JPH103840A - Electromagnetic relay - Google Patents
Electromagnetic relayInfo
- Publication number
- JPH103840A JPH103840A JP15385496A JP15385496A JPH103840A JP H103840 A JPH103840 A JP H103840A JP 15385496 A JP15385496 A JP 15385496A JP 15385496 A JP15385496 A JP 15385496A JP H103840 A JPH103840 A JP H103840A
- Authority
- JP
- Japan
- Prior art keywords
- movable contact
- card
- contact piece
- hole
- piece
- 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.)
- Pending
Links
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電磁継電器、特に、
長さ方向に往復移動するカードで可動接触片を回動し、
接点を開閉する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,
The movable contact piece is rotated by a card that reciprocates in the length direction,
The present invention relates to an electromagnetic relay for opening and closing contacts.
【０００２】[0002]
【従来の技術】従来、長さ方向に往復移動するカードで
可動接触片を回動し、接点を開閉する電磁継電器として
は、例えば、図５に示すように、可動接点２を有する可
動接触片１をカード４で回動し、接点を開閉するものが
ある。2. Description of the Related Art Conventionally, as an electromagnetic relay for turning a movable contact piece by a card reciprocating in the length direction and opening and closing a contact, for example, a movable contact piece having a movable contact 2 as shown in FIG. 1 is rotated by a card 4 to open and close contacts.
【０００３】すなわち、前記可動接触片１は、その上端
部近傍に一対の貫通孔３，３を設けてあり、前記可動接
点２が図示しない固定接点に接離可能に対向している。
一方、前記カード４は、その先端面に、前記可動接触片
１の貫通孔３，３にそれぞれ遊嵌する一対の突起５，５
を突設してある。That is, the movable contact piece 1 is provided with a pair of through holes 3 near the upper end thereof, and the movable contact 2 is opposed to a fixed contact (not shown) so as to be able to contact and separate therefrom.
On the other hand, the card 4 has a pair of protrusions 5, 5, which are loosely fitted into the through-holes 3, 3 of the movable contact piece 1, respectively, on the end surface thereof.
Is protruding.
【０００４】そして、この突起５，５を前記可動接触片
１の貫通孔３，３にそれぞれ挿入して遊嵌するととも
に、カード４の後端に設けた弾性腕部６，６を図示しな
い電磁石ブロックの可動鉄片に組み付けることにより、
前記カード４は長さ方向に往復移動可能に支持される。
ついで、前記電磁石ブロックの励磁，消磁に基づいて回
動する可動鉄片でカード４を往復移動し、可動接触片１
を板厚方向に押圧，解除することにより、可動接点２が
固定接点に接離する。The protrusions 5, 5 are inserted into the through holes 3, 3 of the movable contact piece 1 to fit loosely, and the elastic arms 6, 6 provided at the rear end of the card 4 are not shown in the figure. By assembling to the movable iron piece of the block,
The card 4 is supported so as to be able to reciprocate in the length direction.
Then, the card 4 is reciprocated by a movable iron piece that rotates based on the excitation and demagnetization of the electromagnet block, and the movable contact piece 1 is moved.
Is pressed and released in the plate thickness direction, whereby the movable contact 2 comes into contact with and separates from the fixed contact.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前述の
電磁継電器では、可動接触片１の貫通孔３，３にカード
４の突起５，５を遊嵌してあるにすぎない。このため、
輸送時の振動等により、カード４が可動接触片１から脱
落し、動作不能になるという問題点がある。However, in the above-described electromagnetic relay, the protrusions 5, 5 of the card 4 are merely loosely fitted into the through holes 3, 3 of the movable contact piece 1. For this reason,
There is a problem that the card 4 falls off from the movable contact piece 1 due to vibration or the like at the time of transportation and becomes inoperable.
【０００６】本発明は、前記問題点に鑑み、可動接触片
からカードが脱落せず、動作不能になることがない電磁
継電器を提供することを目的とする。[0006] In view of the above problems, an object of the present invention is to provide an electromagnetic relay in which a card does not fall out of a movable contact piece and does not become inoperable.
