JPH0320852B2 - - Google Patents
Info
- Publication number
- JPH0320852B2 JPH0320852B2 JP13298181A JP13298181A JPH0320852B2 JP H0320852 B2 JPH0320852 B2 JP H0320852B2 JP 13298181 A JP13298181 A JP 13298181A JP 13298181 A JP13298181 A JP 13298181A JP H0320852 B2 JPH0320852 B2 JP H0320852B2
- Authority
- JP
- Japan
- Prior art keywords
- piece
- contact
- contact piece
- movable iron
- iron core
- 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 group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 80
- 229910052742 iron Inorganic materials 0.000 claims description 29
- 238000001179 sorption measurement Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Description
【発明の詳細な説明】
本発明は負荷の開閉制御に用いられる電磁継電
器に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic relay used for controlling switching of a load.
従来、この種の電磁継電器で交流負荷をしや断
するとき、しや断時の電流位相が一定していない
ため、位相によつては接点間に発生するアークが
半サイクルもの間持続することがあり、接点の消
耗が激しく、接点回路の絶縁劣化をきたす欠点が
あつた。 Conventionally, when an AC load is interrupted with this type of electromagnetic relay, the current phase at the time of interruption is not constant, so depending on the phase, the arc that occurs between the contacts can last for half a cycle. The disadvantage was that the contacts were subject to severe wear and tear, leading to deterioration of the insulation of the contact circuit.
本発明はかかる欠点に鑑みてなされたもので、
接点を流れる負荷電流による吸引力の作用によつ
て、負荷電流零付近の位相で負荷をしや断し、ア
ークの発生を防止した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 these drawbacks.
It is an object of the present invention to provide an electromagnetic relay that interrupts a load at a phase near zero load current by the action of attractive force caused by the load current flowing through the contacts, and prevents arcing.
以下、本発明を一実施例である添付図面にした
がつて説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.
第1図〜第4図において、1はI字形状の鉄
心、2は一端に固定接点3を取付け、他端を端子
部2aとした第1接触片で、これら鉄心1と第1
接触片2とを重ねてスプール4中にインサート成
形してあり、スプール4の胴部にはコイル5が巻
回されている。6はスプール4の外周に遊嵌合す
る口字形状の可動鉄片、8は可動鉄片6の上面に
同形状の絶縁板7を介して接着固定された略口字
形状の第2接触片で、第2接触片8は導電性ばね
板からなり、その一端には上記固定接点3と対向
する可動接点9を有し、他端には第1接触片2の
端子部2aと平行に突出する端子部8aが形成さ
れている。可動鉄片6はこの第2接触片8によつ
て揺動自在にヒンジされ、一辺部6aが鉄心1の
一端巾広部1aに当接するとともに、反対側辺部
6bが鉄心1の他端巾広部1bと対向して吸着部
を構成している。なお、可動鉄片6の吸着部側辺
部6bには第1接触片2と接触しないように切欠
6cが設けられている(第1図参照)。 1 to 4, 1 is an I-shaped iron core, 2 is a first contact piece with a fixed contact 3 attached to one end, and a terminal portion 2a at the other end;
The contact piece 2 is overlapped with the spool 4 by insert molding, and a coil 5 is wound around the body of the spool 4. Reference numeral 6 denotes a movable iron piece having a mouth shape that loosely fits around the outer periphery of the spool 4; numeral 8 represents a second contact piece having a substantially mouth shape that is adhesively fixed to the upper surface of the movable iron piece 6 via an insulating plate 7 having the same shape; The second contact piece 8 is made of a conductive spring plate, and has a movable contact 9 facing the fixed contact 3 at one end thereof, and a terminal protruding parallel to the terminal portion 2a of the first contact piece 2 at the other end. A portion 8a is formed. The movable iron piece 6 is swingably hinged by the second contact piece 8, and one side 6a abuts one wide end 1a of the iron core 1, and the opposite side 6b contacts the other wide end 1a of the iron core 1. A suction section is configured opposite to section 1b. Note that a notch 6c is provided in the suction portion side portion 6b of the movable iron piece 6 so as not to come into contact with the first contact piece 2 (see FIG. 1).
