JPS607334B2 - thermal relay - Google Patents
thermal relayInfo
- Publication number
- JPS607334B2 JPS607334B2 JP14536877A JP14536877A JPS607334B2 JP S607334 B2 JPS607334 B2 JP S607334B2 JP 14536877 A JP14536877 A JP 14536877A JP 14536877 A JP14536877 A JP 14536877A JP S607334 B2 JPS607334 B2 JP S607334B2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- contact
- card
- operating lever
- differential
- 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
Description
【発明の詳細な説明】
本発明は過電流時バイメタル１により前方に押動されて
差動レバー２の中間部に庄接する駆動側カード３と、前
端が差動レバー２の一端に回転自在に連結され欠相時バ
イメタル１により後方に押動される従敷側カード４とを
有し「鞍点切去逸機構部５の動作レバー６と差動レバー
２の接触点ｄ，，らを２点とすると共に両接触点ｄ，，
ｄ２間に差動レバー２と駆動側力−ド３との接触点ｄ３
を配し、動作レバー６が差動レバー２との両接触点ｄ，
，ｄ２の中間部を支点として自由に動くことができるよ
うにして成ることを特徴とするサーマルリレーに係り、
その目的とするところは、過電流動作精度。DETAILED DESCRIPTION OF THE INVENTION The present invention includes a driving side card 3 which is pushed forward by the bimetal 1 in the event of an overcurrent and comes into direct contact with the middle part of the differential lever 2, and a drive side card 3 whose front end is rotatably attached to one end of the differential lever 2. It has a secondary side card 4 which is connected and pushed backward by the bimetal 1 in the event of a phase failure. and both contact points d,,
A contact point d3 between the differential lever 2 and the drive side power door 3 between d2
are arranged, and the operating lever 6 has both contact points d with the differential lever 2,
, d2, the thermal relay is characterized in that it can move freely using the middle part of the relay as a fulcrum,
Its purpose is overcurrent operation accuracy.
欠相動作精度が共に向上し、動作信頼性の高いサーマル
リレーを提供するにある。第５図乃至第７図ａ，ｂは従
来のサーマルリレーの一部を示すもので、３相交流電源
の異常を検出するための３つのバイメタル１を前後から
挟むようにして駆動側カード３と従動側カード４とが配
置してあり、従動側カード４の前端に一端が回転自在に
連結してある蓋動レバー２の他端部に動作レバー６が当
接自在となっている。The object of the present invention is to provide a thermal relay that improves the accuracy of open-phase operation and has high operational reliability. Figures 5 to 7 a and b show a part of a conventional thermal relay, in which three bimetals 1 are sandwiched from the front and back to detect an abnormality in a three-phase AC power supply, and a drive side card 3 and a driven side A card 4 is arranged, one end of which is rotatably connected to the front end of the driven card 4, and an operating lever 6 can come into contact with the other end of the lid operating lever 2.
