JPS633075Y2 - - Google Patents
Info
- Publication number
- JPS633075Y2 JPS633075Y2 JP1979102760U JP10276079U JPS633075Y2 JP S633075 Y2 JPS633075 Y2 JP S633075Y2 JP 1979102760 U JP1979102760 U JP 1979102760U JP 10276079 U JP10276079 U JP 10276079U JP S633075 Y2 JPS633075 Y2 JP S633075Y2
- Authority
- JP
- Japan
- Prior art keywords
- return
- return rod
- rod
- engaging
- sliding
- 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
- 238000003825 pressing Methods 0.000 claims description 12
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Breakers (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は復帰桿を操作することにより接点を自
動復帰式または手動復帰式に切換える切換装置付
熱動形過電流継電器の改良に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a thermal overcurrent relay with a switching device that switches the contact between an automatic return type and a manual return type by operating a return rod.
従来熱動形過電流継電器の自動復帰・手動復帰
の切換え装置としては、第１図ないし第４図に示
すように復帰桿１の継電器箱体２に対する挿入位
置をねじ２４の有無によつて変位する方法が採ら
れていた。すなわち第１図および第２図は自動復
帰式を示し、図において１は自動・手動復帰切換
え用の復帰桿で継電器箱体２の上壁２ａに設けら
れた切欠ぎ溝３に嵌挿され、常時は下端の押圧用
突起１ｂに係止されたスプリング４の反発力によ
り図示上方へ押圧げられて、継電器箱体２に設け
られたストツパー２ｂにその切欠ぎ部Ａの下端面
１ａを当接して係止状態にある。一方過電流検出
部は一般的に次のように構成されている。５は電
源端子であり、ヒーター６の一端が接続されてい
る。ヒーター６の他端はバイメタル板７の一端に
溶接等により固着され、バイメタル板７の他端は
負荷端子８に接続される。バイメタル板７の湾曲
方向は図示左方向すなわち矢印Ｍ方向となるよう
組付けられる。９はバイメタル板７と係合しバイ
メタル板７の湾曲動作を引外しレバー１０に伝達
する連動板で、バイメタル板７と連動するよう形
成される。引外しレバー１０は長短の２片から形
成されており、長片１０ａの先端１０ａは前記連
動板９の一端と係合し、他端は継電器箱体の上壁
２ａ内側部に組付けられた調整レバー１１に支軸
１２により回動可能に枢支されている。１３は調
整レバー１１を変位させて動作電流を変更させる
調整ツマミである。１４はコ字状の支持部を有す
る共通端子台でコ字状の上辺支持部１４ｂには、
下方端に接触スプリング１５の一端を係止したス
プリング支え１６の上方端に設けられた角孔（図
示せず）が嵌合されており、また下辺支持部１４
ａには下方端に可動接点１７を固着し前記接触ス
プリング１５の他端を係止した可動接触板１８の
上方端が係合されており、このように可動接触板
１８とスプリング支え１６は接触スプリング１５
によつて引張り力を受け、スプリング支え１６は
上方端の嵌合支持部１４ｂを支点に回動可能であ
り、可動接触板１８はその上方端１８ａを支持部
１４ａに当接させ、その支持部１４ａを支点とし
て回動可能である。
As shown in Figs. 1 to 4, a conventional switching device for automatic return/manual return of a thermal overcurrent relay has a method in which the insertion position of the return rod 1 with respect to the relay box body 2 is changed depending on the presence or absence of a screw 24. A method was adopted to do so. That is, FIGS. 1 and 2 show an automatic return type, and in the figures, 1 is a return rod for switching between automatic and manual return, which is inserted into a notch 3 provided in the upper wall 2a of the relay box body 2. Normally, the lower end surface 1a of the cutout A is pressed upward in the figure by the repulsive force of the spring 4 that is engaged with the pressing projection 1b at the lower end, and the lower end surface 1a of the notch A contacts the stopper 2b provided on the relay box body 2. It is in a locked state. On the other hand, the overcurrent detection section is generally configured as follows. 5 is a power terminal, to which one end of the heater 6 is connected. The other end of the heater 6 is fixed to one end of a bimetal plate 7 by welding or the like, and the other end of the bimetal plate 7 is connected to a load terminal 8. The bimetal plate 7 is assembled so that the direction of curvature is to the left in the figure, that is, in the direction of arrow M. Reference numeral 9 denotes an interlocking plate that engages with the bimetal plate 7 and transmits the bending motion of the bimetal plate 7 to the tripping lever 10, and is formed to interlock with the bimetal plate 7. The tripping lever 10 is formed of two pieces, a long piece and a short piece, and the tip 10a of the long piece 10a engages with one end of the interlocking plate 9, and the other end is assembled to the inner side of the upper wall 2a of the relay box. It is rotatably supported on the adjustment lever 11 by a support shaft 12 . Reference numeral 13 is an adjustment knob that displaces the adjustment lever 11 to change the operating current. Reference numeral 14 denotes a common terminal block having a U-shaped support portion, and the U-shaped upper support portion 14b includes:
A square hole (not shown) provided at the upper end of the spring support 16 that locks one end of the contact spring 15 is fitted into the lower end, and the lower side support portion 14
The upper end of a movable contact plate 18 having a movable contact 17 fixed to the lower end and the other end of the contact spring 15 is engaged with a, and the movable contact plate 18 and the spring support 16 are in contact with each other in this way. Spring 15
The spring support 16 can rotate around the fitting support part 14b at the upper end as a fulcrum, and the movable contact plate 18 has its upper end 18a in contact with the support part 14a, and It is rotatable about 14a as a fulcrum.
