JP4364723B2 - Magnetic contactor - Google Patents

Magnetic contactor Download PDF

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JP4364723B2
JP4364723B2 JP2004171067A JP2004171067A JP4364723B2 JP 4364723 B2 JP4364723 B2 JP 4364723B2 JP 2004171067 A JP2004171067 A JP 2004171067A JP 2004171067 A JP2004171067 A JP 2004171067A JP 4364723 B2 JP4364723 B2 JP 4364723B2
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movable
core
fixed
insulating base
contact
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JP2005353359A (en
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靖弘 佐久間
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Hitachi Industrial Equipment Systems Co Ltd
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Description

本発明は、電磁接触器であり、特に可動コアが開極状態にあるとき、可動コアと固定コアとの開極距離を任意に可変できる構造により、可動絶縁台に付随して動く可動接点の接点ジャンプを低減させ、接点消耗を抑制する電磁接触器に関する。   The present invention is an electromagnetic contactor, and in particular, when the movable core is in an open state, the movable contact that moves along with the movable insulating base by a structure that can arbitrarily change the opening distance between the movable core and the fixed core. The present invention relates to an electromagnetic contactor that reduces contact jump and suppresses contact consumption.

電気回路の開閉操作を電磁石で行う装置として、電磁接触器が知られており、電動機回路等の電気設備において、遠隔操作を行う際等に使用されている。そして、始動電流の大きな負荷を始動させる電気設備において、この負荷に電力を供給する電源の容量に余裕がない場合、負荷の始動状態における始動電流によって回路の電圧が低下する現象がある。この電気設備において、電磁接触器のコイルの電源を負荷と同じ電源から取ると、負荷の始動電流による電圧降下によって、可動コアの吸引力不足が生じる。図６はこの現象を図示したもので、曲線Ｐは定格電圧を印加した場合のコイルの吸引力と可動コア−固定コア間の間隔の関係を表す吸引力曲線である。この曲線Ｐは、始動電流のため回路の電圧降下が生じた状態では吸引力が低下し曲線Ｑに移動する。なお、特性Ｒは電磁接触器の復帰ばね及び接点ばねによる負荷力を表す。図７は操作電圧、主接点の開閉及び負荷電流をタイミングチャートで示したもので、主接点が閉路し始動電流が流れることでコイルの操作電圧が低下することを示す。この状態で電磁接触器の可動コアが固定コアに衝突してばたつきを起こすと、吸引力不足のため可動コアと固定コアの離極距離が大きくなり、可動コアに付随して動く可動接点が接点ジャンプを起こす。   An electromagnetic contactor is known as a device for performing an opening / closing operation of an electric circuit with an electromagnet, and is used when performing a remote operation in an electric facility such as an electric motor circuit. In an electric facility that starts a load having a large starting current, when there is no room for the capacity of a power source that supplies power to the load, there is a phenomenon in which the circuit voltage decreases due to the starting current in the starting state of the load. In this electrical equipment, when the power of the coil of the magnetic contactor is taken from the same power source as the load, the attractive force of the movable core is insufficient due to the voltage drop due to the starting current of the load. FIG. 6 illustrates this phenomenon, and a curve P is an attraction force curve representing the relationship between the attraction force of the coil and the distance between the movable core and the fixed core when the rated voltage is applied. This curve P moves to the curve Q when the voltage drop of the circuit occurs due to the starting current and the attractive force decreases. The characteristic R represents the load force due to the return spring and the contact spring of the electromagnetic contactor. FIG. 7 is a timing chart showing the operation voltage, the opening / closing of the main contact, and the load current, and shows that the operation voltage of the coil is lowered when the main contact is closed and the starting current flows. In this state, when the movable core of the magnetic contactor collides with the fixed core and flutters, the depolarization distance between the movable core and the fixed core increases due to insufficient suction, and the movable contact that moves along with the movable core is the contact point. Make a jump.

