JP2503680Y2 - Contact open / close mechanism of earth leakage breaker - Google Patents
Contact open / close mechanism of earth leakage breakerInfo
- Publication number
- JP2503680Y2 JP2503680Y2 JP12472590U JP12472590U JP2503680Y2 JP 2503680 Y2 JP2503680 Y2 JP 2503680Y2 JP 12472590 U JP12472590 U JP 12472590U JP 12472590 U JP12472590 U JP 12472590U JP 2503680 Y2 JP2503680 Y2 JP 2503680Y2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- pin
- connecting pin
- earth leakage
- leakage breaker
- 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 - Lifetime
Links
Landscapes
- Breakers (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は漏電遮断器における接点開閉機構に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a contact opening / closing mechanism in an earth leakage breaker.
第７図は漏電遮断器におけるOFF状態の接点開閉機構
の正面図である。図において接点は、可動接点3,この可
動接点３を固着したばね性を有するＵ字状可動接点台4,
この可動接点台４を装着した可動接触子5,前記可動接点
３に対向配置された固定接点17,この固定接点17を固着
した固定接点台18とよりなる。この接点を開閉する機構
は次に述べる部品により構成されている。すなわち、樹
脂製のケース15に取付ねじ16で取付けられたサイドプレ
ート1,このサイドプレート１に軸ピン14で取付けられ、
この軸ピン14を支点として回動するハンドル2,このハン
ドル２と押しバー７を連結し、その一方端がサイドプレ
ート１の溝19に収められたＵ字状の連結ピン6,トリップ
クロスバー軸12を中心として回動するトリップクロスバ
ー11,押しバー７の一端と係合する係合ピン10,爪軸ピン
９を中心として回動しトリップクロスバー11と係合する
爪８および可動接触子５とトリップクロスバー11に引掛
けられた開閉スプリング13よりなる。FIG. 7 is a front view of the contact opening / closing mechanism in the OFF state of the earth leakage breaker. In the figure, the contact points are a movable contact point 3, a U-shaped movable contact point base 4 having a spring property, to which the movable contact point 3 is fixed,
It is composed of a movable contactor 5 on which the movable contact base 4 is mounted, a fixed contact 17 arranged to face the movable contact 3, and a fixed contact base 18 to which the fixed contact 17 is fixed. The mechanism for opening and closing this contact is composed of the following parts. That is, the side plate 1, which is attached to the resin case 15 with the attaching screw 16, is attached to the side plate 1 with the shaft pin 14,
A handle 2 which rotates about the shaft pin 14 as a fulcrum, a U-shaped connecting pin 6 which connects the handle 2 and the push bar 7, and one end of which is housed in a groove 19 of the side plate 1, a trip crossbar shaft. A trip crossbar 11 which rotates about 12 as a center, an engagement pin 10 which engages with one end of the push bar 7, a claw 8 which rotates around a claw shaft pin 9 and engages with the trip crossbar 11, and a movable contactor. 5 and an opening / closing spring 13 hooked on the trip crossbar 11.
上記の接点開閉機構において、第８図のようにハンド
ル２を軸ピン14を支点としてＰ矢印方向に回動していく
と、連結ピン６の一方側脚部の先端はサイドプレート１
の溝19を下降しながら連結ピン６は回動し、押しバー７
の一方端は係合ピン10の上に乗り上がり、他方端側に力
が伝達されて押しバー7,可動接触子５は開閉スプリング
13を伸張させながら下降し、可動接点３は固定接点17に
接触する。この瞬間より接点3,17間に通電が始まる。こ
の状態よりさらにハンドル２が回動すると、第９図に示
すように、ばね性を有する可動接点台４は撓みを起こし
可動接点３と固定接点17間に接触圧力が生じる。この時
に連結ピン６は、第10図に示すように、ハンドル２側か
らと押しバー側から力を受けて撓みδ1が生じる。小電
流通電時の開閉においては接点3,17の消耗は少ないが、
通電流や短絡電流のような大電流通電時には接点3,17間
に適正な接触圧力が得られないと、ジュール熱により接
点が著しく消耗する。In the contact opening / closing mechanism described above, as shown in FIG. 8, when the handle 2 is rotated in the direction of the arrow P with the shaft pin 14 as a fulcrum, the tip of the one side leg of the connecting pin 6 is moved to the side plate 1.
The connecting pin 6 rotates while descending the groove 19 of the
One end rides on the engagement pin 10, and the force is transmitted to the other end side, and the push bar 7 and the movable contact 5 are opened / closed springs.
