JP5366315B2 - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
JP5366315B2
JP5366315B2 JP2009160772A JP2009160772A JP5366315B2 JP 5366315 B2 JP5366315 B2 JP 5366315B2 JP 2009160772 A JP2009160772 A JP 2009160772A JP 2009160772 A JP2009160772 A JP 2009160772A JP 5366315 B2 JP5366315 B2 JP 5366315B2
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bobbin
coil
case
fixed contact
movable contact
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JP2011018465A (en
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和彦 堀井
純一 渡邉
室  直樹
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Priority to JP2009160772A priority Critical patent/JP5366315B2/en
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to EP16163216.1A priority patent/EP3059754B1/en
Priority to PCT/JP2010/060392 priority patent/WO2010150712A1/en
Priority to CA2766036A priority patent/CA2766036C/en
Priority to US13/379,672 priority patent/US8471656B2/en
Priority to EP10792030.8A priority patent/EP2447976B1/en
Publication of JP2011018465A publication Critical patent/JP2011018465A/en
Priority to US13/896,758 priority patent/US8912869B2/en
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Description

本発明は、コイルを有する電磁石の吸引力、及び可動接点が端部に配設された可動バネの弾性復帰力により、可動接点が固定接点に接触、離間することで開閉動作を行う電磁継電器に関する。   The present invention relates to an electromagnetic relay that opens and closes when a movable contact contacts and separates from a fixed contact by an attraction force of an electromagnet having a coil and an elastic return force of a movable spring provided at the end of the movable contact. .

電磁継電器は、冬期や寒冷地等の周囲環境温度の低い季節や場所では、密閉状態のケース内で氷結現象が発生し、接点導通不良を引き起こすことがある。ここで、氷結現象について簡単に説明する。コイルに通電することによって、コイルが持つ抵抗成分によって発熱し、これがボビンや通電経路を形成する接点及び端子に伝わってケース内の温度が上昇する。このとき、外部温度が低ければ、ケースの内外で温度差が生じるので、ケース内で水蒸気を含んだ空気の対流が起る。そして、ケース内壁部周辺の飽和水蒸気量が低下し、ケース内の空気中に含まれる水蒸気が水滴となって、ケース内壁部や可動接点、固定接点に結露が発生する。その後、非通電状態になると、ケース内が外部温度により次第に冷却されて部材表面に付着していた水滴が凍る。これが氷結現象である。このような氷結現象は、特に樹脂部材と比べて熱伝導率が高い金属材によって形成される可動接点や固定接点の表面で頻繁に発生する。   In electromagnetic relays, in winter and cold seasons and other low ambient environment temperatures and places, icing may occur in a sealed case and cause contact failure. Here, the freezing phenomenon will be briefly described. By energizing the coil, heat is generated by the resistance component of the coil, which is transmitted to the bobbin and the contacts and terminals forming the energization path, and the temperature in the case rises. At this time, if the external temperature is low, a temperature difference occurs between the inside and outside of the case, so that convection of air containing water vapor occurs in the case. Then, the amount of saturated water vapor around the case inner wall portion decreases, and water vapor contained in the air in the case becomes water droplets, and condensation occurs on the case inner wall portion, the movable contact, and the fixed contact. Thereafter, when a non-energized state is established, the inside of the case is gradually cooled by the external temperature, and water droplets adhering to the member surface are frozen. This is the freezing phenomenon. Such an icing phenomenon frequently occurs particularly on the surface of a movable contact or a fixed contact formed by a metal material having a higher thermal conductivity than that of a resin member.

密閉状態のケース内で氷結が発生しないように対処したものとして、例えば特許文献1で開示された電磁継電器がある。この特許文献1で開示された電磁継電器では、ケースの内底部に、固定接点及び可動接点へ向かって流れる空気を遮断する遮断壁を設けて、固定接点及び可動接点の氷結を防止するようにしている。   For example, there is an electromagnetic relay disclosed in Patent Document 1 as a countermeasure against icing in the sealed case. In the electromagnetic relay disclosed in Patent Document 1, a blocking wall that blocks air flowing toward the fixed contact and the movable contact is provided on the inner bottom of the case so as to prevent icing of the fixed contact and the movable contact. Yes.

特開2007−323883号公報JP 2007-323883 A

しかしながら、特許文献1で開示された電磁継電器は、ケースの内底部に沿って流れる空気のみを遮断しており、例えばコイル近傍から固定接点及び可動接点へ向かって流れる対流に対しては対策がされておらず、氷結を防止する効果としては不十分であった。   However, the electromagnetic relay disclosed in Patent Document 1 blocks only the air flowing along the inner bottom of the case, and for example, measures are taken against convection flowing from the vicinity of the coil toward the fixed contact and the movable contact. It was not sufficient as an effect to prevent freezing.

本発明は、係る事情に鑑みてなされたものであり、固定接点及び可動接点への氷結の発生を低く抑えて、低温環境下での接点間の接触性能を向上させることができる電磁継電器を提供することを目的とする。   The present invention has been made in view of such circumstances, and provides an electromagnetic relay capable of improving the contact performance between contacts in a low-temperature environment while suppressing the occurrence of freezing on the fixed contact and the movable contact. The purpose is to do.

