JPS6339880Y2 - - Google Patents
Info
- Publication number
- JPS6339880Y2 JPS6339880Y2 JP8166184U JP8166184U JPS6339880Y2 JP S6339880 Y2 JPS6339880 Y2 JP S6339880Y2 JP 8166184 U JP8166184 U JP 8166184U JP 8166184 U JP8166184 U JP 8166184U JP S6339880 Y2 JPS6339880 Y2 JP S6339880Y2
- Authority
- JP
- Japan
- Prior art keywords
- release lever
- shifter
- movable plate
- tension spring
- bimetal
- 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
- 229920005992 thermoplastic resin Polymers 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000000088 plastic resin Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Breakers (AREA)
Description
【考案の詳細な説明】
〔考案の属する技術分野〕
この考案は熱形過負荷継電器において特に反転
機構の構成に関する。[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates particularly to the configuration of a reversing mechanism in a thermal overload relay.
この種の従来装置には第４図および第５図に示
すものが知られている。図において一部しか図示
されていないがこの熱形過負荷継電器は自動、手
動復帰共用形であり、絶縁ケース１内には図示さ
れていない右側に電路に挿入される三相分の加熱
体が巻回されたバイメタルと、このバイメタルの
自由端のそれぞれに係合されケースの案内溝１ａ
にバイメタルの湾曲によりＰ矢方向移動可能に支
承されたシフタ２と、シフタ２の一端に係合可能
にケース１内に配置された開閉機構３と、開閉機
構３により接離操作される接点装置４と、接点装
置４が自動復帰の場合には固定され手動復帰形の
場合には操作自在となる復帰装置５とが主な構成
要素として収納されている。開閉機構３はケース
１の内壁に軸支されシフタ２の先端が係合する温
度補償用バイメタル６と、後述する反転機構７に
係合する樹脂成形による押し片８が加熱変形によ
るかしめなどで一体化された釈放レバー９と、釈
放レバー９を一端１０ａで揺動自在に支承すると
ともに、支点Ｗを中心に回動可能な調整リンク１
０と、調整リンク１０の他端１０ｂが係合する調
整ダイヤル１１のカム部１１ａと、調整リンク１
０の他端１０ｂをカム部１１ａに押圧するばね１
２とを備えている。反転機構７は端子１３が備え
るＶ字状溝１３ａに一端が揺動自在に支承され他
端の両面に接点装置４の常開側可動接点１４およ
び絶縁体１５が一体化された可動板１６、可動板
１６と端子１３の鋸刃状溝１３ｂとの間に張架さ
れその作用線が可動板１６を支えるＶ字状溝１３
ａのＺ点を越えると可動板１６を反転動作させる
接点開閉用の引張りばね１７とを備えている。接
点装置４はその構成部材の一部が前述の反転機構
７を兼ね、それは常開側可動接点１４および常閉
側可動接点１８を駆動する絶縁体１５が取付けら
れた可動板１６や、端子１３などの部材と、常開
側可動接点１４と接離可能となる端子１９により
ケース１に固定された常開側固定接点２０と、可
動板１６の動作で駆動され端子２１によりケース
に固定された前述の常閉側可動接点１８と、常閉
側可動接点１８と接離可能となる端子２２により
ケース１に固定された常閉側固定接点２３とを備
えている。なお釈放レバー９と調整リンク１０と
は第５図に詳細に示すように支点Ｘでピン２４を
介して連結されている。また図の接点装置４は手
動復帰形にセツトした状態が示され、自動復帰形
の場合には復帰装置５の復帰棒２５を鎖線で示す
位置まで押して常開側固定接点２１を前倒させて
おく必要がある。
As a conventional device of this type, those shown in FIGS. 4 and 5 are known. Although only a portion is shown in the figure, this thermal type overload relay is of the automatic and manual reset type, and inside the insulating case 1 there is a heating element for three phases inserted into the electrical circuit on the right side (not shown). The wound bimetal and the guide groove 1a of the case are engaged with each of the free ends of the bimetal.
