JP4374810B2 - Manufacturing method of electromagnetic relay - Google Patents

Manufacturing method of electromagnetic relay Download PDF

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Publication number
JP4374810B2
JP4374810B2 JP2001242670A JP2001242670A JP4374810B2 JP 4374810 B2 JP4374810 B2 JP 4374810B2 JP 2001242670 A JP2001242670 A JP 2001242670A JP 2001242670 A JP2001242670 A JP 2001242670A JP 4374810 B2 JP4374810 B2 JP 4374810B2
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Japan
Prior art keywords
contact
tool
hole
movable
electromagnetic
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JP2001242670A
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Japanese (ja)
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JP2003059381A (en
Inventor
秀昭 杉山
秀樹 泊
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Denso Corp
Denso Electronics Corp
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Denso Corp
Anden Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、電気回路の開閉を行う電磁継電器の製造方法に関するものである。
【0002】
【従来の技術】
近年、電磁継電器の小型化のニーズが高まってきており、それに対応するには、構成部品の加工精度および組立精度の向上が不可欠である。そして、特許第2892230号公報には、その組立精度のうち固定接点と可動接点間の対向間隔(以下、接点間隔という)を精度よく設定することを目的とした電磁継電器が示されている。
【0003】
上記公報に記載の電磁継電器は、図5に示すように、固定接点10の保持部材18に透孔18cを形成し、透孔18cを塑性変形させることにより固定接点10を可動接点11側に移動させて接点間隔Lを設定するようにしており、塑性変形量を管理することにより接点間隔Lを高精度に設定することができる。
【0004】
【発明が解決しようとする課題】
しかしながら、上記公報に記載の電磁継電器は、保持部材18の幅方向X(固定接点10の移動方向Yに対して垂直方向、且つ保持部材18の厚み方向に対して垂直方向)両側から工具により荷重を加えて透孔18cを変形させるため、保持部材18の幅方向X両側に工具挿入スペースを確保する必要があり、工具挿入スペースを確保できない電磁継電器には上記設定方法を適用できないという問題があった。
【0005】
また、透孔18cを変形させる際、保持部材18に加わる荷重の方向Xに対して固定接点10は略垂直方向に移動するため、換言すると両方向が一致しないため、固定接点10の移動方向の制御が難しく、固定接点10が移動する際に固定接点10が傾きやすくなり、従って、両接点10、11の平行度が狂いやすいという問題があった。
【0006】
本発明は上記の点に鑑みてなされたもので、保持部材に形成された透孔を変形させることにより固定接点を移動させて接点間隔を設定する電磁継電器の製造方法において、保持部材の幅方向両側に工具挿入スペースを確保できない電磁継電器においても、透孔を変形させて接点間隔を設定可能にすることを目的とする。
【0007】
【課題を解決するための手段】
上記目的を達成するため、請求項1に記載の発明では、通電時に電磁力を発生する電磁コイル(13)と、電磁コイル(13)の電磁力により駆動される可動接点(11)と、可動接点(11)に対向して配置されて、可動接点(11)が接離する固定接点(10)と、固定接点(10)を所定位置に保持する板状の保持部材(18)とを備える電磁継電器を準備し、保持部材(18)に形成された透孔(18c)を変形させることにより、両接点(10、11)間の接点間隔(L)の方向(C)に固定接点(10)を移動させて、接点間隔(L)を設定する電磁継電器の製造方法において、透孔(18c)に挿入される工具(20)により、透孔(18c)を接点間隔方向(C)に押し拡げて固定接点(10)を移動させることを特徴とする。
【0008】
これによると、透孔に挿入される工具を用いるため、保持部材の幅方向両側に工具挿入スペースを確保できない電磁継電器においても、透孔を変形させて接点間隔を精度よく設定することができる。
【0009】
また、保持部材の幅方向両側には工具挿入スペースを必要とせず、工具を透孔に挿入するスペースがあればよいため、多連に配置される電磁継電器の省スペース化が図りやすくなる。
【0010】
また、透孔を接点間隔方向に押し拡げて固定接点を移動させるため、工具から保持部材に加わる荷重の方向が固定接点の移動方向と略一致し、従って、固定接点が移動する際の固定接点の傾きが少なくなり、固定接点移動後の両接点の平行度の狂いを少なくすることができる。