動作レバー６の上部は動作レバー支持枠８によって回転
自在に支持してある支軸９を熔接して回転自在となって
いる。しかして、今主回路に過電流が流れると、３本の
バイメタル１が前方に孫み、駆動側カード３を前方に押
動する。ここで動作レバ−６は第７図ａに示すように一
定の荷重で差動レバー２の池端の動きを阻止するから、
差動レバー２は矢印イの方向に回転モーメントが生じ、
それによって従動側カード４に矢印口の方向の力が作用
し、従動剛力ード４は破線のようにずれ動く。この従動
側カード４の動きのばらつきは動作レバー６と差動レバ
ー２との接触点０のばらつきを生じさせ、過電流動作精
度のばらつきの原因となる欠点があった。第７図ｂは欠
相時の動作を示すもので「従動側カード４が中央のバイ
メタル軍もこよって後方に押動されるため、差動レバー
２は駆動側力−ド３との接触点ｄ３を中心として左回り
に回転しようとするが、動作レバー６と差動レバー２と
の接触点ｄ，が回転度合に応じていずれかにずれること
になり「 このため欠相動作精度が不安定となる欠点が
あった。本発明は上記の欠点を解消するために提供した
ものであり、以下一実施例に基いて詳述する。The upper part of the operation lever 6 is rotatably supported by a support shaft 9 rotatably supported by an operation lever support frame 8 by welding. When an overcurrent flows in the main circuit, the three bimetals 1 move forward and push the drive card 3 forward. Here, since the operating lever 6 prevents the movement of the end of the differential lever 2 with a constant load as shown in FIG. 7a,
A rotational moment is generated in the differential lever 2 in the direction of arrow A,
As a result, a force in the direction of the arrow is applied to the driven card 4, and the driven rigid card 4 shifts as shown by the broken line. This variation in the movement of the driven card 4 causes variation in the contact point 0 between the operating lever 6 and the differential lever 2, which has the drawback of causing variation in the accuracy of overcurrent operation. FIG. 7b shows the operation in the event of a phase failure. As the driven side card 4 is pushed backward by the central bimetal force, the differential lever 2 contacts the driving side force card 3 at the contact point d3. However, the contact point d between the operating lever 6 and the differential lever 2 shifts to either direction depending on the degree of rotation, and the accuracy of the open phase operation becomes unstable. The present invention was provided to solve the above-mentioned drawbacks, and will be described in detail below based on one embodiment.
第１図は本発明の一実施例の一部省略正面図で、ヒータ
巻片１０を外周に絶縁材１１を介して巻回した３個のバ
イメタル軍曹こは夫々３相交流の各相が接続されも過電
流時へ各バイメタル軍の下端が前方（図面では左方）に
榛むようになっている。動作レバー６は第２図に示すよ
うにト動作レバー支持枠蟹の最孔雪乳こ沿って前後に移
動自在な支軸９を中央部に熔醸して回転自在に支持して
ありも弟軍図において右回りに回転することによりへ接
点功襖機構部陣の可動接点板電３をＮＣ接点官亀からＮ
Ｏ接点亀６側に反転させるようになっている。また動作
レバー支持枠燈と支藤９との間には３角状の突起亀噂を
有する動作レバー当援板１７が配置してあり「動作レバ
ー鼠ま突起亀途を支点として最孔軍をの範囲内で自由に
動けるようになっている。駆動側カード８！ま各バイメ
タル軍の前面側に当援自在となっており「従動側カード
恥ま各バイメタル軍の後面側に当接自在となっている。
そして「従動側カード４の前端には差動レバー傘の一端
が回転自在に連結してある。また、駆動側カード３の前
端は差動レバー２の突起電離こ接触点ｄ３で当接しｔバ
イメタル軍と駆動側カード８及び従動側カード亀との力
の作用線と「上記援鮫点ｄ３での力の作用線とが同一直
線上に位置するように構成してある。更に葦動レバー乳
こは突起富葱の両側に別の突起軍９６２０を夫々設けて
あり「両突起１９，２８１こ亘つて動作レバー６を当接
し動作レバー当接板富７の突起軍Ｓが「表勤レバー２の
両突起もｇ； ２■の中間部分に位置するように各部品
は配置してある。しかして「今主回路が過電流状態とな
ると各バイメタル軍の下端が前方に孫み「駆動側力…ド
翁を第４図ａに示すように前方に押動する。この押動は
差敷レバー溝の突起翼韓１こ加わると共に、筆勤レバー
２の両側の突起軍９，２８から動作レバー６に加わり、
動作レバー６は前方に押動されるが、動作レバー６は動
作レバー当綾板亀７の突起１６を支点としてある程度自
由に動けるように支持してあるため「動作レバー６と両
突起蔓９９ ２８との接触点ｄ，．ｑがずれるというこ
とがなくなりへ安定した動きをすることになる。第亀図
り‘ま中央のバイメタル軍が欠相した場合を示すもので
〜叢敷レバー歌ま突起官蚤を支点として左回りに回転し
ようとするが「動作レバー合は２個の突起富９身 空Ｑ
と当接し「動作レバー当接板亀計の突起軍８を支点とし
てある程度自由に動くことができるようになっているの
で「接触点ｄ，亨 ｄ２の位置がずれるということがな
く、動作レバー６は安定した動きをすることになる。本
発明は上述のように「接点切手敷機構部の動作レバーと
菱勤レバーの接触点を２点とすると共に両接触点間に差
動レバーと駆動側カードとの接触点を配し〜動作しバ山
が差敷レバーとの両接触点の中間部を支点として自由に
動くことができるようにしたから、過電流動作時及び欠
相動作時に差敷レバ一が、駆動側カードｌこよって前方
に押圧された場合にあっても「差動レバーは駆動側カー
ドとの接触点の両側の２点で動作レバーと接触している
ため「動作レバーからの荷重を小さくすることができる
と共に「両接触点がずれるということがなくなって「動
作レバーを安定して押動することができへ各部品の寸法
や組立てにばらつきがあったとしても過電流動作精度及
び欠相動作精度が共に向上しも動作信頼性の高いサーマ