A shifter 2 supported movably in the direction of the arrow P by a bimetal curvature, an opening/closing mechanism 3 disposed within the case 1 so as to be able to engage with one end of the shifter 2, and a contact device operated to engage and separate by the opening/closing mechanism 3. 4, and a return device 5 which is fixed when the contact device 4 is an automatic return type and is operable when it is a manual return type, are housed as main components. The opening/closing mechanism 3 is made up of a temperature compensating bimetal 6 that is pivotally supported on the inner wall of the case 1 and engages with the tip of the shifter 2, and a push piece 8 made of resin molding that engages with a reversing mechanism 7, which will be described later, and are integrated by caulking by heat deformation or the like. an adjustment link 1 that swingably supports the release lever 9 at one end 10a and is rotatable about a fulcrum W.
0, the cam portion 11a of the adjustment dial 11 with which the other end 10b of the adjustment link 10 engages, and the adjustment link 1
Spring 1 that presses the other end 10b of 0 against the cam portion 11a
2. The reversing mechanism 7 includes a movable plate 16, one end of which is swingably supported in a V-shaped groove 13a provided in the terminal 13, and a normally open side movable contact 14 of the contact device 4 and an insulator 15 integrated on both sides of the other end; A V-shaped groove 13 is stretched between the movable plate 16 and the sawtooth groove 13b of the terminal 13, and its line of action supports the movable plate 16.
It is provided with a tension spring 17 for opening and closing the contact, which reverses the movable plate 16 when the Z point a is exceeded. Some of the constituent members of the contact device 4 also serve as the above-mentioned reversing mechanism 7, which includes a movable plate 16 to which an insulator 15 for driving the normally open movable contact 14 and the normally closed movable contact 18 is attached, and the terminal 13. a normally open side fixed contact 20 fixed to the case 1 by means of a terminal 19 that can be brought into contact with and separated from the normally open side movable contact 14; It includes the above-mentioned normally closed side movable contact 18 and a normally closed side fixed contact 23 fixed to the case 1 by a terminal 22 that can be brought into contact with and separated from the normally closed side movable contact 18. The release lever 9 and the adjustment link 10 are connected at a fulcrum X via a pin 24, as shown in detail in FIG. The contact device 4 in the figure is shown set to the manual return type; in the case of the automatic return type, the normally open side fixed contact 21 is moved forward by pushing the return rod 25 of the return device 5 to the position shown by the chain line. It is necessary to keep it.
このような従来装置の反転機構７は釈放レバー
９と調整リンク１０との結合にピン２４を用いて
いることから振動等によるピンの抜け止めが必要
となるために部品点数が多くなり組立の時間が長
くなつたり、また引張りばね１７は可動板１６と
端子１３とを電気的に接続する形になつており充
電部であることから釈放レバー９の引張りばね１
７との当接個所には絶縁物による押し片８が必要
となり部品点数が多くなるとともに、これにとも
なう組立時間が増すなどの欠点があつた。 Since the reversing mechanism 7 of such a conventional device uses a pin 24 to connect the release lever 9 and the adjustment link 10, it is necessary to prevent the pin from coming off due to vibrations, etc., which increases the number of parts and increases the assembly time. The tension spring 17 of the release lever 9 becomes longer and the tension spring 17 of the release lever 9 becomes longer.
The pushing piece 8 made of an insulating material is required at the point of contact with the holder 7, which increases the number of parts and has disadvantages such as an increase in assembly time.
この考案は上述した従来の欠点を除去し、性能
と信頼性を低下させることなく作業性が向上され
組立時間を短縮することができ安価な熱形過負荷
継電器を提供することを目的とする。
The object of this invention is to eliminate the above-mentioned conventional drawbacks, and to provide an inexpensive thermal overload relay that can improve workability and shorten assembly time without degrading performance and reliability.