本発明の電磁継電器は、巻回部と該巻回部の両端に延設した顎部を有するボビンと、前記ボビンの前記巻回部に巻回されたコイルと、前記ボビンに装着された鉄心と、ヒンジバネによって揺動自在に支承され、前記コイルに通電することにより前記鉄心の一端に磁気吸着される接極子と、前記接極子が揺動することにより固定接点に対して接触あるいは離間する可動接点と、前記各部を包含するケースと、を備えた電磁継電器であって、前記ボビンの顎部を前記ケースの側壁近傍まで延設して、前記コイルが存在する空間と前記固定接点及び前記可動接点が存在する空間とを分離するように構成し、前記ボビンの顎部を前記ケースの側壁近傍まで延設した後、前記固定接点及び前記可動接点が存在する空間の方向へ更に延設した。 An electromagnetic relay according to the present invention includes a bobbin having a winding part and a jaw part extending at both ends of the winding part, a coil wound around the winding part of the bobbin, and an iron core attached to the bobbin. And an armature that is swingably supported by a hinge spring and is magnetically attracted to one end of the iron core by energizing the coil, and a movable armature that contacts or separates from a fixed contact when the armature swings. An electromagnetic relay comprising a contact and a case including the respective parts, wherein the jaw portion of the bobbin extends to the vicinity of the side wall of the case, the space where the coil exists, the fixed contact, and the movable The bobbin jaw is extended to the vicinity of the side wall of the case, and further extended in the direction of the space where the fixed contact and the movable contact exist.

上記構成によれば、コイルが存在する空間と固定接点及び可動接点が存在する空間とを分離したので、コイル近傍から固定接点及び可動接点へ向かう対流が少なくなり、固定接点及び可動接点への氷結の発生を低く抑えることができ、低温環境下での接点間の接触性能の向上が図れる。また、コイル近傍から固定接点及び可動接点へ向かう対流を更に少なくできる。 According to the above configuration, since the space where the coil exists and the space where the fixed contact and the movable contact exist are separated, convection from the vicinity of the coil to the fixed contact and the movable contact is reduced, and icing to the fixed contact and the movable contact occurs. Can be kept low, and the contact performance between the contacts in a low temperature environment can be improved. Further, convection from the vicinity of the coil toward the fixed contact and the movable contact can be further reduced.

本発明の電磁継電器は、巻回部と該巻回部の両端に延設した顎部を有するボビンと、前記ボビンの前記巻回部に巻回されたコイルと、前記ボビンに装着された鉄心と、ヒンジバネによって揺動自在に支承され、前記コイルに通電することにより前記鉄心の一端に磁気吸着される接極子と、前記接極子が揺動することにより固定接点に対して接触あるいは離間する可動接点と、前記各部を包含するケースと、を備えた電磁継電器であって、前記ボビンの顎部を前記ケースの側壁近傍まで延設して、前記コイルが存在する空間と前記固定接点及び前記可動接点が存在する空間とを分離するように構成し、前記ボビンの顎部を前記ケースの側壁近傍まで延設した後、前記コイルが存在する空間の方向へ更に延設した。 An electromagnetic relay according to the present invention includes a bobbin having a winding part and a jaw part extending at both ends of the winding part, a coil wound around the winding part of the bobbin, and an iron core attached to the bobbin. And an armature that is swingably supported by a hinge spring and is magnetically attracted to one end of the iron core by energizing the coil, and a movable armature that contacts or separates from a fixed contact when the armature swings. An electromagnetic relay comprising a contact and a case including the respective parts, wherein the jaw portion of the bobbin extends to the vicinity of the side wall of the case, the space where the coil exists, the fixed contact, and the movable The bobbin jaw portion is extended to the vicinity of the side wall of the case, and then further extended in the direction of the space where the coil exists.

上記構成によれば、コイルが存在する空間と固定接点及び可動接点が存在する空間とを分離したので、コイル近傍から固定接点及び可動接点へ向かう対流が少なくなり、固定接点及び可動接点への氷結の発生を低く抑えることができ、低温環境下での接点間の接触性能の向上が図れる。また、コイル近傍から固定接点及び可動接点へ向かう対流を更に少なくできる。 According to the above configuration, since the space where the coil exists and the space where the fixed contact and the movable contact exist are separated, convection from the vicinity of the coil to the fixed contact and the movable contact is reduced, and icing to the fixed contact and the movable contact occurs. Can be kept low, and the contact performance between the contacts in a low temperature environment can be improved. Further, convection from the vicinity of the coil toward the fixed contact and the movable contact can be further reduced.

また、上記構成において、前記ボビンの顎部を前記ケースの側壁近傍まで延設して得られた延設部に対応させて、前記ケースの側壁に突出部を設けた。   Further, in the above configuration, a protrusion is provided on the side wall of the case so as to correspond to the extended portion obtained by extending the jaw portion of the bobbin to the vicinity of the side wall of the case.

上記構成によれば、コイル近傍から固定接点及び可動接点へ向かう対流を更に少なくできる。   According to the above configuration, convection from the vicinity of the coil toward the fixed contact and the movable contact can be further reduced.

本発明は、ボビンの顎部をケースの側壁近傍まで延設して、コイルが存在する空間と固定接点及び可動接点が存在する空間とを分離するように構成したので、固定接点及び可動接点への氷結の発生を低く抑えて、低温環境下での接点間の接触性能を向上させることができる。   In the present invention, the jaw portion of the bobbin is extended to the vicinity of the side wall of the case so that the space in which the coil exists and the space in which the fixed contact and the movable contact exist are separated from each other. It is possible to improve the contact performance between the contacts in a low temperature environment by suppressing the occurrence of freezing.

