JP2014053078A

JP2014053078A - Electromagnetic relay

Info

Publication number: JP2014053078A
Application number: JP2012194797A
Authority: JP
Inventors: 茂 ▲辻▼村; Shigeru Tsujimura; Ken Kondo; 健近藤
Original assignee: Idec Corp
Current assignee: Idec Corp
Priority date: 2012-09-05
Filing date: 2012-09-05
Publication date: 2014-03-20
Anticipated expiration: 2032-09-05
Also published as: JP5822804B2

Abstract

PROBLEM TO BE SOLVED: To prevent a rocking body from rocking greatly even if an electromagnetic relay is impacted or vibrated.SOLUTION: An electromagnetic relay 1 has a rocking part 4 with a vertically extending rocking body 41 adapted to rock on a fulcrum near a lower end portion 411 as an electromagnet 3 is turned on/off. A transmission member 7 abutting an upper tip end portion 412 of the rocking body 41 transmits motion of the rocking body 41 to a movable terminal part 6 to move a movable contact 621 between an abutting position to abut a fixed contact 512 of a fixed terminal part 51 and a spaced position spaced from the fixed contact 512. The rocking body 41 has a metal member 413 extending upward from the lower end portion 411 and formed of a magnetic metal, and a resin member 414 including the tip end portion 412, connected to an upper end portion 416 of the metal member 413, and formed only of a resin. This prevents the rocking body 41 from rocking greatly even if the electromagnetic relay 1 is impacted or vibrated.

Description

本発明は、電磁リレーに関する。 The present invention relates to an electromagnetic relay.

従来より、電磁石のＯＮ／ＯＦＦにより、可動接触子を固定接触子に当接する当接位置と、固定接触子から離れた離間位置との間にて移動して、可動接触子と固定接触子との接点を物理的に開閉する電磁リレーが用いられている。例えば、特許文献１では、枠状のカードにおける往復移動方向に直交する内側面に係合用突起を突設し、板ばね状の可動接触片の上端部に設けた係合孔に係合用突起を係合した電磁リレーが開示されている。また、特許文献１の電磁リレーでは、枠状のカードにおける往復移動方向に平行な内側面に、可動接触片の上端部に当接可能な脱落防止用突部が突設されることにより、外部から衝撃力が加わった際におけるカードの脱落事故が防止される。 Conventionally, by moving the electromagnet ON / OFF, the movable contact and the fixed contact are moved between a contact position where the movable contact is in contact with the fixed contact and a separated position away from the fixed contact. Electromagnetic relays that physically open and close the contacts are used. For example, in Patent Document 1, an engagement protrusion is provided on an inner surface orthogonal to the reciprocating direction of a frame-shaped card, and the engagement protrusion is provided in an engagement hole provided at the upper end of a leaf spring-like movable contact piece. An engaged electromagnetic relay is disclosed. Further, in the electromagnetic relay of Patent Document 1, a drop-preventing protrusion that can come into contact with the upper end portion of the movable contact piece is provided on the inner side surface parallel to the reciprocating direction of the frame-shaped card. This prevents card dropout accidents when an impact force is applied.

特開２００５−２９４１６２号公報JP 2005-294162 A

ところで、電磁リレーに対して外部から衝撃や振動が付与された際には、可動鉄片も揺動することがある。特に、特許文献１の電磁リレーのように、可動鉄片（揺動部）の下端部近傍に支点が設けられる場合には、衝撃や振動の付与により揺動部が大きく揺動してしまう。これにより、電磁リレーの接点が意図せずに一時的に開状態または閉状態となり、電磁リレーが用いられるシステムにおいて予期しない不具合が発生する可能性がある。 By the way, when an impact or vibration is applied to the electromagnetic relay from the outside, the movable iron piece may also swing. In particular, when a fulcrum is provided in the vicinity of the lower end of the movable iron piece (swinging part) as in the electromagnetic relay of Patent Document 1, the swinging part swings greatly due to application of impact or vibration. As a result, the contacts of the electromagnetic relay are unintentionally temporarily opened or closed, and an unexpected failure may occur in a system in which the electromagnetic relay is used.

本発明は上記課題に鑑みなされたものであり、電磁リレーに衝撃や振動が付与された場合でも揺動部が大きく揺動することを防止することを目的としている。 The present invention has been made in view of the above problems, and an object thereof is to prevent the swinging portion from swinging greatly even when an impact or vibration is applied to the electromagnetic relay.

請求項１に記載の発明は、電磁リレーであって、電磁石と、一の方向におよそ沿って伸びる揺動本体を有し、前記電磁石のＯＮ／ＯＦＦにより、前記揺動本体の一端近傍における支点を中心として前記揺動本体が揺動する揺動部と、固定接触子を有する固定端子部と、可動接触子を有し、前記可動接触子が、前記固定接触子に当接する当接位置と、前記固定接触子から所定の可動方向に離れた離間位置との間にて移動可能な可動端子部と、前記揺動本体の他端である先端部と当接し、前記揺動本体の運動を前記可動端子部に伝達することにより前記可動接触子を前記当接位置と前記離間位置との間で移動する伝達部材とを備え、前記揺動本体が、前記一端から前記他端側に向かって伸びるとともに磁性金属により形成される金属部材と、前記先端部を含むとともに、前記他端側の前記金属部材の端部と接続され、前記磁性金属よりも比重が小さい樹脂のみにより形成される樹脂部材とを備える。 The invention according to claim 1 is an electromagnetic relay having an electromagnet and a swinging body extending approximately along one direction, and a fulcrum in the vicinity of one end of the swinging body by turning on and off the electromagnet. A swinging portion in which the swinging body swings around, a fixed terminal portion having a fixed contact, a movable contact, and a contact position where the movable contact abuts the fixed contact. A movable terminal portion movable between a fixed position away from the fixed contact member in a predetermined movable direction and a tip portion which is the other end of the swinging main body, and a movement of the swinging main body A transmission member that moves the movable contactor between the contact position and the separation position by transmitting to the movable terminal portion, and the swinging body is directed from the one end toward the other end side. A metal member that is elongated and formed of magnetic metal, and Together includes an end, is connected to the end portion of said metal member of said other end, and a resin member formed only by the resin density smaller than that of the magnetic metal.

請求項２に記載の発明は、請求項１に記載の電磁リレーであって、前記一端から前記端部に至る前記金属部材の長さが、前記金属部材の前記一端から前記樹脂部材の前記先端部に至る前記揺動本体の全長の９０％以下である。 Invention of Claim 2 is an electromagnetic relay of Claim 1, Comprising: The length of the said metal member from the said one end to the said edge part is the said front-end | tip of the said resin member from the said one end of the said metal member. 90% or less of the total length of the swinging main body reaching the part.

請求項３に記載の発明は、請求項１または２に記載の電磁リレーであって、前記樹脂部材が、前記伝達部材の一部と係合することにより、前記他端から前記一端とは反対側への前記伝達部材の移動を制限する抜止部を有する。 Invention of Claim 3 is an electromagnetic relay of Claim 1 or 2, Comprising: When the said resin member engages with a part of said transmission member, it is opposite to the said one end from the said other end A retaining portion for restricting movement of the transmission member to the side.

