JPH0113186B2 - - Google Patents
Info
- Publication number
- JPH0113186B2 JPH0113186B2 JP56126484A JP12648481A JPH0113186B2 JP H0113186 B2 JPH0113186 B2 JP H0113186B2 JP 56126484 A JP56126484 A JP 56126484A JP 12648481 A JP12648481 A JP 12648481A JP H0113186 B2 JPH0113186 B2 JP H0113186B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- movable contact
- fixed
- movable
- spring
- 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
- 239000002470 thermal conductor Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Description
【発明の詳細な説明】
本発明は電磁接触器の可動接点機構、特に電動
機などの電路を開閉制御する電磁接触器の可動接
点機構に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a movable contact mechanism of an electromagnetic contactor, and more particularly to a movable contact mechanism of an electromagnetic contactor that controls opening and closing of an electric circuit such as an electric motor.
従来、この種の電磁接触器の可動接点機構とし
て第１図に示される機構が使用されていた。 Conventionally, a mechanism shown in FIG. 1 has been used as a movable contact mechanism for this type of electromagnetic contactor.
図において、電磁接触器本体を取付盤などに取
り付けるために箱状に形成された取付板１０が設
けられ、取付板１０に設けられた複数の取付孔１
０ａを介して電磁接触器本体が取付盤に螺着され
ている。 In the figure, a box-shaped mounting plate 10 is provided for mounting the electromagnetic contactor main body on a mounting board, etc., and a plurality of mounting holes 1 are provided in the mounting plate 10.
The electromagnetic contactor main body is screwed onto the mounting board via Oa.
そして、電磁接触器は以下に説明するような可
動接点機構を有している。 The electromagnetic contactor has a movable contact mechanism as described below.
すなわち、取付板１０には絶縁材にて形成され
たベース１２が取付ねじ１４によつて固定され、
ベース１２には主回路に接続される端子板１６が
固定され、また端子板１６には固定接点１８を備
えた固定接触子２０が端子板１６と導電状態で固
定されている。更に、ベース１２には絶縁材にて
形成されたクロスバー２２が第１図において上下
動可能に設けられており、クロスバー２２は該ク
ロスバー２２下端に設けられたばね受２４と取付
板１０との間に圧入された引外しばね２６によ
り、第１図において上方向に付勢されている。そ
して、上記クロスバー２２に設けられた保持孔２
８には、前記固定接点１８と対向配置される可動
接点３０を備えた可動接触子３２が挿設され、可
動接触子３２はクロスバー２２に設けられたばね
受３４とばね支え３６との間に圧縮状態で装着さ
れた接触子ばね３８により第１図において下方向
に付勢されている。 That is, a base 12 made of an insulating material is fixed to the mounting plate 10 with mounting screws 14.
A terminal plate 16 connected to the main circuit is fixed to the base 12, and a fixed contact 20 having a fixed contact 18 is fixed to the terminal plate 16 in a conductive state. Further, a cross bar 22 made of an insulating material is provided on the base 12 so as to be movable up and down as shown in FIG. A tripping spring 26 press-fitted between the two is biased upward in FIG. The holding hole 2 provided in the cross bar 22 is
8, a movable contact 32 having a movable contact 30 disposed opposite to the fixed contact 18 is inserted, and the movable contact 32 is inserted between a spring receiver 34 and a spring support 36 provided on the cross bar 22. It is biased downward in FIG. 1 by a contact spring 38 mounted in a compressed state.
可動接点機構は以上の構成から成り、以下に可
動接点３０を駆動し固定接点１８との協働で接点
開閉作用を行わせるための駆動機構について説明
する。 The movable contact mechanism has the above configuration, and the drive mechanism for driving the movable contact 30 and performing the contact opening/closing action in cooperation with the fixed contact 18 will be described below.