【0011】
なお、請求項1の発明は、請求項2に記載の発明のように、工具(20)において透孔(18c)の内縁部に当接する面のうち固定接点(10)側の面(20a)を、接点間隔方向(C)に対して傾斜させ、工具(20)において透孔(18c)の内縁部に当接する面のうち反固定接点側の面(20b)を、接点間隔方向(C)に対して垂直とし、工具(20)を、接点間隔方向(C)に対して垂直方向に移動させることにより実施することができる。
【0012】
請求項3に記載の発明では、保持部材(18)における工具(20)の移動方向両面を治具(21、22)により挟んだ状態で、工具(20)を移動させることを特徴とする。
【0013】
ところで、請求項2の発明の場合、工具から保持部材に加わる荷重の分力により、保持部材が工具の移動方向に曲げられてしまう。これに対し、請求項3の発明によれば、治具により工具の移動方向への保持部材の曲がりが防止されるため、固定接点移動後の両接点の平行度の狂いをさらに少なくすることができる。
【0014】
請求項4に記載の発明では、電磁コイル(13)内に配置されて磁路を形成する固定鉄心(14)と、固定鉄心(14)に対向して配置され、電磁コイル(13)の電磁力により固定鉄心(14)側に吸引される可動鉄片(15)とを備え、可動鉄片(15)とともに可動接点(11)が駆動される電磁継電器の製造方法であって、固定鉄心(14)と可動鉄片(15)との間に所定厚みのゲージ(30)を配置して可動鉄片(15)を吸引した状態で、工具(20)により両接点(10、11)が接触する位置まで固定接点(10)を移動させることを特徴とする。
【0015】
これによると、エアギャップが精度よく設定されるため、実使用時の両接点の接触圧を精度よく設定することができる。
【0016】
なお、上記各手段の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものである。
【0017】
【発明の実施の形態】
(第1実施形態)
図1ないし図3は本発明の第1実施形態を示すもので、図1は電磁継電器の断面図、図2は図1のA部の拡大図である。また、図3は接点間隔の設定工程を示すもので、図1のB−B線に沿う断面図である。
【0018】
図1ないし図3において、10は固定接点であり、11は固定接点10に対して可動する可動接点である。この可動接点11が装着された板バネ12は、可動接点11が固定接点10から離れる向きの弾性力を可動接点11に作用させるとともに、電気回路の一部を兼ねる。
【0019】
また、通電時に電磁力を発生する電磁コイル13(以下単にコイルという)およびコイル13内に配置されて磁束の磁路を形成する固定鉄心14を有し、板バネ12には固定鉄心14側に吸引される可動鉄片15が装着されている。なお、可動接点11および可動鉄片15は、かしめによって板バネ12に固定されている。ヨーク16は、樹脂製のベース17に固定されてコイル13及び板バネ12を保持すると共に、コイル13により誘起された磁束の磁路を構成する。
【0020】
ベース17に固定された金属製板状の保持部材18の一端側は、コイル13等を覆うカバー19内に位置し、このカバー19内に位置する部分はL字状に曲げられて第1板部18aと第2板部18bが形成されている。第1板部18aは固定接点10と可動接点11の接点間隔方向Cに延びており、第2板部18bは第1板部18aの端部から接点間隔方向Cに対して垂直方向に延びている。そして、第2板部18bには固定接点10がかしめによって固定されており、保持部材18は電気回路の一部を兼ねる。
【0021】
第1板部18aには、その厚み方向に貫通した透孔18cが形成されており、この透孔18cの内縁部には、接点間隔方向Cに対して垂直方向に延びると共に、接点間隔方向Cに所定の間隔を持って位置する2つの加工基準面18d、18eが形成されている。以下、固定接点10側の加工基準面18dを第1加工基準面、反固定接点側の加工基準面18eを第2加工基準面という。
【0022】
上記構成になる電磁継電器は、コイル13に通電すると、その電磁吸引力により可動鉄片15が固定鉄心14に吸引され、可動接点11が固定接点10に当接して電気回路が閉じる。
【0023】
次に、両接点10、11間の接点間隔Lの設定方法について説明する。
【0024】
なお、接点間隔Lの設定は、カバー19が装着されていない状態で行われる。また、接点間隔Lの設定時には、工具20、受け治具21、押さえ治具22、およびばね23が用いられる。
【0025】
工具20は、保持部材18の透孔18cに挿入されて透孔18cを変形させるもので、透孔18cの第1加工基準面18dに当接する第1平面20aは、接点間隔方向Cに対して傾斜した面となっており、透孔18cの第2加工基準面18eに当接する第2平面20bは、接点間隔方向Cに対して垂直な面となっている。また、工具20は、図示しない駆動手段によって、接点間隔方向Cに対して垂直方向(換言すると、第1板部18aの厚み方向)に移動されるようになっている。
【0026】
受け治具21および押さえ治具22は、第1板部18aにおける透孔18cの周囲を工具20の移動方向両側(換言すると、第1板部18aの厚み方向両側)から挟み込んで保持するもので、受け治具21および押さえ治具22の中心部には貫通穴21a、22aが形成されている。
【0027】
接点間隔Lの設定に際しては、まず、受け治具21および押さえ治具22により第1板部18aを挟み込み、次いで工具20を図3の上方から下方に向かって移動させて、工具20を、押さえ治具22の貫通穴22a、第1板部18aの透孔18c、および受け治具21の貫通穴21aに順に挿入する。
【0028】
