JP2019186065A - Terminal conversion unit and electrical apparatus having the same - Google Patents

Terminal conversion unit and electrical apparatus having the same Download PDF

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Publication number
JP2019186065A
JP2019186065A JP2018076210A JP2018076210A JP2019186065A JP 2019186065 A JP2019186065 A JP 2019186065A JP 2018076210 A JP2018076210 A JP 2018076210A JP 2018076210 A JP2018076210 A JP 2018076210A JP 2019186065 A JP2019186065 A JP 2019186065A
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Japan
Prior art keywords
terminal
conversion unit
screw
auxiliary contact
plate portion
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JP2018076210A
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JP6848926B2 (en
Inventor
紀子 橋村
Kiko Hashimura
紀子 橋村
武雄 鴨崎
Takeo Kamosaki
武雄 鴨崎
賢 藤田
Masaru Fujita
賢 藤田
悠真 小野木
Yuma Onoki
悠真 小野木
英樹 代島
Hideki Daishima
英樹 代島
翔太 菊地
Shota Kikuchi
翔太 菊地
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Fuji Electric FA Components and Systems Co Ltd
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Fuji Electric FA Components and Systems Co Ltd
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Application filed by Fuji Electric FA Components and Systems Co Ltd filed Critical Fuji Electric FA Components and Systems Co Ltd
Priority to JP2018076210A priority Critical patent/JP6848926B2/en
Priority to FR1871875A priority patent/FR3080226B1/en
Priority to DE102018130266.5A priority patent/DE102018130266A1/en
Priority to CN201811464376.2A priority patent/CN110364395B/en
Publication of JP2019186065A publication Critical patent/JP2019186065A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/48275—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end with an opening in the housing for insertion of a release tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0066—Auxiliary contact devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34—Conductive members located under head of screw

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

To provide a terminal conversion unit and electrical apparatus having the same, capable of converting a screw terminal of an electrical apparatus into a spring terminal.SOLUTION: The present invention relates to terminal conversion units 51A, 51B electrically connected with screw terminals 43a, 43b, 44a, 44b formed at an electrical apparatus 40, and includes: a connected terminal 54 connected with screw terminals 43a, 43b, 44a, 44b formed at one end thereof; a spring terminal 56 arranged at the other end of the connected terminal 54.SELECTED DRAWING: Figure 7

Description

本発明は、電磁接触器やこれに使用する補助接点ユニット等のねじ端子を有する電気機器の端子変換ユニット及びこれを備えた電気機器に関する。   The present invention relates to a terminal conversion unit of an electric device having a screw terminal such as an electromagnetic contactor and an auxiliary contact unit used therein, and an electric device including the terminal conversion unit.

この種の電気機器として、例えば電磁接触器に装着する補助接点ユニットでは、特許文献１に記載されているように、ユニットケースの内部に収納された可動接点を支持する補助接点支えと、この補助接点支えと一体成形され、ユニットケースから突出した連結突起と、ユニットケースの側面に形成された可動接点が接触する固定接点に電気的に接続された外部接続用のねじ端子とを備えている。
この補助接点ユニットでは、連結突起を電磁接触器の側面に形成された接触子ホルダに連結させて電磁接触器の側面に装着することにより、電磁接触器の可動接触子の作動に応じて補助接点支えが作動する。
ねじ端子は、雌ねじを形成した端子板と、この端子板の雌ねじに螺合する端子ねじとで構成されている。このねじ端子には、通常は、接続コードに装着した圧着端子や、接続コードの被覆から露出された芯線を接続する。この場合の圧着端子や芯線の接続は、端子板上に圧着端子や、芯線を配置した状態で、座金を挿通した端子ねじを端子板の雌ねじ部に螺合させて締付けるようにしている。 As an electrical contact device of this type, for example, in an auxiliary contact unit mounted on an electromagnetic contactor, as described in Patent Document 1, an auxiliary contact support that supports a movable contact housed inside a unit case, A connection protrusion formed integrally with the contact support and protruding from the unit case, and a screw terminal for external connection electrically connected to a fixed contact with which a movable contact formed on the side surface of the unit case contacts.
In this auxiliary contact unit, the connecting protrusion is connected to the contact holder formed on the side surface of the electromagnetic contactor and is attached to the side surface of the electromagnetic contactor, so that the auxiliary contact is operated according to the operation of the movable contact of the electromagnetic contactor. The support is activated.
The screw terminal is composed of a terminal plate in which a female screw is formed and a terminal screw that is screwed into the female screw of the terminal plate. Normally, a crimp terminal attached to the connection cord or a core wire exposed from the coating of the connection cord is connected to the screw terminal. In this case, the crimp terminal and the core wire are connected by tightening the terminal screw through which the washer is inserted into the female screw portion of the terminal plate in a state where the crimp terminal and the core wire are arranged on the terminal plate.

特開２０１２−３８６４４号公報JP 2012-38644 A

しかしながら、特許文献１に記載された先行技術では、補助接点ユニットの外部接続用端子がねじ端子で構成されているので、配線等の接続部材の接続作業に手間が掛かるという未解決の課題がある。
そこで、本発明は、上記先行技術の課題に着目してなされたものであって、電気機器の外部接続端子に対して接続部材を容易に接続することができる電気機器の接続構造を提供することを目的としている。 However, in the prior art described in Patent Document 1, since the external connection terminal of the auxiliary contact unit is configured by a screw terminal, there is an unsolved problem that it takes time to connect a connection member such as a wiring. .
Therefore, the present invention has been made paying attention to the problems of the prior art described above, and provides a connection structure for an electric device that can easily connect a connection member to an external connection terminal of the electric device. It is an object.

上記目的を達成するために、本発明に係る端子変換ユニットの一態様は、電気機器に形成されたねじ端子に電気的に接続する端子変換ユニットであって、一端に形成したねじ端子に接続される被接続端子と、他端に形成したスプリング端子とを有する端子変換部材を備えている。
また、本発明に係る電気機器の一態様は、上記構成を有する端子変換ユニットを備えている。 In order to achieve the above object, one aspect of a terminal conversion unit according to the present invention is a terminal conversion unit that is electrically connected to a screw terminal formed in an electrical device, and is connected to a screw terminal formed at one end. A terminal conversion member having a connected terminal and a spring terminal formed at the other end.
Moreover, the one aspect | mode of the electric equipment which concerns on this invention is provided with the terminal conversion unit which has the said structure.

本発明の一態様によれば、端子変換部材に、電気機器のねじ端子に接続される被接続端子とスプリング端子とが形成されているので、端子変換ユニットを電気機器に装着することにより、スプリング端子付き電気機器として使用することができる。したがって、配線等の接続を容易に行うことが可能となる。   According to one aspect of the present invention, since the terminal to be connected and the spring terminal to be connected to the screw terminal of the electrical device are formed on the terminal conversion member, by attaching the terminal conversion unit to the electrical device, the spring It can be used as an electrical device with terminals. Accordingly, it is possible to easily connect the wiring and the like.

本発明の一実施形態を示す電磁接触器と補助接点ユニットを示す斜視図である。It is a perspective view which shows the electromagnetic contactor and auxiliary contact unit which show one Embodiment of this invention. 電磁接触器の断面図である。It is sectional drawing of an electromagnetic contactor. 補助接点ユニットを示す斜視図である。It is a perspective view which shows an auxiliary contact unit. 補助接点ユニットの平面図である。It is a top view of an auxiliary contact unit. 端子変換ユニットのカバーを取り外した状態の補助接点ユニットを示す平面図である。It is a top view which shows the auxiliary contact unit of the state which removed the cover of the terminal conversion unit. 図５のＶＩ−ＶＩ線上の拡大断面図である。It is an expanded sectional view on the VI-VI line of FIG. 図５のＶＩＩ−ＶＩＩ線上の拡大断面図である。It is an expanded sectional view on the VII-VII line of FIG. カバーの正面図である。It is a front view of a cover.