すなわち、取付板１０上にはけい素鋼板が積層
された固定鉄心４０が配設されており、この固定
鉄心４０には複数のピン４２が挿通され、更にこ
のピン４２の両端部に緩衝ゴム４４が装着される
とともに、この緩衝ゴム４４と取付板１０との間
に緩衝ばね４６が装設されている。また、前記ク
ロスバー２２の下端にはピン４８にて可動鉄心５
０が固定され、該可動鉄心５０は固定鉄心４０に
対して所定の間隙を隔てて対向配置されている。
そして、固定鉄心４０に電磁力を与え可動鉄心を
吸引するために、固定鉄心４０に装着されたコイ
ル保持枠５２には操作コイル５４が巻回されてお
り、操作コイル５４とコイル端子５６とはリード
線５８にて接続されている。 That is, a fixed core 40 made of laminated silicon steel plates is disposed on the mounting plate 10, a plurality of pins 42 are inserted through the fixed core 40, and buffer rubber 44 is inserted at both ends of the pins 42. A buffer spring 46 is installed between the buffer rubber 44 and the mounting plate 10. Further, a movable iron core 5 is attached to the lower end of the cross bar 22 by a pin 48.
0 is fixed, and the movable core 50 is disposed opposite to the fixed core 40 with a predetermined gap therebetween.
In order to apply electromagnetic force to the fixed core 40 and attract the movable core, an operating coil 54 is wound around a coil holding frame 52 attached to the fixed core 40, and the operating coil 54 and the coil terminal 56 are connected to each other. It is connected by a lead wire 58.
更に、接点開閉の際に生じるアークを消弧させ
るために、ベース１２には耐熱性材料から成るア
ークボツクス６０がねじ６２にて固定されてお
り、このアークボツクス６０内には磁性金属から
成り可動接点３０及び固定接点１８を包囲するよ
うに形成されたグリツド６４が設けられ、該グリ
ツド６４によりアークが導き消弧される。 Furthermore, in order to extinguish the arc that occurs when the contacts open and close, an arc box 60 made of a heat-resistant material is fixed to the base 12 with screws 62. A grid 64 is provided surrounding contact 30 and stationary contact 18 for guiding and extinguishing the arc.
従来の電磁接触器の可動接点機構は以上の構成
から成り、以下にその作用を説明する。 The movable contact mechanism of a conventional electromagnetic contactor has the above configuration, and its operation will be explained below.
操作コイル５４に駆動電圧が印加されると、こ
の操作コイル５４が発生する磁束により固定鉄心
４０と可動鉄心５０との間に電磁吸引力が生じ、
上記可動鉄心５０が引外しばね２６に抗して固定
鉄心４０に吸引される。これに伴つて可動鉄心５
０に連結されたクロスバー２２が固定鉄心４０側
に移動し、クロスバー２２に保持された可動接触
子３２の可動接点３０が固定接触子２０の固定接
点１８と当接する。このとき、可動接点３０と固
定接点１８との間の接点ギヤツプよりも可動鉄心
５０と固定鉄心４０との間の鉄心ギヤツプの方が
大きく形成されているので、鉄心の閉成時にはク
ロスバー２２は上記接点の当接位置よりもさらに
固定鉄心４０側に移動する。このため接触子ばね
３８が圧縮変形し、このばね圧力がばね支え３６
を介して可動接触子３２に伝達され、所定の接触
圧力を得て接点１８，３０間を閉成する。 When a driving voltage is applied to the operating coil 54, an electromagnetic attractive force is generated between the fixed iron core 40 and the movable iron core 50 due to the magnetic flux generated by the operating coil 54.
The movable core 50 is attracted to the fixed core 40 against the tripping spring 26. Along with this, the movable iron core 5
0 moves toward the fixed core 40, and the movable contact 30 of the movable contactor 32 held by the crossbar 22 comes into contact with the fixed contact 18 of the fixed contactor 20. At this time, since the core gap between the movable core 50 and the fixed core 40 is larger than the contact gap between the movable contact 30 and the fixed contact 18, the crossbar 22 is closed when the core is closed. The contact point moves further toward the fixed core 40 than the contact position of the contact point. Therefore, the contact spring 38 is compressed and deformed, and this spring pressure is applied to the spring support 36.