【０００７】[0007]
【課題を解決するための手段】本発明にかかる電磁継電
器は、前記目的を達成するため、電磁石ブロックの励
磁，消磁に基づいて長さ方向に往復移動するカードで可
動接触片を板厚方向に押圧，解除し、接点を開閉する電
磁継電器において、前記可動接触片に設けた貫通孔に、
前記カードの先端面に突設した係合突部を挿入し、前記
貫通孔の開口縁部から延在した少なくとも一つの弾性舌
片で前記係合突部を抜け止めした構成としたものであ
る。In order to achieve the above object, an electromagnetic relay according to the present invention uses a card that reciprocates in the length direction based on the excitation and demagnetization of an electromagnet block to move a movable contact piece in a plate thickness direction. In an electromagnetic relay that presses and releases and opens and closes a contact, a through hole provided in the movable contact piece includes:
An engaging projection projecting from the leading end surface of the card is inserted, and the engaging projection is prevented from coming off by at least one elastic tongue extending from an opening edge of the through hole. .
【０００８】また、前記可動接触片の上端部に位置する
切り欠き部の少なくとも片側に設けた貫通孔に、前記カ
ードの先端面に突設した突起を挿入するとともに、前記
切り欠き部の下辺縁部から延在する弾性舌片に、前記カ
ードの先端面に突設した係合突部を係止した構成であっ
てもよい。In addition, a projection protruding from the leading end surface of the card is inserted into a through hole provided on at least one side of the notch located at the upper end of the movable contact piece, and a lower edge of the notch is inserted. The engagement tongue protruding from the front end surface of the card may be locked to an elastic tongue extending from the portion.
【０００９】さらに、前記可動接触片の上端部近傍に設
けた貫通孔に、前記カードの先端面に突設した突起を挿
入するとともに、前記可動接触片の上端部から延在する
略Ｌ字形状の弾性舌片を、前記カードの先端面側の上面
縁部に設けた凹部に係止した構成であってもよい。Further, a projection protruding from the front end surface of the card is inserted into a through hole provided near the upper end of the movable contact piece, and a substantially L-shaped extending from the upper end of the movable contact piece. The elastic tongue may be locked in a concave portion provided on an upper surface edge on the front end side of the card.
【００１０】[0010]
【発明の実施の形態】次に、本発明にかかる実施形態を
図１ないし図４の添付図面に従って説明する。第１実施
形態は、図１に示すように、基本的構成は前述の従来例
とほぼ同様であり、異なる点は可動接触片１０に対する
カード２０の取り付け構造である。すなわち、可動接点
１１をカシメ固定した前記可動接触片１０は、その上端
部に長方形の貫通孔１２を設けてある。さらに、この貫
通孔１２の両側縁部から抜け止め用弾性舌片１３，１３
が内方に延在している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment according to the present invention will be described with reference to the accompanying drawings of FIGS. As shown in FIG. 1, the first embodiment has substantially the same basic configuration as that of the above-described conventional example, except for the structure of mounting the card 20 to the movable contact piece 10. That is, the movable contact piece 10 to which the movable contact 11 is fixed by caulking is provided with a rectangular through hole 12 at the upper end thereof. Further, the elastic tongue pieces 13 for retaining from the both side edges of the through hole 12.
Extend inward.
【００１１】一方、カード２０は、その先端面に平面矢
印形状の係合突部２１を突設し、さらに、この係合突部
２１の基部に、前記可動接触片１０に線接触する断面略
半円形の突条２２を設けてある。また、カード２０は、
その後端側に、図示しない電磁石ブロックの可動鉄片を
保持する一対の弾性腕部２３，２３を形成してある。On the other hand, the card 20 has a projecting projection 21 having a plane arrow shape protruding from a front end surface thereof, and further, the base of the engaging projection 21 is substantially in cross-section for linear contact with the movable contact piece 10. A semicircular ridge 22 is provided. Also, the card 20
On the rear end side, a pair of elastic arms 23, 23 for holding a movable iron piece of an electromagnet block (not shown) are formed.