この接点ジャンプによって大きな始動電流を開閉するため、接点が消耗して電気的耐久性が低下する問題があり、可動コアと固定コアに対し、いろいろな緩衝構造を採用することが提案されている。例えば特許文献１に記載のように、緩衝部材としてゴム等の弾性材を用いるものがある。しかし、従来技術では、可動コアと固定コアの間隔を調整することが難しかった。
特開昭５９−１２３２０５号公報 Since a large starting current is opened and closed by this contact jump, there is a problem that the contact is consumed and the electrical durability is lowered, and it has been proposed to employ various buffer structures for the movable core and the fixed core. For example, as described in Patent Document 1, there is one using an elastic material such as rubber as a buffer member. However, in the prior art, it is difficult to adjust the distance between the movable core and the fixed core.
JP 59-123205 A

本発明は、従来技術の問題を解決するものであり、可動コアと固定コアの衝突エネルギーを可動コアの位置を固定コア方向に近づけることで減少させ、可動コアの離極および接点ジャンプを低減した電磁接触器を提供することを目的とする。   The present invention solves the problems of the prior art, and reduces the collision energy between the movable core and the fixed core by moving the position of the movable core closer to the fixed core, thereby reducing the depolarization of the movable core and the contact jump. An object is to provide an electromagnetic contactor.

本発明は、コイルを巻回した固定コアと、開極方向と同方向に移動可能に設けた可動コアと、該可動コアを結合し可動接点を支持する可動絶縁台と、前記可動コアを固定コアから開極するように配設した復帰ばねと、前記各部品を収納し固定接点を支持する固定絶縁台とを備える電磁接触器において、前記可動絶縁台と前記固定絶縁台の間に、該固定絶縁台に設けた切欠穴より間隔調整用部品を装着し、前記可動絶縁台を前記固定コア方向へ移動させ、前記可動絶縁台に結合された前記可動コアと前記固定コアとの開極距離を可変とする電磁接触器である。 The present invention includes a fixed core around which a coil is wound, a movable core provided so as to be movable in the same direction as the opening direction, a movable insulating base that couples the movable core and supports a movable contact, and fixes the movable core. a return spring which is arranged so as to opening from the core, an electromagnetic contactor and a fixed insulating base which supports the fixed contact and housing the respective parts, between the fixed insulating base and the movable insulation stand, the the gap adjusting parts than cutout hole provided in the fixed insulating base mounted, the movable insulation stand is moved to the fixed core direction, opening the distance between the movable core and the fixed core coupled to the movable insulation stand Is an electromagnetic contactor that can be made variable.

また、本発明は、前記可動絶縁台と前記固定絶縁台の間隔を調整する前記間隔調整用部品を前記可動絶縁台と前記固定絶縁台の間に装着可能な構造であるとともに、前記間隔調整用部品は厚さの異なる数種類からなり、前記可動絶縁台を前記固定コア方向へ移動させ、前記可動絶縁台に結合された前記可動コアと前記固定コアとの開極距離を段階的に可変とする電磁接触器である。 The present invention, together with a structure that can be mounted between the component interval adjustment for adjusting the pre-Symbol interval of the fixed insulating base and the movable insulation stand of the fixed insulating base and the movable insulation stand, the distance adjustment use parts made from different several thicknesses, the cause of the movable insulation stand is moved to the fixed core direction, the stepwise variable opening distance between the fixed core and the movable core coupled to the movable insulation stand It is an electromagnetic contactor.

そして、本発明は、コイルを巻回した固定コアと、開極方向と同方向に移動可能に設けた可動コアと、該可動コアを結合し可動接点を支持する可動絶縁台と、前記可動コアを固定コアから開極するように配設した復帰ばねと、前記各部品を収納し固定接点を支持する固定絶縁台とを備える電磁接触器において、前記可動絶縁台の上面で接触する部分に取り外し可能な突起を前記固定絶縁台に設け、該突起が有りの場合は、前記可動絶縁台を前記固定コア方向に押圧して前記可動絶縁台に結合された前記可動コアを前記固定コア方向に移動させ、前記突起が切断された場合、前記可動絶縁台が前記復帰ばねに押し戻され、前記可動絶縁台に結合された前記可動コアと前記固定コアとの開極距離を変更する電磁接触器である。 The present invention provides a fixed core around which a coil is wound, a movable core provided so as to be movable in the same direction as the opening direction, a movable insulating base that couples the movable core and supports a movable contact, and the movable core a return spring which is arranged so as to opening from the fixed core, an electromagnetic contactor and a fixed insulating base which supports the fixed contact and accommodating the respective components, remove the portion in contact with the movable insulation stand top the possible projection provided on the fixed insulating boards, in the case of the projection there, moving the movable core coupled to the movable insulation stand to the movable insulation stand is pressed to the fixed core facing the fixed core direction is, when the projections are cut, said movable insulation stand is pushed back to the return spring, is an electromagnetic contactor for changing the opening distance between the movable core coupled to the movable insulation stand the stationary core .