The pressure is transmitted to the movable contact 32 via the contact pressure, and a predetermined contact pressure is obtained to close the contact between the contacts 18 and 30.
操作コイル５４に印加されていた駆動電圧を取
り除くと、固定鉄心４０と可動鉄心５０との間の
電磁吸引力は消滅し、クロスバー２２は圧縮され
ている引外しばね２６のばね付勢力により反固定
鉄心側に移動されて各接点１８，３０間が開離す
る。 When the drive voltage applied to the operating coil 54 is removed, the electromagnetic attractive force between the fixed core 40 and the movable core 50 disappears, and the crossbar 22 reacts due to the spring biasing force of the tripping spring 26 being compressed. The contacts 18 and 30 are moved to the fixed core side and separated.
このとき、可動接点３０と固定接点１８との間
にアークが発生するが、このアークは上記接点部
分を包囲するグリツド６４内に引込まれ、冷却分
断されて消弧される。 At this time, an arc is generated between the movable contact 30 and the fixed contact 18, but this arc is drawn into the grid 64 surrounding the contact portion and is cooled, separated, and extinguished.
しかしながら、従来の電磁接触器の可動接点機
構においては、可動接触子３２は単にクロスバー
２２に設けられた保持孔２８に挿設され、ばね受
３４とばね支え３６との間に圧縮状態で装設され
た接触子ばね３８により押圧支持されているにす
ぎなかつた。このため、固定接点１８と可動接点
３８との接点開閉作用により可動接触子３２がが
たつき、可動接点１８の接点位置ずれを生じて両
接点１８，３８の消耗量が多くなるという欠点が
あつた。 However, in the movable contact mechanism of the conventional electromagnetic contactor, the movable contact 32 is simply inserted into the holding hole 28 provided in the cross bar 22 and is mounted in a compressed state between the spring receiver 34 and the spring support 36. It was simply supported by the contact spring 38 provided. Therefore, the movable contact 32 rattles due to the contact opening/closing action between the fixed contact 18 and the movable contact 38, which causes the contact position of the movable contact 18 to shift, resulting in increased wear of both the contacts 18 and 38. Ta.
また、従来の電磁接触器の可動接点機構におい
ては可動接触子３２の着脱交換作業が複雑化し、
可動接触子３２を容易に取り替えることができな
いという欠点があつた。 In addition, in the movable contact mechanism of the conventional electromagnetic contactor, the work of attaching and detaching the movable contactor 32 becomes complicated.
There was a drawback that the movable contactor 32 could not be easily replaced.
更に、従来の電磁接触器の可動接点機構におい
ては、接点閉成時の両接点１８，３０間の接触抵
抗により両接点１８，３０が発熱してその消耗量
が多くなり、また両接点１８，３０に接続される
電線等を損傷する等の欠点があつた。 Furthermore, in the movable contact mechanism of a conventional electromagnetic contactor, both contacts 18, 30 generate heat due to contact resistance between both contacts 18, 30 when the contacts are closed, resulting in a large amount of wear. There were drawbacks such as damage to the electric wires etc. connected to 30.
本発明は前述した従来の課題に鑑み為されたも
のであり、その目的は接点開閉作用による可動接
触子のがたつきを防止して可動接点の接点位置ず
れを防止することができ、可動接触子を容易に着
脱交換することができ、両接点の接触抵抗による
発熱を放熱することができる電磁接触器の可動接
点機構を提供することにある。 The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to prevent the movable contact from wobbling due to the contact opening/closing action and to prevent the contact position of the movable contact from shifting. It is an object of the present invention to provide a movable contact mechanism for an electromagnetic contactor, in which a child can be easily attached and detached, and heat generated by contact resistance of both contacts can be radiated.
