JP2584399B2 - Electromagnetic relay - Google Patents
Electromagnetic relayInfo
- Publication number
- JP2584399B2 JP2584399B2 JP4351704A JP35170492A JP2584399B2 JP 2584399 B2 JP2584399 B2 JP 2584399B2 JP 4351704 A JP4351704 A JP 4351704A JP 35170492 A JP35170492 A JP 35170492A JP 2584399 B2 JP2584399 B2 JP 2584399B2
- Authority
- JP
- Japan
- Prior art keywords
- contact spring
- movable contact
- operating member
- spring
- electromagnet device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は電磁継電器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic relay.
【０００２】[0002]
【従来の技術】電磁継電器としては、例えば、並設され
た固定接点バネと可動接点バネからなる複数の接点バネ
セットと、電磁石装置と、電磁石装置により作動されて
各可動接点バネを対応する固定接点バネに接離させる作
動部材と、電磁石装置による作動方向とは反対方向に作
動部材を付勢する復帰バネとを有するものがある。とこ
ろで、上記従来においては、可動接点バネと固定接点バ
ネが溶着した際の対策が何らとられていなかった。2. Description of the Related Art Electromagnetic relays include, for example, a plurality of contact spring sets each including a fixed contact spring and a movable contact spring arranged in parallel, an electromagnet device, and fixed contacts corresponding to each movable contact spring operated by the electromagnet device. Some have an operating member that comes in contact with and separate from a spring, and a return spring that urges the operating member in a direction opposite to the operating direction of the electromagnet device. By the way, in the related art, no measure has been taken when the movable contact spring and the fixed contact spring are welded.
【０００３】[0003]
【発明が解決しようとする課題】このため、上記従来に
おいては、電磁石装置の励磁時又は無励磁時に、短絡電
流等により、一つの接点バネセットの両接点バネが溶着
しても、電磁石装置の励磁状態を上記溶着時とは反対に
した際には、上記溶着とは関係なく、他の接点バネセッ
トの両接点バネの当接が行われており、電磁継電器によ
り制御する機器が誤動作する惧れがあると共に、上記溶
着も外部から分かりにくかったのが実情である。本発明
は、上記問題を解決できる電磁継電器を提供することを
目的とする。For this reason, in the prior art, even when both contact springs of one contact spring set are welded due to a short-circuit current or the like when the magnet device is excited or not excited, the magnet device cannot be excited. When the state is reversed from that at the time of the welding, regardless of the welding, the two contact springs of the other contact spring set are in contact with each other, and the device controlled by the electromagnetic relay may malfunction. At the same time, the above-mentioned welding was difficult to understand from the outside. An object of the present invention is to provide an electromagnetic relay that can solve the above problem.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明の特徴とするところは、 絶縁材料から成
り、一体形成されたハウジングと、 ハウジングに立
設されて、左右方向に対向する固定接点バネと可動接点
バネからなる複数の接点バネセットと、 ハウジング
と左右方向に並設された電磁石装置と、 電磁石装置
の作動により、各可動接点バネを対応する固定接点バネ
に接離させる作動部材と、 作動部材を、電磁石装置
による作動方向とは反対方向に付勢する復帰バネと、
下方にのみ開口する中空直方体形状とされて、ハウジ
ング、接点バネセット、電磁石装置、作動部材、復帰バ
ネに上方から外嵌されて、これらをカバーする保護カバ
ーを有し、ハウジングに、・ 作動部材の上方と下方に
位置して、固定接点バネが電磁石装置の無励磁時の位置
から対応する可動接点バネ側へ揺動することを阻止する
上下一対のストッパが、各固定接点バネに対応して、形
成され、作動部材に、各可動接点バネの上下方向中間部
が左右方向に相対移動不能に係合される係合部が形成さ
れ、係合部の左右方向の幅が、下方に向かうに従って、
大とされ、可動接点バネが、自由状態で、対応する固定
接点バネから離間するようにされた点にある。尚、一つ
の接点バネセットが、電磁継電器監視用報知器の駆動回
路における開閉スイッチとされることもある。In order to solve the above-mentioned problems, the present invention is characterized in that a housing made of an insulating material and integrally formed, and an upright standing on the housing and opposed in the left-right direction. A plurality of contact spring sets each including a fixed contact spring and a movable contact spring; an electromagnet device arranged side by side with the housing; and an operating member for bringing each movable contact spring into and out of contact with the corresponding fixed contact spring by operation of the electromagnet device. A return spring that biases the operating member in a direction opposite to the direction of operation by the electromagnet device;
It has a hollow rectangular parallelepiped shape that opens only downward, and has a protective cover that covers the housing, contact spring set, electromagnet device, operating member, and return spring from above and covers these. A pair of upper and lower stoppers located above and below, which prevent the fixed contact spring from swinging from the position of the electromagnet device when the magnet is not excited to the corresponding movable contact spring side, correspond to each fixed contact spring, In the operating member, an engaging portion is formed in which a vertical intermediate portion of each movable contact spring is engaged so as to be relatively immovable in the left-right direction, and the width in the left-right direction of the engaging portion is downward,
The point is that the movable contact spring is free and separated from the corresponding fixed contact spring. Incidentally, one contact spring set may be used as an open / close switch in a drive circuit of an alarm for monitoring an electromagnetic relay.
