JP2012212668A - Contact point device and electromagnetic switch - Google Patents

Contact point device and electromagnetic switch Download PDF

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JP2012212668A
JP2012212668A JP2012062620A JP2012062620A JP2012212668A JP 2012212668 A JP2012212668 A JP 2012212668A JP 2012062620 A JP2012062620 A JP 2012062620A JP 2012062620 A JP2012062620 A JP 2012062620A JP 2012212668 A JP2012212668 A JP 2012212668A
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contact
fixed
movable contact
movable
elastic member
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Riichi Uotome
利一 魚留
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Panasonic Corp
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To suppress the generation of an allophone caused by the fluctuation of a movable contact.SOLUTION: A contact point device A includes: a plurality of fixed contact points 11A; a movable contact 20 moved between a first position connecting to the plurality of fixed contact points 11A and a second position apart from the plurality of fixed contact points 11A; a movable axis 21 for moving the movable contact 20; a contact press spring 22 for elastically energizing the movable contact 20 toward the first position; a wall portion disposed on the circumference of the first and second positions; and an elastic member protruding toward the wall portion than the circumference of the movable contact 20. The electromagnetic switch includes the contact point device A and an electromagnet device B for moving the movable contact 20 through the movable axis 21.

Description

本発明は、接点装置、及び当該接点装置を備えた電磁開閉器に関する。   The present invention relates to a contact device and an electromagnetic switch provided with the contact device.

従来の電磁開閉器の一例を図１に示す。また、この種の電磁開閉器に類似するものとして、特許文献１に開示された電磁開閉装置がある。図１の例に示す電磁開閉器は、接点装置Ａと、電磁石装置Ｂと、ケース５とを備える。接点装置Ａは、複数（例えば２つ）の固定端子11と、可動接触子20とを有する。複数の固定端子11は、それぞれ当該複数の固定端子11の先端に複数（例えば２つ）の固定接点11Aを含む。電磁石装置Ｂは、可動接触子20が複数の固定接点11Aに接触されるか、複数の固定接点11Aから離されるように、電磁力を利用して可動接触子20を動かすように構成される。接点装置Ａ並びに電磁石装置Ｂはケース５内に収納される。   An example of a conventional electromagnetic switch is shown in FIG. Moreover, there exists an electromagnetic switch disclosed by patent document 1 as something similar to this kind of electromagnetic switch. The electromagnetic switch shown in the example of FIG. 1 includes a contact device A, an electromagnet device B, and a case 5. The contact device A includes a plurality of (for example, two) fixed terminals 11 and a movable contact 20. Each of the plurality of fixed terminals 11 includes a plurality (for example, two) of fixed contacts 11A at the tips of the plurality of fixed terminals 11, respectively. The electromagnet device B is configured to move the movable contact 20 using electromagnetic force so that the movable contact 20 is brought into contact with the plurality of fixed contacts 11A or separated from the plurality of fixed contacts 11A. The contact device A and the electromagnet device B are accommodated in the case 5.

接点装置Ａは、一面が開口した矩形箱形の封止容器10内に、複数の固定端子11の先端部分と可動接触子20を収納して構成されている。可動接触子20は、銅又は銅合金により長尺の矩形平板状に形成されている。可動接触子20の長手方向における中央部には挿通孔20Aが貫通し、この挿通孔20Aに可動軸21の端部（第１端部）が挿通されている。可動軸21の第１端部の先端(図１における上端)には挿通孔20Aよりも径の大きい外鍔21Aが設けられる。この外鍔21Aは、可動軸21から可動接触子20が抜けるのを防止している。なお、可動接触子20は、銅及び銅合金以外の導電性材料で形成される場合もある。   The contact device A is configured such that the distal end portions of a plurality of fixed terminals 11 and movable contacts 20 are housed in a rectangular box-shaped sealing container 10 having an open surface. The movable contact 20 is formed in a long rectangular flat plate shape from copper or a copper alloy. An insertion hole 20A passes through the center of the movable contact 20 in the longitudinal direction, and the end (first end) of the movable shaft 21 is inserted through the insertion hole 20A. An outer flange 21A having a diameter larger than that of the insertion hole 20A is provided at the tip of the first end of the movable shaft 21 (upper end in FIG. 1). The outer casing 21A prevents the movable contact 20 from coming off from the movable shaft 21. The movable contact 20 may be formed of a conductive material other than copper and a copper alloy.

封止容器10はセラミックのような耐熱性材料により一面が開口する箱状に形成され、その底の部分から一対の固定端子11の先端部分が挿通されている。可動接触子20は封止容器10内で一対の固定接点11Aに対向しており、コイルばねからなる接圧ばね22によって固定接点11Aに近付く向き(図１における上向き)に弾性付勢されている。   The sealing container 10 is formed in a box shape whose one surface is opened by a heat resistant material such as ceramic, and the tip portions of the pair of fixed terminals 11 are inserted from the bottom portion thereof. The movable contact 20 is opposed to the pair of fixed contacts 11A in the sealed container 10, and is elastically biased in a direction approaching the fixed contact 11A (upward in FIG. 1) by a contact pressure spring 22 made of a coil spring. .

固定鉄心30は磁性材料によって略円柱状に形成される。固定鉄心30の中央部の挿通孔30Aには可動軸21が挿通される。また、固定鉄心30は、貫通孔34Aを有する平状の固定板34の第１面側（上面側）から挿入されてその固定板34に固定されると同時に、固定板34の第２面（下面）に接合された、底を有する円筒部材33内に挿入される。   The fixed iron core 30 is formed in a substantially cylindrical shape by a magnetic material. The movable shaft 21 is inserted through the insertion hole 30A at the center of the fixed iron core 30. The fixed iron core 30 is inserted from the first surface side (upper surface side) of the flat fixing plate 34 having the through holes 34A and fixed to the fixing plate 34, and at the same time, the second surface ( It is inserted into a cylindrical member 33 having a bottom joined to the lower surface.

また可動軸21の第２端部(図１における下端部)には、固定鉄心30よりも円筒部材33の奥側に挿入される可動鉄心31が設けられている。可動鉄心31は磁性材料によって略円柱状に形成されている。可動軸21は可動鉄心31の中央部の挿通孔31Aに挿通され、可動鉄心31は可動軸21に固定されている。また可動鉄心31は、可動軸21が挿通され且つ固定鉄心30の挿通孔30A内に収納された復帰ばね32により、固定鉄心30から離れる向き(図１における下向き)に弾性付勢されている。   A movable iron core 31 is provided at the second end (lower end in FIG. 1) of the movable shaft 21 so as to be inserted further into the cylindrical member 33 than the fixed iron core 30. The movable iron core 31 is formed in a substantially cylindrical shape by a magnetic material. The movable shaft 21 is inserted into the insertion hole 31A in the center of the movable iron core 31, and the movable iron core 31 is fixed to the movable shaft 21. The movable core 31 is elastically biased in a direction away from the fixed core 30 (downward in FIG. 1) by a return spring 32 through which the movable shaft 21 is inserted and accommodated in the insertion hole 30A of the fixed core 30.

封止容器10と固定板34は、金属材料によって略円筒状に形成された接合部材35にそれぞれ気密に接合される。つまり、接合部材35の一端部(図１における上端部)が封止容器10の開口端部に気密接合される一方、接合部材35の他端部(図１における下端部)が固定板34の第１面に気密接合される。このように、接合部材35が封止容器10及び固定板34に気密接合されることにより、固定接点11A及び可動接触子20、固定鉄心30、可動鉄心31が収納される気密空間が形成され、この気密空間に水素を主体とするガスが気密封止される。   The sealing container 10 and the fixing plate 34 are each airtightly joined to a joining member 35 formed in a substantially cylindrical shape by a metal material. That is, one end portion (upper end portion in FIG. 1) of the joining member 35 is hermetically joined to the opening end portion of the sealing container 10, while the other end portion (lower end portion in FIG. 1) of the joining member 35 is the fixing plate 34. Airtightly joined to the first surface. In this manner, the sealing member 10 is hermetically joined to the sealing container 10 and the fixed plate 34, thereby forming an airtight space in which the fixed contact 11A and the movable contact 20, the fixed iron core 30, and the movable iron core 31 are stored. A gas mainly composed of hydrogen is hermetically sealed in this hermetic space.

