JPS62100913A - Contact switch - Google Patents

Contact switch

Info

Publication number
JPS62100913A
JPS62100913A JP24001285A JP24001285A JPS62100913A JP S62100913 A JPS62100913 A JP S62100913A JP 24001285 A JP24001285 A JP 24001285A JP 24001285 A JP24001285 A JP 24001285A JP S62100913 A JPS62100913 A JP S62100913A
Authority
JP
Japan
Prior art keywords
contact
movable contact
movable
fixed
rigid
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
Application number
JP24001285A
Other languages
Japanese (ja)
Inventor
堀内　憲一郎
昭彦 平尾
馨 白倉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP24001285A priority Critical patent/JPS62100913A/en
Publication of JPS62100913A publication Critical patent/JPS62100913A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Contacts (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔技術分野〕 この発明は、コンタクタ等に適用される２点切り接点を
有する接点開閉装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a contact opening/closing device having a two-break contact applied to a contactor or the like.

〔背景技術〕[Background technology]

第４図および第５図に従来例を示す。すなわち、第４図
（ａｌは、駆動手段の可動枠５０の窓に可動接触子５１
を通し、ばね５２で押えるとともに、可動接触子５１の
両端に可動接点５３を設け、可動接点５３に対向して固
定接点５４を設けたものである。第５図はこの接点開閉
装置を適用したコンタクタで、５５はケース、５６は電
磁石、５７は可動鉄心５８に連動する連動レバー、５９
は可動枠５０および可動鉄心５８を復帰付勢する復す１
１ばね、６０は接点端子、６１はコイル端子である。Conventional examples are shown in FIGS. 4 and 5. That is, as shown in FIG.
A movable contact 53 is provided at both ends of the movable contact 51, and a fixed contact 54 is provided opposite the movable contact 53. FIG. 5 shows a contactor to which this contact opening/closing device is applied, 55 is a case, 56 is an electromagnet, 57 is an interlocking lever that is interlocked with a movable iron core 58, and 59
1 which urges the movable frame 50 and the movable core 58 to return.
1 spring, 60 a contact terminal, and 61 a coil terminal.

しかしながら、この接点開閉１ａＺは、可動接点５３お
よび固定接点５４間に接点投入時のバウンスアークが発
生し、接点溶着により、接点寿命が短くなるという欠点
があった。However, this contact opening/closing method 1aZ has the disadvantage that a bounce arc occurs between the movable contact 53 and the fixed contact 54 when the contact is closed, and the contact welding shortens the contact life.

第４図（ｂｌは可動接点５３の一方すなわち可動接点５
３′およびこれに対向する固定接点５４′を耐アーク性
を有する接点材料たとえばＡｇ−系の合金で形成し他の
可動接点５３および固定接点５４は接触安定性の高いへ
ｇ含有量の多い合金で形成するとともに、可動接点５３
′が可動接点５３より後から投入されかつ先切れされる
ようにしたものである。この接点開閉装置は、耐アーク
性の接点材ギ４のため接点溶着は防止できるが、耐アー
ク性の接点材料は接触安定性が悪いため、オン時の固定
接点５４．５４’間の接触抵抗が高くなるという欠点が
ある。なお可動接点５３側でも、たとえば６０　Ｈｚの
交流負荷の場合、可動接点５３′側がＯ位相近傍で開離
したとき可動接点５３側では約７　ｍｍ秒以」二の開離
時間遅れがなければ、アークが発生するが、このような
遅れをもたずことは困難である。FIG. 4 (bl is one of the movable contacts 53, that is, the movable contact 5
3' and the stationary contact 54' opposite thereto are made of an arc-resistant contact material, such as an Ag-based alloy, and the other movable contact 53 and fixed contact 54 are made of an alloy with high contact stability and high g content. The movable contact 53
' is made to be turned on after the movable contact 53 and turned off first. This contact switching device can prevent contact welding due to the arc-resistant contact material 4, but since the arc-resistant contact material has poor contact stability, the contact resistance between the fixed contacts 54 and 54' when on is The disadvantage is that it is expensive. On the movable contact 53 side, for example, in the case of an AC load of 60 Hz, when the movable contact 53' side opens in the vicinity of the O phase, if there is no opening time delay of about 7 mm seconds or more on the movable contact 53 side, An arc occurs, but it is difficult to have such a delay.