上記目的を達成するために、本発明は、ベース
に固定された主回路固定接点１８と、ベースに摺
動自在に設けられ上端面に開放するばね孔７２を
有するクロスバー６６と、該クロスバー６６のば
ね孔７２に一端から挿入され他端が前記クロスバ
ー６６の前記上端面から外部に突出した枠体から
なるばね受７４と、前記固定接点と対向する可動
接点７０が固着され、前記ばね受７４の枠内に挿
通されて前記クロスバー６６の上端面に当接配置
される可動接触子６８と、前記ばね受７４の枠内
に挿通されこのばね受７４と可動接触子６８との
間に配設された可動接触子押さえであつて、ばね
受７４及び可動接触子６８それぞれへの係合部
と、指が掛止可能な指掛け部９２と、複数の凹凸
部からなる波形の放熱フイン９０と、が形成され
た熱良導体からなる可動接触子押さえ８０と、前
記ばね受７４の一端内面と前記クロスバー６６に
固定されたストツパ７８との間で圧縮設置された
接点ばね７６と、を備えたことを特徴とする。 In order to achieve the above object, the present invention provides a main circuit fixed contact 18 fixed to a base, a cross bar 66 having a spring hole 72 slidably provided in the base and open to the upper end surface, and A spring receiver 74 consisting of a frame that is inserted from one end into the spring hole 72 of the cross bar 66 and whose other end protrudes externally from the upper end surface of the cross bar 66, and a movable contact 70 facing the fixed contact are fixed, and the spring A movable contact 68 that is inserted into the frame of the receiver 74 and placed in contact with the upper end surface of the cross bar 66; The movable contact holder is disposed in the movable contact holder, and includes an engaging portion for the spring receiver 74 and the movable contact 68, a finger hook portion 92 on which a finger can be hooked, and a corrugated heat dissipating fin consisting of a plurality of uneven portions. 90 and a movable contact holder 80 made of a good thermal conductor, and a contact spring 76 that is compressed and installed between an inner surface of one end of the spring receiver 74 and a stopper 78 fixed to the cross bar 66. It is characterized by having
以下図面に基づいて本発明の好適な実施例を説
明する。 Preferred embodiments of the present invention will be described below based on the drawings.
第２図には本発明に係る電磁接触器の可動接点
機構の好適な実施例が示されており、図において
前述した従来例と同一部材には同一符号を付して
説明を省略する。 FIG. 2 shows a preferred embodiment of the movable contact mechanism of the electromagnetic contactor according to the present invention, and in the figure, the same members as those in the conventional example described above are given the same reference numerals, and the explanation thereof will be omitted.
クロスバー６６の上端部６６ａは第３図で示さ
れるように船底型に形成され、該クロスバー６６
の上端部６６ａには断面形状がコの字型をした可
動接触子６８が当接配置されており、可動接触子
６８の両端下部には可動接点７０が固着されてい
る。そして、第４図で示されるようにクロスバー
６６の内部に設けられたばね孔７２には、略長方
形の枠体からなるばね受け７４の一端が挿入され
ており、ばね受け７４の他端はクロスバー６６の
上端面から突出し、その突出部に挿通されクロス
バーの上端部６６ａに当接した前記可動接触子６
８を把持している。また、クロスバー６６のばね
孔７２には接点ばね７６が圧縮状態で挿入され、
接点ばね７６の一端はばね受け７４の一端内面に
固定され、他端はクロスバー６６に固定されたス
トツパ７８に固定されている。従つて、可動接触
子６８は接点ばね７６の付勢力により常時固定接
点１８側に向かつて押圧付勢されている。 The upper end portion 66a of the cross bar 66 is formed into a bottom shape as shown in FIG.
A movable contact 68 having a U-shaped cross section is disposed in contact with the upper end 66a of the movable contact 68, and movable contacts 70 are fixed to the lower portions of both ends of the movable contact 68. As shown in FIG. 4, one end of a spring receiver 74 made of a substantially rectangular frame is inserted into a spring hole 72 provided inside the cross bar 66, and the other end of the spring receiver 74 is connected to a cross bar 66. The movable contact 6 protrudes from the upper end surface of the bar 66, is inserted through the protrusion, and abuts the upper end 66a of the cross bar.
He is holding 8. Further, a contact spring 76 is inserted in a compressed state into the spring hole 72 of the cross bar 66.
