WO2019180934A1

WO2019180934A1 - Contact switch

Info

Publication number: WO2019180934A1
Application number: PCT/JP2018/011798
Authority: WO
Inventors: 小林　篤志; 勝俊五十嵐
Original assignee: 三菱電機株式会社
Priority date: 2018-03-23
Filing date: 2018-03-23
Publication date: 2019-09-26
Also published as: JP6540919B1; CN111886667A; CN111886667B; JPWO2019180934A1

Abstract

This contact switch is provided with: a fixed iron core (10); a fixed contactor (8) provided with a pair of fixed contacts (7); a movable iron core (9) disposed corresponding to the fixed iron core (10) and driven by the fixed iron core (10); a movable contactor (2) provided, on the bottom side thereof, with a pair of movable contacts (3) which face the pair of fixed contacts (7); a movable plate spring (1) provided with a pressing section (1B) that is in contact with the rear surface side at the position where the movable contacts (3) are provided in the movable contactor (2); and a contactable support (4) that is disposed so as to be in contact with a center section of the movable plate spring (1), and that transmits the drive force of the movable iron core (9) to the movable plate spring (1), wherein the movable contactor (2) is provided with groove-shaped notched sections (2A) that extend vertically on both surfaces in the longitudinal center section of the movable contactor (2), and the movable plate spring (1) is provided with engagement sections (1A) that engage with the notched sections.

Description

接点開閉器Contact switch

　本発明は、電源と負荷との間の閉路または開路に使用される接点開閉器に関するものである。 The present invention relates to a contact switch used for closing or opening between a power source and a load.

　接点開閉器とは、固定鉄心に設けられた操作コイルの励磁により、可動鉄心を固定鉄心に接離させ、可動鉄心にクロスバーを介して連結された可動接触子を連動させることにより、当該可動接触子に設けられた可動接点を固定接点に接離して電路の開閉を行う装置である。 A contact switch is a movable switch that is moved by moving a movable core connected to and through a crossbar by moving the movable core to and from the fixed core by exciting an operating coil provided on the fixed core. It is a device that opens and closes an electric circuit by moving a movable contact provided on a contact to and from a fixed contact.

　特許文献１には、可動接点が接合された可動接触子と、可動接触子に対向し可動接点と接触する固定接点が接合された固定接触子、可動接触子と固定接触子が接触時に所定接触圧力を維持するための押しばね、この押しばねのばね圧を可動接点に伝達する可動板ばねとを備えた接点開閉器が開示されている。 In Patent Document 1, a movable contact having a movable contact joined thereto, a fixed contact having a fixed contact opposed to the movable contact facing the movable contact, and a predetermined contact when the movable contact and the fixed contact are in contact with each other. There is disclosed a contact switch comprising a pressing spring for maintaining pressure and a movable leaf spring that transmits the spring pressure of the pressing spring to a movable contact.

　可動接触子、可動板ばねはそれぞれクロスバーによりガイドされている。操作コイルの励磁によりクロスバーが駆動され、可動接点と固定接点が接触する接点開閉器の閉路状態において、可動板ばねは、クロスバーから押しばねを介して伝達される力を、可動接触子の可動接点の裏面に伝えることで、可動接触子に曲げ応力が発生することを防止する機能を持っている。 The movable contact and the movable leaf spring are each guided by a cross bar. In the closed state of the contact switch where the cross bar is driven by the excitation of the operating coil and the movable contact and the fixed contact are in contact, the movable leaf spring transmits the force transmitted from the cross bar via the push spring to the movable contact. By transmitting to the back of the movable contact, it has a function to prevent bending stress from being generated in the movable contact.

実開昭５３－１１８０６６号公報Japanese Utility Model Publication No.53-118066

　上記特許文献１では、可動接触子と可動板ばねがそれぞれ別個にクロスバーに支持されている。そのため、可動板ばねと可動接触子の接触位置は、可動接触子とクロスバーのズレや、可動板ばねとクロスバーのズレが、可動接触子と可動板ばねの接触位置のズレとして合成されてしまい、この位置ズレが押しばねから可動接点に伝達する力にバラつきが生じることとなる。このバラつきにより、可動接点および固定接点間の接触抵抗にバラつきが生じやすく、通電時に接点間で大きな発熱を生じる場合があり、接点の寿命が短くなる虞があった。 In the above Patent Document 1, the movable contact and the movable leaf spring are separately supported by the crossbar. Therefore, the contact position between the movable leaf spring and the movable contact is determined by combining the displacement between the movable contactor and the crossbar, and the displacement between the movable leaf spring and the crossbar as the displacement between the movable contactor and the movable leaf spring. Therefore, the force transmitted from the displacement to the movable contact by the positional deviation varies. Due to this variation, the contact resistance between the movable contact and the fixed contact is likely to vary, and a large amount of heat may be generated between the contacts during energization, which may shorten the contact life.