【０００５】[0005]
【作用】短絡電流等により、電磁石装置の励磁時又は無
励磁時に、一つの接点バネセットの両接点バネが溶着す
ることがある。この場合に、電磁石装置の励磁状態を溶
着時とは反対にすると、作動部材が移動して、各可動接
点バネ及び溶着した固定接点バネも同様に移動する。然
しながら、溶着した固定接点バネはストッパと当接し
て、その移動が阻止され、又、溶着した可動接点バネも
その移動が阻止されるため、溶着した固定接点バネがス
トッパと当接した時点からは、作動部材は、溶着した可
動接点バネの撓み分だけ移動することとなり、作動部材
の移動量は、電磁石装置の励磁状態を反対にした通常の
場合よりも小さな移動量にとどまる。そして、上記のよ
うに、溶着した固定接点バネがストッパと当接した時点
からは、作動部材が、溶着した可動接点バネの撓み分だ
け移動することから、各接点バネセットにおいて、当接
している両接点バネは離間される。又、上記のように、
作動部材の移動量が、電磁石装置の励磁状態を反対にし
た通常の場合よりも小さな移動量にとどまることから、
接点バネセットにおいて、離間している両接点バネも当
接されず、離間した状態にとどまる。When the electromagnet device is excited or de-energized, both contact springs of one contact spring set may be welded due to a short-circuit current or the like. In this case, if the excitation state of the electromagnet device is reversed from that at the time of welding, the operating member moves, and each movable contact spring and the welded fixed contact spring also move. However, the welded fixed contact spring abuts the stopper and is prevented from moving, and the welded movable contact spring is also prevented from moving. The actuating member moves by an amount corresponding to the bending of the welded movable contact spring, and the amount of movement of the actuating member is smaller than that in a normal case where the excitation state of the electromagnet device is reversed. Then, as described above, from the time when the welded fixed contact spring comes into contact with the stopper, the operating member moves by an amount corresponding to the bending of the welded movable contact spring. The contact springs are spaced apart. Also, as mentioned above,
Since the moving amount of the operating member is smaller than the normal case where the excitation state of the electromagnet device is reversed,
In the contact spring set, the separated contact springs are not brought into contact with each other and remain in a separated state.
【０００６】[0006]
【実施例】以下、本発明の一実施例を図面に基づき説明
する。図１乃至図７は電磁継電器を示し、電磁継電器
は、ハウジング１と、複数の接点バネセット２〜７と、
電磁石装置８と、作動部材９と、復帰バネ１０と、保護
カバー１１とを有する。An embodiment of the present invention will be described below with reference to the drawings. 1 to 7 show an electromagnetic relay, which includes a housing 1, a plurality of contact spring sets 2 to 7,
An electromagnet device 8, an operating member 9, a return spring 10, and a protective cover 11 are provided.
【０００７】ハウジング１は、電磁継電器の左側部分を
構成するもので、絶縁材料、例えば、硬質の合成樹脂に
より一体成形されている。ハウジング１は、直方体形状
の基台部１３と、基台部１３の右端部から立設され且つ
接点バネセット２〜７と電磁石装置８とを区画する右外
側壁１４と、基台部１３の左端部から立設された左外側
壁１５と、基台部１３から立設され且つ両外側壁１４，
１５間を前後に区画する遮断壁１６と、両外側壁１４，
１５間の遮断壁１６により区画された前後の空間部を夫
々左右方向に関して区画するための前後２個宛の隔壁１
７及び前後３個宛の中間壁１８と、上記壁１４〜１８の
上端を連結する天壁１９とから成る。尚、ハウジング２
の前後部において、隔壁１７及び中間壁１８は、左右方
向に関して、中間壁１８、隔壁１７、中間壁１８・・・
の順で配設されている。これにより、ハウジング１内に
は、夫々、前後の空間部において、右外側壁１４と右側
隔壁１７間、隣接する隔壁１７間、左側隔壁１７と左外
側壁１５間に、前方又は後方に開口する６個の接点バネ
セット用チャンバー２０が形成され、又、各チャンバー
２０内は、中間壁１８により、更に、固定接点バネ用チ
ャンバー２０Ａと、可動接点バネ用チャンバー２０Ｂに
区画されている。右外側壁１４の上部、遮断壁１６の右
端部、各隔壁１７及び各中間壁１８の各上部には、夫
々、作動部材用切欠部１４Ａ，１６Ａ，１７Ａ，１８Ａ
が前後方向全長にわたって形成されており、右外側壁１
４、各隔壁１７及び各中間壁１８は、作動部材用切欠部
１４Ａ，１７Ａ，１８Ａで上下に２分割された状態とさ
れている。各中間壁１８の作動部材用切欠部１８Ａは隔
壁１７のそれよりも上側に大きく形成されて、各中間壁
１８の作動部材用切欠部１８Ａの上側端縁部は、天壁１
９から少し下方に突出した固定接点バネ用上ストッパ１
８Ｂとされ、又、作動部材用切欠部１８Ａの下側端縁部
は、円形状とされて固定接点バネ用下ストッパ１８Ｃと
されている。The housing 1 constitutes the left portion of the electromagnetic relay, and is integrally formed of an insulating material, for example, a hard synthetic resin. The housing 1 has a rectangular parallelepiped base 13, a right outer wall 14 erected from the right end of the base 13 and separating the contact spring sets 2 to 7 and the electromagnet device 8, a left end of the base 13. Left outer wall 15 erected from the base, and both outer walls 14 erected from the base 13
15 and the outer wall 14,
Partition walls 1 for the front and rear two for partitioning the front and rear spaces defined by the interception walls 16 between the front and rear sides in the left-right direction, respectively.
7 and three front and rear intermediate walls 18 and a top wall 19 connecting the upper ends of the walls 14 to 18. In addition, housing 2
, The partition wall 17 and the intermediate wall 18 are arranged in the horizontal direction.
It is arranged in the order of. As a result, in the housing 1, front and rear openings are provided between the right outer wall 14 and the right partition 17, between the adjacent partitions 17, and between the left partition 17 and the left outer wall 15 in the front and rear spaces, respectively. Six contact spring setting chambers 20 are formed, and the interior of each chamber 20 is further divided by an intermediate wall 18 into a fixed contact spring chamber 20A and a movable contact spring chamber 20B. Notches 14A, 16A, 17A, and 18A for operating members are provided in the upper portion of the right outer wall 14, the right end of the blocking wall 16, the upper portions of the partitions 17 and the intermediate walls 18, respectively.
Are formed over the entire length in the front-rear direction, and the right outer wall 1
4. Each of the partition walls 17 and each of the intermediate walls 18 are vertically divided into two by the operating member cutouts 14A, 17A, 18A. The operating member notch 18A of each intermediate wall 18 is formed to be larger than that of the partition wall 17, and the upper edge of the operating member notch 18A of each intermediate wall 18 is
Upper contact 1 for fixed contact spring projecting slightly downward from 9
8B, and the lower edge of the cutout 18A for the operating member is formed in a circular shape to be a lower stopper 18C for the fixed contact spring.
