JPS5918815B2 - polarized relay - Google Patents
polarized relayInfo
- Publication number
- JPS5918815B2 JPS5918815B2 JP10379076A JP10379076A JPS5918815B2 JP S5918815 B2 JPS5918815 B2 JP S5918815B2 JP 10379076 A JP10379076 A JP 10379076A JP 10379076 A JP10379076 A JP 10379076A JP S5918815 B2 JPS5918815 B2 JP S5918815B2
- Authority
- JP
- Japan
- Prior art keywords
- movable iron
- iron piece
- magnetic pole
- permanent magnet
- yoke
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 64
- 229910052742 iron Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims 2
- 239000011800 void material Substances 0.000 claims 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 12
- 230000004907 flux Effects 0.000 description 9
- 238000013459 approach Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Description
【発明の詳細な説明】
従来の所謂単安定型の有極リレーは、第５図の如く、ケ
ース１内に配設せるコ字状のヨーク２の、中央部２ａに
装着したコイル枠３にコイル４を巻装し、両端に同一極
性の磁極を有して中間部に異なる極性の磁極を有する永
久磁石５をヨーク２の両側膜２ａ、２’ｂ間に配設して
永久磁石５の一端の磁極を側脚２ｂに当接して他端の磁
極と側脚２’ｂ間に空隙ａを設け、永久磁石５の中間部
の磁極に当接装着せる磁性体よりなる断面半円形の支持
金具６に可動鉄片７の中心下面の凹部７ａを係合枢支し
て可動鉄片７の両端下面を側脚２ａ、２’ｂの先端に対
向し、接点板バネ８ ａ＋ ８ ｂ ｓ ８’ａ ＞８
’ｂをそれぞれ有して復帰バネ８ｃ、８′ｃをそれぞれ
有するＥ字型の板バネ８，８′の一端８ｄ、８′ｄを前
記可動鉄片７の中央部上面に固定せる絶縁体９にそれぞ
れ固定し、接点板バネ８ａ、８ｂ ｊ ８’ａｔ８’ｂ
のそれぞれの先端下面に固着せる可動接点１０ａ、１０
ｂ１１０’ａ、１０’ｂのそれぞれをケース１に固定せ
る固定接点板１１ ａ 、 １ ｌ ｂ。[Detailed Description of the Invention] As shown in FIG. 5, a conventional so-called monostable type polarized relay has a coil frame 3 attached to a central portion 2a of a U-shaped yoke 2 disposed inside a case 1. A coil 4 is wound around the permanent magnet 5, which has magnetic poles of the same polarity at both ends and a magnetic pole of a different polarity in the middle part, and is arranged between the membranes 2a and 2'b on both sides of the yoke 2. A support with a semicircular cross section made of a magnetic material that is attached to the magnetic pole in the middle of the permanent magnet 5 by making a gap a between the magnetic pole at one end and the side leg 2'b by abutting the magnetic pole at one end on the side leg 2'b. The metal fitting 6 engages and pivots the recess 7a on the lower center of the movable iron piece 7 so that the lower surfaces of both ends of the movable iron piece 7 face the tips of the side legs 2a and 2'b, and the contact plate spring 8a+8bs8'a >8
E-shaped leaf springs 8, 8' having return springs 8c, 8'c, respectively; Fix each contact plate spring 8a, 8b j 8'at8'b
Movable contacts 10a, 10 fixed to the bottom surface of each tip of
Fixed contact plates 11 a and 1 l b for fixing b110'a and 10'b to case 1, respectively.
１１’ａ 、 １ ｉ’ｂにそれぞれ固着した固定接点
１２ａ。Fixed contacts 12a are fixed to 11'a and 1i'b, respectively.