１９はｂ固定接触台で継電器箱体２に取付けら
れており、前記可動接点１７と対応する部分にｂ
固定接点２０が固着されている。第１図は可動接
点１７がｂ固定接点２０へ当接した場合の図を示
しているが、前記引外しレバー１０の短片１０ｂ
が時計方向に回動力を受けて、その先端でスプリ
ング支え１６を押すと、そのスプリング支え１６
に係合された接触スプリング１５も移動し、それ
につれて可動接触板１８に対する引張り方向が変
位し、可動接触板１８は共通端子台の支持部１４
ａを支点として時計方向に回動し、ａ固定接触台
２１を介して継電器箱体２に取付けられたａ接点
台２２のａ固定接点２３側に反転して当接し、い
わゆるトグル機構の反転動作を行なう。このａ固
定接点２３側に反転した接点は、過電流がしや断
されバイメタル板７、連動板９、引外しレバー１
０が復元してもトグル機構が復帰し得ないよう反
転後の復帰距離、すなわち接点２０と２３間の距
離を充分大きくとつている。可動接触板１８の復
帰は復帰桿１をスプリング４の反発力に抗して押
込み、その先端の押圧用突起１ｂでａ接点台２２
を右方向に変位し、可動接触板１８をａ固定接点
２３で押してトグル機構を反転せしめ復帰させ
る。復帰操作が終ればスプリング４の反発力によ
り押上げられ復帰桿１は復元する。 Reference numeral 19 denotes a b fixed contact base, which is attached to the relay box body 2, and has a b fixed contact base at a portion corresponding to the movable contact 17.
A fixed contact 20 is fixed. FIG. 1 shows a case where the movable contact 17 contacts the fixed contact b 20, and the short piece 10b of the tripping lever 10
receives rotational force in the clockwise direction and pushes the spring support 16 with its tip, the spring support 16
The contact spring 15 engaged with the movable contact plate 18 also moves, and the direction of tension on the movable contact plate 18 is displaced accordingly, and the movable contact plate 18
It rotates clockwise around A as a fulcrum, and reverses and contacts the A fixed contact 23 side of the A contact base 22 attached to the relay box body 2 via the A fixed contact base 21, resulting in a so-called reversal operation of a toggle mechanism. Do this. The contacts reversed to the fixed contact 23 side are connected to the bimetal plate 7, the interlocking plate 9, and the tripping lever 1 because the overcurrent is quickly cut off.
The return distance after reversal, that is, the distance between contacts 20 and 23, is set sufficiently large so that the toggle mechanism cannot return even if 0 is restored. To return the movable contact plate 18, push the return rod 1 against the repulsive force of the spring 4, and use the pressing protrusion 1b at the tip of the return rod 1 to press the a contact block 22.
is displaced to the right, and the movable contact plate 18 is pushed by the a fixed contact 23 to reverse the toggle mechanism and return it to its original position. When the return operation is completed, the return rod 1 is pushed up by the repulsive force of the spring 4 and returns to its original state.
このように構成された熱動形過電流継電器を自
動復帰式とするためには、第３図、第４図のよう
に復帰桿１を押し込んだ状態で復帰桿１の切欠ぎ
部Ａに対応する継電器箱体２に設けたねじ孔２ｃ
にネジ２４をねじ込んで、復帰桿１の切欠ぎ部Ａ
の下端面１ａに係合させ、復帰桿１を復帰押込位
置に保つことにより達成される。 In order to make the thermal overcurrent relay configured in this way automatic reset type, it is necessary to press the return rod 1 into the notch A of the return rod 1 as shown in Figs. 3 and 4. Screw hole 2c provided in relay box body 2
Screw the screw 24 into the notch A of the return rod 1.
This is achieved by engaging the lower end surface 1a of the return rod 1 and keeping the return rod 1 at the return pushing position.