そして、工具20の第1、第2平面20a、20bが、透孔18cの第1、第2加工基準面18d、18eに当接した後、工具20をさらに移動させると、第1、第2加工基準面18d、18e間の間隔が拡がるように透孔18cが押し拡げられる。この変形に伴い、自由端である第2板部18bが可動接点11側に移動し、従って固定接点10が可動接点11側に移動する。この固定接点10の移動により接点間隔Lが狭まり、接点間隔Lが所定の値になった時点で工具20を停止する。
【0029】
本実施形態によると、透孔18cに挿入される工具20を用いるため、保持部材18の幅方向X両側に工具挿入スペースを確保できない電磁継電器においても、透孔18cを変形させて接点間隔Lを精度よく設定することができる。
【0030】
また、透孔18cを接点間隔方向Cに押し拡げて固定接点10を移動させるため、工具から第1板部18aに加わる荷重の方向が固定接点10の移動方向と略一致する。従って、固定接点10が移動する際の固定接点10の傾きが少なくなり、固定接点移動後の両接点10、11の平行度の狂いを少なくすることができる。
【0031】
また、第1板部18aを工具20の移動方向に曲げようとする力が、工具20から第1板部18aに作用するが、受け治具21および押さえ治具22により第1板部18aの曲がりが防止されるため、固定接点移動後の両接点10、11の平行度の狂いをさらに少なくすることができる。
【0032】
(第2実施形態)
図4は第2実施形態を示すもので、本実施形態では、固定鉄心14と可動鉄片15との間にゲージ30を配置して、接点間隔Lの設定を行うようにしている。なお、その他の点は第1実施形態と共通する。
【0033】
図4において、接点間隔Lの設定に際しては、まず、エアギャップを確保するためのゲージ30を固定鉄心14と可動鉄片15との間に挿入した状態でコイル13に通電し、可動鉄片15を固定鉄心14側に吸引する。次いで、可動鉄片15を吸引した状態で、第1実施形態と同様の方法で固定接点10を可動接点11側に移動させ、両接点10、11の導通または接触を確認できた時点で、工具20を停止する。
【0034】
これによると、エアギャップが精度よく設定されるため、実使用時の両接点10、11の接触圧を精度よく設定することができる。
【0035】
(他の実施形態)
上記各実施形態において、接点間隔Lの設定後工具20を原位置に戻した際の保持部材18のスプリングバック量を、下記のa、bの方法で補正することにより、接点間隔Lをさらに高精度に設定することができる。
【0036】
(a) 多数の電磁継電器にて予め保持部材18のスプリングバック量の平均値を確認しておき、その後に製造される電磁継電器の接点間隔Lの設定の際、平均スプリングバック量分だけ一律に余分に変形させる。
【0037】
(b) 個々の電磁継電器毎に、保持部材18のスプリングバック量を計測し、その量に応じて追加変形させる。
【0038】
また、上記各実施形態において、工具20を移動させる駆動手段としてパルスモータを使用することにより、工具20の移動量を精密に制御することができる。
【図面の簡単な説明】
【図1】本発明の第1実施形態に係わる電磁継電器の断面図である。
【図2】図1のA部の拡大図である。
【図3】図1の電磁継電器における接点間隔Lの設定工程を示す断面図である。
【図4】本発明の第2実施形態に係わる電磁継電器の断面図である。
【図5】従来の電磁継電器の断面図である。
【符号の説明】
10…固定接点、11…可動接点、18…保持部材、18c…透孔、
C…接点間隔方向、L…接点間隔。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing an electromagnetic relay that opens and closes an electric circuit.
[0002]
[Prior art]
In recent years, there has been an increasing need for miniaturization of electromagnetic relays, and in order to meet these needs, it is indispensable to improve processing accuracy and assembly accuracy of components. Japanese Patent No. 2892230 discloses an electromagnetic relay intended to accurately set a facing interval (hereinafter referred to as a contact interval) between a fixed contact and a movable contact in the assembly accuracy.
[0003]
As shown in FIG. 5, the electromagnetic relay described in the above publication forms a through hole 18c in the holding member 18 of the fixed contact 10, and moves the fixed contact 10 toward the movable contact 11 by plastically deforming the through hole 18c. Thus, the contact interval L is set, and the contact interval L can be set with high accuracy by managing the amount of plastic deformation.
[0004]
