JP2009230919A - Contact device - Google Patents

Contact device Download PDF

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Publication number
JP2009230919A
JP2009230919A JP2008072257A JP2008072257A JP2009230919A JP 2009230919 A JP2009230919 A JP 2009230919A JP 2008072257 A JP2008072257 A JP 2008072257A JP 2008072257 A JP2008072257 A JP 2008072257A JP 2009230919 A JP2009230919 A JP 2009230919A
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Japan
Prior art keywords
fixed
movable
contact
elastic member
insertion hole
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JP2008072257A
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Japanese (ja)
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JP4702380B2 (en
Inventor
Tokuyu Ito
督裕 伊東
Motoharu Kubo
基治 久保
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Priority to JP2008072257A priority Critical patent/JP4702380B2/en
Application filed by Panasonic Electric Works Co Ltd filed Critical Panasonic Electric Works Co Ltd
Priority to CN2009801095190A priority patent/CN101978453B/en
Priority to EP14194011.4A priority patent/EP2860747B1/en
Priority to EP16168530.0A priority patent/EP3089189B1/en
Priority to KR1020107023364A priority patent/KR101190566B1/en
Priority to US12/933,135 priority patent/US8395463B2/en
Priority to EP18172814.8A priority patent/EP3385972B1/en
Priority to EP09722741.7A priority patent/EP2267746B1/en
Priority to CA2718970A priority patent/CA2718970C/en
Priority to CN201310156418.7A priority patent/CN103258689B/en
Priority to PCT/JP2009/055054 priority patent/WO2009116493A1/en
Publication of JP2009230919A publication Critical patent/JP2009230919A/en
Application granted granted Critical
Publication of JP4702380B2 publication Critical patent/JP4702380B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a contact device allowing easy attachment of a shock absorber to a flange of a fixed core. <P>SOLUTION: The contact device includes the shock absorber 5 abutting on an end of the fixed core 30 opposed to a movable contact 20 to absorb shocks exerted when the movable core 31 strikes the fixed core 30. The shock absorber 5 includes a first elastic member 50 covering the upper surface of the flange 30C and having a first through-hole 50a formed through it to insert a movable shaft 21 through the hole and a second elastic member 51 covering the lower surface of the flange 30c and having a second through-hole 51a formed through it to insert the fixed core 30 through the hole and outer peripheral edges of the first and second elastic members 50, 51 are integrated with each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、パワー負荷用のリレーや電磁開閉器等に好適な接点装置に関する。   The present invention relates to a contact device suitable for a power load relay, an electromagnetic switch or the like.

従来から、初期状態において接点オフとなる所謂常開型の接点装置が知られており、例えば特許文献１に開示されている。以下、この種の接点装置の従来例について図面を用いて説明する。尚、以下の説明では、図７における上下を上下方向と定めるものとする。この従来例は、図７に示すように、固定接点１１ａを有する一対の固定端子１１、及び固定接点１１ａに接離する一対の可動接点２０ａを有する可動接触子２０を封止容器１０に収容して成る接点ブロックＡと、固定接点１１ａに可動接点２０ａが接離するように可動接触子２０を駆動する駆動ブロックＢとを備えて成る。   Conventionally, a so-called normally-open contact device in which the contact is turned off in an initial state is known, and is disclosed in, for example, Patent Document 1. Hereinafter, a conventional example of this type of contact device will be described with reference to the drawings. In the following description, the vertical direction in FIG. 7 is defined as the vertical direction. In this conventional example, as shown in FIG. 7, a pair of fixed terminals 11 having a fixed contact 11 a and a movable contact 20 having a pair of movable contacts 20 a contacting and separating from the fixed contact 11 a are accommodated in a sealing container 10. And a drive block B that drives the movable contact 20 so that the movable contact 20a is brought into and out of contact with the fixed contact 11a.

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、その上底部の２箇所に貫通孔（図示せず）が設けられている。これら貫通孔には、例えば銅系材料等により略有底円筒状に形成された固定端子１１の一部が挿通される。固定端子１１の下端部には固定接点１１ａが固着され、上端部には鍔部１１ｂが設けられている。また、固定端子１１は、その上端部が封止容器１０から突出した状態で、鍔部１１ｂの近傍が封止容器１０にロウ付け等により気密接合される。   The sealing container 10 is formed in a box shape whose one surface is opened by a heat resistant material such as ceramic, and through holes (not shown) are provided at two locations on the upper bottom thereof. A part of the fixed terminal 11 formed in a substantially bottomed cylindrical shape with, for example, a copper-based material or the like is inserted into these through holes. A fixed contact 11a is fixed to the lower end portion of the fixed terminal 11, and a flange portion 11b is provided at the upper end portion. In addition, the fixed terminal 11 is hermetically joined to the sealing container 10 by brazing or the like in the vicinity of the flange 11b with the upper end portion protruding from the sealing container 10.

固定端子１１の下方には、可動接触子２０が配設されている。可動接触子２０は、例えば銅系材料等により平板状に形成され、固定接点１１ａと接離する間隔を有して両端部に可動接点２０ａが固着されている。可動接触子２０の中央部には挿通孔２０ｂが設けてあり、この挿通孔２０ｂに絶縁材料により略丸棒状に形成された可動軸２１の上端部が挿通され且つかしめられることで可動軸２１に可動接触子２０が結合されている。尚、可動接触子２０は後述する接圧ばね２２によって可動接点２０ａが固定接点１１ａに接触する向き（上向き）に弾性付勢されている。   A movable contact 20 is disposed below the fixed terminal 11. The movable contact 20 is formed, for example, in a flat plate shape by using a copper-based material or the like, and the movable contact 20a is fixed to both ends with a distance to and away from the fixed contact 11a. An insertion hole 20b is provided in the central portion of the movable contact 20, and the upper end of the movable shaft 21 formed in a substantially round bar shape by an insulating material is inserted into the insertion hole 20b and caulked, whereby the movable shaft 21 is squeezed. A movable contact 20 is coupled. The movable contact 20 is elastically biased in a direction (upward) in which the movable contact 20a contacts the fixed contact 11a by a contact pressure spring 22 described later.