つぎに、動作について説明すると、電源負荷端
子間に挿入されたヒーター６に規定以上の過電流
が流れると発熱してバイメタル板７が左側方向に
湾曲し、したがつてこれに係合した連動板９を左
側方向に移動する。この移動に伴い引外しレバー
１０が支軸１２を支点として時計方向に回動し、
スプリング支え１６を押して、トグル機構の反転
作用により可動接触板１８が共通端子台１４の支
持部１４ａを支点として先端を時計方向に移動し
ｂ固定接点２０側からａ固定接点２３側へ反転す
る。この場合、復帰桿１が第１図のように手動復
帰位置にあれば、過電流がしや断されて引外しレ
バーが復帰し、その短片１０ｂがスプリング支え
１６から離隔しても接点は復帰せず、事故回復後
は復帰桿１を押し込んで人為的に復帰させる。ま
た、復帰桿１を第３図に示すように自動復帰の位
置に設定すれば復帰桿１を押し込んだ状態と同位
置に固定接点２３が存在するため可動接触板１８
の反転動作時の解離ストローク（ｂ固定接点から
開放位置までの距離）が小さく引外しレバー１０
の復元に伴い可動接触板１８は追随し反転復帰す
る。 Next, to explain the operation, when an overcurrent exceeding a specified value flows through the heater 6 inserted between the power supply load terminals, it generates heat and the bimetal plate 7 curves to the left, and the interlocking plate engaged with the heater 6 generates heat. Move 9 to the left. Along with this movement, the trip lever 10 rotates clockwise about the support shaft 12,
By pushing the spring support 16, the movable contact plate 18 moves its tip clockwise using the support portion 14a of the common terminal block 14 as a fulcrum due to the reversing action of the toggle mechanism, and is reversed from the b fixed contact 20 side to the a fixed contact 23 side. In this case, if the return rod 1 is in the manual return position as shown in FIG. Instead, after recovering from the accident, the user presses the return rod 1 to artificially return the vehicle. Furthermore, if the return rod 1 is set to the automatic return position as shown in FIG.
The tripping lever 10 has a small disengagement stroke (distance from the fixed contact b to the open position) during the reversal operation.
As the movable contact plate 18 is restored, the movable contact plate 18 follows and reverses itself.
このように熱動形過電流継電器の自動復帰・手
動復帰の切換えが、従来方法によれば前述のよう
に、復帰桿１をネジ２４により位置規制するよう
になつているため、継電器箱体に余分なねじ加工
や、ねじ部品を使用することになり、価格が増
し、また、ねじ２４の取付面が継電器の使用状態
においては継電器箱体２の下側面にあり、継電器
箱体下方には通常スペースがあまりなく、したが
つて、ねじ締付けに困難性があつた。また、復帰
桿１の継電器箱体２への取付けに際し、継電器箱
体の上壁２ａ部分に切欠ぎ溝３を設けているた
め、上壁２ａ部分が途中で分割されたような形状
となり、継電器箱体２がモールド成形品であり、
モールド成形品に前記のような切欠ぎ溝３が形成
されていると経年的収縮によつて変形を起しやす
く、復帰桿１の摺動に当つて支障を来したり、動
作電流値のバラツキに影響を及ぼすなど欠点を生
じていた。また、自動・手動復帰を切換える他の
例として実開昭50−91771号公報に示されたもの
があるが、この場合においては、第５図に示すよ
うに（以下公報記載の符号に100を加えた符号で
表示する）復帰棒１０７の継電器箱体１１０への
組込み部が、１１０ｃとして示されている切欠ぎ
溝のため、継電器箱体１１０が変形しやすく、復
帰棒１０７の摺動に支障を来すという欠点を同様
にもつている。また、自動・手動復帰を切換える
さらに他の例として、実開昭54−84570号公報に
示す如きものがある。この場合においては、同公
報の図により説明すると、復帰釦２５ａ（同公報
第１図参照）を押し下げることにより常開接点１
７を常閉接点１３側に接近して保持せしめ、自動
復帰可能に構成し、ケーシング２３に穿設した係
合穴３２に係入可能に設けられ、弾性を有した係
止部３１が復帰釦２５ａに突設され、前記復帰釦
２５ａがケーシング２３ａを挿通する部分は、符
号が付けられていないが同公報の第２図および第
３図に示されているように、一方が開放された切
欠ぎ溝を形成しており、復帰釦２５ａをこのこの
切欠ぎ溝に嵌挿した後ケーシングカバー（無符
号）で閉鎖する構成のものが記載されている。即
ち、同公報に従来例として示された第５図および
第６図には、復帰釦２５の貫通部が切欠ぎ溝とし
て明示されており、考案の実施例として示された
前記第２図および第３図も同様に挿通部を切欠ぎ
溝としている。 In this way, according to the conventional method, the switching between automatic return and manual return of a thermal overcurrent relay is done by regulating the position of the return rod 1 with the screw 24, as described above. This requires extra screw machining and the use of threaded parts, which increases the price.Also, the mounting surface of the screw 24 is on the lower side of the relay box 2 when the relay is in use, and there is usually no screw 24 on the lower side of the relay box. There wasn't much space, so it was difficult to tighten the screws. In addition, when attaching the return rod 1 to the relay box body 2, since the notch groove 3 is provided in the upper wall 2a of the relay box, the upper wall 2a becomes shaped as if it is divided in the middle, and the relay The box body 2 is a molded product,
If the notch groove 3 as described above is formed in a molded product, it is likely to be deformed due to shrinkage over time, which may cause problems in the sliding of the return rod 1 or cause variations in the operating current value. This had some disadvantages, such as affecting the Another example of switching between automatic and manual return is shown in Japanese Utility Model Application Publication No. 50-91771, but in this case, as shown in Fig. Since the part where the return rod 107 is assembled into the relay box 110 (indicated by an added symbol) has a notched groove shown as 110c, the relay box 110 is easily deformed, which hinders the sliding of the return rod 107. It also has the disadvantage of causing Still another example of switching between automatic and manual return is as shown in Japanese Utility Model Application No. 54-84570. In this case, to explain with reference to the figure in the same publication, by pressing down the return button 25a (see Figure 1 of the same publication), the normally open contact 1
7 is held close to the normally closed contact 13 side and configured to be able to return automatically, and a locking portion 31 having elasticity is provided so as to be able to be engaged with an engagement hole 32 bored in the casing 23, and is configured to be able to return automatically. 25a, through which the return button 25a passes through the casing 23a, is a notch with one side open as shown in FIGS. 2 and 3 of the same publication, although no reference numerals are attached. A configuration is described in which a return button 25a is fitted into the notched groove and then closed with a casing cover (no code). That is, in FIGS. 5 and 6 shown as conventional examples in the same publication, the penetrating portion of the return button 25 is clearly shown as a notched groove, whereas in FIGS. 2 and 6 shown as examples of the invention, Similarly, in FIG. 3, the insertion portion is a cutout groove.