請求項４に記載の発明は、請求項１ないし３のいずれかに記載の電磁リレーであって、前記揺動本体と、前記固定端子部および前記可動端子部との間に配置されるとともに、絶縁性材料により形成される絶縁壁部をさらに備え、前記樹脂部材が、前記金属部材の前記端部の端面および側面を覆う。 Invention of Claim 4 is an electromagnetic relay in any one of Claim 1 thru | or 3, Comprising: While being arrange | positioned between the said rocking | fluctuation main body, the said fixed terminal part, and the said movable terminal part, An insulating wall portion formed of an insulating material is further provided, and the resin member covers an end surface and a side surface of the end portion of the metal member.

請求項５に記載の発明は、請求項１ないし４のいずれかに記載の電磁リレーであって、前記揺動部が、前記揺動本体の前記一端から、前記一の方向における前記電磁石の端部に対向する位置に向かって伸びるとともに前記磁性金属により形成される対向部をさらに有し、前記支点が前記揺動本体と前記対向部とが連結する部位に設けられる。 A fifth aspect of the present invention is the electromagnetic relay according to any one of the first to fourth aspects, wherein the swinging portion is connected to the end of the electromagnet in the one direction from the one end of the swinging main body. And extending further toward a position facing the portion, and further having a facing portion formed of the magnetic metal, and the fulcrum is provided at a portion where the swinging main body and the facing portion are connected.

本発明によれば、電磁リレーに衝撃や振動が付与された場合でも揺動本体が大きく揺動することを防止することができる。 According to the present invention, it is possible to prevent the swinging main body from swinging greatly even when an impact or vibration is applied to the electromagnetic relay.

電磁リレーを示す平面図である。It is a top view which shows an electromagnetic relay. カバー部を外した電磁リレーを示す図である。It is a figure which shows the electromagnetic relay which removed the cover part. 電磁リレーを示す断面図である。It is sectional drawing which shows an electromagnetic relay. 電磁リレーを示す断面図である。It is sectional drawing which shows an electromagnetic relay. 樹脂部材の近傍を示す図である。It is a figure which shows the vicinity of the resin member. 電磁リレーを示す断面図である。It is sectional drawing which shows an electromagnetic relay. 電磁リレーの組立図である。It is an assembly drawing of an electromagnetic relay. 比較例の電磁リレーを示す図である。It is a figure which shows the electromagnetic relay of a comparative example. 比較例の電磁リレーを示す図である。It is a figure which shows the electromagnetic relay of a comparative example.

図１は本発明の一の実施の形態に係る電磁リレー１を示す平面図であり、図２は図１の電磁リレー１における後述のカバー部２２を外した状態を示す図である。また、図３は図２の矢印Ａ−Ａの位置における電磁リレー１の断面図であり、図４は図２中の矢印Ｂ−Ｂの位置における電磁リレー１の断面図である。図３および図４では、図２中の矢印Ａ−Ａおよび矢印Ｂ−Ｂの位置における断面よりも背後も図示しており、また、カバー部２２の断面も図示している。また、図１ないし図４では、互いに直交する３方向をＸ方向、Ｙ方向およびＺ方向として示している。 FIG. 1 is a plan view showing an electromagnetic relay 1 according to an embodiment of the present invention, and FIG. 2 is a view showing a state where a cover portion 22 described later in the electromagnetic relay 1 of FIG. 1 is removed. 3 is a cross-sectional view of the electromagnetic relay 1 at the position of the arrow AA in FIG. 2, and FIG. 4 is a cross-sectional view of the electromagnetic relay 1 at the position of the arrow BB in FIG. 3 and FIG. 4, the back side is also shown rather than the cross section in the position of arrow AA and arrow BB in FIG. 2, and the cross section of the cover part 22 is also shown in figure. 1 to 4, three directions orthogonal to each other are shown as an X direction, a Y direction, and a Z direction.

図３に示すように、電磁リレー１は、電磁石３と、電磁石３のＯＮ／ＯＦＦにより揺動する揺動部４（アーマチュアとも呼ばれる。）と、それぞれが第１固定接触子５１２を有する２個の第１固定端子部５１と、それぞれが第２固定接触子５２２を有する２個の第２固定端子部５２と、それぞれが２個の可動接触子６２１，６２２を有する２個の可動端子部６と、揺動部４の運動を可動端子部６に伝達する伝達部材７（カードとも呼ばれる。）と、これらの構成を内部に収容する筐体２とを備える。なお、図３では、１つの第１固定端子部５１、第２固定端子部５２および可動端子部６のみを示している。 As shown in FIG. 3, the electromagnetic relay 1 includes two electromagnets 3, an oscillating portion 4 (also referred to as an armature) that oscillates when the electromagnet 3 is turned on and off, and each having a first fixed contact 512. First fixed terminal portion 51, two second fixed terminal portions 52 each having a second fixed contact 522, and two movable terminal portions 6 each having two movable contacts 621, 622. And a transmission member 7 (also referred to as a card) that transmits the movement of the swinging portion 4 to the movable terminal portion 6 and a housing 2 that accommodates these components inside. In FIG. 3, only one first fixed terminal portion 51, second fixed terminal portion 52 and movable terminal portion 6 are shown.

筐体２は、図３の上下方向（Ｚ方向）に垂直な方向に広がる板状のベース２１を有し、電磁石３、揺動部４、第１および第２固定端子部５１，５２、可動端子部６、並びに、伝達部材７は、ベース２１の上面２１１側に配置される。筐体２は、ベース２１上の電磁石３、揺動部４、第１および第２固定端子部５１，５２、可動端子部６、並びに、伝達部材７を覆うカバー部２２をさらに有する。以下の説明における上下方向は図３および図４の上下方向であり、重力方向に一致するものとするが、図３および図４の上下方向は重力方向と相違してもよい。 The housing 2 has a plate-like base 21 that extends in a direction perpendicular to the vertical direction (Z direction) in FIG. 3, and includes an electromagnet 3, a swinging portion 4, first and second fixed terminal portions 51 and 52, movable. The terminal portion 6 and the transmission member 7 are disposed on the upper surface 211 side of the base 21. The housing 2 further includes a cover portion 22 that covers the electromagnet 3 on the base 21, the swinging portion 4, the first and second fixed terminal portions 51 and 52, the movable terminal portion 6, and the transmission member 7. In the following description, the vertical direction is the vertical direction of FIGS. 3 and 4 and corresponds to the gravity direction, but the vertical direction of FIGS. 3 and 4 may be different from the gravity direction.

図３に示すように、電磁石３は、上下方向に伸びる棒状の芯部３１と、芯部３１の周囲を囲む筒部３２１を有するボビン３２と、筒部３２１の周囲に形成されたコイル３３と、コイル３３に接続された一対のコイル側端子３４とを有する。芯部３１は磁性材料（ここでは、鉄等の磁性金属）により形成される。ボビン３２は、筒部３２１の両端部に設けられる一対のフランジ部３２２をさらに有し、筒部３２１および一対のフランジ部３２２は１つの部材として樹脂にて形成される。一対のコイル側端子３４の上部はコイル３３を形成する導電線の両端にそれぞれ接続される。コイル側端子３４の下部は、ベース２１に設けられたコイル側端子挿入孔を介してベース２１の下面２１２から突出する。 As shown in FIG. 3, the electromagnet 3 includes a rod-shaped core portion 31 extending in the vertical direction, a bobbin 32 having a cylindrical portion 321 surrounding the core portion 31, and a coil 33 formed around the cylindrical portion 321. And a pair of coil-side terminals 34 connected to the coil 33. The core part 31 is formed of a magnetic material (here, a magnetic metal such as iron). The bobbin 32 further includes a pair of flange portions 322 provided at both ends of the cylindrical portion 321. The cylindrical portion 321 and the pair of flange portions 322 are formed of resin as one member. The upper portions of the pair of coil side terminals 34 are respectively connected to both ends of the conductive wire forming the coil 33. The lower part of the coil side terminal 34 protrudes from the lower surface 212 of the base 21 through a coil side terminal insertion hole provided in the base 21.