可動軸２１の上部には、その全周を覆う形で固定鉄心３０が配設されている。固定鉄心３０は略円柱状に形成され、その断面略中央には可動軸２１を挿通する挿通孔３０ａが軸方向に沿って設けられている。この固定鉄心３０の上端部には径方向に突出する鍔部３０ｃが一体に形成されており、該鍔部３０ｃが後述する固定板３４の上面に固着される。固定鉄心３０の下端部は、固定板３４の挿通孔３４ａに挿通されて後述する可動鉄心３１の上端部と対向するように配設されており、挿通孔３０ａの内径よりも大きい内径を有した凹部３０ｂが設けられている。また、固定鉄心３０の鍔部３０ｃには、固定鉄心３０が外れるのを防止するためのキャップ３６が覆設されている。キャップ３６は、板状の金属部材を加工することで扁平な有底円筒状に形成されており、底板の中央に設けられた挿通孔３６ａに可動軸２１が挿通された状態で固定板３４の上面に接合されている。   A fixed iron core 30 is disposed on the upper portion of the movable shaft 21 so as to cover the entire circumference thereof. The fixed iron core 30 is formed in a substantially columnar shape, and an insertion hole 30a through which the movable shaft 21 is inserted is provided along the axial direction at the center of the cross section. A flange portion 30c protruding in the radial direction is formed integrally with the upper end portion of the fixed iron core 30, and the flange portion 30c is fixed to the upper surface of a fixed plate 34 to be described later. The lower end portion of the fixed iron core 30 is inserted into the insertion hole 34a of the fixed plate 34 so as to face the upper end portion of the movable iron core 31 described later, and has an inner diameter larger than the inner diameter of the insertion hole 30a. A recess 30b is provided. Further, a cap 36 for preventing the fixed iron core 30 from coming off is covered with the flange portion 30 c of the fixed iron core 30. The cap 36 is formed into a flat bottomed cylindrical shape by processing a plate-like metal member, and the cap 36 is inserted into the insertion hole 36a provided at the center of the bottom plate with the movable shaft 21 inserted therethrough. Bonded to the top surface.

可動軸２１の下部には、その全周を覆う形で可動鉄心３１が配設されている。可動鉄心３１は略円柱状に形成され、その断面略中央には可動軸２１が挿通される挿通孔３１ａが軸方向に沿って設けられている。この可動鉄心３１は、その上端部が固定鉄心３０の下端部と対向しており、下端部には挿通孔３１ａの内径よりも大きい内径を有した凹部３１ｂが設けられている。また、この可動鉄心３１は、その外周面が後述する有底筒部３３の内周面に摺動する摺動面となっている。   A movable iron core 31 is disposed below the movable shaft 21 so as to cover the entire circumference. The movable iron core 31 is formed in a substantially columnar shape, and an insertion hole 31a through which the movable shaft 21 is inserted is provided along the axial direction at the approximate center of the cross section. The movable core 31 has an upper end facing the lower end of the fixed core 30, and a recess 31 b having an inner diameter larger than the inner diameter of the insertion hole 31 a is provided at the lower end. Further, the movable iron core 31 is a sliding surface whose outer peripheral surface slides on an inner peripheral surface of a bottomed cylindrical portion 33 described later.

固定鉄心３０の凹部３０ｂには、復帰ばね３２が配設されている。復帰ばね３２は、固定接点１１ａから可動接点２０ａが離れる方向へ可動鉄心３１を弾性付勢するものであって、凹部３０ｂの内径よりも若干小さい内径を有した圧縮コイルばねから成る。復帰ばね３２は、固定鉄心３０の挿通孔３０ａに挿通された可動軸２１に外挿されて、その下端部が可動鉄心３１の上端部に固定されるとともに上端部が凹部３０ｂの上面に固定される。有底筒部３３は、非磁性材料により有底円筒状に形成され、その下底部側に可動鉄心３１を収納するとともに、その可動鉄心３１と対向する固定鉄心３０を開口部側に収納する。   A return spring 32 is disposed in the recess 30 b of the fixed iron core 30. The return spring 32 elastically biases the movable iron core 31 in the direction in which the movable contact 20a is separated from the fixed contact 11a, and is composed of a compression coil spring having an inner diameter slightly smaller than the inner diameter of the recess 30b. The return spring 32 is extrapolated to the movable shaft 21 inserted through the insertion hole 30a of the fixed iron core 30, its lower end is fixed to the upper end of the movable iron core 31, and its upper end is fixed to the upper surface of the recess 30b. The The bottomed cylindrical part 33 is formed in a bottomed cylindrical shape with a nonmagnetic material, and houses the movable iron core 31 on the lower bottom part side, and houses the fixed iron core 30 facing the movable iron core 31 on the opening part side.

固定板３４は、鉄等の磁性金属材料により略矩形状に形成され、後述する継鉄４２に連結されて固定鉄心３０及び可動鉄心３１と共に磁気回路を形成する。この固定板３４は、前述したように、固定鉄心３０の上端部を固着する前に挿通する挿通孔３４ａが略中央に設けられ、挿通孔３４ａの近傍が有底筒部３３に気密接合される。固定板３４と可動接触子２０との間には、圧縮コイルばねから成る接圧ばね２２が可動軸２１に外挿された状態で配設されており、可動接点２０ａが固定接点１１ａに接触する向き（上向き）に可動接触子２０を弾性付勢している。   The fixed plate 34 is formed in a substantially rectangular shape by a magnetic metal material such as iron, and is connected to a yoke 42 described later to form a magnetic circuit together with the fixed core 30 and the movable core 31. As described above, the fixing plate 34 is provided with the insertion hole 34a through which the upper end of the fixed iron core 30 is fixed before being fixed, and the vicinity of the insertion hole 34a is hermetically joined to the bottomed cylindrical portion 33. . A contact pressure spring 22 made of a compression coil spring is disposed between the fixed plate 34 and the movable contact 20 in a state of being extrapolated to the movable shaft 21, and the movable contact 20a contacts the fixed contact 11a. The movable contact 20 is elastically biased in the direction (upward).