前記実開昭50−91771号公報及び実開昭54−
84570号公報に示されたものの構成は、本願にお
いて従来例として示した第１図乃至第４図におい
て復帰桿１が箱体２を貫通する部分が切欠ぎ溝３
として構成されていると全く同様の構成であり、
前述のように切欠ぎ溝３によつて箱体の上壁２ａ
部分が途中で分割された形となり、継電器箱体２
のモールド成形品の収縮による変形を起しやす
く、復帰桿１の摺動に支障を来すおそれがあり、
さらに動作電流値のバラツキに影響を及ぼすとい
う欠点を有する。
The above-mentioned Utility Model Application Publication No. 1983-91771 and Utility Model Application Publication No. 1987-
84570, the part where the return rod 1 penetrates the box body 2 is the cutout groove 3 in FIGS. 1 to 4, which are shown as conventional examples in this application.
The configuration is exactly the same as that of
As mentioned above, the upper wall 2a of the box body is
The part is divided in the middle, and the relay box body 2
The molded product is likely to be deformed due to shrinkage, which may impede the sliding of the return rod 1.
Furthermore, it has the disadvantage of affecting variations in operating current values.
本考案は上記の従来の欠点を解消し、復帰桿と
摺動する継電器箱体の上壁部分を従来の切欠ぎ溝
形状から貫通孔方式に改良し、継電器箱体のモー
ルド収縮による変形を防止し、動作特性を安定さ
せ、しかも復帰桿の摺動操作を円滑にすることが
でき、さらに手動復帰・自動復帰の切換えが使用
状態においても継電器箱体の前面から操作できる
ようにしたものである。 This device eliminates the above-mentioned conventional drawbacks, improving the upper wall part of the relay box against which the return rod slides from the conventional notched groove shape to a through hole type, preventing deformation of the relay box due to mold shrinkage, stabilizing operating characteristics, and making it possible to smoothly operate the sliding operation of the return rod.Furthermore, it also makes it possible to switch between manual and automatic return from the front of the relay box even when in use.
本考案は上記問題点を解決するため、復帰桿を
操作することにより接点の復帰を促すようにした
熱動形過電流継電器において、継電器箱体の上壁
に設けられた摺動ガイド面を有する貫通孔と、こ
の貫通孔の下部に設けられ摺動ガイド面および少
なくとも２個の凹部を有する係合部と、この係合
部および前記貫通孔を挿通して上方端部を継電器
箱体外部に突出させ、他方の下端部に接点の押圧
用突起を有する復帰桿と、この復帰桿を上方に付
勢するスプリングと、前記復帰桿に、通常は摺動
面より弾性的に突出し、押圧力により摺動面内に
後退可能な凸部が復帰桿操作により前記係合部と
弾性的に係合して復帰桿に２位置をとらしめる切
換装置部とから成るようにしたものである。
In order to solve the above-mentioned problems, the present invention provides a thermal overcurrent relay that promotes the return of the contacts by operating a return rod, which has a sliding guide surface provided on the upper wall of the relay box. a through hole, an engaging part provided at the lower part of the through hole and having a sliding guide surface and at least two recesses, and an upper end thereof inserted through the engaging part and the through hole to the outside of the relay box body. A return rod that protrudes and has a contact pressing protrusion at the other lower end, a spring that biases the return rod upward, and a spring that normally protrudes elastically from the sliding surface and is pressed by the pressing force. A convex portion that can be retracted into the sliding surface is configured to elastically engage with the engaging portion when the return rod is operated, and a switching device portion that allows the return rod to assume two positions.
また、切換装置部が複数の溝切込みによる縦格
子状の係合片から成り、その各係合片に復帰桿の
摺動面より突出する凸部を設け、あるいは、係合
片が復帰桿の摺動方向と直角方向に弾力性を有
し、凸部を含めた各係合片の厚みが復帰桿の厚み
と同等以下の厚みから成るようにしたものであ
る。 In addition, the switching device part consists of vertical lattice-shaped engagement pieces formed by cutting a plurality of grooves, and each of the engagement pieces is provided with a convex portion that protrudes from the sliding surface of the return rod, or the engagement piece is formed on the return rod. It has elasticity in the direction perpendicular to the sliding direction, and the thickness of each engaging piece including the convex portion is equal to or less than the thickness of the return rod.
