JPH0353507A - Electromagnet device - Google Patents

Abstract

PURPOSE:To make it possible to easily change the spring force of a working spring by a method wherein the effective length of the working spring is changed by providing a regulating means on a tabular working spring in a freely movable state. CONSTITUTION:An electromagnet device is equipped with a polarized electromagnet 1 and an adjusting means 2. The polarized electromagnet 1 has a tabular working spring 4 which energizes a functioning member 3 in working direction by having the tip part to come in contact with the return side of the functioning member 3. The working spring 4 is formed by an almost delta-shaped plate spring which is orthogonally protruding to the center from a side of a square- shaped supporting plate 19, both side parts of which are bent in Z-shape. The working spring 4 is attached by fitting the side edge part of the supporting plate 19 into the mounting groove 18 provided on a coil frame 6, and the tip of the working spring 4 faces the edge of the return side of the functioning member 3. The adjusting means 2 is provided in a freely movable manner in the direction linking the base part and the tip part between the base part 5 and the tip part of the working spring 4, and to changes the effective length of the working spring 4 by its movement.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、電磁接触器等に適用される電磁石装買に関
するものである． 〔従来の技術〕 従来、特公昭５８−２０９８３６号等の電磁接触器に適
用される電磁石装置は、部品Φ交差のばらつきにより、
電磁石装置の適性な吸引力およびばね負荷が得られない
ことがあった。このため、電磁石装置の動作ばねのばね
力を調整することが考えられ〔発明が解決しようとする
課題〕 ところが、動作ばねを調整する場合、電｛Ｒ接触器のケ
ースから１ｌ磁石装置を取り出し、ペンチ等で動作ばね
の曲げ長さを変えて対応しており、そのため調整作業の
手間がかかるという欠点があった。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electromagnetic device applied to an electromagnetic contactor, etc. [Prior Art] Conventionally, an electromagnet device applied to an electromagnetic contactor such as Japanese Patent Publication No. 58-209836 has problems due to variations in component Φ intersection.
Appropriate attraction force and spring load of the electromagnetic device could not be obtained in some cases. For this reason, it has been considered to adjust the spring force of the operating spring of the electromagnetic device [a problem to be solved by the invention]. However, when adjusting the operating spring, the 1l magnet device is removed from the case of the electric contactor, This is achieved by changing the bending length of the operating spring using pliers, etc., which has the drawback of requiring time and effort for adjustment work.

したがって、この発明の目的は、簡単に動作ばねのばね
力を調整することができる電磁石装置を提供することで
ある． （！ＩＩＩを解決するための手段） この発明の電磁石装置は、先端部が作動体の復帰側に当
接して前記作動体を動作方向に付勢する板状の動作ばね
を有する有極１ｔ磁石と、前記動作ばねの基部と前記先
端部との間で前記基部と前記先端部とを結ぶ方向に移動
自在に設けられて移動により前記動作ばねの有効長を変
更する調整手段とを備えたものである． 〔作用〕 この発明の構成によれば、板状の動作ばねに調整手段を
移動自在に設けて動作ばねの有効長を変更できるように
したため、動作ばねのばね力を簡単に変更することがで
きる。Therefore, an object of the present invention is to provide an electromagnetic device that can easily adjust the spring force of an operating spring. (Means for Solving Problem III) The electromagnetic device of the present invention includes a polarized 1t magnet having a plate-shaped operating spring whose tip abuts against the return side of the operating body and urges the operating body in the operating direction. and an adjustment means that is provided between the base and the tip of the operating spring so as to be movable in a direction connecting the base and the tip, and that changes the effective length of the operating spring by movement. It is. [Function] According to the configuration of the present invention, since the adjustment means is movably provided on the plate-shaped operating spring so that the effective length of the operating spring can be changed, the spring force of the operating spring can be easily changed. .

〔実施例〕〔Example〕

この発明の第１の実ｊｋ例を適用た電磁接触器の第１図
ないし第９図に基づいて説明する．すなわち、この電磁
石装置は、有極電磁石１と、調整千段２とを有する。An explanation will be given based on FIGS. 1 to 9 of an electromagnetic contactor to which the first practical example of this invention is applied. That is, this electromagnet device has a polarized electromagnet 1 and a thousand adjustment stages 2.