この考案の要点は継電器に流れる過電流に基づ
くバイメタルの変位を伝えるシフタと、一端が前
記シフタに係合しバイメタルの変位によりシフタ
を介して回動される釈放レバーと、該釈放レバー
と連結する調整リンクに係合して釈放レバーの初
期回動角度を所定の設定値に保持する調整ダイヤ
ルと、前記釈放レバーの他端が係合する引張りば
ねに連結され釈放レバーの回動にともなう引張り
ばねの作用線が死点を越えると反転する可動板
と、該可動板の反転により接離する接点を有する
接点装置とを備えたものにおいて、前記釈放レバ
ーを熱可塑性樹脂により成形し、釈放レバーを熱
可塑性樹脂の弾性に基づいて前記調整リンクに嵌
込みにより結合した点にあり、部品点数ならびに
組立時間の削減を図るものである。
The key points of this invention are: a shifter that transmits the displacement of a bimetal based on an overcurrent flowing through the relay; a release lever that engages with the shifter at one end and is rotated via the shifter due to the displacement of the bimetal; and a release lever that is connected to the shifter. an adjustment dial that engages with the adjustment link to maintain the initial rotation angle of the release lever at a predetermined setting value; and a tension spring that is connected to a tension spring that is engaged with the other end of the release lever and that is connected to the tension spring as the release lever rotates. A movable plate that reverses when the line of action of the movable plate exceeds the dead center, and a contact device having contacts that come into contact and separate when the movable plate reverses, wherein the release lever is molded from thermoplastic resin, and the release lever is It is connected to the adjustment link by fitting based on the elasticity of the thermoplastic resin, thereby reducing the number of parts and assembly time.
第１図ないし第３図はこの考案による熱形過負
荷継電器の一実施例を示し、第１図は動作前の要
部背面図、第２図は要部拡大図、第３図は要部分
解拡大図であり、図において前記第４図に示す従
来装置と同一部には同一符号を付すことで説明の
重複を避け異なるところを説明する。この実施例
において従来装置と相違する点は、まず第４図に
示す従来装置における押し片８、釈放レバー９お
よびピン２４を熱可塑性樹脂の型成形により一体
化し釈放レバー３０として形成した点である。釈
放レバー３０は温度補償用バイメタル６の取付座
を備えたレバー部３１と、レバー部３１の一端に
背合に逆Ｕ字状に形成されて弾性を備えるととも
に外側に同軸上のピン３２を有するヒンジ部３３
と、レバー部３１の他端に引張りばね１７側に向
けて突出する突起を設けた押し片３４とで構成さ
れている。そしてピン３２はヒンジ部３３を内側
に撓ませることで、調整リンク１０の一端１０ａ
のピン孔に揺動自在に嵌合するようになつてい
る。したがつて従来装置に比較して第４図におけ
る釈放レバー９に押し片８を加熱変形によりかし
める作業がなくなり、また釈放レバー９と調整リ
ンク１０との結合はワンタツチで行なうことがで
きる。
Figures 1 to 3 show an embodiment of the thermal overload relay according to this invention. Figure 1 is a rear view of the main part before operation, Figure 2 is an enlarged view of the main part, and Figure 3 is the main part. This is an enlarged view of the solution, and in the drawing, the same parts as those of the conventional device shown in FIG. This embodiment differs from the conventional device in that the push piece 8, release lever 9, and pin 24 in the conventional device shown in FIG. 4 are integrated into a release lever 30 by molding thermoplastic resin. . The release lever 30 has a lever part 31 equipped with a mounting seat for the temperature compensating bimetal 6, and an inverted U-shape formed at one end of the lever part 31 to provide elasticity and a coaxial pin 32 on the outside. Hinge part 33
and a push piece 34 provided with a protrusion protruding toward the tension spring 17 at the other end of the lever portion 31. Then, the pin 32 bends the hinge portion 33 inward, so that the one end 10a of the adjustment link 10
It is designed to swingably fit into the pin hole of. Therefore, compared to the conventional device, there is no need to swage the push piece 8 onto the release lever 9 in FIG. 4 by heat deformation, and the release lever 9 and the adjustment link 10 can be connected with one touch.
なお、ピン３２の代わりに孔を設け調整リンク
１０の一端に突起を設けてもよい。 Note that instead of the pin 32, a hole may be provided and a protrusion may be provided at one end of the adjustment link 10.
この考案によれば、釈放レバーを熱可塑性樹脂
により成形し、この釈放レバーを熱可塑性樹脂の
弾性に基づいて調整レバーに嵌込みにより結合す
るように構成したことにより、性能と信頼性とを
低下させることなく部品点数を削減しかつ作業性
が良く組立時間を短縮することのできる熱形過負
荷継電器を提供することができる。
According to this invention, the release lever is molded from thermoplastic resin, and the release lever is fitted and connected to the adjustment lever based on the elasticity of the thermoplastic resin, which reduces performance and reliability. Therefore, it is possible to provide a thermal overload relay that can reduce the number of parts without causing damage, has good workability, and can shorten assembly time.
