JP2008235218A - Changeover switch - Google Patents

Changeover switch Download PDF

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Publication number
JP2008235218A
JP2008235218A JP2007077242A JP2007077242A JP2008235218A JP 2008235218 A JP2008235218 A JP 2008235218A JP 2007077242 A JP2007077242 A JP 2007077242A JP 2007077242 A JP2007077242 A JP 2007077242A JP 2008235218 A JP2008235218 A JP 2008235218A
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Japan
Prior art keywords
terminal plate
fixed
insulating base
terminal
changeover switch
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JP2007077242A
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Japanese (ja)
Inventor
Morinari Machida
謹斎 町田
Takehisa Takeuchi
剛久 竹内
Eijiro Shimoyama
栄治郎 下山
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Fuji Electric FA Components and Systems Co Ltd
Chichibu Fuji Co Ltd
Original Assignee
Fuji Electric FA Components and Systems Co Ltd
Chichibu Fuji Co Ltd
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Application filed by Fuji Electric FA Components and Systems Co Ltd, Chichibu Fuji Co Ltd filed Critical Fuji Electric FA Components and Systems Co Ltd
Priority to JP2007077242A priority Critical patent/JP2008235218A/en
Priority to FR0800992A priority patent/FR2914107A1/en
Priority to CN2008100858619A priority patent/CN101271794B/en
Publication of JP2008235218A publication Critical patent/JP2008235218A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
    • H01H5/10—Energy stored by deformation of elastic members by compression or extension of coil springs one end of spring being fixedly connected to the stationary or movable part of the switch and the other end reacting with a movable or stationary rigid member respectively through pins, cams, toothed or other shaped surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals

Abstract

<P>PROBLEM TO BE SOLVED: To provide a changeover switch which has a high heat resistance enough to control softening and deformation of an insulating base made of resin supporting an external connection terminal even if the terminal is heated. <P>SOLUTION: There are provided narrow-width portions in the portions of terminals plates such as a normally-closed fixed terminal plate, a normally-open fixed termial plate and a common terminal plate which penetrates the insulating base of the changeover switch, and is fixed on and supported by the base, which are embedded in the insulating base, and as a result, a heat transfer from the terminal plates to the insulating base is prevented. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、押ボタンスイッチなどに組み込んで使用される切換スイッチに関する。   The present invention relates to a changeover switch used by being incorporated in a pushbutton switch or the like.

この種のスイッチは、すでに特許文献１等によりよく知られている。   This type of switch is already well known from Patent Document 1 and the like.

この特許文献１等により知られている従来の切換スイッチの代表的な構成を図６に示す。   A typical configuration of a conventional changeover switch known from Patent Document 1 is shown in FIG.

この図６の切換スイッチは、固定部材として、常閉固定端子板４、常開固定端子板５および共通端子板６を備えている。常閉固定端子板４には、図７に示すように、先端部に固定接点４ａが取り付けられ、基端部に一体的に外部接続端子４ｂが形成されている。また、常開固定端子板５にも、先端部に固定接点５aが取り付けられ、常閉固定端子板４の固定接点４ａの下方に所定間隔をおいて対向配置されている。そして基端部に、外部接続端子５ｂが一体に形成されている。さらに、共通端子板６には、先端部に可動接触子２および操作レバー３等の可動部材を支持するためのＵ字形の支持枠６ａが形成されるとともに基端部に外部接続端子６ｂが一体に形成されている。これらの固定部材としての端子板４，５，６は中間部が共通の絶縁樹脂により形成された絶縁基台１に埋め込まれ、これを貫通して固定支持される。   The changeover switch of FIG. 6 includes a normally closed fixed terminal plate 4, a normally open fixed terminal plate 5, and a common terminal plate 6 as fixed members. As shown in FIG. 7, the normally closed fixed terminal plate 4 has a fixed contact 4a attached to the distal end portion and an external connection terminal 4b formed integrally with the proximal end portion. The normally open fixed terminal plate 5 is also provided with a fixed contact 5a at the tip, and is disposed below the fixed contact 4a of the normally closed fixed terminal plate 4 at a predetermined interval. The external connection terminal 5b is integrally formed at the base end. Further, the common terminal plate 6 is formed with a U-shaped support frame 6a for supporting movable members such as the movable contact 2 and the operation lever 3 at the distal end portion, and the external connection terminal 6b is integrally formed at the proximal end portion. Is formed. These terminal plates 4, 5, and 6 as fixing members are embedded in an insulating base 1 having an intermediate portion formed of a common insulating resin, and are fixedly supported by penetrating them.