【０００８】接点バネセット２〜７は、ハウジング１の
基台部１３から立設されて、ハウジング１の遮断壁１６
により、前側の接点バネセット２〜４と後側の接点バネ
セット５〜７に隔てられると共に、これら各接点バネセ
ット２〜７は、左右方向に関しても、隔壁１７により、
隣接する各接点バネセット２〜７と隔てられており、各
接点バネセット２〜７の揺動部分は、ハウジング１の各
接点バネセット用チャンバー２０に内有されている。各
接点バネセット２〜７は、夫々、並設された固定接点バ
ネ２２と、可動接点バネ２３とから成り、各接点バネ２
２，２３は、導電性のバネ材料から成る。各固定接点バ
ネ２２及び各可動接点バネ２３は、ハウジング１の基台
部１３から立設されて、その揺動部分が、夫々、各固定
接点バネ用チャンバー２０Ａ及び各可動接点バネ用チャ
ンバー２０Ｂに内有されると共に、各固定接点バネ２２
は、固定接点バネ用上・下ストッパ１８Ｂ，１８Ｃに押
圧状に当接して、電磁石装置８の無励磁時の位置から対
応する可動接点バネ２３側への移動を阻止されている。
各固定接点バネ２２及び各可動接点バネ２３の上端部に
は、固定接点部２２Ａと可動接点部２３Ａが形成されて
いる。これら両接点部２２Ａ，２３Ａにより、常開型で
あるａ接点又は、常閉型であるｂ接点が構成され、接点
バネセット２，５がｂ接点２Ａ，５Ａを有し、接点バネ
セット３，４，６，７がａ接点３Ａ，４Ａ，６Ａ，７Ａ
を有している。又、各可動接点バネ２３は、自由状態
で、対応する固定接点バネ２２から離間する鉛直姿勢と
なるようにされている。尚、ハウジング１の基台部１３
からは、各固定接点バネ２２及び各可動接点バネ２３と
当接する固定接点バネ用接続端子２４及び可動接点バネ
用接続端子２５が下設されている。The contact spring sets 2 to 7 stand upright from the base 13 of the housing 1 and
The contact spring sets 2 to 4 on the front side and the contact spring sets 5 to 7 on the rear side are separated from each other.
The contact spring sets 2 to 7 are separated from each other, and the swinging portions of the contact spring sets 2 to 7 are contained in the contact spring set chambers 20 of the housing 1. Each of the contact spring sets 2 to 7 includes a fixed contact spring 22 and a movable contact spring 23 which are provided side by side.
2 and 23 are made of a conductive spring material. Each of the fixed contact springs 22 and each of the movable contact springs 23 are erected from the base portion 13 of the housing 1, and their swinging portions are respectively provided in the fixed contact spring chambers 20A and the movable contact spring chambers 20B. Each fixed contact spring 22
Are pressed against the upper and lower stoppers 18B and 18C for the fixed contact springs to prevent the electromagnet device 8 from moving from the non-excited position to the corresponding movable contact spring 23 side.
At the upper end of each fixed contact spring 22 and each movable contact spring 23, a fixed contact portion 22A and a movable contact portion 23A are formed. These contact portions 22A and 23A constitute a normally open type a contact or a normally closed type b contact. The contact spring sets 2 and 5 have b contacts 2A and 5A. 6, 7 are a contacts 3A, 4A, 6A, 7A
have. In addition, each movable contact spring 23 is set in a vertical posture separated from the corresponding fixed contact spring 22 in a free state. The base 13 of the housing 1
From below, a fixed contact spring connection terminal 24 and a movable contact spring connection terminal 25 that come into contact with each fixed contact spring 22 and each movable contact spring 23 are provided below.
【０００９】電磁石装置８は、作動部材９を介して、各
可動接点バネ２３を対応する固定接点バネ２２に接離さ
せるもので、電磁継電器の右側部分を構成して、ハウジ
ング１の右側に並設されており、鉄心２７に巻き回され
たコイル２８と、鉄心２７の下端部に固着されたＬ字形
ヨーク２９と、ヨーク２９の上部にヒンジバネ３０を介
して係止されたアマチュア３１等を有する。The electromagnet device 8 is configured to move each movable contact spring 23 toward and away from the corresponding fixed contact spring 22 via the operating member 9. The electromagnet device 8 constitutes a right portion of the electromagnetic relay and is arranged on the right side of the housing 1. A coil 28 wound around an iron core 27, an L-shaped yoke 29 fixed to the lower end of the iron core 27, and an armature 31 locked at the upper part of the yoke 29 via a hinge spring 30. .
【００１０】作動部材９は、電磁石装置８により作動さ
れて、各可動接点バネ２３を対応する固定接点バネ２２
に接離させるもので、作動部材９は、絶縁材料、例え
ば、合成樹脂により、二股状に形成されており、アマチ
ュア３１に挿入係合される基部９Ａと、基部９Ａから左
側に延出された前後一対の延出部９Ｂと、各延出部９Ｂ
の左端部から左側方に突設された前後一対の突設部９Ｃ
とから成る。基部９Ａは、右外側壁１４、遮断壁１６の
作動部材用切欠部１４Ａ，１６Ａに挿入され、又、延出
部９Ｂは、各隔壁１７及び中間壁１８の作動部材用切欠
部１７Ａ，１８Ａ及び左外側壁１５に左右方向に移動自
在に挿入されて、各延出部９Ｂの左端部及び各突設部９
Ｃは左外側壁１５からその左側方に突出している。各延
出部９Ｂには、各可動接点バネ２３が左右方向に相対移
動不能に係合される係合凹部９Ｄが形成され、この係合
凹部９Ｄの左右方向の幅は、下方に向かうに従って大と
なるようにされて、作動部材９による可動接点バネ２３
の揺動時に支障をきたさないようにされている。The actuating member 9 is actuated by the electromagnet device 8 to move each movable contact spring 23 to a corresponding fixed contact spring 22.