　本発明は、上述した課題に鑑みてなされたものであって、押しばねから可動接点に伝達する力のばらつきを低減し、可動接点および固定接点間の接触抵抗を安定化させることを目的とする。 The present invention has been made in view of the above-described problems, and it is an object of the present invention to reduce variation in force transmitted from a push spring to a movable contact and to stabilize contact resistance between the movable contact and the fixed contact. .

　上述した課題を解決し、目的達成するために、本発明の接点開閉器は、固定鉄心と、一対の固定接点を備える固定接触子と、固定鉄心に対応して配置され、固定鉄心駆動される可動鉄心と、固定接点と対向して設けられる一対の可動接点を下面側に備える可動接触子と、可動接触子における可動接点が設けられる位置の裏面側に当接する押圧部を備える可動板ばねと、可動板ばねの中央部に当接するように配置され、可動鉄心の駆動力を可動板ばねに伝える可接支えと、を備え、可動接触子は、可動接触子の長手方向中央部の両側面に、上下方向に延びる溝状の切欠き部を備え、可動板ばねは、切欠き部に係合する係合部を備える。 In order to solve the above-described problems and achieve the object, a contact switch according to the present invention is disposed corresponding to a fixed core, a fixed contact including a pair of fixed contacts, and a fixed core, and is driven by the fixed core. A movable iron core, a movable contact provided on the lower surface side with a pair of movable contacts provided to face the fixed contact, and a movable leaf spring provided with a pressing portion contacting the back side of the position where the movable contact is provided in the movable contact A movable support that is disposed so as to abut on the central portion of the movable leaf spring and transmits a driving force of the movable iron core to the movable leaf spring. In addition, a groove-shaped notch portion extending in the vertical direction is provided, and the movable leaf spring includes an engaging portion that engages with the notch portion.

　本発明の接点開閉器は、可動板ばねが、可動接触子の可動接点裏面側を押圧する構成において、可動接触子に対する可動板ばねの位置ずれを抑えることができ、可動鉄心の駆動力を安定して両可動接点に供給することが可能であり、可動接点および固定接点間の接触抵抗を安定化させるという効果を奏する。 In the contact switch according to the present invention, in a configuration in which the movable leaf spring presses the movable contact back surface side of the movable contact, the displacement of the movable leaf spring relative to the movable contact can be suppressed, and the driving force of the movable iron core is stabilized. Thus, it can be supplied to both movable contacts, and the contact resistance between the movable contact and the fixed contact is stabilized.

実施の形態１の接点開閉器の斜視図である。1 is a perspective view of a contact switch according to Embodiment 1. FIG. 実施の形態１の接点開閉器における、可動接触子の上面図である。3 is a top view of a movable contact in the contact switch according to Embodiment 1. FIG. 本発明の実施の形態１の接点開閉器の可動板ばね１の斜視図である。It is a perspective view of the movable leaf | plate spring 1 of the contact switch of Embodiment 1 of this invention. 本発明の実施の形態１の接点開閉器の可動板ばね１と可動接触子２との係合状態を表す斜視図である。It is a perspective view showing the engagement state of the movable leaf | plate spring 1 and the movable contact 2 of the contact switch of Embodiment 1 of this invention. 本発明の実施の形態１の接点開閉器の可動板ばね１と可動接触子２と可接支え４との係合状態を表す斜視図である。It is a perspective view showing the engagement state of the movable leaf | plate spring 1, the movable contact 2, and the contactable support 4 of the contact switch of Embodiment 1 of this invention. 本発明の実施の形態１の接点開閉器の接点開極時の断面図である。It is sectional drawing at the time of the contact opening of the contact switch of Embodiment 1 of this invention. 本発明の実施の形態１の接点開閉器の接点開極時の断面図である。It is sectional drawing at the time of the contact opening of the contact switch of Embodiment 1 of this invention. 図８は、本発明の実施の形態１の接点開閉器の接点閉路状態の断面図である。FIG. 8 is a cross-sectional view of the contact switch in the contact switch according to the first embodiment of the present invention. 本発明の実施の形態２の接点開閉器の可動板ばね１と可動接触子２との係合状態を表す斜視図である。It is a perspective view showing the engagement state of the movable leaf | plate spring 1 and the movable contact 2 of the contact switch of Embodiment 2 of this invention. 本発明の実施の形態２の接点開閉器の可動板ばね１と可動接触子２と可接支え４との係合状態を表す斜視図である。It is a perspective view showing the engagement state of the movable leaf | plate spring 1, the movable contact 2, and the contactable support 4 of the contact switch of Embodiment 2 of this invention. 本発明の実施の形態１、２の変形例の接点開閉器の可動板ばね１と可動接触子２との係合状態を表す斜視図である。It is a perspective view showing the engagement state of the movable leaf | plate spring 1 and the movable contact 2 of the contact switch of the modification of

Embodiment

1, 2 of this invention.