可動部材となる可動接触子２には、先端に双頭の可動接点２ａが取り付けられるとともに、基端部に支持枠６ａに当接されて可動接触子の回動支点となる支点部２ｃが形成される。もう一つの可動部材である操作レバー３には、図７の方が明確であるが、先端部に前記絶縁基台１に設けられた操作レバー３を支持する支持体１ａに当接して回動支点となる支点部３ａが形成され、基端部に外部から操作される操作片３ｂが設けられている。そしてこの操作レバー３は共通端子板６に形成された支持枠６ａにより支持され、これにより上限の位置が制限される。   The movable contact 2 that is a movable member is provided with a double-head movable contact 2a at the distal end, and a fulcrum portion 2c that is in contact with the support frame 6a at the base end and serves as a rotation fulcrum of the movable contact. The FIG. 7 shows the operation lever 3 which is another movable member, but it is in contact with the support 1a which supports the operation lever 3 provided on the insulating base 1 at the tip portion and rotates. A fulcrum part 3a serving as a fulcrum is formed, and an operation piece 3b operated from the outside is provided at the base end part. The operation lever 3 is supported by a support frame 6a formed on the common terminal board 6, and thereby the upper limit position is limited.

そして、可動接触子２と操作レバー３とは、これらに設けられた係止穴２ｈおよび３ｈに引張りコイルばねにより構成された操作ばね８の両端に設けられた鉤状のフック８ａおよび８ｂを引掛けて連繋されている。   The movable contact 2 and the operation lever 3 pull hook-like hooks 8a and 8b provided at both ends of the operation spring 8 constituted by a tension coil spring in the locking holes 2h and 3h provided in these. It is connected by hanging.

このように構成された切換スイッチは、図６および図７に示すように操作レバー３の操作片３ｂが上方にある状態では、操作ばね８が、可動接触子２の先端部および操作レバー３の基端部を上方へ引張るため可動接触子２は常閉固定接点４ａ側に回動され、可動接点２ａが固定接点４ａに当接する。これにより、共通端子板６と常閉固定端子板４の間の回路が閉じられる。   6 and FIG. 7, the changeover switch configured as described above is configured so that the operation spring 8 is connected to the distal end portion of the movable contact 2 and the operation lever 3 in a state where the operation piece 3 b of the operation lever 3 is on the upper side. In order to pull the base end upward, the movable contact 2 is rotated toward the normally closed fixed contact 4a, and the movable contact 2a contacts the fixed contact 4a. Thereby, the circuit between the common terminal board 6 and the normally closed fixed terminal board 4 is closed.

操作片３ｂを押し下げて操作レバー３を支点部３ａを支点にして反時計方向に回動させると、操作ばね８の操作レバー側のフック８ｂが中心より下方に移動したところで、このばねの作用力の方向が反転し、可動接触子２が急激に下方へ引っ張られて、可動接点２ａが常開固定端子板５の固定接点５ａに閉じられ、共通端子板６を常開固定端子板５に切換え接続する。
特開平１１−１９５３４６号公報 When the operating piece 3b is pushed down and the operating lever 3 is turned counterclockwise with the fulcrum 3a as a fulcrum, the hook 8b on the operating lever side of the operating spring 8 moves downward from the center. Is reversed, the movable contact 2 is suddenly pulled downward, the movable contact 2a is closed by the fixed contact 5a of the normally open fixed terminal plate 5, and the common terminal plate 6 is switched to the normally open fixed terminal plate 5. Connecting.
JP 11-195346 A

