JP4613795B2

JP4613795B2 - Protective relay device

Info

Publication number: JP4613795B2
Application number: JP2005319806A
Authority: JP
Inventors: 敬太藤丸
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2005-11-02
Filing date: 2005-11-02
Publication date: 2011-01-19
Anticipated expiration: 2025-11-02
Also published as: JP2007129819A

Description

この発明は、継電器ユニットがケースに挿抜可能である保護継電装置に関し、とくに継電器ユニットとケースとの固定に関わるものである。 The present invention relates to a protective relay device in which a relay unit can be inserted into and removed from a case, and particularly relates to fixing of the relay unit and the case.

従来の保護継電装置は、継電器ユニットをケースに挿入する際に、継電器ユニットの端子台コネクタとケースの端子台コネクタとを嵌合させている。さらに、継電器ユニットの前面にカバーを取り付ける際に、カバー外周縁に設けられた保持具をケースの切り欠きに引っ掛けている（例えば、特許文献１参照。）。 In the conventional protective relay device, when the relay unit is inserted into the case, the terminal block connector of the relay unit and the terminal block connector of the case are fitted. Further, when the cover is attached to the front surface of the relay unit, a holder provided on the outer periphery of the cover is hooked on the notch of the case (see, for example, Patent Document 1).

特開２００１−３３９８１６号公報（図１３）JP 2001-339816 A (FIG. 13)

しかしながら、従来の技術では、非常に強い振動（例えば加速度１０Ｇ程度）が発生した場合、カバーの保持具をケースの切り欠きに引っ掛けた構造は実質的に固定機能を果たさず、端子台コネクタ同士の嵌合だけでは継電器ユニットとケースとを十分に固定できないおそれがある。そうなると、端子台コネクタ同士の嵌合が外れ、コネクタ接触不良を引き起こすという問題がある。 However, in the conventional technology, when a very strong vibration (for example, acceleration of about 10 G) is generated, the structure in which the cover holder is hooked on the notch of the case does not substantially perform the fixing function, and the terminal block connectors are not connected to each other. There is a possibility that the relay unit and the case cannot be fixed sufficiently only by fitting. When this happens, there is a problem in that the terminal block connectors are not fitted to each other, resulting in poor connector contact.

この発明は、上記のような問題点を解決するためになされたものであり、継電器ユニットがケースに挿抜可能である保護継電装置において、継電器ユニットとケースとの固定力の向上を図った保護継電装置を提供する。 The present invention has been made to solve the above-described problems, and in a protective relay device in which the relay unit can be inserted into and removed from the case, protection for improving the fixing force between the relay unit and the case A relay device is provided.

この発明における保護継電装置は、保護継電器を内蔵する継電器ユニットをケースのユニット挿入部に挿抜可能であり、継電器ユニットの端子台コネクタがケースの端子台コネクタに接続される保護継電装置において、継電器ユニットは正面側から見てケースのユニット挿入部よりも広い面積を有する正面部とユニット挿入部への挿抜動作において回動可能な挿抜支援レバーとを備え、ケースは挿抜支援レバーを係止できる係り部を備え、継電器ユニットの正面部には挿抜支援レバーの回動動作を可能とする開口部が設けられ、この開口部を覆うカバーを備え、このカバーとケースの係り部とを連結する連結手段を備えるものである。 In the protective relay device according to the present invention, the relay unit incorporating the protective relay can be inserted into and removed from the unit insertion portion of the case, and the terminal block connector of the relay unit is connected to the terminal block connector of the case. The relay unit includes a front portion having a larger area than the unit insertion portion of the case when viewed from the front side, and an insertion / removal support lever that can be rotated in the insertion / removal operation to the unit insertion portion, and the case can lock the insertion / removal support lever The relay unit is provided with an opening that allows the insertion / extraction support lever to rotate, and a cover that covers the opening is provided to connect the cover and the case's engagement part. Means are provided.

この発明によれば、継電器ユニットの正面部の面積を広くするとともに挿抜支援レバーの回動動作を可能とする開口部を設け、この開口部を覆うカバーとケースの係り部とを連結することによって、継電器ユニットとケースとの固定力が向上する。 According to this invention, by providing the opening part which makes the area of the front part of a relay unit wide, and enables rotation operation of the insertion / extraction support lever, the cover which covers this opening part, and the engagement part of a case are connected. The fixing force between the relay unit and the case is improved.

実施の形態１．
図１は、この発明の実施の形態１における保護継電装置の分解斜視図である。この保護継電装置は、大別して継電器ユニット１０とケース２０とカバー３０とから構成されている。継電器ユニット１０の本体部分１１はケース２０のユニット挿入部２１に挿入され、ケース２０は取り付け面４０に取り付けられる。 Embodiment 1 FIG.
1 is an exploded perspective view of a protective relay device according to Embodiment 1 of the present invention. This protective relay device is roughly divided into a relay unit 10, a case 20, and a cover 30. The main body portion 11 of the relay unit 10 is inserted into the unit insertion portion 21 of the case 20, and the case 20 is attached to the attachment surface 40.