電磁石３は、芯部３１およびコイル３３と共に磁気回路を形成するヨーク３５をさらに有する。ヨーク３５は、上側（（＋Ｚ）側）のフランジ部３２２に沿うとともに芯部３１の上端に接続される接続部３５１と、当該フランジ部３２２の縁近傍における接続部３５１の端部から他方のフランジ部３２２の近傍まで垂れ下がる垂下部３５２とを有する。上下方向に関して、垂下部３５２の下端は芯部３１の下端とほぼ同じ高さであり、コイル３３よりも下方に位置する。 The electromagnet 3 further includes a yoke 35 that forms a magnetic circuit together with the core portion 31 and the coil 33. The yoke 35 extends along the flange portion 322 on the upper side ((+ Z) side) and is connected to the upper end of the core portion 31, and the other flange from the end portion of the connection portion 351 in the vicinity of the edge of the flange portion 322. A hanging portion 352 that hangs down to the vicinity of the portion 322. With respect to the vertical direction, the lower end of the drooping portion 352 is substantially the same height as the lower end of the core portion 31, and is positioned below the coil 33.

揺動部４は略Ｌ字状であり、芯部３１におよそ沿って伸びる揺動本体４１と、上下方向に関してコイル３３よりも下方に位置する揺動本体４１の下端部４１１から電磁石３の真下（揺動本体４１が伸びる方向における電磁石３の端部に対向する位置であり、正確には、芯部３１の真下）に向かって伸びて芯部３１の下端面と対向する対向部４２とを有する。揺動本体４１は、下端部４１１から上方に伸びるとともに、鉄等の磁性金属により形成される金属部材４１３を有する。実際には、揺動本体４１の金属部材４１３および対向部４２は当該磁性金属により１つの部材として形成される。揺動本体４１と対向部４２とが連結する部位（すなわち、略Ｌ字状の揺動部４における屈曲部）は、ベース２１上に設けられるヒンジばね２１３とヨーク３５の下端との間にて挟持される。後述するように、電磁石３のＯＮ／ＯＦＦにより揺動部４が揺動する際には、当該屈曲部を支点として揺動本体４１の上側の先端部４１２が電磁石３の上部に近接または離間する。すなわち、揺動部４は、上下方向に関してコイル３３よりも下方に位置する支点を中心として揺動する。揺動部４における支点は、揺動本体４１の下端部４１１近傍における任意の位置に設定されてよく、例えば、下端部４１１近傍にＸ方向に伸びる軸部材が取り付けられ、当該軸部材の両端が支持されることにより揺動本体４１が当該軸部材を中心として揺動してもよい。 The oscillating portion 4 is substantially L-shaped and extends from the oscillating main body 41 extending substantially along the core portion 31 and from the lower end 411 of the oscillating main body 41 located below the coil 33 in the vertical direction to directly below the electromagnet 3. (A position facing the end portion of the electromagnet 3 in the direction in which the swinging body 41 extends, to be exact, directly below the core portion 31) and a facing portion 42 facing the lower end surface of the core portion 31. Have. The swing body 41 has a metal member 413 that extends upward from the lower end 411 and is formed of a magnetic metal such as iron. Actually, the metal member 413 and the facing portion 42 of the swing body 41 are formed as one member by the magnetic metal. A portion where the swing body 41 and the facing portion 42 are connected (that is, a bent portion in the substantially L-shaped swing portion 4) is between the hinge spring 213 provided on the base 21 and the lower end of the yoke 35. It is pinched. As will be described later, when the swinging portion 4 swings by turning on / off the electromagnet 3, the upper end portion 412 of the swinging body 41 approaches or separates from the upper portion of the electromagnet 3 with the bent portion serving as a fulcrum. . That is, the swing part 4 swings around a fulcrum located below the coil 33 in the vertical direction. The fulcrum in the oscillating portion 4 may be set at an arbitrary position in the vicinity of the lower end 411 of the oscillating body 41. For example, a shaft member extending in the X direction is attached in the vicinity of the lower end 411, and both ends of the shaft member are By being supported, the swinging main body 41 may swing around the shaft member.

揺動本体４１は、樹脂のみにより形成される樹脂部材４１４をさらに有する。当該樹脂の比重は、金属部材４１３を形成する磁性金属よりも小さい。樹脂部材４１４は、金属部材４１３の上端部４１６（先端部４１２側の端部）と接続され、揺動本体４１の先端部４１２を含む。図５は、（＋Ｙ）側から（−Ｙ）方向を向いてを見た樹脂部材４１４の近傍を示す図である。図３および図５に示す電磁リレー１では、樹脂部材４１４と金属部材４１３（および対向部４２）との一体成形（インサート成形）により揺動部４が形成され、樹脂部材４１４により金属部材４１３の上端部４１６の端面、および、上端部４１６の全ての側面（すなわち、（＋Ｚ）方向を向く端面、並びに、Ｙ方向またはＸ方向を向く４個の側面）が覆われる。図５に示すように、金属部材４１３の上端部４１６には貫通孔４１３１が形成されており、貫通孔４１３１内にも樹脂が充填される。これにより、樹脂部材４１４と金属部材４１３とが強固に固定される。また、樹脂部材４１４の上部、すなわち、揺動本体４１の先端部４１２には貫通孔４１５が形成される。なお、樹脂部材４１４に形成される凹部に金属部材４１３を圧入する等により、樹脂部材４１４と金属部材４１３とが固定されてもよい。 The swing body 41 further includes a resin member 414 formed only from resin. The specific gravity of the resin is smaller than that of the magnetic metal forming the metal member 413. The resin member 414 is connected to the upper end portion 416 (the end portion on the distal end portion 412 side) of the metal member 413 and includes the distal end portion 412 of the swinging main body 41. FIG. 5 is a view showing the vicinity of the resin member 414 when viewed from the (+ Y) side in the (−Y) direction. In the electromagnetic relay 1 shown in FIG. 3 and FIG. 5, the swinging portion 4 is formed by integral molding (insert molding) of the resin member 414 and the metal member 413 (and the facing portion 42), and the resin member 414 forms the metal member 413. The end surface of the upper end 416 and all the side surfaces of the upper end 416 (that is, the end surface facing the (+ Z) direction and the four side surfaces facing the Y direction or the X direction) are covered. As shown in FIG. 5, a through hole 4131 is formed in the upper end portion 416 of the metal member 413, and the through hole 4131 is also filled with resin. Thereby, the resin member 414 and the metal member 413 are firmly fixed. Further, a through hole 415 is formed in the upper part of the resin member 414, that is, in the distal end portion 412 of the swinging main body 41. Note that the resin member 414 and the metal member 413 may be fixed by press-fitting the metal member 413 into a recess formed in the resin member 414.