The movable contact 3 comes into contact with the fixed contact 17 while descending while extending 13. From this moment, energization starts between contacts 3 and 17. When the handle 2 is further rotated from this state, as shown in FIG. 9, the movable contact base 4 having a spring property is bent and a contact pressure is generated between the movable contact 3 and the fixed contact 17. At this time, as shown in FIG. 10, the connecting pin 6 receives a force from the handle 2 side and a force from the push bar side to generate a bending δ 1 . The contacts 3 and 17 are not worn down a lot during opening and closing when a small current is applied.
If a proper contact pressure cannot be obtained between the contacts 3 and 17 when a large current such as a conduction current or a short-circuit current is applied, the contacts are significantly worn due to Joule heat.
このような接点開閉機構では接点接触瞬時（第８図の
状態）から接点接触完了時（第９図の状態）に到るまで
の動作において、ハンドル２と押しバー７を連結してい
る連結ピン６の撓みが大きいので接触圧力の立ち上がり
が遅い。したがって過電流や短絡電流のような大電流通
電時には適正な接触圧力が得られないことがあり、この
場合可動接点3,固定接点17が著しく消耗する。このため
大電流通電時には可動接点3,固定接点17の異常消耗によ
り剥離や溶着が発生するという問題があった。In such a contact opening / closing mechanism, the connecting pin that connects the handle 2 and the push bar 7 in the operation from the moment of contact contact (state of FIG. 8) to the time of completion of contact contact (state of FIG. 9). Since the deflection of 6 is large, the contact pressure rises slowly. Therefore, proper contact pressure may not be obtained when a large current such as an overcurrent or a short-circuit current is applied, and in this case, the movable contact 3 and the fixed contact 17 are significantly worn out. Therefore, when a large current is applied, there is a problem that peeling or welding occurs due to abnormal wear of the movable contact 3 and the fixed contact 17.
この考案の目的は上述した問題点に鑑み、ハンドル操
作により接点接触瞬時より接点接触完了に到る動作過程
において連結ピンの撓みを小さくして両接点間の接触圧
力を安定させ接点の消耗を小さくした漏電遮断器の接点
開閉機構を提供することにある。In view of the above-mentioned problems, the object of the present invention is to reduce the deflection of the connecting pin in the operation process from the moment of contact contact to the completion of contact contact by the handle operation to stabilize the contact pressure between both contacts and reduce the wear of the contacts. Another object of the present invention is to provide a contact opening / closing mechanism for the earth leakage breaker.
この考案では、可動接点を固着したばね性を有する可
動接点台を装着した可動接触子と、この可動接触子に対
向して配置され、固定接点を固着した固定接点台を備え
た固定接触子とからなる漏電遮断器の接点を開閉する機
構であって、サイドプレートに軸ピンで取付けられ、こ
の軸ピンを支点として回動するハンドルと、このハンド
ルの回動により前記可動接触子を駆動する押しバーと、
Ｕ字状に形成され、Ｕ字脚部が前記ハンドルと押しバー
とにそれぞれ装着されてこれらを連結する連結ピンと、
この連結ピンのＵ字脚部に跨って嵌められたピン押え板
とを備えた。このピン押え板には連結ピンのＵ字脚部と
同一のピッチで２個の孔が穿孔され、この２個の孔にそ
れぞれ前記連結ピンのＵ字脚部が挿入される。さらにこ
の２個の孔は連結ピンのＵ字脚部のそれぞれにガタなく
納め得る内径とされる。In this invention, there are provided a movable contactor having a movable contact base having a spring property and fixed movable contacts, and a fixed contactor having a fixed contact base fixed to the movable contactor and fixed to the movable contactor. A mechanism for opening and closing the contacts of the earth leakage breaker, which is attached to the side plate with a shaft pin and rotates about the shaft pin as a fulcrum, and a pusher for driving the movable contactor by the rotation of the handle. Bar and
A connecting pin formed in a U shape, the U-shaped leg portions being attached to the handle and the push bar, respectively, for connecting these;
The pin holding plate fitted across the U-shaped leg of the connecting pin was provided. Two holes are punched in the pin pressing plate at the same pitch as the U-shaped leg portion of the connecting pin, and the U-shaped leg portion of the connecting pin is inserted into each of these two holes. Further, the two holes have an inner diameter that can be housed in each of the U-shaped leg portions of the connecting pin without play.
この考案の構成によれば接点接触瞬時から接点接触完
了までの動作過程において、連結ピンがハンドル，押し
バーからの力を受けても、連結ピンのＵ字脚部に跨って
ピン押え板が嵌められているので、前記力は先づピン押
え板で受け止められて可動接点台に加えられるので、連
結ピンが大きく撓むことはない。According to the configuration of the present invention, the pin pressing plate is fitted over the U-shaped leg portion of the connecting pin even if the connecting pin receives a force from the handle or the push bar in the operation process from the moment of contact to the completion of contact. Therefore, since the force is first received by the pin pressing plate and applied to the movable contact base, the connecting pin is not largely bent.
