JP2010108661A - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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JP2010108661A
JP2010108661A JP2008277434A JP2008277434A JP2010108661A JP 2010108661 A JP2010108661 A JP 2010108661A JP 2008277434 A JP2008277434 A JP 2008277434A JP 2008277434 A JP2008277434 A JP 2008277434A JP 2010108661 A JP2010108661 A JP 2010108661A
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contact
case
coil
terminal
block
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JP4826619B2 (en
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Kazuhiko Horii
和彦 堀井
Junichi Watanabe
純一 渡邉
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic relay which can suppress occurrence of dew condensation and freezing on a contact part to prevent the defective continuity of the contact part, considering an installation condition with a terminal inserted into a socket. <P>SOLUTION: The electromagnetic relay includes: an electromagnet block 2 having an iron core 23 around which a coil 21 is wound, and a yoke 24 forming a magnetic circuit with the iron core 23; a contact block 4 having fixed contacts 41 and 46 and a movable contact 43 so formed as to make contact with and separate from the fixed contacts 41 and 46 according to power-on and power-off to the coil 21; and a case 1 housing the electromagnet block 2 and the contact block 4 therein. In the electromagnetic relay, a coil terminal 25 which is connected to the coil 21 of the electromagnet block 2, a fixed contact terminal 42 and a movable contact terminal 45 which are connected to the fixed contact 41 and the movable contact 43 of the contact block 4, respectively, protrude from one surface of the case 1, and in the other surface facing the one surface, a metallic plate 5 exposed in the spaces of the outside and inside of the case 1 is provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、電磁継電器に関するものである。   The present invention relates to an electromagnetic relay.

従来よりこの種の電磁継電器として、コイルが巻回される鉄心及び鉄心と共に磁気回路を形成する継鉄を備えた電磁石ブロックと、固定接点及びコイルへの通電の入・切に応じて固定接点に接離自在に構成される可動接点を備えた接点ブロックと、電磁石ブロック及び接点ブロックを内部に収納する略矩形箱型のケースとを備え、前記ケースの底面より、電磁石ブロックのコイルに接続されるコイル端子と、接点ブロックの固定接点、可動接点に各々接続される固定接点端子、可動接点端子とが突出したものが提供されている。そして、上記電磁継電器では、コイルの発熱によって温められたコイル周辺の空気が、ケース内において他の部分よりも温度の低い可動接点と固定接点とからなる接点部に到達することで、接点部に結露が発生し、接点部の温度が更に下がった場合に結露が氷結して導通不具合が発生する虞があった。   Conventionally, this type of electromagnetic relay includes an iron block around which a coil is wound and an electromagnetic block having a yoke that forms a magnetic circuit with the iron core, and a fixed contact and a fixed contact according to whether the coil is energized. A contact block having a movable contact configured to be freely contactable and separable; and an approximately rectangular box-shaped case that houses the electromagnet block and the contact block therein, and is connected to the coil of the electromagnet block from the bottom surface of the case A coil terminal, a fixed contact terminal of a contact block, a fixed contact terminal connected to the movable contact, and a movable contact terminal are provided. In the electromagnetic relay, the air around the coil warmed by the heat generated by the coil reaches the contact portion composed of the movable contact and the fixed contact having a temperature lower than that of the other portion in the case. When condensation occurs and the temperature of the contact point further decreases, there is a risk that condensation will freeze and conduction problems may occur.

そこで、ケースの底面または側面に熱伝導率の高い金属板を貫接し、当該金属板のケース内面側に結露を発生させることで、ケース内の空気に含まれる水分量を減少させ、接点部の結露及び氷結を防止しようとしているものがある（例えば特許文献１、２参照）。
特開２００３−０３１０９５号公報 特開昭６４−１９９０４号公報 Therefore, a metal plate with high thermal conductivity is penetrated to the bottom or side surface of the case, and condensation is generated on the case inner surface side of the metal plate, thereby reducing the amount of moisture contained in the air in the case, and Some attempt to prevent condensation and icing (for example, see Patent Documents 1 and 2).
JP 2003-031095 A Japanese Unexamined Patent Publication No. 64-19904