有極電磁石１は、先端部が作動体３の復帰側に当接して
作動体３を動作方向に付勢する板状の動作ばね４を有す
る。有極電磁石ｌは、第６図および第７図に示すように
、動作ばね４および作動体３のほか、コイル枠６と、コ
イル７と、作動体３の一端の接極子８と、一対の補助ヨ
ーク９と、板厚方向に着磁された永久磁石１０と、一対
のヨーク１１と、磁気結合用の筒状磁性体ｌ２とを有す
る． 動作ばね４は、両側部をＺ字形に折曲した４角形状の支
持板ｌ９の１片より中央に一体に突出した略３角形状の
板ばねで形威しており、支持仮ｌ９の側縁部をコイル枠
６に形威した取付ｉＪ＄１８に挿着して取付け、動作ば
ね４の先端で作動体３の復帰側端部に対向している。The polarized electromagnet 1 has a plate-shaped operating spring 4 whose tip comes into contact with the return side of the operating body 3 and biases the operating body 3 in the operating direction. As shown in FIGS. 6 and 7, the polar electromagnet l includes, in addition to the operating spring 4 and the operating body 3, a coil frame 6, a coil 7, an armature 8 at one end of the operating body 3, and a pair of It has an auxiliary yoke 9, a permanent magnet 10 magnetized in the thickness direction, a pair of yokes 11, and a cylindrical magnetic body l2 for magnetic coupling. The operating spring 4 is a substantially triangular leaf spring that protrudes centrally from one piece of a square support plate l9 with both sides bent into a Z-shape. The edge portion is inserted and attached to the mounting device 18 formed in the coil frame 6, and the tip of the operating spring 4 faces the return side end of the actuating body 3.