封止容器１０と固定板３４との間には接合部材３５が配設される。接合部材３５は、金属材料により略円筒状に形成され、上端部側の開口の内周縁が封止容器１０の内周面よりも内側に位置するようになっている。接合部材３５は、その上端部が封止容器１０の開口端部に気密接合されるとともに下端部が固定板３４に気密接合される。また、接合部材３５は筒部途中が全周に亘って屈曲されており、上端部側の開口断面よりも下端部側の開口断面の方が大きく形成されている。そして、この接合部材３５は、前述した封止容器１０及び固定板３４に気密接合されることによって固定接点１１ａ及び可動接点２０ａ並びに固定鉄心３０及び可動鉄心３１を収容するための気密空間を形成し、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。   A joining member 35 is disposed between the sealing container 10 and the fixed plate 34. The joining member 35 is formed in a substantially cylindrical shape from a metal material, and the inner peripheral edge of the opening on the upper end side is located inside the inner peripheral surface of the sealing container 10. An upper end portion of the joining member 35 is hermetically joined to the opening end portion of the sealing container 10, and a lower end portion thereof is hermetically joined to the fixing plate 34. Further, the joining member 35 is bent along the entire circumference of the cylindrical portion, and the opening cross section on the lower end side is formed larger than the opening cross section on the upper end side. The joining member 35 is hermetically joined to the sealing container 10 and the fixed plate 34 described above, thereby forming an airtight space for accommodating the fixed contact 11a, the movable contact 20a, the fixed iron core 30, and the movable iron core 31. The gas mainly composed of hydrogen is hermetically sealed in this hermetic space.

次に、駆動ブロックＢについて説明する。この駆動ブロックＢは、コイルボビン４０にコイル巻線が巻回されて成るコイル４１と、コイル４１を外囲する継鉄４２とを備える。継鉄４２は、中央片及び両対向片で略Ｕ字状に形成され、その中央片に有底筒部３３を挿通させる貫通孔４２ａが設けられている。この継鉄４２は、固定鉄心３０及び可動鉄心３１並びに固定板３４と共に磁気回路を成す。   Next, the drive block B will be described. The drive block B includes a coil 41 formed by winding a coil winding around a coil bobbin 40 and a yoke 42 surrounding the coil 41. The yoke 42 is formed in a substantially U shape with a central piece and both opposing pieces, and a through hole 42a through which the bottomed cylindrical portion 33 is inserted is provided in the central piece. The yoke 42 forms a magnetic circuit together with the fixed iron core 30, the movable iron core 31, and the fixed plate 34.

以下、上述の従来例の動作について説明する。コイル４１を励磁する前は、可動接点２０ａが固定接点１１ａと所定の距離（接点ギャップ）を有して対向している。コイル４１を励磁すると、可動鉄心３１が固定鉄心３０に吸引されて移動することにより、可動鉄心３１の移動に伴って可動軸２１が駆動されて可動接点２０ａは接点ギャップを徐々に小さくしてゆき、やがて固定接点１１ａに当接する。コイル４１の励磁が切られると、可動接触子２０は主として復帰ばね３２の付勢力によって復帰して逆向きに変位し、可動接点２０ａが固定接点１１ａから開離するとともに、可動鉄心３１も所定の距離だけ復帰して元の状態に戻る。   The operation of the above-described conventional example will be described below. Before the coil 41 is excited, the movable contact 20a faces the fixed contact 11a with a predetermined distance (contact gap). When the coil 41 is excited, the movable iron core 31 is attracted and moved by the fixed iron core 30, so that the movable shaft 21 is driven as the movable iron core 31 moves, and the movable contact 20 a gradually reduces the contact gap. Eventually, it comes into contact with the fixed contact 11a. When the excitation of the coil 41 is cut off, the movable contact 20 is returned mainly by the urging force of the return spring 32 and displaced in the reverse direction, the movable contact 20a is separated from the fixed contact 11a, and the movable iron core 31 is also predetermined. Return only the distance and return to the original state.

ここで、固定鉄心３０の鍔部３０ｃとキャップ３６との間には衝撃吸収体５が配設されている。衝撃吸収体５は、シリコンゴムのような弾性材料から略円盤状に形成され、中央に貫通した挿通孔５ａに可動軸２１が挿通され且つ鍔部３０ｃの上面とキャップ３６の下面とに当接した状態で鍔部３０ｃとキャップ３６との間に挟持される。而して、コイル４１の励磁によって移動した可動鉄心３１が固定鉄心３０と当たることで発生する振動（衝撃）が衝撃吸収体５に吸収されるため、固定板３４や継鉄４２等の部材への振動の伝搬を抑制することができて動作音を低減できる。
特開２００６−３１０２４８号公報 Here, the shock absorber 5 is disposed between the flange 30 c of the fixed iron core 30 and the cap 36. The shock absorber 5 is formed in an approximately disc shape from an elastic material such as silicon rubber, and the movable shaft 21 is inserted into the insertion hole 5a penetrating through the center and is in contact with the upper surface of the flange portion 30c and the lower surface of the cap 36. In this state, it is sandwiched between the collar 30c and the cap 36. Thus, vibration (impact) generated when the movable iron core 31 moved by the excitation of the coil 41 hits the fixed iron core 30 is absorbed by the shock absorber 5, so that it can be transferred to members such as the fixed plate 34 and the yoke 42. It is possible to suppress the propagation of vibrations and reduce operating noise.
JP 2006-310248 A

ところで、衝撃吸収体５は、上記従来例のように固定鉄心３０の鍔部３０ｃ上面に設けるだけではなく、鍔部３０ｃの下面にも設けて鍔部３０ｃを衝撃吸収体５で挟持するように配設するのが望ましい。即ち、図８（ａ），（ｂ）に示すように、鍔部３０ｃの上面を覆うとともに可動軸２１を挿通させる第１の挿通孔５０ａが貫設された第１の弾性部材５０と、鍔部３０ｃの下面を覆うとともに固定鉄心３０を挿通させる第２の挿通孔５１ａが貫設された第２の弾性部材５１とから衝撃吸収体５を構成するのが望ましい。   By the way, the shock absorber 5 is provided not only on the upper surface of the flange portion 30c of the fixed iron core 30 as in the above-described conventional example, but also provided on the lower surface of the flange portion 30c so that the flange portion 30c is sandwiched between the shock absorbers 5. It is desirable to arrange. That is, as shown in FIGS. 8A and 8B, the first elastic member 50 that covers the upper surface of the flange portion 30c and through which the first insertion hole 50a through which the movable shaft 21 is inserted, It is preferable that the shock absorber 5 is constituted by the second elastic member 51 that covers the lower surface of the portion 30c and through which the second insertion hole 51a through which the fixed iron core 30 is inserted.