一方、電磁石装置Ｂは、絶縁材料製のコイルボビン40と、コイルボビン40に巻設されたコイル41と、コイルボビン40及びコイル41の周囲を囲む継鉄42とを備える。継鉄42は、固定鉄心30及び可動鉄心31、固定板34とともに磁気回路を形成している。   On the other hand, the electromagnet device B includes a coil bobbin 40 made of an insulating material, a coil 41 wound around the coil bobbin 40, and a yoke 42 surrounding the coil bobbin 40 and the coil 41. The yoke 42 forms a magnetic circuit together with the fixed iron core 30, the movable iron core 31, and the fixed plate 34.

ケース５は、接点装置Ａ及び電磁石装置Ｂが載置される略平板状のベース50と、一面が開口した箱状に形成されて接点装置Ａ及び電磁石装置Ｂを覆う形でベース50に被着されるカバー51とで構成される。ベース50からは、一対のコイル端子43と一対の外部端子12とが外部に突出している。一対のコイル端子43の第１端は、コイル41の両端に接続され、一対のコイル端子43の第２端は外部電源と接続される。また一対の外部端子12の第１端はそれぞれ一対の固定端子11に接続され、一対の外部端子12の第２端は外部電路(図示せず)に接続される。   The case 5 is attached to the base 50 so as to cover the contact device A and the electromagnet device B, which is formed in a substantially flat plate-like base 50 on which the contact device A and the electromagnet device B are placed, and one surface is opened. The cover 51 is made up of. A pair of coil terminals 43 and a pair of external terminals 12 protrude from the base 50 to the outside. The first ends of the pair of coil terminals 43 are connected to both ends of the coil 41, and the second ends of the pair of coil terminals 43 are connected to an external power source. The first ends of the pair of external terminals 12 are connected to the pair of fixed terminals 11, respectively, and the second ends of the pair of external terminals 12 are connected to an external circuit (not shown).

以下、上述の従来例の動作について説明する。電磁石装置Ｂが励磁されていないときは、復帰ばね32のばね力によって可動接触子20が固定接点11Aから所定距離(接点ギャップ)だけ離れており、電磁開閉器がオフ状態にある。外部電源からコイル端子43に通電されて電磁石装置Ｂが励磁されると、固定鉄心30と可動鉄心31の間に電磁力(磁気吸引力)が作用して可動鉄心31が固定鉄心30に近付く向き(図１における上向き)に移動する。可動鉄心31の移動に伴って可動軸21が移動すると、接圧ばね22のばね力により、可動接触子20が可動軸21とともに移動して一対の固定接点11Aに当接する。その結果、一対の固定端子11同士が可動接触子20を介して導通することにより、電磁開閉器がオン状態となる。外部電源からコイル端子43への通電が停止されて電磁石装置Ｂが非励磁になると、主として復帰ばね32のばね力により、可動接触子20及び可動軸21、可動鉄心31が逆向き(図１における下向き)に移動して可動接触子20が固定接点11Aから離れることで電磁開閉器がオフ状態となる。   The operation of the above-described conventional example will be described below. When the electromagnet device B is not excited, the movable contact 20 is separated from the fixed contact 11A by a predetermined distance (contact gap) by the spring force of the return spring 32, and the electromagnetic switch is in the OFF state. When the coil terminal 43 is energized from the external power source and the electromagnet device B is excited, an electromagnetic force (magnetic attractive force) acts between the fixed iron core 30 and the movable iron core 31 so that the movable iron core 31 approaches the fixed iron core 30. Move upward (in FIG. 1 upward). When the movable shaft 21 moves along with the movement of the movable iron core 31, the movable contact 20 moves together with the movable shaft 21 by the spring force of the contact pressure spring 22, and contacts the pair of fixed contacts 11A. As a result, the pair of fixed terminals 11 are electrically connected to each other via the movable contact 20, whereby the electromagnetic switch is turned on. When the energization of the coil terminal 43 from the external power supply is stopped and the electromagnet device B is de-energized, the movable contact 20, the movable shaft 21, and the movable iron core 31 are reversed by the spring force of the return spring 32 (in FIG. 1). The electromagnetic switch is turned off by moving downward (moving downward) and moving the movable contact 20 away from the fixed contact 11A.

ところで、封止容器10の外側にはアーク消弧用部材６が配置されている。アーク消弧用部材６は、封止容器10の短手方向に対向する側壁の外側にそれぞれ配置された一対の永久磁石61と、これら一対の永久磁石61を磁気結合するヨーク60とで構成されている。而して、固定接点11Aから可動接触子20が離れるときにアークが生じた場合、アーク消弧用部材６が封止容器10内に形成している磁界の作用により、アークを引き伸ばして消弧することができる。   Incidentally, an arc extinguishing member 6 is disposed outside the sealing container 10. The arc extinguishing member 6 is composed of a pair of permanent magnets 61 respectively disposed on the outside of the side wall of the sealed container 10 facing in the short direction, and a yoke 60 that magnetically couples the pair of permanent magnets 61. ing. Thus, when an arc is generated when the movable contact 20 is separated from the fixed contact 11A, the arc is extinguished by the action of the magnetic field formed in the sealed container 10 by the arc extinguishing member 6. can do.

ところで、一般的に接点間が導通すると、固定接点11Aの表面と固定接点11Aに対向する可動接触子20の表面に、それぞれ互いに逆向きの電流が流れるため、可動接触子20と固定接点11Aとの間に電磁反発力が発生する。可動接触子20は可動軸21に固定されているわけではなく、接圧ばね22のばね力で可動軸21と連結されているに過ぎない。そのため、接圧ばね22の端部から不均一な押圧力を受けることで可動接触子20が傾いてしまい、可動接触子20の短手方向における中心が固定接点11Aの中心からずれて接触することがある。このような接触状態においては、前記電磁反発力が回転トルクとして可動接触子20に作用する。そして、一対の固定端子11間に過大な電流が流れたとき、若しくは一対の固定端子11間に流れる電流の大きさが急激に変化したとき、前記回転トルクの作用により、可動接触子20が可動軸21との連結部位を支点として揺動し、その揺動によって異音が発生するという問題があった。   By the way, in general, when the contacts are conducted, currents flowing in opposite directions flow on the surface of the fixed contact 11A and the surface of the movable contact 20 facing the fixed contact 11A, respectively, so that the movable contact 20 and the fixed contact 11A Electromagnetic repulsive force is generated during The movable contact 20 is not fixed to the movable shaft 21, but merely connected to the movable shaft 21 by the spring force of the contact pressure spring 22. Therefore, the movable contact 20 is tilted by receiving an uneven pressing force from the end of the contact pressure spring 22, and the center of the movable contact 20 in the short direction is shifted from the center of the fixed contact 11A. There is. In such a contact state, the electromagnetic repulsion force acts on the movable contact 20 as a rotational torque. When an excessive current flows between the pair of fixed terminals 11 or when the magnitude of the current flowing between the pair of fixed terminals 11 changes suddenly, the movable contact 20 is moved by the action of the rotational torque. There has been a problem that rocking occurs with the connecting portion with the shaft 21 as a fulcrum, and abnormal noise is generated by the rocking.

かかる異音の発生を抑制するため、固定接点及び可動接点を３個ずつ設けて可動接触子を３点で支持するようにした従来例が提案されている(例えば、特許文献２参照)。すなわち、可動接触子が３点で支持されることにより、２点で支持される場合と比較して可動接触子の揺動が抑えられるので、当該可動接触子の揺動に起因する異音の発生が抑制されるのである。   In order to suppress the occurrence of such abnormal noise, a conventional example has been proposed in which three fixed contacts and three movable contacts are provided to support the movable contact at three points (see, for example, Patent Document 2). That is, since the movable contact is supported at three points, the movement of the movable contact is suppressed compared to the case where the movable contact is supported at two points. Occurrence is suppressed.