The operating member 9 is formed in a bifurcated shape with an insulating material, for example, a synthetic resin, and extends from the base 9A to the left side from the base 9A inserted into and engaged with the amateur 31. A pair of front and rear extensions 9B, and each extension 9B
A pair of front and rear protruding portions 9C protruding leftward from the left end of the
Consisting of The base 9A is inserted into the cutouts 14A and 16A for operating members of the right outer wall 14 and the blocking wall 16, and the extension 9B is formed with cutouts 17A and 18A for operating members of each partition 17 and the intermediate wall 18. It is movably inserted into the left outer wall 15 in the left-right direction, and the left end of each extension 9B and each protrusion 9
C protrudes leftward from the left outer wall 15. Each extension 9B is formed with an engagement recess 9D in which each movable contact spring 23 is engaged so as to be relatively immovable in the left-right direction. The width of the engagement recess 9D in the left-right direction increases as it goes downward. The movable contact spring 23 by the operating member 9
So that it does not hinder the rocking motion of the robot.
【００１１】復帰バネ１０は、電磁石装置８による作動
方向とは反対方向、即ち、右方向に作動部材９を付勢す
るもので、正面視略への字形で且つ側面視倒立Ｕ形状の
板バネとされ、その下部がハウジング１の基台部１３の
左端部に装着され、上端部が作動部材９の各延出部９Ｂ
の左端と当接すると共に、上端部には、作動部材９の各
突設部９Ｃが挿通されている。保護カバー１１は、絶縁
材料、例えば、透明な合成樹脂により、一体形成され
て、下方にのみ開口する中空直方体形状とされると共
に、電磁継電器の全体に上方から着脱自在に外嵌固定さ
れており、接点バネセット用チャンバー２０の前方又は
後方側開口を閉塞している。The return spring 10 urges the operating member 9 in a direction opposite to the direction of operation by the electromagnet device 8, that is, in the rightward direction. The lower part is attached to the left end of the base part 13 of the housing 1, and the upper end is each extension part 9 </ b> B of the operating member 9.
Each of the projecting portions 9C of the operating member 9 is inserted into the upper end portion while being in contact with the left end of the operating member 9. The protective cover 11 is integrally formed of an insulating material, for example, a transparent synthetic resin, has a hollow rectangular parallelepiped shape that opens only downward, and is externally and detachably fixed to the entire electromagnetic relay from above. The front or rear opening of the contact spring setting chamber 20 is closed.
【００１２】上記のように構成した実施例によれば、電
磁継電器のコイル２８の無励磁状態では、図１に示すよ
うに、復帰バネ１０により、作動部材９が右側に付勢さ
れて、作動部材９の基部９Ａが電磁石装置８のヨーク２
９に押圧状に当接し、接点バネセット２，５では、各可
動接点バネ２３が対応する固定接点バネ２２と押圧状に
当接すると共に、各固定接点バネ２２が固定接点バネ用
上・下ストッパ１８Ｂ，１８Ｃから右側に離間して、各
ｂ接点２Ａ，５Ａは閉成状態とされている。又、接点バ
ネセット３，４，６，７では、各固定接点バネ２２が固
定接点バネ用上・下ストッパ１８Ｂ，１８Ｃと当接し
て、対応する可動接点バネ２３から離間しており、各ａ
接点３Ａ，４Ａ，６Ａ，７Ａは開離状態とされている。According to the embodiment constructed as described above, when the coil 28 of the electromagnetic relay is not energized, the operating member 9 is urged rightward by the return spring 10 as shown in FIG. The base 9A of the member 9 is the yoke 2 of the electromagnet device 8.
9, in the contact spring sets 2 and 5, each movable contact spring 23 comes into contact with the corresponding fixed contact spring 22 in a pressed manner, and each fixed contact spring 22 comes into contact with the upper and lower stoppers 18B for the fixed contact spring. , 18C, to the right, each of the b contacts 2A, 5A is closed. In the contact spring sets 3, 4, 6, and 7, each fixed contact spring 22 is in contact with the upper and lower stoppers 18B and 18C for the fixed contact spring, and is separated from the corresponding movable contact spring 23.
The contacts 3A, 4A, 6A, 7A are in an open state.
【００１３】上記状態で、コイル２８に直流電流を印加
すると、コイル２８が励磁されて、図２に示すように、
アマチュア３１の上部が鉄心２７に磁気吸着され、アマ
チュア３１の下部が左側に揺動して、作動部材９が復帰
バネ１０に抗して左側に移動し、この作動部材９に係合
された各可動接点バネ２３も左側に揺動する。これによ
り、接点バネセット２，５では、各固定接点バネ２２が
固定接点バネ用上・下ストッパ１８Ｂ，１８Ｃに当接す
る位置まで戻るが、各可動接点バネ２３が更に左側に揺
動して、対応する固定接点バネ２２から離間し、各ｂ接
点２Ａ，５Ａが開離される。When a direct current is applied to the coil 28 in the above state, the coil 28 is excited, and as shown in FIG.
The upper part of the amateur 31 is magnetically attracted to the iron core 27, the lower part of the amateur 31 swings to the left, and the actuating member 9 moves to the left against the return spring 10 and engages with the actuating member 9. The movable contact spring 23 also swings to the left. As a result, in the contact spring sets 2 and 5, each fixed contact spring 22 returns to a position where it comes into contact with the upper and lower stoppers 18B and 18C for fixed contact springs. The fixed contact springs 22 are separated from each other, and the respective b contacts 2A and 5A are separated.
【００１４】又、接点バネセット３，４，６，７では、
各可動接点バネ２３が対応する固定接点バネ２２と当接
した後、更に、固定接点バネ２２を押圧しながら左側に
揺動して、固定接点バネ２２が固定接点バネ用上・下ス
トッパ１８Ｂ，１８Ｃから左側に離間し、各ａ接点３
Ａ，４Ａ，６Ａ，７Ａが閉成される。次に、コイル２８
への通電を停止して、コイル２８を無励磁にすると、復
帰バネ１０により、作動部材９が右側に移動して、各可
動接点バネ２３も右側に揺動し、図１に示すように、各
固定・可動接点バネ２２，２３が原位置に復帰して、接
点バネセット２，５の各ｂ接点２Ａ，５Ａが閉成され、
又、接点バネセット３，４，６，７のａ接点３Ａ，４
Ａ，６Ａ，７Ａが開離される。In the contact spring sets 3, 4, 6, and 7,
After each movable contact spring 23 contacts the corresponding fixed contact spring 22, the fixed contact spring 22 is further swung to the left while pressing the fixed contact spring 22, so that the fixed contact spring 22 is moved to the upper and lower stoppers 18B for the fixed contact spring. 18C to the left, each a contact 3
A, 4A, 6A and 7A are closed. Next, the coil 28
When the energization of the coil 28 is stopped and the coil 28 is de-energized, the return spring 10 moves the operating member 9 to the right, and the movable contact springs 23 also swing to the right, as shown in FIG. The fixed and movable contact springs 22 and 23 return to their original positions, and the b contacts 2A and 5A of the contact spring sets 2 and 5 are closed.