[Problems to be solved by the invention]
However, the electromagnetic relay described in the above publication is loaded with a tool from both sides of the holding member 18 in the width direction X (perpendicular to the moving direction Y of the fixed contact 10 and perpendicular to the thickness direction of the holding member 18). In order to deform the through hole 18c, it is necessary to secure a tool insertion space on both sides in the width direction X of the holding member 18, and there is a problem that the above setting method cannot be applied to an electromagnetic relay that cannot secure the tool insertion space. It was.
[0005]
Further, when the through hole 18c is deformed, the fixed contact 10 moves in a substantially vertical direction with respect to the direction X of the load applied to the holding member 18. In other words, both directions do not coincide with each other. However, when the fixed contact 10 moves, the fixed contact 10 easily tilts, and therefore, there is a problem that the parallelism of both the contacts 10 and 11 is likely to be incorrect.
[0006]
The present invention has been made in view of the above points, and in a method of manufacturing an electromagnetic relay in which a fixed contact is moved by deforming a through hole formed in a holding member to set a contact interval, the width direction of the holding member Even in an electromagnetic relay that cannot secure a tool insertion space on both sides, an object is to make it possible to set a contact interval by deforming through holes.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, an electromagnetic coil (13) that generates an electromagnetic force when energized, a movable contact (11) driven by the electromagnetic force of the electromagnetic coil (13), and a movable A fixed contact (10) disposed opposite to the contact (11) and contacting and separating the movable contact (11), and a plate-like holding member (18) for holding the fixed contact (10) in a predetermined position. The electromagnetic relay is prepared , and the through hole (18c) formed in the holding member (18) is deformed, so that the fixed contact (in the direction (C) of the contact interval (L) between the two contacts (10, 11) ( In the electromagnetic relay manufacturing method of setting the contact interval (L) by moving 10), the through hole (18c) is moved in the contact interval direction (C) by the tool (20) inserted into the through hole (18c). The fixed contact (10) is moved by being expanded. .