第１図ないし第３図はこの考案による熱形過負
荷継電器の接点装置の一実施例を示す図で、第１
図は動作前の背面図、第２図は第１図の要部拡大
斜視図、第３図は第２図の要部分解斜視図、第４
図および第５図は従来の熱形過負荷継電器の接点
装置の一例を示す図で、第４図は動作前の背面
図、第５図は第１図の要部拡大斜視図である。
２……シフタ、１０……調整リンク、１１……
調整ダイヤル、１３……第１の端子、１４……常
開側可動接点、１６……可動板、１７……引張り
ばね、１８……常閉側可動接点、１９，２１，２
２……端子、２０……常開側固定接点、２３……
常閉側固定接点、３０……釈放レバー。
Figures 1 to 3 are diagrams showing one embodiment of a contact device of a thermal overload relay according to this invention.
The figure is a rear view before operation, Figure 2 is an enlarged perspective view of the main part of Figure 1, Figure 3 is an exploded perspective view of the main part of Figure 2, and Figure 4 is an exploded perspective view of the main part of Figure 2.
5 and 5 are diagrams showing an example of a contact device of a conventional thermal overload relay. FIG. 4 is a rear view before operation, and FIG. 5 is an enlarged perspective view of the main part of FIG. 1. 2...Shifter, 10...Adjustment link, 11...
Adjustment dial, 13... First terminal, 14... Normally open side movable contact, 16... Movable plate, 17... Tension spring, 18... Normally closed side movable contact, 19, 21, 2
2...Terminal, 20...Normally open side fixed contact, 23...
Normally closed side fixed contact, 30...Release lever.
Claims (1)
位を伝えるシフタと、一端が前記シフタに係合し
バイメタルの変位によりシフタを介して回動され
る釈放レバーと、該釈放レバーと連結する調整リ
ンクに係合して釈放レバーの初期回動角度を所定
の設定値に保持する調整ダイヤルと、前記釈放レ
バーの他端が係合する引張りばねに連結され釈放
レバーの回動にともなう引張りばねの作用線が死
点を越えると反転する可動板と、該可動板の反転
により接離する接点を有する接点装置とを備えた
熱形過負荷継電器において、前記釈放レバーを熱
可塑性樹脂により成形し、釈放レバーを熱可塑性
樹脂の弾性に基づいて前記調整リンクに嵌込みに
より結合したことを特徴とする熱形過負荷継電器
の反転機構。 A shifter that transmits the displacement of the bimetal based on the overcurrent flowing in the relay, a release lever whose one end engages with the shifter and is rotated via the shifter due to the displacement of the bimetal, and an adjustment link that is connected to the release lever. The adjustment dial maintains the initial rotation angle of the release lever at a predetermined setting value, and the other end of the release lever is connected to a tension spring that engages, so that the line of action of the tension spring as the release lever rotates is fixed. In a thermal overload relay equipped with a movable plate that reverses when a point is exceeded, and a contact device having contacts that connect and separate when the movable plate reverses, the release lever is molded from thermoplastic resin, and the release lever is heated. A reversing mechanism for a thermal overload relay, characterized in that the reversing mechanism is connected to the adjustment link by fitting based on the elasticity of a plastic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8166184U JPS60193648U (en) | 1984-06-01 | 1984-06-01 | Reversing mechanism of thermal overload relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8166184U JPS60193648U (en) | 1984-06-01 | 1984-06-01 | Reversing mechanism of thermal overload relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60193648U JPS60193648U (en) | 1985-12-23 |
| JPS6339880Y2 true JPS6339880Y2 (en) | 1988-10-19 |
Family
ID=30628648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8166184U Granted JPS60193648U (en) | 1984-06-01 | 1984-06-01 | Reversing mechanism of thermal overload relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60193648U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009037978A (en) * | 2007-08-03 | 2009-02-19 | Fuji Electric Assets Management Co Ltd | Thermally actuated overload relay |
-
1984
- 1984-06-01 JP JP8166184U patent/JPS60193648U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60193648U (en) | 1985-12-23 |
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