次に、図面を参照して、本発明の一実施の形態を説明する。以下の図面の記載において、同一又は類似の部分には同一又は類似の符号を付している。ただし、図面は模式的なものであり、厚みと平面寸法との関係、各層の厚みの比率等は現実のものとは異なる場合がある。したがって、具体的な厚みや寸法は以下の説明を参酌して判断すべきものである。又、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれていることはもちろんである。
また、以下に示す実施の形態は、本発明の技術的思想を具体化するための装置や方法を例示するものであって、本発明の技術的思想は、構成部品の材質、形状、構造、配置等を下記のものに特定するものでない。本発明の技術的思想は、特許請求の範囲に記載された請求項が規定する技術的範囲内において、種々の変更を加えることができる。 Next, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like may differ from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.
Further, the embodiment described below exemplifies an apparatus and a method for embodying the technical idea of the present invention, and the technical idea of the present invention includes the material, shape, structure, The layout is not specified as follows. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.

本発明の一実施形態を適用し得る電気機器の一つである電磁接触器及び補助接点ユニットについて説明する。
電磁接触器１０は、図１に示すように、互いに連結される合成樹脂製の第１フレーム１１Ａと第２フレーム１１Ｂとを備えている。
第１フレーム１１Ａには、図２に示すように、操作用電磁石１２が内装されている。第２フレーム１１Ｂには、図２に示すように、操作用電磁石１２によってオン・オフ駆動される接点機構１３が内装されている。
操作用電磁石１２は、固定鉄心２１と、この固定鉄心２１に対して前後方向から進退自在に配置された可動鉄心２２と、これら固定鉄心２１及び可動鉄心２２の周囲に配置された励磁コイル２３を巻装したスプール２４とを備えている。励磁コイル２３は、第１フレーム１１Ａの上面に形成されたコイル端子２５に電気的に接続されている。 An electromagnetic contactor and an auxiliary contact unit which are one of electric devices to which an embodiment of the present invention can be applied will be described.
As shown in FIG. 1, the magnetic contactor 10 includes a first frame 11 </ b> A and a second frame 11 </ b> B made of synthetic resin and connected to each other.
As shown in FIG. 2, an operation electromagnet 12 is built in the first frame 11 </ b> A. As shown in FIG. 2, the second frame 11 </ b> B includes a contact mechanism 13 that is turned on / off by the operation electromagnet 12.
The operation electromagnet 12 includes a fixed iron core 21, a movable iron core 22 that can be moved forward and backward with respect to the fixed iron core 21, and an excitation coil 23 that is arranged around the fixed iron core 21 and the movable iron core 22. And a spool 24 wound thereon. The exciting coil 23 is electrically connected to a coil terminal 25 formed on the upper surface of the first frame 11A.

可動鉄心２２は、接点機構１３を構成する可動接触子を収納した接点支え２６に取付けられている。接点支え２６には、左右側面に係合凹部２６ａが形成されている。この係合凹部２６ａは、第２フレーム１１Ｂの側面における第１フレーム１１Ａ側に形成された開口部２７を通じて外部に臨まされている。
また、第２フレーム１１Ｂの正面における上部側には、左右側面に形成された対向側壁３１ａ及び３１ｂ間に例えば３枚の隔壁３１ｃが形成され、これら隔壁３１ｃで互いに絶縁されて３個の主回路電源側端子部３３ａと１個の補助端子部３４ａとが設けられている。 The movable iron core 22 is attached to a contact support 26 that houses a movable contact constituting the contact mechanism 13. The contact support 26 is formed with engagement recesses 26a on the left and right side surfaces. The engaging recess 26a is exposed to the outside through an opening 27 formed on the first frame 11A side on the side surface of the second frame 11B.
Further, on the upper side of the front surface of the second frame 11B, for example, three partition walls 31c are formed between the opposing side walls 31a and 31b formed on the left and right side surfaces, and the three main circuits are insulated from each other by these partition walls 31c. A power supply side terminal portion 33a and one auxiliary terminal portion 34a are provided.

また、第２フレーム１１Ｂの正面における下部側には、左右側面の対向側壁３１ａ及び３１ｂ間に例えば３枚の隔壁３１ｃが形成され、これら隔壁３１ｃで互いに絶縁されて３個の主回路負荷側端子部３３ｂ及び１個の補助端子部３４ｂが設けられている。
第１フレーム１１Ａ及び第２フレーム１１Ｂは、左右側面に設けたスナップフィット係合部３５によって連結され、これらスナップフィット係合部３５の内側における第２フレーム１１Ｂの側面に後述する補助接点ユニット４０の係合爪４２が係合する係合凹部３６が形成されている。 Further, on the lower side of the front surface of the second frame 11B, for example, three partition walls 31c are formed between the opposite side walls 31a and 31b on the left and right side surfaces, and the three main circuit load side terminals are insulated from each other by these partition walls 31c. A portion 33b and one auxiliary terminal portion 34b are provided.
The first frame 11 </ b> A and the second frame 11 </ b> B are connected by snap fit engagement portions 35 provided on the left and right side surfaces, and an auxiliary contact unit 40, which will be described later, is disposed on the side surface of the second frame 11 </ b> B inside the snap fit engagement portions 35. An engagement recess 36 is formed in which the engagement claw 42 engages.

この電磁接触器１０には、側面にオプション部品である補助接点ユニット４０が装着される。この補助接点ユニット４０は、図３に示すように、電磁接触器１０の側面に対向する側面に電磁接触器１０の接点支え２６に形成された係合凹部２６ａに係合する係合突起４１が突出形成されているとともに、第２フレーム１１Ｂの係合凹部３６に係合する上下一対の係合爪４２が形成されている。この補助接点ユニット４０は、図示しないが内部に前後方向に二段に可動接点を保持した補助接点支えが移動可能に配置され、この補助接点支えに係合突起４１が一体に形成されている。   The electromagnetic contactor 10 is provided with an auxiliary contact unit 40 as an optional component on the side surface. As shown in FIG. 3, the auxiliary contact unit 40 has an engagement protrusion 41 that engages with an engagement recess 26 a formed on the contact support 26 of the electromagnetic contactor 10 on the side surface facing the side surface of the electromagnetic contactor 10. A pair of upper and lower engaging claws 42 that are formed to protrude and engage with the engaging recess 36 of the second frame 11B are formed. Although not shown, the auxiliary contact unit 40 has an auxiliary contact support holding a movable contact in two stages in the front-rear direction so as to be movable, and an engagement protrusion 41 is formed integrally with the auxiliary contact support.

また、補助接点ユニット４０には、図４に示すように、正面の上端側に対向する側壁間に２段の階段状に補助接点端子部４３ａ及び４３ｂが形成されているとともに、正面の下端側にも２段の階段状に補助接点端子部４４ａ及び４４ｂが形成されている。
各補助接点端子部４３ａ，４３ｂ及び４４ａ，４４ｂのそれぞれは、図６に拡大図示するように、端子板４５と端子ねじ４６とを備えたねじ端子構造を有する。端子板４５は鉄材等の導電性金属材で製作されている。端子板４５には、図６で拡大図示するように、中央部に下方に突出する円筒部４７がバーリング加工によって形成されている。この円筒部４７の内周面には雌ねじ部４８が形成されている。
端子ねじ４６には、座金４９が回転自在に装着されている。この座金４９は、端子ねじ４６と別体とすることもできる。端子ねじ４６が雌ねじ部４８に螺合する。 Further, as shown in FIG. 4, the auxiliary contact unit 40 has auxiliary contact terminal portions 43a and 43b formed in a two-step shape between the side walls facing the upper end of the front, and the lower end of the front In addition, auxiliary contact terminal portions 44a and 44b are formed in two steps.
Each of the auxiliary contact terminal portions 43a, 43b and 44a, 44b has a screw terminal structure including a terminal plate 45 and a terminal screw 46 as shown in an enlarged view in FIG. The terminal board 45 is made of a conductive metal material such as iron. As shown in an enlarged view in FIG. 6, the terminal plate 45 is formed with a cylindrical portion 47 projecting downward at the center by burring. A female thread portion 48 is formed on the inner peripheral surface of the cylindrical portion 47.
A washer 49 is rotatably attached to the terminal screw 46. The washer 49 can be separated from the terminal screw 46. The terminal screw 46 is screwed into the female screw portion 48.