このように構成された切換スイッチを電気回路に組み込んだり、電気回路から外したりするときは、各端子板の外部接続端子に半田ごてを当てて加熱して、電線を端子に半田付けしたり、半田を溶かして電線を端子から引き外したりするのが一般的である。しかしながら、このような切換スイッチの外部接続端子への電線の接続作業や、接続された電線の引き外し作業のとき、外部接続端子に加えられる熱が、これらの端子を支持する樹脂製の絶縁基台に伝わり、この熱によって加熱されて絶縁基台が軟化、変形し、絶縁基台による端子板の締め付け力に緩みが生じることがある。この緩みにより各端子板が揺動すると、内部の固定接点や、支持枠の位置関係がずれて切換スイッチの動作が不安定になる問題がある。   When incorporating the changeover switch configured in this way into an electric circuit or removing it from the electric circuit, apply heat to the external connection terminal of each terminal plate and heat it to solder the wire to the terminal. In general, the solder is melted and the electric wire is pulled off from the terminal. However, the heat applied to the external connection terminals during the connection work of the electric wires to the external connection terminals of such a changeover switch or the removal work of the connected electric wires is a resin insulation base that supports these terminals. The insulation base is softened and deformed by being transmitted to the base and heated by this heat, and the tightening force of the terminal board by the insulation base may be loosened. If each terminal plate swings due to this loosening, there is a problem that the operation of the changeover switch becomes unstable due to the displacement of the internal fixed contacts and the positional relationship of the support frame.

また現在は、環境汚染対策のために半田付けには鉛成分を含まない鉛フリーの半田が使用されることが一般化されつつあるが、鉛フリーの半田は、その融点が鉛を含有する半田よりも高く、また端子部材への濡れ性が鉛を含有する半田よりも低下するので、鉛フリー半田を使用して電線の接続作業を行う場合は、外部接続端子への半田ごてを当てて加熱する時間が長くなるので、このような加熱時間の長い半田付け作業に耐えられる耐熱性の高い切換スイッチの出現が望まれている。   Currently, lead-free solder that does not contain lead components is being used for soldering as a measure against environmental pollution. Lead-free solder has a melting point that contains lead. Higher and the wettability to the terminal member is lower than that of solder containing lead. When using lead-free solder to connect the wires, apply a soldering iron to the external connection terminal. Since the time for heating becomes long, the appearance of a highly heat-resistant changeover switch that can withstand such a soldering operation with a long heating time is desired.

この発明は、このような問題点を解消するために、外部接続端子への加熱があってもこれを支持する樹脂製の絶縁基台が熱により軟化、変形することを抑えることのできる耐熱性の高い切換スイッチを提供することを課題とするものである。   In order to eliminate such problems, the present invention has a heat resistance that can suppress softening and deformation of the insulating base made of resin that supports the external connection terminal even if the external connection terminal is heated. It is an object of the present invention to provide a high changeover switch.

このような課題を解決するため、この発明は、それぞれ先端部に固定接点が取り付けられ、基端部に外部接続端子が形成された常閉固定端子板および常開固定端子板と、先端部にＵ字形の支持枠が形成され、基端部に外部接続端子が形成された共通端子板とを設け、これらの端子板を、前記固定接点および支持枠ならびに外部接続端子を露出させて絶縁樹脂により形成した絶縁基台に埋め込んで固定し、この絶縁基台上で、前記常閉固定端子板に取り付けた固定接点と常開固定端子板に取り付けた固定接点とを上下に間隔をおいて対向配置し、先端部に可動接点を取り付け、基端部に前記支持枠に当接して回動支点となる支点部を形成した可動接触子と、前記支持枠に回動自在に支持され、先端部を前記絶縁基台上に設けた支持体に当接して回動支点となる支点部を形成し、基端部に外部から操作される操作片を設けた操作レバーとを操作ばねにより連繋してスナップアクション機構を形成し、前記操作レバーの操作片を上下方向に回動操作することにより前記可動接触子を反転駆動して先端部の可動接点を、前記常閉固定端子板の固定接点と常開固定端子板の固定接点とに交互に切換え接触させるようにしてなる切換スイッチにおいて、前記常閉固定端子板、常開固定端子板および共通端子板等の端子板の前記絶縁基台に埋め込まれた中間部分に幅を狭くした狭隘部を設けたことを特徴するものである。   In order to solve such problems, the present invention provides a normally closed fixed terminal plate and a normally open fixed terminal plate each having a fixed contact attached to the distal end portion and an external connection terminal formed on the proximal end portion, and a distal end portion. A U-shaped support frame is formed, and a common terminal plate having an external connection terminal formed at the base end portion is provided. These terminal plates are made of insulating resin by exposing the fixed contact, the support frame, and the external connection terminal. The fixed contact attached to the normally closed fixed terminal plate and the fixed contact attached to the normally open fixed terminal plate are arranged opposite each other on the insulated base by being embedded and fixed on the formed insulating base. A movable contact is attached to the distal end, and a movable contact that forms a fulcrum that becomes a pivot fulcrum by contacting the support frame at the base end, and is pivotally supported by the support frame. In contact with a support provided on the insulating base A fulcrum part that becomes a moving fulcrum is formed, and an operation lever provided with an operation piece operated from the outside is connected to the base end part by an operation spring to form a snap action mechanism, and the operation piece of the operation lever is moved vertically By rotating the movable contact to reversely drive the movable contact so that the movable contact at the tip is alternately switched between the fixed contact of the normally closed fixed terminal plate and the fixed contact of the normally open fixed terminal plate. In the changeover switch, a narrowed portion having a narrow width is provided at an intermediate portion embedded in the insulating base of the terminal plate such as the normally closed fixed terminal plate, the normally open fixed terminal plate and the common terminal plate. To do.