[0008]
According to this, since the tool inserted into the through hole is used, even in an electromagnetic relay that cannot secure a tool insertion space on both sides in the width direction of the holding member, the through hole can be deformed to set the contact interval with high accuracy.
[0009]
In addition, it is not necessary to provide a tool insertion space on both sides in the width direction of the holding member, and it is sufficient if there is a space for inserting the tool into the through hole. Therefore, it is easy to save space for the electromagnetic relays arranged in multiples.
[0010]
Further, since the fixed contact is moved by expanding the through hole in the contact interval direction, the direction of the load applied from the tool to the holding member substantially coincides with the movement direction of the fixed contact, and therefore the fixed contact when the fixed contact moves. Therefore, it is possible to reduce the deviation of the parallelism between the two contacts after the fixed contact is moved.
[0011]
The invention according to claim 1 is the surface (20a) on the fixed contact (10) side of the surface in contact with the inner edge of the through hole (18c) in the tool (20), as in the invention according to claim 2. Is inclined with respect to the contact interval direction (C), and the surface (20b) on the side opposite to the fixed contact among the surfaces in contact with the inner edge of the through hole (18c) in the tool (20) is changed to the contact interval direction (C). Can be carried out by moving the tool (20) in a direction perpendicular to the contact spacing direction (C).
[0012]
The invention according to claim 3 is characterized in that the tool (20) is moved in a state in which both sides in the moving direction of the tool (20) in the holding member (18) are sandwiched by jigs (21, 22).
[0013]
By the way, in the case of invention of Claim 2, a holding member will be bent in the moving direction of a tool by the component force of the load added to a holding member from a tool. On the other hand, according to the invention of claim 3, since the bending of the holding member in the moving direction of the tool is prevented by the jig, it is possible to further reduce the deviation in the parallelism of the two contacts after moving the fixed contact. it can.
[0014]
In the invention according to claim 4, the stationary iron core (14) disposed in the electromagnetic coil (13) to form a magnetic path, and disposed opposite to the stationary iron core (14), the electromagnetic of the electromagnetic coil (13). A movable iron piece (15) attracted to the fixed iron core (14) side by force, and a method of manufacturing an electromagnetic relay in which the movable contact (11) is driven together with the movable iron piece (15), the fixed iron core (14) The gauge (30) having a predetermined thickness is arranged between the movable iron piece (15) and the movable iron piece (15) is sucked, and is fixed to the position where both the contacts (10, 11) contact with the tool (20). The contact (10) is moved.
[0015]
According to this, since the air gap is set with high accuracy, it is possible to set the contact pressure between the two contacts in actual use with high accuracy.
[0016]
In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
1 to 3 show a first embodiment of the present invention. FIG. 1 is a sectional view of an electromagnetic relay, and FIG. 2 is an enlarged view of a portion A in FIG. FIG. 3 is a cross-sectional view taken along the line BB in FIG.
[0018]
In FIG. 1 to FIG. 3, 10 is a fixed contact, and 11 is a movable contact that is movable with respect to the fixed contact 10. The leaf spring 12 to which the movable contact 11 is attached applies an elastic force to the movable contact 11 in a direction in which the movable contact 11 is separated from the fixed contact 10 and also serves as a part of an electric circuit.