図２に示すように、ベース２１は、各辺がＸ方向またはＹ方向に平行な略矩形であり、電磁石３および揺動部４は、ベース２１の（＋Ｙ）側の略半分の領域上に配置される。ベース２１上には、図２および図３に示すように、電磁石３および揺動部４が配置される空間と、第１および第２固定端子部５１，５２、並びに、可動端子部６が配置される空間とを仕切る隔壁であって、絶縁性材料により形成される絶縁壁部２３が設けられる。詳細には、図２に示す絶縁壁部２３は、揺動部４の（−Ｙ）側にてＺＸ平面に平行に広がる第１隔壁２３１と、Ｘ方向における第１隔壁２３１の各端部から（＋Ｙ）側に向かってＹＺ平面に平行に広がる第２隔壁２３２と、各第２隔壁２３２の（＋Ｙ）側の端部からＹ方向に平行なベース２１のエッジに向かってＺＸ平面に平行に広がる第３隔壁２３３とを有する。 As shown in FIG. 2, the base 21 has a substantially rectangular shape in which each side is parallel to the X direction or the Y direction, and the electromagnet 3 and the swinging portion 4 are on a substantially half region on the (+ Y) side of the base 21. Be placed. On the base 21, as shown in FIGS. 2 and 3, a space in which the electromagnet 3 and the swinging portion 4 are arranged, the first and second fixed terminal portions 51 and 52, and the movable terminal portion 6 are arranged. An insulating wall 23 that is a partition wall that partitions the space to be formed and is formed of an insulating material is provided. Specifically, the insulating wall portion 23 shown in FIG. 2 includes a first partition wall 231 that extends in parallel to the ZX plane on the (−Y) side of the swinging portion 4 and ends of the first partition wall 231 in the X direction. A second partition wall 232 extending in parallel to the YZ plane toward the (+ Y) side, and parallel to the ZX plane from the (+ Y) side end of each second partition wall 232 toward the edge of the base 21 parallel to the Y direction. And a third partition wall 233 that expands.

絶縁壁部２３は、ＹＺ平面に平行かつベース２１の中心を含む面に対して面対称な形状である。図３に示すように、ベース２１の上面２１１からの第１隔壁２３１の高さは、第２隔壁２３２（および第３隔壁２３３）の高さよりも低く、後述するように伝達部材７は図２の第１隔壁２３１の上方（（＋Ｚ）側）、かつ、２個の第２隔壁２３２の間に位置しており、Ｙ方向に移動する。図２に示すように、ベース２１上には、さらに、第１隔壁２３１のＸ方向における中央から（−Ｙ）側に向かってＹＺ平面に平行に広がるガイド壁部２４が設けられる。図３に示すように、ベース２１の上面２１１からのガイド壁部２４の高さは、第１隔壁２３１の高さと同じである。 The insulating wall portion 23 has a shape that is parallel to the YZ plane and plane-symmetric with respect to a plane that includes the center of the base 21. As shown in FIG. 3, the height of the first partition wall 231 from the upper surface 211 of the base 21 is lower than the height of the second partition wall 232 (and the third partition wall 233). It is located above the first partition 231 (on the (+ Z) side) and between the two second partitions 232 and moves in the Y direction. As shown in FIG. 2, a guide wall portion 24 that extends in parallel to the YZ plane from the center in the X direction of the first partition 231 toward the (−Y) side is further provided on the base 21. As shown in FIG. 3, the height of the guide wall portion 24 from the upper surface 211 of the base 21 is the same as the height of the first partition 231.

図２に示すように、ベース２１上において絶縁壁部２３よりも（−Ｙ）側の領域は、ガイド壁部２４により（＋Ｘ）側の領域と（−Ｘ）側の領域とに仕切られる。これらの２つの領域のそれぞれには、図３に示すように、（＋Ｙ）側から（−Ｙ）方向に向かって、すなわち、絶縁壁部２３から離れる方向に向かって順に、第２固定端子部５２、可動端子部６、第１固定端子部５１が配置される。このように、電磁リレー１は、（＋Ｘ）側の領域および（−Ｘ）側の領域のそれぞれに１つの端子群が設けられた、いわゆる２極タイプのリレーである。 As shown in FIG. 2, the region on the (−Y) side of the insulating wall 23 on the base 21 is partitioned into a region on the (+ X) side and a region on the (−X) side by the guide wall portion 24. In each of these two regions, as shown in FIG. 3, the second fixed terminal portion sequentially from the (+ Y) side toward the (−Y) direction, that is, toward the direction away from the insulating wall portion 23. 52, the movable terminal portion 6, and the first fixed terminal portion 51 are arranged. Thus, the electromagnetic relay 1 is a so-called two-pole type relay in which one terminal group is provided in each of the (+ X) side region and the (−X) side region.

図３および図４に示すように、伝達部材７は、ガイド壁部２４の上端を挟む２つの板状部７１１が設けられた伝達本体７１を有し、伝達部材７のＹ方向の移動がガイド壁部２４の上端によりガイドされる。図３に示すように、伝達本体７１の（＋Ｙ）側の端部には、（−Ｚ）側へと突出する接続部７２が形成され、接続部７２の先端には（＋Ｙ）側へと突出する突出部７２１が設けられる。突出部７２１は、揺動部４の樹脂部材４１４に形成された貫通孔４１５内に、貫通孔４１５とは非接触の状態にて挿入される。換言すると、樹脂部材４１４の貫通孔４１５が、伝達部材７の一部である突出部７２１と係合することにより、伝達部材７の上方への移動を制限する抜止部として機能する。 As shown in FIGS. 3 and 4, the transmission member 7 has a transmission body 71 provided with two plate-like portions 711 sandwiching the upper end of the guide wall portion 24, and the movement of the transmission member 7 in the Y direction is a guide. Guided by the upper end of the wall 24. As shown in FIG. 3, a connection portion 72 protruding toward the (−Z) side is formed at the (+ Y) side end of the transmission body 71, and the tip of the connection portion 72 toward the (+ Y) side. A protruding portion 721 that protrudes is provided. The protruding portion 721 is inserted into the through hole 415 formed in the resin member 414 of the swinging portion 4 in a non-contact state with the through hole 415. In other words, the through hole 415 of the resin member 414 functions as a retaining portion that restricts the upward movement of the transmission member 7 by engaging with the protruding portion 721 that is a part of the transmission member 7.

図３および図４に示すように、伝達部材７の各板状部７１１においてガイド壁部２４とは反対側の面には、可動端子部６と当接する当接部７３が設けられる。当接部７３には（−Ｙ）側に突出する円柱状の突起部７３１が形成され、突起部７３１の先端には（＋Ｚ）側に向かって突出する円柱状の係止部７３２が設けられる。突起部７３１の直径と係止部７３２の直径はほぼ同じである。電磁リレー１では、伝達部材７の全体が１つの部材として樹脂にて形成される。 As shown in FIGS. 3 and 4, a contact portion 73 that contacts the movable terminal portion 6 is provided on the surface of each plate-like portion 711 of the transmission member 7 opposite to the guide wall portion 24. The abutting portion 73 is formed with a cylindrical projection 731 that protrudes toward the (−Y) side, and a cylindrical locking portion 732 that protrudes toward the (+ Z) side is provided at the tip of the projection 731. . The diameter of the protruding portion 731 and the diameter of the locking portion 732 are substantially the same. In the electromagnetic relay 1, the entire transmission member 7 is formed of resin as one member.