また、この発明においては、前記常閉固定端子板、常開固定端子板および共通端子板等の端子板は、インサート成形により絶縁樹脂製の絶縁基台に埋設するようにすると前記狭隘部を抜け止め機構とすることができる利点がある。   According to the present invention, the terminal plates such as the normally closed fixed terminal plate, the normally open fixed terminal plate, and the common terminal plate may be embedded in an insulating base made of insulating resin by insert molding to pass through the narrow portion. There is an advantage that a stop mechanism can be provided.

さらに、この発明においては、前記前記常閉固定端子板、常開固定端子板および共通端子板等の端子板の狭隘部は、各端子板の中心部を打ち抜くことによって形成することができる。そして、前記狭隘部は、各端子板を側方の一方または両方から切り欠くことによっても形成することができる。   Furthermore, in this invention, the narrow part of terminal boards, such as the said normally closed fixed terminal board, a normally open fixed terminal board, and a common terminal board, can be formed by punching the center part of each terminal board. And the said narrow part can also be formed by notching each terminal board from one or both sides.

この発明によれば、切換スイッチの絶縁樹脂製の絶縁基台に埋設支持された、常閉固定端子板、常開固定端子板および共通端子板等の端子板の絶縁基台に埋め込まれた中間部分に幅を狭めた狭隘部を設けているので、この部分で端子板の熱抵抗が大きくなるため、外部接続端子に電線を半田付けにより接続する等のために、この端子板を加熱しても、端子板から絶縁基台への熱伝導が抑制され、絶縁基台の熱変形を小さくすることができる。このため、各端子板の絶縁基台による締め付け力の低下による固定の緩みを防止することができ、切換スイッチの耐熱性を高めることができる。   According to the present invention, an intermediate embedded in an insulating base of a terminal plate such as a normally closed fixed terminal plate, a normally open fixed terminal plate and a common terminal plate embedded and supported in an insulating resin base of the changeover switch. Since a narrow part with a narrow width is provided in the part, the thermal resistance of the terminal board increases at this part, so this terminal board is heated to connect the electric wires to the external connection terminals by soldering, etc. However, heat conduction from the terminal board to the insulating base is suppressed, and thermal deformation of the insulating base can be reduced. For this reason, it is possible to prevent loosening due to a decrease in the tightening force by the insulating base of each terminal plate, and to improve the heat resistance of the changeover switch.

この発明の実施の形態を、図に示す実施例に基づいて説明する。   Embodiments of the present invention will be described based on examples shown in the drawings.

図１および図２は、この発明による切換スイッチの第１の実施例を示すものであり、図１は、その縦断面図、図２はこの実施例にける端子板を示す平面図である。   1 and 2 show a first embodiment of a changeover switch according to the present invention. FIG. 1 is a longitudinal sectional view thereof, and FIG. 2 is a plan view showing a terminal plate in this embodiment.

この実施例の切換スイッチは、外観的には図６および図７に示す従来例とほとんど同じであるため、この実施例の外観の構成は、図６を参照されたい。   The changeover switch of this embodiment is almost the same as that of the conventional example shown in FIGS. 6 and 7 in terms of appearance, so refer to FIG. 6 for the configuration of the appearance of this embodiment.