１２ｂ、１２’ａ、１２’ｂに接離するよう対向して可
動鉄片Ｔのシーソー運動によって動作するスイッチ１３
、１３’を構成し、且つ復帰バネ８ｃ、８’ｃのそれ
ぞれの先端下面をケース１に突設せる突起１４．１４’
の先端に対向して復帰バネ８ ｃ 、 ８’ｃのバネ力
が可動鉄片７の両端下面を側脚２ｂ、２′ｂの先端より
ほり等距離はなれるように作用するようにしてなるもの
である。12b, 12'a, 12'b, the switch 13 is operated by the seesaw movement of movable iron pieces T that face each other so as to approach and separate from them.
, 13', and protrudes from the bottom surface of each tip of the return springs 8c, 8'c into the case 1.
The spring force of the return springs 8c, 8'c is applied to the lower surface of both ends of the movable iron piece 7 so as to be equidistant from the tips of the side legs 2b, 2'b. be.
而して、第５図口において、側脚２ｂをＳ極に磁化して
側脚２’ｂをＮ極に磁化するようコイル４に電流を流す
と、主に磁路１５を通る永久磁石５の磁束の側脚２ｂの
先端と可動鉄片７の左側下面間の磁束はコイル４の電流
にて発生して磁路１７を通る磁束にて弱められて、同時
に、磁路１６を通る永久磁石５の磁束の側脚２’ｂの先
端と可動鉄片７の右端下面間の磁束はコイル４の電流に
て発生して磁路１７を通る磁束にて強められるため、復
帰バネ８’ｃの先端下面が突起１４′の先端に圧接する
と共にその時の復帰バネ８′ｃのバネ力に打勝って可動
鉄片７の右端下側か側脚２’ｂの先端に当接吸着するよ
う可動鉄片７は支持金具６を中心に時計方向に回動し、
接点１０ａ 、１０ｂは接点１０ａ。5, when a current is applied to the coil 4 to magnetize the side leg 2b to the S pole and the side leg 2'b to the N pole, the permanent magnet 5 mainly passes through the magnetic path 15. The magnetic flux between the tip of the side leg 2b and the lower left side of the movable iron piece 7 is generated by the current in the coil 4 and is weakened by the magnetic flux passing through the magnetic path 17, and at the same time, the magnetic flux passing through the magnetic path 16 is weakened by the permanent magnet 5. The magnetic flux between the tip of the side leg 2'b and the lower surface of the right end of the movable iron piece 7 is generated by the current of the coil 4 and is strengthened by the magnetic flux passing through the magnetic path 17, so that the lower surface of the tip of the return spring 8'c The movable iron piece 7 is supported so that it comes into pressure contact with the tip of the protrusion 14', overcomes the spring force of the return spring 8'c at that time, and comes into contact with the lower right end of the movable iron piece 7 or the tip of the side leg 2'b. Rotate clockwise around the metal fitting 6,
Contacts 10a and 10b are contacts 10a.
１２ｂより離れてスイッチ１３は開成して、接点１０’
ａ 、 １０’ｂは接点１２’ａ、１２’ｂに接触して
スイッチ１３′は閉成する。12b, the switch 13 is opened and the contact 10'
a and 10'b contact contacts 12'a and 12'b, and switch 13' is closed.