本発明の一実施の形態に係る電磁継電器の縦断面図The longitudinal cross-sectional view of the electromagnetic relay which concerns on one embodiment of this invention 図1の電磁継電器の内部構造を示す斜視図The perspective view which shows the internal structure of the electromagnetic relay of FIG. 図1の電磁継電器のボビンの外観を示す斜視図The perspective view which shows the external appearance of the bobbin of the electromagnetic relay of FIG. 図1の電磁継電器において、ボビンとコイルを除く内部構造を示す斜視図The perspective view which shows the internal structure except a bobbin and a coil in the electromagnetic relay of FIG. 図1の電磁継電器の特徴部分であるボビンの下顎部近傍の構造を概略的に示す図The figure which shows schematically the structure of the lower jaw part vicinity of the bobbin which is the characteristic part of the electromagnetic relay of FIG. 図1の電磁継電器の特徴部分の他の形態1の構造を概略的に示す図The figure which shows schematically the structure of the other form 1 of the characteristic part of the electromagnetic relay of FIG. 図1の電磁継電器の特徴部分の他の形態2の構造を概略的に示す図The figure which shows schematically the structure of the other form 2 of the characteristic part of the electromagnetic relay of FIG. 図1の電磁継電器の特徴部分の他の形態3の構造を概略的に示す図The figure which shows schematically the structure of the other form 3 of the characteristic part of the electromagnetic relay of FIG.

以下、本発明を実施するための好適な実施の形態について、図面を参照して詳細に説明する。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described in detail with reference to the drawings.

図1は本発明の一実施の形態に係る電磁継電器の縦断面図、図2は図1の電磁継電器の内部構造を示す斜視図、図3は図1の電磁継電器のボビンの外観を示す斜視図、図4は図1の電磁継電器のボビンとコイルを除いた内部構造を示す斜視図である。   1 is a longitudinal sectional view of an electromagnetic relay according to an embodiment of the present invention, FIG. 2 is a perspective view showing an internal structure of the electromagnetic relay of FIG. 1, and FIG. 3 is a perspective view showing an external appearance of a bobbin of the electromagnetic relay of FIG. 4 and 4 are perspective views showing the internal structure of the electromagnetic relay of FIG. 1 excluding the bobbin and the coil.

図1〜図4において、本実施の形態の電磁継電器は、本体部2と、固定接点用端子3と、本体部2及び固定接点用端子3を内部に収納し、全体として略直方体の箱状に形成されたケース1とを備える。   1 to 4, the electromagnetic relay according to the present embodiment accommodates a main body 2, a fixed contact terminal 3, a main body 2 and a fixed contact terminal 3 inside, and has a substantially rectangular parallelepiped box shape as a whole. The case 1 is formed.

ケース1は、下面が開口した箱型の合成樹脂形成品からなるボディ4と、扁平な略矩形板状に形成されたベース5とから構成され、ボディ4をベース5に上方から被せて使用する。ベース5には、細長矩形状に貫通する貫通孔が、計4個(図中では5a,5bの2箇所のみ図示)配設されている。これら4個の貫通孔のうち、図示しない2個は、ベース5の左右方向中心部より左側寄りに、その長手方向を左右方向に向けて、奥行き方向に並設されている。図示している2個の貫通孔5a,5bは、ベース5の左右方向の略中心部と、中心部より右側寄りとに、それぞれ長手方向を奥行き方向に向けて配設されている。   The case 1 includes a body 4 made of a box-shaped synthetic resin-formed product having an open bottom surface and a base 5 formed in a flat, substantially rectangular plate shape, and is used by covering the body 4 from above. . The base 5 is provided with a total of four through-holes penetrating in an elongated rectangular shape (only two locations 5a and 5b are shown in the figure). Of these four through holes, two (not shown) are arranged side by side in the depth direction, with the longitudinal direction in the left-right direction, closer to the left side than the center portion in the left-right direction of the base 5. The two through-holes 5a and 5b shown in the figure are arranged at a substantially central portion in the left-right direction of the base 5 and closer to the right side than the central portion, with the longitudinal direction directed in the depth direction.

本体部2は、電磁石6と、継鉄7と、可動バネ8と、接極子9と、ボビン10と、可動接点用端子11と、一対のコイル端子12、13(コイル端子13は図2又は図3を参照)とから構成される。また、電磁石6は、ボビン10に巻回された励磁用のコイル14と、ボビン10の中心軸に沿って貫挿された鉄心15とから構成される。   The main body 2 includes an electromagnet 6, a yoke 7, a movable spring 8, an armature 9, a bobbin 10, a movable contact terminal 11, and a pair of coil terminals 12 and 13 (the coil terminal 13 is shown in FIG. (See FIG. 3). The electromagnet 6 includes an exciting coil 14 wound around the bobbin 10 and an iron core 15 inserted through the central axis of the bobbin 10.