　以下に、本発明に係る接点開閉器の実施の形態を図面に基づいて詳細に説明する。なお、実施の形態によりこの発明が限定されるものではない。 Hereinafter, embodiments of the contact switch according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

実施の形態１．
　図１は、実施の形態１の接点開閉器について、固定接触子を含めて示す斜視図である。固定接触子８には固定接点７が設けられている。可動接触子２には、可動接点３が設けられており、可動接触子２は、可動板バネ１、可接支え４およびクロスバー５と連結されている。 Embodiment 1 FIG.
1 is a perspective view showing a contact switch according to Embodiment 1 including a fixed contact. A fixed contact 7 is provided on the fixed contact 8. The movable contact 2 is provided with a movable contact 3, and the movable contact 2 is connected to the movable leaf spring 1, the movable support 4 and the cross bar 5.

　図２は、実施の形態１の接点開閉器を上方から見た場合の、可動接触子の上面図である。後に説明する図６～８は、図２におけるＡ－Ａ線で接点開閉器を切断した場合の断面図である。なお、実施の形態１の接点開閉器を説明するために、Ｘ方向、Ｙ方向およびＺ方向を、それぞれ、図１、図３～５に図示するように、互いに直交する方向として定義する。Ｘ方向は、一対の可動接点３や一対の固定接点７が並ぶ方向である。Ｚ方向は、可動接触子が移動する方向である。また、Ｚ方向正側を上、負側を下と定義する。 FIG. 2 is a top view of the movable contact when the contact switch according to the first embodiment is viewed from above. 6 to 8 described later are cross-sectional views when the contact switch is cut along the line AA in FIG. In order to describe the contact switch according to the first embodiment, the X direction, the Y direction, and the Z direction are defined as directions orthogonal to each other as shown in FIGS. The X direction is a direction in which the pair of movable contacts 3 and the pair of fixed contacts 7 are arranged. The Z direction is the direction in which the movable contact moves. Also, the positive side in the Z direction is defined as up and the negative side is defined as down.

　図３は、本発明の実施の形態１の接点開閉器の可動板ばね１を示す斜視図である。可動板ばね１は、Ｘ方向が長手方向となるように形成されている。可動板ばね１は、長手方向の中央部両側に、下方に折り曲げられて延びる係合部１Ａを備える。また、可動板ばね１は、長手方向両端付近に、可動接触子２に当接するためのＶ字状に折り曲げられた形状の押圧部１Ｂを備える。また、可動板ばね１は、長手方向中央部と長手方向両端部との間において、Ｙ方向両側に、上方に折り曲げられて延びるＬ字形状の曲げ部１Ｃと、を備える。可動板ばね１はステンレス鋼製であり、ステンレス鋼の平板を基材としたプレス加工により形成されている。 FIG. 3 is a perspective view showing the movable leaf spring 1 of the contact switch according to Embodiment 1 of the present invention. The movable leaf spring 1 is formed so that the X direction is the longitudinal direction. The movable leaf spring 1 includes engaging portions 1A that are bent downward and extend on both sides of the central portion in the longitudinal direction. Further, the movable leaf spring 1 includes a pressing portion 1B having a shape bent in a V shape for contacting the movable contact 2 near both ends in the longitudinal direction. The movable leaf spring 1 includes an L-shaped bent portion 1C that is bent upward and extends on both sides in the Y direction between the longitudinal center portion and both longitudinal end portions. The movable leaf spring 1 is made of stainless steel, and is formed by press working using a stainless steel flat plate as a base material.