第４図ｆｃ）は同図（ａｌに対して、可動接点５３″お
よび固定接点５４′の形状を大きくしたものである。こ
の接点開閉装置は、製造上のばらつきにより初期状態で
投入、しゃ断の時間差があった時に開閉の進行に伴って
片方の異常消耗が加速されるという問題に対して有効で
ある。つまり両方の接点にアークが発生ずるが、予めア
ークの発生の多くなる側を設定しておきその接点を消耗
増加を想定して大きくしたものである。したがって、第
３図ｉｂｌのものと比較して接触安定性が良い。しかし
、耐溶着性が劣る。また特にコンデンサ負荷により投入
時の突入電流が流れる場合、瞬時に電流密度の高い短ギ
ャップアークが発生ずるため単に形状を大きくして熱容
量を大きくしても効果は少ない。Fig. 4 fc) shows a larger shape of the movable contact 53'' and the fixed contact 54' compared to Fig. This is effective for solving the problem of abnormal wear on one side accelerating as opening and closing progress when there is a time difference.In other words, arcs occur at both contacts, but it is necessary to set in advance the side where more arcing occurs. The contact point is made larger in anticipation of increased wear and tear. Therefore, the contact stability is better than that shown in Fig. 3. When an inrush current flows, a short gap arc with high current density is instantaneously generated, so simply increasing the heat capacity by enlarging the shape has little effect.

〔発明の目的〕[Purpose of the invention]

この発明の目的は、突入電流等によるアークに対して耐
溶着性が良くしかも接触安定性の優れた接点開閉装置を
提供することである。An object of the present invention is to provide a contact opening/closing device that has good resistance to welding against arcs caused by rush currents and the like and has excellent contact stability.

〔発明の開示〕[Disclosure of the invention]

この発明は、一対の固定接点と、これらの固定接点に接
離する一対の可動接点と、これらの可動接点のうちの一
方を先端部に設けた剛性を有する剛性可動接触子と、前
記可動接点の他方を先端部に設けて法端部が前記剛性可
動接触子の基端部に連結されたばね性を有するばね性可
動接触子と、前記剛性可動接触子および前記ばね性可動
接触子の少なくとも一方の基端部を押圧して前記ばね性
ｒｉ１動接触子の可動接点を前記剛性可動接触子の可動
接点よりも先に１）；Ｉ記固定接点に投入させるととも
に＋ｎ前記剛性可動接触子の可動接点が固定接点に接触
した状態で前記剛性可動接触子が前記固定接点を支点に
回動するように駆動する駆動手段とを備えたものである
。The present invention includes a pair of fixed contacts, a pair of movable contacts that come into contact with and separate from these fixed contacts, a rigid movable contact having rigidity in which one of the movable contacts is provided at a tip, and the movable contacts. a spring movable contact having a spring property, the other of which is provided at the distal end and whose legal end is connected to the proximal end of the rigid movable contact; and at least one of the rigid movable contact and the spring movable contact. Press the base end of the spring ri1 movable contact to insert it into the fixed contact 1) before the movable contact of the rigid movable contact, and +n move the rigid movable contact and driving means for driving the rigid movable contact to rotate about the fixed contact while the contact is in contact with the fixed contact.

この発明によれば、剛性可動接触子の可ｖＪ接点が後か
ら投入されるとともに先切れとなるため、剛性可動接触
子の可動接点およびその固定接点の間にアークが発生す
るが、剛性可＋Ｊｓ接触子は投入後に固定接点を支点に
回動するためその回転モーメン［・によりン容着を解Ｆ
ｌｌｌすること力くでき、このため耐溶着性を有する。According to this invention, since the movable vJ contact of the rigid movable contact is turned on later and is cut first, an arc is generated between the movable contact of the rigid movable contact and its fixed contact. After the contact is turned on, it rotates around the fixed contact, so its rotational moment [・F
It can be easily ground and therefore has resistance to welding.

また各接点は耐溶着ｔ！■Ａ糧を使用しなくてもよくな
るため、）妾触安定性が向にする。しかも４１４造が複
雑化しない。In addition, each contact is resistant to welding! ■Since there is no need to use A food, the stability of concubine is improved. Moreover, the 414-frame structure does not become complicated.