[0019]
In addition, an electromagnetic coil 13 (hereinafter simply referred to as a coil) that generates an electromagnetic force when energized and a fixed iron core 14 that is disposed in the coil 13 and forms a magnetic path of magnetic flux are provided on the leaf spring 12 on the fixed iron core 14 side. A movable iron piece 15 to be sucked is attached. The movable contact 11 and the movable iron piece 15 are fixed to the leaf spring 12 by caulking. The yoke 16 is fixed to a resin base 17 to hold the coil 13 and the leaf spring 12 and constitutes a magnetic path of magnetic flux induced by the coil 13.
[0020]
One end side of the metal plate-like holding member 18 fixed to the base 17 is located in a cover 19 that covers the coil 13 and the like, and a portion located in the cover 19 is bent into an L shape and is a first plate. A portion 18a and a second plate portion 18b are formed. The first plate portion 18a extends in the contact interval direction C between the fixed contact 10 and the movable contact 11, and the second plate portion 18b extends from the end of the first plate portion 18a in a direction perpendicular to the contact interval direction C. Yes. And the fixed contact 10 is being fixed to the 2nd board part 18b by caulking, and the holding member 18 serves as a part of electric circuit.
[0021]
The first plate portion 18a is formed with a through-hole 18c penetrating in the thickness direction. The inner edge of the through-hole 18c extends in a direction perpendicular to the contact spacing direction C and also has a contact spacing direction C. Two processing reference surfaces 18d and 18e are formed at a predetermined interval. Hereinafter, the processing reference surface 18d on the fixed contact 10 side is referred to as a first processing reference surface, and the processing reference surface 18e on the anti-fixed contact side is referred to as a second processing reference surface.
[0022]
In the electromagnetic relay configured as described above, when the coil 13 is energized, the movable iron piece 15 is attracted to the fixed iron core 14 by the electromagnetic attraction force, the movable contact 11 abuts on the fixed contact 10 and the electric circuit is closed.
[0023]
Next, a method for setting the contact distance L between the contacts 10 and 11 will be described.
[0024]
The contact interval L is set in a state where the cover 19 is not attached. Further, when setting the contact interval L, the tool 20, the receiving jig 21, the pressing jig 22, and the spring 23 are used.
[0025]
The tool 20 is inserted into the through hole 18c of the holding member 18 to deform the through hole 18c, and the first flat surface 20a that abuts the first processing reference surface 18d of the through hole 18c is in the contact spacing direction C. The second flat surface 20b which is an inclined surface and abuts on the second processing reference surface 18e of the through hole 18c is a surface perpendicular to the contact spacing direction C. The tool 20 is moved in a direction perpendicular to the contact spacing direction C (in other words, in the thickness direction of the first plate portion 18a) by a driving means (not shown).
[0026]
The receiving jig 21 and the holding jig 22 sandwich and hold the periphery of the through hole 18c in the first plate portion 18a from both sides in the moving direction of the tool 20 (in other words, both sides in the thickness direction of the first plate portion 18a). Through holes 21 a and 22 a are formed at the center of the receiving jig 21 and the holding jig 22.
[0027]
When setting the contact interval L, first, the first plate 18a is sandwiched between the receiving jig 21 and the holding jig 22, and then the tool 20 is moved downward from the upper side in FIG. The jig 22 is inserted into the through hole 22a of the jig 22, the through hole 18c of the first plate portion 18a, and the through hole 21a of the receiving jig 21 in this order.
[0028]
When the tool 20 is further moved after the first and second flat surfaces 20a and 20b of the tool 20 abut on the first and second processing reference surfaces 18d and 18e of the through hole 18c, the first and second surfaces are moved. The through hole 18c is expanded so that the interval between the processing reference surfaces 18d and 18e is increased. Along with this deformation, the second plate portion 18b, which is a free end, moves to the movable contact 11 side, and thus the fixed contact 10 moves to the movable contact 11 side. The movement of the fixed contact 10 reduces the contact distance L, and stops the tool 20 when the contact distance L reaches a predetermined value.