更に、本発明は、コイルを巻回した固定コアと、開極方向と同方向に移動可能に設けた可動コアと、該可動コアを結合し可動接点を支持する可動絶縁台と、前記可動コアを固定コアから開極するように配設した復帰ばねと、前記各部品を収納し固定接点を支持する固定絶縁台とを備える電磁接触器において、前記固定絶縁台の上部に交換可能部品として設けたカバーは、前記可動絶縁台と接触する突起を有し、該カバーの突起により、前記可動絶縁台を前記固定コア方向へ移動させ、前記可動絶縁台に結合された前記可動コアと前記固定コアとの開極距離を変更する電磁接触器である。 Furthermore, the present invention provides a fixed core around which a coil is wound, a movable core provided so as to be movable in the same direction as the opening direction, a movable insulating base that couples the movable core and supports a movable contact, and the movable core a return spring which is arranged so as to opening from the fixed core, an electromagnetic contactor and a fixed insulating base which supports the fixed contact and accommodating the respective components, provided as replaceable parts on top of the fixed insulating base cover may have a projection in contact with the movable insulation stand, by the projections of the cover, the movable insulation stand is moved to the fixed core direction, the fixed core and the movable core coupled to the movable insulation stand It is an electromagnetic contactor which changes the opening distance.

また、本発明は、コイルを巻回した固定コアと、開極方向と同方向に移動可能に設けた可動コアと、該可動コアを結合し可動接点を支持する可動絶縁台と、前記可動コアを固定コアから開極するように配設した復帰ばねと、前記各部品を収納し固定接点を支持する固定絶縁台を備える電磁接触器において、追加取付可能な部品は可動絶縁台と接触する突起を有しており、前記追加部品を装着すると、突起が可動絶縁台を押圧して可動絶縁台を固定コア方向へ移動させ、可動絶縁台に結合された可動コアと固定コアとの開極距離を変更する電磁接触器である。   The present invention also provides a fixed core around which a coil is wound, a movable core provided so as to be movable in the same direction as the opening direction, a movable insulating base that couples the movable core and supports a movable contact, and the movable core. In a magnetic contactor comprising a return spring arranged so as to open a pole from a fixed core and a fixed insulating base that accommodates the parts and supports a fixed contact, the additionally mountable parts are protrusions that contact the movable insulating base When the additional part is mounted, the protrusion presses the movable insulating base to move the movable insulating base toward the fixed core, and the opening distance between the movable core coupled to the movable insulating base and the fixed core It is an electromagnetic contactor to change.

本発明によれば、可動コアと固定コアの衝突エネルギーを可動コアの位置を固定コア方向に近づけることで減少させ、可動コアの離極および接点ジャンプを低減した電磁接触器を得ることができる。   According to the present invention, it is possible to obtain an electromagnetic contactor in which the collision energy between the movable core and the fixed core is reduced by bringing the position of the movable core closer to the fixed core direction, and the depolarization of the movable core and the contact jump are reduced.

本発明を実施するための最良の形態を説明する。
本発明の電磁接触器の実施例について、図面を用いて説明する。図２は、実施例１の電磁接触器の側断面図である。図３は、実施例２の電磁接触器の側断面図である。図４は、実施例３の電磁接触器の側断面図である。図５は、実施例４の電磁接触器の側断面図である。 The best mode for carrying out the present invention will be described.
Embodiments of the electromagnetic contactor of the present invention will be described with reference to the drawings. FIG. 2 is a side sectional view of the electromagnetic contactor according to the first embodiment. FIG. 3 is a side sectional view of the electromagnetic contactor according to the second embodiment. FIG. 4 is a side sectional view of the electromagnetic contactor according to the third embodiment. FIG. 5 is a side sectional view of the electromagnetic contactor according to the fourth embodiment.