以下、本考案を図面に示す実施例に基づいて説
明する。
Hereinafter, the present invention will be explained based on embodiments shown in the drawings.
第６図乃至第１０図は本考案の実施例を示し、
第１図乃至第４図と同一又は相当部分については
同一符号で表示する。 6 to 10 show embodiments of the present invention,
The same or corresponding parts as in FIGS. 1 to 4 are indicated by the same reference numerals.
第６図、第７図は手動復帰式を示すもので、従
来例の第１図、第２図に対応し、第９図、第１０
図は自動復帰式で従来例の第３図、第４図に対応
するものである。 Figures 6 and 7 show the manual return type, and correspond to Figures 1 and 2 of the conventional example, and Figures 9 and 10.
The figure shows an automatic return type, which corresponds to the conventional example shown in FIGS. 3 and 4.
本考案は復帰桿および復帰桿周辺の改良であつ
て、過電流検出部や接点機構部については従来実
施例と同様に構成されている。 The present invention is an improvement of the return rod and its surroundings, and the overcurrent detection section and contact mechanism section are constructed in the same manner as in the conventional embodiment.
第６図は本考案の実施例を示す正面図、第７図
はそのＸ−X′側面断面図、第８図は本考案の要
部を示す拡大図で、ａ，ｂはその一部破断した分
解斜視図であり、ｃは要部正面図である。１は復
帰桿で継電器箱体２の上壁２ａに設けられた摺動
ガイド面３a′（第８図参照）を有する貫通孔３ａ
にその上部を挿通し、常時は継電器箱体内下端部
２ｄと復帰桿１の下端押圧用突起１ｂ間に係止し
たスプリング４の復帰反発力により図示上方に押
し上げられている。復帰桿１の上方には第８図ａ
の一点鎖線で示すように接点の自動復帰、手動復
帰切換え用の切換装置部Ｂが設けられており、切
換装置部Ｂは縦格子状の係合片１ｃ，１c′から形
成され、各係合片１ｃ，１c′の中間部付近には復
帰桿１の摺動方向と直角方向で互に逆向きに凸部
１ｄ，１d′が設けられている。また、係合片１
ｃ，１c′は復帰桿１の厚みに対し互に反対側を削
肉した形状で復帰桿１の摺動方向と直角方向に弾
力性を有し、凸部１ｄ，１d′を含む各係合片１
ｃ，１c′の厚みは復帰桿１の厚みと同等またはそ
れ以下になるように形成されている。このように
形成された切換装置部Ｂに対応する継電器箱体２
の内部には第８図ｂ，ｃに示すように凹部２ｅ，
５ｆおよび摺動ガイド面２ｇ，２ｈから形成され
た係合部Ｋが復帰桿１の両側方に設けられてお
り、切換装置部Ｂの係合片１ｃ，１c′の凸部１
ｄ，１d′が係合可能となつている。第６図および
第８図ｃの手動復帰方式では、復帰桿１の係合片
１ｃ，１c′の凸部１ｄ，１d′が継電器箱体２の係
合部Ｋに設けられた凹部２ｅに係合し、スプリン
グ４の反発力により上壁２ａに当接されている。 Fig. 6 is a front view showing an embodiment of the present invention, Fig. 7 is a side sectional view taken along the line X-X', and Fig. 8 is an enlarged view showing the main parts of the present invention, and a and b are partially broken views. FIG. Reference numeral 1 denotes a return rod, which is a through hole 3a provided on the upper wall 2a of the relay box body 2 and having a sliding guide surface 3a' (see Fig. 8).
The upper part thereof is inserted into the relay box, and is normally pushed upward in the figure by the return repulsive force of the spring 4, which is engaged between the lower end 2d of the relay box interior and the lower end pressing protrusion 1b of the return rod 1. Above the return rod 1, there is a
As shown by the dashed line, a switching device section B is provided for switching between automatic return and manual return of the contact, and the switching device section B is formed of vertical grid-shaped engagement pieces 1c and 1c', and each engagement Convex portions 1d and 1d' are provided near the intermediate portions of the pieces 1c and 1c' in opposite directions perpendicular to the sliding direction of the return rod 1. In addition, the engaging piece 1
c and 1c' have a shape in which the opposite sides of the return rod 1 are thinned, and have elasticity in a direction perpendicular to the sliding direction of the return rod 1, and each engagement including the convex portions 1d and 1d' Piece 1
The thicknesses of c and 1c' are formed to be equal to or less than the thickness of the return rod 1. Relay box body 2 corresponding to switching device section B formed in this way
As shown in FIG. 8b and c, there are recesses 2e,
5f and sliding guide surfaces 2g, 2h are provided on both sides of the return rod 1, and convex portions 1 of the engaging pieces 1c, 1c' of the switching device section B are provided.
d and 1d' can be engaged. In the manual return method shown in FIG. 6 and FIG. The upper wall 2a is brought into contact with the upper wall 2a by the repulsive force of the spring 4.
なお、第８図ｂの傾斜面２ｉは復帰桿１を貫通
孔３ａに装着するときの作業性を向上するために
形成されたものである。 Incidentally, the inclined surface 2i in FIG. 8b is formed in order to improve workability when installing the return rod 1 into the through hole 3a.