【００１２】したがって、可動接触片１０の貫通孔１２
にカード２０の係合突部２１を位置決めし、抜け止め用
弾性舌片１３，１３を弾性変形させながら挿入すると、
抜け止め用舌片１３，１３が弾性復帰して係合突部２１
を係止し、抜け止めする。このため、輸送時に外部から
振動が加わっても、カード２０が可動接触片１０から脱
落せず、動作不能になることがない。他は前述の従来例
とほぼ同様であるので、説明を省略する。Therefore, the through hole 12 of the movable contact piece 10
When the engaging protrusion 21 of the card 20 is positioned at the position and the elastic tongue pieces 13 for retaining are inserted while being elastically deformed,
The retaining tongue pieces 13, 13 are elastically restored and the engaging projections 21 are formed.
And lock it. For this reason, even if vibration is applied from the outside during transportation, the card 20 does not fall off the movable contact piece 10 and does not become inoperable. The rest is almost the same as the above-mentioned conventional example, and the description is omitted.
【００１３】第２実施形態は、図２に示すように、可動
接触片１０の上端部近傍に方形の貫通孔１４を設けると
ともに、この貫通孔１４の上辺縁部に抜け止め用弾性舌
片１５を設けてある。一方、カード２０の先端面には前
記弾性舌片１５に係合する係合突部２４が突設されてい
る。In the second embodiment, as shown in FIG. 2, a rectangular through hole 14 is provided in the vicinity of the upper end of the movable contact piece 10 and an elastic tongue 15 for retaining is formed in the upper edge of the through hole 14. Is provided. On the other hand, an engagement projection 24 that engages with the elastic tongue piece 15 is provided on the distal end surface of the card 20 so as to project therefrom.
【００１４】そして、可動接触片１０の貫通孔１４にカ
ード２０の係合突部２４を位置決めし、抜け止め用弾性
舌片１５を弾性変形させながら挿入すると、抜け止め用
舌片１５が弾性復帰して係合突部２４を係止し、抜け止
めする。他は前述の第１実施形態と同様であるので、説
明を省略する。When the engaging projection 24 of the card 20 is positioned in the through hole 14 of the movable contact piece 10 and inserted while the retaining tongue 15 is elastically deformed, the retaining tongue 15 is elastically restored. As a result, the engaging projection 24 is locked and prevented from coming off. The other parts are the same as those of the first embodiment, and the description is omitted.
【００１５】第３実施形態は、図３に示すように、可動
接触片１０の上端部中央に係合用切り欠き部１６が形成
され、この切り欠き部１６の下辺縁部から係合用弾性舌
片１７が延在するとともに、前記切り欠き部１６の両側
に貫通孔１８，１８が形成されている。一方、カード２
０は、その先端面中央に、前記弾性舌片１７に係合する
係合突部２６が突設されているとともに、この係合突部
２６の両側に、前記貫通孔１８，１８にそれぞれ遊嵌す
る突起２５，２５が突設されている。In the third embodiment, as shown in FIG. 3, a notch 16 for engagement is formed at the center of the upper end of the movable contact piece 10, and the elastic tongue for engagement is formed from the lower edge of the notch 16. 17 extends, and through holes 18, 18 are formed on both sides of the notch 16. Meanwhile, card 2
Reference numeral 0 denotes a projecting engagement portion 26 that engages with the elastic tongue piece 17 at the center of the distal end surface, and has a play in the through holes 18 on both sides of the engagement projection 26. Projections 25, 25 to be fitted are provided.
【００１６】したがって、可動接触片１０の貫通孔１
８，１８にカード２０の突起２５，２５を挿入するとと
もに、弾性舌片１７に係合突部２６を係止することによ
り、両者が連結され、脱落を防止できる。他は前述の実
施形態と同様であるので、説明を省略する。Therefore, the through hole 1 of the movable contact piece 10
By inserting the projections 25, 25 of the card 20 into the slots 8, 18, and by engaging the engaging projections 26 with the elastic tongues 17, the two are connected to prevent the card 20 from falling off. Other configurations are the same as those of the above-described embodiment, and the description is omitted.