実施例 この発明の一実施例を第１図ないし第３図に基づいて説
明する。すなわち、この接点開閉装置は、一対の固定接
点１．２と、これらの固定接点１゜２に接離する一対の
可動接点３，４と、これらの可動接点３．４のうちの一
方を先端部に設けた剛性を有する剛性可動接触子５と、
前記可動接点３゜４の他方を先端部に設けて基端部６が
前記剛性可動接触子５の基端部７に連結されたばね性を
有するばね性可動接触子８と、前記剛性可動接触子５お
よびｎ１１記ばね性可動接触子８の少なくとも一方の基
端部６．７を押圧して前記ばね性可動接触子８の可動接
点４を前記剛性可動接触子５の可’ｋＪ＋接点３よりも
先に前記固定接点２に投入させるとともに前記剛性可動
接触子５の可動接点３が固定接点１に接触した状態で前
記剛性可動接触子５が前記固定接点１を支点に回動する
ように駆動する駆＋Ｊ＋手段９とを備えている。Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 3. That is, this contact opening/closing device includes a pair of fixed contacts 1.2, a pair of movable contacts 3, 4 that contact and separate from these fixed contacts 1.2, and one of these movable contacts 3.4 at the tip. a rigid movable contact 5 having rigidity provided at the portion;
a spring movable contact 8 having a spring property in which the other of the movable contacts 3.4 is provided at the distal end and a base end 6 is connected to the base end 7 of the rigid movable contact 5; and the rigid movable contact. 5 and n11 Press the base end portion 6.7 of at least one of the spring movable contacts 8 to make the movable contact 4 of the spring movable contact 8 more than the movable contact 3 of the rigid movable contact 5. First, the fixed contact 2 is turned on, and with the movable contact 3 of the rigid movable contact 5 in contact with the fixed contact 1, the rigid movable contact 5 is driven to rotate about the fixed contact 1 as a fulcrum. It is equipped with Kaku + J + Means 9.

前記固定接点１，２はそれぞれ端子即用の固定接触子１
．０．１１の先端にビン部１２によりかしめ固着されて
いる。The fixed contacts 1 and 2 are fixed contacts 1 for immediate use as terminals, respectively.
．． It is caulked and fixed to the tip of the 0.11 mm by means of a bottle part 12.

前記可動接点３，４はｌ−】−リング動作が可能になる
ように、周縁部が曲面に形成されている。また前記固定
接点１，２および可動接点３．４は接触安定性の高いへ
ｇ含有量の多いＡｇ合金で形成されている。The movable contacts 3 and 4 have curved peripheral edges so as to be capable of l-]-ring operation. Further, the fixed contacts 1, 2 and the movable contacts 3, 4 are made of an Ag alloy with high contact stability and high heg content.

前記剛性可動接触子５は先端部に可動接点３をピン部Ｉ
４によりかしめ固着し、基端部６に位置決め用切欠１３
を形成している。The rigid movable contact 5 has the movable contact 3 at the tip portion of the pin portion I.
4, and a positioning notch 13 is attached to the proximal end 6.
is formed.

前記ばね性可動接触子８は仮ばねを実施例とし、先端部
に可動接点４をピン部１４によりかしめ固着し、基端部
７は折返し部１５を折曲してその端部をピン部１Ｇによ
り剛性可動接触子５の基端部６にかしめ固着している。The spring movable contact 8 is a temporary spring, and the movable contact 4 is caulked and fixed to the tip part by a pin part 14, and the proximal end part 7 is formed by bending the folded part 15 and attaching the end part to the pin part 1G. It is caulked and fixed to the base end 6 of the rigid movable contact 5.

このばね性可動接触子８の可動接点４と剛性可動接触子
５の可動接点３とは可動接点４側が固定接点２により近
くに位置するように設定される。The movable contact 4 of the spring movable contact 8 and the movable contact 3 of the rigid movable contact 5 are set so that the movable contact 4 side is located closer to the fixed contact 2.