その後、コイル４の電流を遮断すると、永久磁石５の一
端の磁極は側脚２ｂに当接していて他端の磁極と側脚７
ｂ間には空隙ａがあるために、永久磁石５の磁路１６を
通る磁束の側脚２’ｂの先端と可動鉄片７の右端下面間
の磁束は少なく、先端下面が突起１４′の先端に圧接し
ている復帰バネ＆’ｃのバネ力により可動鉄片Ｔの右端
下面は側脚２’ｂの先端より離れて可動鉄片７は支持金
具６を中心に反時計方向に回動し、可動鉄片７の左端下
面が側脚２ｂの先端に接近することにより永久磁石５の
磁路１５を通る磁束は大きくなり、復帰バネ８ｃの先端
下面は突起１４に圧接すると共にその時の復帰バネ８ｃ
のバネ力に打勝って可動鉄片７の左端下面が側脚２ｂの
先端に当接吸着するよう可動鉄片７は支持金具６を中心
に更に反時計方向に回動し、接点１０ａ、１０ｂは接点
１２ａ。After that, when the current in the coil 4 is cut off, the magnetic pole at one end of the permanent magnet 5 is in contact with the side leg 2b, and the magnetic pole at the other end and the side leg 7
Since there is a gap a between b, the magnetic flux passing through the magnetic path 16 of the permanent magnet 5 between the tip of the side leg 2'b and the lower surface of the right end of the movable iron piece 7 is small, and the lower surface of the tip is the tip of the protrusion 14'. Due to the spring force of the return spring &'c which is in pressure contact with As the lower surface of the left end of the iron piece 7 approaches the tip of the side leg 2b, the magnetic flux passing through the magnetic path 15 of the permanent magnet 5 increases, and the lower surface of the tip of the return spring 8c comes into pressure contact with the protrusion 14, and the return spring 8c at that time
The movable iron piece 7 further rotates counterclockwise around the support fitting 6 so that the lower surface of the left end of the movable iron piece 7 contacts and attracts the tip of the side leg 2b by overcoming the spring force of the contact points 10a and 10b. 12a.
１２ｂに接触してスイッチ１３を閉成し、接点１０’ａ
、１σｂは接点１２’ ａ ＞’ １２’ｂより離れて
スイッチ１ぎは開成するもので、コイル４の電流の遮断
時、第５図口の状態が唯一の安定状態になり、所謂単安
定型の有極リレーが実現されるものである。12b and closes the switch 13, contact 10'a
, 1σb is the one in which the first switch is opened when the contact 12' a >'12' b is separated, and when the current in the coil 4 is cut off, the state at the opening in Figure 5 is the only stable state, which is the so-called monostable type. A polarized relay is realized.
ところが、コイル４に電流を流して可動鉄片７の右端下
面が側脚２’ｂの先端が吸着している状態において、コ
イル４の電流を遮断したとき、可動鉄片７の右端下面が
側脚７ｂの先端に当接しているので、第５図ハの如く、
磁路１８を流れる永久磁石５の磁束が大きく、可動鉄片
７の右端下面が側脚２’ｂの先端より離れ難く単安定動
作し難い欠点があった。However, when current is applied to the coil 4 and the lower surface of the right end of the movable iron piece 7 is attracted to the tip of the side leg 2'b, when the current in the coil 4 is cut off, the lower surface of the right end of the movable iron piece 7 is attracted to the lower surface of the right end of the side leg 7b. Since it is in contact with the tip of , as shown in Figure 5 C,
The magnetic flux of the permanent magnet 5 flowing through the magnetic path 18 is large, and the lower surface of the right end of the movable iron piece 7 is difficult to separate from the tip of the side leg 2'b, making it difficult to perform monostable operation.
本発明は上記のような従来の欠点を除去するものであっ
て、以下特定発明の実施例を第１図及び第２図について
説明すると、（従来と同一部品には同一符号を用いる。The present invention eliminates the above-mentioned drawbacks of the prior art, and a specific embodiment of the present invention will be described below with reference to FIGS. 1 and 2. (The same reference numerals are used for the same parts as in the prior art.
）、１はケース、２は中央部２ａに空隙又は断面小部す
を有するコ字状のヨークで、その中央部２ａに装着せる
コイル枠３にコイル４が巻装され、ヨーク２はケース１
内に配設される。), 1 is a case, 2 is a U-shaped yoke with a gap or a small section in the central part 2a, a coil 4 is wound around a coil frame 3 attached to the central part 2a, and the yoke 2 is attached to the case 1.
located within.
５は両端に同一極性の磁極を有して中間部に異なる極性
の磁極を有する永久磁石で、前記ヨーク２の両側膜２ｂ
、２’ｂ間に配設され、その一端の磁極は側脚２ｂに当
接されて他端の磁極と側脚２’ｂ間には空隙ａが設けら
れる。Reference numeral 5 denotes a permanent magnet having magnetic poles of the same polarity at both ends and a magnetic pole of a different polarity in the middle, which is attached to both side films 2b of the yoke 2.