しかしながら、一般的に電磁継電器は、制御盤等の盤内に配置されたソケットに各端子が挿入されるものであるため、ケースの底面は、ソケットと当接すると共に盤の内面に近接するので、ケースの底面付近の空気はこもり易い。そのため、ケースの底面に設けられた金属板の放熱性能は低下して金属板の温度が下がり難くなる。従って、金属板に結露が発生せず、ケース内で温度の低い接点部に結露が発生する虞がある。   However, in general, an electromagnetic relay is such that each terminal is inserted into a socket arranged in a panel such as a control panel, so the bottom surface of the case is in contact with the socket and close to the inner surface of the panel. The air near the bottom of the case is likely to be trapped. Therefore, the heat dissipation performance of the metal plate provided on the bottom surface of the case is lowered, and the temperature of the metal plate is difficult to decrease. Therefore, no condensation occurs on the metal plate, and there is a possibility that condensation occurs at the contact portion having a low temperature in the case.

また、一般に盤内においてソケットは並設されており、当該ソケットに各端子を挿し込むことで電磁継電器は盤内に並設される。これにより、ケースの側面同士や、電磁継電器以外の盤内に配置されている他の機器とケースの側面とは近接するため、ケースの側面付近の空気はこもり易い。そのため、金属板の放熱性能は低下して金属板の温度が下がり難くなる。従って、金属板に結露が発生せず、ケース内で温度の低い接点部に結露が発生する虞がある。   In general, sockets are arranged side by side in the board, and electromagnetic relays are arranged in parallel in the board by inserting each terminal into the socket. Accordingly, the side surfaces of the case and the other devices arranged in the panel other than the electromagnetic relay are close to the side surface of the case, so that air in the vicinity of the side surface of the case is easily trapped. Therefore, the heat dissipation performance of the metal plate is lowered and the temperature of the metal plate is difficult to decrease. Therefore, no condensation occurs on the metal plate, and there is a possibility that condensation occurs at the contact portion having a low temperature in the case.

このように、ケースの底面または側面に熱伝導率の高い金属板を設けた従来の電磁継電器では、ソケットに端子を挿入した状態での設置状態が考慮されていないので、金属板の放熱性能が低下して金属板の温度が接点部の温度よりも下がらず、接点部に結露が発生し、接点部の温度が更に低下した場合には、結露が氷結することで導通不具合が発生する虞がある。   Thus, in the conventional electromagnetic relay provided with a metal plate with high thermal conductivity on the bottom or side of the case, the installation state with the terminal inserted into the socket is not considered, so the heat dissipation performance of the metal plate is If the temperature of the metal plate does not fall below the temperature of the contact part and condensation occurs at the contact part, and the temperature of the contact part further decreases, there is a risk that conduction failure may occur due to icing of the condensation. is there.

本発明は、上記事由に鑑みてなされたものであり、その目的は、ソケットに端子を挿入した状態での設置状態を考慮して、接点部に結露及び氷結が発生することを抑制し、接点部の導通不具合を防止できる電磁継電器を提供することにある。   The present invention has been made in view of the above reasons, and its purpose is to suppress the occurrence of condensation and icing on the contact portion in consideration of the installation state in which the terminal is inserted into the socket, and the contact It is providing the electromagnetic relay which can prevent the conduction defect of a part.

