnetic contactor of FIG.

符号の説明Explanation of symbols

１０ 下部フレーム
２０ 上部フレーム
３０ 固定鉄心
４０ 可動鉄心
４１ 中央脚
４２ 外側脚
４３ 連結部
４４ 貫通孔
４５ 連結板
５０ 電磁コイル
５１ 巻線
５２ ボビン
６０ 復帰バネ
７０ 固定接触子
８０ 可動接触子
８１ 可動接点支え
８１ａ 保持部
９０ 固定鉄心弾性保持機構
１００ 可動鉄心弾性保持機構
１０１ 連結板
１０２ 弾性リング
１０３ ピン
１０４ 弾性リング保持部
１０５ 抜け止め用突起
１０５ａ 斜面部
１０５ｂ 係合面部 DESCRIPTION OF SYMBOLS 10 Lower frame 20 Upper frame 30 Fixed iron core 40 Movable iron core 41 Center leg 42 Outer leg 43 Connecting part 44 Through-hole 45 Connecting plate 50 Electromagnetic coil 51 Winding 52 Bobbin 60 Return spring 70 Fixed contact 80 Moving contact 81 Moving contact support 81a holding part 90 fixed core elastic holding mechanism 100 movable core elastic holding mechanism 101 connecting plate 102 elastic ring 103 pin 104 elastic ring holding part 105 retaining protrusion 105a slope part 105b engaging surface part

Claims (3)

中央脚及びこの中央脚を挟んで配置された外側脚を有する略Ｅ字型の固定鉄心と、
前記固定鉄心に当接及び離間するように配置され、該固定鉄心の前記中央脚及び前記外側脚とそれぞれ対向配置された中央脚及び外側脚を有する略Ｅ字型の可動鉄心と、
前記固定鉄心の中央脚及び前記可動鉄心の中央脚の周囲を周回する巻線を有し、前記可動鉄心を駆動する電磁コイルと、
前記各部材を収容するフレームと、
前記フレームに固定された固定接点と、
前記固定接点に当接又は離間するように配置された可動接点と、
前記フレームに対して相対移動可能に設けられ前記可動鉄心及び前記可動接点が装着されるとともに該可動鉄心の動きを前記可動接点に伝達する可動接点支え部材とを備え、
前記可動鉄心と前記可動接点支え部材が連結部材により一体に連結されている電磁接触器であって、
前記可動鉄心を前記可動接点支え部材に弾性体を介して支持する弾性支持機構を備えるとともに、
前記弾性支持機構は、前記可動鉄心の中央脚に厚さ方向に形成された貫通孔に挿入されその両端部が該貫通孔から突き出した状態で配置される支持部材と、前記支持部材の両端に装着されるとともに前記可動接点支え部材に設けられた弾性体保持部に保持される弾性体とで構成されることを特徴とする電磁接触器。 A substantially E-shaped fixed iron core having a central leg and an outer leg disposed across the central leg;
A substantially E-shaped movable iron core, which is disposed so as to abut against and separate from the fixed iron core, and has a central leg and an outer leg respectively disposed opposite to the central leg and the outer leg of the fixed iron core;
An electromagnetic coil for driving the movable iron core, having windings that circulate around the central leg of the fixed iron core and the central leg of the movable iron core;
A frame for accommodating each member;
A fixed contact fixed to the frame;
A movable contact disposed so as to abut or separate from the fixed contact;
A movable contact support member provided so as to be relatively movable with respect to the frame, the movable iron core and the movable contact being mounted, and a movement of the movable iron core being transmitted to the movable contact;
An electromagnetic contactor in which the movable iron core and the movable contact support member are integrally connected by a connecting member,
An elastic support mechanism for supporting the movable iron core to the movable contact support member via an elastic body;
The elastic support mechanism is inserted into a through-hole formed in the thickness direction in the center leg of the movable iron core and is disposed in a state in which both end portions protrude from the through-hole, and at both ends of the support member An electromagnetic contactor comprising: an elastic body which is mounted and is held by an elastic body holding portion provided on the movable contact support member. 前記弾性体は、前記可動鉄心に対して間隔を隔てて対向して配置されることを特徴とする請求項１に記載の電磁接触器。   The electromagnetic contactor according to claim 1, wherein the elastic body is disposed to face the movable iron core with a space therebetween. 前記可動鉄心と前記弾性体との間にわたして設けられた脱落防止部材と、
前記可動接点支え部材に設けられ、該可動接点支え部材への前記可動鉄心の装着時に前記弾性体をたわませることによって前記脱落防止部材を退避させる斜面部、及び、前記可動鉄心の装着後に前記脱落防止部材と係合し該可動鉄心の脱落を防止する係合面部を有する突起部と、
を含む脱落防止機構を有することを特徴とする請求項１又は２に記載の電磁接触器。 A drop-off prevention member provided between the movable iron core and the elastic body;
A slope part provided on the movable contact support member, and retracting the drop-off prevention member by deflecting the elastic body when the movable core is mounted on the movable contact support member; and after the movable core is mounted, A protrusion having an engagement surface portion that engages with a drop-off prevention member and prevents the movable iron core from dropping off;
The electromagnetic contactor according to claim 1, further comprising a drop prevention mechanism including
JP2007169953A 2007-06-28 2007-06-28 Electromagnetic contactor Pending JP2009009813A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015079741A (en) * 2013-10-18 2015-04-23 エルエス産電株式会社Lsis Co., Ltd. Magnetic contactor
KR20170004950A (en) 2014-05-20 2017-01-11 후지 덴키 기기세이교 가부시끼가이샤 Electromagnetic contactor
KR20170005789A (en) 2014-05-20 2017-01-16 후지 덴키 기기세이교 가부시끼가이샤 Electromagnetic contactor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015079741A (en) * 2013-10-18 2015-04-23 エルエス産電株式会社Lsis Co., Ltd. Magnetic contactor
US9275814B2 (en) 2013-10-18 2016-03-01 Lsis Co., Ltd. Magnetic contactor
KR20170004950A (en) 2014-05-20 2017-01-11 후지 덴키 기기세이교 가부시끼가이샤 Electromagnetic contactor
KR20170005789A (en) 2014-05-20 2017-01-16 후지 덴키 기기세이교 가부시끼가이샤 Electromagnetic contactor
US9887054B2 (en) 2014-05-20 2018-02-06 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contactor having snap-fit section coupling frames
US10269518B2 (en) 2014-05-20 2019-04-23 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contactor

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