図３に示すように、可動端子部６は、一端がベース２１に対して固定されるとともに導電性材料にて形成される板ばね部６１と、板ばね部６１の当該一端から離れた部位において（−Ｙ）側および（＋Ｙ）側の面上にそれぞれ設けられる第１および第２可動接触子６２１，６２２と、板ばね部６１を介して第１および第２可動接触子６２１，６２２と電気的に接続される接点側端子６３とを有する。図３および図４に示すように、板ばね部６１の他端（上端）近傍には、例えばバーリング加工により貫通孔６１１が形成され、当該貫通孔６１１には伝達部材７の突起部７３１が挿入される。既述のように、（−Ｙ）方向に突出する突起部７３１には、貫通孔６１１を通り抜けた先端側においてＹ方向に略垂直な方向（ここでは、（＋Ｚ）方向）に突出する係止部７３２が設けられる。図４に示すように、貫通孔６１１の直径（内径）α１は円柱状の突起部７３１の直径（および、係止部７３２の直径）よりも十分に大きく、突起部７３１は貫通孔６１１のおよそ中央に配置される。したがって、突起部７３１は、常時、貫通孔６１１の縁と非接触である。また、貫通孔６１１の直径α１は、Ｚ方向における係止部７３２の長さα２よりも僅かに小さい。 As shown in FIG. 3, the movable terminal portion 6 has one end fixed to the base 21 and a leaf spring portion 61 formed of a conductive material, and a portion away from the one end of the leaf spring portion 61. The first and second movable contacts 621 and 622 provided on the (−Y) side and (+ Y) side surfaces, respectively, and the first and second movable contacts 621 and 622 via the leaf spring portion 61 are electrically connected. And a contact-side terminal 63 that is connected to each other. As shown in FIGS. 3 and 4, a through hole 611 is formed in the vicinity of the other end (upper end) of the leaf spring portion 61 by, for example, burring, and the protruding portion 731 of the transmission member 7 is inserted into the through hole 611. Is done. As described above, the protrusion 731 protruding in the (−Y) direction has a latching protruding in the direction substantially perpendicular to the Y direction (here, the (+ Z) direction) on the tip side passing through the through hole 611. A portion 732 is provided. As shown in FIG. 4, the diameter (inner diameter) α <b> 1 of the through hole 611 is sufficiently larger than the diameter of the columnar protrusion 731 (and the diameter of the locking portion 732), and the protrusion 731 is approximately the size of the through hole 611. Located in the center. Therefore, the protrusion 731 is not in contact with the edge of the through hole 611 at all times. Further, the diameter α1 of the through hole 611 is slightly smaller than the length α2 of the locking portion 732 in the Z direction.

図３に示す第２固定端子部５２は、一端がベース２１に固定されるとともに導電性材料にて形成される板状部５２１と、板状部５２１の他端近傍にて（−Ｙ）側の面上に設けられる第２固定接触子５２２と、板状部５２１を介して第２固定接触子５２２と電気的に接続される接点側端子５２３とを有する。第１固定端子部５１は、一端がベース２１に対して固定されるとともに導電性材料にて形成される板ばね部５１１と、板ばね部５１１の他端近傍にて（＋Ｙ）側の面上に設けられる第１固定接触子５１２と、板ばね部５１１を介して第１固定接触子５１２と電気的に接続される接点側端子５１３とを有する。第１および第２固定端子部５１，５２、並びに、可動端子部６における接点側端子５１３，５２３，６３の下部は、ベース２１に設けられた接点側端子挿入孔を介してベース２１の下面２１２から突出する。 The second fixed terminal portion 52 shown in FIG. 3 has a plate-like portion 521 that is fixed to the base 21 at one end and formed of a conductive material, and the (−Y) side in the vicinity of the other end of the plate-like portion 521. And a contact-side terminal 523 electrically connected to the second fixed contact 522 through the plate-like portion 521. The first fixed terminal portion 51 has a plate spring portion 511 having one end fixed to the base 21 and formed of a conductive material, and a surface on the (+ Y) side in the vicinity of the other end of the plate spring portion 511. And a contact-side terminal 513 that is electrically connected to the first fixed contact 512 via a leaf spring portion 511. Lower portions of the first and second fixed terminal portions 51 and 52 and the contact side terminals 513, 523 and 63 in the movable terminal portion 6 are provided on the lower surface 212 of the base 21 through contact side terminal insertion holes provided in the base 21. Protrude from.

電磁リレー１では、電磁石３がＯＦＦである、すなわち、コイル３３に電流を流していない時には、ガイド壁部２４の（＋Ｘ）側および（−Ｘ）側のそれぞれの領域において、可動端子部６の板ばね部６１の上端（より詳細には、貫通孔６１１の周囲の部位）が伝達部材７の当接部７３を（＋Ｙ）側に付勢するとともに、（−Ｙ）側の第１可動接触子６２１が（−Ｙ）側の第１固定接触子５１２から離間する。一方、電磁石３がＯＮである、すなわち、一対のコイル側端子３４を介してコイル３３に電流を流している時には、図６に示すように、揺動部４の対向部４２が芯部３１の下端面側に磁気的に吸引されて揺動本体４１の先端部４１２が（−Ｙ）側に移動する。このとき、先端部４１２が伝達部材７の接続部７２に当接して伝達部材７を（−Ｙ）側に移動する。これにより、伝達部材７の当接部７３が板ばね部６１の上端を（−Ｙ）側に付勢し、板ばね部６１が撓んで第１可動接触子６２１が第１固定接触子５１２に当接する（いわゆる、ＮＯ接点（またはａ接点）が閉状態となる）。以下の説明では、伝達部材７の移動方向（Ｙ方向）を「可動方向」ともいう。 In the electromagnetic relay 1, when the electromagnet 3 is OFF, that is, when no current is passed through the coil 33, the movable terminal portion 6 has a region of (+ X) side and (−X) side of the guide wall portion 24. The upper end of the leaf spring portion 61 (more specifically, the portion around the through-hole 611) biases the contact portion 73 of the transmission member 7 toward the (+ Y) side and the first movable contact on the (−Y) side. The child 621 is separated from the first fixed contact 512 on the (−Y) side. On the other hand, when the electromagnet 3 is ON, that is, when a current is passed through the coil 33 via the pair of coil side terminals 34, the facing portion 42 of the swinging portion 4 is connected to the core portion 31 as shown in FIG. 6. The tip end 412 of the swinging main body 41 is moved to the (−Y) side by being magnetically attracted to the lower end surface side. At this time, the distal end portion 412 comes into contact with the connection portion 72 of the transmission member 7 and moves the transmission member 7 to the (−Y) side. Accordingly, the contact portion 73 of the transmission member 7 urges the upper end of the leaf spring portion 61 toward the (−Y) side, the leaf spring portion 61 bends, and the first movable contact 621 becomes the first fixed contact 512. Abut (the so-called NO contact (or a contact) is closed). In the following description, the moving direction (Y direction) of the transmission member 7 is also referred to as “movable direction”.

このように、伝達部材７が揺動本体４１の運動を板ばね部６１に伝達して板ばね部６１が撓むことにより、第１可動接触子６２１が、第１固定接触子５１２に当接する当接位置と、第１固定接触子５１２から可動方向に離れた離間位置との間にて移動可能である。実際には、電磁石のＯＦＦにより、図３のように第１可動接触子６２１が離間位置に位置する（すなわち、第１固定接触子５１２から離間する）際に、第１固定接触子５１２とは反対方向を向く第２可動接触子６２２が（＋Ｙ）側の第２固定接触子５２２と当接する（いわゆる、ＮＣ接点（またはｂ接点）が閉状態となる）。また、電磁石のＯＮにより、図６のように第１可動接触子６２１が当接位置に位置する際に、第２可動接触子６２２が第２固定接触子５２２と離間する。 As described above, the transmission member 7 transmits the movement of the swinging main body 41 to the leaf spring portion 61 and the leaf spring portion 61 bends, whereby the first movable contact 621 contacts the first fixed contact 512. It is movable between the contact position and a separated position away from the first fixed contact 512 in the movable direction. Actually, when the electromagnet is turned off and the first movable contact 621 is located at the separated position as shown in FIG. 3 (that is, separated from the first fixed contact 512), the first fixed contact 512 is The second movable contact 622 facing in the opposite direction contacts the second stationary contact 522 on the (+ Y) side (so-called NC contact (or b contact) is closed). Further, when the electromagnet is turned on, the second movable contact 622 is separated from the second fixed contact 522 when the first movable contact 621 is located at the contact position as shown in FIG.

