JPH02180010A - Current transformer - Google Patents

Abstract

PURPOSE:To simply and inexpensively connect a press fitment in surface contact with the side of a body to a clamping fitment for bringing the inner surface of a through-hole into surface contact with a conductor without processing an insertion hole formed in a clamping bolt and irrespective of the presence of insulation for the conductor to be fixed by providing the clamp fitment and said fixed fitment and clamping both fitments by the clamping bolt with said conductor put between both fitments. CONSTITUTION:A title current transformer includes a current transformer body 1 with a through-hole 1a therethrough, a pair of clamping fitments 11 whose intermediate portions make surface contact with the inner surface of the through-hole 1a when they are mounted with a conductor put therebetween, and a pair (constructed with four members) of press fitments 12 whose one sides make surface contact with the side of the current transformer body 1 when they are mounted with said clamping fitments 11 and said conductor 2 and the clamping fitments 11 are held between the other sides 12b of the press fitments 12, and a clamping bolt 13 is inserted into an insertion hole and clamped through a spring washer 14, a flat washer 15, and a nut 16. Hereby, the current transformer body 1 is fixed to the conducted 2. Thus, the current transformer body can be fixed without processing the conductor 2 and without being limited by the position of the conductor 2.

Description

【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、変流器本体の貫通穴に導体を挿通させるよう
にした変流器に係り、特に変流器本体と導体との結合構
造の改良に関するものである。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a current transformer in which a conductor is inserted through a through hole in a current transformer main body, and particularly relates to a current transformer in which a conductor is inserted into a through hole in a current transformer main body. This invention relates to improvements in the coupling structure with conductors.

（従来の技術） 従来、変流器本体の貫通穴に導体を挿通させるようにし
た変流器（貫通形変流器）において、変流器本体を導体
に固定する結合手段として第６図及び第７図に示す構造
のものが採用されていた。(Prior Art) Conventionally, in a current transformer (through-type current transformer) in which a conductor is inserted through a through hole in a current transformer body, the coupling means for fixing the current transformer body to the conductor is shown in FIG. The structure shown in Figure 7 was adopted.

すなわち、第６図及び第７図に示すように、変流器本体
１と導体２の結合構造は、変流器本体１の貫通穴１ａの
両端部にネジ穴を有する固定耳１ｂを設け、また、変流
器本体１の貫通穴１ａに挿通される導体２には、固定耳
１ｂのネジ穴１ｃと対応する位置に締付ボルトの挿通穴
２ａを設ける構成とし、導体２側から締付ボルト３を、
バネ座金４、平座金５を介在させ導体２の挿通穴２ａを
通し、固定耳１ｂのネジ穴１ｃに螺挿することにより変
流器本体１を導体２に結合するようにしたものである。That is, as shown in FIGS. 6 and 7, the coupling structure between the current transformer main body 1 and the conductor 2 includes fixing ears 1b having screw holes provided at both ends of the through hole 1a of the current transformer main body 1, In addition, the conductor 2 that is inserted into the through hole 1a of the current transformer body 1 is provided with a tightening bolt insertion hole 2a at a position corresponding to the screw hole 1c of the fixed ear 1b, and the conductor 2 is tightened from the conductor 2 side. bolt 3,
The current transformer body 1 is coupled to the conductor 2 by inserting a spring washer 4 and a flat washer 5 through the insertion hole 2a of the conductor 2, and screwing it into the screw hole 1c of the fixed lug 1b.

（発明が解決しようとする課題） しかしながら、上記した結合構造のものでは、導体２に
締付ボルトの挿通穴２ａを明けなければならないからそ
のための加工が必要になり、また、変流器本体１の固定
位置が導体２の締付ボルトの挿通穴２ａの位置により制
約されるため、変流器本体１の固定位置を変更したい場
合にはその対応が難しくなる。さらに、導体２に絶縁を
施こすような場合には、締付ボルトの挿通穴に加工を施
さなければならず高価なものとなる。(Problem to be Solved by the Invention) However, in the above-mentioned coupling structure, the insertion hole 2a for the tightening bolt must be made in the conductor 2, which requires processing, and the current transformer main body 1 Since the fixing position of the current transformer body 1 is restricted by the position of the insertion hole 2a of the tightening bolt of the conductor 2, it becomes difficult to change the fixing position of the current transformer main body 1. Furthermore, if the conductor 2 is to be insulated, the hole through which the tightening bolt is inserted must be machined, resulting in an expensive construction.