第１図はこの考案の一実施例である漏電遮断器におけ
るOFF状態の接点開閉機構の正面図、第２図は第１図の
左側面図で、第７図にて示した部品と同一の部品には同
一の符号を付し説明は省略する。この考案による実施例
が従来例と異なる点は連結ピン６のＵ字脚部に跨ってピ
ン押え板20を嵌め込んだ点である。これは第３図に示す
ように連結ピン６のＵ字脚部間ピッチと同一ピッチの２
個の孔を設けた金属製のピン押え板20を連結ピン６のＵ
字脚部の先端より嵌め込み、ピン押え板20がサイドプレ
ート１の外側に位置するように従来と同じ接点開閉機構
に組み込んだものである。この際ピン押え板20の孔は連
結ピン６のＵ字脚部がガタなく収められる孔径としてい
る。FIG. 1 is a front view of a contact opening / closing mechanism in an OFF state in an earth leakage breaker according to an embodiment of the present invention, and FIG. 2 is a left side view of FIG. 1, which is the same as the parts shown in FIG. The same reference numerals are given to the parts and the description thereof will be omitted. The embodiment according to the present invention is different from the prior art in that the pin pressing plate 20 is fitted over the U-shaped leg portion of the connecting pin 6. As shown in FIG. 3, this is the same pitch as the pitch between the U-shaped leg portions of the connecting pin 6.
Attach the metal pin retainer plate 20 with individual holes to the U of the connecting pin 6.
It is fitted in from the tip of the leg portion and is incorporated in the same contact opening / closing mechanism as the conventional one so that the pin pressing plate 20 is located outside the side plate 1. At this time, the hole of the pin pressing plate 20 has a diameter that allows the U-shaped leg portion of the connecting pin 6 to be housed without play.
第４図はハンドル２を軸ピン14を支点としてＰ矢印方
向に回動させ可動接点３が固定接点17に接触する瞬間の
状態を示すもので、第５図はハンドル２をさらに回動さ
せ可動接点３が固定接点17に接触完了した状態（ONの状
態）を示す正面図である。この時可動接触子５から伝達
された押しバー７からの力とハンドルからの力により若
干撓むが、第６図に示すようにピン押え板20が連結ピン
６を支えているので、連結ピンの撓みは小さくδ2とな
る。この撓みδ2は従来の撓みδ1と比較すると極めて小
さいので接点3,17の接触瞬間から接触完了まで安定した
接点接触圧力が得られる。FIG. 4 shows the state at the moment when the movable contact 3 comes into contact with the fixed contact 17 when the handle 2 is rotated in the direction of the arrow P with the shaft pin 14 as a fulcrum, and FIG. 5 is further rotated to move the handle 2. FIG. 6 is a front view showing a state (ON state) in which contact 3 has completed contact with fixed contact 17. At this time, although it is slightly bent by the force from the push bar 7 transmitted from the movable contact 5 and the force from the handle, the pin pressing plate 20 supports the connecting pin 6 as shown in FIG. Has a small deflection of δ 2 . Since this deflection δ 2 is extremely smaller than the conventional deflection δ 1 , a stable contact contact pressure can be obtained from the contact instant of the contacts 3 and 17 to the completion of contact.
この考案によれば連結ピンに跨ってピン押え板を嵌め
たことにより接点接触瞬時より接点接触完了に到る動作
過程において連結ピンがハンドルおよび押しバーから力
を受けても生じる撓みが小さく、接点間の接触圧力の立
ち上がりが早くしかも安定した接触圧力が得られる。こ
のため接点の異常消耗がなくなり剥離や溶着が発生しな
くなるという利点を有する。According to this invention, since the pin pressing plate is fitted over the connecting pin, the bending that occurs even if the connecting pin receives a force from the handle and the push bar in the operation process from the moment of contact contact to the completion of contact contact, The contact pressure rises quickly and a stable contact pressure can be obtained. Therefore, there is an advantage that abnormal wear of the contact is eliminated and peeling or welding does not occur.