図１および図２において、従来のスイッチと同じ構成要素は同一の符号で示し、その説明を省略する。   In FIG. 1 and FIG. 2, the same components as those of the conventional switch are denoted by the same reference numerals, and the description thereof is omitted.

図１および図２から明らかように、実施例１の切換スイッチにおいては、常閉固定端子板４、常開固定端子板５および共通端子板６は、従来例と同様に、その中間部分を絶縁基台１の中に埋め込んで、絶縁基台にこれを貫通して固定、支持される。絶縁基台１の上方へ引き出された各端子板（４、５、６）の先端部には、それぞれ固定接点４ａ、５aおよび可動接触子２が結合または支持される。絶縁基台１の下方へ引き出された各端子板（４、５、６）の基端部側にはそれぞれ外部接続端子４ｂ，５ｂおよび６ｂが形成される。   As is clear from FIGS. 1 and 2, in the changeover switch of the first embodiment, the normally closed fixed terminal plate 4, the normally open fixed terminal plate 5 and the common terminal plate 6 are insulated at the intermediate portions as in the conventional example. It is embedded in the base 1 and is fixed and supported through the insulating base. Fixed contacts 4a, 5a and a movable contact 2 are coupled or supported at the tip of each terminal plate (4, 5, 6) drawn upward from the insulating base 1. External connection terminals 4b, 5b and 6b are formed on the base end side of each terminal plate (4, 5, 6) drawn downward from the insulating base 1.

図２は、絶縁基台１により固定支持する前の端子板４，５，６を示すものであるが、この図から明らかように、一点鎖線の４角形の枠で囲まれた端子板４、５，６の絶縁基台１中に埋め込まれる中間部分４ｄ，５ｄ、６ｄには、それぞれ、この発明にしたがって、この部分に適宜の形状の窓穴４ｅ，５ｅ，６ｅを打ち抜き形成することにより導体幅の狭められた狭隘部４ｆ，５ｆ、６ｆが設けられており、この点が、前記の従来装置と異なるところである。   FIG. 2 shows the terminal plates 4, 5, 6 before being fixedly supported by the insulating base 1, but as is clear from this figure, the terminal plate 4 surrounded by a dashed-dotted square frame, The intermediate portions 4d, 5d, and 6d embedded in the insulating bases 5 and 6 are each formed by punching and forming window holes 4e, 5e, and 6e having appropriate shapes according to the present invention. Narrowed portions 4f, 5f, and 6f having narrow widths are provided, which is different from the above-described conventional device.

このように絶縁基台１に埋め込まれる中間部分に窓穴４ｅ，５ｅ、６ｅを打ち抜いて導体幅の狭められた狭隘部を形成した端子板４，５，６を樹脂モールド型にインサートした状態で絶縁樹脂をモールド成形する通常のインサート成形により、端子板の埋め込まれた絶縁基台１を形成する。これにより、端子板４，５，６を固定支持した絶縁基台１の中では、図１に示すように、各端子板の窓穴４ｅ、５ｅ，６ｅ中にも絶縁樹脂が充填されるため、各端子板の絶縁基台１に対する抜け止め効果が一段と高まり、端子板４、５，６の絶縁基台１による固定、支持が強固に行われる。   In this state, the terminal plates 4, 5, and 6 in which the narrow holes with the narrowed conductor width are formed by punching the window holes 4e, 5e, 6e in the intermediate portion embedded in the insulating base 1 are inserted in the resin mold. The insulating base 1 in which the terminal board is embedded is formed by ordinary insert molding in which an insulating resin is molded. As a result, in the insulating base 1 in which the terminal plates 4, 5 and 6 are fixedly supported, the insulating resin is filled in the window holes 4e, 5e and 6e of the terminal plates as shown in FIG. The effect of preventing the terminal boards from being detached from the insulating base 1 is further enhanced, and the terminal boards 4, 5, 6 are firmly fixed and supported by the insulating base 1.