各端子板４５には、図７に拡大図示するように、雌ねじ部４８の中心を通って半径方向の左右方向に延長する断面半円形状の突条５０が形成されている。この突条５０は、回り止め機構ＲＳを形成する第１係合部となるものである。突条５０は端子板４５をプレス加工する際に、下面側からエンボス加工によって形成される。
そして、補助接点ユニット４０の補助接点端子部４３ａ及び４４ａには図５に示すように、補助接点ユニット４０へスプリング端子による接続を可能とするアドオン部品となる長さの短い端子変換ユニット５１Ａが接続される。また、補助接点端子部４３ｂ及び４４ｂには、同様に補助接点ユニット４０へスプリング端子による接続を可能とするアドオン部品となる長さの長い端子変換ユニット５１Ｂが接続される。 As shown in an enlarged view in FIG. 7, each terminal plate 45 is formed with a semicircular ridge 50 having a semicircular cross section extending in the left-right direction in the radial direction through the center of the female screw portion 48. This protrusion 50 becomes the 1st engaging part which forms rotation prevention mechanism RS. When the terminal board 45 is pressed, the protrusion 50 is formed by embossing from the lower surface side.
Then, as shown in FIG. 5, a short terminal conversion unit 51A serving as an add-on component that enables connection to the auxiliary contact unit 40 by a spring terminal is connected to the auxiliary contact terminal portions 43a and 44a of the auxiliary contact unit 40. Is done. Similarly, the auxiliary contact terminal portions 43b and 44b are connected to a terminal conversion unit 51B having a long length, which is an add-on component that can be connected to the auxiliary contact unit 40 by a spring terminal.

端子変換ユニット５１Ａは、例えば合成樹脂材で成型された絶縁部材５２を有する。この絶縁部材５２は、図５に示すように、上下方向に延長する中央隔壁５２ａと、この中央隔壁５２ａの上端から左右方向に延長する上板部５２ｂと、中央隔壁５２ａの下端から左右方向に延長する下板部５２ｃと、中央隔壁５２ａから左右方向に延長し、下板部５２ｃに所定の間隙を介して上方から対向する環状周壁５２ｄとを備えている。
中央隔壁５２ａの背面側には、図６に示すように、後方に突出する係合突起５２ａ１が形成されている。この係合突起５２ａ１は後述するカバー６１の係合孔６７に係合する。 The terminal conversion unit 51A includes an insulating member 52 molded from, for example, a synthetic resin material. As shown in FIG. 5, the insulating member 52 includes a central partition wall 52a extending in the vertical direction, an upper plate portion 52b extending in the left-right direction from the upper end of the central partition wall 52a, and a left-right direction from the lower end of the central partition wall 52a. A lower plate portion 52c that extends, and an annular peripheral wall 52d that extends from the central partition wall 52a in the left-right direction and faces the lower plate portion 52c from above via a predetermined gap are provided.
As shown in FIG. 6, an engagement protrusion 52a1 protruding rearward is formed on the back side of the central partition wall 52a. The engagement protrusion 52a1 engages with an engagement hole 67 of the cover 61 described later.

上板部５２ｂは、中央隔壁５２ａの上端における前端側に連結されており、中央隔壁５２ａの上面に対して所定の間隙を開けて対向している。この上板部５２ｂには、図６に示すように後述する被接続端子５４のＵ字状導電板部５４ｂに係合するフック部５２ｂ１が形成されている。
下板部５２ｃは、中央隔壁５２ａの下端面における前方側に連結され、図７に示すように、前端縁が断面円弧状に湾曲された案内部５２ｃ１とされている。
環状周壁５２ｄは、図７に示すように、下板部５２ｃの上方側に所定の間隙を挟んで対向する底壁部５２ｄ１と、前面壁部５２ｄ２と、上面壁部５２ｄ３と、背面壁部５２ｄ４とを備えている。 The upper plate portion 52b is connected to the front end side at the upper end of the central partition wall 52a, and is opposed to the upper surface of the central partition wall 52a with a predetermined gap. As shown in FIG. 6, the upper plate portion 52b is formed with a hook portion 52b1 that engages with a U-shaped conductive plate portion 54b of a connected terminal 54 described later.
The lower plate portion 52c is connected to the front side of the lower end surface of the central partition wall 52a, and as shown in FIG. 7, is a guide portion 52c1 whose front end edge is curved in a cross-sectional arc shape.
As shown in FIG. 7, the annular peripheral wall 52d has a bottom wall portion 52d1, a front wall portion 52d2, an upper surface wall portion 52d3, and a rear wall portion 52d4 that are opposed to each other with a predetermined gap above the lower plate portion 52c. And.

前面壁部５２ｄ２は、底壁部５２ｄ１の前端から上方に延長し、絶縁部材５２の下板部５２ｃの案内部５２ｃ１と所定間隙を保って対向している。この前面壁部５２ｄ２には、前方に突出する係合凸部５２ｄ５が形成されている。
上面壁部５２ｄ３は前面壁部５２ｄ２の上端から後方に底壁部５２ｄ１と略平行に延長する板部５２ｄ６とこの板部５２ｄ６の後方端から斜め上方に延長する傾斜板部５２ｄ７とで構成されている。
背面壁部５２ｄ４は、上面壁部５２ｄ３の傾斜板部５２ｄ７の後方端から下方に底壁部５２ｄ１の後端まで延長している。 The front wall portion 52d2 extends upward from the front end of the bottom wall portion 52d1, and faces the guide portion 52c1 of the lower plate portion 52c of the insulating member 52 with a predetermined gap therebetween. The front wall 52d2 is formed with an engaging protrusion 52d5 that protrudes forward.
The upper surface wall portion 52d3 includes a plate portion 52d6 extending rearward from the upper end of the front wall portion 52d2 substantially in parallel with the bottom wall portion 52d1, and an inclined plate portion 52d7 extending obliquely upward from the rear end of the plate portion 52d6. Yes.
The rear wall portion 52d4 extends downward from the rear end of the inclined plate portion 52d7 of the upper surface wall portion 52d3 to the rear end of the bottom wall portion 52d1.

また、絶縁部材５２は、図６及び図７に示すように、鉄材等の導電性金属材で形成された被接続端子５４に装着されている。この被接続端子５４は、端子部５４ａとこれに連続するＵ字状導電板部５４ｂとで断面杓状に形成されている。
端子部５４ａは、上下方向に延長する平坦な板状に形成され、下端に、図６で拡大図示するように、端子ねじ４６を挿通可能な貫通孔５４ａ１が形成されている。また、端子部５４ａには、図７で拡大図示するように、背面側に貫通孔５４ａ１の中心を通って半径方向の左右方向に延長する断面三角形状の係合溝５４ｄが形成されている。この係合溝５４ｄは、補助接点端子部４３ａ及び４４ａの端子板４５に形成された突条５０に係合して回り止め機構ＲＳの第２係合部を構成する。 Further, as shown in FIGS. 6 and 7, the insulating member 52 is attached to a connected terminal 54 formed of a conductive metal material such as an iron material. The connected terminal 54 is formed of a terminal portion 54a and a U-shaped conductive plate portion 54b continuous with the terminal portion 54a in a bowl shape.
The terminal portion 54a is formed in a flat plate shape extending in the vertical direction, and a through hole 54a1 through which the terminal screw 46 can be inserted is formed at the lower end, as shown in an enlarged view in FIG. Further, as shown in an enlarged view in FIG. 7, the terminal portion 54a is formed with an engagement groove 54d having a triangular cross section extending in the left-right direction in the radial direction through the center of the through hole 54a1 on the back side. The engaging groove 54d is engaged with the protrusion 50 formed on the terminal plate 45 of the auxiliary contact terminal portions 43a and 44a to constitute a second engaging portion of the rotation preventing mechanism RS.