, 2'b, the magnetic pole at one end is brought into contact with the side leg 2b, and a gap a is provided between the magnetic pole at the other end and the side leg 2'b.
６は永久磁石５の中間部の磁極に当接して両側脚２ ｂ
、 ２’ｂ間の中心部に配設せる磁性体よりなる断面
半円型の支持金具、７は中心下面に凹部７ａを有する可
動鉄片で、その凹部７ａを支持金具６に係合枢支して可
動紛片７は支持金具６にシーソー運動するよう支持され
て、その両端下面は前記側脚２ｂ。6 is in contact with the magnetic pole in the middle part of the permanent magnet 5, and both legs 2 b
, 2'b is a supporting metal piece with a semicircular cross section made of a magnetic material, and 7 is a movable iron piece having a concave portion 7a on the bottom surface of the center, and the concave portion 7a is engaged with the supporting metal piece 6 for pivotal support. The movable piece 7 is supported by the support fitting 6 so as to see-saw, and the lower surfaces of both ends thereof are connected to the side legs 2b.
２’ｂの先端に対向される。It is opposed to the tip of 2'b.
１３ 、１３’は可動鉄片７のシーソー運動によって動
作するスイッチで、接点板バネ８ ａ ｔ ８ｂ、 ８
’ａ 、 ８′ｂを有して復帰バネ８ｃ、８’ｃをそれ
ぞれ有するＥ字型の板バネ８．８′の中央部８ｄ、８’
ｄを前記可動鉄片７の上面中央部に固定せる絶縁体９に
固定し、而して、接点板バネ８ ａｔ ８ ｂ ｓ ＆
’ ａ 、８’ ｂのそれぞれの先端下面に固着した可
動接点１０ａ、１０ｂ。13 and 13' are switches operated by seesaw movement of the movable iron piece 7, and contact plate springs 8a, 8b, 8
E-shaped leaf spring 8.8' having return springs 8c, 8'c with return springs 8c, 8'c, central portions 8d, 8' of 8';
d is fixed to an insulator 9 fixed to the center of the upper surface of the movable iron piece 7, and the contact plate springs 8 at 8 b s &
Movable contacts 10a and 10b are fixed to the lower surfaces of the tips of 'a' and 8'b, respectively.
１σａ、１σｂをケース１に固定せる固定接点板１１
ａ 、 １１ ｂｌｌ １’ａ 、 １１’ｂのそれぞ
れに固着した固定接点１２ａ、１２ｂ、１２’ａ、１２
’ｂに接離するよう対向してスイッチ１３ 、１３’は
構成され、且つ復帰バネ８ｃ、８′ｃのそれぞれの先端
下面はケース１に突設せる突起１４ 、１４’に対向さ
れ、復帰バネ８ｃ、８′ｃのバネ力により可動鉄片７の
両端下面が側脚２ ｂ 、 ２’ｂの先端よりほぼ等距
離はなれるようになされるものである。Fixed contact plate 11 that fixes 1σa and 1σb to case 1
Fixed contacts 12a, 12b, 12'a, 12 fixed to each of a, 11 bll 1'a, 11'b
The switches 13 and 13' are configured to face each other so as to move toward and away from the return springs 8c and 8'c. The spring forces of 8c and 8'c allow the lower surfaces of both ends of the movable iron piece 7 to be separated from the tips of the side legs 2b and 2'b by approximately the same distance.
本発明は上記のような構成で、従来の単安定型の有極リ
レーと同様に、コイル４に電流を流して可動鉄片７の右
端下面を側脚２’ｂの先端に吸着すると、スイッチ１３
は開成してスイッチ１３′は閉成し、その後、コイル４
の電流を遮断すると、スイッチ１３は閉成してスイッチ
１３′は開成するものである。The present invention has the above-described configuration, and as in the conventional monostable polarized relay, when a current is applied to the coil 4 and the lower right end of the movable iron piece 7 is attracted to the tip of the side leg 2'b, the switch 13
is opened, switch 13' is closed, and then coil 4 is closed.