[0029]
According to the present embodiment, since the tool 20 inserted into the through hole 18c is used, even in an electromagnetic relay that cannot secure a tool insertion space on both sides in the width direction X of the holding member 18, the through hole 18c is deformed to set the contact interval L. It can be set with high accuracy.
[0030]
Further, since the through hole 18c is expanded in the contact spacing direction C to move the fixed contact 10, the direction of the load applied from the tool to the first plate portion 18a substantially matches the moving direction of the fixed contact 10. Therefore, the inclination of the fixed contact 10 when the fixed contact 10 moves is reduced, and the deviation in parallelism between the two contacts 10 and 11 after the fixed contact is moved can be reduced.
[0031]
Further, a force for bending the first plate portion 18 a in the moving direction of the tool 20 acts on the first plate portion 18 a from the tool 20, but the receiving plate 21 and the holding jig 22 cause the first plate portion 18 a to move. Since the bending is prevented, it is possible to further reduce the deviation in parallelism between the two contacts 10 and 11 after the fixed contact is moved.
[0032]
(Second Embodiment)
FIG. 4 shows a second embodiment. In this embodiment, a gauge 30 is arranged between the fixed iron core 14 and the movable iron piece 15 to set the contact interval L. FIG. Other points are common to the first embodiment.
[0033]
In FIG. 4, when setting the contact interval L, first, the coil 13 is energized with the gauge 30 for securing the air gap inserted between the fixed iron core 14 and the movable iron piece 15, and the movable iron piece 15 is fixed. Suction to the iron core 14 side. Next, when the movable iron piece 15 is sucked, the fixed contact 10 is moved to the movable contact 11 side in the same manner as in the first embodiment, and when the continuity or contact of both the contacts 10, 11 can be confirmed, the tool 20 To stop.
[0034]
According to this, since the air gap is set with high accuracy, the contact pressure of both the contacts 10 and 11 during actual use can be set with high accuracy.
[0035]
(Other embodiments)
In each of the above embodiments, the contact distance L is further increased by correcting the springback amount of the holding member 18 when the tool 20 is returned to the original position after the contact distance L is set by the following methods a and b. The accuracy can be set.
[0036]
(A) The average value of the springback amount of the holding member 18 is confirmed in advance by a number of electromagnetic relays, and when setting the contact interval L of the electromagnetic relay manufactured thereafter, the average springback amount is uniformly set. Deform extra.
[0037]
(B) The spring back amount of the holding member 18 is measured for each individual electromagnetic relay, and additional deformation is performed according to the amount.
[0038]
Moreover, in each said embodiment, the movement amount of the tool 20 can be precisely controlled by using a pulse motor as a drive means to which the tool 20 is moved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an electromagnetic relay according to a first embodiment of the present invention.
FIG. 2 is an enlarged view of part A in FIG.
3 is a cross-sectional view showing a process for setting a contact interval L in the electromagnetic relay of FIG. 1;
FIG. 4 is a cross-sectional view of an electromagnetic relay according to a second embodiment of the present invention.
FIG. 5 is a cross-sectional view of a conventional electromagnetic relay.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Fixed contact, 11 ... Movable contact, 18 ... Holding member, 18c ... Through-hole,
C: Contact spacing direction, L: Contact spacing.