図４は、本発明の実施の形態１の接点開閉器の可動板ばね１と可動接触子２との係合状態を表す斜視図である。可動接触子２は銅製である。可動接触子は、Ｘ方向が長手方向となるように形成されている。可動接触子２は、長手方向中央両側に、Ｚ方向に延びる溝状の切欠き部２Ａを備える。可動接触子２の長手方向両端付近の下面に、可動接点３が接合されている。可動板ばね１の押圧部１Ｂは、可動接触子２の上面と、可動接点３と対応する位置において、当接する。また、可動板ばね１の中央Ｌ字形状の係合部１Ａが可動接触子２の切欠き部２Ａに係合している。可動板ばね１の中央部に上方から力が加えられ、可動板ばね１が撓んだ場合、係合部１Ａが溝状の切欠き部２Ａに沿って移動する。この係合により、可動板ばね１と可動接触子２が位置決めされる。この位置決め構造により、可動板ばね１の押圧部１Ｂと可動接触子２の接触部の位置がＸ方向に変動することを抑制する。なお、可動板ばね１の中央Ｌ字形状の係合部１Ａと、可動接触子２の切欠き部２Ａは、可動板ばね１と可動接触子２のＺ方向の移動には影響を与えない。 FIG. 4 is a perspective view showing an engaged state between the movable leaf spring 1 and the movable contact 2 of the contact switch according to the first embodiment of the present invention. The movable contact 2 is made of copper. The movable contact is formed such that the X direction is the longitudinal direction. The movable contact 2 includes groove-shaped notches 2A extending in the Z direction on both sides in the longitudinal center. The movable contact 3 is joined to the lower surface of the movable contact 2 near both ends in the longitudinal direction. The pressing portion 1 B of the movable leaf spring 1 comes into contact with the upper surface of the movable contact 2 at a position corresponding to the movable contact 3. Further, the central L-shaped engaging portion 1 A of the movable leaf spring 1 is engaged with the notch portion 2 A of the movable contact 2. When a force is applied to the central portion of the movable plate spring 1 from above and the movable plate spring 1 is bent, the engaging portion 1A moves along the groove-shaped notch portion 2A. By this engagement, the movable leaf spring 1 and the movable contact 2 are positioned. With this positioning structure, the position of the pressing portion 1B of the movable leaf spring 1 and the contact portion of the movable contact 2 is prevented from changing in the X direction. The central L-shaped engaging portion 1A of the movable leaf spring 1 and the cutout portion 2A of the movable contact 2 do not affect the movement of the movable leaf spring 1 and the movable contact 2 in the Z direction.

図５は、本発明の実施の形態１の接点開閉器の可動板ばね１と可動接触子２と可接支え４との係合状態を表す斜視図である。Ｌ字状の曲げ部１Ｃと可接支え４のＵ字状の立設部４Ｃとの係合により、可動板ばね１が可接支え４により位置決めされる。これにより、可接支え４に対する可動板ばね１のＸ方向の位置ずれを低減することが可能である。また、Ｌ字状の曲げ部１Ｃを４か所設けることにより、可接支え４に対する可動板ばね１のＸ－Ｙ方向の回転ずれを低減することが可能である。また、さらには、Ｌ字状の曲げ部１Ｃが可接支え４のＵ字状の立設部４Ｃに当接することにより、可接支え４に対する可動板ばね１のＸ－Ｚ方向回転方向のズレやガタツキも抑制することが可能である。ここで、可接支え４はステンレス鋼製であり、プレス加工により形成されている。 FIG. 5 is a perspective view showing an engaged state of the movable leaf spring 1, the movable contact 2, and the connectable support 4 of the contact switch according to the first embodiment of the present invention. The movable leaf spring 1 is positioned by the contactable support 4 by the engagement between the L-shaped bent portion 1 C and the U-shaped standing portion 4 C of the contactable support 4. Thereby, it is possible to reduce the displacement of the movable leaf spring 1 in the X direction with respect to the contactable support 4. Further, by providing four L-shaped bent portions 1C, it is possible to reduce the rotational deviation of the movable leaf spring 1 in the XY direction with respect to the contactable support 4. Further, when the L-shaped bent portion 1C abuts on the U-shaped standing portion 4C of the connectable support 4, the displacement of the movable leaf spring 1 relative to the connectable support 4 in the XZ direction rotation direction is further improved. And backlash can be suppressed. Here, the contactable support 4 is made of stainless steel and is formed by pressing.

　図６は、本発明の実施の形態１の接点開閉器の可動子の接点開極時の断面図である。可動鉄心９は、クロスバー５と一体化されている。クロスバー５のばね受け部５Ａと可接支え４のばね受け部４Ａの間には、押しばね６が挿入されており、押しばね６は可接支え４を下向きに付勢する。押しばね６の付勢力により、クロスバー５の上面５Ｂと可接支え４の交差部４Ｂとで、可動接触子２と可動板ばね１とが、挟持されている。 FIG. 6 is a cross-sectional view of the contact switch of the contact switch according to Embodiment 1 of the present invention when the contact is opened. The movable iron core 9 is integrated with the cross bar 5. A push spring 6 is inserted between the spring receiving portion 5A of the cross bar 5 and the spring receiving portion 4A of the connectable support 4, and the press spring 6 biases the connectable support 4 downward. The movable contact 2 and the movable leaf spring 1 are sandwiched between the upper surface 5B of the cross bar 5 and the intersecting portion 4B of the contactable support 4 by the urging force of the pressing spring 6.