特開２００７−２８７５２５号公報JP 2007-287525 A 特開２０１０−２５７９２３号公報JP 2010-257923 A

ところで、特許文献１や特許文献２に記載されている従来例では、コイルばねからなる接圧ばねが圧縮及び伸長されるとき、それぞれ逆向きの回転力が可動接触子に作用する。そのため、可動接触子が接圧ばねの回りに回転して封止容器の内壁等に接触する場合があった。そして、可動接触子が封止容器の内壁等に接触したままで固定接点に当接すると固定接点の接圧力が低下し、可動接触子の揺動が抑えられ難くなって異音の発生が抑制できなくなるという問題があった。   By the way, in the conventional examples described in Patent Document 1 and Patent Document 2, when a contact pressure spring made of a coil spring is compressed and extended, a rotational force in the opposite direction acts on the movable contact. Therefore, the movable contact may rotate around the contact pressure spring and contact the inner wall of the sealed container. If the movable contact is in contact with the inner wall of the sealed container and abuts against the fixed contact, the contact pressure of the fixed contact is reduced, and it is difficult to suppress the swing of the movable contact, thereby suppressing the generation of abnormal noise. There was a problem that it was impossible.

本発明は、上記課題に鑑みて為されたものであり、可動接触子の揺動に起因した異音の発生を抑制することを目的とする。   The present invention has been made in view of the above problems, and an object thereof is to suppress the generation of abnormal noise caused by the swinging of the movable contact.

本発明の接点装置は、複数の固定接点(11A)と、前記複数の固定接点(11A)に当接する第１の位置と前記複数の固定接点(11A)から離れる第２の位置との間で移動される可動接触子(20)と、前記可動接触子(20)を移動させるための可動軸(21)と、前記可動接触子(21)を前記第１の位置に向けて弾性付勢する接圧ばね(22)と、前記第１及び第２の位置の周囲に設けられた壁部(10A)と、前記可動接触子(20)の周縁よりも前記壁部(10A)に向けて突出される弾性部材(７)とを備える。望ましくは、弾性部材は、前記可動接触子よりも薄く形成されている。   The contact device of the present invention includes a plurality of fixed contacts (11A), a first position contacting the plurality of fixed contacts (11A), and a second position separated from the plurality of fixed contacts (11A). The movable contact (20) to be moved, the movable shaft (21) for moving the movable contact (20), and the movable contact (21) are elastically biased toward the first position. A contact pressure spring (22), a wall (10A) provided around the first and second positions, and protrudes toward the wall (10A) from the periphery of the movable contact (20) And an elastic member (7). Desirably, the elastic member is formed thinner than the movable contact.

一実施形態において、前記弾性部材(７)は前記壁部(10A)に接触している。   In one embodiment, the elastic member (7) is in contact with the wall (10A).

一実施形態において、前記弾性部材と前記壁部との間に隙間が設けられている。   In one embodiment, a gap is provided between the elastic member and the wall portion.

一実施形態において、前記弾性部材は、前記可動接触子が前記可動軸側を支点として揺動したときに前記壁部に接触するように、前記壁部から前記隙間の距離だけ離れている。   In one embodiment, the elastic member is separated from the wall by a distance of the gap so that the movable contact comes into contact with the wall when the movable contact swings around the movable shaft.

一実施形態において、前記弾性部材(７)は前記可動接触子(20)に固定される。   In one embodiment, the elastic member (7) is fixed to the movable contact (20).

一実施形態において、前記弾性部材（７）は、前記可動接触子(20)に固定される固定部(70)と、前記固定部(70)の両端からそれぞれ突設される複数の突部(71)とを備える。   In one embodiment, the elastic member (7) includes a fixed part (70) fixed to the movable contact (20), and a plurality of protrusions protruding from both ends of the fixed part (70) ( 71).

一実施形態において、前記可動接触子は矩形状である。前記固定部は、前記可動接触子の長手方向又は短手方向における両端にそれぞれ固定される第１固定部及び第２固定部を含む。前記複数の突部は、前記第１固定部及び第２固定部にそれぞれ一体に形成される第１突部及び第２突部を含む。   In one embodiment, the movable contact is rectangular. The fixed portion includes a first fixed portion and a second fixed portion that are fixed to both ends of the movable contact in the longitudinal direction or the short direction. The plurality of protrusions include a first protrusion and a second protrusion that are integrally formed with the first fixing portion and the second fixing portion, respectively.

一実施形態において、前記可動接触子は矩形状である。前記固定部は、前記可動接触子の長手方向又は短手方向に沿って形成され固定される。前記複数の突部は、前記固定部の両端にそれぞれ一体に形成される第１突部及び第２突部を含む。   In one embodiment, the movable contact is rectangular. The fixed portion is formed and fixed along a longitudinal direction or a short direction of the movable contact. The plurality of protrusions include a first protrusion and a second protrusion that are integrally formed at both ends of the fixed portion.

一実施形態において、前記弾性部材は前記可動接触子にかしめ固定される。   In one embodiment, the elastic member is fixed by caulking to the movable contact.

一実施形態において、前記弾性部材は金属板で形成される。   In one embodiment, the elastic member is formed of a metal plate.

一実施形態において、前記弾性部材は、前記可動接触子と前記接圧ばねとの間に介在される。   In one embodiment, the elastic member is interposed between the movable contact and the contact pressure spring.

一実施形態において、前記弾性部材は前記可動接触子に一体に形成される。   In one embodiment, the elastic member is integrally formed with the movable contact.

本発明の電磁開閉器は、前記何れかの接点装置と、電磁力を利用して前記可動軸を動かして前記可動接触子を前記第１の位置と前記第２の位置との間で移動させるように構成される電磁石装置とを備える。   The electromagnetic switch according to the present invention moves the movable contact between the first position and the second position by moving any one of the contact devices and the movable shaft using electromagnetic force. An electromagnet device configured as described above.

本発明の接点装置及び電磁開閉器は、可動接触子の揺動に起因した異音の発生を抑制することができるという効果がある。   The contact device and the electromagnetic switch of the present invention have an effect that it is possible to suppress the generation of abnormal noise caused by the swing of the movable contact.

従来例を示す断面図である。It is sectional drawing which shows a prior art example. 本発明の実施形態１による接点装置及び電磁開閉器の断面図である。It is sectional drawing of the contact apparatus and electromagnetic switch by Embodiment 1 of this invention. 図２の接点装置の概要断面図である。FIG. 3 is a schematic sectional view of the contact device of FIG. 2. 図２の接点装置における可動接触子と弾性部材を示す斜視図である。FIG. 3 is a perspective view showing a movable contact and an elastic member in the contact device of FIG. 2. 上記弾性部材の別例を示す斜視図である。It is a perspective view which shows another example of the said elastic member. 一修正実施形態を示す断面図である。It is sectional drawing which shows one correction embodiment. 一修正実施形態を示す斜視図である。It is a perspective view which shows one correction embodiment. 一修正実施形態を示す断面図である。It is sectional drawing which shows one correction embodiment. 一修正実施形態を示す断面図である。It is sectional drawing which shows one correction embodiment. 一修正実施形態を示す断面図である。It is sectional drawing which shows one correction embodiment. 一修正実施形態を示す斜視図である。It is a perspective view which shows one correction embodiment. 図１２Ａ〜１２Ｃは本発明の実施形態２による接点装置及び電磁開閉器の断面図である。12A to 12C are cross-sectional views of a contact device and an electromagnetic switch according to Embodiment 2 of the present invention. 図１２の接点装置における可動接触子と弾性部材を示す斜視図である。It is a perspective view which shows the movable contact and elastic member in the contact device of FIG. 図１２の弾性部材の別例を示す斜視図である。It is a perspective view which shows another example of the elastic member of FIG.

(実施形態１)
以下、本発明に係る接点装置並びに電磁開閉器の実施形態について、図２〜４を参照して詳細に説明する。ただし、本実施形態の接点装置Ａ及び電磁開閉器Ｂの基本構成は図１に示した従来例と共通であるから、若干の形状等の違いがあっても従来例と同一の機能を有する構成要素には同一の符号を付して適宜説明を省略する。 (Embodiment 1)
Hereinafter, embodiments of a contact device and an electromagnetic switch according to the present invention will be described in detail with reference to FIGS. However, since the basic configuration of the contact device A and the electromagnetic switch B of the present embodiment is the same as that of the conventional example shown in FIG. Elements are denoted by the same reference numerals and description thereof is omitted as appropriate.