復帰桿１を貫通孔３ａに装着するには、第７図
ａの２点鎖線で示す位置より復帰桿１を矢印Ｅの
方向に挿入し、第７図ｂの位置に達した後復帰桿
１の下部を矢印Ｆの方向に回転させ、第７図ａの
実線の位置に至らしめる。この場合、復帰桿１の
カギ状部分１ｆが突出しているが、前記傾斜面２
ｉを設けたことにより円滑に挿入できる。スプリ
ング４は第７図ａの実線の位置にある復帰桿１の
下部と継電器箱体２の内下端部２ｄとの間に係止
されるが、上述の復帰桿１を装着する際にその装
着前に係合しておけば組立て易い。復帰桿１の装
着後ａ固定接触台２１を装着し、このａ固定接触
台２１の一部２１ａにより復帰桿１の側方を囲
い、復帰桿１の脱落を防止すると共に復帰操作の
際の摺動ガイドとする。１ｇはスプリング４の係
合用孔である。 To attach the return rod 1 to the through hole 3a, insert the return rod 1 in the direction of arrow E from the position shown by the two-dot chain line in FIG. 7a, and after reaching the position shown in FIG. Rotate the lower part of the unit in the direction of arrow F to bring it to the position indicated by the solid line in Figure 7a. In this case, the key-shaped portion 1f of the return rod 1 protrudes, but the inclined surface 2
The provision of the i allows for smooth insertion. The spring 4 is locked between the lower part of the return rod 1 at the position indicated by the solid line in FIG. 7a and the inner lower end 2d of the relay box body 2. Assembly is easier if you engage them beforehand. After mounting the return rod 1, the a fixed contact base 21 is attached, and the part 21a of the a fixed contact base 21 surrounds the side of the return rod 1 to prevent the return rod 1 from falling off and to prevent the sliding during the return operation. Use a moving guide. 1g is a hole for engaging the spring 4.
このような状態において、電源、負荷の各端子
５−８間に過電流が流れ、可動接点１７がａ固定
接点２３側に反転した場合の復帰動作は、継電器
箱体２より突出した復帰桿１をスプリング４の反
発力に抗して押し込めば、復帰桿１の下端の押圧
用突起１ｂでａ接点台２２を押すことになり、同
時に可動接点１７も押されてトグルが反転し接点
の復帰にいたる。この復帰桿押し込み時の復帰桿
１に設けられた切換装置部Ｂと継電器箱体２の係
合部Ｋとの位置関係は第８図ｃにおける凸部１
ｄ，１d′が凹部２ｅの最下端へ下つた位置とな
る。また、この場合の復帰桿１の上端は継電器箱
体２の上壁２ａの上端面とほぼ一致するよう寸法
規制すれば復帰桿を必要以上に押し込むのを防止
することができる。 In such a state, if an overcurrent flows between the power supply and load terminals 5-8 and the movable contact 17 is reversed to the A fixed contact 23 side, the return operation will be performed using the return rod 1 protruding from the relay box 2. When pushed in against the repulsive force of the spring 4, the pressing protrusion 1b at the lower end of the return rod 1 pushes the A contact block 22, and at the same time the movable contact 17 is also pushed, the toggle is reversed and the contact returns. Ital. The positional relationship between the switching device portion B provided on the return rod 1 and the engaging portion K of the relay box body 2 when the return rod is pushed in is the convex portion 1 in Fig. 8c.
d and 1d' are at the lowest end of the recess 2e. Further, in this case, if the size of the upper end of the return rod 1 is regulated so that it substantially coincides with the upper end surface of the upper wall 2a of the relay box body 2, it is possible to prevent the return rod from being pushed in more than necessary.
つぎに、自動復帰式として使用する場合は、前
記復帰桿１の押し込みをさらに強力に押し込むこ
とにより達成される。すなわち、復帰桿１のカギ
状部分１ｆの周辺部分は継電器箱体２の上壁２ａ
の上端面から若干はみ出すよう形成されており、
この部分を強力に押し込めば、係合片１ｃ，１
c′の凸部１ｄ，１d′が凹部２ｅと２ｆの中間にあ
る摺動ガイド面２ｇにより押される形となり、係
合片１ｃ，１c′は復帰桿１の摺動方向と直角方向
に弾力性を有するため、凸部１ｄ，１d′は復帰桿
１の厚み内に押し込まれて復帰桿１は押し下げら
れ、凹部２ｆで係合片１ｃ，１c′は弾性復元し
て、凸部１ｄ，１d′は凹部２ｆに係合し復帰桿１
はその位置で保持される。 Next, when used as an automatic return type, this is achieved by pushing the return rod 1 even more forcefully. That is, the peripheral portion of the key-shaped portion 1f of the return rod 1 is connected to the upper wall 2a of the relay box body 2.