継電器ユニット１０の本体部分１１には保護継電器が内蔵されており、その本体部分１１の背面には端子台コネクタ１２が設けられている。また、継電器ユニット１０の本体部分１１の両側面には挿抜支援レバー１３が左右一対として設けられている。さらに、継電器ユニット１０の正面部１４は、正面側から見てケース２０のユニット挿入部２１より広い面積を有する。この正面部１４には開口部１５が設けられており、この開口部１５によって挿抜支援レバー１３の回動動作が可能である。 A protective relay is built in the main body portion 11 of the relay unit 10, and a terminal block connector 12 is provided on the back surface of the main body portion 11. Further, a pair of left and right support levers 13 are provided on both side surfaces of the main body portion 11 of the relay unit 10 as a pair of left and right. Furthermore, the front part 14 of the relay unit 10 has a larger area than the unit insertion part 21 of the case 20 when viewed from the front side. The front portion 14 is provided with an opening 15 through which the insertion / extraction support lever 13 can be rotated.

ケース２０のユニット挿入部２１の背面には端子台コネクタ２２が設けられている。この端子台コネクタ２２と継電器ユニット１０の端子台コネクタ１２とは、一方がオス型構造であれば他方がメス型構造というように嵌合できるものである。また、ケース２０の外縁部２４には、挿抜支援レバー１３を回動動作したときに係止できる係り部２３が左右一対として設けられている。継電器ユニット１０をケース２０に挿入した際に、外縁部２４は継電器ユニット１０の正面部１４の裏面側と重ね合わされる。 A terminal block connector 22 is provided on the back surface of the unit insertion portion 21 of the case 20. If one of the terminal block connector 22 and the terminal block connector 12 of the relay unit 10 is a male structure, the other can be fitted as a female structure. Further, the outer edge portion 24 of the case 20 is provided with a pair of left and right engaging portions 23 that can be locked when the insertion / extraction assist lever 13 is rotated. When the relay unit 10 is inserted into the case 20, the outer edge portion 24 is overlapped with the back side of the front portion 14 of the relay unit 10.

カバー３０は例えばプラスチック製で、継電器ユニット１０の開口部１５を覆うものであり、継電器ユニット１０とケース２０との隙間に対する防塵機能を果たす。カバー３０と開口部１５とには互いに符合する段差をそれぞれ設けてもよい。連結手段３１は、例えばネジであり、カバー３０とケース２０の係り部２３とを連結するものである。これによって、カバー３０と連結手段３１とを介して、継電器ユニット１０とケース２０との固定力が向上する。 The cover 30 is made of plastic, for example, and covers the opening 15 of the relay unit 10, and fulfills a dustproof function against the gap between the relay unit 10 and the case 20. The cover 30 and the opening 15 may be provided with steps that coincide with each other. The connecting means 31 is, for example, a screw, and connects the cover 30 and the engaging portion 23 of the case 20. Thereby, the fixing force between the relay unit 10 and the case 20 is improved via the cover 30 and the connecting means 31.

図２を用いて継電器ユニット１０のケース２０への挿入動作を説明する。まず、挿抜支援レバー１３の持ち手１３ａを下げた状態において、継電器ユニット１０の正面部１４を押して本体部分１１をケース２０のユニット挿入部２１に挿入する。奥まで差し込む手前で、ケース２０の係り部２３の突部２３ａと挿抜支援レバー１３の持ち手１３ａの根元部が当接する（Ａ位置）。この突部２３ａと挿抜支援レバー１３の持ち手１３ａの根元部が当接するＡ位置を、ケース２０と継電器ユニット１０との引き寄せ準備位置とする。引き寄せ準備位置に到達したら、正面部１４を押す操作を止める。 The operation of inserting the relay unit 10 into the case 20 will be described with reference to FIG. First, in a state where the handle 13 a of the insertion / removal support lever 13 is lowered, the front portion 14 of the relay unit 10 is pushed to insert the main body portion 11 into the unit insertion portion 21 of the case 20. The protrusion 23a of the engaging portion 23 of the case 20 and the base portion of the handle 13a of the insertion / extraction support lever 13 come into contact with each other (A position). The position A where the protrusion 23 a and the base portion of the handle 13 a of the insertion / extraction support lever 13 abut is set as a drawing preparation position between the case 20 and the relay unit 10. When the drawing preparation position is reached, the operation of pushing the front portion 14 is stopped.

次に、挿抜支援レバー１３をＢ位置まで回動させると、挿抜支援レバー１３の切り欠き先端１３ｂと係り部２３が接触する。この接触した状態からさらに挿抜支援レバー１３をＣ位置まで回動させると、挿抜支援レバー１３の持ち手１３ａを力点、回動軸を支点、挿抜支援レバー１３の切り欠き先端１３ｂを作用点としたてこの原理によって、容易に継電器ユニット１０をケース２０に挿入できる。 Next, when the insertion / extraction support lever 13 is rotated to the B position, the notch tip 13b of the insertion / extraction support lever 13 and the engaging portion 23 come into contact with each other. When the insertion / removal support lever 13 is further rotated from the contacted state to the C position, the handle 13a of the insertion / removal support lever 13 is a power point, the rotation shaft is a fulcrum, and the notch tip 13b of the insertion / removal support lever 13 is an action point. The relay unit 10 can be easily inserted into the case 20 by the lever principle.