しかしながら、この場合には第１の弾性部材５０を鍔部３０ｃの上面に取り付ける作業と、第２の挿通孔５１ａに固定鉄心３０を挿通させて第２の弾性部材５１を鍔部３０ｃの下面に取り付ける作業とを必要とするため、衝撃吸収体５を固定鉄心３０に容易に取り付けることができないという問題があった。   However, in this case, the work of attaching the first elastic member 50 to the upper surface of the flange portion 30c and the second elastic member 51 on the lower surface of the flange portion 30c by inserting the fixed core 30 into the second insertion hole 51a. Since the attachment work is required, there is a problem that the shock absorber 5 cannot be easily attached to the fixed iron core 30.

本発明は、上記の点に鑑みて為されたもので、衝撃吸収体を固定鉄心の鍔部に容易に取り付けることのできる接点装置を提供することを目的とする。   The present invention has been made in view of the above points, and an object of the present invention is to provide a contact device capable of easily attaching an impact absorber to a flange portion of a fixed iron core.

請求項１の発明は、上記目的を達成するために、固定接点部を有する固定端子、及び固定接点部に接離する可動接点部を有する可動接触子を備えた接点ブロックと、可動接触子が一端側に固定される可動軸と、可動軸の他端側に固定された可動鉄心と、可動軸が外挿されて可動鉄心と対向する固定鉄心と、固定鉄心と可動鉄心との間に磁気吸引力を発生させて可動鉄心を固定鉄心に当たる向きに移動させる駆動ブロックと、可動接触子に対向する固定鉄心の端部に当接して可動鉄心が固定鉄心に当たる際の衝撃を吸収する衝撃吸収体とを備え、固定鉄心には、可動接触子と対向する一端部において径方向に突出する鍔部が設けられ、衝撃吸収体は、鍔部の厚み方向における一端側を覆うとともに可動軸を挿通させる第１の挿通孔が貫設された第１の弾性部材と、鍔部の厚み方向における他端側を覆うとともに固定鉄心を挿通させる第２の挿通孔が貫設された第２の弾性部材とから成り、第１の弾性部材及び第２の弾性部材の外周縁が互いに一体に形成されたことを特徴とする。   In order to achieve the above object, the invention according to claim 1 includes a fixed terminal having a fixed contact portion, a contact block including a movable contact portion having a movable contact portion contacting and separating from the fixed contact portion, and a movable contact A movable shaft fixed to one end side, a movable iron core fixed to the other end of the movable shaft, a fixed iron core with the movable shaft extrapolated to face the movable iron core, and a magnet between the fixed iron core and the movable iron core A drive block that generates a suction force to move the movable iron core in a direction that hits the fixed iron core, and an impact absorber that abuts against the end of the fixed iron core that faces the movable contact and absorbs the shock when the movable iron hits the fixed iron core The fixed iron core is provided with a flange that protrudes in the radial direction at one end facing the movable contact, and the shock absorber covers one end in the thickness direction of the flange and inserts the movable shaft. The first insertion hole was penetrated 1 and a second elastic member that covers the other end side in the thickness direction of the collar portion and that has a second insertion hole through which the fixed core is inserted. The first elastic member and the second elastic member The outer peripheral edges of the elastic members are integrally formed with each other.

請求項２の発明は、請求項１の発明において、第１の挿通孔又は第２の挿通孔の少なくとも何れか１つには、挿通孔と連通する切り欠きが設けられたことを特徴とする。   The invention of claim 2 is characterized in that, in the invention of claim 1, at least one of the first insertion hole and the second insertion hole is provided with a notch communicating with the insertion hole. .

請求項３の発明は、請求項１又は２の発明において、第１の弾性部材及び第２の弾性部材の外面には、鍔部の厚み方向に突出する一乃至複数の凸部若しくは鍔部の厚み方向に窪んだ一乃至複数の凹部が設けられたことを特徴とする。   According to a third aspect of the present invention, in the first or second aspect of the present invention, the outer surfaces of the first elastic member and the second elastic member have one or a plurality of convex portions or ridge portions protruding in the thickness direction of the ridge portion. One or a plurality of recesses recessed in the thickness direction are provided.

請求項４の発明は、請求項１の発明において、第１の弾性部材の外面には、鍔部の厚み方向に突出するとともに第１の挿通孔の全周を覆う第１の周壁部が設けられ、第２の弾性部材の外面には、鍔部の厚み方向に突出するとともに第２の挿通孔の全周を覆う第２の周壁部が設けられたことを特徴とする。   According to a fourth aspect of the present invention, in the first aspect of the present invention, the outer surface of the first elastic member is provided with a first peripheral wall portion that protrudes in the thickness direction of the flange portion and covers the entire circumference of the first insertion hole. The second elastic member is characterized in that a second peripheral wall portion is provided on the outer surface of the second elastic member so as to protrude in the thickness direction of the collar portion and cover the entire circumference of the second insertion hole.

請求項１の発明によれば、第１の弾性部材と第２の弾性部材とが一体に形成された衝撃吸収体を固定鉄心の鍔部に取り付けるので、従来例のように第１の弾性部材と第２の弾性部材とを個別に固定鉄心の鍔部に取り付ける必要が無く、したがって衝撃吸収体を固定鉄心の鍔部に容易に取り付けることができる。また、個々では掴み難い第１の弾性部材及び第２の弾性部材が一体に形成されているので容易に掴むことができる。   According to the first aspect of the invention, since the shock absorber in which the first elastic member and the second elastic member are integrally formed is attached to the flange portion of the fixed iron core, the first elastic member is provided as in the conventional example. And the second elastic member do not need to be individually attached to the flange portion of the fixed core, and therefore the shock absorber can be easily attached to the flange portion of the fixed iron core. In addition, since the first elastic member and the second elastic member that are difficult to grasp individually are formed integrally, they can be easily grasped.