図１は従来の電磁接触器の側断面図である。電磁接触器は、固定絶縁台１１、固定コア１２、可動絶縁台２１、可動コア２２、コイル３１、復帰ばね３２等を備えている。固定コア１２と可動コア２２は、コイル３１を間に置き、互いに対向して配置されている。可動コア２２は、可動絶縁台２１に連結部材２３で結合され、可動接点２４に可動コア２２の動きを伝達している。可動接点２４は、可動絶縁台２１に接点ばね２５の押圧により支持された状態で固定接点１４に対向して配置されている。これらは固定絶縁台１１内に納められている。電磁接触器が開極状態（ＯＦＦ状態）では、可動コア２２は、復帰ばね３２により固定コア１２から退ける方向に押圧され、そして、固定コア１２と所定の第１間隔Ｇａを隔てた開極状態にある。この状態は可動絶縁台２１を経由して可動接点２４に伝達され、可動接点２４と固定接点１４においても所定の第２間隔Ｇｂを隔てた開離状態にある。電磁接触器のコイル３１に操作電圧を印加すると、コイル３１が作る磁束による吸引力により可動コア２２が固定コア１２側に吸引され移動を開始する。この移動距離が第２間隔Ｇｂとなる時、可動接点２４と固定接点１４は接触し、電磁接触器はＯＮ状態となる。更に可動コア２２が移動し、移動距離が第１間隔Ｇａとなった時、可動コア２２は固定コア１２に衝突して接極することで動作が終了する。この過程で可動コア２２が固定コア１２に衝突した瞬間、可動コア２２の衝突エネルギーにより固定コア１２との間に反発力が働き、可動コア２２を固定コア１２より退ける力となって可動コア２２と固定コア１２は離極する。この離極は可動絶縁台２１によって可動接点２４に伝達され、可動接点２４と固定接点１４の開離につながる場合があるが、可動接点２４と固定接点１４の間には接点ストロークＧｃ（＝Ｇａ−Ｇｂ）が有り、この接点ストロークＧｃを超えない離極であれば、可動接点２４と固定接点１４は開離しない。   FIG. 1 is a side sectional view of a conventional electromagnetic contactor. The electromagnetic contactor includes a fixed insulating base 11, a fixed core 12, a movable insulating base 21, a movable core 22, a coil 31, a return spring 32, and the like. The fixed core 12 and the movable core 22 are arranged to face each other with the coil 31 interposed therebetween. The movable core 22 is coupled to the movable insulating base 21 by a connecting member 23 and transmits the movement of the movable core 22 to the movable contact 24. The movable contact 24 is disposed to face the fixed contact 14 while being supported on the movable insulating base 21 by pressing the contact spring 25. These are stored in the fixed insulating base 11. When the magnetic contactor is in the open state (OFF state), the movable core 22 is pressed in a direction away from the fixed core 12 by the return spring 32, and the open state is separated from the fixed core 12 by a predetermined first gap Ga. It is in. This state is transmitted to the movable contact 24 via the movable insulating stand 21, and the movable contact 24 and the fixed contact 14 are also in a separated state with a predetermined second gap Gb. When an operating voltage is applied to the coil 31 of the magnetic contactor, the movable core 22 is attracted to the fixed core 12 side by the attractive force generated by the magnetic flux generated by the coil 31 and starts moving. When this moving distance becomes the second distance Gb, the movable contact 24 and the fixed contact 14 come into contact with each other, and the electromagnetic contactor is turned on. Further, when the movable core 22 moves and the moving distance reaches the first interval Ga, the movable core 22 collides with the fixed core 12 and contacts with the fixed core 12 to complete the operation. In this process, at the moment when the movable core 22 collides with the fixed core 12, a repulsive force acts between the movable core 22 and the fixed core 12 due to the collision energy of the movable core 22. The fixed core 12 is depolarized. This depolarization is transmitted to the movable contact 24 by the movable insulating base 21 and may lead to the separation of the movable contact 24 and the fixed contact 14, but the contact stroke Gc (= Ga between the movable contact 24 and the fixed contact 14 may occur. -Gb), and if the depolarization does not exceed the contact stroke Gc, the movable contact 24 and the fixed contact 14 are not separated.