ボビン10は、電気絶縁性を有する樹脂材料によって形成されており、図3に示すように、巻回部10aと、巻回部10aの上下端部に設けられた上顎部10b及び下顎部10cとを一体に備える。巻回部10aは、円筒形状に形成されており、その中心軸に沿って上下端部を貫通する貫通孔10dが設けられている。巻回部10aの外周面にはコイル14が巻回され、貫通孔10dには鉄心15が挿入される。   The bobbin 10 is formed of a resin material having electrical insulation, and as shown in FIG. 3, a winding portion 10a, and an upper jaw portion 10b and a lower jaw portion 10c provided at upper and lower ends of the winding portion 10a Is integrated. The winding portion 10a is formed in a cylindrical shape, and is provided with a through hole 10d that penetrates the upper and lower end portions along the central axis. A coil 14 is wound around the outer peripheral surface of the winding portion 10a, and an iron core 15 is inserted into the through hole 10d.

上顎部10bは、巻回部10aの上端部が、上から見て略コ字状に形成されてなり、そのコ字状の開口は右側に向いている。下顎部10cは、略断面コ字状に形成されており、側壁部10c(図3参照)は左右方向に対して胴部10aの中心よりも可動接点用端子11側寄りまで延設されている。また、下顎部10cの前端部10c(図3参照)はケース1の内側の側壁近傍まで延設されている。このようにボビン10の下顎部10cは、コイル14が存在する空間と可動接点20及び固定接点21が存在する空間とを分離する。 The upper jaw portion 10b is formed such that the upper end portion of the winding portion 10a is substantially U-shaped when viewed from above, and the U-shaped opening is directed to the right side. The lower jaw portion 10c has a substantially U-shaped cross section, and the side wall portion 10c 1 (see FIG. 3) extends from the center of the body portion 10a to the movable contact terminal 11 side in the left-right direction. Yes. Further, the front end portion 10c 2 (see FIG. 3) of the lower jaw portion 10c extends to the vicinity of the inner side wall of the case 1. Thus, the lower jaw portion 10c of the bobbin 10 separates the space where the coil 14 exists from the space where the movable contact 20 and the fixed contact 21 exist.

一対のコイル端子12、13は、導電性を有する略矩形板から形成され、その長手方向を上下方向に向けて、ボビン10の奥行き方向前端部に各々固定されている。コイル端子12、13の下端部に延設される端子片12a、13aは、ベース5に貫設されている先述の2個の挿通孔(図示せず)を通じて各々ケース1の外部へ突出する。コイル端子12、13の上端部には、コイル14の巻始め端と巻終わり端とが電気的に接続されている(何れも図示せず)。即ち、端子片12a、13aを通じてコイル14への給電が可能となる。   The pair of coil terminals 12 and 13 are formed of a substantially rectangular plate having conductivity, and are fixed to the front end portion in the depth direction of the bobbin 10 with the longitudinal direction thereof directed in the vertical direction. The terminal pieces 12 a and 13 a extending to the lower end portions of the coil terminals 12 and 13 respectively protrude to the outside of the case 1 through the two insertion holes (not shown) penetrating the base 5. The winding start end and the winding end end of the coil 14 are electrically connected to the upper ends of the coil terminals 12 and 13 (both not shown). That is, power can be supplied to the coil 14 through the terminal pieces 12a and 13a.

鉄心15は、円柱形状に形成され、その下端部には、円板形状に形成された顎部15aが備えられている。なお、顎部15aの外径寸法は、円柱形状の本体部の外径寸法より大きくなっている。   The iron core 15 is formed in a cylindrical shape, and a lower end portion thereof is provided with a jaw portion 15a formed in a disk shape. In addition, the outer diameter dimension of the jaw part 15a is larger than the outer diameter dimension of the cylindrical main body part.

継鉄7は、矩形板を長手方向略中央部で曲折させてなり、水平面に平行な横設部7aと、横設部7aの右端部から下方へ延びる起立部7bとから構成され、コイル14の周辺に磁束の磁路を形成する。横設部7aは、コ字型に形成される上顎部10bに右側方向より嵌合される。また、横設部7aには貫通穴7cが上下方向に貫設されており、ボビン10の貫通孔10dから上方に突出する鉄心15の上端部が、貫通穴7cにかしめ固定されることで、継鉄7は鉄心15に連結される。一方、鉄心15の下端部では、顎部15aがボビン10の下顎部10cの下面に当接しているので、継鉄7及び鉄心15がボビン10から抜け落ちることはない。起立部7bは、コイル14から離間して、鉄心15の中心軸と平行に配置されており、起立部7bの右側には、右側へ突出する複数の突部(図示せず)が設けられている。   The yoke 7 is formed by bending a rectangular plate at a substantially central portion in the longitudinal direction, and is composed of a lateral portion 7a parallel to the horizontal plane and an upright portion 7b extending downward from the right end portion of the lateral portion 7a. A magnetic path of magnetic flux is formed around The horizontal portion 7a is fitted to the upper jaw portion 10b formed in a U shape from the right side. Moreover, the through hole 7c is penetrated by the horizontal part 7a in the up-down direction, and the upper end part of the iron core 15 protruding upward from the through hole 10d of the bobbin 10 is caulked and fixed to the through hole 7c. The yoke 7 is connected to the iron core 15. On the other hand, at the lower end portion of the iron core 15, the jaw portion 15 a is in contact with the lower surface of the lower jaw portion 10 c of the bobbin 10, so that the yoke 7 and the iron core 15 do not fall out of the bobbin 10. The upright part 7b is spaced apart from the coil 14 and arranged in parallel with the central axis of the iron core 15. On the right side of the upright part 7b, a plurality of protrusions (not shown) projecting to the right side are provided. Yes.