本実施の形態に係る電磁リレー１では、仮に第１可動接触子６２１と第１固定接触子５１２とが溶着した場合であっても、電磁石３をＯＦＦにした状態で第２可動接触子６２２と第２固定接触子５２２との間隔が所定値（例えば０．５ミリメートル）以上となり、仮に第２可動接触子６２２と第２固定接触子５２２とが溶着した場合であっても、電磁石３をＯＮにした状態で第１可動接触子６２１と第１固定接触子５１２との間隔が所定値以上となり、強制ガイド接点構造が実現されている。このように、電磁リレー１は強制ガイドリレーである。 In the electromagnetic relay 1 according to the present embodiment, even if the first movable contact 621 and the first fixed contact 512 are welded, the second movable contact 622 and the electromagnet 3 are turned off. Even when the distance from the second fixed contact 522 becomes a predetermined value (for example, 0.5 mm) or more and the second movable contact 622 and the second fixed contact 522 are welded, the electromagnet 3 is turned on. In this state, the distance between the first movable contact 621 and the first fixed contact 512 is equal to or greater than a predetermined value, and a forced guide contact structure is realized. Thus, the electromagnetic relay 1 is a forced guide relay.

電磁リレー１を組み立てる際には、図７に示すように、絶縁壁部２３およびガイド壁部２４が形成されたベース２１（実際には、樹脂により１つの部材として形成される。）、第１固定端子部５１、第２固定端子部５２、可動端子部６、伝達部材７、電磁石３および揺動部４の組立体３０、並びに、カバー部２２が準備される。そして、ベース２１に対して、第１固定端子部５１、第２固定端子部５２および可動端子部６のそれぞれを、図７中に符号Ａ１を付す矢印にて示す方向（以下、「組立方向Ａ１」という。）に移動して、ベース２１に形成された挿入孔に接点側端子５１３，５２３，６３を差し込むことにより、第１固定端子部５１、第２固定端子部５２および可動端子部６がベース２１に固定される。なお、図７では、１つの第１固定端子部５１、第２固定端子部５２および可動端子部６のみを図示している。 When assembling the electromagnetic relay 1, as shown in FIG. 7, a base 21 (in fact, formed as one member with resin) on which an insulating wall portion 23 and a guide wall portion 24 are formed, is first. The fixed terminal portion 51, the second fixed terminal portion 52, the movable terminal portion 6, the transmission member 7, the assembly 30 of the electromagnet 3 and the swinging portion 4, and the cover portion 22 are prepared. Then, with respect to the base 21, each of the first fixed terminal portion 51, the second fixed terminal portion 52, and the movable terminal portion 6 is indicated by an arrow indicated by an arrow A1 in FIG. 7 (hereinafter referred to as “assembly direction A1”). The first fixed terminal portion 51, the second fixed terminal portion 52, and the movable terminal portion 6 are moved by inserting the contact-side terminals 513, 523, 63 into the insertion holes formed in the base 21. It is fixed to the base 21. In FIG. 7, only one first fixed terminal portion 51, second fixed terminal portion 52 and movable terminal portion 6 are illustrated.

また、ベース２１に対して組立体３０を組立方向Ａ１に移動して、ベース２１に形成された挿入孔にコイル側端子３４を差し込むことにより、組立体３０がベース２１に固定される。さらに、図３に示すように、伝達部材７の接続部７２の突出部７２１を揺動部４の樹脂部材４１４に形成された貫通孔４１５内に挿入するとともに、伝達部材７の突起部７３１を可動端子部６の貫通孔６１１に挿入することにより、伝達部材７が揺動部４および可動端子部６に接続される。その後、図７の組立方向Ａ１に沿って、カバー部２２をベース２１に取り付けることにより、電磁リレー１の組立が完了する。 Further, the assembly 30 is fixed to the base 21 by moving the assembly 30 in the assembly direction A <b> 1 with respect to the base 21 and inserting the coil side terminal 34 into an insertion hole formed in the base 21. Further, as shown in FIG. 3, the protruding portion 721 of the connecting portion 72 of the transmission member 7 is inserted into the through hole 415 formed in the resin member 414 of the swinging portion 4, and the protruding portion 731 of the transmission member 7 is inserted. The transmission member 7 is connected to the swing part 4 and the movable terminal part 6 by being inserted into the through hole 611 of the movable terminal part 6. Then, the assembly of the electromagnetic relay 1 is completed by attaching the cover part 22 to the base 21 along the assembly direction A1 of FIG.

図８は比較例の電磁リレー９の一部を示す図である。比較例の電磁リレー９では、揺動部９１の全体が鉄により形成され、樹脂にて形成される伝達部材９５が揺動部９１により付勢される。また、揺動部９１と、固定端子部９２（および可動端子部）との間に配置される絶縁壁部９３が、固定端子部９２の上方を覆う鍔部９３１を有する。図８の電磁リレー９では、このような構造により、固定端子部９２と、揺動部９１との間における一定の絶縁距離（いわゆる、コイル−接点間の強化絶縁距離）を確保することが可能となる。 FIG. 8 is a diagram showing a part of the electromagnetic relay 9 of the comparative example. In the electromagnetic relay 9 of the comparative example, the entire swinging portion 91 is formed of iron, and the transmission member 95 formed of resin is urged by the swinging portion 91. Further, the insulating wall portion 93 disposed between the swinging portion 91 and the fixed terminal portion 92 (and the movable terminal portion) has a flange portion 931 that covers the upper portion of the fixed terminal portion 92. In the electromagnetic relay 9 of FIG. 8, it is possible to ensure a certain insulation distance (so-called reinforced insulation distance between the coil and the contact) between the fixed terminal portion 92 and the swinging portion 91 by such a structure. It becomes.