請求項２の発明によれば、挿通孔と連通して一部を切り欠くことで固定鉄心の鍔部に衝撃吸収体を取り付ける際の抵抗を小さくすることができ、衝撃吸収体を固定鉄心の鍔部に更に容易に取り付けることができる。また、切り欠きを設けることで材料の使用量を削減することができ、製造コストを低減することができる。   According to the second aspect of the present invention, the resistance at the time of attaching the shock absorber to the flange portion of the fixed core can be reduced by communicating with the insertion hole and cutting out a part of the fixed core. It can be more easily attached to the buttocks. Further, the use of the material can be reduced by providing the notch, and the manufacturing cost can be reduced.

請求項３の発明によれば、各弾性部材の外面に凸部又は凹部を設けることで衝撃吸収体と当接する部材との接触面積を小さくすることができ、外部に伝搬する振動が小さくなって接点装置の動作音をより低減することができる。   According to the invention of claim 3, by providing a convex portion or a concave portion on the outer surface of each elastic member, it is possible to reduce the contact area with the member that comes into contact with the shock absorber, and the vibration that propagates to the outside is reduced. The operation sound of the contact device can be further reduced.

請求項４の発明によれば、各挿通孔の全周を覆う凸部を設けることで固定接点部と可動接点部との接離に伴って生じる消耗粉等の異物が装置内部に侵入するのを防止することができ、接点装置の開閉動作の信頼性を向上することができる。   According to the invention of claim 4, foreign matters such as consumable powder generated due to the contact and separation between the fixed contact portion and the movable contact portion enter the inside of the apparatus by providing the convex portion covering the entire circumference of each insertion hole. Can be prevented, and the reliability of the switching operation of the contact device can be improved.

（実施形態１）
以下、本発明に係る接点装置の実施形態１について図面を用いて説明する。但し、本実施形態の基本的な構成は従来例と共通であるので、共通する部位には同一の番号を付して説明を省略するものとする。また、以下の説明では、図１（ａ）における上下を上下方向と定めるものとする。本実施形態は、従来例と同様に、固定接点１１ａを有する固定端子１１、及び固定接点１１ａに接離する可動接点２０ａを有する可動接触子２０を備えた接点ブロックＡと、可動接触子２０が上端部に固定される可動軸２１と、可動軸２１の下端部に固定された可動鉄心３１と、可動軸２１が外挿されて可動鉄心３１と対向するとともに上端部に径方向に突出する鍔部３０ｃが設けられた固定鉄心３０と、固定鉄心３０と可動鉄心３１との間に磁気吸引力を発生させて可動鉄心３１を固定鉄心３０に当たる向きに移動させる駆動ブロックＢとを備え（図７参照）、鍔部３０ｃには、図１（ａ），（ｂ）に示す衝撃吸収体５が取り付けられている。 (Embodiment 1)
Hereinafter, a contact device according to a first embodiment of the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the conventional example, common portions are denoted by the same reference numerals and description thereof is omitted. In the following description, the top and bottom in FIG. In the present embodiment, as in the conventional example, a contact block A including a fixed terminal 11 having a fixed contact 11a and a movable contact 20 having a movable contact 20a contacting and separating from the fixed contact 11a, and a movable contact 20 are provided. A movable shaft 21 fixed to the upper end portion, a movable iron core 31 fixed to the lower end portion of the movable shaft 21, and the movable shaft 21 is extrapolated so as to face the movable iron core 31 and project radially from the upper end portion. And a drive block B that generates a magnetic attractive force between the fixed iron core 30 and the movable iron core 31 to move the movable iron core 31 in a direction that contacts the fixed iron core 30 (FIG. 7). The shock absorber 5 shown in FIGS. 1A and 1B is attached to the collar portion 30c.

尚、本実施形態では、固定端子１１の下端部に固着された接点材料から成る固定接点１１ａが固定接点部となっているが、固定接点１１ａを設けずに固定端子１１の下端部を固定接点部としても構わない。また、本実施形態では、可動接触子２０において固定接点１１ａが接離する部位に固着された接点材料から成る可動接点２０ａが可動接点部となっているが、当該部位に可動接点２０ａを固着せずに可動接点部としても構わない。   In this embodiment, the fixed contact 11a made of a contact material fixed to the lower end portion of the fixed terminal 11 is the fixed contact portion. However, the lower end portion of the fixed terminal 11 is fixed to the fixed contact without providing the fixed contact 11a. It does not matter as part. In this embodiment, the movable contact 20a made of a contact material fixed to a portion where the fixed contact 11a contacts and separates in the movable contact 20 is a movable contact portion, but the movable contact 20a is fixed to the portion. Alternatively, the movable contact portion may be used.

衝撃吸収体５は、例えばシリコンゴム等の弾性材料から成り、図１（ａ），（ｂ）に示すように、鍔部３０ｃの上面を覆うとともに可動軸２１を挿通させる第１の挿通孔５０ａが貫設された第１の弾性部材５０と、鍔部３０ｃの下面を覆うとともに固定鉄心３０を挿通させる第２の挿通孔５１ａが貫設された第２の弾性部材５１とから構成され、第１の弾性部材５０及び第２の弾性部材５１の外周縁が互いに一体に形成されている。尚、第１の弾性部材５０及び第２の弾性部材５１は、その間に鍔部３０ｃの厚み寸法と略等しい厚み寸法の空間が形成されるように一体に形成される。   The shock absorber 5 is made of an elastic material such as silicon rubber, for example, and as shown in FIGS. 1A and 1B, the first insertion hole 50a that covers the upper surface of the flange 30c and through which the movable shaft 21 is inserted. And a second elastic member 51 that covers the lower surface of the flange portion 30c and has a second insertion hole 51a through which the fixed iron core 30 is inserted. The outer peripheral edges of the first elastic member 50 and the second elastic member 51 are integrally formed with each other. In addition, the 1st elastic member 50 and the 2nd elastic member 51 are integrally formed so that the space of the thickness dimension substantially equal to the thickness dimension of the collar part 30c may be formed in the meantime.