It is formed so as to protrude slightly from the upper end surface of the
If you push this part strongly, the engaging pieces 1c, 1
The convex parts 1d and 1d' of c' are pushed by the sliding guide surface 2g located between the concave parts 2e and 2f, and the engaging pieces 1c and 1c' have elasticity in the direction perpendicular to the sliding direction of the return rod 1. Therefore, the protrusions 1d, 1d' are pushed into the thickness of the return rod 1, and the return rod 1 is pushed down, and the engaging pieces 1c, 1c' are elastically restored in the recess 2f, and the protrusions 1d, 1d' is engaged with the recess 2f and the return rod 1
is held in that position.
この状態から手動復帰式に切換えるには、復帰
桿１のカギ状部分１ｆの下面１f′にねじ廻しの先
端等平板を当てて上方へ強力に引き上げることに
より達成される。すなわち、凸部１ｄ，１d′が摺
動ガイド面２ｇに当つて係合片１ｃ，１c′が弾性
変形し、凸部１ｄ，１d′は復帰桿１の厚み肉に押
し込まれて摺動ガイド面２ｇを通過し、凹部２ｅ
で復元してスプリング４の反発力で復帰桿１はそ
の凸部１ｄ，１d′を継電器箱体の上壁２ａの下面
に当接して保持される。 Switching from this state to the manual return type is achieved by applying a flat plate at the tip of a screwdriver to the lower surface 1f' of the key-shaped portion 1f of the return rod 1 and pulling it upward forcefully. That is, the protrusions 1d, 1d' contact the sliding guide surface 2g, causing the engaging pieces 1c, 1c' to be elastically deformed, and the protrusions 1d, 1d' are pushed into the thickness of the return rod 1 and contact the sliding guide surface 2g. 2g and recess 2e.
The return rod 1 is then restored by the repulsive force of the spring 4 and is held with its convex portions 1d and 1d' in contact with the lower surface of the upper wall 2a of the relay box body.
以上詳述したように本考案によれば、継電器箱
体の上壁に設けられた摺動ガイド面を有する貫通
孔と、この貫通孔の下部に設けられ、摺動ガイド
面および少なくとも２個の凹部をそれぞれ両壁に
有する係合部と、この係合部および前記貫通孔を
挿通して上方端部を継電器箱体外部に突出させ、
他方の下端部に接点の押圧用突起を有する復帰桿
と、この復帰桿と継電器箱体との間に介装され復
帰桿を上方に付勢するスプリングと前記復帰桿に
常時は摺動面より弾性的に突出し、押圧力により
摺動面内に後退可能な凸部を設け、この凸部が復
帰桿操作により前記係合部と係合して復帰桿に２
位置をとらしめる切換装置部とから構成したの
で、
復帰桿と摺動する継電器箱体の上壁部分を従
来の切欠ぎ溝形状から貫通孔方式に改良したの
で、継電器箱体のモールド収縮による変形がな
く、動作特性が安定し、しかも復帰桿の摺動操
作を円滑にすることができる。 As detailed above, according to the present invention, a through hole having a sliding guide surface provided on the upper wall of the relay box body, and a through hole having a sliding guide surface provided at the lower part of the through hole and having a sliding guide surface and at least two an engaging portion having recessed portions on both walls, and an upper end portion of the engaging portion that is inserted through the engaging portion and the through hole to protrude outside the relay box;
A return rod having a protrusion for pressing the contact on the other lower end, a spring interposed between the return rod and the relay box body to bias the return rod upward, and a spring that is normally attached to the return rod from the sliding surface. A convex portion that protrudes elastically and can be retracted into the sliding surface by pressing force is provided, and this convex portion engages with the engaging portion when the return rod is operated, and the two
The upper wall of the relay box, which slides on the return rod, has been improved from the conventional notched groove shape to a through-hole type, which prevents deformation due to mold shrinkage of the relay box. There is no friction, the operating characteristics are stable, and the sliding operation of the return rod can be made smoother.
さらに手動復帰、自動復帰の切換えが使用状
態において継電器箱体の前面から操作できる。 Furthermore, switching between manual return and automatic return can be operated from the front of the relay box when in use.
手動復帰、自動復帰の切換えのための余分な
加工や部品を使用する必要がない。 There is no need to use extra processing or parts for switching between manual return and automatic return.
組付けのための形状が単純化されて安価であ
る。 The shape for assembly is simplified and the cost is low.
等の優れた効果を発揮し得る熱動形過電流継電器
を提供することができる。It is possible to provide a thermal overcurrent relay that can exhibit excellent effects such as the following.