本発明においては、このコア離極を低減するため、可動コアと固定コアの開極距離を可変構造とする。図８の曲線Ａはコイルの吸引力と可動コア−固定コア間の開極距離を表す吸引力特性である。同図の曲線Ｂは復帰ばねおよび接点ばねによる負荷力特性を表す。同図でコイルに電圧を印加すると、コイルが作る磁束による吸引力により可動コアが固定コアに吸引され、開極距離０（接極状態）となる。コイルへの電圧印加を行わない時は、可動コアは復帰ばねの負荷力により押し戻され、開極距離Ｌ１を隔てた位置に押し圧される。コイルの吸引力に対し、ばねの負荷力は相反する力となっているため、コイルに電圧を印加すると吸引力Ａと負荷力Ｂの差、図では領域Ｓの力量により可動コアは固定コア方向へ吸引される。可動コアの開極位置を固定コア方位に移動し、可動コアの移動量をＬ２とすれば、移動量がＬ１の時に比べてａ−ｂ−ｃ−ｄで囲まれた領域の力量による加速が生じないため、可動コアが固定コアに衝突する直前の移動速度が低減される。可動コアが固定コアに衝突するエネルギーは速度に比例し、固定コアからの反発力も速度に比例するので、可動コアの離極も速度に比例して低減される。可動コアの離極が低減することで、接点ジャンプを低減できる。   In the present invention, in order to reduce the core depolarization, the opening distance between the movable core and the fixed core is made variable. Curve A in FIG. 8 is an attractive force characteristic representing the attractive force of the coil and the opening distance between the movable core and the fixed core. Curve B in the figure represents the load force characteristics due to the return spring and the contact spring. When a voltage is applied to the coil in the figure, the movable core is attracted to the fixed core by the attractive force generated by the magnetic flux generated by the coil, and the opening distance becomes 0 (contact state). When no voltage is applied to the coil, the movable core is pushed back by the load force of the return spring, and is pressed to a position separated by the opening distance L1. Since the load force of the spring is opposite to the coil's attractive force, when the voltage is applied to the coil, the movable core moves in the direction of the fixed core due to the difference between the attractive force A and the load force B. Sucked into. If the opening position of the movable core is moved to the fixed core direction and the movement amount of the movable core is L2, the acceleration by the force in the region surrounded by abcd compared to when the movement amount is L1. Since it does not occur, the moving speed immediately before the movable core collides with the fixed core is reduced. Since the energy with which the movable core collides with the fixed core is proportional to the speed, and the repulsive force from the fixed core is also proportional to the speed, the depolarization of the movable core is also reduced in proportion to the speed. Contact jump can be reduced by reducing the depolarization of the movable core.

実施例１を説明する。図２（ａ）は本発明の第１実施例の電磁接触器の側断面図である。図２（ｂ）に示すように、開極距離調整用部品４１を固定絶縁台１１の側面に設けた切り欠き穴より装着可能な構造としたものである。開極距離調整用部品４１は、固定絶縁台１１の外側より装着若しくは離脱できる構造としてある。   Example 1 will be described. FIG. 2A is a side sectional view of the electromagnetic contactor according to the first embodiment of the present invention. As shown in FIG. 2 (b), the opening distance adjusting component 41 can be mounted through a notch hole provided on the side surface of the fixed insulating base 11. The opening distance adjusting component 41 has a structure that can be attached or detached from the outside of the fixed insulating base 11.

本図は、可動絶縁台２１と固定絶縁台１１の間に開極距離調整用部品４１を装着した図である。可動絶縁台２１と固定絶縁台１１の間に開極距離調整用部品４１を装着することで、可動コア２２が開極状態にあるとき、可動絶縁台２１が固定コア１２の方向に押し出され、可動絶縁台２１に結合された可動コア２２が固定コア１２の方向に移動する。この移動により、可動コア２２と固定コア１２の開極距離を可変とすることができる。   This figure is a view in which an opening distance adjusting component 41 is mounted between the movable insulating base 21 and the fixed insulating base 11. By mounting the opening distance adjusting component 41 between the movable insulating base 21 and the fixed insulating base 11, when the movable core 22 is in the open state, the movable insulating base 21 is pushed out in the direction of the fixed core 12, The movable core 22 coupled to the movable insulating base 21 moves in the direction of the fixed core 12. By this movement, the opening distance between the movable core 22 and the fixed core 12 can be made variable.