可動バネ8は、銅板等の導電性薄板を略L字状に曲折させてなり、水平面に平行な作動部8aと、水平面の法線方向に平行な固定部8bと、作動部8a及び固定部8b間の曲折部分であるヒンジバネ部8cとから構成される。作動部8aは、左側方向に延出されてなり、作動部8a上面の右側寄りには、接極子9がかしめにより固定されている。作動部8aの左端部には上下方向に貫通する孔部が形成され、略球形状に形成された可動接点20が前記孔部にかしめ固定されており、可動接点20の上下方向の頂点部分は、各々後述の固定接点21に対向している。そして、固定部8bには、左右方向に貫通する複数の穴部(図示せず)が設けられており、可動接点用端子11とともに、前述の複数の突部を介して起立部7bの後面にかしめ固定される。このとき、作動部8aの左端部は、ボビン10の下顎部10cの右側開口より挿入される。   The movable spring 8 is formed by bending a conductive thin plate such as a copper plate into a substantially L shape, and an operating portion 8a parallel to the horizontal plane, a fixed portion 8b parallel to the normal direction of the horizontal plane, and the operating portion 8a and the fixed portion. It is comprised from the hinge spring part 8c which is a bending part between 8b. The operating portion 8a extends in the left direction, and an armature 9 is fixed by caulking near the right side of the upper surface of the operating portion 8a. A hole penetrating in the vertical direction is formed at the left end portion of the actuating portion 8a, and the movable contact 20 formed in a substantially spherical shape is caulked and fixed to the hole, and the apex portion in the vertical direction of the movable contact 20 is , Each facing a fixed contact 21 described later. The fixed portion 8b is provided with a plurality of holes (not shown) penetrating in the left-right direction, together with the movable contact terminal 11, on the rear surface of the standing portion 7b via the plurality of protrusions. It is fixed by caulking. At this time, the left end portion of the operating portion 8a is inserted from the right opening of the lower jaw portion 10c of the bobbin 10.

可動接点用端子11は、導電性材料によって矩形板状に形成され、可動バネ8を介して可動接点20と電気的に接続されている。可動接点用端子11は、先述の様に可動バネ8とともに起立部7bの右面にかしめ固定されている。可動接点用端子11の下端部に配設される端子片11aは、ベース5の貫通孔5bを通じてケース1の外部へ突出する。   The movable contact terminal 11 is formed in a rectangular plate shape by a conductive material, and is electrically connected to the movable contact 20 via the movable spring 8. The movable contact terminal 11 is caulked and fixed to the right surface of the standing portion 7b together with the movable spring 8 as described above. The terminal piece 11 a disposed at the lower end of the movable contact terminal 11 protrudes outside the case 1 through the through hole 5 b of the base 5.

接極子9は、磁性材料によって略矩形板状に形成されてなり、作動部8a上面の右側寄りにかしめ固定されている。また、接極子9の右端部9aは、奥行き方向に亘って起立部7bの下端部7dに当接している。つまり、継鉄7は、可動バネ8を介して接極子9を上下方向に対して揺動自在に支持している。また、電磁石6、継鉄7、可動バネ8、接極子9及び可動接点用端子11は互いに協働して、コイル14による磁気回路を形成する。   The armature 9 is formed in a substantially rectangular plate shape with a magnetic material, and is fixed by caulking to the right side of the upper surface of the operating portion 8a. Further, the right end portion 9a of the armature 9 is in contact with the lower end portion 7d of the standing portion 7b over the depth direction. That is, the yoke 7 supports the armature 9 via the movable spring 8 so as to be swingable in the vertical direction. Further, the electromagnet 6, the yoke 7, the movable spring 8, the armature 9 and the movable contact terminal 11 cooperate with each other to form a magnetic circuit by the coil 14.

固定接点用端子3は、導電性材料によって帯状に形成され、一端部に固定接点21を有し、他端部に端子片3aを有する。固定接点用端子3の前記一端部と前記他端部とを連結する連結部3bは、図4に示すように、ボビン10を挟む略V字形状に形成されている。端子片3aは、連結部3bのV字状の2つの先端部分の各々から下方へ直角に曲折されている。   The fixed contact terminal 3 is formed in a strip shape by a conductive material, has a fixed contact 21 at one end, and a terminal piece 3a at the other end. As shown in FIG. 4, the connecting portion 3 b that connects the one end portion and the other end portion of the fixed contact terminal 3 is formed in a substantially V shape sandwiching the bobbin 10. The terminal piece 3a is bent at a right angle downward from each of the two V-shaped tip portions of the connecting portion 3b.

固定接点21は、略円板形状に形成された顎部と、該顎部の中心部から上方に突出する突起部とから構成される。固定接点用端子3の前記一端部には、上下方向に貫設する孔部が設けられており、固定接点21の前記頭部を下方に向けて、前記孔部に前記突起部をかしめ固定することで、固定接点21が固定接点用端子3の前記一端部に固着されている。そして、前記顎部は、可動バネ8の可動接点20の上方頂部と対向して配設されている。一方、端子片3aは、ベース5の貫通孔5aを通じてケース1の外部へ突出する。   The fixed contact 21 includes a jaw part formed in a substantially disc shape and a protrusion part that protrudes upward from the center part of the jaw part. The one end portion of the fixed contact terminal 3 is provided with a hole portion penetrating in the vertical direction, and the projection portion is caulked and fixed to the hole portion with the head portion of the fixed contact 21 facing downward. Thus, the fixed contact 21 is fixed to the one end of the fixed contact terminal 3. The jaw portion is disposed opposite to the top of the movable contact 20 of the movable spring 8. On the other hand, the terminal piece 3 a protrudes outside the case 1 through the through hole 5 a of the base 5.