【００１７】第４実施形態は、図４に示すように、可動
接触片１０の上端縁部から略Ｌ字形状の係止用弾性爪部
１９が延在しているとともに、この弾性爪部１９の下方
側に一対の貫通孔１８，１８が形成されている。一方、
カード２０は、その先端面に一対の突起２５，２５が形
成されているとともに、その先端面側の上面縁部に、前
記弾性爪部１９が係止する凹部２７が形成されている。In the fourth embodiment, as shown in FIG. 4, a substantially L-shaped locking elastic claw portion 19 extends from the upper end edge of the movable contact piece 10, and this elastic claw portion 19 is provided. A pair of through-holes 18 are formed on the lower side of. on the other hand,
The card 20 has a pair of protrusions 25, 25 formed on the front end surface thereof, and a concave portion 27 on which the elastic claw portion 19 is engaged is formed on an upper surface edge on the front end surface side.
【００１８】したがって、可動接触片１０の貫通孔１
８，１８にカード２０の突起２５，２５を挿入すると、
弾性爪部１９が凹部２７に係止し、抜け止めされる。他
は前述の実施形態と同様であるので、説明を省略する。Therefore, the through hole 1 of the movable contact piece 10
When the projections 25, 25 of the card 20 are inserted into 8, 18,
The elastic claws 19 are locked in the recesses 27 and are prevented from coming off. Other configurations are the same as those of the above-described embodiment, and the description is omitted.
【００１９】なお、前述の実施形態では、必ずしも一対
の貫通孔１８，１８を設ける必要はなく、１個の貫通孔
を設けるだけでもよい。In the above-described embodiment, it is not always necessary to provide a pair of through holes 18, and only one through hole may be provided.
【００２０】[0020]
【発明の効果】以上の説明から明らかなように、本発明
にかかる請求項１の電磁継電器によれば、可動接触片の
貫通孔に挿入されたカードの係合突部が、貫通孔の開口
縁部から延在する弾性舌片に係止し、抜け止めされる。
このため、輸送時に外部から振動が加わっても、可動接
触片からカードが脱落せず、動作不能となることはな
い。また、請求項２によれば、前述と同様、カードの係
合突部が可動接触片の弾性舌片に係止し、カードの突起
が可動接触片の貫通孔から脱落することがないので、動
作不能となることはない。さらに、請求項３によれば、
可動接触片の弾性爪部がカードの凹部に係合するので、
カードの突起が可動接触片の貫通孔から脱落することが
なく、電磁継電器が動作不能にならないという効果があ
る。As is apparent from the above description, according to the electromagnetic relay of the first aspect of the present invention, the engaging projection of the card inserted into the through hole of the movable contact piece is formed by the opening of the through hole. The elastic tongue extending from the edge locks and is locked.
For this reason, even if vibration is applied from outside during transportation, the card does not fall off the movable contact piece and the card does not become inoperable. According to the second aspect, as described above, the engaging projection of the card is locked to the elastic tongue of the movable contact piece, and the projection of the card does not fall out of the through hole of the movable contact piece. It does not become inoperable. Further, according to claim 3,
Since the elastic claw of the movable contact piece engages with the recess of the card,
There is an effect that the protrusion of the card does not fall out of the through hole of the movable contact piece and the electromagnetic relay does not become inoperable.
【図１】 本願発明にかかる電磁継電器の第１実施形態
を示し、図（ａ）は組立途中の斜視図、図（ｂ）は要部
断面図、図（ｃ）は組立後の斜視図である。1A and 1B show a first embodiment of an electromagnetic relay according to the present invention, wherein FIG. 1A is a perspective view in the middle of assembly, FIG. 1B is a sectional view of a main part, and FIG. 1C is a perspective view after assembly. is there.
【図２】 本願発明にかかる電磁継電器の第２実施形態
を示し、図（ａ）は組立途中の斜視図、図（ｂ）は要部
側面図、図（ｃ）は組立後の斜視図である。2A and 2B show a second embodiment of the electromagnetic relay according to the present invention, wherein FIG. 2A is a perspective view during assembly, FIG. 2B is a side view of a main part, and FIG. 2C is a perspective view after assembly. is there.