請求項１の発明は、コイルが巻回される鉄心と、鉄心と共に磁気回路を形成する継鉄とを備えた電磁石ブロックと、固定接点と、コイルへの通電の入り切りに応じて固定接点に接離自在に構成される可動接点とを備えた接点ブロックと、内部に電磁石ブロック及び接点ブロックを収納するケースとを備え、前記ケースの一面より、電磁石ブロックのコイルに接続されるコイル端子と、接点ブロックの固定接点、可動接点に各々接続される固定接点端子、可動接点端子とが突出し、当該一面に対向する他面には、ケース外の空間及びケース内の空間に露出する金属板が設けられることを特徴とする
この発明によれば、ソケットに端子を挿入した状態での設置状態が考慮され、複数並設された場合であっても金属板を設けたケースの他面（天面）の周囲には空気の流れを妨げる遮蔽物がないので金属板の放熱性能を維持することができ、金属板の温度が接点部の温度よりも低くなりコイルによって温められたケース内の空気に含まれる水分が金属板のケース内面側に結露することで、ケース内の空気に含まれる水分量が減少し接点部に結露及び氷結が発生することが抑制され、接点部の導通不具合を防止することができる。 According to the first aspect of the present invention, there is provided an electromagnetic block including an iron core around which a coil is wound, a yoke that forms a magnetic circuit together with the iron core, a fixed contact, and a fixed contact according to whether the coil is energized. A contact block having a movable contact configured to be separable, and a case housing the electromagnet block and the contact block inside, a coil terminal connected to the coil of the electromagnet block from one surface of the case, and a contact The fixed contact of the block, the fixed contact terminal connected to the movable contact, and the movable contact terminal protrude, and the other surface facing the one surface is provided with a metal plate exposed to the space outside the case and the space inside the case. According to the present invention, the installation state with the terminal inserted into the socket is taken into consideration, and even if a plurality of the terminals are arranged in parallel, the other surface (top surface) of the case provided with the metal plate Since there is no shield that blocks the air flow around it, the heat dissipation performance of the metal plate can be maintained, and the temperature of the metal plate is lower than the temperature of the contact part and is included in the air in the case heated by the coil Moisture is condensed on the inner surface of the case of the metal plate, so that the amount of moisture contained in the air in the case is reduced and condensation and icing are prevented from occurring at the contact part, thus preventing conduction problems at the contact part. Can do.

請求項２の発明は、請求項１の発明において、前記金属板は、ケースの他面において、可動接点と固定接点とからなる接点部に対向する位置に設けられることを特徴とする。   According to a second aspect of the present invention, in the first aspect of the present invention, the metal plate is provided on the other surface of the case at a position facing a contact portion composed of a movable contact and a fixed contact.

この発明によれば、ケースの天面において、接点部から最短距離となる位置に金属板が設けられることで、接点部周辺の空気に含まれる水分がより多く金属板に結露し、接点部に結露及び氷結が発生することが更に抑制され、接点部の導通不具合の防止効果を高めることができる。   According to this invention, on the top surface of the case, the metal plate is provided at a position that is the shortest distance from the contact portion, so that more moisture contained in the air around the contact portion is condensed on the metal plate, Generation | occurrence | production of dew condensation and icing is further suppressed, and the prevention effect of the conduction | electrical_connection defect of a contact part can be heightened.

以上説明したように、本発明では、ソケットに端子を挿入した状態での設置状態を考慮して、接点部に結露及び氷結が発生することを抑制し、接点部の導通不具合を防止できるという効果がある。   As described above, in the present invention, in consideration of the installation state in a state in which the terminal is inserted into the socket, it is possible to suppress the occurrence of condensation and icing on the contact portion, and to prevent the conduction failure of the contact portion. There is.

以下、本発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施形態）
本実施形態における電磁継電器は、図１〜３に示すように、樹脂等の絶縁性材料から箱型に形成されたケース１内部に電磁石ブロック２と、接極子３と、接点ブロック４とを収納している。以下、図１における上下左右を基準とし、上下左右方向と直交する方向を前後方向とする。 (Embodiment)
As shown in FIGS. 1 to 3, the electromagnetic relay in this embodiment houses an electromagnet block 2, an armature 3, and a contact block 4 inside a case 1 formed in a box shape from an insulating material such as resin. is doing. In the following, the direction perpendicular to the up / down / left / right direction is defined as the front / rear direction with reference to the up / down / left / right direction in FIG.

電磁石ブロック２は、コイル２１が巻回される中空円筒状のコイルボビン２２と、コイルボビン２２の内径部２２ａを挿通する鉄心２３と、鉄心２３と共に磁気回路を形成する継鉄２４とを備える。   The electromagnet block 2 includes a hollow cylindrical coil bobbin 22 around which the coil 21 is wound, an iron core 23 inserted through the inner diameter portion 22 a of the coil bobbin 22, and a yoke 24 that forms a magnetic circuit together with the iron core 23.