ルリレーが得られる効果を有する。FIG. 1 is a partially omitted front view of an embodiment of the present invention, in which three bimetal coils each having a heater coil 10 wound around the outer periphery via an insulating material 11 are connected to each phase of a three-phase alternating current. However, in the event of an overcurrent, the bottom end of each bimetal arm will protrude forward (to the left in the drawing). As shown in Fig. 2, the operating lever 6 is rotatably supported by a support shaft 9 in the center that is movable back and forth along the most hole of the operating lever support frame. By rotating clockwise in the figure, the movable contact plate 3 of the contact mechanism section can be moved from the NC contact plate to N.
It is designed to be reversed to the O contact turtle 6 side. In addition, an operation lever support plate 17 having a triangular protrusion is arranged between the operation lever support frame light and the support plate 9. The driving side card 8! can freely support the front side of each bimetal army, and the driving side card 8! can freely attack the rear side of each bimetal army. It has become.
One end of the differential lever umbrella is rotatably connected to the front end of the driven card 4.The front end of the driving card 3 is brought into contact with the contact point d3 of the protrusion of the differential lever 2, and the bimetallic The line of action between the force, the driving side card 8, and the driven side card turtle is arranged so that the line of action of the force at the reinforcement point d3 is located on the same straight line. In this case, another protrusion group 9620 is provided on both sides of the protrusion 19,281, and the operation lever 6 is brought into contact with the protrusion S of the operation lever abutting Itadomi 7. Each part is arranged so that both protrusions are located in the middle of g; ...The old man is pushed forward as shown in Fig. 4a.This pushing force is applied to the projections 9 and 28 on both sides of the writing lever 2, and the operating lever is Join 6,
The operating lever 6 is pushed forward, but since the operating lever 6 is supported so that it can move freely to some extent using the protrusion 16 of the operating lever twill plate turtle 7 as a fulcrum, the "operating lever 6 and both protrusions 99 28 The contact points d and q will not shift and will move stably.This indicates a case where the bimetal force in the center of the turtle is out of phase. I try to rotate counterclockwise using the flea as a fulcrum, but ``When the action lever is engaged, there are two protrusions, 9 pieces, empty Q.
Since the contact points d and d2 are able to move freely to some extent using the protrusion 8 of the operating lever contact plate as a fulcrum, the operating lever 6 As mentioned above, the present invention provides two points of contact between the operating lever and the lever of the contact stamp mechanism, and a differential lever and a drive side between the two contact points. Since the contact point with the card is arranged so that the lever can move freely using the middle part of the contact point with the lever as a fulcrum, the lever can be moved freely during overcurrent operation or open phase operation. Even if the lever 1 is pushed forward by the drive card l, the differential lever is in contact with the operating lever at two points on either side of the point of contact with the drive card, so In addition to reducing the load, the operating lever can be pushed stably without the contact points shifting, and even if there are variations in the dimensions or assembly of each part, overcurrent operation will not occur This has the effect that a thermal relay with high operational reliability can be obtained even though both accuracy and open-phase operation accuracy are improved.