When the current is cut off, the switch 13 is closed and the switch 13' is opened.
そして、コイル４に電流を流して可動鉄片７の右端下面
を側脚２’ｂに却着している状態において、コイル４の
電流を遮断したとき、可動鉄片７の右端下面が側脚７ｂ
の先端に当接していて、第３図の如く、永久磁石５によ
る磁束が磁路１８に流れるが、ヨーク２の中央道２ａに
は空隙又は断面縮小部すがあるから、上記磁路、１８を
通る永久磁石は頗る少なく、可動鉄片７の右端下面は側
脚７ｂの先端より離れやすくなり、確実に単安定動作す
るようになる効果がある。Then, when current is applied to the coil 4 and the lower surface of the right end of the movable iron piece 7 is brought to the side leg 2'b, when the current of the coil 4 is cut off, the lower surface of the right end of the movable iron piece 7 is brought to the side leg 7b.
As shown in FIG. 3, the magnetic flux caused by the permanent magnet 5 flows through the magnetic path 18. However, since there is a gap or a reduced section in the central path 2a of the yoke 2, the magnetic path 18 The number of permanent magnets passing through the movable iron piece 7 is extremely small, and the lower surface of the right end of the movable iron piece 7 is easily separated from the tip of the side leg 7b, which has the effect of ensuring monostable operation.
第４図は併合発明の１実施例を示すもので、第２図にお
いて、永久磁石５の代りに、両端に異なる極性の磁極を
有する磁極を永久磁石５′を用い、その一端の磁極を側
脚２ｂに当接し、他端の磁極を側脚２ｂ、２’ｂの中心
部に位置せしめて支持金具６に当接してなるものであり
、第２図の場合と同様の作用効果を奏するものである。FIG. 4 shows an embodiment of the combined invention. In FIG. 2, instead of the permanent magnet 5, a permanent magnet 5' having magnetic poles of different polarities at both ends is used, and one end of the magnetic pole is placed on the side. It comes into contact with the leg 2b, and the magnetic pole at the other end is positioned at the center of the side legs 2b, 2'b, and comes into contact with the support fitting 6, and has the same effect as the case shown in Fig. 2. It is.
第１図は特定発明の実施例を示すもので、第１図は内部
平面図、第２図は同上のｘ−ｘ−ｘ’−Ｘ線における断
面図、第３図は特定発明の動作説明図、第４図は併合発
明の１実施例の断面図、第５図は従来の単安定型の有極
リレーを示すもので、第５図イは内部平面図、第５図口
は同上のＹ−Ｙｌ−Ｙ’１−Ｙｆ線における断面図、第
５図ハは従来の単安定型の有極リレーの動作説明図であ
る。
１はケース、２はヨーク、３はコイル枠、４はコイル、
５，５′は永久磁石、６は支持金具、７は可動鉄片、９
は絶縁体、１３，１３’はスイッチ、８Ｃ，８’Ｃは復
帰バネ、１４ 、１４’は突起、ａは空隙又は断面縮小
部である。Fig. 1 shows an embodiment of the specified invention, Fig. 1 is an internal plan view, Fig. 2 is a sectional view taken along the x-x-x'-X line of the same as above, and Fig. 3 is an explanation of the operation of the specified invention. Figure 4 is a sectional view of one embodiment of the combined invention, Figure 5 shows a conventional monostable type polarized relay, Figure 5 A is an internal plan view, and Figure 5 opening is the same as above. A sectional view taken along the line Y-Yl-Y'1-Yf, and FIG. 5C is an explanatory diagram of the operation of a conventional monostable type polarized relay. 1 is the case, 2 is the yoke, 3 is the coil frame, 4 is the coil,
5, 5' are permanent magnets, 6 is a support bracket, 7 is a movable iron piece, 9
13 and 13' are insulators, 13 and 13' are switches, 8C and 8'C are return springs, 14 and 14' are protrusions, and a is a gap or a reduced section.