次に、本実施の形態の電磁継電器の基本動作について説明する。コイル14に電流が流れていない場合、電磁石6は非励磁状態であり、接極子9は鉄心15の顎部15aから離間した位置にある。即ち、可動接点20は、固定接点21から離れており、接点は開いた状態にある。この状態からコイル端子12、13を通じてコイル14に電流が流れると、電磁石6は励磁され、接極子9は、電磁石6の吸引力により可動バネ8の弾性復帰力に抗して、右端部9aを支点に上方へ変位し、鉄心15の顎部15aに吸着する。この吸着動作に伴い、可動接点20は、可動バネ8の作動部8aを介して、接極子9と一体となって上方へ変位する。即ち、可動接点20が固定接点21と接触して、接点は、閉じた状態となる。   Next, the basic operation of the electromagnetic relay according to the present embodiment will be described. When no current flows through the coil 14, the electromagnet 6 is in a non-excited state, and the armature 9 is located away from the jaw portion 15 a of the iron core 15. That is, the movable contact 20 is separated from the fixed contact 21 and the contact is in an open state. When current flows through the coil terminals 12 and 13 from this state to the coil 14, the electromagnet 6 is excited, and the armature 9 pushes the right end portion 9 a against the elastic return force of the movable spring 8 by the attractive force of the electromagnet 6. It is displaced upward to the fulcrum and is attracted to the jaw 15a of the iron core 15. With this suction operation, the movable contact 20 is displaced upward together with the armature 9 via the operating portion 8 a of the movable spring 8. That is, the movable contact 20 comes into contact with the fixed contact 21 and the contact is closed.

その後、コイル14に流れる電流が切れると、電磁石6は消磁されて、電磁石6の吸引力は消失するので、接極子9は、可動バネ8の弾性復帰力により、前記吸着方向と反対の下方向へ変位し、鉄心15の顎部15aから離間する。この離間動作に伴い、可動接点20は、可動バネ8の作動部8aを介して、接極子9と一体となって下方へ変位する。即ち、可動接点20が再び固定接点21から離れて、接点は開いた状態となる。   Thereafter, when the current flowing through the coil 14 is cut off, the electromagnet 6 is demagnetized and the attractive force of the electromagnet 6 disappears, so that the armature 9 is moved downward in the direction opposite to the attracting direction by the elastic return force of the movable spring 8. To move away from the jaw 15a of the iron core 15. Along with this separation operation, the movable contact 20 is displaced downward together with the armature 9 via the operating portion 8 a of the movable spring 8. That is, the movable contact 20 is separated from the fixed contact 21 again, and the contact is opened.

このように本実施の形態の電磁継電器は、電磁石6の励磁と消磁との繰り返しにより、可動接点20が固定接点21に対して接触・離間することで開閉動作を行う。   As described above, the electromagnetic relay according to the present embodiment performs an opening / closing operation by moving the movable contact 20 to / from the fixed contact 21 by repeating the excitation and demagnetization of the electromagnet 6.

また、本実施の形態の電磁継電器は、ボビン10の下顎部10cがケース1の内側の側壁近傍まで延設されて、コイル14が存在する空間と可動接点20及び固定接点21が存在する空間とを分離するように構成されている。図5は、本実施の形態の電磁継電器の特徴部分であるボビン10の下顎部10c近傍の構造を概略的に示したものである。ケース1の内側の側壁とボビン10の下顎部10cの前端部10cとの間隔が狭いので、コイル14の発熱によってケース1内で水蒸気を含んだ空気の対流が生じても、可動接点20及び固定接点21へは殆ど向かわない。これにより、可動接点20及び固定接点21への氷結の発生が殆ど起らない。 In the electromagnetic relay of the present embodiment, the lower jaw portion 10c of the bobbin 10 extends to the vicinity of the inner side wall of the case 1, and the space where the coil 14 exists and the space where the movable contact 20 and the fixed contact 21 exist. Are configured to separate. FIG. 5 schematically shows a structure in the vicinity of the lower jaw portion 10c of the bobbin 10, which is a characteristic portion of the electromagnetic relay according to the present embodiment. The spacing between the front end portion 10c 2 of the lower jaw portion 10c of the inner side wall and the bobbin 10 of the case 1 is small, even if convection air containing water vapor in the case 1 by the heat generation of the coil 14, the movable contact 20 and It hardly goes to the fixed contact 21. As a result, icing on the movable contact 20 and the fixed contact 21 hardly occurs.