無励磁では第７図に示すように永久磁石１０により磁束
Φ１　（細Ｎｓ）が磁路に流れ作動体３は第７図の状態
に保持され作動体３の復帰側端部で動作ばね４を弾性変
形している。励磁ではコイル７による磁束Φ２が破線の
ように磁路を流れ、作動体３の接極子８が矢印Ｘの方向
に移動してヨーク１１に吸引される． 調整千段２は、動作ばね４の基部５と先端部との間で基
部５と先端部とを結ぶ方向に移動自在に設けられて移動
により動作ばね４の有効長を変更する。この調整手段２
は第１図および第３図に示すように動作ばね４の中間部
に差し込まれるスリ・ット部ｌ３を有する支持部１４と
、支持部ｌ４を保持する基部１５からなる．基部ｌ５は
長手力向に段階的に板厚が大きくなるようにしており、
コイル枠６の支持突起ｌ６に当接する。また支持部ｌ４
のスリット部ｌ３を動作ばね４に通すため支持部ｌ４を
貫通する貫通孔１７をコイル枠６に形威している． スリソト部１３が動作ばね４を先端部または基部５の方
向に移動すると第４図のように有効長Ｅが変化する．一
般に片持ちの仮ばねによるばね定数Ｋは Ｋ＝Ｅｂｔ３／４ｋＪツ である．第３図に示すように、Ｅは縦弾性係数、ｂは動
作ばね４の基部５の根元幅、ｔは板厚、ｋは形状係数、
ｌは有効長である．したがって有効長ｅを短くするとＫ
が大きくなるので、動作ばね４の設計時にＫを小さく設
定しておく．　第１図において、２０は下ケース、２ｌ
は上ケースであり、電磁石装置八が下ケース２０に収納
され、下ケース２０の取付孔２２に上ケース２ｌの取付
突起２３を係止することにより下ケース２０の開口が閉
じられるとともに上ケース２ｌの下面で電磁石装置Ａを
固定する．すなわち、コイル枠６に上ケース２１に弾接
するばね部２４を設けて、上ケース２ｌを被せることに
よりばね部２４を下ケース２０に押し電磁石装置Ａを下
ケース２０に固定する．この場合、調整手段２は、基部
ｌ５が下ケース２０の底部と電磁石装ＩＡとの間に介在
され、基部１５の下面に突設した突起２５が底壁のスリ
ソト２６に通され、突起２５の側面に形威した位置決め
突起２７がスリット２６に形威された位置決め切欠２８
に係止する．２９は位置決め切欠２８を弾性変形可能に
するスリットである．また基部ｌ５の上面は板厚が漸次
または段階的に変化しており、この上面がコイル枠６の
支持突起ｌ６に当接されているため、基部ｌ５をスライ
ドするとその板厚が変化するので、第５図のように電磁
石装置Ａが支持突起ｌ６と反対側の端部３０を支点にし
てたとえば想保線のように回動する。When not energized, as shown in FIG. 7, the magnetic flux Φ1 (fine Ns) flows through the magnetic path due to the permanent magnet 10, and the actuating body 3 is held in the state shown in FIG. It is elastically deformed. During excitation, the magnetic flux Φ2 from the coil 7 flows through the magnetic path as shown by the broken line, and the armature 8 of the actuator 3 moves in the direction of the arrow X and is attracted to the yoke 11. The adjustment stage 2 is provided movably between the base 5 and the tip of the operating spring 4 in a direction connecting the base 5 and the tip, and changes the effective length of the operating spring 4 by movement. This adjustment means 2
As shown in FIGS. 1 and 3, it consists of a support part 14 having a slit part l3 that is inserted into the middle part of the operating spring 4, and a base part 15 that holds the support part l4. The thickness of the base l5 increases stepwise in the longitudinal direction,
It comes into contact with the support protrusion l6 of the coil frame 6. Also, the support part l4
A through hole 17 is formed in the coil frame 6 to pass through the support part l4 in order to pass the operating spring 4 through the slit part l3. When the slit section 13 moves the operating spring 4 toward the tip or base 5, the effective length E changes as shown in FIG. Generally, the spring constant K of a cantilevered temporary spring is K=Ebt3/4kJ. As shown in FIG. 3, E is the longitudinal elastic modulus, b is the base width of the base 5 of the operating spring 4, t is the plate thickness, k is the shape factor,
l is the effective length. Therefore, if the effective length e is shortened, K
, so when designing the operating spring 4, set K to a small value. In Figure 1, 20 is the lower case, 2l
is an upper case, in which the electromagnet device 8 is housed in the lower case 20, and by locking the mounting protrusion 23 of the upper case 2l into the mounting hole 22 of the lower case 20, the opening of the lower case 20 is closed and the upper case 2l is closed. Fix electromagnet device A on the bottom surface of. That is, the coil frame 6 is provided with a spring part 24 that comes into elastic contact with the upper case 21, and by covering the upper case 2l, the spring part 24 is pushed against the lower case 20 and the electromagnet device A is fixed to the lower case 20. In this case, in the adjusting means 2, the base l5 is interposed between the bottom of the lower case 20 and the electromagnet device IA, and the protrusion 25 protruding from the lower surface of the base 15 is passed through the slot 26 on the bottom wall. A positioning notch 28 in which a positioning protrusion 27 formed on the side surface is formed in the slit 26.
Lock it to. 29 is a slit that allows the positioning notch 28 to be elastically deformed. In addition, the thickness of the upper surface of the base l5 changes gradually or stepwise, and since this upper surface is in contact with the support protrusion l6 of the coil frame 6, the thickness changes when the base l5 is slid. As shown in FIG. 5, the electromagnet device A rotates, for example, like a soho line, using the end 30 on the opposite side of the support protrusion 16 as a fulcrum.

３ｌは伝達レバーであり、中間の軸部３２がコイル枠６
の軸受け部３３に軸支され、一端部３４が作動体３の連
桔枠３５に、係合し、他端部３６が第１図のように上ケ
ース２ｌの挿通孔３７に嵌入している．４６は上ケース
２ｌに収納された接点装置であり、可動接点板を有し往
復動作可能な可動枠３８と、固定接点仮３９と、端子４
０と、復帰ばね４ｌとからなり、可動枠３８の一端の凹
部４２に伝達レハー３１の他端部３６が係合している。3l is a transmission lever, and the intermediate shaft portion 32 is connected to the coil frame 6.
One end 34 engages with the connecting frame 35 of the operating body 3, and the other end 36 fits into the insertion hole 37 of the upper case 2l as shown in FIG. ．． 46 is a contact device housed in the upper case 2l, which includes a movable frame 38 having a movable contact plate and capable of reciprocating movement, a temporary fixed contact 39, and a terminal 4.
0 and a return spring 4l, and the other end 36 of the transmission lever 31 is engaged with a recess 42 at one end of the movable frame 38.