一方で、図８の電磁リレー９では、固定端子部９２を絶縁壁部９３の鍔部９３１の下方に配置してベース９６に取り付ける必要があるため、図７の電磁リレー１のように、固定端子部９２をベース９６に対して一方向に移動するのみでは、固定端子部９２の取付を行うことができない。実際には、図８の紙面に垂直な方向に沿って固定端子部９２をベース９６に取り付ける構造を採用せざるを得ず、電磁リレー９の組立動作が複雑となり、生産効率が低下する。特に、自動組立機により電磁リレー９を組み立てる際には、組立機の構造が複雑になるとともに、動作プログラムの作成や、組立機の調整作業、あるいは、メンテナンス作業が難しくなり、組立機に要するコストが増大してしまう。図９のように、絶縁壁部９３における鍔部９３１を省略することにより、電磁リレー９の組立動作を簡素化することは可能であるが、この場合、固定端子部９２と、揺動部９１との間における一定の絶縁距離を確保することができない。 On the other hand, in the electromagnetic relay 9 of FIG. 8, the fixed terminal portion 92 needs to be disposed below the flange portion 931 of the insulating wall portion 93 and attached to the base 96, so that it is fixed like the electromagnetic relay 1 of FIG. 7. The fixed terminal portion 92 cannot be attached only by moving the terminal portion 92 in one direction with respect to the base 96. In practice, a structure in which the fixed terminal portion 92 is attached to the base 96 along a direction perpendicular to the paper surface of FIG. 8 must be adopted, and the assembly operation of the electromagnetic relay 9 becomes complicated, resulting in a reduction in production efficiency. In particular, when assembling the electromagnetic relay 9 by an automatic assembly machine, the structure of the assembly machine becomes complicated, and it becomes difficult to create an operation program, to adjust the assembly machine, or to perform maintenance work. Will increase. As shown in FIG. 9, it is possible to simplify the assembly operation of the electromagnetic relay 9 by omitting the flange portion 931 in the insulating wall portion 93, but in this case, the fixed terminal portion 92 and the swinging portion 91. It is not possible to ensure a certain insulation distance between the two.

さらに、図８および図９の比較例の電磁リレー９では、揺動部９１において上下方向に伸びる揺動本体９１１の全体が鉄により形成されるとともに、揺動本体９１１の下端部近傍に支点が設けられるため、電磁リレー９に対して外部から衝撃や振動が加わった際に、揺動本体９１１が大きく揺動してしまう。これにより、電磁リレー９の接点が一時的に意図せずに開状態または閉状態となり、電磁リレー９が用いられるシステムにおいて予期しない不具合が発生する可能性がある。 Further, in the electromagnetic relay 9 of the comparative example of FIGS. 8 and 9, the entire swing body 911 extending in the vertical direction in the swing section 91 is formed of iron, and a fulcrum is provided near the lower end of the swing body 911. Therefore, when an impact or vibration is applied to the electromagnetic relay 9 from the outside, the swinging main body 911 swings greatly. As a result, the contacts of the electromagnetic relay 9 are temporarily unintentionally opened or closed, and an unexpected malfunction may occur in a system in which the electromagnetic relay 9 is used.

これに対し、図３の電磁リレー１では、上下方向におよそ沿って伸びる揺動本体４１が、下端部４１１から上方に伸びるとともに磁性金属により形成される金属部材４１３と、金属部材４１３の上端部４１６と接続され、当該磁性金属よりも比重が小さい樹脂のみにより形成される樹脂部材４１４とを有する。このように、揺動本体４１の上部を、磁性金属にて形成される下部よりも比重が小さい樹脂にて形成することにより、電磁リレー１に衝撃や振動が付与された場合でも揺動本体４１が大きく揺動することを防止することができ、電磁リレー１が用いられるシステムにおいて予期しない不具合が発生することを抑制することができる。 On the other hand, in the electromagnetic relay 1 of FIG. 3, the swinging body 41 that extends approximately along the vertical direction extends upward from the lower end 411 and is formed of a magnetic metal, and the upper end of the metal member 413. 416 and a resin member 414 that is formed only from a resin having a specific gravity smaller than that of the magnetic metal. As described above, the upper portion of the swing body 41 is formed of a resin having a specific gravity smaller than that of the lower portion formed of magnetic metal, so that the swing body 41 can be applied even when an impact or vibration is applied to the electromagnetic relay 1. Can be prevented from swinging greatly, and an unexpected failure can be prevented from occurring in a system in which the electromagnetic relay 1 is used.

また、樹脂部材４１４が金属部材４１３の上端部４１６の端面および側面を覆うことにより、図８の電磁リレー９のように絶縁壁部９３に鍔部９３１を設けることなく、Ｚ方向に真っ直ぐな部位のみにより構成される絶縁壁部２３を採用して、（＋Ｙ）側の第２固定端子部５２と、揺動部４の金属部材４１３との間における一定の絶縁距離を確保することができる。これにより、第１固定端子部５１、第２固定端子部５２および可動端子部６のそれぞれを、一定の組立方向Ａ１に移動するのみでベース２１に固定することができ、電磁リレー９の組立動作を簡素化することができる。その結果、コイル−接点間の一定の絶縁距離を確保した電磁リレー１の生産効率が向上し、製造コストを削減することができる。特に、自動組立機により電磁リレー１を組み立てる際には、組立機の構造を簡素化して、動作プログラムの作成や、組立機の調整作業、あるいは、メンテナンス作業も簡素化することができ、組立機に要するコストを削減することができる。 Further, the resin member 414 covers the end face and the side surface of the upper end portion 416 of the metal member 413, so that the insulating wall portion 93 is not provided with the flange portion 931 as in the electromagnetic relay 9 of FIG. By adopting the insulating wall portion 23 constituted only by the above, it is possible to ensure a certain insulating distance between the (+ Y) side second fixed terminal portion 52 and the metal member 413 of the swinging portion 4. Thereby, each of the 1st fixed terminal part 51, the 2nd fixed terminal part 52, and the movable terminal part 6 can be fixed to the base 21 only by moving to the fixed assembly direction A1, and the assembly operation of the electromagnetic relay 9 Can be simplified. As a result, the production efficiency of the electromagnetic relay 1 that secures a constant insulation distance between the coil and the contact is improved, and the manufacturing cost can be reduced. In particular, when the electromagnetic relay 1 is assembled by an automatic assembly machine, the structure of the assembly machine can be simplified, and the creation of an operation program, adjustment work of the assembly machine, or maintenance work can be simplified. The cost required for this can be reduced.

ところで、電磁リレー１に衝撃や振動が付与された場合に揺動本体４１が大きく揺動することを防止するという観点では、揺動本体４１において、下端部４１１の端面から上端部４１６の端面に至る金属部材４１３の長さが、金属部材４１３の下端部４１１の端面から樹脂部材４１４の先端部４１２の端面に至る揺動本体４１の全長の９０％以下であることが好ましい。下端部４１１近傍に支点が設けられる揺動本体４１の一定の強度を確保するには、好ましくは、金属部材４１３の長さが揺動本体４１の全長の１０％以上（より好ましくは、７０％以上）である。 By the way, from the viewpoint of preventing the swinging main body 41 from greatly swinging when an impact or vibration is applied to the electromagnetic relay 1, the end of the lower end 411 is changed to the end face of the upper end 416 in the swinging main body 41. The length of the reaching metal member 413 is preferably 90% or less of the entire length of the swinging main body 41 from the end surface of the lower end portion 411 of the metal member 413 to the end surface of the tip end portion 412 of the resin member 414. In order to ensure a certain strength of the swinging main body 41 provided with a fulcrum in the vicinity of the lower end 411, the length of the metal member 413 is preferably 10% or more of the total length of the swinging main body 41 (more preferably 70%). Above).

電磁リレー１では、樹脂にて形成される伝達部材７が揺動本体４１の樹脂部材４１４と当接することにより、樹脂にて形成される伝達部材９５が磁性金属にて形成される揺動部９１と当接する比較例の電磁リレー９に比べて、伝達部材７における摩耗の発生を低減することが可能となる。 In the electromagnetic relay 1, the transmission member 7 formed of resin contacts the resin member 414 of the swing main body 41, so that the transmission member 95 formed of resin is formed of a magnetic metal. It is possible to reduce the occurrence of wear in the transmission member 7 as compared with the electromagnetic relay 9 of the comparative example that comes into contact with.