One end of the contact spring 76 is fixed to the inner surface of one end of the spring receiver 74, and the other end is fixed to a stopper 78 fixed to the cross bar 66. Therefore, the movable contact 68 is always urged toward the fixed contact 18 by the urging force of the contact spring 76.
そして、可動接触子６８とばね受け７４との間
には熱良導体から成る可動接触子押え８０が装着
されており、可動接触子押え８０下部には可動接
触子６８に設けられた係合孔８２と係合して装着
状態を保持する係合突起８４が設けられ、また可
動接触子押え８０上部にはばね受け７５に設けら
れた係合突起８６と係合して装着状態を保持する
係合孔８８が設けられている。更に、可動接触子
押え８０の上面には図示のように複数の凹凸部か
らからなる波形の放熱フイン９０が形成されてお
り、両接点１８，７０の接触抵抗により生じる発
熱は該放熱フイン９０にて放熱される。更に、可
動接触子押え８０には指掛け部９２が設けられ、
該指掛け部９２に指を掛けて可動接触子押え８０
を第５図で示されるように接点ばね７６の付勢力
に抗して引き上げることにより、可動接触子６８
の着脱交換を行うことができる。 A movable contact holder 80 made of a good thermal conductor is installed between the movable contact 68 and the spring receiver 74, and an engagement hole 82 provided in the movable contact 68 is provided at the lower part of the movable contact holder 80. An engagement protrusion 84 is provided on the upper part of the movable contact holder 80 to maintain the attached state by engaging with an engagement protrusion 86 provided on the spring receiver 75. A hole 88 is provided. Furthermore, as shown in the figure, a corrugated heat dissipation fin 90 is formed on the upper surface of the movable contact holder 80 and is made up of a plurality of uneven parts. heat is dissipated. Furthermore, the movable contact presser 80 is provided with a finger hook 92,
Hook your finger on the finger hook 92 and press the movable contact holder 80.
As shown in FIG. 5, the movable contact 68
can be removed and replaced.
そして、これら係合突起８４、係合孔８８、放
熱フイン９０及び指掛け部９２を有する可動接触
子押え８０はアルミニウムダイキヤストにて一体
成形することが好適であり、１個の部品で可動接
触子６８を押圧支持する機能の他に、両接点１
８，７０の放熱機能及び可動接触子６８の着脱交
換時の指掛け機能をも備えている。 It is preferable that the movable contact holder 80 having the engaging protrusions 84, the engaging holes 88, the heat dissipating fins 90, and the finger hooks 92 be integrally molded with aluminum die-casting, so that the movable contact holder 80 can be formed as one piece. In addition to the function of pressing and supporting 68, both contacts 1
It also has a heat dissipation function of 8 and 70 and a finger hook function for attaching and detaching the movable contact 68.
本発明の実施例は以上の構成から成り、以下に
その作用を説明する。 The embodiment of the present invention has the above configuration, and its operation will be explained below.
第２図において操作コイル５４に駆動電圧が印
加されると、この操作コイル５４が発生する磁束
により固定鉄心４０と可動鉄心５０との間に電磁
吸引力が生じ、上記可動鉄心５０が図示していな
い引外しばねの付勢力に抗して固定鉄心４０に吸
引される。これに伴つて可動鉄心５０に連結され
たクロスバー６６が固定鉄心４０側に移動し、ク
ロスバー６６に保持された可動接触子６８の可動
接点７０が固定接触子２０の固定接点１８と当接
する。このとき、可動接触子６８は接点ばね７６
の付勢力によつてばね受け７４及び可動接触子押
え８０を介して固定接触子２０に向けて押圧付勢
され、第６図において実線で示されるようにクロ
スバー６６の船底型上端部６６ａにて位置決めさ
れた状態にあるので、両接点１８，７０の接点位
置ずれを防止することができる。また、可動接触
子６８はその断面形状がコの字型をしているので
機械的強度が強く、可動接点７０が固定接点１８
に当接した際の変形を防止することができる。 In FIG. 2, when a driving voltage is applied to the operating coil 54, an electromagnetic attraction force is generated between the fixed iron core 40 and the movable iron core 50 due to the magnetic flux generated by the operating coil 54, and the movable iron core 50 is not shown in the figure. It is attracted to the fixed core 40 against the biasing force of the tripping spring. Along with this, the cross bar 66 connected to the movable core 50 moves toward the fixed core 40, and the movable contact 70 of the movable contact 68 held by the cross bar 66 comes into contact with the fixed contact 18 of the fixed contact 20. . At this time, the movable contactor 68 is moved by the contact spring 76
is pressed toward the fixed contact 20 via the spring receiver 74 and the movable contact holder 80 by the biasing force of Since the contact points 18 and 70 are in a properly positioned state, it is possible to prevent the contacts 18 and 70 from shifting their positions. Furthermore, since the movable contact 68 has a U-shaped cross-section, it has strong mechanical strength, and the movable contact 70 is similar to the fixed contact 18.