前記駆動手段９は図示しないが第５図と同等のＮ　６１
を石を実施例とし、その可動枠１７に凹部１８を形成し
、可動枠１７の移動方向の両側に突起部２０．２１を形
成するとともに凹部１８の底部に位置決め用切欠１３に
係合する突部１９を形成している。剛性可動接触子５の
位置決め用切欠１３が突部１９に係合されて剛性可動接
触子５およびばね性可動接触子６が可動枠１７の凹部】
８に係合し、剛性可動接触子５の基端部６およびばね性
可動接触子８の折返し部１５が突起部２０．２１に支持
される。Although the driving means 9 is not shown, it is an N61 similar to that shown in FIG.
A stone is used as an example, and a recess 18 is formed in the movable frame 17, protrusions 20 and 21 are formed on both sides of the movable frame 17 in the moving direction, and a protrusion that engages with the positioning notch 13 is provided at the bottom of the recess 18. 19 is formed. The positioning notch 13 of the rigid movable contact 5 is engaged with the protrusion 19, and the rigid movable contact 5 and the spring movable contact 6 are moved into the recess of the movable frame 17]
8, and the proximal end 6 of the rigid movable contact 5 and the folded part 15 of the spring movable contact 8 are supported by the protrusion 20.21.

この接点開閉装置の動作について、説明する。The operation of this contact switching device will be explained.

すなわち、第１図（ａ）ば接点開離の状態である。第１
図（ｂ）は可動枠１７が矢印方向Ａに移動して、固定接
点２に対する可動接点４が固定接点Ｉに対する可動接点
３よりも近いため、先にばね性可動接触子８の可動枠、
へ４が固定接点２に接触した状態である。That is, FIG. 1(a) shows a state in which the contacts are open. 1st
In Figure (b), the movable frame 17 moves in the direction of the arrow A, and since the movable contact 4 is closer to the fixed contact 2 than the movable contact 3 is to the fixed contact I, the movable frame 17 of the spring movable contact 8 moves first.
4 is in contact with the fixed contact 2.

第２図（ａ）は可動枠１７がさらに同方向に移動してば
ね性可動接触子８が弾性変形することにより可動接点４
に接点圧が加えられるとともに、可動接点３が固定接点
ｌに接触した状態である。このとき初めて固定接触子１
０．１１間が導通したこととなる。FIG. 2(a) shows that the movable frame 17 further moves in the same direction and the spring movable contact 8 is elastically deformed, so that the movable contact 4
Contact pressure is applied to the movable contact 3 and the fixed contact 1 is in contact with the movable contact 3. At this time, fixed contact 1
This means that conduction is established between 0.11 and 0.11.

第２図（ｂｌは可動枠１７がさらに移動してばね性可動
接触子８が弾性変形するとともに、剛性可動接触子５が
固定接点ｌを支点に回動した状態である。このとき、可
動接点３は固定接点ｌに対して接点圧が加わりながら矢
印Ｂの方向にローリングをすることとなる。FIG. 2 (bl shows a state in which the movable frame 17 further moves and the spring movable contact 8 is elastically deformed, and the rigid movable contact 5 rotates about the fixed contact l as a fulcrum. At this time, the movable contact 3 rolls in the direction of arrow B while applying contact pressure to the fixed contact l.

ｌ１ｊ）記は可動枠１７のオン動作であるが、オフ動作
は第２図（ｂｌから前記と逆の過程で第１図（ａｌに至
る動作によって行われる。11j) is the ON operation of the movable frame 17, but the OFF operation is performed by the operation from FIG. 2 (BL) to FIG. 1 (AL) in the reverse process to the above.

前記動作において、固定接触子１０．１１＠導通ずる可
動接点３の投入時に突入電流によるアークまたは接点バ
ウンスによるアークが発生し、可動接点３および固定接
点１が熔融し冷却することにより溶着が発生する。とく
に突入電流時の電流密度は電磁反発が起こる程大きなも
のとなる。しかし、１１１記ロ一リング動作による回転
モーメントにより確実に溶着を解離することができる。In the above operation, when the fixed contact 10.11@conducting movable contact 3 is turned on, an arc is generated due to an inrush current or an arc is generated due to contact bounce, and the movable contact 3 and fixed contact 1 are melted and cooled, resulting in welding. . In particular, the current density during rush current is so large that electromagnetic repulsion occurs. However, the rotational moment generated by the rolling operation described in step 111 can reliably separate the weld.