Ｕ字状導電板部５４ｂは、端子部５４ａの上端から後方に延長する下板部５４ｂ１と、この下板部５４ｂ１の後端から上方に延長する背面板部５４ｂ２と、この背面板部５４ｂ２の上端から前方に下板部５４ｂ１より前方に延長する上板部５４ｂ３とを備えている。背面板部５４ｂ２の左側面には、図５に示すように、左方に突出する係合板部５４ｂ５ａが形成されている。背面板部５４ｂ２の下板部５４ｂ１側には絶縁部材５２の中央隔壁５２ａの背面側に形成された係合突起５２ａ１を貫通させる貫通孔５４ｂ２ｂが形成されている。また、上板部５４ｂ３には、後端側に絶縁部材５２のフック部５２ｂ１が係合する係合孔５４ｂ３ａが形成されている。   The U-shaped conductive plate portion 54b includes a lower plate portion 54b1 extending rearward from the upper end of the terminal portion 54a, a back plate portion 54b2 extending upward from the rear end of the lower plate portion 54b1, and the back plate portion 54b2. An upper plate portion 54b3 extending forward from the lower plate portion 54b1 from the upper end is provided. As shown in FIG. 5, an engagement plate portion 54b5a protruding leftward is formed on the left side surface of the back plate portion 54b2. A through hole 54b2b is formed on the lower plate portion 54b1 side of the back plate portion 54b2 to allow the engagement protrusion 52a1 formed on the back surface side of the central partition wall 52a of the insulating member 52 to pass therethrough. Further, the upper plate portion 54b3 is formed with an engagement hole 54b3a for engaging the hook portion 52b1 of the insulating member 52 on the rear end side.

そして、被接続端子５４のＵ字状導電板部５４ｂ内に絶縁部材５２が保持されている。この場合、Ｕ字状導電板部５４ｂの前方側から絶縁部材５２の環状周壁５２ｄの背面板部５２ｄ４を背面板部５４ｂ２に対向させ、且上板部５２ｃｂの下面を上板部５４ｂ３の上面に対向させた状態で、絶縁部材５２を押し込むことにより、係合突起５２ａ１が図６に示すように背面板部５４ｂ２の貫通孔５４ｂ２ｂを通じて外側に突出し、フック部５２ｂ１が係合孔５４ｂ３ａに係合する。これによって、絶縁部材５２が被接続端子５４のＵ字状導電板部５４ｂ内に保持される。
この状態では、絶縁部材５２の左右側面は閉塞されることなく開放されており、これら左右側面から端子スプリング５５を絶縁部材５２に装着する。 The insulating member 52 is held in the U-shaped conductive plate portion 54 b of the connected terminal 54. In this case, the rear plate portion 52d4 of the annular peripheral wall 52d of the insulating member 52 is opposed to the rear plate portion 54b2 from the front side of the U-shaped conductive plate portion 54b, and the lower surface of the upper plate portion 52cb is set to the upper surface of the upper plate portion 54b3. When the insulating member 52 is pushed in the opposed state, the engaging protrusion 52a1 protrudes outward through the through hole 54b2b of the back plate portion 54b2 as shown in FIG. 6, and the hook portion 52b1 engages with the engaging hole 54b3a. . As a result, the insulating member 52 is held in the U-shaped conductive plate portion 54 b of the connected terminal 54.
In this state, the left and right side surfaces of the insulating member 52 are opened without being blocked, and the terminal spring 55 is attached to the insulating member 52 from these left and right side surfaces.

端子スプリング５５は、図７に示すように、底板部５５ａ、湾曲板部５５ｂ及び傾斜板部５５ｃを備えている。底板部５５ａは、後端側が環状周壁５２ｄの底壁部５２ｄ１と被接続端子５４のＵ字状導電板部５４ｂの下板部５４ｂ１との間に挟持されて前方に延長している。湾曲板部５５ｂは、底板部５５ａの前端から折り曲げられて環状周壁５２ｄの前面壁部５２ｄ２の係合凸部５２ｄ５と絶縁部材５２の下板部５２ｃの案内部５２ｃ１との間を通って上方側に延長している。傾斜板部５５ｃは、湾曲板部５５ｂの上端から後上方にドッグレッグ状に屈曲されて延長され、先端がＵ字状導電板部５４ｂの係合板部５４ｂ７の後端側に係合されている。   As shown in FIG. 7, the terminal spring 55 includes a bottom plate portion 55a, a curved plate portion 55b, and an inclined plate portion 55c. The bottom plate portion 55a is sandwiched between the bottom wall portion 52d1 of the annular peripheral wall 52d and the lower plate portion 54b1 of the U-shaped conductive plate portion 54b of the connected terminal 54 and extends forward. The curved plate portion 55b is bent from the front end of the bottom plate portion 55a and passes between the engagement convex portion 52d5 of the front wall portion 52d2 of the annular peripheral wall 52d and the guide portion 52c1 of the lower plate portion 52c of the insulating member 52. It is extended to. The inclined plate portion 55c is bent and extended in a dogleg shape from the upper end of the curved plate portion 55b to the rear upper side, and the tip is engaged with the rear end side of the engagement plate portion 54b7 of the U-shaped conductive plate portion 54b. .

この端子スプリング５５と、被接続端子５４のＵ字状導電板部５４ｂの上板部５４ｂ３とでスプリング端子５６が構成されている。
また、下段側の補助接点端子部４３ｂ及び４４ｂに装着する端子変換ユニット５１Ｂは、上段側の補助接点端子部４３ａ及び４４ａに装着する端子変換ユニット５１Ａに対して被接続端子５４の長さが長く設定されていることを除いては同一構成とされている。したがって、図５に示すように、端子変換ユニット５１Ａ及び５１Ｂを補助接点端子部４３ａ，４４ａ及び４３ｂ，４４ｂに装着したときに、端子スプリング５５の係止位置が上下方向で重ならないようにしている。
そして、補助接点ユニット４０の補助接点端子部４３ａ，４４ａ及び４３ｂ，４４ｂに個別に端子変換ユニット５１Ａ及び５１Ｂを装着した状態で、片側の２つの端子変換ユニット５１Ａ及び５１Ｂを同時に覆うようにカバー６１が装着されている。 The terminal spring 55 and the upper plate portion 54b3 of the U-shaped conductive plate portion 54b of the connected terminal 54 constitute a spring terminal 56.
The terminal conversion unit 51B mounted on the lower auxiliary contact terminal portions 43b and 44b has a longer length of the connected terminal 54 than the terminal conversion unit 51A mounted on the upper auxiliary contact terminal portions 43a and 44a. The configuration is the same except that it is set. Therefore, as shown in FIG. 5, when the terminal conversion units 51A and 51B are attached to the auxiliary contact terminal portions 43a, 44a and 43b, 44b, the locking positions of the terminal springs 55 are prevented from overlapping in the vertical direction. .
Then, in a state in which the terminal conversion units 51A and 51B are individually mounted on the auxiliary contact terminal portions 43a, 44a and 43b and 44b of the auxiliary contact unit 40, the cover 61 covers the two terminal conversion units 51A and 51B on one side simultaneously. Is installed.