コイルボビン２２は、樹脂等の絶縁材料から形成され、軸方向の上下両端に鍔部２２ｂ、２２ｃが形成され、鍔部２２ｂと鍔部２２ｃとの間にコイル２１が巻回される。   The coil bobbin 22 is made of an insulating material such as a resin, and the flange portions 22b and 22c are formed at both upper and lower ends in the axial direction, and the coil 21 is wound between the flange portion 22b and the flange portion 22c.

鉄心２３は、長尺円柱状に形成されて下端に鍔部２３ａが形成され、コイルボビン２２の鍔部２２ｃの略中央に形成される円形の凹部２２ｄに、鍔部２３ａが嵌め込まれる。   The iron core 23 is formed in a long cylindrical shape, and a flange portion 23a is formed at the lower end. The flange portion 23a is fitted into a circular recess 22d formed at the approximate center of the flange portion 22c of the coil bobbin 22.

継鉄２４は、磁性材料により、一方片２４ａと、一方片２４ａの右端より下方へ延設された他方片２４ｂとから略Ｌ字状に形成されている。そして、一方片２４ａは、コイルボビン２２の鍔部２２ｂに形成される凹部２２ｅに嵌合されると共に挿通孔２４ｃが形成され、当該挿通孔２４ｃに鉄心２３の上端部が挿通する。また、他方片２４ｂは、コイルボビン２２の右端に沿って形成されている。   The yoke 24 is made of a magnetic material and is substantially L-shaped from one piece 24a and the other piece 24b extending downward from the right end of the one piece 24a. The one piece 24a is fitted into a recess 22e formed in the flange portion 22b of the coil bobbin 22, and an insertion hole 24c is formed. The upper end portion of the iron core 23 is inserted into the insertion hole 24c. The other piece 24 b is formed along the right end of the coil bobbin 22.

接極子３は、磁性材料から長尺平板状に形成され、鉄心２３の鍔部２３ａに対向して配設される。   The armature 3 is formed of a magnetic material into a long flat plate shape, and is disposed to face the flange portion 23 a of the iron core 23.

接点ブロック４は、固定接点４１、４６と、コイル２１への通電の入り切りに応じて固定接点４１、４６に接離自在に構成される可動接点４３と、当該可動接点４３が設けられる可動接点板４４とを備え、固定接点４１、４６は固定接点端子４２、４７に各々接続され、可動接点４３は可動接点板４４を介して可動接点端子４５に接続される。   The contact block 4 includes fixed contacts 41 and 46, a movable contact 43 configured to be able to come into and out of contact with the fixed contacts 41 and 46 according to whether the coil 21 is energized, and a movable contact plate on which the movable contact 43 is provided. 44, the fixed contacts 41 and 46 are connected to the fixed contact terminals 42 and 47, respectively, and the movable contact 43 is connected to the movable contact terminal 45 via the movable contact plate 44.

固定接点端子４２は、上下方向に長い長尺平板状の端子部４２ａと、端子部４２ａの上端から左方向へ延設された延設部４２ｂとで、銅等の導電性材料により略Ｌ字状に形成されており、延設部４２ｂの先端近傍には固定接点４１が設けられている。   The fixed contact terminal 42 includes a long flat plate-like terminal portion 42a that is long in the vertical direction and an extending portion 42b that extends leftward from the upper end of the terminal portion 42a, and is substantially L-shaped by a conductive material such as copper. The fixed contact 41 is provided in the vicinity of the tip of the extended portion 42b.

固定接点端子４７は、左右方向に長い長尺平板状の端子部で、銅等の導電性材料により形成されており、前記固定接点４１と上下方向に対向する位置に固定接点４６が設けられている。   The fixed contact terminal 47 is a long flat plate-like terminal portion that is long in the left-right direction, and is formed of a conductive material such as copper. A fixed contact 46 is provided at a position facing the fixed contact 41 in the vertical direction. Yes.