端子台10は一方側に鉄心1およびスプール4
を固定し、かつ第1、第2接触片2,8の端子部
2a,8aを挿着固定したもので、端子部2a,
8aには交流電源および負荷が持続されている。
この端子台10はスプール4と一体成形してもよ
く、また接触片2,8の端子部2a,8aとは別
体の外部端子を端子台10の他方側に突設し、こ
の外部端子に上記接触片2,8の端子部2a,8
aを接続してもよい。 The terminal block 10 has an iron core 1 and a spool 4 on one side.
is fixed, and the terminal parts 2a, 8a of the first and second contact pieces 2, 8 are inserted and fixed, and the terminal parts 2a,
An AC power source and a load are maintained at 8a.
This terminal block 10 may be integrally molded with the spool 4, and an external terminal separate from the terminal parts 2a and 8a of the contact pieces 2 and 8 is provided protruding from the other side of the terminal block 10. Terminal portions 2a, 8 of the contact pieces 2, 8
You may also connect a.
つぎに、この電磁継電器の動作を第5図にした
がつて説明する。 Next, the operation of this electromagnetic relay will be explained with reference to FIG.
まず、t1時においてコイル5に入力信号を加え
ると、可動鉄片6は第2接触片8のばね力に抗し
て鉄心1に吸引され、微少時間後のt2時に可動鉄
片6が鉄心1に吸着されてこの吸着部で第1接触
片2の周囲に閉磁路が形成されるとともに、接点
3,9が閉成する。これにより、接点3,9を介
して負荷電流が流れ、鉄心1と可動鉄片6との吸
着部間にはコイル5による磁束Φ1(第3図照)
と負荷電流による磁束Φ2(第4図参照)とが発
生する。そのため、コイル5による吸引力と負荷
電流による吸引力との合成力が電磁継電器の吸引
力となる。この吸引力は負荷電流の変動に応じて
時間とともに変動する。 First, when an input signal is applied to the coil 5 at time t1, the movable iron piece 6 is attracted to the iron core 1 against the spring force of the second contact piece 8, and after a short time, at t2, the movable iron piece 6 is attracted to the iron core 1. Then, a closed magnetic path is formed around the first contact piece 2 at this attraction part, and the contacts 3 and 9 are closed. As a result, a load current flows through the contacts 3 and 9, and a magnetic flux Φ1 due to the coil 5 is generated between the attraction portion of the iron core 1 and the movable iron piece 6 (see Figure 3).
and a magnetic flux Φ2 (see FIG. 4) due to the load current are generated. Therefore, the combined force of the attraction force by the coil 5 and the attraction force by the load current becomes the attraction force of the electromagnetic relay. This attractive force varies over time in response to variations in load current.
いま、t3時において、コイル5への入力信号を
切ると、可動鉄片6は第2接触片8のばね力によ
つて復帰しようとするが、負荷電流のt3時におけ
る位相電流値が大きいため、負荷電流による磁速
Φ2によつて可動鉄片6は鉄心1に吸着され続け
る。 Now, when the input signal to the coil 5 is cut off at time t3, the movable iron piece 6 attempts to return to its original state due to the spring force of the second contact piece 8, but since the phase current value of the load current at time t3 is large, The movable iron piece 6 continues to be attracted to the iron core 1 due to the magnetic velocity Φ2 caused by the load current.
そして、負荷電流が時間とともに小さくなり、
位相が零付近になると、第2接触片8による復帰
力と負荷電流による吸引力とが等しくなり、この
点(t4時)において可動鉄片6は復帰し、接点は
開離する。したがつて、負荷しや断時のアークは
ほとんど発生しない。実際に接点が開離するの
は、可動鉄片6の慣性モーメントのためにt4時よ
り若干遅れ、負荷電流の位相が零点に更に近づ
く。そのため、負荷しや断時のアークは更に少な
くなる。 Then, the load current decreases over time,
When the phase becomes near zero, the return force by the second contact piece 8 and the attraction force by the load current become equal, and at this point (time t4), the movable iron piece 6 returns and the contacts open. Therefore, arcing hardly occurs when the load is on or off. The actual opening of the contacts is delayed slightly from time t4 due to the moment of inertia of the movable iron piece 6, and the phase of the load current approaches the zero point. Therefore, arcing during loading and unloading is further reduced.