衝撃吸収体５は、図２（ａ），（ｂ）に示すように、第２の挿通孔５１ａの径寸法が鍔部３０ｃの径寸法よりも大きくなるように第２の挿通孔５１ａの周縁を径方向に伸ばして広げ、鍔部３０ｃを第２の挿通孔５１ａに挿通させて第１の弾性部材５０と第２の弾性部材５１とで鍔部３０ｃを挟持するように取り付けられる。このように、第１の弾性部材５０と第２の弾性部材５１とが一体に形成された衝撃吸収体５を鍔部３０ｃに取り付けるので、従来例のように第１の弾性部材５０と第２の弾性部材５１とを個別に鍔部３０ｃに取り付ける必要が無く、したがって衝撃吸収体５を鍔部３０ｃに容易に取り付けることができる。また、個々では掴み難い第１の弾性部材５０及び第２の弾性部材５１が一体に形成されているので、衝撃吸収体５を容易に掴むことができる。   As shown in FIGS. 2A and 2B, the shock absorber 5 has a peripheral edge of the second insertion hole 51a so that the diameter of the second insertion hole 51a is larger than the diameter of the flange 30c. Are extended so as to extend in the radial direction, and the flange portion 30c is inserted into the second insertion hole 51a so that the flange portion 30c is sandwiched between the first elastic member 50 and the second elastic member 51. Thus, since the shock absorber 5 in which the first elastic member 50 and the second elastic member 51 are integrally formed is attached to the collar portion 30c, the first elastic member 50 and the second elastic member 50 are attached to the flange portion 30c. There is no need to attach the elastic member 51 separately to the flange 30c, and therefore the shock absorber 5 can be easily attached to the flange 30c. Further, since the first elastic member 50 and the second elastic member 51 that are difficult to grasp individually are integrally formed, the shock absorber 5 can be easily grasped.

尚、図３（ａ），（ｂ）に示すように、第２の弾性部材５１に第２の挿通孔５１ａと連通する断面略半円形状の切り欠き５１ｂを設けても構わない。この場合、第２の挿通孔５１ａの周縁を径方向に伸ばして広げ易くなる、即ち、衝撃吸収体５を鍔部３０ｃに取り付ける際の抵抗を小さくすることができ、衝撃吸収体５を鍔部３０ｃに更に容易に取り付けることができる。また、切り欠き５１ｂを設けることで材料の使用量を削減することができ、製造コストを低減することができる。勿論、切り欠き５１ｂの形状は上記のものに限定される必要は無く、例えば図３（ｃ），（ｄ）に示すように、切り欠き５１ｂを衝撃吸収体５の側面まで延設しても構わない。また、図３（ｅ），（ｆ）に示すように、第２の弾性部材５１に断面略矩形状の切り欠き５１ｂを設けるとともに、第１の弾性部材５０にも第１の挿通孔５０ａと連通する断面略矩形状の切り欠き５０ｂを設け、各切り欠き５０ｂ，５１ｂを互いに連通させるようにしても構わない。   Note that, as shown in FIGS. 3A and 3B, the second elastic member 51 may be provided with a notch 51b having a substantially semicircular cross section that communicates with the second insertion hole 51a. In this case, the periphery of the second insertion hole 51a can be easily extended by extending in the radial direction, that is, the resistance when the shock absorber 5 is attached to the flange portion 30c can be reduced. It can be more easily attached to 30c. Further, by providing the notch 51b, the amount of material used can be reduced, and the manufacturing cost can be reduced. Of course, the shape of the notch 51b is not necessarily limited to the above-described one. For example, as shown in FIGS. 3C and 3D, the notch 51b may be extended to the side surface of the shock absorber 5. I do not care. 3 (e) and 3 (f), the second elastic member 51 is provided with a notch 51b having a substantially rectangular cross section, and the first elastic member 50 is also provided with a first insertion hole 50a. A cutout 50b having a substantially rectangular cross section may be provided so that the cutouts 50b and 51b communicate with each other.

（実施形態２）
以下、本発明に係る接点装置の実施形態２について図面を用いて説明する。但し、本実施形態の基本的な構成は実施形態１と共通であるので、共通する部位には同一の番号を付して説明を省略するものとする。また、以下の説明では、図４（ａ）における上下を上下方向と定めるものとする。本実施形態は、図４（ａ）〜（ｃ）に示すように、第１の弾性部材５０の上面に上方向に突出する複数（図示では４つ）の凸部５０ｃを周方向に亘って突設するとともに、第２の弾性部材５１の下面に下方向に突出する複数（図示では４つ）の凸部５１ｃを周方向に亘って突設している。 (Embodiment 2)
Hereinafter, a second embodiment of the contact device according to the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted. In the following description, the vertical direction in FIG. 4A is defined as the vertical direction. In the present embodiment, as shown in FIGS. 4A to 4C, a plurality (four in the drawing) of convex portions 50 c projecting upward on the upper surface of the first elastic member 50 extends in the circumferential direction. In addition to projecting, a plurality (four in the figure) of convex portions 51 c projecting downward from the lower surface of the second elastic member 51 are projected in the circumferential direction.

ここで、衝撃吸収体５を鍔部３０ｃに取り付けた状態において、図４（ｄ）に示すように、第１の弾性部材５０は凸部５０ｃの先端部のみがキャップ３６と当接し、第２の弾性部材５１は凸部５１ｃの先端部のみが固定板３４と当接するので、実施形態１のように第１の弾性部材５０及び第２の弾性部材５１が各々キャップ３６及び固定板３４と全面で当接する場合と比較して接触面積を小さくすることができる。而して、可動鉄心３１が固定鉄心３０と当たることで発生する振動が各凸部５０ｃ，５１ｃのみを介してキャップ３６及び固定板３４に伝搬するので、外部に伝搬する振動が小さくなって接点装置の動作音をより低減することができる。   Here, in the state in which the shock absorber 5 is attached to the flange portion 30c, as shown in FIG. 4D, the first elastic member 50 is in contact with the cap 36 only at the tip of the convex portion 50c, and the second Since only the tip of the convex portion 51c of the elastic member 51 is in contact with the fixed plate 34, the first elastic member 50 and the second elastic member 51 are respectively in contact with the cap 36 and the fixed plate 34 as in the first embodiment. The contact area can be reduced as compared with the case where the contact is made at. Thus, the vibration generated when the movable iron core 31 hits the fixed iron core 30 propagates to the cap 36 and the fixed plate 34 only through the convex portions 50c and 51c, so that the vibration propagating to the outside is reduced and the contact is made. The operation sound of the apparatus can be further reduced.