以上、本発明の実施の形態について説明してきたが、本発明は上記実施の形態に限定されるものではなく、様々な変形が可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made.

上記実施の形態では、金属部材４１３の下端部４１１よりも下方に位置するベース２１の上面２１１から、金属部材４１３の上端部４１６よりも上方の高さまで広がる絶縁壁部２３、および、金属部材４１３の上端部４１６の端面および側面を覆う樹脂部材４１４により、第２固定端子部５２と揺動部４の金属部材４１３との間における絶縁距離を大きくすることが実現される。しかしながら、樹脂部材４１４が金属部材４１３の上端部４１６の端面および側面を覆う揺動本体４１では、揺動本体４１と固定端子部５１，５２および可動端子部６との間に配置される絶縁壁部２３の高さが金属部材４１３の上端部４１６よりも低い場合であっても、一定の絶縁距離を確保することが可能である。 In the above-described embodiment, the insulating wall portion 23 extending from the upper surface 211 of the base 21 located below the lower end portion 411 of the metal member 413 to the height above the upper end portion 416 of the metal member 413, and the metal member 413. By increasing the insulation distance between the second fixed terminal portion 52 and the metal member 413 of the swinging portion 4, the resin member 414 that covers the end surface and the side surface of the upper end portion 416 of the upper end portion 416 is realized. However, in the oscillating body 41 in which the resin member 414 covers the end surface and the side surface of the upper end portion 416 of the metal member 413, an insulating wall disposed between the oscillating body 41 and the fixed terminal portions 51 and 52 and the movable terminal portion 6. Even when the height of the portion 23 is lower than the upper end portion 416 of the metal member 413, it is possible to ensure a certain insulation distance.

電磁リレー１の設計によっては、揺動部４の金属部材４１３の上部を電磁石３が磁気的に吸引する構造等を採用することにより、揺動部４において対向部４２が省略されてもよい。また、芯部３１がベース２１に沿って伸びるように電磁石３が配置されてもよい。さらに、揺動本体４１において、一端である下端部４１１から他端である先端部４１２へと向かう方向は、ベース２１に略垂直な方向（Ｚ方向）には限定されない。 Depending on the design of the electromagnetic relay 1, the facing portion 42 may be omitted in the swing portion 4 by adopting a structure in which the electromagnet 3 magnetically attracts the upper portion of the metal member 413 of the swing portion 4. Further, the electromagnet 3 may be arranged so that the core portion 31 extends along the base 21. Furthermore, in the oscillating body 41, the direction from the lower end portion 411 that is one end to the tip end portion 412 that is the other end is not limited to a direction substantially perpendicular to the base 21 (Z direction).

上記実施の形態では、伝達部材７の一部が挿入される樹脂部材４１４の貫通孔４１５により、伝達部材７の上方への移動を制限する抜止部が実現されるが、例えば、伝達部材７の接続部７２に貫通孔が形成され、樹脂部材４１４に当該貫通孔に挿入される突出部が形成されることにより、伝達部材７の上方への移動が制限されてもよい。以上のように、樹脂部材４１４において伝達部材７の一部と係合することにより伝達部材７の上方への（すなわち、揺動本体４１の上記他端から上記一端とは反対側への）移動を制限する抜止部は様々な態様にて実現可能である。 In the above embodiment, the through-hole 415 of the resin member 414 into which a part of the transmission member 7 is inserted realizes a retaining portion that restricts the upward movement of the transmission member 7. The connection member 72 may be formed with a through hole, and the resin member 414 may be formed with a protruding portion that is inserted into the through hole, thereby restricting the upward movement of the transmission member 7. As described above, the resin member 414 moves upward of the transmission member 7 by engaging with a part of the transmission member 7 (that is, from the other end of the swinging body 41 to the side opposite to the one end). The retaining portion for limiting the above can be realized in various modes.

揺動本体４１の上部に樹脂部材４１４を設けることにより、衝撃や振動による揺動本体４１の大きな揺動を防止する上記手法は、１つの可動端子部（１つの可動接触子）に対して１つの固定端子部のみが設けられる電磁リレー（もちろん、１つの可動端子部および１つの固定端子部の複数の組合せを含む電磁リレーであってもよい。）にて採用されてもよい。 By providing the resin member 414 on the upper part of the swinging body 41, the above technique for preventing the swinging of the swinging body 41 due to impact or vibration is one for one movable terminal portion (one movable contact). It may be employed in an electromagnetic relay provided with only one fixed terminal portion (which may of course be an electromagnetic relay including a plurality of combinations of one movable terminal portion and one fixed terminal portion).

上記実施の形態および各変形例における構成は、相互に矛盾しない限り適宜組み合わされてよい。 The configurations in the above-described embodiments and modifications may be combined as appropriate as long as they do not contradict each other.

１電磁リレー
３電磁石
４揺動部
６可動端子部
７伝達部材
２３絶縁壁部
４１揺動本体
４２対向部
５１，５２固定端子部
４１１下端部
４１２先端部
４１３金属部材
４１４樹脂部材
４１５貫通孔
４１６上端部
５１２，５２２固定接触子
６２１，６２２可動接触子 DESCRIPTION OF SYMBOLS 1 Electromagnetic relay 3 Electromagnet 4 Oscillating part 6 Movable terminal part 7 Transmission member 23 Insulating wall part 41 Oscillating main body 42 Opposing part 51,52 Fixed terminal part 411 Lower end part 412 Tip part 413 Metal member 414 Resin member 415 Through-hole 416 Upper end Part 512, 522 Fixed contact 621, 622 Movable contact

Claims

An electromagnetic relay,
An electromagnet,
A swinging body having a swinging body extending approximately along one direction, wherein the swinging body swings around a fulcrum in the vicinity of one end of the swinging body by turning on and off the electromagnet;
A fixed terminal portion having a fixed contact;
A movable terminal having a movable contact and movable between a contact position where the movable contact contacts the fixed contact and a separated position separated from the fixed contact in a predetermined movable direction. When,
The movable contact is moved between the abutting position and the separated position by abutting with a tip portion which is the other end of the oscillating body and transmitting the motion of the oscillating body to the movable terminal portion. A transmission member;
With
The swing body is
A metal member extending from the one end toward the other end and formed of a magnetic metal;
A resin member that includes the tip portion and is connected to an end portion of the metal member on the other end side and is formed only by a resin having a specific gravity smaller than that of the magnetic metal,
An electromagnetic relay comprising:

The electromagnetic relay according to claim 1,
The length of the metal member extending from the one end to the end portion is 90% or less of the total length of the swinging body extending from the one end of the metal member to the tip end portion of the resin member. relay.

The electromagnetic relay according to claim 1 or 2,
The electromagnetic relay according to claim 1, wherein the resin member includes a retaining portion that restricts movement of the transmission member from the other end to a side opposite to the one end by engaging with a part of the transmission member.

The electromagnetic relay according to any one of claims 1 to 3,
In addition to being arranged between the swing body, the fixed terminal portion and the movable terminal portion, further comprising an insulating wall portion formed of an insulating material,
The electromagnetic relay, wherein the resin member covers an end surface and a side surface of the end portion of the metal member.

The electromagnetic relay according to any one of claims 1 to 4,
The swinging portion further extends from the one end of the swinging main body toward a position facing the end of the electromagnet in the one direction and further includes a facing portion formed by the magnetic metal;
The electromagnetic relay, wherein the fulcrum is provided at a portion where the swinging main body and the facing portion are connected.