このカバー６１は、図８に示すように、端子変換ユニット５１Ａ及び５１Ｂを個別に収納する端子変換ユニット収納部６２Ａ及び６２Ｂが絶縁隔壁６３で区切られて形成されている。
端子変換ユニット収納部６２Ａには、図８に示すように、左側面板６２ａの内面に被接続端子５４のＵ字状導電板部５４ｂの背面板部５４ｂ２に形成された係合板部５４ｂ５が係合する係合溝６２ｂが形成されている。
また、端子変換ユニット収納部６２Ａの上部には補助接点ユニット４０の補助接点端子部４３ａを覆う庇部６４が形成されている。庇部６４には、補助接点ユニット４０の側壁４０ａ及び４０ｂの上端に形成された係合部４０ｃが係合する係合長孔６４ｂが貫通して形成されている。 As shown in FIG. 8, the cover 61 is formed by separating terminal conversion unit storage portions 62 </ b> A and 62 </ b> B that individually store the terminal conversion units 51 </ b> A and 51 </ b> B with an insulating partition wall 63.
As shown in FIG. 8, an engagement plate portion 54b5 formed on the back plate portion 54b2 of the U-shaped conductive plate portion 54b of the connected terminal 54 is engaged with the terminal conversion unit housing portion 62A as shown in FIG. An engaging groove 62b is formed.
Further, a flange portion 64 that covers the auxiliary contact terminal portion 43a of the auxiliary contact unit 40 is formed on the upper portion of the terminal conversion unit housing portion 62A. An engagement long hole 64b is formed through the flange portion 64 so as to engage with an engagement portion 40c formed at the upper ends of the side walls 40a and 40b of the auxiliary contact unit 40.

また、端子変換ユニット収納部６２Ｂの下板部６２ｃには、図６に示すように、工具の挿通が不能な幅の長溝６６が形成され、この長溝６６の前端部の底面に端子変換ユニット５１Ｂの下面に形成された係合突起５２ａ１が係合する係合孔６７が貫通して形成されている。なお、図６に示すように、カバー６１の端子変換ユニット収納部６２Ｂの底面板部６２ｃの係合孔６７を形成する端部の上面にフック部６２ｄが形成されている。このフック部６２ｄは、カバー６１を装着する際に、端子変換ユニット５１Ｂに形成された係合突起５２ａ１を乗り越えてスナップフィット結合する。   Further, as shown in FIG. 6, a long groove 66 having a width incapable of inserting a tool is formed in the lower plate portion 62c of the terminal conversion unit storage portion 62B, and the terminal conversion unit 51B is formed on the bottom surface of the front end portion of the long groove 66. An engaging hole 67 through which an engaging protrusion 52a1 formed on the lower surface of the engaging member 52 engages is formed therethrough. As shown in FIG. 6, a hook portion 62d is formed on the upper surface of the end portion where the engagement hole 67 of the bottom plate portion 62c of the terminal conversion unit storage portion 62B of the cover 61 is formed. When the cover 61 is attached, the hook portion 62d gets over the engagement protrusion 52a1 formed on the terminal conversion unit 51B and is snap-fit coupled.

さらに、端子変換ユニット収納部６２Ａ及び６２Ｂの前面の上端側には、補助端子接続ケーブル（図示せず）の単線、撚り線、フェルール端子付き撚り線等の導電性接続部を挿入する挿通孔６５ａが２つの端子スプリング５５と対向するように２つずつ形成されている。また、端子変換ユニット収納部６２Ａ及び６２Ｂの前面における挿通孔６５ａの下側には端子スプリング５５を押圧して導電性接続部から離間させるクランプ解除工具を挿通する挿通孔６５ｂが２つずつ貫通して形成されている。   Furthermore, an insertion hole 65a for inserting a conductive connection portion such as a single wire of an auxiliary terminal connection cable (not shown), a stranded wire, a stranded wire with a ferrule terminal, or the like on the upper end side of the front surface of the terminal conversion unit housing portions 62A and 62B. Are formed two by two so as to face the two terminal springs 55. In addition, two insertion holes 65b are inserted under the insertion holes 65a on the front surfaces of the terminal conversion unit housing parts 62A and 62B. The insertion holes 65b pass through the clamp release tool that presses the terminal spring 55 and separates it from the conductive connection part. Is formed.

次に、本発明の動作を説明する。
図３及び図４に示すねじ端子を有する補助接点ユニット４０を、スプリング端子を有する補助接点ユニットとして使用するには、先ず、図５に示すように補助接点ユニット４０の補助接点端子部４３ａ，４４ａ及び４３ｂ，４４ｂに個別に端子変換ユニット５１Ａ及び５１Ｂを装着する。
補助接点端子部４３ａ，４４ａ及び４３ｂ，４４ｂに対して端子変換ユニット５１Ａ及び５１Ｂを装着するには、先ず、補助接点端子部４３ａ，４４ａ及び４３ｂ，４４ｂの端子板４５の雌ねじ部４８に螺合している端子ねじ４６を座金４９とともに取り外す。この状態で、端子変換ユニット５１Ｂの被接続端子５４の端子部５４ａを補助接点端子部４３ｂ，４４ｂの端子板４５上に載置する。 Next, the operation of the present invention will be described.
In order to use the auxiliary contact unit 40 having the screw terminals shown in FIGS. 3 and 4 as an auxiliary contact unit having a spring terminal, first, auxiliary contact terminal portions 43a and 44a of the auxiliary contact unit 40 as shown in FIG. And terminal conversion units 51A and 51B are individually attached to 43b and 44b.
In order to attach the terminal conversion units 51A and 51B to the auxiliary contact terminal portions 43a, 44a and 43b, 44b, first, the auxiliary contact terminal portions 43a, 44a and 43b, 44b are screwed into the female screw portions 48 of the terminal plate 45. The terminal screw 46 is removed together with the washer 49. In this state, the terminal portion 54a of the connected terminal 54 of the terminal conversion unit 51B is placed on the terminal plate 45 of the auxiliary contact terminal portions 43b and 44b.

このとき、端子板４５に形成された突条５０に被接続端子５４の端子部５４ａに形成された係合溝５４ｄを係合させる。端子板４５は、側壁４０ａ，４０ｂによって回転不能に固定されているので、図５に示すように、端子変換ユニット５１Ｂが補助接点ユニット４０の正面に対して直角な上下方向に延長するように位置決めされる。
この状態で、座金４９を装着した端子ねじ４６を被接続端子５４の貫通孔５４ａ１を通じて端子板４５の雌ねじ部４８に螺合させて締め付ける。 At this time, the engaging groove 54 d formed in the terminal portion 54 a of the connected terminal 54 is engaged with the protrusion 50 formed on the terminal plate 45. Since the terminal plate 45 is fixed so as not to rotate by the side walls 40a and 40b, the terminal conversion unit 51B is positioned so as to extend in the vertical direction perpendicular to the front surface of the auxiliary contact unit 40 as shown in FIG. Is done.
In this state, the terminal screw 46 fitted with the washer 49 is screwed into the female screw portion 48 of the terminal plate 45 through the through hole 54a1 of the connected terminal 54 and tightened.