４４は中カバー、４５は端子カバーである．，この電磁
接触器は、コイル７に電圧を印加すると、作動体３が動
作し伝達レバー３ｌが軸部３２を中心に回動して可動枠
３８が作動体３と反対向きに動作し、第８図に示すよう
に可動接点板の可動接点４３が固定接点板３９の固定接
点４４に接触し接点圧ばね４７により接点圧が付与され
るとともに復帰ばね４１を圧縮する．またコイルマの電
圧の印加を停止すると、復帰ばね４】．接点圧ばね４７
および永久磁石ｌＯの吸引力により作動体３が復帰し、
可動接点４３が固定接点４４から開離する． 第９図は作動体３のストロークに対する磁気吸引力およ
びばね負荷の特性であり、Ｐ１は動作吸引力曲線、Ｐ２
は動作感動吸引力曲線、Ｐ３は開放感動吸引力曲線、Ｐ
４は開放吸引力曲線であり、Ｐ５は復帰ばね４１，接点
圧ばね４７および動作ばね４により、動作ばね４のある
有効長ｌで設定されたばね負荷線であり、作動体３のス
トロークの復帰側および動作側で動作時の吸引力および
復帰時の吸引力かばね負荷をクリアしており整合状態に
なっている。44 is an inner cover, and 45 is a terminal cover. In this electromagnetic contactor, when a voltage is applied to the coil 7, the actuating body 3 operates, the transmission lever 3l rotates around the shaft portion 32, the movable frame 38 moves in the opposite direction to the actuating body 3, and the actuating body 3 operates. As shown in FIG. 8, the movable contact 43 of the movable contact plate contacts the fixed contact 44 of the fixed contact plate 39, contact pressure is applied by the contact pressure spring 47, and the return spring 41 is compressed. Also, when the voltage application to the coil magnet is stopped, the return spring 4]. Contact pressure spring 47
The actuating body 3 returns to its original position due to the attractive force of the permanent magnet IO,
The movable contact 43 separates from the fixed contact 44. FIG. 9 shows the characteristics of the magnetic attraction force and spring load with respect to the stroke of the actuating body 3, where P1 is the operating attraction force curve, P2
is the operating suction force curve, P3 is the open suction suction force curve, P
4 is an opening attraction force curve, and P5 is a spring load line set at a certain effective length l of the operating spring 4 by the return spring 41, the contact pressure spring 47, and the operating spring 4, and P5 is the spring load line set at a certain effective length l of the operating spring 4, which is the return side of the stroke of the operating body 3. And on the operating side, the suction force during operation and the suction force or spring load upon return are cleared and are in a consistent state.

つぎに、動作ばね４を調整する場合、下ケース２０の調
整手段２の突起２５を下ケース２０の外部から操作し、
動作ばね４の有効長Ｅを変化する。Next, when adjusting the operating spring 4, operate the protrusion 25 of the adjustment means 2 of the lower case 20 from outside the lower case 20,
The effective length E of the operating spring 4 is changed.

このとき位置決め突起２７が位置決め切欠２８を乗り越
えるため、クリック感触が得られる。Ｐ６はその有効長
ｌを小さくしたときのばね負ｒｒ線である． また調整千段２の操作により、電磁石装置Ａが第５図の
ように回動ずるため、可動枠３８が動作方向に移動し、
これにより可動接点４３の固定接点４４に対する押し込
み量を調整することが可能になる。At this time, the positioning protrusion 27 overcomes the positioning notch 28, so that a click feeling is obtained. P6 is the spring negative rr line when its effective length l is reduced. Furthermore, by operating the adjustment stage 2, the electromagnet device A rotates as shown in FIG. 5, so the movable frame 38 moves in the operating direction.
This makes it possible to adjust the amount by which the movable contact 43 is pushed into the fixed contact 44.