Claims (1)
ルを巻装し、両端に同一極性の磁極を有して中間部に異
なる磁極を有する永久磁石を前記ヨークの両側脚間に配
設して永久磁石の一端の磁極を一方の側脚に当接して他
端の磁極と他方の側脚間に空隙を設け、上記永久磁石の
中間部の磁極に当接して前記両側脚間の中心部に配設せ
る支持金具に可動鉄片の中心部を可動鉄片がシーソー運
動するよう枢支して可動鉄片の両端下面を前記両側膜の
先端に対向し、可動鉄片のシーソー運動によって動作す
るスイッチをケース内に配設すると共に、永久磁石によ
る可動鉄片両端部の磁気吸着モーメントを異なわせしめ
てなる有極リレーにおいて、前記ヨークの途中に空隙又
は断面縮小部を形成してなる有極リレー。 ２ ケース内に配設せるコ字状のヨークの中央部にコイ
ルを巻装し、両端に異なる磁極を有する永久磁石を前記
ヨークの両側脚間に配設して而もその一端の磁極を一方
の側脚に当接して他端の磁極を両側脚間の中心部に位置
せしめ、この他端の磁極に支持金具を当接し、この支持
金具に可動鉄片の中心部を当接して可動鉄片がシーソー
運動するよう枢支して可動鉄片の両端下面を前記両側膜
の先端に対向し、可動鉄片のシーソー運動によって動作
するスイッチをケース内に配設すると共に、永久磁石に
よる可動鉄片両端部の磁気吸着モーメントを異なわせし
めてなる有極リレーにおいて、前記ヨークの途中に空隙
又は断面縮小部を形成してなる有極リレー。[Scope of Claims] 1. A coil is wound around the center of a U-shaped yoke disposed in a case, and a permanent magnet having magnetic poles of the same polarity at both ends and a different magnetic pole at the middle portion is attached to the yoke. The magnetic pole at one end of the permanent magnet is placed between the legs on both sides of the permanent magnet, and the magnetic pole at one end is brought into contact with one side leg, and a gap is created between the magnetic pole at the other end and the other side leg. The center of the movable iron piece is pivoted to a support fitting disposed at the center between the legs on both sides so that the movable iron piece moves in a seesaw manner, and the lower surfaces of both ends of the movable iron piece are opposed to the tips of the membranes on both sides. In a polarized relay in which a switch operated by a seesaw motion is disposed in a case and the magnetic adsorption moment of both ends of a movable iron piece by a permanent magnet is made different, a gap or a reduced cross-section part is formed in the middle of the yoke. A polarized relay. 2 A coil is wound around the center of a U-shaped yoke disposed inside the case, and a permanent magnet having different magnetic poles at both ends is disposed between both legs of the yoke, and the magnetic pole at one end is set at one end. The magnetic pole at the other end is placed in the center between the legs on both sides, and the supporting metal fitting is brought into contact with the magnetic pole at the other end. A switch is disposed in the case that is pivoted so that the movable iron piece moves in a seesaw manner so that the bottom surfaces of both ends of the movable iron piece face the ends of the membranes on both sides, and the switch is operated by the seesaw movement of the movable iron piece. A polarized relay having different adsorption moments, the polarized relay having a void or a reduced section formed in the middle of the yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10379076A JPS5918815B2 (en) | 1976-08-30 | 1976-08-30 | polarized relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10379076A JPS5918815B2 (en) | 1976-08-30 | 1976-08-30 | polarized relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5328258A JPS5328258A (en) | 1978-03-16 |
| JPS5918815B2 true JPS5918815B2 (en) | 1984-05-01 |
Family
ID=14363188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10379076A Expired JPS5918815B2 (en) | 1976-08-30 | 1976-08-30 | polarized relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5918815B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56121235A (en) * | 1980-02-29 | 1981-09-24 | Matsushita Electric Works Ltd | Miniature electromagnetic relay |
-
1976
- 1976-08-30 JP JP10379076A patent/JPS5918815B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5328258A (en) | 1978-03-16 |
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