そして、端子板４，５，６の絶縁基台１の中に埋め込まれる中間部分にそれぞれ窓穴を設けて導体幅の狭められた狭隘部４ｆ，５ｆ，６ｆが形成されることにより、この部分の熱抵抗が増大するため、外部接続端子４ｂ，５ｂ，６ｂが外部の電線を半田付けするために加熱されても、端子板から樹脂の絶縁基台１への熱伝導が抑止され、絶縁基台１の温度上昇が抑えられるため、絶縁基台１の熱的変形が小さくなり、端子板４，５，６に対する絶縁基台１の締め付け力の緩みが起きにくくなる。このため、溶融温度の高い鉛フリー半田を用いて半田付けを行っても端子板を支持固定する絶縁基台１の熱変形を抑えることができ、切換スイッチの開閉特性を安定に保つことができる。   Then, by providing window holes in the intermediate portions embedded in the insulating base 1 of the terminal plates 4, 5, 6, respectively, and forming narrow portions 4 f, 5 f, 6 f with narrowed conductor widths, this portion Therefore, even if the external connection terminals 4b, 5b, and 6b are heated to solder external electric wires, heat conduction from the terminal plate to the resin insulation base 1 is suppressed, and the insulation base Since the temperature rise of the base 1 is suppressed, the thermal deformation of the insulating base 1 is reduced, and the tightening force of the insulating base 1 with respect to the terminal plates 4, 5, 6 is less likely to occur. For this reason, even if soldering is performed using lead-free solder having a high melting temperature, thermal deformation of the insulating base 1 that supports and fixes the terminal board can be suppressed, and the open / close characteristics of the changeover switch can be kept stable. .

なお、この狭隘部の幅は、熱抵抗を大きくするには可能な限り細くするのがよいが、電気回路も構成するので、定格の電流容量を確保できる大きさにすることが必要であるので、両方の条件を満たす値から適宜に選択する。   The width of the narrow portion should be as small as possible in order to increase the thermal resistance, but since it also constitutes an electric circuit, it is necessary to make it large enough to ensure the rated current capacity. , Appropriately selected from values that satisfy both conditions.

前記の実施例１では、端子板の絶縁基台に埋め込まれる中間部分に窓穴を打ち抜いて導体幅の縮小された狭隘部を形成するようにしているが、これは次のように端子板を側方から切り欠いて形成することもできる。   In the first embodiment, a narrow hole with a reduced conductor width is formed by punching a window hole in an intermediate portion embedded in the insulating base of the terminal plate. It can also be formed by cutting out from the side.

図３および図４に示す第２の実施例においては、端子板４，５，６の絶縁基台１に埋め込まれる中間部分に、その側方の一方側から、それぞれ図４に点線で示すような切欠き４ｍ、５ｍ、６ｍを設けて、他方側に幅の狭められた狭隘部４ｇ，５ｇ，６ｇが形成されている。この場合、切欠き部に入り組んだ段差が形成されるようにすることにより、端子板４，５，６の絶縁基台１に対する抜け止め効果を大きくすることができる。   In the second embodiment shown in FIGS. 3 and 4, the intermediate portions embedded in the insulating base 1 of the terminal plates 4, 5 and 6 are respectively shown by dotted lines in FIG. 4 from one side thereof. There are provided notches 4m, 5m, and 6m, and narrow portions 4g, 5g, and 6g having a narrow width are formed on the other side. In this case, it is possible to increase the effect of preventing the terminal plates 4, 5, and 6 from coming off the insulating base 1 by forming a stepped portion entering the notch.

また、図５は実施例２の端子板の変形例を示すものであり、この図５には、共通端子板６だけを例示しているが、その絶縁基台１に埋め込まれる中間部分に、両側から点線で示すように切欠き６ｍ、６ｎを設け、この部分の中間部に幅の狭められた狭隘部６ｈを形成したものである。   FIG. 5 shows a modification of the terminal board of the second embodiment. In FIG. 5, only the common terminal board 6 is illustrated, but in the intermediate portion embedded in the insulating base 1, As shown by the dotted lines from both sides, notches 6m and 6n are provided, and a narrowed portion 6h having a narrow width is formed in the middle portion of this portion.