第雷図は本発明の一実施例の一部省略正面図、第２図は
同上の一部斜視図、第３図は同上の動作レバー当綾板の
斜視図、第４図ａ，軸ま夫々同上の動作説明図も第馬図
は従来例の一部斜視図も第辱図は駆動側カードと従動脚
力ード部分の斜視図「第７図ａ，ｂは夫々同上従来例の
動作説明図である。
川まバイメタル、２は差動レバー、３は駆動側カード、
乳ま従動側カード「 ５は綾点切換機構部ｔ ６は動作
レバー「ｄｉ，ｄ２，ｄ３は夫々接触点である。
第１図
第２図
第３図
第４図
第５図
第６図
第７図Fig. 2 is a partially omitted front view of one embodiment of the present invention, Fig. 2 is a partially perspective view of the same as above, Fig. 3 is a perspective view of the operating lever support plate of the same as above, Fig. 4a is a shaft or Figure 7 is a perspective view of a part of the conventional example; Figure 7 is a perspective view of the driving side card and the driven leg power portion; Figure 7 a and b are illustrations of the operation of the conventional example. The figure is: Kawama bimetal, 2 is a differential lever, 3 is a drive side card,
Breast driven side card 5 is the twill point switching mechanism t 6 is the operating lever ``di, d2, d3 are contact points respectively. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7
Claims (1)
バーの中間部に圧接する駆動側カードと、前端が差動レ
バーの一端に回転自在に連結され欠相時バイメタルによ
り後方に押動される従動側カードとを有し、接点切換機
構部の動作レバーと差動レバーの接触点を２点とすると
共に両接触点間に差動レバーと駆動側カードとの接触点
を配し、動作レバーが差動レバーと両接触点の中間部を
支点として自由に動くことができるようにして成ること
を特徴とするサーマルリレー。1 A drive-side card that is pushed forward by a bimetal in the event of an overcurrent and press-contacted to the middle part of the differential lever, and the front end is rotatably connected to one end of the differential lever and is pushed backward by the bimetal in the event of a phase failure. The operating lever has two contact points between the operating lever and the differential lever of the contact switching mechanism, and the contact point between the differential lever and the driving card is arranged between both contact points, and the operating lever has a driven side card. A thermal relay is characterized in that it can move freely using a differential lever and an intermediate portion between both contact points as a fulcrum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14536877A JPS607334B2 (en) | 1977-11-30 | 1977-11-30 | thermal relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14536877A JPS607334B2 (en) | 1977-11-30 | 1977-11-30 | thermal relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5476983A JPS5476983A (en) | 1979-06-20 |
| JPS607334B2 true JPS607334B2 (en) | 1985-02-23 |
Family
ID=15383590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14536877A Expired JPS607334B2 (en) | 1977-11-30 | 1977-11-30 | thermal relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS607334B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190139646A (en) * | 2018-06-08 | 2019-12-18 | 현대모비스 주식회사 | Head up display appratus for vehicle |
| KR20190139645A (en) * | 2018-06-08 | 2019-12-18 | 현대모비스 주식회사 | Head up display appratus for vehicle |
-
1977
- 1977-11-30 JP JP14536877A patent/JPS607334B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190139646A (en) * | 2018-06-08 | 2019-12-18 | 현대모비스 주식회사 | Head up display appratus for vehicle |
| KR20190139645A (en) * | 2018-06-08 | 2019-12-18 | 현대모비스 주식회사 | Head up display appratus for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5476983A (en) | 1979-06-20 |
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