本発明は、上記のような欠点を除去するためになされた
もので、その目的とするところは、変流器本体を、導体
に締付ボルトの挿通穴を加工することなく、しかも、固
定する導体の絶縁の有無に関係なく、簡単、且つ安価に
して結合することができるようにした変流器を提供する
にある。The present invention has been made to eliminate the above-mentioned drawbacks, and its purpose is to fix the current transformer main body without drilling holes for the tightening bolts in the conductor. To provide a current transformer which can be simply and inexpensively connected regardless of whether conductors are insulated or not.

〔発明の構成〕[Structure of the invention]

（課題を解決するための手段） 本発明は、導体の貫通穴を有する変流器本体と、この変
流器本体の側面に面接触する押え金具と、貫通穴の内面
を直接または他の部材を介して導体に面接触させる固定
金具とから成り、この固定金具と押え金具を、導体をは
さんで締付ボルトで固定したものである。(Means for Solving the Problems) The present invention provides a current transformer main body having a through hole for a conductor, a presser metal fitting that makes surface contact with the side surface of the current transformer main body, and an inner surface of the through hole directly or with another member. It consists of a fixing fitting that is brought into surface contact with the conductor through the conductor, and the fixing fitting and the holding fitting are fixed with a tightening bolt with the conductor in between.

（作　用） 変流器本体は、側面に押え金具が面接触することによっ
て、この方向の移動を拘束され、貫通穴の内面を直接ま
たは他の部材を介して導体に面接触することによって、
この方向の移動を拘束される。また、押え金具と固定金
具は、導体をはさなで締付ボルトにより固定される。し
たがって、変流器本体の固定位置が自由に選択でき、導
体には加工が不要となり、製作や組立が容易となる。(Function) The current transformer main body is restrained from moving in this direction by the surface contact of the presser fitting on the side surface, and by the surface contact of the inner surface of the through hole with the conductor, either directly or through another member.
Movement in this direction is restricted. Further, the presser metal fitting and the fixing metal fitting are fixed with a tightening bolt with the conductor in between. Therefore, the fixing position of the current transformer body can be freely selected, the conductor does not require any processing, and manufacturing and assembly are facilitated.

（実施例） 以下、本発明の一実施例を図面を参照して説明する。第
１図は、本発明の一実施例の平面図を示し、第２図は、
第１図のＡ−Ａ矢視図である。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 shows a plan view of an embodiment of the present invention, and FIG.
FIG. 2 is a view taken along the line A-A in FIG. 1;

第１図及び第２図において、変流器１０は、貫通穴１ａ
を有する変流器本体１と、感体２をはさんで取付けたと
き、中間部が貫通穴１ａの内面に面接触する一対の固定
金具１１と、この固定金具１１と導体２をはさんで取付
けたとき、−辺が変流器本体１の側面に面接触する一対
（ただし、４個で構成）の押え金具１２とから構成され
ている。ここで、固定金具１１は、幅寸法を貫通穴１ａ
に挿入可能とし、中間部１１ａが突出するほぼ几状に形
成され、この中間部１１ａの長さは変流器本体１の厚さ
寸法よりやや小さくなるようにしたものである。また、
押え金具１２は、幅寸法を固定金具１１の幅より大きく
し、Ｌ状に形成され、−辺１２ａは変流器本体１の側面
に面接触するが、他辺１２ｂには締付ボルトの挿通穴（
図示しない）を設けたものである。このように形成され
た押え金１２の他辺１２ｂで導体２と固定金具１１をは
さみ、締付ボルト１３を挿通穴に挿通し、バネ座金１４
、平座金１５及びナツト１６を介して締付けることによ
り、変流器本体１が導体２に固定される。したがって、
導体２に加工を施こすことなく、また、導体２の位置に
制約されることなく、変流器本体を固定することができ
る。1 and 2, the current transformer 10 has a through hole 1a
A pair of fixing fittings 11 whose intermediate portions are in surface contact with the inner surface of the through hole 1a when the current transformer main body 1 having a conductor 2 and the conductor 2 are sandwiched between the fixing fittings 11 and the conductor 2. It is comprised of a pair (consisting of four pieces) of presser metal fittings 12 whose negative side comes into surface contact with the side surface of the current transformer main body 1 when installed. Here, the fixing fitting 11 has a width dimension of the through hole 1a.
The current transformer main body 1 has a length that is slightly smaller than the thickness of the current transformer main body 1. Also,
The holding fitting 12 has a width larger than that of the fixing fitting 11 and is formed in an L shape, and the − side 12a is in surface contact with the side surface of the current transformer main body 1, while the other side 12b is for insertion of a tightening bolt. hole(
(not shown). The conductor 2 and the fixing metal fitting 11 are sandwiched between the other side 12b of the presser foot 12 formed in this way, the tightening bolt 13 is inserted into the insertion hole, and the spring washer 14 is inserted.
, the current transformer main body 1 is fixed to the conductor 2 by tightening the flat washer 15 and the nut 16. therefore,
The current transformer main body can be fixed without processing the conductor 2 or being restricted by the position of the conductor 2.