【図３】 本願発明にかかる電磁継電器の第３実施形態
を示し、図（ａ）は組立途中の斜視図、図（ｂ）は要部
側面図、図（ｃ）は組立後の斜視図である。3A and 3B show a third embodiment of an electromagnetic relay according to the present invention, wherein FIG. 3A is a perspective view during assembly, FIG. 3B is a side view of a main part, and FIG. 3C is a perspective view after assembly. is there.
【図４】 本願発明にかかる電磁継電器の第３実施形態
を示し、図（ａ）は組立途中の斜視図、図（ｂ）は要部
側面図、図（ｃ）は組立後の斜視図である。4A and 4B show a third embodiment of the electromagnetic relay according to the present invention, wherein FIG. 4A is a perspective view in the middle of assembling, FIG. 4B is a side view of a main part, and FIG. is there.
【図５】 従来例にかかる電磁継電器を示し、図（ａ）
は組立途中の斜視図、図（ｂ）は要部側面図、図（ｃ）
は組立後の斜視図である。FIG. 5 shows an electromagnetic relay according to a conventional example, and FIG.
Is a perspective view during assembly, FIG. (B) is a side view of a main part, and FIG.
Is a perspective view after assembly.
１０…可動接触片、１１…可動接点、１２，１４，１８
…貫通孔、１３，１５，１７…弾性舌片、１６…切り欠
き部、２０…カード、２１，２４，２６…係合突部、２
５…突起、１９…弾性爪部。10: movable contact piece, 11: movable contact, 12, 14, 18
... through holes, 13, 15, 17 ... elastic tongues, 16 ... cutouts, 20 ... cards, 21, 24, 26 ... engagement projections, 2
5 Projection, 19 Elastic claw part.
Claims (3)
長さ方向に往復移動するカードで可動接触片を板厚方向
に押圧，解除し、接点を開閉する電磁継電器において、 前記可動接触片に設けた貫通孔に、前記カードの先端面
に突設した係合突部を挿入し、前記貫通孔の開口縁部か
ら延在した少なくとも一つの弾性舌片で前記係合突部を
抜け止めしたことを特徴とする電磁継電器。1. An electromagnetic relay for pressing and releasing a movable contact piece in a plate thickness direction with a card that reciprocates in a length direction based on excitation and demagnetization of an electromagnet block to open and close a contact, wherein the movable contact piece is provided on the movable contact piece. The engaging projection projecting from the front end surface of the card is inserted into the through hole, and the engaging projection is prevented from coming off by at least one elastic tongue extending from the opening edge of the through hole. An electromagnetic relay characterized by the following.
長さ方向に往復移動するカードで可動接触片を板厚方向
に押圧，解除し、接点を開閉する電磁継電器において、 前記可動接触片の上端部に位置する切り欠き部の少なく
とも片側に設けた貫通孔に、前記カードの先端面に突設
した突起を挿入するとともに、前記切り欠き部の下辺縁
部から延在する弾性舌片に、前記カードの先端面に突設
した係合突部を係止したことを特徴とする電磁継電器。2. An electromagnetic relay for pressing and releasing a movable contact piece in a thickness direction by a card reciprocating in a length direction based on excitation and demagnetization of an electromagnet block to open and close a contact, wherein an upper end of the movable contact piece is provided. Inserting a protrusion protruding from the front end surface of the card into a through hole provided on at least one side of the notch portion located in the portion, the elastic tongue piece extending from the lower edge of the notch, An electromagnetic relay characterized in that an engaging projection projecting from a front end surface of a card is locked.