実施例２を説明する。図３は本発明の第２実施例の電磁接触器の側断面図である。本図は、固定絶縁台１１に可動絶縁台２１と接触する突起５１を配置した図である。可動絶縁台２１と抵触する突起５１により、可動絶縁台２１は固定コア１２の方向に押し出され、可動絶縁台２１に結合された可動コア２２が固定コア１２の方向へ移動した状態となる。   A second embodiment will be described. FIG. 3 is a sectional side view of the electromagnetic contactor according to the second embodiment of the present invention. This figure is a diagram in which a protrusion 51 that contacts the movable insulating base 21 is arranged on the fixed insulating base 11. The movable insulating base 21 is pushed out in the direction of the fixed core 12 by the protrusion 51 that makes contact with the movable insulating base 21, and the movable core 22 coupled to the movable insulating base 21 is moved in the direction of the fixed core 12.

この可動絶縁台２１と接触する突起５１は、固定絶縁台１１の外側より容易に切断除去できる構造としてある。電源容量に裕度がある場合は、可動絶縁台２１と接触する突起５１を切断除去することによって、可動絶縁台２１が固定コア１２から開離する方向に移動する。この移動により、可動絶縁台２１に付随して動く可動接点２４と可動接点に対向する固定接点１４の遮断距離が増加することで、接点の遮断性能が向上する。遮断性能の向上は、直流電流の開閉など遮断距離を必要とする用途に有効である。本実施例は、電源事情や負荷の種類によって、可動コアと固定コアの開極距離を可変できる構造の電磁接触器である。   The protrusion 51 in contact with the movable insulating base 21 has a structure that can be easily cut and removed from the outside of the fixed insulating base 11. When the power supply capacity has a margin, the movable insulating base 21 moves in the direction of separating from the fixed core 12 by cutting and removing the protrusion 51 that contacts the movable insulating base 21. This movement increases the breaking distance between the movable contact 24 that moves accompanying the movable insulating base 21 and the fixed contact 14 that faces the movable contact, thereby improving the contact breaking performance. The improvement of the breaking performance is effective for applications that require a breaking distance, such as switching of direct current. The present embodiment is an electromagnetic contactor having a structure in which the opening distance between the movable core and the fixed core can be varied depending on the power supply situation and the type of load.

実施例３を説明する。図４（ａ）は本発明の第３実施例の電磁接触器の側断面図である。電磁接触器を構成する部品、本図では、接点を覆うカバーに可動絶縁台２１と接触する突起６１を設けたものである。このカバーは突起６１の有るカバー６２ａ（図４ｂ参照）と突起の無いカバー６２ｂ（図４ｃ参照）の２種類を有している。電源容量に裕度が無い用途では、突起のあるカバー６２ａを装着し、突起６１を可動絶縁台２１と抵触することで、可動コア２２が開極状態にあるとき、可動絶縁台２１が固定コア１２の方向に押し出され、可動絶縁台２１に結合された可動コア２２と可動コアに対向する固定コア１２の開極距離が減少した状態となる。また、直流電流の開閉など接点遮断距離を必要とする用途には、突起の無いカバー６２ｂを装着して、カバー装着による可動絶縁台２１への抵触を無くし、可動コア２２が開極状態にあるときの可動コアの位置を固定コア１２から開離する方向に移動する。この移動により、可動絶縁台２１に付随して動く可動接点２４と可動接点に対向する固定接点１４の遮断距離が増加することで、接点の遮断性能が向上する。   A third embodiment will be described. FIG. 4A is a side sectional view of an electromagnetic contactor according to a third embodiment of the present invention. In this figure, a projection 61 that is in contact with the movable insulating base 21 is provided on a cover that covers the contacts. This cover has two types, a cover 62a (see FIG. 4b) with protrusions 61 and a cover 62b (see FIG. 4c) without protrusions. In applications where the power capacity is not sufficient, when the movable core 22 is in an open state by mounting the cover 62a having a protrusion and making the protrusion 61 come into contact with the movable insulating base 21, the movable insulating base 21 is a fixed core. Thus, the opening distance between the movable core 22 pushed out in the direction 12 and the fixed core 12 facing the movable core is reduced. For applications that require a contact breaking distance, such as opening and closing of direct current, a cover 62b without protrusions is mounted to eliminate the conflict with the movable insulating base 21 due to the cover mounting, and the movable core 22 is in an open state. The position of the movable core at that time is moved in the direction of separating from the fixed core 12. This movement increases the breaking distance between the movable contact 24 that moves accompanying the movable insulating base 21 and the fixed contact 14 that faces the movable contact, thereby improving the contact breaking performance.