Also, the contact points 3A, 4 of the contact spring sets 3, 4, 6, 7
A, 6A and 7A are released.
【００１５】ところで、例えば、短絡電流等により、コ
イル２８の励磁時に、接点バネセット３のａ接点３Ａの
固定接点部２２Ａと可動接点部２３Ａとが溶着したりす
ることがある。この場合には、図３に示すように、コイ
ル２８を無励磁にすると、復帰バネ１０により、作動部
材９は右側へ移動して、各可動接点バネ２３及び接点バ
ネセット３の固定接点バネ２２も同様に右側へ揺動す
る。この移動過程において、固定接点バネ２２が固定接
点バネ用上・下ストッパ１８Ｂ，１８Ｃと当接して、そ
の揺動が阻止され、これにより、接点バネセット３の固
定接点バネ２２と溶着している可動接点バネ２３も、図
１に示す原位置までの移動が阻止される。By the way, for example, when the coil 28 is excited, the fixed contact portion 22A and the movable contact portion 23A of the a contact 3A of the contact spring set 3 may be welded due to a short-circuit current or the like. In this case, as shown in FIG. 3, when the coil 28 is de-energized, the operating member 9 is moved to the right by the return spring 10, and the movable contact springs 23 and the fixed contact springs 22 of the contact spring set 3 are also moved. Similarly, swing to the right. In this moving process, the fixed contact spring 22 comes into contact with the upper and lower stoppers 18B and 18C for the fixed contact spring, and the swing thereof is prevented, so that the movable contact welded to the fixed contact spring 22 of the contact spring set 3 is moved. The contact spring 23 is also prevented from moving to the original position shown in FIG.
【００１６】これによって、可動接点バネ２３に係合し
ている作動部材９の右側への移動も影響を受けるが、可
動接点バネ２３が弾性変形可能であるため、固定接点バ
ネ２２が固定接点バネ用上・下ストッパ１８Ｂ，１８Ｃ
と当接した時点から、作動部材９は、更に、接点バネセ
ット３の可動接点バネ２３の撓み分だけ移動することと
なる。然しながら、作動部材９の移動量は、当然、コイ
ル２８の通常の通電停止時よりも小さな移動量にとどま
る。上記のように、固定接点バネ２２が固定接点バネ用
上・下ストッパ１８Ｂ，１８Ｃと当接した時点から、作
動部材９が、更に、接点バネセット３の可動接点バネ２
３の撓み分だけ移動することから、接点バネセット４，
６，７のａ接点４Ａ，６Ａ，７Ａは開離される。Although the rightward movement of the operating member 9 engaged with the movable contact spring 23 is thereby affected, since the movable contact spring 23 is elastically deformable, the fixed contact spring 22 is Upper and lower stoppers 18B, 18C
From the point of contact, the operating member 9 further moves by the amount of bending of the movable contact spring 23 of the contact spring set 3. However, the moving amount of the operating member 9 is naturally smaller than the moving amount when the coil 28 is normally turned off. As described above, when the fixed contact spring 22 contacts the upper and lower stoppers 18B and 18C for the fixed contact spring, the operating member 9 further moves the movable contact spring 2 of the contact spring set 3.
3, the contact spring set 4,
6, 7a contacts 4A, 6A, 7A are opened.
【００１７】又、上記のように、作動部材９の移動量
が、コイル２８の通常の通電停止時よりも小さな移動量
にとどまることから、接点バネセット２，５の各ｂ接点
２Ａ，５Ａも閉成されず、開離状態にとどまる。尚、上
記の例はａ接点が溶着した場合の一例であるが、上記と
は、逆に、コイル２８の無励磁時に、例えば、ｂ接点２
Ａの固定接点部２２Ａと可動接点部２３Ａとが溶着した
場合でも、コイル２８を励磁した際に、他のｂ接点５Ａ
やａ接点３Ａ，４Ａ，６Ａ，７Ａは閉成されず、開離状
態となる。上記のように、コイル２８の励磁時又は無励
磁時に、短絡電流等により、一つの接点バネセット２〜
７の両接点バネ２２，２３が溶着した場合に、コイル２
８の励磁状態を上記溶着時とは反対にしても、他の接点
バネセット２〜７の両接点バネ２２，２３が当接せず、
電磁継電器により制御する機器が誤動作する惧れは少な
い。Further, as described above, since the moving amount of the operating member 9 is smaller than the moving amount when the coil 28 is normally turned off, the b contacts 2A and 5A of the contact spring sets 2 and 5 are also closed. It is not formed and remains in the separated state. Note that the above example is an example where the a contact is welded. Conversely, when the coil 28 is not excited, for example, the b contact 2
A, even if the fixed contact portion 22A and the movable contact portion 23A are welded, when the coil 28 is excited, the other b contact 5A
And the a contacts 3A, 4A, 6A, 7A are not closed and are in an open state. As described above, when the coil 28 is excited or not excited, one contact spring set 2 to 2
When the two contact springs 22 and 23 are welded, the coil 2
Even if the excitation state of 8 is opposite to that at the time of welding, the two contact springs 22 and 23 of the other contact spring sets 2 to 7 do not abut,
It is unlikely that the device controlled by the electromagnetic relay malfunctions.