　図７は、本発明の実施の形態１の接点開閉器の接点開極時の断面図である。可動鉄心９と固定鉄心１０の接触面間の距離Ｌ１は可動接点３と固定接点７の接触面間の距離Ｌ２よりも長い構造を有している。図示しない操作コイルに流される駆動電流により、固定鉄心１０は励磁される。励磁された固定鉄心１０に可動鉄心９が吸引されることにより、可動鉄心９と一体化して組み合されているクロスバー５、クロスバー５に組み合わされている可動板ばね１、可動接触子２、可接支え４および押しばね６が可動鉄心９と連動して固定鉄心１０に向かって移動する。可動鉄心９が初期開極位置から距離Ｌ２分だけ固定鉄心１０に近づいた時点で可動接点３と固定接点７が接触し、接点閉路状態となる。さらに可動鉄心９が固定鉄心１０に吸引され、初期開極位置から可動鉄心９が固定鉄心１０の方向に距離Ｌ１分だけ移動し、可動鉄心９と固定鉄心１０が接触した際に、完全な接点閉路状態となる。 FIG. 7 is a cross-sectional view of the contact switch according to Embodiment 1 of the present invention when the contact is opened. The distance L1 between the contact surfaces of the movable iron core 9 and the fixed iron core 10 is longer than the distance L2 between the contact surfaces of the movable contact 3 and the fixed contact 7. The fixed iron core 10 is excited by a drive current that flows through an operation coil (not shown). When the movable iron core 9 is attracted to the excited fixed iron core 10, the crossbar 5 integrated with the movable iron core 9, the movable leaf spring 1 combined with the crossbar 5, and the movable contact 2 The connectable support 4 and the push spring 6 move toward the fixed iron core 10 in conjunction with the movable iron core 9. When the movable iron core 9 approaches the fixed iron core 10 by a distance L2 from the initial opening position, the movable contact 3 and the fixed contact 7 come into contact with each other, and the contact is closed. Further, when the movable iron core 9 is attracted to the fixed iron core 10 and the movable iron core 9 moves from the initial opening position in the direction of the fixed iron core 10 by the distance L1, the complete contact is made when the movable iron core 9 and the fixed iron core 10 come into contact with each other. The circuit is closed.

図８は、本発明の実施の形態１の接点開閉器の完全な接点閉路状態の断面図である。可動鉄心９が固定鉄心１０に吸引され、固定鉄心１０の方向に距離Ｌ２分だけ移動した時点で、可動接点３は固定接点７と接触し、それ以上固定鉄心１０方向へ移動しなくなる。可動鉄心９が距離Ｌ１分移動した際には、可動接触子２が、クロスバー５の上面５Ｂから、距離Ｌ１-Ｌ２分だけ離れた位置となる。この完全な接点閉路状態において、可動鉄心９に付与される吸引力は、押しばね６により調整された上で、可接支え４に付与され、さらに、可接支え４の交差部４Ｂより、可動板ばね１に対してばね圧Ｐ１が伝えられる。 FIG. 8 is a cross-sectional view of a complete contact closing state of the contact switch according to the first embodiment of the present invention. When the movable iron core 9 is attracted by the fixed iron core 10 and moved in the direction of the fixed iron core 10 by the distance L2, the movable contact 3 comes into contact with the fixed contact 7, and no longer moves in the direction of the fixed iron core 10. When the movable iron core 9 is moved by the distance L1, the movable contact 2 is positioned away from the upper surface 5B of the crossbar 5 by the distance L1-L2. In this complete contact closed state, the attractive force applied to the movable iron core 9 is adjusted by the push spring 6 and then applied to the contactable support 4, and is further movable from the intersection 4 B of the contactable support 4. A spring pressure P 1 is transmitted to the leaf spring 1.

　ばね圧Ｐ１が可動板ばね１の中央付近に与えられた際、可動板ばね１の押圧部１Ｂの接触部を介し、可動接触子２の可動接点３の裏面側に、それぞれ接点接触圧力Ｐ２およびＰ３が付与される。このとき、可動接触子２に対し、可動板ばね１の押圧部１Ｂから、可動接点３の裏面側に付与される圧力Ｐ２とおよびＰ３と、固定接点７から、可動接点３を介して付与される接点接触圧力とが、与えられる。可接支え４の交差部４Ｂからのばね圧Ｐ１は、可動板ばね１の中央付近に与えられるものの、可動板ばね１を介することにより、可動接触子２が、圧力Ｐ２とおよびＰ３を受ける位置と、固定接点７から付与される反力を受ける位置が一致する。これにより接触圧力による可動接触子２への内部応力を削減し、可動接触子２が反り接点圧力が減少する変形を抑制している。 When the spring pressure P1 is applied in the vicinity of the center of the movable plate spring 1, the contact contact pressure P2 and the contact point pressure P2 are respectively applied to the back side of the movable contact 3 of the movable contact 2 through the contact portion of the pressing portion 1B of the movable plate spring 1. P3 is given. At this time, the pressure P2 and P3 applied to the movable contact 2 from the pressing portion 1B of the movable leaf spring 1 to the back surface side of the movable contact 3 and the fixed contact 7 are applied via the movable contact 3. Contact pressure is provided. Although the spring pressure P1 from the intersecting portion 4B of the contactable support 4 is applied near the center of the movable plate spring 1, the movable contact 2 receives the pressures P2 and P3 through the movable plate spring 1. And the position where the reaction force applied from the fixed contact 7 is received coincides. Thereby, the internal stress to the movable contact 2 due to the contact pressure is reduced, and the movable contact 2 is restrained from being deformed by warping and reducing the contact pressure.