なお、前記実施例はばね性可動接触子８の基端部７に折
返し部Ｉ５を形成したが、これは接点圧の付与と剛性可
動接触子５のローリング動作とが容易になるようにする
ためで折返し部１５はなくてもばね性可動接触子８のば
ね性により接点圧を付与することができるとともに、ロ
ーリング動作することができるものである。また駆動手
段９と剛性可動接触子５またはばね性可動接触子８との
保合は前記実施例に限らず他の係合手段でもよいもので
あり、また少な（とも一方が係合すればよい。また前記
実施例は可動接点４を可動接点３よりも固定接点１．２
により接近するように配置して駆動手段９の動作時に可
動接点４が先入れ後切れするようにしたが、接点間隔は
同しにして駆動手段９により可動接点４が先入れ後切れ
するように駆動してもよい、またばね性可動接触子８と
剛性可動接触子５はかしめ固着したが、溶接等でもよい
ものである。In the above embodiment, the folded portion I5 was formed at the base end 7 of the spring movable contact 8, but this was done in order to facilitate the application of contact pressure and the rolling motion of the rigid movable contact 5. Even without the folded portion 15, contact pressure can be applied due to the spring properties of the spring movable contact 8, and rolling action can be performed. Further, the engagement between the driving means 9 and the rigid movable contact 5 or the spring movable contact 8 is not limited to the above-mentioned embodiments, and other engagement means may be used. .Furthermore, in the above embodiment, the movable contact 4 is arranged as a fixed contact 1.2 rather than the movable contact 3.
The movable contacts 4 are arranged closer to each other so that when the drive means 9 operates, the movable contacts 4 break after the first insertion, but the contact spacing is kept the same so that the drive means 9 causes the movable contacts 4 to break after the first insertion. Although the spring movable contact 8 and the rigid movable contact 5 are fixed by caulking, they may be welded or the like.

（発明の効果〕 この発明によれば、剛性可動接触子の可動接点が後から
投入されるとともに先切れとなるため、剛性可動接触子
の可動接点およびその固定接点の間にアークが発生する
が、剛性可動接触子は投入後に固定接点を支点に回動す
るためその回転モーメントにより溶着を解離することが
でき、このため耐溶着性を有する。また各接点は耐溶着
性材料を使用しなくてもよくなるため、接触安定性が向
上する。しかも構造が複雑化しないという効果がある。(Effects of the Invention) According to the present invention, since the movable contact of the rigid movable contact is turned on later and is cut first, an arc is generated between the movable contact of the rigid movable contact and its fixed contact. Since the rigid movable contact rotates around the fixed contact after being turned on, the weld can be released by the rotational moment, so it has welding resistance.In addition, each contact does not need to be made of welding resistant material. Since the contact stability is improved, the structure is not complicated.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの発明の一実施例の接点投入前の動作状態を
説明する説明図、第２図は接点投入動作を説明する説明
図、第３図はその分解斜視図、第４図は従来例の断面図
、第５図はコンタクタの概略断面図である。 １．２・・・固定接点、３．４・・・可動接点、５・・
・剛性可動接触子、６．７・・・基端部、８・・・ばね
性可動接触子、９・・・駆動手段 （ａ） （ｂ） 第２図 第３図 （ａ） （ｂ） （Ｃン 第４図 手続主市正書（自発 昭和６１年０１月１７日　　　　よ 特許庁長官殿　　　　　　　　　　ま Ｉ段ロ６０年特許願第２４００１２号 ２、発明の名称 接、ｌ履１胱ｒ装置 ３、補正をする者 ゴＩ刊牛との関係　　出願人 ４、代理人 ５、補正命令の日付 自発補正 明細書第９頁第１２〜１３行目、［突入電流にるアーク
」とあるを「突入電流による電磁反発たは接点バウンス
によるアーク」と訂正する。Fig. 1 is an explanatory diagram for explaining the operating state before contact closing of an embodiment of the present invention, Fig. 2 is an explanatory diagram for explaining the contact closing operation, Fig. 3 is an exploded perspective view thereof, and Fig. 4 is a conventional diagram. An example cross-sectional view, FIG. 5, is a schematic cross-sectional view of a contactor. 1.2... Fixed contact, 3.4... Movable contact, 5...
・Rigid movable contact, 6.7... Base end portion, 8... Spring movable contact, 9... Drive means (a) (b) Fig. 2 Fig. 3 (a) (b) (C Figure 4 Proceeding City Official Letter (Voluntary January 17, 1985) Dear Commissioner of the Japan Patent Office, 1960 Patent Application No. 240012 2, title of the invention, l shoes 1 body r device 3 , Relationship with the person making the amendment Applicant 4, Agent 5, Date of amendment order, Voluntary amendment specification, page 9, lines 12-13 This is corrected to "arc caused by electromagnetic repulsion due to current or contact bounce."