このとき、端子ねじ４６の頭部に座金４９の前面が接触し、座金４９の背面が被接続端子５４の端子部５４ａの上面に接触させた状態で、係合溝５４ｄが突条５０に係合を開始するまでの間は、作業者が端子変換ユニット５１Ｂを手で保持しておく。その後は、作業者が端子変換ユニット５１Ｂの保持を解除して、端子ねじ４６の締め付けを行ったときに、係合溝５４ｄと突条５０とが係合していることにより、位置決めと回り止めの双方の機能を発揮して、端子ねじ４６の回転によって端子変換ユニット５１Ｂが回転することなく正確に位置決めされて固定される。したがって、補助接点端子部４３ｂ，４４ｂに対する端子変換ユニット５１Ｂの装着作業を短時間で容易に行うことができる。   At this time, the engaging groove 54 d is engaged with the protrusion 50 in a state where the front surface of the washer 49 is in contact with the head of the terminal screw 46 and the back surface of the washer 49 is in contact with the upper surface of the terminal portion 54 a of the connected terminal 54. The worker holds the terminal conversion unit 51B by hand until the start of the registration. Thereafter, when the operator releases the holding of the terminal conversion unit 51B and tightens the terminal screw 46, the engaging groove 54d and the protrusion 50 are engaged, so that positioning and rotation prevention are achieved. The terminal conversion unit 51B is accurately positioned and fixed by the rotation of the terminal screw 46 without exhibiting both functions. Therefore, the mounting operation of the terminal conversion unit 51B with respect to the auxiliary contact terminal portions 43b and 44b can be easily performed in a short time.

この際、補助接点端子部４３ｂ，４４ｂの端子板４５に形成した突条５０が側面から見て半円形状に形成されており、被接続端子５４の端子部５４ａに形成した係合溝５４ｄが側面から見て三角形状に形成されている。このため、突条５０及び係合溝５４ｄの断面形状が正確に成型されていない場合であっても、三角形状の係合溝５４ｄのセンタリング機能によって位置決め及び回り止めを正確に行うことができる。   At this time, the protrusion 50 formed on the terminal plate 45 of the auxiliary contact terminal portions 43b and 44b is formed in a semicircular shape when viewed from the side, and the engagement groove 54d formed on the terminal portion 54a of the connected terminal 54 is formed. It is formed in a triangular shape when viewed from the side. For this reason, even when the cross-sectional shapes of the protrusion 50 and the engaging groove 54d are not accurately formed, the centering function of the triangular engaging groove 54d can perform positioning and rotation prevention accurately.

次いで、端子変換ユニット５１Ａを端子変換ユニット５１Ｂと同様の手順で補助接点端子部４３ａ，４４ａに装着する。この際に、突条５０と係合溝５４ｄとによって位置決め機能と回り止め機能とが発揮されて、補助接点端子部４３ａ，４４ａへの端子変換ユニット５１Ａの装着作業を短時間で容易に行うことができる。
このようにして、補助接点ユニット４０の補助接点端子部４３ａ，４４ａ及び４３ｂ，４４ｂに対して端子変換ユニット５１Ａ及び５１Ｂの装着を完了する。このとき、図５に示すように、端子変換ユニット５１Ａ及び５１Ｂが上下方向に延長した状態で正確に整列されて保持される。 Next, the terminal conversion unit 51A is attached to the auxiliary contact terminal portions 43a and 44a in the same procedure as the terminal conversion unit 51B. At this time, the positioning function and the anti-rotation function are exhibited by the protrusion 50 and the engaging groove 54d, and the mounting operation of the terminal conversion unit 51A to the auxiliary contact terminal portions 43a and 44a can be easily performed in a short time. Can do.
In this way, the attachment of the terminal conversion units 51A and 51B to the auxiliary contact terminal portions 43a, 44a and 43b and 44b of the auxiliary contact unit 40 is completed. At this time, as shown in FIG. 5, the terminal conversion units 51 </ b> A and 51 </ b> B are accurately aligned and held in a state of extending in the vertical direction.

この状態では、補助接点ユニット４０の補助接点端子部４３ａ，４３ｂ及び４４ａ，４４ｂ、端子変換ユニット５１Ａ及び５１Ｂの被接続端子５４及びスプリング端子５６がむき出しとなっている。このため、補助接点端子部４３ａ，４３ｂ及び４４ａ，４４ｂ、端子変換ユニット５１Ａ及び５１Ｂを覆うようにカバー６１を装着する。
このカバー６１の装着は、先ず、カバー６１の端子変換ユニット収納部６２Ａ及び６２Ｂを端子変換ユニット５１Ａ及び５１Ｂに対向させる。この状態で、カバー６１を補助接点ユニット４０の上下方向の中央部側に押し込むことにより、庇部６４に形成された係合長孔６４ｂに補助接点ユニット４０の左右側壁４０ａ及び４０ｂに形成された係合部４０ｃがスナップフィット結合により係合される。 In this state, the auxiliary contact terminal portions 43a, 43b and 44a, 44b of the auxiliary contact unit 40, the connected terminals 54 and the spring terminals 56 of the terminal conversion units 51A and 51B are exposed. For this reason, the cover 61 is mounted so as to cover the auxiliary contact terminal portions 43a, 43b and 44a, 44b and the terminal conversion units 51A and 51B.
When the cover 61 is attached, first, the terminal conversion unit housing portions 62A and 62B of the cover 61 are opposed to the terminal conversion units 51A and 51B. In this state, the cover 61 is pushed into the center of the auxiliary contact unit 40 in the vertical direction, so that the engagement long holes 64b formed in the flange 64 are formed on the left and right side walls 40a and 40b of the auxiliary contact unit 40. The engaging part 40c is engaged by snap-fit coupling.

これと同時に、端子変換ユニット５１Ｂの下面に形成されたフック部６２ｄが端子変換ユニット５１Ｂの底面に形成された係合突起５２ａ１を乗り越えて係合突起５２ａ１が係合孔６７にスナップフィット結合される。
さらに、端子変換ユニット５１Ａ及び５１ＢのＵ字状導電板部５４ｂに形成された係合板部５４ｂ５が端子変換ユニット収納部６２Ａ及び６２Ｂに形成された係合溝６２ｂに係合する。 At the same time, the hook portion 62d formed on the lower surface of the terminal conversion unit 51B gets over the engagement projection 52a1 formed on the bottom surface of the terminal conversion unit 51B, and the engagement projection 52a1 is snap-fit coupled to the engagement hole 67. .
Furthermore, the engaging plate part 54b5 formed in the U-shaped conductive plate part 54b of the terminal conversion units 51A and 51B engages with the engaging groove 62b formed in the terminal conversion unit storage parts 62A and 62B.

したがって、カバー６１が端子変換ユニット５１Ａ，５１Ｂを介して補助接点ユニット４０に取り外し不能に装着される。すなわち端子変換ユニット５１Ａ，５１Ｂの絶縁部材５２に形成された係合突起５２ａ１がカバー６１の端子変換ユニット収納部６２Ｂの下面に形成された工具の挿入が不能な長溝６６の底部に形成された係合孔６７に係合されている。このため、長溝６６内に工具を挿入できないことから係合孔６７と係合突起５２ａ１との係合状態を離脱させることができず、長溝６６、係合孔６７、フック部６２ｄで抜け止め機構を構成し、カバー６１の取り外しが不能となる。   Therefore, the cover 61 is detachably attached to the auxiliary contact unit 40 via the terminal conversion units 51A and 51B. That is, the engagement protrusion 52a1 formed on the insulating member 52 of the terminal conversion units 51A and 51B is formed on the bottom of the long groove 66 on the lower surface of the terminal conversion unit storage portion 62B of the cover 61 where the tool cannot be inserted. The engagement hole 67 is engaged. For this reason, since the tool cannot be inserted into the long groove 66, the engagement state between the engagement hole 67 and the engagement protrusion 52a1 cannot be released, and the long groove 66, the engagement hole 67, and the hook portion 62d prevent the removal. The cover 61 cannot be removed.