【００１８】又、上記溶着等の原因により、万一、接点
バネセット２〜７の固定・可動接点バネ２２，２３が破
損しても、各接点バネセット２〜７はハウジング１の各
接点バネセット用チャンバー２０に夫々別個に内有され
て、各チャンバー２０の前方又は後方側の開口が保護カ
バー１１により閉塞されているので、固定・可動接点バ
ネ２２，２３の破片は接点バネセット用チャンバー２０
内にとどまって、他のチャンバー２０内に侵入しにく
い。従って、固定・可動接点バネ２２，２３の破片によ
り、他の接点バネセット２〜７の両接点バネ２２，２３
が短絡したりする等の惧れは少なく、上記破片が他の接
点バネセット２〜７や電磁石装置８のコイル２８に悪影
響を及ぼす惧れは少ない。Even if the fixed / movable contact springs 22 and 23 of the contact spring sets 2 to 7 are damaged due to the above-mentioned welding or the like, the contact spring sets 2 to 7 are kept in the respective contact spring set chambers of the housing 1. 20, the opening of the front or rear side of each chamber 20 is closed by the protective cover 11, so that the fragments of the fixed and movable contact springs 22 and 23 are removed from the contact spring setting chamber 20.
, And hardly enter the other chamber 20. Therefore, both the contact springs 22 and 23 of the other contact spring sets 2 to 7 are generated by the fragments of the fixed and movable contact springs 22 and 23.
Are less likely to short-circuit, and the fragments are less likely to adversely affect the other contact spring sets 2 to 7 and the coil 28 of the electromagnet device 8.
【００１９】更に、何らかの原因で、復帰バネ１０が破
損する場合がある。この場合には、図４に示すように、
コイル２８を無励磁にすると、各接点バネセット２〜７
の各可動接点バネ２３が、鉛直姿勢の自由状態になっ
て、各固定接点バネ２２から離間し、各ｂ接点２Ａ，５
Ａ及び各ａ接点３Ａ，４Ａ，６Ａ，７Ａは開離状態とな
る。上記のように、復帰バネ１０が破損しても、可動接
点バネ２３が固定接点バネ２２に不慮に当接することは
なく、電磁継電器により制御する機器の誤動作を招来す
る惧れを少なくできる。Further, the return spring 10 may be damaged for some reason. In this case, as shown in FIG.
When the coil 28 is de-energized, each of the contact spring sets 2 to 7
The movable contact springs 23 are in a free state in a vertical posture, are separated from the fixed contact springs 22, and each of the b contacts 2A, 5
A and the respective a contacts 3A, 4A, 6A, 7A are in an open state. As described above, even if the return spring 10 is damaged, the movable contact spring 23 does not accidentally come into contact with the fixed contact spring 22, and it is possible to reduce the possibility of causing malfunction of a device controlled by the electromagnetic relay.
【００２０】次に、上記電磁継電器を実際に使用した制
御回路を図８に基づき説明する。図８は、上記電磁継電
器を利用した電動モータ制御回路で、この回路は、操作
用回路３５と、モータ駆動回路３６と、報知器駆動回路
３７とを並列に接続することで構成されている。操作用
回路３５は、常閉型のストップスイッチ３９と、並列接
続された常開型のスタートスイッチ４０及び電磁継電器
のａ接点４Ａと、コイル２８とが直列接続されている。
モータ駆動回路３６は、電磁継電器のａ接点３Ａと、電
動モータＭとが直列接続されている。Next, a control circuit using the above-mentioned electromagnetic relay will be described with reference to FIG. FIG. 8 shows an electric motor control circuit using the above-mentioned electromagnetic relay. This circuit is configured by connecting an operation circuit 35, a motor drive circuit 36, and an alarm drive circuit 37 in parallel. In the operation circuit 35, a normally-closed stop switch 39, a normally-opened start switch 40 connected in parallel, a contact 4A of an electromagnetic relay, and the coil 28 are connected in series.
In the motor drive circuit 36, the a contact 3A of the electromagnetic relay and the electric motor M are connected in series.
【００２１】報知器駆動回路３７は、電磁継電器のｂ接
点２Ａと、ランプとして例示する電磁継電器監視用報知
器Ｌとが直列接続されて、接点バネセット２が、報知器
駆動回路３７の開閉スイッチとされている。上記制御回
路によれば、電動モータＭを駆動する際には、スタート
スイッチ４０を閉成操作する。これにより、上記同様
に、コイル２８に直流電流が印加され、アマチュア３１
が作動して、作動部材９が左側に移動し、可動接点バネ
２３が左側に揺動して、ｂ接点２Ａが開離され、又、ａ
接点３Ａ，４Ａが閉成される。The alarm drive circuit 37 has an electromagnetic relay b contact 2A and an electromagnetic relay monitoring alarm L exemplified as a lamp connected in series, and the contact spring set 2 operates as an open / close switch of the alarm drive circuit 37. Have been. According to the control circuit, when the electric motor M is driven, the start switch 40 is closed. As a result, a DC current is applied to the coil 28 and the
Operates, the operating member 9 moves to the left, the movable contact spring 23 swings to the left, the b contact 2A is opened, and a
Contacts 3A and 4A are closed.
【００２２】これによって、操作用回路３５で自己保持
回路が構成され、スタートスイッチ４０の操作を解除し
ても、操作用回路３５は閉回路を維持すると共に、モー
タ駆動回路３６も閉回路を維持して、電動モータＭが駆
動されるが、報知器Ｌは駆動されない。そして、電動モ
ータＭを停止する際には、ストップスイッチ３９を開離
操作して、操作用回路３５を開回路とし、コイル２８及
びａ接点４Ａへの通電を停止して、コイル２８を無励磁
とし、作動部材９を復帰バネ１０により右方向に移動さ
せて、ｂ接点２Ａを閉成させ、又、ａ接点３Ａ，４Ａを
開離させる。As a result, a self-holding circuit is constituted by the operation circuit 35. Even when the operation of the start switch 40 is released, the operation circuit 35 maintains the closed circuit and the motor drive circuit 36 maintains the closed circuit. Then, the electric motor M is driven, but the alarm L is not driven. Then, when stopping the electric motor M, the stop switch 39 is opened to open the operation circuit 35, the energization to the coil 28 and the a contact 4A is stopped, and the coil 28 is de-energized. Then, the operating member 9 is moved rightward by the return spring 10 to close the b contact 2A and separate the a contacts 3A and 4A.