It is possible to prevent deformation when coming into contact with.
そして、可動接点７０と固定接点１８との間の
接点ギヤツプよりも可動鉄心５０と固定鉄心４０
との間の鉄心ギヤツプの方が大きく形成されてい
るので、鉄心の閉成時にはクロスバー６６は上記
接点の当接位置よりもさらに固定鉄心４０側に移
動する。このため、接点ばね７６が圧縮変形し、
このばね圧力がばね受け７４及び可動接触子押え
８０を介して可動接触子６８に伝達され、所定の
接触圧力を得て接点１８，７０間を閉成する。こ
のとき、可動接触子６８は第６図において２点鎖
線で示される位置に保持されている。 The contact gap between the movable contact 70 and the fixed contact 18 is
Since the core gap between the two is larger, when the core is closed, the crossbar 66 moves further toward the fixed core 40 than the contact position of the contact. Therefore, the contact spring 76 is compressed and deformed,
This spring pressure is transmitted to the movable contact 68 via the spring receiver 74 and the movable contact holder 80, and a predetermined contact pressure is obtained to close the contacts 18 and 70. At this time, the movable contactor 68 is held at the position shown by the two-dot chain line in FIG.
このように両接点１８，７０が閉成状態にある
とき、両接点１８，７０間の接触抵抗により両接
点１８，７０が発熱することとなるが、このとき
発生した熱は可動接触子６８を経て熱良導体から
成る可動接触子押え８０に伝達され、該可動接触
子押え８０に設けられた放熱フイン９０にて放熱
されるので、両接点１８，７０の発熱による消耗
量を減少させることができる。 When both contacts 18 and 70 are in the closed state in this way, both contacts 18 and 70 generate heat due to the contact resistance between both contacts 18 and 70, but the heat generated at this time moves the movable contact 68. The heat is then transmitted to the movable contact holder 80 made of a good thermal conductor, and is radiated by the heat radiation fins 90 provided on the movable contact holder 80, so that the amount of wear due to heat generation of both the contacts 18 and 70 can be reduced. .
次に、操作コイル５４に印加されていた駆動電
圧を取り除くと、固定鉄心４０と可動鉄心５０と
の間の電磁吸引力は消滅し、クロスバー６６は図
示していない引外しばねの付勢力により反固定鉄
心側に移動されて各接点１８，７０間が開離す
る。このような接点開離過程において、第６図で
示されるように可動接触子６８の開成時移動距離
L1はクロスバー上部６６ａの船底深さL2よりも
短くなるように構成されているので、可動接触子
６８を実線で示されるような位置に正確に復帰さ
せることができる。 Next, when the drive voltage applied to the operating coil 54 is removed, the electromagnetic attraction force between the fixed core 40 and the movable core 50 disappears, and the crossbar 66 is moved by the biasing force of a tripping spring (not shown). The contacts 18 and 70 are moved to the side opposite to the fixed core, and the contacts 18 and 70 are opened. In such a contact opening process, as shown in FIG.
Since L 1 is configured to be shorter than the bottom depth L 2 of the crossbar upper portion 66a, the movable contactor 68 can be accurately returned to the position shown by the solid line.