この実施例によれば、板状の動作ばね４に調整手段２を
移動自在に設けて勤作ばね４の有効長ｌを変更できるよ
うにしたため、動作ばね４のばね力を簡単に変更するこ
とができる． また、ＵｆＪ整手段２のｉＪＲ整に伴い、接点の押し込
み量も調整でき、１部品で２つの調整が同時に行えるの
で低コスト化できる。According to this embodiment, the adjustment means 2 is movably provided on the plate-shaped operating spring 4 so that the effective length l of the working spring 4 can be changed, so that the spring force of the operating spring 4 can be easily changed. Can be done. Further, along with the iJR adjustment of the UfJ adjustment means 2, the pushing amount of the contact can also be adjusted, and since two adjustments can be made simultaneously with one component, costs can be reduced.

この発明の第２の実施例を第１０図に示す。すなわち、
この電磁石装置は、調整千段２の板厚を均一にしたもの
で、接点の押し込み量の調整のない例である．その他は
第１の実施例と同様である。A second embodiment of the invention is shown in FIG. That is,
This electromagnetic device is an example in which the plate thickness of the two adjustment steps is made uniform, and there is no adjustment of the pushing amount of the contact. The rest is the same as the first embodiment.

〔発明の効果〕〔Effect of the invention〕

この発明の電磁石装置によれば、板状の動作ばねに調整
手段を移動自在に設けて動作ばねの有効長を変更できる
ようにしたため、動作ばねのばね力を簡単に変更するこ
とができるという効果がある．According to the electromagnetic device of the present invention, the effective length of the operating spring can be changed by movably providing the adjusting means on the plate-shaped operating spring, so that the spring force of the operating spring can be easily changed. There is.

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

第ｌ図はこの発明の第１の実施例を下側からみた分解斜
視図、第２図は上側からみた分解斜視図、第３図は動作
ばねと調整手段の関係を示す説明図、第４図は調整手段
の動作状態の説明図、第５図は電磁石装置の調整手段に
よる回動状態を説明する説明図、第６図は電磁石装置の
分解斜視図、第７図は電磁石の動作説明図、第８副は電
磁接触器の断面図、第９図は作動体のストロークに対す
る磁気吸引力およびばね負荷特性図、第ｌＯ同は第２の
実施例の動作ばねおよび調整手段の分解斜視図である． ｌ・・・有極電磁石、２・・・調整手段、３・・・作動
体、４・・・動作ばね、５・・・基部 第 ３ 図 第 ４ 図 第 ５ 図 １Ｂ 第 ７ 図 第 ９ 図 箱Fig. 1 is an exploded perspective view of the first embodiment of the present invention seen from the bottom, Fig. 2 is an exploded perspective view seen from the top, Fig. 3 is an explanatory diagram showing the relationship between the operating spring and the adjustment means, and Fig. 4 is an exploded perspective view of the first embodiment of the invention. The figure is an explanatory diagram of the operating state of the adjusting means, FIG. 5 is an explanatory diagram of the rotating state of the electromagnet device by the adjusting means, FIG. 6 is an exploded perspective view of the electromagnet device, and FIG. 7 is an explanatory diagram of the operation of the electromagnet. , No. 8 is a sectional view of the electromagnetic contactor, FIG. 9 is a diagram of the magnetic attraction force and spring load characteristics with respect to the stroke of the actuating body, and No. 10 is an exploded perspective view of the operating spring and adjustment means of the second embodiment. be. l...Polarized electromagnet, 2...Adjusting means, 3...Operating body, 4...Operation spring, 5...Base 3 Figure 4 Figure 5 Figure 1B Figure 7 Figure 9 box

Claims (1)

【特許請求の範囲】[Claims] 先端部が作動体の復帰側に当接して前記作動体を動作方
向に付勢する板状の動作ばねを有する有極電磁石と、前
記動作ばねの基部と前記先端部との間で前記基部と前記
先端部とを結ぶ方向に移動自在に設けられて移動により
前記動作ばねの有効長を変更する調整手段とを備えた電
磁石装置。a polarized electromagnet having a plate-shaped operating spring whose tip abuts against the return side of the actuating body to bias the actuating body in the operating direction; An electromagnet device comprising: an adjusting means that is movably provided in a direction connecting the tip end portion and that changes the effective length of the operating spring by movement.