Claims (2)

【特許請求の範囲】[Claims] （１）一対の固定接点と、これらの固定接点に接離する
一対の可動接点と、これらの可動接点のうちの一方を先
端部に設けた剛性を有する剛性可動接触子と、前記可動
接点の他方を先端部に設けて基端部が前記剛性可動接触
子の基端部に連結されたばね性を有するばね性可動接触
子と、前記剛性可動接触子および前記ばね性可動接触子
の少なくとも一方の基端部を押圧して前記ばね性可動接
触子の可動接点を前記剛性可動接触子の可動接点よりも
先に前記固定接点に投入させるとともに前記剛性可動接
触子の可動接点が固定接点に接触した状態で前記剛性可
動接触子が前記固定接点を支点に回動するように駆動す
る駆動手段とを備えた接点開閉装置。(1) A pair of fixed contacts, a pair of movable contacts that come into contact with and separate from these fixed contacts, a rigid movable contact having rigidity with one of these movable contacts provided at its tip, and one of the movable contacts. a spring movable contact having spring properties, the other being provided at a distal end and a base end connected to a base end of the rigid movable contact; and at least one of the rigid movable contact and the spring movable contact. The base end portion is pressed to cause the movable contact of the spring movable contact to enter the fixed contact before the movable contact of the rigid movable contact, and the movable contact of the rigid movable contact contacts the fixed contact. a driving means for driving the rigid movable contact to rotate about the fixed contact in a state in which the rigid movable contact is rotated about the fixed contact. （２）前記ばね性可動接触子の基端部は折返し部を有し
その端部が前記剛性可動接触子の基端部に連結されてい
る特許請求の範囲第（１）項記載の接点開閉装置。(2) The contact opening/closing according to claim (1), wherein the base end of the spring movable contact has a folded part, and the end thereof is connected to the base end of the rigid movable contact. Device.
JP24001285A 1985-10-25 1985-10-25 Contact switch Pending JPS62100913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24001285A JPS62100913A (en) 1985-10-25 1985-10-25 Contact switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24001285A JPS62100913A (en) 1985-10-25 1985-10-25 Contact switch

Publications (1)

Publication Number Publication Date
JPS62100913A true JPS62100913A (en) 1987-05-11

Family

ID=17053147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24001285A Pending JPS62100913A (en) 1985-10-25 1985-10-25 Contact switch

Country Status (1)

Country Link
JP (1) JPS62100913A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0515237U (en) * 1991-04-26 1993-02-26 松下電工株式会社 Contact switch
JP2008171711A (en) * 2007-01-12 2008-07-24 Metro Denso Kk Switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0515237U (en) * 1991-04-26 1993-02-26 松下電工株式会社 Contact switch
JP2008171711A (en) * 2007-01-12 2008-07-24 Metro Denso Kk Switch

Similar Documents

Publication Publication Date Title
KR920008726B1 (en) Circuit breaker
JP2762704B2 (en) Circuit breaker
JPS62100913A (en) Contact switch
JPS6337452B2 (en)
JP2004349203A (en) Contact point constitution for dc loading, and switch having contact point constitution
JP2633959B2 (en) Circuit breaker
JP2959216B2 (en) Switch contacts
JP3407102B2 (en) Circuit breaker
JPH0721890A (en) Contact switching device
JPS61173421A (en) Contact switchgear
JP2842115B2 (en) Contact switching device
JPS61232523A (en) Contact switchgear
JPH07220549A (en) Contact operating device
JPS62100912A (en) Contact switch
JP2828077B2 (en) Circuit breaker
JPS62123614A (en) Contact switchgear
JPS6271137A (en) Contact switching device
JPH06283089A (en) Contact open/close device
JPS61148720A (en) Relay with holed contact
JPS61173422A (en) Contact switchgear
JPH05242753A (en) Contact switching device and electromagnetic relay
JPS58150236A (en) Electromagnetic contactor
JPS62147610A (en) Contact switchgear
JPS5828152A (en) Circuit breaker
JPH0610942B2 (en) Power switch