可動接点板４４は、左右方向に長い板ばね状の作動片４４ａと、作動片４４ａの右端から上方へ延設された固定片４４ｂとで、銅等の導電性材料により略Ｌ字状に形成されている。そして、作動片４４ａの右側上面に前記接極子３が固定され、先端近傍には前記固定接点４１、４６と対向する位置に可動接点４３が設けられる。なお、本実施形態の電磁継電器では、コイル２１に電流が流れていない場合には可動接点４３は固定接点４６と当接し、コイル２１に電流が流れている場合には可動接点４３は固定接点４１と当接する、所謂ｃ接点の接点構造を有している。また、固定片４４ｂは、継鉄２４の他方片２４ｂと可動接点端子４５との間に設けられ、可動接点端子４５の上端側に、かしめ等によって固定される。   The movable contact plate 44 is formed in a substantially L shape with a conductive material such as copper, with a plate spring-like operating piece 44a that is long in the left-right direction and a fixed piece 44b that extends upward from the right end of the operating piece 44a. Has been. The armature 3 is fixed to the upper right side of the operating piece 44a, and a movable contact 43 is provided near the tip at a position facing the fixed contacts 41 and 46. In the electromagnetic relay of the present embodiment, the movable contact 43 contacts the fixed contact 46 when no current flows through the coil 21, and the movable contact 43 contacts the fixed contact 41 when current flows through the coil 21. A contact structure of a so-called c contact. The fixed piece 44b is provided between the other piece 24b of the yoke 24 and the movable contact terminal 45, and is fixed to the upper end side of the movable contact terminal 45 by caulking or the like.

可動接点端子４５は、銅等の導電性材料により上下方向に長い長尺板状に形成される。   The movable contact terminal 45 is formed in a long plate shape that is long in the vertical direction by a conductive material such as copper.

ケース１は、略矩形平板状のベース１１と、下面が開口してベース１１に覆設する略矩形箱型のカバー１２とから構成され、ベース１１には、固定接点端子４２の端子部４２ａと、可動接点端子４５と、コイル２１の先端がそれぞれ接続される一対のコイル端子２５とがそれぞれ挿通する図示しない挿通孔が穿設されている。コイル端子２５は、銅等の導電性材料により上下方向に長い長尺板状に形成され、その上端にコイル２１の先端が巻回されて半田等によって接続されている。   The case 1 includes a substantially rectangular flat base 11 and a substantially rectangular box-shaped cover 12 whose bottom surface is open and covers the base 11. The base 11 includes a terminal portion 42 a of a fixed contact terminal 42 and a terminal portion 42 a. Further, insertion holes (not shown) through which the movable contact terminal 45 and the pair of coil terminals 25 to which the tips of the coils 21 are respectively connected are inserted. The coil terminal 25 is formed in a long plate shape that is long in the vertical direction by a conductive material such as copper, and the tip of the coil 21 is wound around the upper end of the coil terminal 25 and connected by solder or the like.

そして、ベース１１と対向する、カバー１２の天面１２ａには、固定接点４１及び可動接点４３からなる接点部４０と上下方向に対向する位置に、金属板５が同時成型によって設けられている。金属板５は、熱伝導率の高いアルミや銅等によって形成され、上面がケース１の外側の空間に露出し、下面がケース１の内側の空間に露出した状態で設けられる。そのため、金属板５は、上面が外気によって冷却されることで低温となり、下面がケース１内において低温部となる。また、図２に示すように、金属板５の前後方向両端付近には、樹脂材料からなるカバー１２と同時成型する際に、位置決め固定のために用いられる挿通孔５ａがそれぞれ穿設されている。   A metal plate 5 is provided on the top surface 12a of the cover 12 facing the base 11 at a position facing the contact portion 40 including the fixed contact 41 and the movable contact 43 in the vertical direction by simultaneous molding. The metal plate 5 is formed of aluminum, copper, or the like having high thermal conductivity, and is provided in a state where the upper surface is exposed in the space outside the case 1 and the lower surface is exposed in the space inside the case 1. Therefore, the upper surface of the metal plate 5 is cooled by the outside air, so that the lower temperature becomes a low temperature part in the case 1. Further, as shown in FIG. 2, insertion holes 5a used for positioning and fixing are formed in the vicinity of both ends in the front-rear direction of the metal plate 5 when the metal plate 5 is simultaneously molded with the cover 12 made of a resin material. .