上記実施例では、I字形鉄心1と口字形可動鉄
片6とを用い、吸着面として板厚面を使用してい
るので、鉄心1および可動鉄片6を薄肉板で構成
でき、薄型化が可能であるとともに、可動鉄片6
のストロークの精度が高く、かつ吸着面を大きく
取れるため高感度の電磁継電器を得ることができ
る。また、コイル5の一端側にヒンジ構造を有
し、他端側に接点部を有し、端子部をヒンジ部側
から突出させたので、端子部を簡単に引き出すこ
とができ、組立、調整が容易である。 In the above embodiment, the I-shaped iron core 1 and the mouth-shaped movable iron piece 6 are used, and the thick plate surface is used as the suction surface, so the iron core 1 and the movable iron piece 6 can be constructed from thin plates, and the thickness can be reduced. Along with the movable iron piece 6
Since the stroke accuracy is high and the suction surface can be large, a highly sensitive electromagnetic relay can be obtained. In addition, the coil 5 has a hinge structure on one end side, a contact part on the other end side, and the terminal part protrudes from the hinge part side, so the terminal part can be easily pulled out and assembly and adjustment are easy. It's easy.
なお、本発明にかかる電磁継電器は、上記実施
例のごとく可動鉄片6に第2接触片8を取付けた
ものに限らず、可動鉄片6がカードを介して第2
接触片8を駆動するものでもよい。 It should be noted that the electromagnetic relay according to the present invention is not limited to the one in which the second contact piece 8 is attached to the movable iron piece 6 as in the above embodiment;
It may also be one that drives the contact piece 8.
以上の説明で明らかなように、本発明によれ
ば、コイル内に鉄心と第1接触片とを挿通配置す
るとともに、可動鉄片の鉄心への吸引動作に連動
して第1接触片と接触する第2接触片を設け、可
動鉄片が鉄心に吸着されたとき鉄心と可動鉄片と
の吸着部で第1接触片の周囲に閉磁路を形成する
ようにするとともに、上記第2接触片の復帰力を
交流負荷電流の零位相近傍における上記可動鉄片
の吸引力とほぼ等しくしたので、交流負荷をしや
断するとき、常に負荷電流零付近の位相で負荷を
しや断することができる。したがつて、アームの
発生を抑制でき、接点消耗や絶縁劣化といつた問
題を解消できる。しかも、上記閉磁路を形成する
ために特定の磁気回路部品を設ける必要がないの
で、構造が複雑化することがない。 As is clear from the above description, according to the present invention, the iron core and the first contact piece are inserted into the coil, and are brought into contact with the first contact piece in conjunction with the suction operation of the movable iron piece to the iron core. A second contact piece is provided so that when the movable iron piece is attracted to the iron core, a closed magnetic path is formed around the first contact piece at the attraction part between the iron core and the movable iron piece, and the return force of the second contact piece is is made almost equal to the attractive force of the movable iron piece near the zero phase of the AC load current, so when cutting off the AC load, the load can always be cut off at a phase near the zero phase of the load current. Therefore, the occurrence of arms can be suppressed, and problems such as contact wear and insulation deterioration can be solved. Moreover, since it is not necessary to provide specific magnetic circuit components to form the closed magnetic path, the structure does not become complicated.
また、負荷電流による磁束は、最も磁束が効率
よく作用する吸着部に形成されるので、小さな負
荷電流でも高感度の零しや断が可能である。さら
に、第1接触片がコイル中を通過しているため、
第1接触片をスペース効率よく簡単に設置でき、
電磁継電器全体としてコンパクト化できる。 In addition, since the magnetic flux due to the load current is formed in the attracting portion where the magnetic flux acts most efficiently, highly sensitive zeroing and breaking can be performed even with a small load current. Furthermore, since the first contact piece passes through the coil,
The first contact piece can be installed easily and space-efficiently,
The electromagnetic relay as a whole can be made more compact.