【００２３】これにより、電動モータＭが停止すると共
に、報知器Ｌが点灯する。そして、例えば、コイル２８
への通電時に、何らかの過負荷により、ａ接点３Ａが溶
着した場合に、ストップスイッチ３９を開離操作する
と、コイル２８及びａ接点４Ａへの通電が停止されて、
コイル２８が無励磁となり、図３に示すように、復帰バ
ネ１０により、作動部材９が右側に移動し、ａ接点３Ａ
のみが溶着のため閉成状態を維持するが、ｂ接点２Ａ、
ａ接点４Ａのいずれもが、開離される。これにより、電
動モータＭは停止しないが、正常であれば、点灯すべき
報知器Ｌが点灯しないので、オペレータは、装置に異常
が発生したことを知ることができる。As a result, the electric motor M stops, and the alarm L lights up. And, for example, the coil 28
If the stop switch 39 is opened when the a-contact 3A is welded due to some overload at the time of power supply to the coil 28, the power supply to the coil 28 and the a-contact 4A is stopped.
The coil 28 is de-energized, and as shown in FIG. 3, the operating member 9 is moved to the right by the return spring 10, and the a contact 3A
Only the closed state is maintained due to welding, but the b contact 2A,
All of the a contacts 4A are opened. Thus, the electric motor M does not stop, but if it is normal, the annunciator L to be turned on does not turn on, so that the operator can know that an abnormality has occurred in the apparatus.
【００２４】又、コイル２８への通電時に、復帰バネ１
０が破損した場合には、ストップスイッチ３９を開離操
作すると、コイル２８及びａ接点４Ａへの通電が停止さ
れて、コイル２８が無励磁となり、各可動接点バネ２３
が、鉛直姿勢の自由状態となって、各固定接点バネ２２
から開離した状態となる。これにより、ｂ接点２Ａ、ａ
接点３Ａ，４Ａのいずれもが開離状態となって、操作用
回路３５が開回路となり、電動モータＭが不慮に再駆動
されないと共に、報知器Ｌが点灯せず、オペレータに異
常を報知する。When the coil 28 is energized, the return spring 1
In the case where 0 is damaged, when the stop switch 39 is opened, the energization of the coil 28 and the a contact 4A is stopped, the coil 28 is de-energized, and each movable contact spring 23
Is in a free state in the vertical posture, and each fixed contact spring 22
It is in a state of being separated from. Thereby, the b contacts 2A, a
When both of the contacts 3A and 4A are opened, the operation circuit 35 becomes an open circuit, the electric motor M is not accidentally re-driven, the alarm L is not turned on, and the operator is notified of the abnormality.
【００２５】[0025]
【発明の効果】以上詳述したように、本発明によれば、
接点バネセットの両接点バネが溶着した場合に、電磁石
装置に対する通電状態を上記溶着時とは反対にしても、
溶着した固定接点バネが、電磁石装置の無励磁時の位置
から対応する可動接点バネ側ヘ揺動することを確実に阻
止でぎる。これにより、他の接点バネセットの両接点バ
ネを離間した状態とできて、電磁継電器により制御する
機器が誤動作する惧れをきわめて少なくできる。又、各
可動接点バネを、作動部材に固定せず、単に係合するよ
うにしたので、各可動接点バネの作動部材に対する組付
けを容易に行え、接点バネセットの数が多い場合でも、
電磁継電器の組立を容易に行える。更に、作動部材の係
合部に、各可動接点バネの上下方向中間部が左右方向に
相対移動不能に係合されたにもかかわらず、係合部の左
右方向の幅が、下方に向かうに従って、大とされたの
で、上記係合が、作動部材による可動接点バネのスムー
ズな揺動に支障を及ぼすことはない。又、可動接点バネ
が、自由状態で、対応する固定接点バネから離間するよ
うにされたので、復帰バネが破損した場合に、電磁石装
置を無励磁としても、可動接点バネが固定接点バネに不
慮に当接せず、電磁継電器により制御する機器が誤動作
する惧れが少ない。請求項２によれば、接点バネセット
の両接点バネの溶着を検出でき、この溶着を外部から容
易に知ることができる。As described in detail above, according to the present invention,
When both contact springs of the contact spring set are welded, even if the energized state to the electromagnet device is opposite to that at the time of welding,
It is possible to reliably prevent the welded fixed contact spring from swinging from the position where the electromagnet device is not excited to the corresponding movable contact spring side. As a result, the two contact springs of the other contact spring sets can be separated from each other, and the risk of malfunction of the device controlled by the electromagnetic relay can be reduced. In addition, since each movable contact spring is not fixed to the operating member but is simply engaged, the assembling of each movable contact spring to the operating member can be easily performed, and even when the number of contact spring sets is large,
The electromagnetic relay can be easily assembled. Furthermore, even though the vertical intermediate portion of each movable contact spring is engaged with the engaging portion of the operating member so as to be relatively immovable in the left-right direction, the width of the engaging portion in the left-right direction decreases downward. , The engagement does not hinder the smooth swinging of the movable contact spring by the operating member. Also, since the movable contact spring is separated from the corresponding fixed contact spring in a free state, even if the electromagnet device is de-energized when the return spring is damaged, the movable contact spring is inadvertent to the fixed contact spring. The device controlled by the electromagnetic relay is less likely to malfunction without being in contact with the device. According to the second aspect, the welding of the two contact springs of the contact spring set can be detected, and this welding can be easily known from the outside.
【図１】本発明の一実施例を示す正面断面図である。FIG. 1 is a front sectional view showing an embodiment of the present invention.
【図２】本発明の一実施例を示す正面断面図である。FIG. 2 is a front sectional view showing one embodiment of the present invention.
【図３】本発明の一実施例を示す正面断面図である。FIG. 3 is a front sectional view showing one embodiment of the present invention.
【図４】本発明の一実施例を示す正面断面図である。FIG. 4 is a front sectional view showing one embodiment of the present invention.
【図５】図１のＸ−Ｘ線矢視断面図である。FIG. 5 is a sectional view taken along line XX of FIG. 1;
【図６】図１のＹ−Ｙ線矢視断面図である。FIG. 6 is a sectional view taken along line YY of FIG. 1;
【図７】図１のＺ−Ｚ線矢視断面図である。FIG. 7 is a sectional view taken along the line ZZ in FIG. 1;
【図８】本発明の一実施例を示す回路図である。FIG. 8 is a circuit diagram showing one embodiment of the present invention.