さらに図３に示すように、カバー３０によって継電器ユニット１０の開口部１５を覆い、連結手段３１によってカバー３０とケース２０の係り部２３とを連結する。ここで、連結手段３１がネジの場合、既存部品の流用の観点から例えばネジ直径２〜４ｍｍ、ネジ螺入深さ４〜８ｍｍが実用的な範囲として好ましい。継電器ユニット１０とケース２０との固定力の向上が顕著である。 Further, as shown in FIG. 3, the cover 30 covers the opening 15 of the relay unit 10, and the connecting means 31 connects the cover 30 and the engaging portion 23 of the case 20. Here, when the connecting means 31 is a screw, for example, a screw diameter of 2 to 4 mm and a screw screwing depth of 4 to 8 mm are preferable as a practical range from the viewpoint of diverting existing parts. The improvement of the fixing force between the relay unit 10 and the case 20 is remarkable.

なお、継電器ユニット１０のケース２０からの引抜動作においては、まず連結手段３１とカバー３０を取り外し、次に挿抜支援レバー１３を挿入動作とは反対方向に回動させればよい。挿抜支援レバー１３の持ち手１３ａの根元部と係り部２３のとが接触した状態から、さらに挿抜支援レバー１３を回動させると、挿抜支援レバー１３の持ち手１３ａを力点、持ち手１３ａと突部２３ａとの接触点を支点、回動軸を作用点としたてこの原理によって、容易に継電器ユニット１０をケース２０に引抜できる。 In the operation of pulling out the relay unit 10 from the case 20, first, the connecting means 31 and the cover 30 may be removed, and then the insertion / extraction support lever 13 may be rotated in the direction opposite to the insertion operation. When the insertion / removal support lever 13 is further rotated from the state in which the base portion of the handle 13a of the insertion / removal support lever 13 is in contact with the engaging portion 23, the handle 13a of the insertion / removal support lever 13 is used as a power point. The relay unit 10 can be easily pulled out of the case 20 by this principle using the contact point with the portion 23a as a fulcrum and the rotation shaft as an action point.

このようにして、継電器ユニット１０の正面部１４の面積を広くするとともに挿抜支援レバー１３の回動動作を可能とする開口部１５を設け、この開口部１５を覆うカバー３０とケース２０の係り部２３とを連結することによって、継電器ユニット１０とケース２０との固定力が向上する。したがって、継電器ユニット１０の端子台コネクタ１２とケース２０の端子台コネクタ２２の嵌合が外れることを防止できる。 In this way, the opening portion 15 that increases the area of the front portion 14 of the relay unit 10 and enables the insertion / extraction support lever 13 to rotate is provided, and the engagement portion between the cover 30 and the case 20 that covers the opening portion 15. As a result, the fixing force between the relay unit 10 and the case 20 is improved. Therefore, it is possible to prevent the terminal block connector 12 of the relay unit 10 and the terminal block connector 22 of the case 20 from being disengaged.

実施の形態１を説明するための保護継電装置の分解斜視図である。1 is an exploded perspective view of a protective relay device for explaining Embodiment 1; FIG. 実施の形態１における継電器ユニットの挿入動作を説明するための要部断面図である。FIG. 6 is a cross-sectional view of a main part for explaining the insertion operation of the relay unit in the first embodiment. 実施の形態１におけるカバーと係り部の連結を説明するための要部断面図である。FIG. 3 is a cross-sectional view of a main part for explaining the connection between the cover and the engaging part in the first embodiment.

Explanation of symbols

１０継電器ユニット、１２端子台コネクタ、１３挿抜支援レバー、１４正面部、１５開口部、２０ケース、２１ユニット挿入部、２２端子台コネクタ、２３係り部、３０カバー、３１連結手段。

DESCRIPTION OF SYMBOLS 10 Relay unit, 12 terminal block connector, 13 insertion / extraction assistance lever, 14 front part, 15 opening part, 20 case, 21 unit insertion part, 22 terminal block connector, 23 engaging part, 30 cover, 31 connection means.

Claims

In a protective relay device in which a relay unit having a built-in protective relay can be inserted into and removed from a unit insertion portion of the case, and the terminal block connector of the relay unit is connected to the terminal block connector of the case, the relay unit is connected from the front side. The case includes a front portion having a larger area than the unit insertion portion of the case, and an insertion / removal support lever that can be rotated in the insertion / removal operation to the unit insertion portion, and the case can engage the insertion / removal support lever. Provided with an opening that enables the insertion / extraction support lever to rotate, a cover that covers the opening, and a connecting means that connects the cover and the engaging portion. A protective relay device characterized by that.

2. The protective relay device according to claim 1, wherein the connecting means is a screw that is screwed into the engaging portion, and has a screw diameter of 2 to 4 mm and a screw screwing depth of 4 to 8 mm.