第１図はこの考案の一実施例である漏電遮断器の接点開
閉機構がOFF状態のときの正面図、第２図は第１図の左
側面図、第３図は第１図および第２図における連結ピン
にピン押え板を嵌め込んだ状態の詳細図、第４図は同上
接点開閉機構における接点接触瞬時を示す正面図、第５
図は同上接点開閉機構における接点接触完了時を示す正
面図、第６図はピン押え板が嵌められた連結ピンの撓み
を示す詳細図、第７図は従来の漏電遮断器の接点開閉機
構がOFF状態のときの正面図、第８図は同上接点開閉機
構における接点接触瞬時を示す正面図、第９図は同上接
点開閉機構における接点接触完了時を示す正面図、第10
図は第７図ないし第９図における連結ピンの撓みを示す
詳細図である。 1:サイドプレート、2:ハンドル、3:可動接点、4:可動接
点台、5:可動接触子、6:連結ピン、7:押しバー、14:軸
ピン、17:固定接点、18:固定接点台、20:ピン押え板。FIG. 1 is a front view when the contact opening / closing mechanism of an earth leakage breaker according to an embodiment of the present invention is in an OFF state, FIG. 2 is a left side view of FIG. 1, and FIG. 3 is FIG. 1 and FIG. FIG. 4 is a detailed view showing a state where a pin pressing plate is fitted into the connecting pin in the figure, FIG.
FIG. 6 is a front view of the contact opening / closing mechanism at the time of contact completion, FIG. 6 is a detailed view showing bending of a connecting pin fitted with a pin pressing plate, and FIG. 7 is a contact opening / closing mechanism of a conventional earth leakage breaker. Fig. 8 is a front view in the OFF state, Fig. 8 is a front view showing a contact contact moment in the same contact opening / closing mechanism, and Fig. 9 is a front view showing the completion of contact contact in the same contact opening / closing mechanism.
The drawing is a detailed view showing the bending of the connecting pin in FIGS. 7 to 9. 1: Side plate, 2: Handle, 3: Moving contact, 4: Moving contact stand, 5: Moving contact, 6: Connecting pin, 7: Push bar, 14: Axis pin, 17: Fixed contact, 18: Fixed contact Table, 20: pin retainer plate.
Claims (3)
点台を装着した可動接触子と、この可動接触子に対向し
て配置され、固定接点を固着した固定接点台を備えた固
定接触子とからなる漏電遮断器の接点を開閉する機構で
あって、サイドプレートに軸ピンで取付けられ、この軸
ピンを支点として回動するハンドルと、このハンドルの
回動により前記可動接触子を駆動する押しバーと、Ｕ字
状に形成され、Ｕ字脚部が前記ハンドルと押しバーとに
それぞれ装着されてこれらを連結する連結ピンと、この
連結ピンのＵ字脚部に跨って嵌められたピン押え板とを
備えたことを特徴とする漏電遮断器の接点開閉機構。1. A fixed contact provided with a movable contact having a movable contact fixed to a movable contact and having a spring property, and a fixed contact provided with the fixed contact fixed to the movable contact. Is a mechanism for opening and closing the contacts of the earth leakage breaker, which is attached to the side plate with a shaft pin and rotates about the shaft pin as a fulcrum, and the movable contact is driven by the rotation of the handle. A push bar, a U-shaped connecting pin having U-shaped leg portions attached to the handle and the push bar to connect them, and a pin retainer fitted across the U-shaped leg portion of the connecting pin. A contact opening / closing mechanism for an earth leakage breaker, which is provided with a plate.
には連結ピンのＵ字脚部と同一のピッチで２個の孔が穿
孔され、この２個の孔にそれぞれ前記連結ピンのＵ字脚
部が挿入されていることを特徴とする漏電遮断器の接点
開閉機構。2. The pin pressing plate according to claim 1, wherein two holes are bored at the same pitch as the U-shaped leg portion of the connecting pin, and the U holes of the connecting pin are respectively formed in these two holes. A contact opening / closing mechanism for an earth leakage breaker, in which a leg portion is inserted.
連結ピンのＵ字脚部のそれぞれにガタなく嵌まり得る孔
径としたことを特徴とする漏電遮断器の接点開閉機構。3. A contact opening / closing mechanism for an earth leakage breaker according to claim 2, wherein the two holes have a diameter such that they can be fitted in the U-shaped legs of the connecting pin without play.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12472590U JP2503680Y2 (en) | 1990-11-27 | 1990-11-27 | Contact open / close mechanism of earth leakage breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12472590U JP2503680Y2 (en) | 1990-11-27 | 1990-11-27 | Contact open / close mechanism of earth leakage breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0481340U JPH0481340U (en) | 1992-07-15 |
| JP2503680Y2 true JP2503680Y2 (en) | 1996-07-03 |
Family
ID=31872361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12472590U Expired - Lifetime JP2503680Y2 (en) | 1990-11-27 | 1990-11-27 | Contact open / close mechanism of earth leakage breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503680Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014199756A (en) * | 2013-03-29 | 2014-10-23 | パナソニック株式会社 | Contact apparatus and circuit breaker |
-
1990
- 1990-11-27 JP JP12472590U patent/JP2503680Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0481340U (en) | 1992-07-15 |
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