長さ方向に往復移動するカードで可動接触片を板厚方向
に押圧，解除し、接点を開閉する電磁継電器において、 前記可動接触片の上端部近傍に設けた貫通孔に、前記カ
ードの先端面に突設した突起を挿入するとともに、前記
可動接触片の上端部から延在する略Ｌ字形状の弾性舌片
を、前記カードの先端面側の上面縁部に設けた凹部に係
止したことを特徴とする電磁継電器。3. An electromagnetic relay for pressing and releasing a movable contact piece in a plate thickness direction with a card reciprocating in a length direction based on excitation and demagnetization of an electromagnet block to open and close a contact, wherein an upper end of the movable contact piece is provided. Inserting a protrusion protruding from the front end surface of the card into a through hole provided in the vicinity of the portion, and attaching a substantially L-shaped elastic tongue extending from the upper end of the movable contact piece to the front end surface of the card. Characterized in that the electromagnetic relay is engaged with a concave portion provided on an edge of the upper surface on the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15385496A JPH103840A (en) | 1996-06-14 | 1996-06-14 | Electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15385496A JPH103840A (en) | 1996-06-14 | 1996-06-14 | Electromagnetic relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH103840A true JPH103840A (en) | 1998-01-06 |
Family
ID=15571564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15385496A Pending JPH103840A (en) | 1996-06-14 | 1996-06-14 | Electromagnetic relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH103840A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007299758A (en) * | 2006-05-06 | 2007-11-15 | Tyco Electronics Austria Gmbh | Relay |
| JP2009129595A (en) * | 2007-11-21 | 2009-06-11 | Yamatake Corp | Snap action mechanism, and pressure switch using the same |
| JP2010033719A (en) * | 2008-07-24 | 2010-02-12 | Panasonic Electric Works Co Ltd | Electromagnetic relay |
| KR100998425B1 (en) | 2008-11-18 | 2010-12-03 | 대성전기공업 주식회사 | A relay for controlling flow of the electric current |
| WO2014038498A1 (en) * | 2012-09-05 | 2014-03-13 | Idec株式会社 | Electromagnetic relay |
| JP2014053080A (en) * | 2012-09-05 | 2014-03-20 | Idec Corp | Electromagnetic relay |
| WO2015045738A1 (en) * | 2013-09-27 | 2015-04-02 | オムロン株式会社 | Contact point mechanism part and electromagnetic relay equipped with same |
| CN111801761A (en) * | 2018-03-27 | 2020-10-20 | 欧姆龙株式会社 | Relay with a movable contact |
| WO2023277191A1 (en) * | 2021-07-02 | 2023-01-05 | 富士電機機器制御株式会社 | Thermomotive overload relay |
-
1996
- 1996-06-14 JP JP15385496A patent/JPH103840A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007299758A (en) * | 2006-05-06 | 2007-11-15 | Tyco Electronics Austria Gmbh | Relay |
| JP2009129595A (en) * | 2007-11-21 | 2009-06-11 | Yamatake Corp | Snap action mechanism, and pressure switch using the same |
| JP2010033719A (en) * | 2008-07-24 | 2010-02-12 | Panasonic Electric Works Co Ltd | Electromagnetic relay |
| KR100998425B1 (en) | 2008-11-18 | 2010-12-03 | 대성전기공업 주식회사 | A relay for controlling flow of the electric current |
| JP2014053077A (en) * | 2012-09-05 | 2014-03-20 | Idec Corp | Electromagnetic relay |
| JP2014053080A (en) * | 2012-09-05 | 2014-03-20 | Idec Corp | Electromagnetic relay |
| WO2014038498A1 (en) * | 2012-09-05 | 2014-03-13 | Idec株式会社 | Electromagnetic relay |
| WO2015045738A1 (en) * | 2013-09-27 | 2015-04-02 | オムロン株式会社 | Contact point mechanism part and electromagnetic relay equipped with same |
| CN105103257A (en) * | 2013-09-27 | 2015-11-25 | 欧姆龙株式会社 | Contact point mechanism part and electromagnetic relay equipped with same |
| CN111801761A (en) * | 2018-03-27 | 2020-10-20 | 欧姆龙株式会社 | Relay with a movable contact |
| EP3770940A4 (en) * | 2018-03-27 | 2021-12-29 | Omron Corporation | Relay |
| US11380504B2 (en) | 2018-03-27 | 2022-07-05 | Omron Corporation | Relay with card made from resin |
| CN111801761B (en) * | 2018-03-27 | 2023-08-04 | 欧姆龙株式会社 | Relay device |
| WO2023277191A1 (en) * | 2021-07-02 | 2023-01-05 | 富士電機機器制御株式会社 | Thermomotive overload relay |
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