尚、図５（ａ）〜（ｃ）に示すように、第１の弾性部材５０の上面に、径方向に沿って下方向に窪んだ複数（図示では４つ）の凹部５０ｄを設けるとともに、第２の弾性部材５１の下面に、径方向に沿って上方向に窪んだ複数（図示では４つ）の凹部５１ｄを設けても構わない。この場合でも、上記と同様に接点装置の動作音を低減することができる。   As shown in FIGS. 5A to 5C, the upper surface of the first elastic member 50 is provided with a plurality (four in the drawing) of recesses 50d that are recessed downward along the radial direction. On the lower surface of the second elastic member 51, a plurality (four in the drawing) of recesses 51d that are recessed upward in the radial direction may be provided. Even in this case, the operation sound of the contact device can be reduced as described above.

（実施形態３）
以下、本発明に係る接点装置の実施形態３について図面を用いて説明する。但し、本実施形態の基本的な構成は実施形態１と共通であるので、共通する部位には同一の番号を付して説明を省略するものとする。また、以下の説明では、図６（ａ）における上下を上下方向と定めるものとする。本実施形態は、図６（ａ）〜（ｃ）に示すように、第１の弾性部材５０の上面に、上方向に突出するとともに第１の挿通孔５０ａの全周を覆う略円環状の第１の周壁部５０ｅを突設し、第２の弾性部材５１の下面に、下方向に突出するとともに第２の挿通孔５１ａの全周を覆う略円環状の第２の周壁部５１ｅを突設している。 (Embodiment 3)
Hereinafter, a third embodiment of the contact device according to the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted. In the following description, the vertical direction in FIG. 6A is defined as the vertical direction. In the present embodiment, as shown in FIGS. 6A to 6C, the upper surface of the first elastic member 50 protrudes upward and has a substantially annular shape covering the entire circumference of the first insertion hole 50 a. The first peripheral wall portion 50e is provided so as to protrude from the lower surface of the second elastic member 51 so as to protrude downward and to cover the entire circumference of the second insertion hole 51a. Has been established.

ここで、衝撃吸収体５を鍔部３０ｃに取り付けた状態において、図６（ｄ）に示すように、第１の周壁部５０ｅの先端部がキャップ３６と当接し、第２の周壁部５１ｅの先端部が固定板３４と当接することで、固定鉄心３０の挿通孔３０ａの周方向に沿ったキャップ３６と第１の弾性部材５０との隙間が埋められるとともに、固定板３４の挿通孔３４ａの周方向に沿った固定板３４と第２の弾性部材５１との隙間が埋められる。   Here, in a state where the shock absorber 5 is attached to the flange portion 30c, as shown in FIG. 6D, the tip end portion of the first peripheral wall portion 50e contacts the cap 36, and the second peripheral wall portion 51e When the tip end abuts on the fixed plate 34, the gap between the cap 36 and the first elastic member 50 along the circumferential direction of the insertion hole 30 a of the fixed core 30 is filled, and the insertion hole 34 a of the fixed plate 34 is also formed. A gap between the fixing plate 34 and the second elastic member 51 along the circumferential direction is filled.

而して、固定接点１１ａと可動接点２０ａとの接離に伴って生じる消耗粉等の異物６が固定鉄心３０の挿通孔３０ａ及び固定板３４の挿通孔３４ａを介して可動鉄心３１へ侵入するのを第１の周壁部５０ｅ及び第２の周壁部５１ｅによって遮ることができるので、接点装置の開閉動作の信頼性を向上することができる。   Thus, foreign matter 6 such as consumable powder generated due to contact and separation between the fixed contact 11a and the movable contact 20a enters the movable core 31 through the insertion hole 30a of the fixed core 30 and the insertion hole 34a of the fixed plate 34. Can be blocked by the first peripheral wall portion 50e and the second peripheral wall portion 51e, so that the reliability of the switching operation of the contact device can be improved.

本発明に係る接点装置の実施形態１を示す図で、（ａ）は衝撃吸収体の断面図で、（ｂ）衝撃吸収体を下側から見た平面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of the contact device which concerns on this invention, (a) is sectional drawing of an impact absorber, (b) It is the top view which looked at the impact absorber from the lower side. 同上の衝撃吸収体の取付方法を示す図で、（ａ）は取り付ける前の状態を示す要部断面図で、（ｂ）は取り付けた後の状態を示す要部断面図である。It is a figure which shows the attachment method of an impact absorber same as the above, (a) is principal part sectional drawing which shows the state before attachment, (b) is principal part sectional drawing which shows the state after attachment. （ａ）〜（ｆ）は、同上の衝撃吸収体に切り欠きを設けた場合を示す図である。(A)-(f) is a figure which shows the case where a notch is provided in the shock absorber same as the above. 本発明に係る接点装置の実施形態２を示す図で、（ａ）〜（ｃ）は、衝撃吸収体の概略図で、（ｄ）は衝撃吸収体を取り付けた状態を示す要部断面図である。It is a figure which shows Embodiment 2 of the contact apparatus which concerns on this invention, (a)-(c) is the schematic of a shock absorber, (d) is principal part sectional drawing which shows the state which attached the shock absorber. is there. （ａ）〜（ｃ）は、同上の衝撃吸収体に複数の凹部を設けた場合を示す図である。(A)-(c) is a figure which shows the case where a several recessed part is provided in the shock absorber same as the above. 本発明に係る接点装置の実施形態３を示す図で、（ａ）〜（ｃ）は、衝撃吸収体の概略図で、（ｄ）は衝撃吸収体を取り付けた状態を示す要部断面図である。It is a figure which shows Embodiment 3 of the contact apparatus which concerns on this invention, (a)-(c) is the schematic of a shock absorber, (d) is principal part sectional drawing which shows the state which attached the shock absorber. is there. 従来の接点装置を示す断面図である。It is sectional drawing which shows the conventional contact apparatus. 同上の衝撃吸収体を固定鉄心の鍔部の厚み方向における両側に取り付ける場合を示す図で、（ａ）は衝撃吸収体を取り付ける前の状態を示す要部断面図で、（ｂ）は衝撃吸収体を取り付けた後の状態を示す要部断面図である。It is a figure which shows the case where the shock absorber same as the above is attached to the both sides in the thickness direction of the collar part of a fixed iron core, (a) is principal part sectional drawing which shows the state before attaching a shock absorber, (b) is shock absorption. It is principal part sectional drawing which shows the state after attaching a body.