第１図は従来の一実施例を示す熱動形過電流継
電器のカバーを一部切欠した手動復帰式の正面
図、第２図はそのＰ−P′断面図、第３図は第１図
の復帰桿を押し込んで自動復帰式として場合の正
面図、第４図はそのＱ−Q′断面図、第５図は従
来の他の実施例を示す熱動形過電流継電器の部分
斜視図、第６図は本考案の一実施例を示す手動復
帰式の正面図で従来例の第１図に相当するもの、
第７図ａ，ｂは第６図のＸ−X′断面図、第８図
は本考案の要部を示す拡大図で、ａ，ｂはその一
部を破断した分解斜視図であり、ｃは要部正面
図、第９図は第６図の復帰桿を押し込んで自動復
帰式とした場合の正面図、第１０図はそのＹ−
Y′断面図である。
１：復帰桿、Ｂ：切換装置部、１ｂ：押圧用突
起、１ｃ，１c′：係合片、１ｄ，１d′：凸部、
２：継電器箱体、２ａ：上壁、Ｋ：係合部、２
ｅ，２ｆ：凹部、２ｇ，２ｈ：摺動ガイド面、３
ａ：貫通孔、３a′：摺動ガイド面、４：スプリン
グ、１０：引外しレバー、１４：共通端子台、１
６：スプリング支え、１７：可動接点、２０：ｂ
固定接点、２３：ａ固定接点。
Fig. 1 is a front view of a conventional thermal overcurrent relay with the cover partially cut away, showing a manual return type, Fig. 2 is a sectional view taken along line P-P', and Fig. 3 is the same as Fig. 1. Fig. 4 is a cross-sectional view taken along line Q-Q', and Fig. 5 is a partial perspective view of a thermal overcurrent relay showing another conventional embodiment. FIG. 6 is a front view of a manual return type showing an embodiment of the present invention, which corresponds to FIG. 1 of the conventional example.
7a and b are sectional views taken along the line X-X' in FIG. is a front view of the main part, Figure 9 is a front view when the return rod in Figure 6 is pushed in to create an automatic return type, and Figure 10 is its Y-
It is a Y′ cross-sectional view. 1: Return rod, B: Switching device part, 1b: Pressing projection, 1c, 1c': Engagement piece, 1d, 1d': Convex part,
2: Relay box body, 2a: Upper wall, K: Engagement part, 2
e, 2f: recess, 2g, 2h: sliding guide surface, 3
a: Through hole, 3a': Sliding guide surface, 4: Spring, 10: Tripping lever, 14: Common terminal block, 1
6: Spring support, 17: Movable contact, 20: b
Fixed contact, 23:a fixed contact.
Claims (1)
すようにした熱動形過電流継電器において、継
電器箱体の上壁に設けられた摺動ガイド面を有
する貫通孔と、この貫通孔の下部に設けられ摺
動ガイド面および少なくとも２個の凹部を有す
る係合部と、この係合部および前記貫通孔を挿
通して上方端部を継電器箱体外部に突出させ、
他方の下端部に接点の押圧用突起を有する復帰
桿と、この復帰桿を上方に付勢するスプリング
と前記復帰桿に、通常は摺動面より弾性的に突
出し、押圧力により摺動面内に後退可能な凸部
を設け、この凸部が復帰桿操作により前記係合
部と弾性的に係合して復帰桿に２位置をとらし
める切換装置部とから成ることを特徴とする熱
動形過電流継電器。 ２ 切換装置部が複数の溝切込みによる縦格子状
の係合片から成り、その各係合片に復帰桿の摺
動面より突出する凸部を設けたことを特徴とす
る実用新案登録請求の範囲第１項記載の熱動形
過電流継電器。 ３ 係合片が復帰桿の摺動方向と直角方向に弾力
性を有し、凸部を含めた各係合片の厚みが復帰
桿の厚みと同等以下の厚みから成ることを特徴
とする実用新案登録請求の範囲第２項記載の熱
動形過電流継電器。[Scope of Claim for Utility Model Registration] 1. A through-hole having a sliding guide surface provided on the upper wall of the relay box in a thermal overcurrent relay that promotes the return of the contacts by operating a return rod. an engaging part provided at the lower part of the through hole and having a sliding guide surface and at least two recesses; and an engaging part that is inserted through the engaging part and the through hole so that the upper end protrudes outside the relay box. ,
A return rod has a contact pressing protrusion on the other lower end, a spring that urges the return rod upward, and the return rod normally protrudes elastically from the sliding surface and is pushed into the sliding surface by the pressing force. The thermodynamic device is characterized in that it is provided with a retractable convex part, and this convex part elastically engages with the engaging part when the return pole is operated, and a switching device part that fixes the return pole in two positions. type overcurrent relay. 2. A request for registration of a utility model characterized in that the switching device part consists of vertical lattice-shaped engagement pieces with a plurality of groove cuts, and each engagement piece is provided with a convex part that protrudes from the sliding surface of the return rod. A thermal overcurrent relay according to scope 1. 3 Practical use characterized in that the engaging piece has elasticity in the direction perpendicular to the sliding direction of the return rod, and the thickness of each engaging piece including the convex portion is equal to or less than the thickness of the return rod. A thermal overcurrent relay according to claim 2 of the patent registration claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979102760U JPS633075Y2 (en) | 1979-07-23 | 1979-07-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979102760U JPS633075Y2 (en) | 1979-07-23 | 1979-07-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5620243U JPS5620243U (en) | 1981-02-23 |
| JPS633075Y2 true JPS633075Y2 (en) | 1988-01-26 |
Family
ID=29335472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979102760U Expired JPS633075Y2 (en) | 1979-07-23 | 1979-07-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS633075Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0591904U (en) * | 1992-05-12 | 1993-12-14 | 株式会社ニフコ | caster |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5484570U (en) * | 1977-11-29 | 1979-06-15 |
-
1979
- 1979-07-23 JP JP1979102760U patent/JPS633075Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5620243U (en) | 1981-02-23 |
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