しかしながら、可動板ばね１と可動接触子２の位置ズレが大きくなると、可動板ばね１の押圧部１Ｂより圧力Ｐ２およびＰ３を受ける位置と、固定接点７からの反力が付与される可動接点３の位置とのズレが大きくなり、可動板ばね１による可動接触子２の変形防止効果が薄れてしまい、接触抵抗にバラつきが生じやすくなる。実施の形態１の接点開閉器においては、図４に示されるように、可動板ばね１の中央Ｌ字形状の係合部１Ａが、可動接触子２の切欠き部２Ａに嵌め合わされていることにより、可動板ばね１と可動接触子２の位置ズレが抑制される。これにより、安定した接点圧力の供給が可能となり、接点間の接触抵抗の安定により通電部の接点間における異常発熱を抑制し、接点の異常消耗を抑える効果を奏する。 However, when the displacement between the movable leaf spring 1 and the movable contact 2 increases, the movable contact 3 to which the pressure P2 and P3 are received from the pressing portion 1B of the movable leaf spring 1 and the reaction force from the fixed contact 7 is applied. The displacement of the movable contact spring 2 from the movable leaf spring 1 is less effective in preventing the deformation of the movable contact 2 and the contact resistance tends to vary. In the contact switch according to the first embodiment, as shown in FIG. 4, the center L-shaped engagement portion 1 A of the movable leaf spring 1 is fitted into the notch portion 2 A of the movable contact 2. Thus, the positional deviation between the movable leaf spring 1 and the movable contact 2 is suppressed. As a result, stable contact pressure can be supplied, and abnormal heat generation between the contacts of the current-carrying part can be suppressed by stabilizing the contact resistance between the contacts, thereby suppressing the abnormal consumption of the contacts.

　また、実施の形態１の接点開閉器においては、可動板ばね１のＬ字状の曲げ部１Ｃと、可接支え４の係合により、可接支え４に対する可動板ばね１の位置ずれを抑制することが可能であり、固定接点７と可動接点３の接触部が安定し、異常発熱を抑制し、接点の異常消耗を抑える効果を奏する。 Further, in the contact switch according to the first embodiment, the displacement of the movable leaf spring 1 with respect to the movable support 4 is suppressed by the engagement of the L-shaped bent portion 1C of the movable leaf spring 1 and the movable support 4. The contact part of the fixed contact 7 and the movable contact 3 is stabilized, and an effect of suppressing abnormal heat generation and suppressing abnormal consumption of the contact is obtained.

実施の形態２．
　本発明の実施の形態２の接点開閉器の可動板ばね１、可動接触子２、可接支え４の構成について、説明する。なお、実施の形態２の接点開閉器の他の構成に関しては、実施の形態１と同様の構成とできるため、説明は割愛する。実施の形態２の接点開閉器を説明するために、Ｘ方向、Ｙ方向およびＺ方向を、それぞれ、図９、図１０に図示するように、互いに直交する方向として定義する。Ｘ方向は、一対の可動接点３や一対の固定接点７が並ぶ方向である。Ｚ方向は、可動接点が移動する方向である。Ｚ方向正側を上、負側を下と表現する場合もある。 Embodiment 2. FIG.
The configuration of the movable leaf spring 1, the movable contact 2, and the contactable support 4 of the contact switch according to the second embodiment of the present invention will be described. In addition, about the other structure of the contact switch of Embodiment 2, since it can be set as the structure similar to Embodiment 1, description is omitted. In order to describe the contact switch according to the second embodiment, the X direction, the Y direction, and the Z direction are defined as directions orthogonal to each other as illustrated in FIGS. The X direction is a direction in which the pair of movable contacts 3 and the pair of fixed contacts 7 are arranged. The Z direction is the direction in which the movable contact moves. The Z direction positive side may be expressed as up, and the negative side may be expressed as down.