このように本実施の形態の電磁継電器によれば、巻回部10aと該巻回部10aの上下端部に設けられた上顎部10b及び下顎部10cとを一体に備えるボビン10と、ボビン10の巻回部10aに巻回されたコイル14と、ボビン10に装着された鉄心15と、可動バネ8によって揺動自在に支承され、コイル14に通電することにより鉄心15の一端に磁気吸着される接極子9と、接極子9が揺動することにより固定接点21に対して接触あるいは離間する可動接点20と、各部を包含するケース1と、を備え、ボビン10の下顎部10cをケース1の内側の側壁近傍まで延設して、コイル14が存在する空間と可動接点20及び固定接点21が存在する空間とを分離するように構成したので、コイル14の近傍から可動接点20及び固定接点21へ向かう対流が少なくなり、可動接点20及び固定接点21への氷結の発生を低く抑えることができ、低温環境下での接点間の接触性能の向上が図れる。   Thus, according to the electromagnetic relay of the present embodiment, the bobbin 10 integrally including the winding portion 10a and the upper jaw portion 10b and the lower jaw portion 10c provided at the upper and lower ends of the winding portion 10a, and the bobbin 10 The coil 14 wound around the winding portion 10a, the iron core 15 attached to the bobbin 10, and the movable spring 8 are supported so as to be swingable. When the coil 14 is energized, it is magnetically attracted to one end of the iron core 15. The armature 9, the movable contact 20 that contacts or separates from the fixed contact 21 when the armature 9 swings, and the case 1 that includes each part, and the lower jaw portion 10 c of the bobbin 10 is the case 1. Since the space where the coil 14 exists and the space where the movable contact 20 and the fixed contact 21 exist are separated from each other, the movable contact 20 and the fixed contact 21 are fixed from the vicinity of the coil 14. Convection is reduced toward the contact 21, it is possible to suppress the occurrence of icing on the movable contact 20 and fixed contact 21 low, thereby improving the contact efficiency between the contacts in a low-temperature environment.

なお、本実施の形態の電磁継電器では、ボビン10の下顎部10cをケース1の内側の側壁近傍まで延設したが、図6〜図8に示すような構造としてもよい。   In the electromagnetic relay according to the present embodiment, the lower jaw portion 10c of the bobbin 10 is extended to the vicinity of the inner side wall of the case 1, but a structure as shown in FIGS.

(1)図6に示す形態(他の形態1)は、ボビン10の下顎部10cをケース1の内側の側壁近傍まで延設した後、可動接点20及び固定接点21が存在する空間の方向へ更に延設したものである。ボビン10の下顎部10cの延設部分とケース1の内側の側壁との間で、ケース1への結露50が促進される。 (1) In the form shown in FIG. 6 (other form 1), after extending the lower jaw portion 10c of the bobbin 10 to the vicinity of the inner side wall of the case 1, the direction of the space where the movable contact 20 and the fixed contact 21 are present. Furthermore, it is extended. Condensation 50 on the case 1 is promoted between the extended portion of the lower jaw portion 10 c of the bobbin 10 and the inner side wall of the case 1.

(2)図7に示す形態(他の形態2)は、ボビン10の下顎部10cをケース1の内側の側壁近傍まで延設した後、コイル14が存在する空間の方向へ更に延設したものである。この形態においても、ボビン10の下顎部10cの延設部分とケース1の内側の側壁との間で、ケース1への結露50が促進される。 (2) In the form shown in FIG. 7 (other form 2), the lower jaw part 10c of the bobbin 10 is extended to the vicinity of the inner side wall of the case 1, and then further extended in the direction of the space where the coil 14 exists. It is. Also in this form, dew condensation 50 on the case 1 is promoted between the extended portion of the lower jaw portion 10c of the bobbin 10 and the inner side wall of the case 1.

(3)図8に示す形態(他の形態3)は、ボビン10の下顎部10cをケース1の内側の側壁近傍まで延設して得られた延設部に対応させて、ケース1の内側の側壁に突出部30を設けたものである。 (3) In the form shown in FIG. 8 (other form 3), the inner side of the case 1 is made to correspond to the extended part obtained by extending the lower jaw part 10c of the bobbin 10 to the vicinity of the inner side wall of the case 1. Protrusions 30 are provided on the side walls.

上記(1)、(2)又は(3)の構造とした場合、コイル14の近傍から可動接点20及び固定接点21へ向かう対流を更に少なくできる。なお、(3)の場合は(1)と組み合わせることもできる。   In the case of the structure (1), (2) or (3), the convection from the vicinity of the coil 14 toward the movable contact 20 and the fixed contact 21 can be further reduced. In the case of (3), it can be combined with (1).

なお、本発明は上記実施の形態に限定されず、本発明の目的の範囲を逸脱しない限りにおいて適宜変更して実施することが可能である。   It should be noted that the present invention is not limited to the above embodiment, and can be implemented with appropriate modifications without departing from the scope of the object of the present invention.