実施例４を説明する。図５（ａ）は本発明の第４実施例の電磁接触器の側断面図である。図５（ｂ）は、追加取付可能な部品（オプション部品）７２に可動絶縁台２１と抵触する突起７１を設け、電磁接触器に装着した図である。可動コア２１が開極状態にあるとき、可動絶縁台２１と抵触する突起７１により、可動絶縁台２１が固定コア１２の方向に押し出され、可動絶縁台２１に結合された可動コア２２が固定コア１２の方向に移動する。この移動により、可動コア２２と固定コア１２の開極距離を可変できる。追加取付可能な部品（オプション部品）とすることで、稼動状態の電磁接触器に対して部品を追加することで容易に仕様変更できる。   Example 4 will be described. FIG. 5A is a side sectional view of the electromagnetic contactor according to the fourth embodiment of the present invention. FIG. 5B is a diagram in which a protrusion 71 that comes into contact with the movable insulating base 21 is provided on a part (optional part) 72 that can be additionally attached, and is mounted on an electromagnetic contactor. When the movable core 21 is in an open state, the movable insulating base 21 is pushed out in the direction of the fixed core 12 by the protrusions 71 that come into contact with the movable insulating base 21, and the movable core 22 coupled to the movable insulating base 21 is fixed. Move in 12 directions. By this movement, the opening distance between the movable core 22 and the fixed core 12 can be varied. By using additional mountable parts (optional parts), the specifications can be easily changed by adding parts to the electromagnetic contactor in operation.

電磁接触器の側断面図。The sectional side view of an electromagnetic contactor. 実施例１の電磁接触器の側断面図。1 is a side sectional view of an electromagnetic contactor according to Embodiment 1. FIG. 実施例２の電磁接触器の側断面図。The sectional side view of the electromagnetic contactor of Example 2. FIG. 実施例３の電磁接触器の側断面図。The sectional side view of the electromagnetic contactor of Example 3. FIG. 実施例４の電磁接触器の側断面図。The sectional side view of the electromagnetic contactor of Example 4. FIG. 電磁接触器における吸引力曲線の説明図。Explanatory drawing of the attractive force curve in an electromagnetic contactor. 電磁接触器における操作電圧等のタイミングチャートの説明図。Explanatory drawing of timing charts, such as operation voltage in an electromagnetic contactor. 電磁接触器における吸引力特性の説明図。Explanatory drawing of the attractive force characteristic in an electromagnetic contactor.

符号の説明Explanation of symbols

１１ 固定絶縁台
１２ 固定コア
１４ 固定接点
２１ 可動絶縁台
２２ 可動コア
２３ 連結部材
２４ 可動接点
２５ 接点ばね
３１ コイル
３２ 復帰ばね
４１ 調整用部品
５１ 突起
６１ 突起
６２ａ、ｂ カバー
７１ 突起
７２ 追加取付部品 DESCRIPTION OF SYMBOLS 11 Fixed insulation stand 12 Fixed core 14 Fixed contact 21 Moveable insulation stand 22 Moveable core 23 Connecting member 24 Moveable contact 25 Contact spring 31 Coil 32 Return spring 41 Adjustment part 51 Projection 61 Projection 62a, b Cover 71 Projection 72 Additional attachment parts

Claims (4)