１…ハウジング、２〜７…接点バネセット、２Ａ，５Ａ
…ｂ接点、３Ａ，４Ａ，６Ａ，７Ａ…ａ接点、８…電磁
石装置、９…作動部材、９Ｄ…係合凹部、１０…復帰バ
ネ、１１…保護カバー、１４，１５…右・左外側壁、１
６…遮断壁、１７…隔壁、１８…中間壁、１８Ｂ，１８
Ｃ…固定接点バネ用上・下ストッパ、２０…接点バネセ
ット用チャンバー、２０Ａ，２０Ｂ…固定・可動接点バ
ネ用チャンバー、２２，２３…固定・可動接点バネ、２
２Ａ，２３Ａ…固定・可動接点部、３５…操作用回路、
３６…モータ駆動回路、３７…報知器駆動回路、３９…
ストップスイッチ、４０…スタートスイッチ、Ｍ…電動
モータ、Ｌ…電磁継電器監視用報知器。1: Housing, 2-7: Contact spring set, 2A, 5A
... b contact, 3A, 4A, 6A, 7A ... a contact, 8 ... electromagnet device, 9 ... operating member, 9D ... engaging recess, 10 ... return spring, 11 ... protective cover, 14, 15 ... right / left outer wall , 1
6 ... blocking wall, 17 ... partition wall, 18 ... intermediate wall, 18B, 18
C: upper and lower stoppers for fixed contact springs, 20: chambers for setting contact springs, 20A, 20B: chambers for fixed and movable contact springs, 22, 23 ... fixed and movable contact springs, 2
2A, 23A: fixed / movable contact portion, 35: operation circuit,
36 ... motor drive circuit, 37 ... alarm drive circuit, 39 ...
Stop switch, 40: Start switch, M: Electric motor, L: Electromagnetic relay monitoring alarm.
Claims (2)
ハウジングと、 ハウジングに立設されて、左右方向に対向する固定
接点バネと可動接点バネからなる複数の接点バネセット
と、 ハウジングと左右方向に並設された電磁石装置と、 電磁石装置の作動により、各可動接点バネを対応す
る固定接点バネに接離させる作動部材と、 作動部材を、電磁石装置による作動方向とは反対方
向に付勢する復帰バネと、 下方にのみ開口する中空直方体形状とされて、ハウ
ジング、接点バネセット、電磁石装置、作動部材、復帰
バネに上方から外嵌されて、これらをカバーする保護カ
バーを有し、 ハウジングに、 ・ 作動部材の上方と下方に位置して、固定接点バネが
電磁石装置の無励磁時の位置から対応する可動接点バネ
側へ揺動することを阻止する上下一対のストッパが、 各固定接点バネに対応して、形成され、 作動部材に、各可動接点バネの上下方向中間部が左右方
向に相対移動不能に係合される係合部が形成され、 係合部の左右方向の幅が、下方に向かうに従って、大と
され、 可動接点バネが、自由状態で、対応する固定接点バネか
ら離間するようにされたことを特徴とする電磁継電器。1. A housing made of an insulating material and integrally formed; a plurality of contact spring sets upright standing on the housing and opposed in the left-right direction, the fixed contact springs and the movable contact springs; An electromagnet device provided, an operating member for bringing each movable contact spring into and out of contact with a corresponding fixed contact spring by operation of the electromagnet device, and a return spring for urging the operating member in a direction opposite to the operating direction by the electromagnet device. And a protective cover that covers the housing, the contact spring set, the electromagnet device, the operating member, and the return spring from above, and covers the housing, the contact spring set, the electromagnet device, the operating member, and the return spring. The upper and lower members are located above and below the member to prevent the fixed contact spring from swinging from the position of the electromagnet device when the magnet is not excited to the corresponding movable contact spring. A stopper is formed corresponding to each fixed contact spring, and an engaging portion is formed on the operating member so that a vertically intermediate portion of each movable contact spring is engaged with the movable contact spring so as to be relatively immovable in the left-right direction. An electromagnetic relay characterized in that the width in the left-right direction of the portion is increased as it goes downward, and the movable contact spring is separated from the corresponding fixed contact spring in a free state.
用報知器の駆動回路における開閉スイッチとされた請求
項１記載の電磁継電器。2. The electromagnetic relay according to claim 1, wherein one contact spring set is an open / close switch in a drive circuit of the electromagnetic relay monitoring alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4351704A JP2584399B2 (en) | 1992-12-07 | 1992-12-07 | Electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4351704A JP2584399B2 (en) | 1992-12-07 | 1992-12-07 | Electromagnetic relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06176675A JPH06176675A (en) | 1994-06-24 |
| JP2584399B2 true JP2584399B2 (en) | 1997-02-26 |
Family
ID=18419056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4351704A Expired - Fee Related JP2584399B2 (en) | 1992-12-07 | 1992-12-07 | Electromagnetic relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2584399B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011129349A1 (en) | 2010-04-16 | 2011-10-20 | 国立大学法人長岡技術科学大学 | Relay, control circuit, and method for controlling control circuit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4523423B2 (en) * | 2005-01-11 | 2010-08-11 | Ｉｄｅｃ株式会社 | relay |
| DE102012017157A1 (en) * | 2012-08-30 | 2014-03-06 | Hengstler Gmbh | Relay with modified force-displacement characteristic |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59158041A (en) * | 1983-02-28 | 1984-09-07 | 松下電工株式会社 | Mbb contact unit |
| DE3402650A1 (en) * | 1984-01-26 | 1985-08-01 | Hengstler GmbH, Geschäftsbereich Haller-Relais, 7209 Wehingen | Contact spring block for relays having a housing cap |
| JPS6371290A (en) * | 1986-09-13 | 1988-03-31 | 株式会社東芝 | Detergent feeder of washing machine |
| JPH01104630U (en) * | 1987-12-29 | 1989-07-14 |
-
1992
- 1992-12-07 JP JP4351704A patent/JP2584399B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| ***国特許出願公開３４０２６５０（１９８５） |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011129349A1 (en) | 2010-04-16 | 2011-10-20 | 国立大学法人長岡技術科学大学 | Relay, control circuit, and method for controlling control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06176675A (en) | 1994-06-24 |
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