本実施形態の接点装置Ａは、図１の従来例と同様に、複数（例えば２つ）の固定接点11A（後述の図６参照）と、複数の固定接点11Aに当接する第１の位置と複数の固定接点11Aから離れる第２の位置との間で移動される可動接触子20と、可動接触子20を移動させるための可動軸21と、可動接触子20を第１の位置に向けて弾性付勢する接圧ばね22とを含む。   As in the conventional example of FIG. 1, the contact device A of this embodiment includes a plurality of (for example, two) fixed contacts 11A (see FIG. 6 described later) and a first position that contacts the plurality of fixed contacts 11A. A movable contact 20 that is moved between a second position away from the plurality of fixed contacts 11A, a movable shaft 21 for moving the movable contact 20, and a movable contact 20 directed toward the first position. And a contact pressure spring 22 that is elastically biased.

電磁開閉器Ｂは、図１の従来例と同様に、電磁力を利用して可動軸21を動かして可動接触子20を上記第１の位置と第２の位置との間で移動させるように構成される。   As in the conventional example of FIG. 1, the electromagnetic switch B uses the electromagnetic force to move the movable shaft 21 so that the movable contact 20 is moved between the first position and the second position. Composed.

本実施形態では、可動軸21が第１の位置と第２の位置との間を移動する方向（図２では上下方向）を第１の方向という。また、第１の方向における第１の位置側（図２では上側）及び第２の位置側（図２では下側）を、それぞれ、第１の方向の第１側及び第２側という。   In the present embodiment, the direction in which the movable shaft 21 moves between the first position and the second position (vertical direction in FIG. 2) is referred to as the first direction. Further, the first position side (upper side in FIG. 2) and the second position side (lower side in FIG. 2) in the first direction are referred to as the first side and the second side in the first direction, respectively.

本実施形態の接点装置Ａは、図３に示すように、可動接触子20の周縁よりも壁部10A(封止容器10の内周側壁)に向けて突出される弾性部材７を備えている点に特徴がある。望ましくは、弾性部材７は、可動接触子20よりも薄く形成される。本実施形態では、壁部10Aは、第１及び第２の位置の周囲に設けられ、また、弾性部材７は、壁部10Aに接触するように可動接触子20に固定される。この弾性部材７は、可動接触子20に固定される固定部70と、固定部70の両端からそれぞれ突設される複数の突部71とを有し、弾性を有する矩形の金属板が曲げ加工されて形成される。ただし、弾性部材７を形成する材料は金属板に限定されず、例えば、ポリブチレンテレフタレートやポリカーボネートなどの耐熱温度が比較的に高い合成樹脂であっても構わない。   As shown in FIG. 3, the contact device A of the present embodiment includes an elastic member 7 that protrudes toward the wall 10 </ b> A (inner peripheral side wall of the sealing container 10) rather than the peripheral edge of the movable contact 20. There is a feature in the point. Desirably, the elastic member 7 is formed thinner than the movable contact 20. In the present embodiment, the wall 10A is provided around the first and second positions, and the elastic member 7 is fixed to the movable contact 20 so as to contact the wall 10A. The elastic member 7 has a fixed portion 70 fixed to the movable contact 20 and a plurality of protrusions 71 protruding from both ends of the fixed portion 70, and a rectangular metal plate having elasticity is bent. To be formed. However, the material forming the elastic member 7 is not limited to the metal plate, and may be a synthetic resin having a relatively high heat resistance temperature such as polybutylene terephthalate or polycarbonate.

図３及び４の例では、可動接触子20は、矩形状であり、複数（図では２つ）の固定接点11Aに面する位置にそれぞれ複数（２つ）の可動接点20Bを有している。固定部70は、可動接触子20の短手方向（幅方向）における（図では中央部の）両端にそれぞれ固定される第１固定部70及び第２固定部70を含む。また、複数の突部71は、第１固定部70及び第２固定部70にそれぞれ一体に形成される第１突部71及び第２突部71を含む。なお、この構造に限らず、弾性部材７は、図５に示す例のように形成されてもよい。図５の例では、固定部70は、可動接触子20の短手方向に沿って形成され固定されている。また、複数の突部71は、その固定部70の両端にそれぞれ一体に形成される第１突部71及び第２突部71を含んでいる。   3 and 4, the movable contact 20 has a rectangular shape, and has a plurality (two) of movable contacts 20B at positions facing the plurality (two in the figure) of the fixed contacts 11A. . The fixing portion 70 includes a first fixing portion 70 and a second fixing portion 70 that are respectively fixed at both ends (in the center in the drawing) in the short direction (width direction) of the movable contact 20. The plurality of protrusions 71 include a first protrusion 71 and a second protrusion 71 that are integrally formed with the first fixing part 70 and the second fixing part 70, respectively. In addition, not only this structure but the elastic member 7 may be formed like the example shown in FIG. In the example of FIG. 5, the fixed portion 70 is formed and fixed along the short direction of the movable contact 20. The plurality of protrusions 71 include a first protrusion 71 and a second protrusion 71 that are integrally formed at both ends of the fixed portion 70.

本実施形態では、弾性部材７は可動接触子20にかしめ固定される。図４の例では、弾性部材７の固定部70は、可動接触子20の長手方向中央部の両端側の第１の面（上面）にかしめ固定されている。なお、固定部70は、第１の方向の第１側における可動接触子20の第１の面に限らず、第１の方向の第２側における可動接触子20の第２の面（下面）にかしめ固定されてもよい。ただし、固定部70の固定方法はかしめ固定に限定されず、溶接や接着などの他の固定方法でもよい。図２及び３の例では、弾性部材７の両突部71は、可動接触子20の端手方向の両端から第１の方向の第２側に傾斜して（斜め下向きに）突出する。そして、弾性部材７の各突部71は、可動接触子20に固定された固定部70を支点として、先端が可動接触子20に近付く向きに撓むことが可能である。   In this embodiment, the elastic member 7 is caulked and fixed to the movable contact 20. In the example of FIG. 4, the fixed portion 70 of the elastic member 7 is fixed by caulking to the first surfaces (upper surfaces) on both ends of the longitudinal center portion of the movable contact 20. The fixed portion 70 is not limited to the first surface of the movable contact 20 on the first side in the first direction, but the second surface (lower surface) of the movable contact 20 on the second side in the first direction. It may be fixed by caulking. However, the fixing method of the fixing portion 70 is not limited to caulking and may be other fixing methods such as welding or adhesion. In the example of FIGS. 2 and 3, both protrusions 71 of the elastic member 7 protrude from the both ends of the movable contact 20 in the end direction inclining (obliquely downward) to the second side in the first direction. Each protrusion 71 of the elastic member 7 can be bent in a direction in which the tip approaches the movable contact 20 with the fixed portion 70 fixed to the movable contact 20 as a fulcrum.

図２〜４（特に図３）に示すように、可動接触子20が封止容器10内に収納された状態では、可動接触子20の短手方向の各端と壁部10Aとの間の空間に弾性部材７の突部71が配置される。   As shown in FIGS. 2 to 4 (particularly FIG. 3), in a state where the movable contact 20 is accommodated in the sealed container 10, the gap between each end of the movable contact 20 in the short direction and the wall portion 10A. The protrusion 71 of the elastic member 7 is disposed in the space.