第1図は本発明にかかる電磁継電器の斜視図、
第2図はその平面図、第3図は非通電時の正面
図、第4図は通電時の左側面図、第5図はその動
作説明図である。
1……鉄心、2……第1接触片、2a……端子
部、3……固定接点、4……スプール、5……コ
イル、6……可動鉄片、7……絶縁板、8……第
2接触片、8a……端子部、9……可動接点。
FIG. 1 is a perspective view of an electromagnetic relay according to the present invention;
2 is a plan view thereof, FIG. 3 is a front view when not energized, FIG. 4 is a left side view when energized, and FIG. 5 is an explanatory diagram of its operation. DESCRIPTION OF SYMBOLS 1... Iron core, 2... First contact piece, 2a... Terminal part, 3... Fixed contact, 4... Spool, 5... Coil, 6... Movable iron piece, 7... Insulating plate, 8... Second contact piece, 8a... terminal portion, 9... movable contact.
Claims (1)
るとともに、可動鉄片の鉄心への吸引動作に連動
して第1接触片と接触する第2接触片を設け、可
動鉄片が鉄心に吸着されたとき鉄心と可動鉄片と
の吸着部で第1接触片の周囲に閉磁路を形成する
ようにするとともに、上記第2接触片の復帰力を
交流負荷電流の零位相近傍における上記可動鉄片
の吸引力とほぼ等しくしたことを特徴とする電磁
継電器。 2 鉄心を両端部が巾広なI字形状とし、可動鉄
片をコイルを巻回したスプールの外周に遊嵌合す
る口字形状とし、この可動鉄片の一辺部を鉄心の
一端巾広部にヒンジするとともに、可動鉄片の反
対側辺部と鉄心の他端巾広部とを吸着部としたこ
とを特徴とする特許請求の範囲第1項記載の電磁
継電器。 3 可動鉄片の上面に絶縁板を介して第2接触片
を固定し、この第2接触片の一端端子部を第1接
触片の端子部と平行に突出させるとともに、第2
接触片の他端部に第1接触片の接点と接離する接
点を設けたことを特徴とする特許請求の範囲第1
項又は第2項記載の電磁継電器。[Scope of Claims] 1. An iron core and a first contact piece are inserted into the coil, and a second contact piece is provided that contacts the first contact piece in conjunction with the suction operation of the movable iron piece to the iron core. When the iron piece is attracted to the iron core, a closed magnetic path is formed around the first contact piece at the adhesion part between the iron core and the movable iron piece, and the return force of the second contact piece is adjusted to near the zero phase of the AC load current. An electromagnetic relay characterized in that the attractive force of the movable iron piece is approximately equal to that of the movable iron piece. 2 The iron core has a wide I-shape at both ends, the movable iron piece has a mouth shape that loosely fits around the outer periphery of the spool around which the coil is wound, and one side of this movable iron piece is hinged to the wide part at one end of the iron core. The electromagnetic relay according to claim 1, wherein the opposite side of the movable iron piece and the other wide end of the iron core are used as adsorption parts. 3. A second contact piece is fixed to the upper surface of the movable iron piece via an insulating plate, one end terminal part of this second contact piece is made to protrude parallel to the terminal part of the first contact piece, and the second contact piece
Claim 1, characterized in that the other end of the contact piece is provided with a contact that makes contact with and separates from the contact of the first contact piece.
The electromagnetic relay according to paragraph 2 or paragraph 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13298181A JPS5834535A (en) | 1981-08-24 | 1981-08-24 | Electromagnetic relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13298181A JPS5834535A (en) | 1981-08-24 | 1981-08-24 | Electromagnetic relay |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5834535A JPS5834535A (en) | 1983-03-01 |
JPH0320852B2 true JPH0320852B2 (en) | 1991-03-20 |
Family
ID=15093995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13298181A Granted JPS5834535A (en) | 1981-08-24 | 1981-08-24 | Electromagnetic relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5834535A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5848327A (en) * | 1981-09-16 | 1983-03-22 | オムロン株式会社 | Relay |
-
1981
- 1981-08-24 JP JP13298181A patent/JPS5834535A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5834535A (en) | 1983-03-01 |
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