なお、本発明は、上記した実施例に限定されるものでは
なく、種々変形実施できる。第３図は、他の実施例の平
面図を示し、第４図は、第３図のＡ−Ａ矢視図を示し、
第５図は組立手順を示す説明図である。Note that the present invention is not limited to the above-described embodiments, and can be implemented in various modifications. FIG. 3 shows a plan view of another embodiment, and FIG. 4 shows a view taken along the line A-A in FIG.
FIG. 5 is an explanatory diagram showing the assembly procedure.

第３図及び第４図において、変流器２０は、貫通穴１ａ
を有する変流器本体１と、導体２をはさんで取付けたと
き、変流器本体１の上部側に面接触する一対の押え金具
２１と、板ばね２２に押付力を与えてその中間部を導体
２に面接触させる一対の固定金具２３とから構成されて
いる。ここで、押え金具２１は、を状に形成され、上辺
２１ａ、垂直辺２１ｂは変流器本体１の側面及び上面に
それぞれ面接触し、下辺２１ｃは導体２に面接触すると
共に締付ボルトの挿通穴（図示しない）を設けたもので
ある。また、固定金具２３は、Ｌ状に形成され、−辺２
３ａは導体２に面接触すると共に締付ボルトの挿通穴（
図示しない）が設けられ、他の辺２３ｂには端部に板ば
ね２２の端部を係止する折曲部２３ｃと、この折曲部２
３ｃに近接して第５図に示すように他の締付ボルト２４
の挿通穴２３ｄを設けたものである。さらに、板ばね２
２は、幅寸法を貫通穴１ａに挿入可能とし、底面に対し
開いている側を広くなるようなほぼＵ状に形成し、端部
には押え金具２３の挿通穴２３ｄに対応する挿通穴２２
ａを設けたものである。3 and 4, the current transformer 20 has a through hole 1a
When the current transformer main body 1 having a conductor 2 is mounted between the current transformer main body 1 and the conductor 2, a pair of presser fittings 21 which are in surface contact with the upper side of the current transformer main body 1 and a pressing force are applied to the leaf spring 22 to press the intermediate portion thereof. and a pair of fixtures 23 that bring the conductor 2 into surface contact with the conductor 2. Here, the holding fitting 21 is formed in the shape of a square, the upper side 21a and the vertical side 21b are in surface contact with the side surface and the upper surface of the current transformer main body 1, respectively, and the lower side 21c is in surface contact with the conductor 2 and a tightening bolt. It is provided with an insertion hole (not shown). Further, the fixing metal fitting 23 is formed in an L shape, and has -side 2.
3a is in surface contact with the conductor 2 and has a tightening bolt insertion hole (
(not shown), and the other side 23b has a bent part 23c that locks the end of the leaf spring 22, and this bent part 2
3c, another tightening bolt 24 as shown in FIG.
An insertion hole 23d is provided. Furthermore, leaf spring 2
2 has a width dimension that allows it to be inserted into the through hole 1a, is formed into a substantially U-shape such that the side that is open to the bottom is wider, and has an insertion hole 22 at the end that corresponds to the insertion hole 23d of the presser metal fitting 23.
A is provided.

以上のように形成された押え金具２１と固定金具２３を
、第５図に示すように導体２をはさんで締付ボルト１３
、ばね座金１４、平座金１５及びナツト１６で半締付け
を行い、また、板ばね２２を貫通穴１ａに挿入し、両端
部を固定金具２３の折曲部２３ｃに係止させ、板ばね２
２と固定金具２３の相対する挿通穴２２ａ。As shown in FIG.
, semi-tighten with the spring washer 14, flat washer 15 and nut 16, insert the leaf spring 22 into the through hole 1a, lock both ends with the bent part 23c of the fixing fitting 23, and then tighten the leaf spring 22.
2 and the opposing insertion hole 22a of the fixture 23.