以下、本実施形態の電磁開閉器の動作を説明する。電磁石装置Ｂが励磁されていないときは電磁開閉器がオフ状態にある。そして、電磁石装置Ｂが励磁されて、可動鉄心31が固定鉄心30に近付く向きとなる第１の方向の第１側(上側)に動くと、接圧ばね22のばね力によって可動接触子20が可動軸21とともに動いて一対の固定接点11Aに当接する。このとき、従来技術で説明したように接圧ばね22から可動接触子20に回転力が作用して可動接触子20が回転した場合、可動接触子20が壁部10Aに接触する前に弾性部材７の突部71が壁部10Aに接触する。そして、壁部10Aに接触した突部71が撓められると、突部71の弾性力によって可動接触子20に反対向きの回転力が作用する。すなわち、接圧ばね22から作用する回転力と逆向きの回転力が、一対の弾性部材７から可動接触子20に作用するため、従来例に比べて可動接触子20が壁部10Aに接触し難くなる。その結果、可動接触子20が壁部10Aに接触したままで固定接点11Aに当接して固定接点11Aの接圧力が低下することが生じ難いので、可動接触子20の揺動が抑えられて異音の発生を抑制することができる。また、可動接触子20の周縁を壁部10Aに直接接触させる場合に比べて、可動接触子20を第１の方向に好適に動かすことができる。更に、可動接触子20全体を突部71のように薄く形成する場合に比べて、可動接触子20自体が従来と同様の厚みを持つことができるので、固定接点間の電気抵抗が薄くされた可動接触子によって増大するのを防止することができる。   Hereinafter, the operation of the electromagnetic switch according to the present embodiment will be described. When the electromagnet device B is not excited, the electromagnetic switch is in an off state. When the electromagnet device B is excited and the movable iron core 31 moves to the first side (upper side) in the first direction in which the movable iron core 30 approaches the fixed iron core 30, the movable contact 20 is moved by the spring force of the contact pressure spring 22. It moves together with the movable shaft 21 and comes into contact with the pair of fixed contacts 11A. At this time, as described in the prior art, when the rotational force is applied to the movable contact 20 from the contact pressure spring 22 and the movable contact 20 rotates, the elastic member before the movable contact 20 contacts the wall 10A. 7 projections 71 come into contact with the wall 10A. Then, when the protrusion 71 in contact with the wall portion 10A is bent, the opposite rotational force acts on the movable contact 20 by the elastic force of the protrusion 71. That is, since a rotational force opposite to the rotational force acting from the contact pressure spring 22 acts on the movable contact 20 from the pair of elastic members 7, the movable contact 20 contacts the wall portion 10A as compared with the conventional example. It becomes difficult. As a result, it is difficult for the movable contact 20 to come into contact with the fixed contact 11A while being in contact with the wall portion 10A to reduce the contact pressure of the fixed contact 11A. Generation of sound can be suppressed. In addition, the movable contact 20 can be preferably moved in the first direction as compared with the case where the peripheral edge of the movable contact 20 is brought into direct contact with the wall portion 10A. Furthermore, compared to the case where the entire movable contact 20 is formed thin like the protrusion 71, the movable contact 20 itself can have the same thickness as the conventional one, so that the electrical resistance between the fixed contacts is reduced. An increase due to the movable contact can be prevented.

ここで、弾性部材７が金属板で形成されていれば、アークなどに起因した熱による変形や変質の可能性が低く、弾性部材７のばね性を安定させることができる。また、上記図５の例に示すように、第１突部71及び第２突部71がそれぞれ一つの固定部70の両端に一体に形成されている場合、可動接触子20に対する固定部70の固定箇所が減少するので、可動接触子20に対する弾性部材７の固定作業が簡素化できるという利点がある。   Here, if the elastic member 7 is formed of a metal plate, the possibility of deformation or alteration due to heat caused by an arc or the like is low, and the spring property of the elastic member 7 can be stabilized. Further, as shown in the example of FIG. 5, when the first protrusion 71 and the second protrusion 71 are integrally formed at both ends of one fixed part 70, the fixed part 70 with respect to the movable contact 20 Since the number of fixing points is reduced, there is an advantage that the fixing operation of the elastic member 7 to the movable contact 20 can be simplified.

一修正実施形態において、図６に示すように、弾性部材７の固定部は、可動接触子20の長手方向における両端にそれぞれ固定される第１固定部70及び第２固定部70を含む。弾性部材７の複数の突部は、第１固定部70及び第２固定部70にそれぞれ一体に形成される第１突部71及び第２突部71を含む。   In one modified embodiment, as shown in FIG. 6, the fixing portion of the elastic member 7 includes a first fixing portion 70 and a second fixing portion 70 that are respectively fixed to both ends in the longitudinal direction of the movable contact 20. The plurality of protrusions of the elastic member 7 include a first protrusion 71 and a second protrusion 71 that are integrally formed with the first fixing portion 70 and the second fixing portion 70, respectively.

図６の別例において、弾性部材７は、可動接触子20の第２の面（下面）に固定（例えばかしめ固定）される。この例では、弾性部材７の固定部70は、可動接触子20の長手方向又は短手方向に沿って形成され固定される。弾性部材７の複数の突部は、その固定部70の両端にそれぞれ一体に形成される第１突部71及び第２突部71を含む。   In another example of FIG. 6, the elastic member 7 is fixed (for example, fixed by caulking) to the second surface (lower surface) of the movable contact 20. In this example, the fixing portion 70 of the elastic member 7 is formed and fixed along the longitudinal direction or the lateral direction of the movable contact 20. The plurality of protrusions of the elastic member 7 include a first protrusion 71 and a second protrusion 71 that are integrally formed at both ends of the fixed portion 70.

一修正実施形態において、図７に示すように、接点装置は、３つの固定接点11Aと、可動接触子20とを含み、可動接触子20は、３つの固定接点11Aに面する位置にそれぞれ３つの可動接点20Bを有している。また、弾性部材７の固定部は、可動接触子20の長手方向又は短手方向（図７では長手方向）における両端にそれぞれ固定される第１固定部70及び第２固定部70を含む。弾性部材７の複数の突部は、第１固定部70及び第２固定部70にそれぞれ一体に形成される第１突部71及び第２突部71を含む。   In one modified embodiment, as shown in FIG. 7, the contact device includes three fixed contacts 11A and a movable contact 20, and each of the movable contacts 20 is located at a position facing the three fixed contacts 11A. There are two movable contacts 20B. Further, the fixing portion of the elastic member 7 includes a first fixing portion 70 and a second fixing portion 70 that are respectively fixed to both ends in the longitudinal direction or the short direction (longitudinal direction in FIG. 7) of the movable contact 20. The plurality of protrusions of the elastic member 7 include a first protrusion 71 and a second protrusion 71 that are integrally formed with the first fixing portion 70 and the second fixing portion 70, respectively.

一修正実施形態において、図８に示すように、弾性部材７と壁部10Aとの間に隙間Ｃが設けられている。加えて、弾性部材７は、可動接触子20が可動軸21側を支点として揺動したときに壁部10Aに接触するように、壁10A部から隙間Ｃの距離だけ離れていることが望ましい。   In one modified embodiment, as shown in FIG. 8, a gap C is provided between the elastic member 7 and the wall portion 10A. In addition, it is desirable that the elastic member 7 be separated from the wall 10A by the distance C so that the elastic contact 7 contacts the wall 10A when the movable contact 20 swings around the movable shaft 21 side.

一修正実施形態において、図９に示すように、弾性部材７は、可動接触子20と接圧ばね22との間に介在される。弾性部材７の固定部70は、可動接触子20の長手方向又は短手方向（図９の例では短手方向）に沿って形成され、可動接触子20と接圧ばね22とで固定される。弾性部材７の複数の突部は、固定部70の両端にそれぞれ一体に形成される第１突部71及び第２突部71を含む。望ましくは、弾性部材７は、可動軸21が挿入される貫通孔を持つ。   In one modified embodiment, the elastic member 7 is interposed between the movable contact 20 and the contact pressure spring 22 as shown in FIG. The fixed portion 70 of the elastic member 7 is formed along the longitudinal direction or the short direction (short direction in the example of FIG. 9) of the movable contact 20 and is fixed by the movable contact 20 and the contact pressure spring 22. . The plurality of protrusions of the elastic member 7 include a first protrusion 71 and a second protrusion 71 that are integrally formed at both ends of the fixing portion 70. Desirably, the elastic member 7 has a through hole into which the movable shaft 21 is inserted.

一修正実施形態において、図１０に示すように、弾性部材７は、可動接触子20に一体に形成される。例えば、弾性部材７は、可動接触子20の長手方向又は短手方向（図１０では短手方向）における両端からそれぞれ突出された第１突部71及び第２突部71を含む。   In one modified embodiment, the elastic member 7 is formed integrally with the movable contact 20 as shown in FIG. For example, the elastic member 7 includes a first protrusion 71 and a second protrusion 71 that protrude from both ends in the longitudinal direction or the short direction (short direction in FIG. 10) of the movable contact 20.