Claims (4)

通電時に電磁力を発生する電磁コイル(13)と、
前記電磁コイル(13)の電磁力により駆動される可動接点(11)と、
前記可動接点(11)に対向して配置されて、前記可動接点(11)が接離する固定接点(10)と、
前記固定接点(10)を所定位置に保持する板状の保持部材(18)とを備える電磁継電器を準備し
前記保持部材(18)に形成された透孔(18c)を変形させることにより、前記両接点(10、11)間の接点間隔(L)の方向(C)に前記固定接点(10)を移動させて、前記接点間隔(L)を設定する電磁継電器の製造方法において、
前記透孔(18c)に挿入される工具(20)により、前記透孔(18c)を前記接点間隔方向(C)に押し拡げて前記固定接点(10)を移動させることを特徴とする電磁継電器の製造方法。
An electromagnetic coil (13) that generates electromagnetic force when energized;
A movable contact (11) driven by electromagnetic force of the electromagnetic coil (13);
A fixed contact (10) disposed opposite to the movable contact (11) to which the movable contact (11) contacts and separates;
Prepare an electromagnetic relay Ru comprising a plate-like holding member (18) and for holding the fixed contact (10) in a predetermined position,
The fixed contact (10) is moved in the direction (C) of the contact interval (L) between the two contacts (10, 11) by deforming the through hole (18c) formed in the holding member (18). In the electromagnetic relay manufacturing method of setting the contact interval (L),
An electromagnetic relay characterized in that the fixed contact (10) is moved by expanding the through hole (18c) in the contact gap direction (C) by a tool (20) inserted into the through hole (18c). Manufacturing method.
前記工具(20)において前記透孔(18c)の内縁部に当接する面のうち前記固定接点(10)側の面(20a)を、前記接点間隔方向(C)に対して傾斜させ、
前記工具(20)において前記透孔(18c)の内縁部に当接する面のうち反固定接点側の面(20b)を、前記接点間隔方向(C)に対して垂直とし、
前記工具(20)を、前記接点間隔方向(C)に対して垂直方向に移動させることを特徴とする請求項1に記載の電磁継電器の製造方法。
In the tool (20), the surface (20a) on the fixed contact (10) side of the surface contacting the inner edge of the through hole (18c) is inclined with respect to the contact spacing direction (C),
In the tool (20), the surface (20b) on the side opposite to the fixed contact among the surfaces in contact with the inner edge of the through hole (18c) is perpendicular to the contact spacing direction (C),
The method for manufacturing an electromagnetic relay according to claim 1, wherein the tool (20) is moved in a direction perpendicular to the contact spacing direction (C).
前記保持部材(18)における前記工具(20)の移動方向両面を治具(21、22)により挟んだ状態で、前記工具(20)を移動させることを特徴とする請求項2に記載の電磁継電器の製造方法。3. The electromagnetic wave according to claim 2, wherein the tool (20) is moved in a state in which both sides of the holding member (18) in the moving direction of the tool (20) are sandwiched by jigs (21, 22). Relay manufacturing method. 前記電磁コイル(13)内に配置されて磁路を形成する固定鉄心(14)と、前記固定鉄心(14)に対向して配置され、前記電磁コイル(13)の電磁力により前記固定鉄心(14)側に吸引される可動鉄片(15)とを備え、前記可動鉄片(15)とともに前記可動接点(11)が駆動される電磁継電器の製造方法であって、
前記固定鉄心(14)と前記可動鉄片(15)との間に所定厚みのゲージ(30)を配置して前記可動鉄片(15)を吸引した状態で、前記工具(20)により前記両接点(10、11)が接触する位置まで前記固定接点(10)を移動させることを特徴とする請求項1ないし3のいずれか1つに記載の電磁継電器の製造方法。
A stationary iron core (14) disposed in the electromagnetic coil (13) to form a magnetic path, and disposed opposite to the stationary iron core (14), and the stationary iron core ( 14) a movable iron piece (15) attracted to the side, and the method for manufacturing an electromagnetic relay in which the movable contact (11) is driven together with the movable iron piece (15),
In a state where a gauge (30) having a predetermined thickness is disposed between the fixed iron core (14) and the movable iron piece (15) and the movable iron piece (15) is sucked, the two contacts ( The method of manufacturing an electromagnetic relay according to any one of claims 1 to 3, wherein the fixed contact (10) is moved to a position where the contact is made.
JP2001242670A 2001-08-09 2001-08-09 Manufacturing method of electromagnetic relay Expired - Lifetime JP4374810B2 (en)

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