符号の説明Explanation of symbols

１１ 固定端子
１１ａ 固定接点（固定接点部）
２０ 可動接触子
２０ａ 可動接点（可動接点部）
２１ 可動軸
３０ 固定鉄心
３０ｃ 鍔部
３１ 可動鉄心
５ 衝撃吸収体
５０ 第１の弾性部材
５０ａ 第１の挿通孔
５１ 第２の弾性部材
５１ａ 第２の挿通孔
Ａ 接点ブロック
Ｂ 駆動ブロック 11 Fixed terminal 11a Fixed contact (fixed contact)
20 Movable contact 20a Movable contact (movable contact)
21 movable shaft 30 fixed iron core 30c collar 31 movable iron core 5 shock absorber 50 first elastic member 50a first insertion hole 51 second elastic member 51a second insertion hole A contact block B drive block

Claims (4)

固定接点部を有する固定端子、及び固定接点部に接離する可動接点部を有する可動接触子を備えた接点ブロックと、可動接触子が一端側に固定される可動軸と、可動軸の他端側に固定された可動鉄心と、可動軸が外挿されて可動鉄心と対向する固定鉄心と、固定鉄心と可動鉄心との間に磁気吸引力を発生させて可動鉄心を固定鉄心に当たる向きに移動させる駆動ブロックと、可動接触子に対向する固定鉄心の端部に当接して可動鉄心が固定鉄心に当たる際の衝撃を吸収する衝撃吸収体とを備え、固定鉄心には、可動接触子と対向する一端部において径方向に突出する鍔部が設けられ、衝撃吸収体は、鍔部の厚み方向における一端側を覆うとともに可動軸を挿通させる第１の挿通孔が貫設された第１の弾性部材と、鍔部の厚み方向における他端側を覆うとともに固定鉄心を挿通させる第２の挿通孔が貫設された第２の弾性部材とから成り、第１の弾性部材及び第２の弾性部材の外周縁が互いに一体に形成されたことを特徴とする接点装置。   A fixed terminal having a fixed contact portion, a contact block having a movable contact having a movable contact portion contacting and separating from the fixed contact portion, a movable shaft to which the movable contact is fixed on one end side, and the other end of the movable shaft The movable core is fixed to the side, the movable core is extrapolated, the fixed core facing the movable core, and a magnetic attraction force is generated between the fixed core and the movable core to move the movable core in the direction that hits the fixed core. And a shock absorber that abuts against the end of the fixed iron core facing the movable contact and absorbs an impact when the movable iron hits the fixed iron core, and the fixed iron core faces the movable contact A first elastic member provided with a flange projecting in the radial direction at one end, the shock absorber covering one end in the thickness direction of the flange and having a first insertion hole through which the movable shaft is inserted. And the other end in the thickness direction of the buttocks And a second elastic member having a second insertion hole through which the fixed iron core is inserted, and the outer peripheral edges of the first elastic member and the second elastic member are formed integrally with each other. Characteristic contact device. 前記第１の挿通孔又は第２の挿通孔の少なくとも何れか１つには、挿通孔と連通する切り欠きが設けられた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 at least one of the first insertion hole and the second insertion hole is provided with a notch communicating with the insertion hole. 前記第１の弾性部材及び第２の弾性部材の外面には、鍔部の厚み方向に突出する一乃至複数の凸部若しくは鍔部の厚み方向に窪んだ一乃至複数の凹部が設けられたことを特徴とする請求項１又は２記載の接点装置。   The outer surfaces of the first elastic member and the second elastic member were provided with one or more protrusions protruding in the thickness direction of the flange or one or more recesses recessed in the thickness direction of the flange. The contact device according to claim 1 or 2. 前記第１の弾性部材の外面には、鍔部の厚み方向に突出するとともに第１の挿通孔の全周を覆う第１の周壁部が設けられ、第２の弾性部材の外面には、鍔部の厚み方向に突出するとともに第２の挿通孔の全周を覆う第２の周壁部が設けられたことを特徴とする請求項１記載の接点装置。
The outer surface of the first elastic member is provided with a first peripheral wall portion that protrudes in the thickness direction of the flange portion and covers the entire circumference of the first insertion hole, and the outer surface of the second elastic member is provided with an The contact device according to claim 1, wherein a second peripheral wall portion that protrudes in a thickness direction of the portion and covers the entire circumference of the second insertion hole is provided.
JP2008072257A 2008-03-19 2008-03-19 Contact device Expired - Fee Related JP4702380B2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP2008072257A JP4702380B2 (en) 2008-03-19 2008-03-19 Contact device
CA2718970A CA2718970C (en) 2008-03-19 2009-03-16 Contact device
EP16168530.0A EP3089189B1 (en) 2008-03-19 2009-03-16 Contact device
KR1020107023364A KR101190566B1 (en) 2008-03-19 2009-03-16 Contact device
US12/933,135 US8395463B2 (en) 2008-03-19 2009-03-16 Contact device
EP18172814.8A EP3385972B1 (en) 2008-03-19 2009-03-16 Contact device
CN2009801095190A CN101978453B (en) 2008-03-19 2009-03-16 Contact device
EP14194011.4A EP2860747B1 (en) 2008-03-19 2009-03-16 Contact device
CN201310156418.7A CN103258689B (en) 2008-03-19 2009-03-16 Contact arrangement
PCT/JP2009/055054 WO2009116493A1 (en) 2008-03-19 2009-03-16 Contact device
EP09722741.7A EP2267746B1 (en) 2008-03-19 2009-03-16 Contact device

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