以上説明したように、この発明にしたがって、切換スイッチの絶縁基台１に支持固定される端子板４，５，６の絶縁基台１に埋め込まれる中間部分に幅の狭められた狭隘部を形成することにより、外部接続端子４ｂ、５ｂ、６ｂを、これに電線を半田付けするために高温に加熱しても、中間部分は熱抵抗が高いことにより、端子板から絶縁基台への熱伝導が抑えられるため、絶縁樹脂で構成された絶縁基台１の熱変形が小さくなり、端子板の緩みの発生が抑制され絶縁基台による端子板の支持が安定し、強固に保たれる。したがって、この発明によれば、切換スイッチの耐熱性が高められ、鉛フリー半田のような高温半田による半田付け作業が対応可能となる。   As described above, according to the present invention, a narrowed portion having a narrow width is formed in the intermediate portion embedded in the insulating base 1 of the terminal boards 4, 5, 6 supported and fixed to the insulating base 1 of the changeover switch. Thus, even if the external connection terminals 4b, 5b and 6b are heated to a high temperature in order to solder the electric wires to the external connection terminals 4b, 5b and 6b, the intermediate portion has a high thermal resistance, so that heat conduction from the terminal plate to the insulating base is achieved. Therefore, the thermal deformation of the insulating base 1 made of an insulating resin is reduced, the occurrence of loosening of the terminal board is suppressed, and the support of the terminal board by the insulating base is stabilized and firmly maintained. Therefore, according to the present invention, the heat resistance of the changeover switch is improved, and soldering work using high-temperature solder such as lead-free solder can be handled.

この発明の第１の実施例による切換スイッチの構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the changeover switch by 1st Example of this invention. この発明の第１の実施例による端子板の構成を示す平面図である。It is a top view which shows the structure of the terminal board by 1st Example of this invention. この発明の第２の実施例による切換スイッチの構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the changeover switch by 2nd Example of this invention. この発明の第２の実施例による端子板の構成を示す平面図である。It is a top view which shows the structure of the terminal board by 2nd Example of this invention. この発明の第２の実施例による端子板の変形例を示す平面図である。It is a top view which shows the modification of the terminal board by 2nd Example of this invention. 従来の切換スイッチの構成を示す斜視図である。It is a perspective view which shows the structure of the conventional changeover switch. 従来の切換スイッチの構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the conventional changeover switch.

符号の説明Explanation of symbols

１：絶縁基台
２：可動接触子
３：操作レバー
４：常閉固定端子板
４ａ：常閉固定接点
４ｆ、４ｇ：狭隘部
５：常開固定端子板
５ａ：常開固定接点
５ｆ、５ｇ：狭隘部
６：共通端子板
６ａ：支持枠
６ｆ、６ｇ：狭隘部 1: Insulation base 2: Movable contact 3: Operation lever 4: Normally closed fixed terminal plate 4a: Normally closed fixed contact 4f, 4g: Narrow part 5: Normally open fixed terminal plate 5a: Normally open fixed contact 5f, 5g: Narrow part 6: Common terminal board 6a: Support frame 6f, 6g: Narrow part

Claims (4)