２３ｄに、変流器本体１をはさむように締付ボルト２４
を挿通し、ばね座金２５、平座金２６及びナツト２７を
介して締付ける。この締付けによって、挿え金具２１同
志が変流器本体１に近ずくと共に、板ばね２２は固定金
具２３に挿されて中間部が導体２に面接触し、変流器本
体１は押え金具２１と板ばね２２によって導体２に固定
される。したがって、導体２には締付ボルトの挿通穴を
設けなくても変流器本体１の固定ができ、固定位置の変
更も容易にできる。Attach the tightening bolt 24 to 23d so as to sandwich the current transformer main body 1.
is inserted and tightened via the spring washer 25, flat washer 26, and nut 27. By this tightening, the mounting fittings 21 approach the current transformer main body 1, the leaf spring 22 is inserted into the fixing fitting 23, and the intermediate part comes into surface contact with the conductor 2, and the current transformer main body 1 is moved closer to the current transformer main body 1. and is fixed to the conductor 2 by a leaf spring 22. Therefore, the current transformer main body 1 can be fixed without providing a hole for a tightening bolt in the conductor 2, and the fixing position can be easily changed.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明によれば、次の効果を得るこ
とができる。As explained above, according to the present invention, the following effects can be obtained.

■　変流器本体の固定が、導体に貫通穴またはネジ穴等
の加工を必要とすることなくでき、製作が容易になる。■ The main body of the current transformer can be fixed without requiring the processing of through holes or screw holes in the conductor, making manufacturing easier.

■　変流器本体の固定位置が自由になる。■ The fixing position of the current transformer body becomes free.

■　導体に対して締付ける金物が面接触しているだけで
あるから、絶縁導体であっても導体表面の絶縁物を傷つ
けるようなことがなくなる。■ Since the metal fittings that are tightened against the conductor are only in surface contact, there is no possibility of damaging the insulation on the surface of the conductor, even if it is an insulated conductor.

（イ）変流器本体に固定耳およびネジ穴を設ける必要が
なくなり、モールドの形状が簡素化される。(a) There is no need to provide fixed ears and screw holes on the current transformer body, simplifying the shape of the mold.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例を示す平面図、第２図は第１
図のＡ−Ａ矢視図、第３図は本発明の他の実施例を示す
平面図、第４図は第３図のＡ−Ａ矢視図、第５図は本発
明の他の実施例の組立手順を示す説明図、第６図は従来
の変流器の構成を示す平面図、第７図は第６図のＡ−Ａ
矢視図である。 １・・・変流器本体　　　　　１ａ・・貫通穴２・・・
導体　　　　　　　　１１・・・固定金具１２・・押え
金具　　　　　　１３・・締付ボルト代理人　弁理士　
則　近　憲　佑 同　　　　第子丸　　　健 第 図 第 図Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
FIG. 3 is a plan view showing another embodiment of the present invention, FIG. 4 is a view taken along A-A in FIG. 3, and FIG. 5 is a plan view showing another embodiment of the present invention. An explanatory diagram showing an example assembly procedure, Fig. 6 is a plan view showing the configuration of a conventional current transformer, and Fig. 7 is an A-A in Fig. 6.
It is an arrow view. 1...Current transformer body 1a...Through hole 2...
Conductor 11... Fixing fitting 12... Holding fitting 13... Tightening bolt agent Patent attorney
Nori Chika Ken Yudo Daishimaru Ken Diagram Diagram

Claims (1)

【特許請求の範囲】[Claims] 　導体の貫通穴を有する変流器本体と、この変流器本体
の側面に面接触する押え金具と、前記貫通穴の内面を直
接または他の部材を介して前記導体に面接触させる固定
金具とから成り、この固定金具と前記押え金具を、前記
導体をはさんで締付ボルトにより固定することを特徴と
する変流器。A current transformer main body having a through hole for a conductor, a holding metal fitting that makes surface contact with the side surface of the current transformer main body, and a fixing metal fitting that makes surface contact of the inner surface of the through hole with the conductor directly or through another member. A current transformer comprising: the fixing metal fitting and the holding metal fitting, which are fixed with a tightening bolt with the conductor sandwiched therebetween.