図９は、本発明の実施の形態２の接点開閉器の可動板ばね１と可動接触子２との係合状態を表す斜視図である。可動板ばね１はＸ方向中央部のＹ方向両側に設けられたＺ方向負側に延びるＬ字形状の係合部１Ａと、Ｘ方向両端に設けられた押圧部１Ｂと、Ｘ方向中央部とＸ方向両端部との間のＹ方向側に設けられたＺ方向正側に延びるＬ字形状の曲げ部１Ｃと、を有している。 FIG. 9 is a perspective view showing an engaged state between the movable leaf spring 1 and the movable contact 2 of the contact switch according to the second embodiment of the present invention. The movable leaf spring 1 includes an L-shaped engaging portion 1A extending on the negative side in the Z direction provided on both sides in the Y direction of the X direction central portion, a pressing portion 1B provided on both ends in the X direction, and a central portion in the X direction. And an L-shaped bent portion 1 C extending on the positive side in the Z direction and provided on the Y direction side between both ends in the X direction.

可動接触子２のＸ方向両端付近の下面には、可動接点３が接合されている。可動板ばね１の押圧部１Ｂは、可動接触子２の上面と、可動接点３と対応する位置において、接触している箇所である。また、可動板ばね１の中央Ｌ字形状の係合部１Ａが可動接触子２の切欠き部２Ａと嵌め合わせることにより、可動板ばね１と可動接触子２が位置決めされる。この位置決め構造により、可動板ばね１の押圧部１Ｂと可動接触子２の接触部がＸ方向に変動することを抑制する。 The movable contact 3 is joined to the lower surface of the movable contact 2 near both ends in the X direction. The pressing portion 1 B of the movable leaf spring 1 is a place in contact with the upper surface of the movable contact 2 at a position corresponding to the movable contact 3. Also, the movable leaf spring 1 and the movable contact 2 are positioned by engaging the center L-shaped engaging portion 1 A of the movable leaf spring 1 with the notch 2 A of the movable contact 2. With this positioning structure, the pressing portion 1B of the movable leaf spring 1 and the contact portion of the movable contact 2 are prevented from changing in the X direction.

図１０は、本発明の実施の形態２の接点開閉器の可動板ばね１と可動接触子２と可接支え４との係合状態を表す斜視図である。Ｌ字状の曲げ部１Ｃと可接支え４のＵ字状の立設部４Ｃとの係合により、可動板ばね１が可接支え４により位置決めされる。これにより、可接支え４に対する可動板ばね１のＸ方向の位置ずれを低減することが可能である。また、Ｌ字状の曲げ部１Ｃが可接支え４のＵ字状の立設部４Ｃに当接することにより、可接支え４に対する可動板ばね１のＸ－Ｚ方向回転方向のズレやガタツキも抑制することが可能である。これにより、実施の形態１と同様に、安定した接点圧力の供給が可能となり、接点間の接触抵抗の安定により通電部の接点間における発熱量が安定し、過度な製品発熱を抑制する効果を奏する。 FIG. 10 is a perspective view showing an engaged state of the movable leaf spring 1, the movable contact 2, and the connectable support 4 of the contact switch according to the second embodiment of the present invention. The movable leaf spring 1 is positioned by the contactable support 4 by the engagement between the L-shaped bent portion 1 C and the U-shaped standing portion 4 C of the contactable support 4. Thereby, it is possible to reduce the displacement of the movable leaf spring 1 in the X direction with respect to the contactable support 4. Further, since the L-shaped bent portion 1C abuts on the U-shaped standing portion 4C of the connectable support 4, the movable plate spring 1 is displaced from the connectable support 4 in the XZ direction in the rotation direction and rattling. It is possible to suppress. As in the first embodiment, this makes it possible to supply a stable contact pressure, stabilize the contact resistance between the contacts, stabilize the amount of heat generated between the contacts of the current-carrying part, and suppress excessive product heat generation. Play.