それぞれ先端部に固定接点が取り付けられ、基端部に外部接続端子が形成された常閉固定端子板および常開固定端子板と、先端部にＵ字形の支持枠が形成され、基端部に外部接続端子が形成された共通端子板とを設け、これらの端子板を、前記固定接点および支持枠ならびに外部接続端子を露出させて絶縁樹脂により形成した絶縁基台に埋め込んで固定し、この絶縁基台上で、前記常閉固定端子板に取り付けた固定接点と常開固定端子板に取り付けた固定接点とを上下に間隔をおいて対向配置し、先端部に可動接点を取り付け、基端部に前記支持枠に当接して回動支点となる支点部を形成した可動接触子と、前記支持枠に回動自在に支持され、先端部を前記絶縁基台上に設けた支持体に当接して回動支点となる支点部を形成し、基端部に外部から操作される操作片を設けた操作レバーとを操作ばねにより連繋してスナップアクション機構を形成し、前記操作レバーの操作片を上下方向に回動操作することにより前記可動接触子を反転駆動して先端部の可動接点を、前記常閉固定端子板の固定接点と常開固定端子板の固定接点とに交互に切換え接触させるようにしてなる切換スイッチにおいて、前記の常閉固定端子板、常開固定端子板および共通端子板等の端子板の前記絶縁基台に埋設された部分に幅を狭くした狭隘部を設けたことを特徴する切換スイッチ。   A normally closed fixed terminal plate and a normally open fixed terminal plate each having a fixed contact attached to the distal end portion and an external connection terminal formed on the proximal end portion, and a U-shaped support frame formed on the distal end portion. A common terminal plate on which external connection terminals are formed, and these terminal plates are fixed by being embedded in an insulating base formed of an insulating resin by exposing the fixed contacts, the support frame, and the external connection terminals. On the base, the fixed contact attached to the normally closed fixed terminal plate and the fixed contact attached to the normally open fixed terminal plate are arranged to face each other with an interval in the vertical direction, and a movable contact is attached to the distal end portion. And a movable contact that forms a fulcrum portion that becomes a pivot fulcrum by abutting against the support frame, and a support that is pivotally supported by the support frame and that has a tip portion abutting on a support provided on the insulating base. To form a fulcrum that will be a pivot fulcrum A snap action mechanism is formed by connecting an operation lever provided with an operation piece to be operated by an operation spring to rotate the operation piece of the operation lever up and down to drive the movable contact in a reverse direction. In the change-over switch, the movable contact at the tip portion is alternately switched between the fixed contact of the normally closed fixed terminal plate and the fixed contact of the normally open fixed terminal plate, and the normally closed fixed terminal plate, A changeover switch characterized in that a narrowed portion having a narrow width is provided in a portion embedded in the insulating base of a terminal plate such as an open fixed terminal plate and a common terminal plate. 請求項１に記載のものにおいて、前記常閉固定端子板、常開固定端子板および共通端子板等の端子板をインサート成形により絶縁樹脂の絶縁基台に埋設したことを特徴とする切換スイッチ   2. The changeover switch according to claim 1, wherein terminal plates such as the normally closed fixed terminal plate, the normally open fixed terminal plate, and the common terminal plate are embedded in an insulating base made of insulating resin by insert molding. 請求項１または２に記載のものにおいて、前記常閉固定端子板、常開固定端子板および共通端子板等の端子板の狭隘部を各端子板の中心部を打ち抜くことによって形成したことを特徴とする切換スイッチ。   The thing of Claim 1 or 2 WHEREIN: The narrow part of terminal boards, such as the said normally closed fixed terminal board, a normally open fixed terminal board, and a common terminal board, was formed by punching the center part of each terminal board. A changeover switch. 請求項１または２に記載のものにおいて、前記常閉固定端子板、常開固定端子板および共通端子板等の各端子板の狭隘部を各端子板を側方から切り欠くことによって形成したことを特徴とする切換スイッチ。   The thing of Claim 1 or 2 WHEREIN: The narrow part of each terminal board, such as the said normally closed fixed terminal board, a normally open fixed terminal board, and a common terminal board, was formed by notching each terminal board from the side. A changeover switch characterized by
JP2007077242A 2007-03-23 2007-03-23 Changeover switch Pending JP2008235218A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2007077242A JP2008235218A (en) 2007-03-23 2007-03-23 Changeover switch
FR0800992A FR2914107A1 (en) 2007-03-23 2008-02-25 Reversing switch for push-button switch, has narrow parts with reduced width, and formed in closed, opened and common terminal forming plates, where plates are enclosed in insulating base block that is made of insulating resin
CN2008100858619A CN101271794B (en) 2007-03-23 2008-03-21 Commutateur switch

Applications Claiming Priority (1)

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JP2007077242A JP2008235218A (en) 2007-03-23 2007-03-23 Changeover switch

Publications (1)

Publication Number Publication Date
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JP2010182676A (en) * 2009-02-05 2010-08-19 Kamada Korea Corp Rotary push switch
JP2013229236A (en) * 2012-04-26 2013-11-07 Panasonic Corp Contact device
WO2022102707A1 (en) * 2020-11-13 2022-05-19 Idec株式会社 Microswitch

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CN110660611A (en) * 2019-11-04 2020-01-07 重庆市合百盛电子科技有限公司 Adjustable temperature controller

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JP2010182676A (en) * 2009-02-05 2010-08-19 Kamada Korea Corp Rotary push switch
JP2013229236A (en) * 2012-04-26 2013-11-07 Panasonic Corp Contact device
WO2022102707A1 (en) * 2020-11-13 2022-05-19 Idec株式会社 Microswitch

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FR2914107A1 (en) 2008-09-26
CN101271794A (en) 2008-09-24
CN101271794B (en) 2010-12-08

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