また、一般に電磁継電器は、図示しない制御盤等の盤内に設けられたソケットに各端子（一対のコイル端子２５及び固定接点端子４２及び可動接点端子４５）が挿入されるため、ケース１の底面はソケットと当接すると共に盤の内面と近接し、ケース１の底面付近の空気はこもり易い。更に、一般に盤内においてソケットは並設されているため、ソケットに端子部が挿し込まれた電磁継電器は並設され、ケース１の側面同士や、電磁継電器以外の盤内に配置されている機器とケース１の側面とは近接し、ケース１の側面付近の空気も、こもり易くなっている。   In general, an electromagnetic relay is configured such that each terminal (a pair of coil terminals 25, a fixed contact terminal 42, and a movable contact terminal 45) is inserted into a socket provided in a panel such as a control panel (not shown). Is in contact with the socket and close to the inner surface of the board, and air near the bottom surface of the case 1 tends to be trapped. Furthermore, generally, since the sockets are arranged in parallel in the panel, the electromagnetic relays in which the terminal portions are inserted into the sockets are arranged in parallel, and the devices arranged on the sides of the case 1 or in the panel other than the electromagnetic relays. And the side surface of the case 1 are close to each other, and air near the side surface of the case 1 is also easily trapped.

上記構成から成る本実施形態の電磁継電器において、コイル２１への通電時には、鉄心２３が磁化されることによって鉄心２３の鍔部２３ａに接極子３が吸引されて当設し、それに伴って接極子３と接続された可動接点板４４の作動片４４ａの先端が上方へ変位し、先端に設けられた可動接点４３が固定接点４１に当接し、固定接点端子４２と可動接点端子４５との間が導通する。   In the electromagnetic relay of the present embodiment having the above-described configuration, when the coil 21 is energized, the armature 23 is magnetized so that the armature 3 is attracted to the flange 23a of the iron core 23, and the armature is accordingly provided. 3, the distal end of the operating piece 44 a of the movable contact plate 44 connected to 3 is displaced upward, the movable contact 43 provided at the distal end contacts the fixed contact 41, and the space between the fixed contact terminal 42 and the movable contact terminal 45 is between Conduct.

そして、コイル２１の通電時には、コイル２１の発熱によってコイル２１近傍の空気が高温となり、当該高温となった空気が、外気に触れることでケース１内の接点部４０よりも低温部となっている前記金属板５に到達することで、金属板５に結露が発生する。これにより、ケース１内の空気に含まれる水分量を減少させ、接点部４０に結露が発生することを防止することができる。また、電磁継電器が、盤内のソケットに各端子が挿入されて並設された場合に、金属板５が設けられている天面１２ａは上方に露出し、その周囲には空気の流れを妨げる遮蔽物がないので放熱性能を維持することができ、金属板５は低温に保たれる。更に、金属板５は、カバー１２の天面１２ａにおいて、接点部４０から最短距離となる位置に設けられているため、接点部４０周辺の空気に含まれる水分がより多く金属板５に結露することで、接点部４０付近の空気に含まれる水分量が減少し、接点部４０に結露が発生することをより抑えることができる。   When the coil 21 is energized, the air in the vicinity of the coil 21 becomes hot due to the heat generated by the coil 21, and the hot air becomes a lower temperature part than the contact part 40 in the case 1 by touching the outside air. By reaching the metal plate 5, condensation occurs on the metal plate 5. As a result, the amount of moisture contained in the air in the case 1 can be reduced, and the occurrence of condensation on the contact portion 40 can be prevented. Further, when the electromagnetic relay is installed in parallel with each terminal being inserted into the socket in the panel, the top surface 12a on which the metal plate 5 is provided is exposed upward, and the air flow is obstructed around the top surface 12a. Since there is no shield, the heat dissipation performance can be maintained, and the metal plate 5 is kept at a low temperature. Furthermore, since the metal plate 5 is provided on the top surface 12a of the cover 12 at a position that is the shortest distance from the contact portion 40, more moisture contained in the air around the contact portion 40 is condensed on the metal plate 5. As a result, the amount of moisture contained in the air in the vicinity of the contact portion 40 is reduced, and the occurrence of condensation on the contact portion 40 can be further suppressed.