このように、両接点１８，７０が開離する際、
可動接点７０と固定接点１８との間にアークが発
生するが、このアークは上記接点部分を包囲する
グリツド６４内に引込まれ、冷却分断されて消弧
される。 In this way, when both contacts 18 and 70 open,
An arc is generated between the movable contact 70 and the fixed contact 18, but this arc is drawn into the grid 64 surrounding the contact portion, and is cooled, separated, and extinguished.
可動接触子６８を着脱交換する場合には、可動
接触子押え８０の指掛け部９２に指を掛けて接点
ばね７６の付勢力に抗して第５図において矢印Ａ
方向に可動接触子押えを引き上げ、可動接触子押
え８０の係合突起８４と可動接触子６８の係合孔
８２との係合状態を解除する。そして、可動接触
子６８を矢印Ｂ方向に引き出すことにより容易に
可動接触子６８を取り外すことができる。可動接
触子６８を取り付ける際には、以上の操作と逆の
操作をすることにより行うことができる。 When attaching or detaching the movable contact 68, put your finger on the finger hook 92 of the movable contact holder 80, resist the biasing force of the contact spring 76, and move the arrow A in FIG.
The movable contact holder is pulled up in the direction to release the engagement between the engagement protrusion 84 of the movable contact holder 80 and the engagement hole 82 of the movable contact 68. Then, by pulling out the movable contact 68 in the direction of arrow B, the movable contact 68 can be easily removed. When attaching the movable contactor 68, it can be done by performing the operation in reverse to the above operation.
以上説明したように本発明によれば、ばね受け
７４を接点ばね７６にて付勢しこの付勢力によつ
てばね受７４内に挿通した可動接触子６８を可動
接触子押さえ８０を介してクロスバーの上端部６
６ａ上に押圧保持し、接点開閉作用による可動接
触子のがたつきを防止して可動接点の接点位置ず
れを防止することができる。更に、可動接触子押
さえに形成した指掛け部及び放熱フインによつ
て、可動接触子を容易に着脱交換することができ
るとともに、両接点の接触抵抗による発熱を放熱
することができる。 As explained above, according to the present invention, the spring receiver 74 is biased by the contact spring 76, and this biasing force causes the movable contact 68 inserted into the spring receiver 74 to be crossed via the movable contact retainer 80. Upper end of bar 6
6a, it is possible to prevent the movable contact from wobbling due to the contact opening/closing action, thereby preventing the movable contact from shifting its contact position. Furthermore, the finger hook and the heat radiation fin formed on the movable contact holder allow the movable contact to be easily attached and removed, and also to radiate the heat generated by the contact resistance of both contacts.
第１図は従来の電磁接触器の可動接点機構の実
例を示す断面図、第２図は本発明に係る電磁接触
器の可動接点機構の好適な実施例を示す要部断面
図、第３図は本発明に係る電磁接触器の可動接点
機構の外観斜視図、第４図は第３図の−断面
図、第５図は第４図で示される電磁接触器の可動
接点機構において可動接触子の着脱状態を示す説
明図、第６図は第３図で示される電磁接触器の可
動接点機構において可動接触子の作動状態を示す
説明図である。
各図中同一部材には同一符号を付して１２はベ
ース、１８は固定接点、２０は固定接触子、４０
は固定鉄心、５０は可動鉄心、６６はクロスバ
ー、６６ａはクロスバー上端部、６８は可動接触
子、７０は可動接点、７２はばね孔、７４はばね
受け、７６は接点ばね、７８はストツパ、８０は
可動接触子押え、８４は係合突起、８８は係合
孔、９０は放熱フイン、９２は指掛け部である。
FIG. 1 is a cross-sectional view showing an actual example of a movable contact mechanism of a conventional electromagnetic contactor, FIG. 2 is a cross-sectional view of essential parts showing a preferred embodiment of a movable contact mechanism of a magnetic contactor according to the present invention, and FIG. is an external perspective view of the movable contact mechanism of the electromagnetic contactor according to the present invention, FIG. 4 is a cross-sectional view taken from FIG. FIG. 6 is an explanatory diagram showing the operating state of the movable contact in the movable contact mechanism of the electromagnetic contactor shown in FIG. 3. In each figure, the same members are given the same reference numerals, and 12 is a base, 18 is a fixed contact, 20 is a fixed contact, and 40 is a fixed contact.