1 ケース
2 本体部
3 固定接点用端子
3a 端子片
3b 連結部
4 ボディ
5 ベース
5a、5b 貫通孔
6 電磁石
7 継鉄
7a 横設部
7b 起立部
7c 貫通穴
8 可動バネ
8a 作動部
8b 固定部
8c ヒンジバネ部
9 接極子
9a 右端部
10 ボビン
10a 巻回部
10b 上顎部
10c 下顎部
10d 貫通孔
10c 側壁部
10c 前端部
11 可動接点用端子
11a 端子片
12、13 コイル端子
12a、13a 端子片
14 コイル
15 鉄心
15a 顎部
20 可動接点
21 固定接点
30 突出部
DESCRIPTION OF SYMBOLS 1 Case 2 Main-body part 3 Fixed contact terminal 3a Terminal piece 3b Connection part 4 Body 5 Base 5a, 5b Through-hole 6 Electromagnet 7 Relay 7a Lateral part 7b Standing part 7c Through-hole 8 Movable spring 8a Actuation part 8b Fixed part 8c Hinge spring portion 9 Armature 9a Right end portion 10 Bobbin 10a Winding portion 10b Upper jaw portion 10c Lower jaw portion 10d Through hole 10c 1 Side wall portion 10c 2 Front end portion 11 Movable contact terminal 11a Terminal piece 12, 13 Coil terminal 12a, 13a Terminal piece 14 Coil 15 Iron core 15a Jaw portion 20 Movable contact 21 Fixed contact 30 Projection

Claims (3)

巻回部と該巻回部の両端に延設した顎部を有するボビンと、
前記ボビンの前記巻回部に巻回されたコイルと、
前記ボビンに装着された鉄心と、ヒンジバネによって揺動自在に支承され、前記コイルに通電することにより前記鉄心の一端に磁気吸着される接極子と、
前記接極子が揺動することにより固定接点に対して接触あるいは離間する可動接点と、
前記各部を包含するケースと、を備えた電磁継電器であって、
前記ボビンの顎部を前記ケースの側壁近傍まで延設して、前記コイルが存在する空間と前記固定接点及び前記可動接点が存在する空間とを分離するように構成し、
前記ボビンの顎部を前記ケースの側壁近傍まで延設した後、前記固定接点及び前記可動接点が存在する空間の方向へ更に延設した電磁継電器。
A bobbin having a wound part and a jaw part extending at both ends of the wound part;
A coil wound around the winding portion of the bobbin;
An iron core mounted on the bobbin, and an armature that is swingably supported by a hinge spring and is magnetically attracted to one end of the iron core by energizing the coil;
A movable contact that contacts or separates from a fixed contact by swinging the armature;
A case including the above-described parts, and an electromagnetic relay comprising:
The bobbin jaw is extended to the vicinity of the side wall of the case, and the space in which the coil exists is separated from the space in which the fixed contact and the movable contact exist,
After extending the jaws of the bobbin to the vicinity of the side walls of the said case further extended electrodeposition磁継collector in the direction of the space in which the fixed contact and the movable contact is present.
巻回部と該巻回部の両端に延設した顎部を有するボビンと、
前記ボビンの前記巻回部に巻回されたコイルと、
前記ボビンに装着された鉄心と、ヒンジバネによって揺動自在に支承され、前記コイルに通電することにより前記鉄心の一端に磁気吸着される接極子と、
前記接極子が揺動することにより固定接点に対して接触あるいは離間する可動接点と、
前記各部を包含するケースと、を備えた電磁継電器であって、
前記ボビンの顎部を前記ケースの側壁近傍まで延設して、前記コイルが存在する空間と前記固定接点及び前記可動接点が存在する空間とを分離するように構成し、
前記ボビンの顎部を前記ケースの側壁近傍まで延設した後、前記コイルが存在する空間の方向へ更に延設した電磁継電器。
A bobbin having a wound part and a jaw part extending at both ends of the wound part;
A coil wound around the winding portion of the bobbin;
An iron core mounted on the bobbin, and an armature that is swingably supported by a hinge spring and is magnetically attracted to one end of the iron core by energizing the coil;
A movable contact that contacts or separates from a fixed contact by swinging the armature;
A case including the above-described parts, and an electromagnetic relay comprising:
The bobbin jaw is extended to the vicinity of the side wall of the case, and the space in which the coil exists is separated from the space in which the fixed contact and the movable contact exist,
After extending the jaws of the bobbin to the vicinity of the side walls of the said case further extended electrodeposition磁継collector in the direction of the space in which the coil is present.
前記ボビンの顎部を前記ケースの側壁近傍まで延設して得られた延設部に対応させて、前記ケースの側壁に突出部を設けた請求項1又は請求項に記載の電磁継電器。 Said jaw portion of the bobbin so as to correspond to the extending portion obtained by extending to the vicinity of the side walls of the said case, the electromagnetic relay according to claim 1 or claim 2 provided with a protrusion on the side wall of the case.
JP2009160772A 2009-06-23 2009-07-07 Electromagnetic relay Active JP5366315B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2009160772A JP5366315B2 (en) 2009-07-07 2009-07-07 Electromagnetic relay
PCT/JP2010/060392 WO2010150712A1 (en) 2009-06-23 2010-06-18 Electromagnetic relay
CA2766036A CA2766036C (en) 2009-06-23 2010-06-18 Electromagnetic relay
US13/379,672 US8471656B2 (en) 2009-06-23 2010-06-18 Electromagnetic relay
EP16163216.1A EP3059754B1 (en) 2009-06-23 2010-06-18 Electromagnetic relay
EP10792030.8A EP2447976B1 (en) 2009-06-23 2010-06-18 Electromagnetic relay
US13/896,758 US8912869B2 (en) 2009-06-23 2013-05-17 Electromagnetic relay

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JPS6073149U (en) * 1983-10-27 1985-05-23 富士通株式会社 electromagnetic relay
JPH03127753U (en) * 1990-02-23 1991-12-24
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JP4292723B2 (en) * 2001-02-15 2009-07-08 株式会社デンソー Electromagnetic relay
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