コイルを巻回した固定コアと、開極方向と同方向に移動可能に設けた可動コアと、該可動コアを結合し可動接点を支持する可動絶縁台と、前記可動コアを固定コアから開極するように配設した復帰ばねと、前記各部品を収納し固定接点を支持する固定絶縁台とを備える電磁接触器において、
前記可動絶縁台と前記固定絶縁台の間に、該固定絶縁台に設けた切欠穴より間隔調整用部品を装着し、前記可動絶縁台を前記固定コア方向へ移動させ、前記可動絶縁台に結合された前記可動コアと前記固定コアとの開極距離を可変とすることを特徴とする電磁接触器。 A fixed core around which a coil is wound, a movable core provided so as to be movable in the same direction as the opening direction, a movable insulating base for coupling the movable core and supporting a movable contact, and opening the movable core from the fixed core In an electromagnetic contactor comprising: a return spring disposed so as to hold; and a fixed insulating base that accommodates each component and supports a fixed contact;
Between the fixed insulating base and the movable insulation stand, attached interval adjustment part than cutout hole provided in the fixed insulating base, moving the movable insulation stand to the fixed core direction, coupled to the movable insulation stand electromagnetic contactor, characterized in that the opening distance between the fixed core and the movable core is variable. 請求項１記載の電磁接触器において、
前記可動絶縁台と前記固定絶縁台の間隔を調整する前記間隔調整用部品を前記可動絶縁台と前記固定絶縁台の間に装着可能な構造であるとともに、前記間隔調整用部品は厚さの異なる数種類からなり、前記可動絶縁台を固定コア方向へ移動させ、前記可動絶縁台に結合された前記可動コアと前記固定コアとの開極距離を段階的に可変とすることを特徴とする電磁接触器。 The electromagnetic contactor according to claim 1,
With the previous SL is structure capable mounting the component spacing adjustment between the fixed insulating base and the movable insulation stand to adjust the distance between the fixed insulating base and the movable insulation stand, the distance adjustment part having a thickness of different made several, the move the movable insulation stand to the fixed core direction, electromagnetic, characterized in that the stepwise variable opening distance between the movable core and the fixed core coupled to the movable insulation stand Contactor. コイルを巻回した固定コアと、開極方向と同方向に移動可能に設けた可動コアと、該可動コアを結合し可動接点を支持する可動絶縁台と、前記可動コアを固定コアから開極するように配設した復帰ばねと、前記各部品を収納し固定接点を支持する固定絶縁台とを備える電磁接触器において、
前記可動絶縁台の上面で接触する部分に取り外し可能な突起を前記固定絶縁台に設け、 該突起が有りの場合は、前記可動絶縁台を前記固定コア方向に押圧して前記可動絶縁台に結合された前記可動コアを前記固定コア方向に移動させ、
前記突起が切断された場合、前記可動絶縁台が前記復帰ばねに押し戻され、前記可動絶縁台に結合された前記可動コアと前記固定コアとの開極距離を変更することを特徴とする電磁接触器。 A fixed core around which a coil is wound, a movable core provided so as to be movable in the same direction as the opening direction, a movable insulating base for coupling the movable core and supporting a movable contact, and opening the movable core from the fixed core a return spring which is arranged to, in the electromagnetic contactor and a fixed insulating base which supports the fixed contact and accommodating the respective components,
Provided with a projection removable portion in contact with the movable insulation stand top to the fixed insulating boards, in the case of the projection there, coupled to the movable insulation stand to press the movable insulation stand to the fixed core direction the movable core is moved to the fixed core direction,
If the projection is cut, the electromagnetic contactor in which the movable insulation stand is pushed back to the return spring, and changes the opening distance between the movable core and the fixed core coupled to the movable insulation stand vessel. コイルを巻回した固定コアと、開極方向と同方向に移動可能に設けた可動コアと、該可動コアを結合し可動接点を支持する可動絶縁台と、前記可動コアを固定コアから開極するように配設した復帰ばねと、前記各部品を収納し固定接点を支持する固定絶縁台とを備える電磁接触器において、
前記固定絶縁台の上部に交換可能部品として設けたカバーは、前記可動絶縁台と接触する突起を有し、該カバーの突起により、前記可動絶縁台を前記固定コア方向へ移動させ、前記可動絶縁台に結合された前記可動コアと前記固定コアとの開極距離を変更することを特徴とする電磁接触器。 A fixed core around which a coil is wound, a movable core provided so as to be movable in the same direction as the opening direction, a movable insulating base for coupling the movable core and supporting a movable contact, and opening the movable core from the fixed core a return spring which is arranged to, in the electromagnetic contactor and a fixed insulating base which supports the fixed contact and accommodating the respective components,
The fixed cover provided as replaceable parts in the insulating block top is to have a projection in contact with the movable insulation stand, by the projections of the cover, moving the movable insulation stand to the fixed core direction, the movable insulation electromagnetic contactor, characterized in that to change the opening distance between the fixed core and the movable core coupled to the platform.
JP2004171067A 2004-06-09 2004-06-09 Magnetic contactor Expired - Fee Related JP4364723B2 (en)

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