50 is a fixed core, 50 is a movable core, 66 is a crossbar, 66a is an upper end of the crossbar, 68 is a movable contact, 70 is a movable contact, 72 is a spring hole, 74 is a spring receiver, 76 is a contact spring, and 78 is a stopper. , 80 is a movable contact holder, 84 is an engagement protrusion, 88 is an engagement hole, 90 is a heat dissipation fin, and 92 is a finger rest.
Claims (1)
ばね孔７２を有するクロスバー６６と、 該クロスバー６６のばね孔７２に一端から挿入
され他端が前記クロスバー６６の前記上端面から
外部に突出した枠体からなるばね受７４と、 前記固定接点と対向する可動接点７０が固着さ
れ、前記ばね受７４の枠内に挿通されて前記クロ
スバー６６の上端面に当接配置される可動接触子
６８と、 前記ばね受７４の枠内に挿通されこのばね受７
４と可動接触子６８との間に配設された可動接触
子押さえであつて、ばね受７４及び可動接触子６
８それぞれへの係合部と、指が掛止可能な指掛け
部９２と、複数の凹凸部からなる波形の放熱フイ
ン９０と、が形成された熱良導体からなる可動接
触子押さえ８０と、 前記ばね受７４の一端内面と前記クロスバー６
６に固定されたストツパ７８との間で圧縮設置さ
れた接点ばね７６と、 を含むことを特徴とする電磁接触器の可動接点機
構。[Scope of Claims] 1. A main circuit fixed contact 18 fixed to a base, a cross bar 66 that is slidably provided to the base and has a spring hole 72 that opens at the upper end surface, and a spring hole 72 of the cross bar 66. A spring receiver 74 consisting of a frame is inserted from one end into the cross bar 66 and the other end protrudes outward from the upper end surface of the cross bar 66, and a movable contact 70 facing the fixed contact is fixed to the frame of the spring receiver 74. A movable contact 68 is inserted into the frame of the spring receiver 74 and placed in contact with the upper end surface of the cross bar 66;
4 and the movable contact 68, which is a movable contact presser disposed between the spring receiver 74 and the movable contact 68.
a movable contact holder 80 made of a good thermal conductor, on which are formed engaging parts for each of the springs; One end inner surface of the receiver 74 and the cross bar 6
A movable contact mechanism for an electromagnetic contactor, comprising: a contact spring 76 compressed and installed between a stopper 78 fixed to a stopper 78;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12648481A JPS5828133A (en) | 1981-08-12 | 1981-08-12 | Movable contact mechanism for electromagnetic contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12648481A JPS5828133A (en) | 1981-08-12 | 1981-08-12 | Movable contact mechanism for electromagnetic contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5828133A JPS5828133A (en) | 1983-02-19 |
| JPH0113186B2 true JPH0113186B2 (en) | 1989-03-03 |
Family
ID=14936344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12648481A Granted JPS5828133A (en) | 1981-08-12 | 1981-08-12 | Movable contact mechanism for electromagnetic contactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5828133A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019083174A (en) * | 2017-10-31 | 2019-05-30 | オムロン株式会社 | Electromagnetic relay |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4420170Y1 (en) * | 1966-12-12 | 1969-08-29 | ||
| JPS4844513A (en) * | 1971-10-11 | 1973-06-26 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5013965U (en) * | 1973-06-01 | 1975-02-13 |
-
1981
- 1981-08-12 JP JP12648481A patent/JPS5828133A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4420170Y1 (en) * | 1966-12-12 | 1969-08-29 | ||
| JPS4844513A (en) * | 1971-10-11 | 1973-06-26 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5828133A (en) | 1983-02-19 |
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