一修正実施形態において、図１１に示すように、可動接触子20は、可動軸21が挿入される挿通孔20Aを持たず、可動軸21と保持部材66を介して、電磁石装置Ｂによって駆動される。すなわち、本実施形態の接点装置は、可動接触子20の第１の面（上面）に対向して配置される第１ヨーク63と、可動接触子20の第２の面（下面）に対向して配置される第２ヨーク64と、第１のヨーク63を保持するＣ状の保持部材66とを更に含む。保持部材66の開口側は第１の方向の第１側（上側）に配置され、第１のヨーク63は、保持部材66の開口側に狭持される。一方、第２ヨーク64は、第１の方向に移動自在に保持部材66内に配置され、自己（第２ヨーク64）と保持部材66の中間部（第１の方向の第２側（下側）の部分）との間に介在された接圧ばね22によって第１の方向の第１側（上側）に付勢される。可動軸２１は、保持部材66の中間部の外面に連結される。この構成において、弾性部材７の固定部は、可動接触子20の長手方向における両端にそれぞれ固定される第１固定部70及び第２固定部70を含み、弾性部材７の複数の突部は、第１固定部70及び第２固定部70にそれぞれ一体に形成される第１突部71及び第２突部71を含む。   In one modified embodiment, as shown in FIG. 11, the movable contact 20 does not have an insertion hole 20A into which the movable shaft 21 is inserted, and is driven by the electromagnet device B through the movable shaft 21 and the holding member 66. The That is, the contact device of the present embodiment is opposed to the first yoke 63 disposed to face the first surface (upper surface) of the movable contact 20 and the second surface (lower surface) of the movable contact 20. And a C-shaped holding member 66 that holds the first yoke 63. The opening side of the holding member 66 is disposed on the first side (upper side) in the first direction, and the first yoke 63 is held on the opening side of the holding member 66. On the other hand, the second yoke 64 is disposed in the holding member 66 so as to be movable in the first direction, and is intermediate between the self (second yoke 64) and the holding member 66 (second side (lower side in the first direction)). ) Is biased to the first side (upper side) in the first direction by the contact pressure spring 22 interposed between the first and second portions. The movable shaft 21 is connected to the outer surface of the intermediate portion of the holding member 66. In this configuration, the fixing portion of the elastic member 7 includes a first fixing portion 70 and a second fixing portion 70 that are respectively fixed to both ends in the longitudinal direction of the movable contact 20, and the plurality of protrusions of the elastic member 7 include: A first protrusion 71 and a second protrusion 71 are formed integrally with the first fixing part 70 and the second fixing part 70, respectively.

(実施形態２)
本発明に係る接点装置A2及び電磁開閉器の実施形態について図１２及び１３を参照して詳細に説明する。本実施形態の接点装置A2が実施形態１の接点装置Ａ（ただし、図７を除く）と異なる点は、固定接点と可動接点が３点で当接(接触)する点である。 (Embodiment 2)
Embodiments of the contact device A2 and the electromagnetic switch according to the present invention will be described in detail with reference to FIGS. The contact device A2 of the present embodiment is different from the contact device A of Embodiment 1 (except for FIG. 7) in that the fixed contact and the movable contact come into contact (contact) at three points.

本実施形態の電磁開閉器は、接点装置A2並びに電磁石装置B2がケース100に収納されて構成される。   The electromagnetic switch according to the present embodiment is configured by housing a contact device A2 and an electromagnet device B2 in a case 100.

接点装置A2は、２つの固定接点板110，120や可動接触子130、接圧ばね140などで構成されている。２つの固定接点板110，120はケース100に固定されており、固定接点板110，120においてケース100の外に突出する部分がそれぞれ固定端子111，121となる。一方の固定接点板110においてケース100内に収納されている先端部に、１個の第１固定接点112がかしめ固定されている。また他方の固定接点120においてケース100内に収納されている先端部に、２個の第２固定接点122がかしめ固定されている。ただし、第１固定接点112と２個の第２固定接点122とは、それぞれの中心が三角形の３つの頂点に相当する位置に配置されている(図１２Ｂ参照)。   The contact device A2 includes two fixed contact plates 110 and 120, a movable contact 130, a contact pressure spring 140, and the like. The two fixed contact plates 110 and 120 are fixed to the case 100, and portions of the fixed contact plates 110 and 120 that protrude outside the case 100 become fixed terminals 111 and 121, respectively. One fixed contact plate 110 has one first fixed contact 112 fixed by caulking to a tip portion housed in the case 100. In addition, two second fixed contacts 122 are caulked and fixed to the tip of the other fixed contact 120 housed in the case 100. However, the first fixed contact 112 and the two second fixed contacts 122 are arranged at positions corresponding to the three vertices of the triangle (see FIG. 12B).

ケース100内において、第１固定接点112及び第２固定接点122と対向する位置に可動接触子130が配置されている。可動接触子130は銅又は銅合金により平板状に形成される。ただし、可動接触子20は、銅及び銅合金以外の導電性材料で形成されても構わない。また第１固定接点112に対して当接するか離れるように設けられる１個の第１可動接点131と、２つの第２固定接点122に対してそれぞれ当接するか離れるように設けられる２個の第２可動接点132とが可動接触子130に固定（例えばかしめ固定）されている。さらに、可動接触子130は、コイルばねからなる接圧ばね140によって固定接点板110，120に近付く向きとなる第１の方向の第１側(図１２Ａでは下側)に弾性付勢されている。   In the case 100, the movable contact 130 is disposed at a position facing the first fixed contact 112 and the second fixed contact 122. The movable contact 130 is formed in a flat plate shape from copper or a copper alloy. However, the movable contact 20 may be formed of a conductive material other than copper and a copper alloy. In addition, one first movable contact 131 provided so as to abut against or separate from the first fixed contact 112 and two second movable contacts provided so as to abut against or separate from the two second fixed contacts 122 respectively. Two movable contacts 132 are fixed to the movable contact 130 (for example, fixed by caulking). Further, the movable contact 130 is elastically urged to the first side (the lower side in FIG. 12A) in the first direction in the direction approaching the fixed contact plates 110 and 120 by the contact pressure spring 140 formed of a coil spring. .

電磁石装置B2は、コイル200、コイル端子201、固定鉄心202、可動鉄心203、継鉄(図示せず)、復帰ばね205、プレート206、可動軸207などで構成されている。コイル200は、コイルボビンにコイル巻線が巻回されて構成されており、コイル巻線の両端にそれぞれコイル端子201が接続されている。継鉄はコイル200の周囲に配置されている。固定鉄心202はコイル200内の一端部（図１２Ａでは下端部）に固定されている。コイル200内において、固定鉄心202に対向する位置にプレート206を介して可動鉄心203が取り付けられている。可動鉄心203は、その中心を貫通するように棒状の可動軸207に固定されており、可動軸207と一体にコイル200内を第１の方向（上下方向）に移動可能である。また、固定鉄心202と可動鉄心203との間にコイルばねからなる復帰ばね205が圧縮状態で収納されており、復帰ばね205のばね力によって、可動鉄心203が固定鉄心202から離れる向きとなる第１の方向の第２側(上側)に弾性付勢されている。円柱形状の連結部材208が可動軸207の先端部（上端部）に固定されている。   The electromagnet device B2 includes a coil 200, a coil terminal 201, a fixed iron core 202, a movable iron core 203, a yoke (not shown), a return spring 205, a plate 206, a movable shaft 207, and the like. The coil 200 is configured by winding a coil winding around a coil bobbin, and a coil terminal 201 is connected to each end of the coil winding. The yoke is arranged around the coil 200. Fixed iron core 202 is fixed to one end (the lower end in FIG. 12A) in coil 200. In the coil 200, a movable iron core 203 is attached via a plate 206 at a position facing the fixed iron core 202. The movable iron core 203 is fixed to a rod-shaped movable shaft 207 so as to penetrate the center thereof, and can move in the coil 200 in the first direction (vertical direction) integrally with the movable shaft 207. A return spring 205 made of a coil spring is housed in a compressed state between the fixed iron core 202 and the movable iron core 203, and the movable iron core 203 is oriented away from the fixed iron core 202 by the spring force of the return spring 205. 1 is elastically biased toward the second side (upper side) in the direction of 1. A columnar connecting member 208 is fixed to the tip (upper end) of the movable shaft 207.