本発明は、本発明の広義の精神と範囲を逸脱することなく、様々な実施の形態及び変形が可能とされるものである。例えば、実施の形態１、２の変形例として、接点開閉器の可動板ばね１は、図１１の斜視図に示されるように、実施の形態１、２におけるＬ字状の曲げ部１Ｃを備えない形態とすること可能である。この場合、可接支え４に対し、可動板ばね１および可動接触子２の少なくともいずれか一方を位置決めする機構を別途設けることが必要となるが、可動板ばね１の中央Ｌ字形状の係合部１Ａが、可動接触子２の切欠き部２Ａに嵌め合わされていることにより、可動板ばね１と可動接触子２の位置ズレを抑制することができる。これにより、安定した接点圧力の供給が可能となり、接点間の接触抵抗の安定により通電部の接点間における異常発熱を抑制し、接点の異常消耗を抑える効果を奏する。 The present invention is capable of various embodiments and modifications without departing from the broad spirit and scope of the present invention. For example, as a modification of the first and second embodiments, the movable leaf spring 1 of the contact switch includes an L-shaped bent portion 1C in the first and second embodiments as shown in the perspective view of FIG. It is possible to have no form. In this case, it is necessary to separately provide a mechanism for positioning at least one of the movable plate spring 1 and the movable contact 2 with respect to the contactable support 4. Since the portion 1 A is fitted into the notch portion 2 A of the movable contact 2, the positional deviation between the movable leaf spring 1 and the movable contact 2 can be suppressed. As a result, stable contact pressure can be supplied, and abnormal heat generation between the contacts of the current-carrying part can be suppressed by stabilizing the contact resistance between the contacts, thereby suppressing the abnormal consumption of the contacts.

　また、上述した実施の形態は、本発明を説明するためのものであり、本発明の範囲を限定するものではない。つまり、本発明の範囲は、実施の形態ではなく、請求の範囲によって示される。そして、請求の範囲内及びそれと同等の発明の意義の範囲内で施される様々な変形が、本発明の範囲内とみなされる。 Further, the above-described embodiments are for explaining the present invention, and do not limit the scope of the present invention. In other words, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

　１　可動板ばね、１Ａ　係合部、１Ｂ　押圧部、１Ｃ　曲げ部、２　可動接触子、２Ａ　切欠き部、３　可動接点、４　可接支え、４Ａ　ばね受け部、４Ｂ　交差部、４Ｃ　立設部、５　クロスバー、５Ａ　ばね受け部、５Ｂ　上面、６　押しばね、７　固定接点、８　固定接触子、９　可動鉄心、１０　固定鉄心。 1 Movable leaf spring, 1A engaging part, 1B pressing part, 1C bending part, 2 movable contactor, 2A notch part, 3 movable contact point, 4 contactable support, 4A spring receiving part, 4B crossing part, 4C standing part 5 crossbar, 5A spring receiving portion, 5B top surface, 6 push spring, 7 fixed contact, 8 fixed contact, 9 movable iron core, 10 fixed iron core.

Claims

　固定鉄心と、
　一対の固定接点を備える固定接触子と、
　前記固定鉄心に対応して配置され、前記固定鉄心に駆動される可動鉄心と、
　前記固定接点と対向して設けられる一対の可動接点を下面側に備える可動接触子と、
　前記可動接触子における前記可動接点が設けられる位置の裏面側に当接する押圧部を備える可動板ばねと、
　可動板ばねの中央部に当接するように配置され、前記可動鉄心の駆動力を可動板ばねに伝える可接支えと、
を備え、
　前記可動接触子は、前記可動接触子の長手方向中央部の両側面に、上下方向に延びる溝状の切欠き部を備え、
　前記可動板ばねは、前記切欠き部に係合する係合部を備える、接点開閉器。 A fixed iron core,
A stationary contact comprising a pair of stationary contacts;
A movable iron core disposed corresponding to the fixed iron core and driven by the fixed iron core;
A movable contact provided on the lower surface side with a pair of movable contacts provided to face the fixed contact;
A movable leaf spring provided with a pressing portion that comes into contact with the back side of the position where the movable contact is provided in the movable contact;
A contact support that is arranged to contact the center of the movable leaf spring and transmits the driving force of the movable iron core to the movable leaf spring;
With
The movable contact includes a groove-shaped notch extending in the vertical direction on both side surfaces of the longitudinal center of the movable contact,
The said movable leaf | plate spring is a contact switch provided with the engaging part engaged with the said notch part.
　前記可動板ばねは、上方に延びて形成され、前記可接支えに係合する折り曲げ部を備える、請求項１に記載の接点開閉器。 2. The contact switch according to claim 1, wherein the movable leaf spring includes a bent portion that extends upward and engages the contactable support.
　前記可接支えは、上方に延びて形成される立設部を備え、前記折り曲げ部に前記立設部が嵌め合わされている、請求項２に記載の接点開閉器。 3. The contact switch according to claim 2, wherein the contactable support includes a standing portion that extends upward, and the standing portion is fitted to the bent portion.
　前記固定鉄心と一体に形成された樹脂製のクロスバーと、
　前記クロスバーに収容され、前記可動鉄心の駆動力を前記可動支えに伝える押しばねをさらに備える、請求項１乃至３のいずれかに記載の接点開閉器。 A resin cross bar formed integrally with the fixed iron core;
4. The contact switch according to claim 1, further comprising a push spring housed in the cross bar and transmitting a driving force of the movable iron core to the movable support. 5.