このように、本実施形態における電磁継電器では、ソケットに端子を挿入した状態での設置状態を考慮して金属板５の配設箇所を決めているので、接点部４０に発生する結露及び氷結が効果的に抑制され、接点部の導通不具合を防止することができる。   As described above, in the electromagnetic relay according to the present embodiment, the arrangement location of the metal plate 5 is determined in consideration of the installation state in the state where the terminal is inserted into the socket. It is suppressed effectively and the conduction | electrical_connection defect of a contact part can be prevented.

本発明の実施形態における電磁継電器のＡ−Ａ断面の概略図を示す。The schematic of the AA cross section of the electromagnetic relay in embodiment of this invention is shown. 同上における電磁継電器の上面図を示す。The top view of the electromagnetic relay in the same as the above is shown. （ａ）、（ｂ）は、同上における電磁継電器の断面概略図を示し、（ａ）は、Ｂ−Ｂ断面、（ｂ）は、Ｃ−Ｃ断面を示す。(A), (b) shows the cross-sectional schematic of the electromagnetic relay in the same as the above, (a) shows a BB cross section, (b) shows a CC cross section.

符号の説明Explanation of symbols

１ ケース
２ 電磁石ブロック
３ 接極子
４ 接点ブロック
５ 金属板
２１ コイル
２３ 鉄心
２４ 継鉄
２５ コイル端子
４１ 固定接点
４２ 固定接点端子
４３ 可動接点
４５ 可動接点端子
４６ 固定接点
４７ 固定接点端子 1 Case 2 Electromagnetic Block 3 Armature 4 Contact Block 5 Metal Plate 21 Coil 23 Iron Core 24 Relay 25 Coil Terminal 41 Fixed Contact 42 Fixed Contact Terminal 43 Movable Contact 45 Movable Contact Terminal 46 Fixed Contact 47 Fixed Contact Terminal

Claims (2)

コイルが巻回される鉄心と、鉄心と共に磁気回路を形成する継鉄とを備えた電磁石ブロックと、
固定接点と、コイルへの通電の入り切りに応じて固定接点に接離自在に構成される可動接点とを備えた接点ブロックと、
内部に電磁石ブロック及び接点ブロックを収納するケースとを備え、
前記ケースの一面より、電磁石ブロックのコイルに接続されるコイル端子と、接点ブロックの固定接点、可動接点に各々接続される固定接点端子、可動接点端子とが突出し、当該一面に対向する他面には、ケース外の空間及びケース内の空間に露出する金属板が設けられることを特徴とする電磁継電器。 An electromagnetic block comprising an iron core around which a coil is wound, and a yoke that forms a magnetic circuit with the iron core;
A contact block including a fixed contact and a movable contact configured to be freely connected to and separated from the fixed contact according to whether the coil is energized;
A case for accommodating an electromagnetic block and a contact block inside,
From one surface of the case, a coil terminal connected to the coil of the electromagnet block, a fixed contact of the contact block, a fixed contact terminal connected to the movable contact, and a movable contact terminal protrude from the other surface facing the one surface. Is provided with a metal plate exposed to a space outside the case and a space inside the case. 前記金属板は、ケースの他面において、可動接点と固定接点とからなる接点部に対向する位置に設けられることを特徴とする請求項１記載の電磁継電器。   2. The electromagnetic relay according to claim 1, wherein the metal plate is provided on the other surface of the case at a position facing a contact portion including a movable contact and a fixed contact.
JP2008277434A 2008-10-28 2008-10-28 Electromagnetic relay Active JP4826619B2 (en)

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