次に、本実施形態の電磁開閉器の動作を説明する。まず、電磁石装置B2が励磁されていない状態では、図１２Ａに示すように復帰ばね205のばね力で可動鉄心203、可動軸207が第１の方向の第２側（上側）に付勢される。そして、可動軸207が上側に移動すれば、連結部材208に押圧された可動接触子130が接圧ばね140のばね力に抗して上側に移動し、固定接点112，122と可動接点131，132が開離してオフ状態となる。一方、コイル端子201に電圧が印加されて電磁石装置B2が励磁されると、可動鉄心203が固定鉄心202に吸引されるので、可動軸207と連結部材208が第１の方向の第１側（図１２Ａでは下側）に移動する。可動軸207が下側に移動すると、接圧ばね140のばね力によって可動接触子130が下側に移動するので、固定接点112，122が可動接点131，132に当接してオン状態となる。なお、オン状態では連結部材208の先端が可動接触子130から離れる。   Next, the operation of the electromagnetic switch according to this embodiment will be described. First, in a state where the electromagnet device B2 is not excited, the movable iron core 203 and the movable shaft 207 are urged to the second side (upper side) in the first direction by the spring force of the return spring 205 as shown in FIG. 12A. . When the movable shaft 207 moves upward, the movable contact 130 pressed by the connecting member 208 moves upward against the spring force of the contact pressure spring 140, and the fixed contacts 112, 122 and the movable contacts 131, 132 is opened and turned off. On the other hand, when a voltage is applied to the coil terminal 201 and the electromagnet device B2 is excited, the movable iron core 203 is attracted to the fixed iron core 202, so that the movable shaft 207 and the connecting member 208 are in the first direction in the first direction ( It moves to the lower side in FIG. 12A. When the movable shaft 207 moves downward, the movable contact 130 moves downward due to the spring force of the contact pressure spring 140, so that the fixed contacts 112, 122 abut against the movable contacts 131, 132 and are turned on. In the ON state, the tip of the connecting member 208 is separated from the movable contact 130.

ここで、オン状態においては３個の固定接点112，122と３個の可動接点131，132とが接触導通するので、２つの固定接点板110，120に対して、可動接触子130が３点で支持され
ることになる。 Here, since the three fixed contacts 112 and 122 and the three movable contacts 131 and 132 are in contact with each other in the on state, the movable contact 130 has three points with respect to the two fixed contact plates 110 and 120. Will be supported.

一方、コイル端子201への電圧印加が停止されて電磁石装置B2が非励磁になると、可動鉄心203が固定鉄心202に吸引されなくなるので、復帰ばね205のばね力で可動軸207と連結部材208が第１の方向の第２側（図１２Ａでは上側）に移動する。可動軸207が上側に移動すれば、連結部材208に押圧された可動接触子130が接圧ばね140のばね力に抗して上側に移動し、固定接点112，122と可動接点131，132が開離してオフ状態に戻る。   On the other hand, when the application of voltage to the coil terminal 201 is stopped and the electromagnet device B2 is de-excited, the movable iron core 203 is not attracted to the fixed iron core 202, so that the movable shaft 207 and the connecting member 208 are moved by the spring force of the return spring 205. Move to the second side in the first direction (upper side in FIG. 12A). When the movable shaft 207 moves upward, the movable contact 130 pressed by the connecting member 208 moves upward against the spring force of the contact pressure spring 140, and the fixed contacts 112, 122 and the movable contacts 131, 132 are moved. Open and return to the off state.

本実施形態においても、実施形態１と同様に可動接触子130の周縁よりも壁部101に向けて突出される弾性部材150が設けられている。望ましくは、弾性部材150は、可動接触子130よりも薄く形成される。この弾性部材150は、図１３に示すように可動接触子130に固定される固定部151と、固定部151の両端からそれぞれ突設される複数の突部152とを有し、弾性を有する矩形の金属板が曲げ加工されて形成される。ただし、弾性部材150を形成する材料は金属板に限定されず、例えば、ポリブチレンテレフタレートやポリカーボネートなどの耐熱温度が比較的に高い合成樹脂であっても構わない。   Also in this embodiment, the elastic member 150 which protrudes toward the wall part 101 rather than the periphery of the movable contact 130 similarly to Embodiment 1 is provided. Desirably, the elastic member 150 is formed thinner than the movable contact 130. As shown in FIG. 13, the elastic member 150 has a fixed portion 151 fixed to the movable contact 130 and a plurality of protrusions 152 protruding from both ends of the fixed portion 151, and is an elastic rectangle. The metal plate is formed by bending. However, the material forming the elastic member 150 is not limited to a metal plate, and may be a synthetic resin having a relatively high heat resistance temperature such as polybutylene terephthalate or polycarbonate.

図１３の例では、弾性部材150の固定部は、可動接触子130の短手方向における（図では中央部の）両端にそれぞれ固定される第１固定部151及び第２固定部151を含む。また、弾性部材150の複数の突部は、第１固定部151及び第２固定部151にそれぞれ一体に形成される第１突部152及び第２突部152を含む。なお、この構造に限らず、弾性部材150は、図１４に示す例のように形成されてもよい。図１４の例では、固定部151は、可動接触子130の短手方向に沿って形成され固定されている。また、複数の突部152は、その固定部151の両端にそれぞれ一体に形成される第１突部152及び第２突部152を含んでいる。   In the example of FIG. 13, the fixed portion of the elastic member 150 includes a first fixed portion 151 and a second fixed portion 151 that are fixed to both ends (in the center in the drawing) of the movable contact 130 in the short direction. The plurality of protrusions of the elastic member 150 includes a first protrusion 152 and a second protrusion 152 that are integrally formed with the first fixing portion 151 and the second fixing portion 151, respectively. Note that the elastic member 150 is not limited to this structure, and may be formed as in the example shown in FIG. In the example of FIG. 14, the fixed portion 151 is formed and fixed along the short direction of the movable contact 130. The plurality of protrusions 152 include a first protrusion 152 and a second protrusion 152 that are integrally formed at both ends of the fixed portion 151, respectively.

本実施形態では、弾性部材150は可動接触子130にかしめ固定される。図１３の例では、弾性部材150の固定部151は、可動接触子130の長手方向中央部の両端側の第１の面（図１２Ａの例では下面、図１３の例では上面）にかしめ固定されている。なお、固定部70は、第１の方向の第１側における可動接触子130の第１の面に限らず、第１の方向の第２側における可動接触子130の第２の面（図１２Ａの例では上面）にかしめ固定されてもよい。ただし、固定部151の固定方法はかしめ固定に限定されず、溶接や接着などの他の固定方法でもよい。図１３の例では、弾性部材150の両突部152は、可動接触子130の短手方向の両端から第１の方向の第２側に傾斜して（図１３の例では斜め下向きに）突出する。そして、弾性部材150の各突部152は、可動接触子130に固定された固定部151を支点として、先端が可動接触子130に近付く向きに撓むことが可能である。   In the present embodiment, the elastic member 150 is caulked and fixed to the movable contact 130. In the example of FIG. 13, the fixing portion 151 of the elastic member 150 is fixed by caulking to the first surfaces (the lower surface in the example of FIG. 12A and the upper surface in the example of FIG. 13) at both ends of the central portion in the longitudinal direction of the movable contact 130. Has been. The fixed portion 70 is not limited to the first surface of the movable contact 130 on the first side in the first direction, but the second surface of the movable contact 130 on the second side in the first direction (FIG. 12A). In the example shown in FIG. However, the fixing method of the fixing portion 151 is not limited to caulking and may be other fixing methods such as welding or adhesion. In the example of FIG. 13, both protrusions 152 of the elastic member 150 protrude from the both ends in the short direction of the movable contact 130 toward the second side in the first direction (in the example of FIG. 13, obliquely downward). To do. Each protrusion 152 of the elastic member 150 can be bent in a direction in which the tip approaches the movable contact 130 with the fixed portion 151 fixed to the movable contact 130 as a fulcrum.

壁部101は、ケース100内における接点装置A2の収納空間に設けられ、可動接触子130の移動経路を挟む第２の方向（図１２Ａでは前後方向）に対向する位置にそれぞれ配置されている。この第２の方向は、上記第１の方向と直交する。   The wall portion 101 is provided in the housing space of the contact device A2 in the case 100, and is disposed at a position facing the second direction (the front-rear direction in FIG. 12A) across the moving path of the movable contact 130. The second direction is orthogonal to the first direction.