なお、カバー６１に覆われた端子変換ユニット５１Ａ及び５１Ｂの何れか１つが故障した場合には、カバー６１を壊して故障した端子部品を交換してから新たなカバー６１を装着する。
このように、カバー６１を装着することにより、図１に示す状態となり、補助接点ユニット４０の補助接点端子部４３ａ，４３ｂ及び４４ａ，４４ｂ、端子変換ユニット５１Ａ及び５１Ｂの導電部が全てカバー６１で覆われる。このため、感電事故を未然に防止することができる。また、端子変換ユニット５１Ａ及び５１Ｂがカバー６１内に形成した絶縁隔壁６３によって絶縁されるので、各端子部品間の絶縁を確実に行うことができる。 When any one of the terminal conversion units 51A and 51B covered by the cover 61 breaks down, the cover 61 is broken and the broken terminal parts are replaced, and then a new cover 61 is attached.
Thus, by attaching the cover 61, the state shown in FIG. 1 is obtained, and the auxiliary contact terminal portions 43a, 43b and 44a, 44b of the auxiliary contact unit 40 and the conductive portions of the terminal conversion units 51A and 51B are all covered by the cover 61. Covered. For this reason, an electric shock accident can be prevented in advance. Further, since the terminal conversion units 51A and 51B are insulated by the insulating partition wall 63 formed in the cover 61, the insulation between the terminal components can be reliably performed.

そして、ねじ端子を有する補助接点ユニット４０に端子変換ユニット５１Ａ及び５１Ｂとカバー６１を装着することにより、ねじ端子を有する補助接点ユニットを、スプリング端子を備えた補助接点ユニットとすることができる。
この補助接点ユニット４０を、電磁接触器１０の側面に、係合突起４１を第２フレーム１１Ｂの開口部２７を通じて接点支え２６の係合凹部２６ａに係合させるとともに、係合爪４２を第２フレーム１１Ｂの係合凹部３６に係合させることにより、電磁接触器１０に装着することができる。このとき、補助接点ユニット４０の内部の接点支え（図示せず）と電磁接触器１０内の接点支え２６とが係合凹部２６ａと係合突起４１とによって連結されるので、電磁接触器１０の接点支え２６と補助接点ユニット４０の接点支えとを同期して動作させることができる。 Then, by attaching the terminal conversion units 51A and 51B and the cover 61 to the auxiliary contact unit 40 having a screw terminal, the auxiliary contact unit having the screw terminal can be made an auxiliary contact unit having a spring terminal.
The auxiliary contact unit 40 is engaged with the side surface of the electromagnetic contactor 10 and the engagement protrusion 41 is engaged with the engagement recess 26a of the contact support 26 through the opening 27 of the second frame 11B. By engaging with the engaging recess 36 of the frame 11B, the magnetic contactor 10 can be mounted. At this time, the contact support (not shown) inside the auxiliary contact unit 40 and the contact support 26 in the electromagnetic contactor 10 are connected by the engagement recess 26a and the engagement protrusion 41, so that the electromagnetic contactor 10 The contact support 26 and the contact support of the auxiliary contact unit 40 can be operated synchronously.

この状態で、カバー６１の挿通孔６５ａ及び６５ｂに接続ケーブル（図示せず）の単線、撚り線、フェルール端子付き撚り線等の導電性接続部を挿入して、端子スプリング５５をＵ字状導電板部５４ｂから離間させる。これにより、端子スプリング５５の先端が導電性接続部に接触して、導電性接続部が端子スプリング５５とＵ字状導電板部５４ｂとの間で挟持される。   In this state, a conductive connection portion such as a single wire of a connection cable (not shown), a stranded wire, a stranded wire with a ferrule terminal, or the like is inserted into the insertion holes 65a and 65b of the cover 61, and the terminal spring 55 is made to be U-shaped. Separated from the plate portion 54b. Thereby, the front-end | tip of the terminal spring 55 contacts an electroconductive connection part, and an electroconductive connection part is clamped between the terminal spring 55 and the U-shaped electroconductive board part 54b.

このとき、接続ケーブルを端子スプリング５５及びＵ字状導電板部５４ｂ間に挟持させる際に、大きな力が必要となる。このため端子変換ユニット５１Ａ及び５１Ｂの被接続端子５４の端子部５４ａとは反対側に片持ち荷重が掛かる。しかしながら、Ｕ字状導電板部５４ｂの背面板部５４ｂ２の係合板部５４ｂ５がカバー６１の端子変換ユニット収納部６２Ａ及び６２Ｂの内面に形成された係合溝６２ｂに係合している。このため、端子変換ユニット５１Ａ及び５１Ｂに掛かる片持ち荷重をカバー６１に分散させて支持することができ、被接続端子５４の端子部５４ａの変形を防止することができる。
また、スプリング端子５６から接続ケーブルの導電性接続部を取り外すには、工具挿通孔６５ｂにマイナスのネジ回し等の工具を差し込んで端子スプリング５５の傾斜板部５５ｃを接続ケーブルの電気的接続部から離間させてロック状態を解除することにより、導電性接続部を引き出すことができる。 At this time, a large force is required to clamp the connection cable between the terminal spring 55 and the U-shaped conductive plate portion 54b. For this reason, a cantilever load is applied to the opposite side of the terminal portion 54a of the connected terminal 54 of the terminal conversion units 51A and 51B. However, the engagement plate portion 54b5 of the back plate portion 54b2 of the U-shaped conductive plate portion 54b is engaged with the engagement groove 62b formed on the inner surfaces of the terminal conversion unit storage portions 62A and 62B of the cover 61. For this reason, the cantilever load applied to the terminal conversion units 51A and 51B can be dispersed and supported by the cover 61, and deformation of the terminal portion 54a of the connected terminal 54 can be prevented.
Further, in order to remove the conductive connection portion of the connection cable from the spring terminal 56, a tool such as a screwdriver is inserted into the tool insertion hole 65b to connect the inclined plate portion 55c of the terminal spring 55 from the electrical connection portion of the connection cable. By releasing the lock state by separating the conductive connection portion, the conductive connection portion can be pulled out.

なお、上記実施形態では、端子板４５に突条５０を形成し、被接続端子５４に係合溝５４ｄを形成した場合について説明したが、これに限定されるものではなく、端子板４５に係合溝を形成し、被接続端子５４に突条を形成するようにしてもよい。
さらには、端子板４５に円筒部４７を挟んで突条と係合溝を形成し、被接続端子５４に突条に対向する係合溝と係合溝に対向する突条を形成するようにしてもよい。
さらに、突条５０及び係合溝５４ｄの延長方向は任意に設定することができ、必ずしも端子ねじ４６の中心を通る必要はない。突条５０の断面形状と係合溝５４ｄの断面形状も互いに係合できれば任意の断面形状とすることができる。 In the above-described embodiment, the case where the protrusion 50 is formed on the terminal plate 45 and the engaging groove 54d is formed on the connected terminal 54 has been described, but the present invention is not limited to this. A joint groove may be formed, and a protrusion may be formed on the connected terminal 54.
Furthermore, a protrusion and an engaging groove are formed on the terminal plate 45 with the cylindrical portion 47 sandwiched therebetween, and an engaging groove and a protrusion opposing the engaging groove are formed on the connected terminal 54. May be.
Furthermore, the extending direction of the protrusion 50 and the engaging groove 54d can be arbitrarily set, and does not necessarily pass through the center of the terminal screw 46. The cross-sectional shape of the protrusion 50 and the cross-sectional shape of the engaging groove 54d can be any cross-sectional shape as long as they can be engaged with each other.

また、上記実施形態では、図５に示すように、端子変換ユニット５１Ａ及び５１Ｂを補助接点ユニット４０の補助接点端子部４３ａ，４３ｂ及び４４ａ、４４ｂに装着した状態で、端子変換ユニット５１Ｂが端子変換ユニット５１Ａの上端又は下端から完全に露出している場合について説明した。しかしながら、本発明はこれに限定されるものではなく、端子変換ユニット５１Ｂの露出領域をカバー６１の挿通孔６５ａ及び６５ｂを外部に望ませることができる程度に狭めるようにしてもよい。   In the above embodiment, as shown in FIG. 5, the terminal conversion unit 51B is connected to the terminal conversion unit 51B while the terminal conversion units 51A and 51B are attached to the auxiliary contact terminal portions 43a, 43b and 44a, 44b of the auxiliary contact unit 40. The case where the unit 51A is completely exposed from the upper end or the lower end has been described. However, the present invention is not limited to this, and the exposed area of the terminal conversion unit 51B may be narrowed to such an extent that the insertion holes 65a and 65b of the cover 61 can be desired outside.