而して、電磁開閉器がオフ状態からオン状態に切り替わる際、可動接触子130が壁部101に接触する前に弾性部材150の突部152が壁部101に接触して撓み、突部152の弾性力によって可動接触子130に回転力が作用する。すなわち、実施形態１で説明したように、接圧ばね140から作用する回転力と逆向きの回転力が、一対の弾性部材150から可動接触子130に作用するため、従来例に比べて可動接触子130が壁部101に接触し難くなる。その結果、可動接触子130が壁部101に接触したままで可動接点131，132が固定接点112，122に当接して接圧力が低下することが生じ難いので、可動接触子130の揺動が抑えられて異音の発生を抑制することができる。ただし、ケース100の内壁が突部152と接触して撓ませるように構成されていれば、あえてケース100内に壁部101が設けられる必要は無い。   Thus, when the electromagnetic switch is switched from the off state to the on state, the protrusion 152 of the elastic member 150 contacts the wall 101 and bends before the movable contact 130 contacts the wall 101, and the protrusion 152 The rotational force acts on the movable contact 130 by the elastic force. That is, as described in the first embodiment, a rotational force opposite to the rotational force acting from the contact pressure spring 140 acts on the movable contact 130 from the pair of elastic members 150. It becomes difficult for the child 130 to contact the wall portion 101. As a result, it is difficult for the movable contacts 130 and 132 to come into contact with the fixed contacts 112 and 122 while the movable contact 130 is in contact with the wall portion 101, so that the contact pressure does not decrease. The generation of abnormal noise can be suppressed. However, as long as the inner wall of the case 100 is configured to be bent in contact with the protrusion 152, the wall 101 need not be provided in the case 100.

ここで、弾性部材150が金属板で形成されていれば、アークなどに起因した熱による変形や変質の可能性が低く、弾性部材150のばね性を安定させることができる。また、上記図１４の例に示すように、第１突部152及び第２突部152がそれぞれ一つの固定部151の両端に一体に形成されている場合、可動接触子130に対する固定部151の固定箇所が減少するので、可動接触子130に対する弾性部材150の固定作業が簡素化できるという利点がある。   Here, if the elastic member 150 is formed of a metal plate, the possibility of deformation or alteration due to heat caused by an arc or the like is low, and the spring property of the elastic member 150 can be stabilized. Further, as shown in the example of FIG. 14, when the first protrusion 152 and the second protrusion 152 are integrally formed on both ends of one fixed portion 151, the fixed portion 151 with respect to the movable contact 130 Since the number of fixing points is reduced, there is an advantage that the fixing operation of the elastic member 150 to the movable contact 130 can be simplified.

Claims (14)

複数の固定接点と、
前記複数の固定接点に当接する第１の位置と前記複数の固定接点から離れる第２の位置との間で移動される可動接触子と、
前記可動接触子を移動させるための可動軸と、
前記可動接触子を前記第１の位置に向けて弾性付勢する接圧ばねと、
前記第１及び第２の位置の周囲に設けられた壁部と、
前記可動接触子の周縁よりも前記壁部に向けて突出される弾性部材と
を備えることを特徴とする接点装置。 Multiple fixed contacts;
A movable contact moved between a first position contacting the plurality of fixed contacts and a second position separating from the plurality of fixed contacts;
A movable shaft for moving the movable contact;
A contact pressure spring that elastically biases the movable contact toward the first position;
Walls provided around the first and second positions;
A contact device comprising: an elastic member protruding toward the wall portion from the periphery of the movable contact. 前記弾性部材は前記壁部に接触していることを特徴とする請求項１記載の接点装置。   The contact device according to claim 1, wherein the elastic member is in contact with the wall portion. 前記弾性部材と前記壁部との間に隙間が設けられていることを特徴とする請求項１記載の接点装置。   The contact device according to claim 1, wherein a gap is provided between the elastic member and the wall portion. 前記弾性部材は、前記可動接触子が前記可動軸側を支点として揺動したときに前記壁部に接触するように、前記壁部から前記隙間の距離だけ離れていることを特徴とする請求項３記載の接点装置。   The elastic member is separated from the wall portion by a distance of the gap so that the movable contact contacts the wall portion when the movable contact swings around the movable shaft side as a fulcrum. 3. The contact device according to 3. 前記弾性部材は前記可動接触子に固定されることを特徴とする請求項１〜４の何れか１項に記載の接点装置。   The contact device according to claim 1, wherein the elastic member is fixed to the movable contact. 前記弾性部材は、
前記可動接触子に固定される固定部と、
前記固定部の両端からそれぞれ突設される複数の突部と
を備えることを特徴とする請求項５記載の接点装置。 The elastic member is
A fixed portion fixed to the movable contact;
The contact device according to claim 5, further comprising a plurality of protrusions protruding from both ends of the fixed portion. 前記可動接触子は矩形状であり、
前記固定部は、前記可動接触子の長手方向又は短手方向における両端にそれぞれ固定される第１固定部及び第２固定部を含み、
前記複数の突部は、前記第１固定部及び第２固定部にそれぞれ一体に形成される第１突部及び第２突部を含む
ことを特徴とする請求項６記載の接点装置。 The movable contact is rectangular,
The fixed portion includes a first fixed portion and a second fixed portion that are fixed to both ends in the longitudinal direction or the short direction of the movable contact,
The contact device according to claim 6, wherein the plurality of protrusions include a first protrusion and a second protrusion that are integrally formed with the first fixing portion and the second fixing portion, respectively. 前記可動接触子は矩形状であり、
前記固定部は、前記可動接触子の長手方向又は短手方向に沿って形成され固定され、
前記複数の突部は、前記固定部の両端にそれぞれ一体に形成される第１突部及び第２突部を含む
ことを特徴とする請求項６記載の接点装置。 The movable contact is rectangular,
The fixed part is formed and fixed along the longitudinal direction or the short direction of the movable contact,
The contact device according to claim 6, wherein the plurality of protrusions include a first protrusion and a second protrusion that are integrally formed at both ends of the fixed part. 前記弾性部材は前記可動接触子にかしめ固定されることを特徴とする請求項５記載の接点装置。   The contact device according to claim 5, wherein the elastic member is fixed by caulking to the movable contact. 前記弾性部材は金属板で形成されることを特徴とする請求項５記載の接点装置。   The contact device according to claim 5, wherein the elastic member is formed of a metal plate. 前記弾性部材は、前記可動接触子と前記接圧ばねとの間に介在されることを特徴とする請求項１〜４の何れか１項に記載の接点装置。   The contact device according to claim 1, wherein the elastic member is interposed between the movable contact and the contact pressure spring. 前記弾性部材は前記可動接触子に一体に形成されることを特徴とする請求項１〜４の何れか１項に記載の接点装置。   The contact device according to claim 1, wherein the elastic member is integrally formed with the movable contact. 前記弾性部材は、前記可動接触子よりも薄く形成されていることを特徴とする請求項１〜４の何れか１項に記載の接点装置。   The contact device according to claim 1, wherein the elastic member is formed thinner than the movable contact. 請求項１〜１３の何れか１項に記載の接点装置と、電磁力を利用して前記可動軸を動かして前記可動接触子を前記第１の位置と前記第２の位置との間で移動させるように構成される電磁石装置とを備えることを特徴とする電磁開閉器。   The contact device according to claim 1, and the movable shaft is moved between the first position and the second position by moving the movable shaft using electromagnetic force. An electromagnetic switch comprising: an electromagnet device configured to cause the electromagnetic switch to operate.
JP2012062620A 2011-03-22 2012-03-19 Contact point device and electromagnetic switch Ceased JP2012212668A (en)

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KR20150107601A (en) 2014-03-14 2015-09-23 후지 덴키 기기세이교 가부시끼가이샤 Electromagnetic contactor
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CN108711537B (en) * 2018-08-09 2024-03-19 苏州安来强电子科技有限公司 Movable contact structure and movable contact system of direct current contactor

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
KR20150107601A (en) 2014-03-14 2015-09-23 후지 덴키 기기세이교 가부시끼가이샤 Electromagnetic contactor
JP2019133843A (en) * 2018-01-31 2019-08-08 アンデン株式会社 Electromagnetic relay
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WO2023090016A1 (en) * 2021-11-18 2023-05-25 オムロン株式会社 Electromagnetic relay
DE102022104711A1 (en) 2022-02-28 2023-08-31 Tdk Electronics Ag switching device

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