また、上記実施形態では、電磁接触器１０に装着する補助接点ユニット４０に端子変換ユニット５１Ａ及び５１Ｂを接続する場合について説明したが、これに限定されるものではなく電磁接触器１０のねじ端子に端子変換ユニット５１Ａ又は５１Ｂを装着するようにしてもよく、さらには電気機器のねじ端子をスプリング端子に変換する場合に本発明を適用することができる。
また、上記実施形態では、電気機器として、電磁接触器を適用した場合について説明したが、これに限定されるものではなく、熱動形過負荷継電器、電磁継電器、その他のねじ端子を有する電気機器に本発明を適用することができる。この場合、主端子のみを有し補助端子を有さない電気機器にも本発明を適用することができる。 Moreover, although the said embodiment demonstrated the case where the terminal conversion units 51A and 51B were connected to the auxiliary contact unit 40 with which the electromagnetic contactor 10 is mounted | worn, it is not limited to this, The screw terminal of the electromagnetic contactor 10 is used. The terminal conversion unit 51 </ b> A or 51 </ b> B may be attached, and the present invention can be applied to the case where the screw terminal of the electric device is converted into a spring terminal.
In the above embodiment, the case where an electromagnetic contactor is applied as an electrical device has been described. However, the present invention is not limited to this, and an electrical device having a thermal overload relay, an electromagnetic relay, and other screw terminals. The present invention can be applied to. In this case, the present invention can also be applied to an electric device having only a main terminal and no auxiliary terminal.

１０…電磁接触器、４０…補助接点ユニット、４０ａ，４０ｂ…側壁、４０ｃ…係合部、４１…係合突起、４２…係合爪、４３ａ，４３ｂ，４４ａ，４４ｂ…補助接点端子部、４５…端子板、４６…端子ねじ、４７…円筒部、４８…雌ねじ部、４９…座金、５０…突条、５１Ａ，５１Ｂ…端子変換ユニット、５２…絶縁部材、５２ａ１…係合突起、５４…被接続端子、５４ａ…端子部、５４ｂ…Ｕ字状導電板部、５４ｂ５…係合板部、５５…端子スプリング、５６…スプリング端子、６１…カバー、６２Ａ，６２Ｂ…端子変換ユニット収納部、６２ｂ…係合溝、６２ｄ…フック部、６３…絶縁隔壁、６４…庇部、６６…長溝、６７…係合孔   DESCRIPTION OF SYMBOLS 10 ... Electromagnetic contactor, 40 ... Auxiliary contact unit, 40a, 40b ... Side wall, 40c ... Engagement part, 41 ... Engagement protrusion, 42 ... Engagement claw, 43a, 43b, 44a, 44b ... Auxiliary contact terminal part, 45 ... Terminal plate, 46 ... Terminal screw, 47 ... Cylindrical part, 48 ... Female screw part, 49 ... Washer, 50 ... Projection, 51A, 51B ... Terminal conversion unit, 52 ... Insulating member, 52a1 ... Engagement projection, 54 ... Covered Connection terminal, 54a ... terminal portion, 54b ... U-shaped conductive plate portion, 54b5 ... engagement plate portion, 55 ... terminal spring, 56 ... spring terminal, 61 ... cover, 62A, 62B ... terminal conversion unit housing portion, 62b ... engagement Fitting groove, 62d ... hook part, 63 ... insulating partition, 64 ... collar part, 66 ... long groove, 67 ... engagement hole

Claims (9)

電気機器に形成されたねじ端子に電気的に接続する端子変換ユニットであって、
一端に形成した前記ねじ端子に接続される被接続端子と、該被接続端子の他端に配置したスプリング端子とを備えた端子変換ユニット。 A terminal conversion unit that is electrically connected to a screw terminal formed on an electrical device,
The terminal conversion unit provided with the to-be-connected terminal connected to the said screw terminal formed in one end, and the spring terminal arrange | positioned at the other end of this to-be-connected terminal. 前記ねじ端子及び前記被接続端子に互いに係合する回り止め機構を設けた請求項１に記載の端子変換ユニット。   The terminal conversion unit according to claim 1, further comprising a detent mechanism that engages the screw terminal and the connected terminal. 前記ねじ端子は、雌ねじ部を形成した端子板と、前記雌ねじ部に螺合する端子ねじとを有し、前記端子板の前記被接続端子との接合面に前記雌ねじ部の半径方向に延長する前記回り止め機構を構成する第１係合部が形成されている請求項２に記載の端子変換ユニット。   The screw terminal has a terminal plate formed with a female screw portion and a terminal screw screwed into the female screw portion, and extends in a radial direction of the female screw portion on a joint surface of the terminal plate with the connected terminal. The terminal conversion unit according to claim 2, wherein a first engagement portion constituting the rotation prevention mechanism is formed. 前記被接続端子は、前記端子ねじを挿通する挿通孔を有し、前記ねじ端子との接合面に前記第１係合部に係合する前記回り止め機構を構成する第２係合部が形成されている請求項３に記載の端子変換ユニット。   The to-be-connected terminal has an insertion hole through which the terminal screw is inserted, and a second engagement portion constituting the rotation preventing mechanism that engages with the first engagement portion is formed on a joint surface with the screw terminal. The terminal conversion unit according to claim 3. 前記第１係合部及び前記第２係合部は、一方は突条で構成され、他方は前記突条に係合する係合溝で構成されている請求項４に記載の端子変換ユニット。   5. The terminal conversion unit according to claim 4, wherein one of the first engagement portion and the second engagement portion is configured by a protrusion, and the other is configured by an engagement groove that engages with the protrusion. 前記被接続端子を前記ねじ端子に接続した状態で当該被接続端子を覆うカバーを備えている請求項１から５の何れか一項に記載の端子変換ユニット。   The terminal conversion unit according to any one of claims 1 to 5, further comprising a cover that covers the connected terminal in a state where the connected terminal is connected to the screw terminal. 前記ねじ端子は複数設けられ、複数のねじ端子に個別に前記被接続端子が接続され、前記カバーは複数の前記被接続端子を纏めて覆うように構成されている請求項６に記載の端子変換ユニット。   The terminal conversion according to claim 6, wherein a plurality of the screw terminals are provided, the connected terminals are individually connected to the plurality of screw terminals, and the cover is configured to collectively cover the plurality of connected terminals. unit. 前記被接続端子と前記カバーとの間に取り外し不能な抜け止め機構が設けられている請求項７に記載の端子変換ユニット。   The terminal conversion unit according to claim 7, wherein a non-removable retaining mechanism is provided between the connected terminal and the cover. 請求項１から８の何れか一項に記載の端子変換ユニットを備えた電気機器。   An electric device comprising the terminal conversion unit according to claim 1.
JP2018076210A 2018-04-11 2018-04-11 Terminal conversion unit and electrical equipment equipped with it Active JP6848926B2 (en)

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JP2018076210A JP6848926B2 (en) 2018-04-11 2018-04-11 Terminal conversion unit and electrical equipment equipped with it
FR1871875A FR3080226B1 (en) 2018-04-11 2018-11-27 Terminal conversion unit and electrical device including it
DE102018130266.5A DE102018130266A1 (en) 2018-04-11 2018-11-29 CLAMP CONVERSION UNIT AND ELECTRICAL DEVICE CONTAINING THIS
CN201811464376.2A CN110364395B (en) 2018-04-11 2018-12-03 Terminal conversion unit and electric device provided with same

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CN110364395A (en) 2019-10-22
FR3080226B1 (en) 2021-07-16

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